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                 return err;
 146
 147         if (provider->vpn_service)
 148                 provider_indicate_state(provider,
 149                                         CONNMAN_SERVICE_STATE_IDLE);
 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                                         const char *dbus_sender)
 169 {
 170         int err;
 171
 172         DBG("provider %p", provider);
 173
 174         if (provider->driver && provider->driver->connect)
 175                 err = provider->driver->connect(provider, dbus_sender);
 176         else
 177                 return -EOPNOTSUPP;
 178
 179         if (err < 0) {
 180                 if (err != -EINPROGRESS)
 181                         return err;
 182
 183                 provider_indicate_state(provider,
 184                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 185
 186                 return -EINPROGRESS;
 187         }
 188
 189         return 0;
 190 }
 191
 192 int __connman_provider_remove_by_path(const char *path)
 193 {
 194         struct connman_provider *provider;
 195         GHashTableIter iter;
 196         gpointer value, key;
 197
 198         DBG("path %s", path);
 199
 200         g_hash_table_iter_init(&iter, provider_hash);
 201         while (g_hash_table_iter_next(&iter, &key, &value)) {
 202                 const char *srv_path;
 203                 provider = value;
 204
 205                 if (!provider->vpn_service)
 206                         continue;
 207
 208                 srv_path = __connman_service_get_path(provider->vpn_service);
 209
 210                 if (g_strcmp0(srv_path, path) == 0) {
 211                         DBG("Removing VPN %s", provider->identifier);
 212
 213                         provider_remove(provider);
 214
 215                         connman_provider_set_state(provider,
 216                                                 CONNMAN_PROVIDER_STATE_IDLE);
 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                                         bool connected)
 229 {
 230         struct connman_service *service = provider->vpn_service;
 231         struct connman_ipconfig *ipconfig;
 232
 233         if (!service)
 234                 return -ENODEV;
 235
 236         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 237
 238         if (connected) {
 239                 if (!ipconfig) {
 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                 if (provider->driver && provider->driver->set_routes)
 252                         provider->driver->set_routes(provider,
 253                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 254
 255         } else {
 256                 if (ipconfig) {
 257                         provider_indicate_state(provider,
 258                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 259                         __connman_ipconfig_gateway_remove(ipconfig);
 260                 }
 261
 262                 provider_indicate_state(provider,
 263                                         CONNMAN_SERVICE_STATE_IDLE);
 264         }
 265
 266         return 0;
 267 }
 268
 269 int connman_provider_set_state(struct connman_provider *provider,
 270                                         enum connman_provider_state state)
 271 {
 272         if (!provider || !provider->vpn_service)
 273                 return -EINVAL;
 274
 275         switch (state) {
 276         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 277                 return -EINVAL;
 278         case CONNMAN_PROVIDER_STATE_IDLE:
 279                 return set_connected(provider, false);
 280         case CONNMAN_PROVIDER_STATE_CONNECT:
 281                 return provider_indicate_state(provider,
 282                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 283         case CONNMAN_PROVIDER_STATE_READY:
 284                 return set_connected(provider, true);
 285         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 286                 return provider_indicate_state(provider,
 287                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 288         case CONNMAN_PROVIDER_STATE_FAILURE:
 289                 return provider_indicate_state(provider,
 290                                         CONNMAN_SERVICE_STATE_FAILURE);
 291         }
 292
 293         return -EINVAL;
 294 }
 295
 296 int connman_provider_indicate_error(struct connman_provider *provider,
 297                                         enum connman_provider_error error)
 298 {
 299         enum connman_service_error service_error;
 300
 301         switch (error) {
 302         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 303                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 304                 break;
 305         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 306                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 307                 break;
 308         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 309                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 310                 break;
 311         default:
 312                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 313                 break;
 314         }
 315
 316         return __connman_service_indicate_error(provider->vpn_service,
 317                                                         service_error);
 318 }
 319
 320 int connman_provider_create_service(struct connman_provider *provider)
 321 {
 322         if (provider->vpn_service) {
 323                 bool connected;
 324
 325                 connected = __connman_service_is_connected_state(
 326                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 327                 if (connected)
 328                         return -EALREADY;
 329
 330                 connected = __connman_service_is_connected_state(
 331                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 332                 if (connected)
 333                         return -EALREADY;
 334
 335                 return 0;
 336         }
 337
 338         provider->vpn_service =
 339                 __connman_service_create_from_provider(provider);
 340
 341         if (!provider->vpn_service) {
 342                 connman_warn("service creation failed for provider %s",
 343                         provider->identifier);
 344
 345                 g_hash_table_remove(provider_hash, provider->identifier);
 346                 return -EOPNOTSUPP;
 347         }
 348
 349         return 0;
 350 }
 351
 352 bool __connman_provider_is_immutable(struct connman_provider *provider)
 353
 354 {
 355         if (provider)
 356                 return provider->immutable;
 357
 358         return false;
 359 }
 360
 361 int connman_provider_set_immutable(struct connman_provider *provider,
 362                                                 bool immutable)
 363 {
 364         if (!provider)
 365                 return -EINVAL;
 366
 367         provider->immutable = immutable;
 368
 369         return 0;
 370 }
 371
 372 static struct connman_provider *provider_lookup(const char *identifier)
 373 {
 374         return g_hash_table_lookup(provider_hash, identifier);
 375 }
 376
 377 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 378 {
 379         DBusMessage *reply;
 380         const char *identifier = user_data;
 381
 382         DBG("msg %p error %d", msg, error_code);
 383
 384         if (error_code != 0) {
 385                 reply = __connman_error_failed(msg, -error_code);
 386                 if (!g_dbus_send_message(connection, reply))
 387                         DBG("reply %p send failed", reply);
 388         } else {
 389                 const char *path;
 390                 struct connman_provider *provider;
 391
 392                 provider = provider_lookup(identifier);
 393                 if (!provider) {
 394                         reply = __connman_error_failed(msg, EINVAL);
 395                         g_dbus_send_message(connection, reply);
 396                         return;
 397                 }
 398
 399                 path = __connman_service_get_path(provider->vpn_service);
 400
 401                 g_dbus_send_reply(connection, msg,
 402                                 DBUS_TYPE_OBJECT_PATH, &path,
 403                                 DBUS_TYPE_INVALID);
 404         }
 405 }
 406
 407 int __connman_provider_create_and_connect(DBusMessage *msg)
 408 {
 409         struct connman_provider_driver *driver;
 410
 411         if (!driver_list)
 412                 return -EINVAL;
 413
 414         driver = driver_list->data;
 415         if (!driver || !driver->create)
 416                 return -EINVAL;
 417
 418         DBG("msg %p", msg);
 419
 420         return driver->create(msg, connection_ready);
 421 }
 422
 423 const char *__connman_provider_get_ident(struct connman_provider *provider)
 424 {
 425         if (!provider)
 426                 return NULL;
 427
 428         return provider->identifier;
 429 }
 430
 431 int connman_provider_set_string(struct connman_provider *provider,
 432                                         const char *key, const char *value)
 433 {
 434         if (provider->driver && provider->driver->set_property)
 435                 return provider->driver->set_property(provider, key, value);
 436
 437         return 0;
 438 }
 439
 440 const char *connman_provider_get_string(struct connman_provider *provider,
 441                                                         const char *key)
 442 {
 443         if (provider->driver && provider->driver->get_property)
 444                 return provider->driver->get_property(provider, key);
 445
 446         return NULL;
 447 }
 448
 449 bool
 450 __connman_provider_check_routes(struct connman_provider *provider)
 451 {
 452         if (!provider)
 453                 return false;
 454
 455         if (provider->driver && provider->driver->check_routes)
 456                 return provider->driver->check_routes(provider);
 457
 458         return false;
 459 }
 460
 461 void *connman_provider_get_data(struct connman_provider *provider)
 462 {
 463         return provider->driver_data;
 464 }
 465
 466 void connman_provider_set_data(struct connman_provider *provider, void *data)
 467 {
 468         provider->driver_data = data;
 469 }
 470
 471 void connman_provider_set_index(struct connman_provider *provider, int index)
 472 {
 473         struct connman_service *service = provider->vpn_service;
 474         struct connman_ipconfig *ipconfig;
 475
 476         DBG("");
 477
 478         if (!service)
 479                 return;
 480
 481         ipconfig = __connman_service_get_ip4config(service);
 482
 483         if (!ipconfig) {
 484                 connman_service_create_ip4config(service, index);
 485
 486                 ipconfig = __connman_service_get_ip4config(service);
 487                 if (!ipconfig) {
 488                         DBG("Couldnt create ipconfig");
 489                         goto done;
 490                 }
 491         }
 492
 493         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 494         __connman_ipconfig_set_index(ipconfig, index);
 495
 496         ipconfig = __connman_service_get_ip6config(service);
 497
 498         if (!ipconfig) {
 499                 connman_service_create_ip6config(service, index);
 500
 501                 ipconfig = __connman_service_get_ip6config(service);
 502                 if (!ipconfig) {
 503                         DBG("Couldnt create ipconfig for IPv6");
 504                         goto done;
 505                 }
 506         }
 507
 508         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 509         __connman_ipconfig_set_index(ipconfig, index);
 510
 511 done:
 512         provider->index = index;
 513 }
 514
 515 int connman_provider_get_index(struct connman_provider *provider)
 516 {
 517         return provider->index;
 518 }
 519
 520 int connman_provider_set_ipaddress(struct connman_provider *provider,
 521                                         struct connman_ipaddress *ipaddress)
 522 {
 523         struct connman_ipconfig *ipconfig = NULL;
 524
 525         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 526                                                         ipaddress->family);
 527         if (!ipconfig)
 528                 return -EINVAL;
 529
 530         provider->family = ipaddress->family;
 531
 532         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 533
 534         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 535         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 536         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 537         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 538         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 539
 540         return 0;
 541 }
 542
 543 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 544 {
 545         DBG("provider %p pac %s", provider, pac);
 546
 547         __connman_service_set_pac(provider->vpn_service, pac);
 548
 549         return 0;
 550 }
 551
 552
 553 int connman_provider_set_domain(struct connman_provider *provider,
 554                                         const char *domain)
 555 {
 556         DBG("provider %p domain %s", provider, domain);
 557
 558         __connman_service_set_domainname(provider->vpn_service, domain);
 559
 560         return 0;
 561 }
 562
 563 int connman_provider_set_nameservers(struct connman_provider *provider,
 564                                         char * const *nameservers)
 565 {
 566         int i;
 567
 568         DBG("provider %p nameservers %p", provider, nameservers);
 569
 570         __connman_service_nameserver_clear(provider->vpn_service);
 571
 572         if (!nameservers)
 573                 return 0;
 574
 575         for (i = 0; nameservers[i]; i++)
 576                 __connman_service_nameserver_append(provider->vpn_service,
 577                                                 nameservers[i], false);
 578
 579         return 0;
 580 }
 581
 582 static void unregister_provider(gpointer data)
 583 {
 584         struct connman_provider *provider = data;
 585
 586         DBG("provider %p service %p", provider, provider->vpn_service);
 587
 588         if (provider->vpn_service) {
 589                 connman_service_unref(provider->vpn_service);
 590                 provider->vpn_service = NULL;
 591         }
 592
 593         connman_provider_unref(provider);
 594 }
 595
 596 static gint compare_priority(gconstpointer a, gconstpointer b)
 597 {
 598         return 0;
 599 }
 600
 601 int connman_provider_driver_register(struct connman_provider_driver *driver)
 602 {
 603         DBG("driver %p name %s", driver, driver->name);
 604
 605         driver_list = g_slist_insert_sorted(driver_list, driver,
 606                                                         compare_priority);
 607         return 0;
 608 }
 609
 610 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 611 {
 612         DBG("driver %p name %s", driver, driver->name);
 613
 614         driver_list = g_slist_remove(driver_list, driver);
 615 }
 616
 617 void connman_provider_set_driver(struct connman_provider *provider,
 618                                 struct connman_provider_driver *driver)
 619 {
 620         provider->driver = driver;
 621 }
 622
 623 static void provider_disconnect_all(gpointer key, gpointer value,
 624                                                 gpointer user_data)
 625 {
 626         struct connman_provider *provider = value;
 627
 628         connman_provider_disconnect(provider);
 629 }
 630
 631 static void provider_offline_mode(bool enabled)
 632 {
 633         DBG("enabled %d", enabled);
 634
 635         if (enabled)
 636                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 637                                                                         NULL);
 638
 639 }
 640
 641 static void provider_initialize(struct connman_provider *provider)
 642 {
 643         DBG("provider %p", provider);
 644
 645         provider->index = 0;
 646         provider->identifier = NULL;
 647 }
 648
 649 static struct connman_provider *provider_new(void)
 650 {
 651         struct connman_provider *provider;
 652
 653         provider = g_try_new0(struct connman_provider, 1);
 654         if (!provider)
 655                 return NULL;
 656
 657         provider->refcount = 1;
 658
 659         DBG("provider %p", provider);
 660         provider_initialize(provider);
 661
 662         return provider;
 663 }
 664
 665 struct connman_provider *connman_provider_get(const char *identifier)
 666 {
 667         struct connman_provider *provider;
 668
 669         provider = g_hash_table_lookup(provider_hash, identifier);
 670         if (provider)
 671                 return provider;
 672
 673         provider = provider_new();
 674         if (!provider)
 675                 return NULL;
 676
 677         DBG("provider %p", provider);
 678
 679         provider->identifier = g_strdup(identifier);
 680
 681         g_hash_table_insert(provider_hash, provider->identifier, provider);
 682
 683         return provider;
 684 }
 685
 686 void connman_provider_put(struct connman_provider *provider)
 687 {
 688         g_hash_table_remove(provider_hash, provider->identifier);
 689 }
 690
 691 static struct connman_provider *provider_get(int index)
 692 {
 693         GHashTableIter iter;
 694         gpointer value, key;
 695
 696         g_hash_table_iter_init(&iter, provider_hash);
 697
 698         while (g_hash_table_iter_next(&iter, &key, &value)) {
 699                 struct connman_provider *provider = value;
 700
 701                 if (provider->index == index)
 702                         return provider;
 703         }
 704
 705         return NULL;
 706 }
 707
 708 static void provider_service_changed(struct connman_service *service,
 709                                 enum connman_service_state state)
 710 {
 711         struct connman_provider *provider;
 712         int vpn_index, service_index;
 713
 714         if (!service)
 715                 return;
 716
 717         switch (state) {
 718         case CONNMAN_SERVICE_STATE_UNKNOWN:
 719         case CONNMAN_SERVICE_STATE_IDLE:
 720         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 721         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 722         case CONNMAN_SERVICE_STATE_READY:
 723         case CONNMAN_SERVICE_STATE_ONLINE:
 724                 return;
 725         case CONNMAN_SERVICE_STATE_DISCONNECT:
 726         case CONNMAN_SERVICE_STATE_FAILURE:
 727                 break;
 728         }
 729
 730         service_index = __connman_service_get_index(service);
 731
 732         vpn_index = __connman_connection_get_vpn_index(service_index);
 733
 734         DBG("service %p %s state %d index %d/%d", service,
 735                 connman_service_get_identifier(service),
 736                 state, service_index, vpn_index);
 737
 738         if (vpn_index < 0)
 739                 return;
 740
 741         provider = provider_get(vpn_index);
 742         if (!provider)
 743                 return;
 744
 745         DBG("disconnect %p index %d", provider, vpn_index);
 746
 747         connman_provider_disconnect(provider);
 748 }
 749
 750 static const struct connman_notifier provider_notifier = {
 751         .name                   = "provider",
 752         .offline_mode           = provider_offline_mode,
 753         .service_state_changed  = provider_service_changed,
 754 };
 755
 756 int __connman_provider_init(void)
 757 {
 758         int err;
 759
 760         DBG("");
 761
 762         connection = connman_dbus_get_connection();
 763
 764         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 765                                                 NULL, unregister_provider);
 766
 767         err = connman_notifier_register(&provider_notifier);
 768         if (err < 0) {
 769                 g_hash_table_destroy(provider_hash);
 770                 dbus_connection_unref(connection);
 771         }
 772
 773         return err;
 774 }
 775
 776 void __connman_provider_cleanup(void)
 777 {
 778         DBG("");
 779
 780         connman_notifier_unregister(&provider_notifier);
 781
 782         g_hash_table_destroy(provider_hash);
 783         provider_hash = NULL;
 784
 785         dbus_connection_unref(connection);
 786 }