src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 <stdio.h>
  27 #include <string.h>
  28 #include <gdbus.h>
  29
  30 #include "connman.h"
  31
  32 static DBusConnection *connection = NULL;
  33
  34 static GHashTable *provider_hash = NULL;
  35
  36 static GSList *driver_list = NULL;
  37
  38 struct connman_provider {
  39         struct connman_element element;
  40         struct connman_service *vpn_service;
  41         char *identifier;
  42         char *name;
  43         char *type;
  44         char *host;
  45         char *dns;
  46         char *domain;
  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         if (provider->host != NULL)
  55                 connman_dbus_dict_append_basic(iter, "Host",
  56                                         DBUS_TYPE_STRING, &provider->host);
  57
  58         if (provider->domain != NULL)
  59                 connman_dbus_dict_append_basic(iter, "Domain",
  60                                         DBUS_TYPE_STRING, &provider->domain);
  61
  62         if (provider->type != NULL)
  63                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  64                                                  &provider->type);
  65 }
  66
  67 static struct connman_provider *connman_provider_lookup(const char *identifier)
  68 {
  69         struct connman_provider *provider = NULL;
  70
  71         provider = g_hash_table_lookup(provider_hash, identifier);
  72
  73         return provider;
  74 }
  75
  76 static int connman_provider_setup_vpn_ipv4(struct connman_provider *provider,
  77                                                 struct connman_element *element)
  78 {
  79         if (element == NULL || provider == NULL)
  80                 return -EINVAL;
  81
  82         DBG("set vpn type %d", element->type);
  83
  84         g_free(element->ipv4.address);
  85         element->ipv4.address = g_strdup(provider->element.ipv4.address);
  86
  87         g_free(element->ipv4.netmask);
  88         element->ipv4.netmask = g_strdup(provider->element.ipv4.netmask);
  89
  90         g_free(element->ipv4.gateway);
  91         element->ipv4.gateway = g_strdup(provider->element.ipv4.gateway);
  92
  93         g_free(element->ipv4.broadcast);
  94         element->ipv4.broadcast = g_strdup(provider->element.ipv4.broadcast);
  95
  96         g_free(element->ipv4.pac);
  97         element->ipv4.pac = g_strdup(provider->element.ipv4.pac);
  98
  99         return connman_element_register(element, &provider->element);
 100 }
 101
 102 struct connman_provider *connman_provider_ref(struct connman_provider *provider)
 103 {
 104         DBG("provider %p", provider);
 105
 106         if (connman_element_ref(&provider->element) == NULL)
 107                 return NULL;
 108
 109         return provider;
 110 }
 111
 112 void connman_provider_unref(struct connman_provider *provider)
 113 {
 114         DBG("provider %p", provider);
 115
 116         connman_element_unref(&provider->element);
 117 }
 118
 119 static gboolean match_driver(struct connman_provider *provider,
 120                                 struct connman_provider_driver *driver)
 121 {
 122         if (g_strcmp0(driver->name, provider->type) == 0)
 123                 return TRUE;
 124
 125         return FALSE;
 126 }
 127
 128 static int provider_probe(struct connman_provider *provider)
 129 {
 130         GSList *list;
 131
 132         DBG("provider %p name %s", provider, provider->name);
 133
 134         if (provider->driver != NULL)
 135                 return -EALREADY;
 136
 137         for (list = driver_list; list; list = list->next) {
 138                 struct connman_provider_driver *driver = list->data;
 139
 140                 if (match_driver(provider, driver) == FALSE)
 141                         continue;
 142
 143                 DBG("driver %p name %s", driver, driver->name);
 144
 145                 if (driver->probe != NULL && driver->probe(provider) == 0) {
 146                         provider->driver = driver;
 147                         break;
 148                 }
 149         }
 150
 151         if (provider->driver == NULL)
 152                 return -ENODEV;
 153
 154         return 0;
 155 }
 156
 157 int __connman_provider_disconnect(struct connman_provider *provider)
 158 {
 159         int err;
 160
 161         DBG("provider %p", provider);
 162
 163         if (provider->driver != NULL && provider->driver->disconnect != NULL)
 164                 err = provider->driver->disconnect(provider);
 165         else
 166                 return -EOPNOTSUPP;
 167
 168         __connman_service_indicate_state(provider->vpn_service,
 169                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 170         if (err < 0) {
 171                 if (err != -EINPROGRESS)
 172                         return err;
 173
 174                 return -EINPROGRESS;
 175         }
 176
 177         return 0;
 178 }
 179
 180 int __connman_provider_connect(struct connman_provider *provider)
 181 {
 182         int err;
 183
 184         DBG("provider %p", provider);
 185
 186         g_free(provider->element.ipv4.address);
 187         g_free(provider->element.ipv4.netmask);
 188         g_free(provider->element.ipv4.gateway);
 189         g_free(provider->element.ipv4.broadcast);
 190         g_free(provider->element.ipv4.pac);
 191
 192         provider->element.ipv4.address = NULL;
 193         provider->element.ipv4.netmask = NULL;
 194         provider->element.ipv4.gateway = NULL;
 195         provider->element.ipv4.broadcast = NULL;
 196         provider->element.ipv4.pac = NULL;
 197
 198         if (provider->driver != NULL && provider->driver->connect != NULL)
 199                 err = provider->driver->connect(provider);
 200         else
 201                 return -EOPNOTSUPP;
 202
 203         if (err < 0) {
 204                 if (err != -EINPROGRESS)
 205                         return err;
 206
 207                 __connman_service_indicate_state(provider->vpn_service,
 208                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 209                 return -EINPROGRESS;
 210         }
 211
 212         return 0;
 213 }
 214
 215 int __connman_provider_remove(const char *path)
 216 {
 217         struct connman_provider *provider;
 218
 219         DBG("path %s", path);
 220
 221         provider = g_hash_table_lookup(provider_hash, path);
 222         if (provider == NULL) {
 223                 DBG("patch %s not found", path);
 224                 return -ENXIO;
 225         }
 226
 227         g_hash_table_remove(provider_hash, path);
 228
 229         return 0;
 230 }
 231
 232 static int set_connected(struct connman_provider *provider,
 233                                         connman_bool_t connected)
 234 {
 235         struct connman_service *service = provider->vpn_service;
 236
 237         if (service == NULL)
 238                 return -ENODEV;
 239
 240         if (connected == TRUE) {
 241                 enum connman_element_type type = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 242                 struct connman_element *element;
 243                 char *nameservers = NULL, *name = NULL;
 244                 const char *value, *first;
 245                 int err;
 246
 247                 __connman_service_indicate_state(provider->vpn_service,
 248                                         CONNMAN_SERVICE_STATE_CONFIGURATION);
 249
 250                 type = CONNMAN_ELEMENT_TYPE_IPV4;
 251
 252                 element = connman_element_create(NULL);
 253                 if (element == NULL)
 254                         return -ENOMEM;
 255
 256                 element->type  = type;
 257                 element->index = provider->element.index;
 258
 259                 err = connman_provider_setup_vpn_ipv4(provider, element);
 260                 if (err < 0) {
 261                         connman_element_unref(element);
 262
 263                         __connman_service_indicate_state(service,
 264                                                 CONNMAN_SERVICE_STATE_FAILURE);
 265
 266                         return err;
 267                 }
 268
 269                 __connman_service_indicate_state(service,
 270                                                 CONNMAN_SERVICE_STATE_READY);
 271
 272                 __connman_service_set_domainname(service, provider->domain);
 273
 274                 nameservers = g_strdup(provider->dns);
 275                 value = nameservers;
 276                 first = strchr(value, ' ');
 277                 __connman_service_append_nameserver(service, first);
 278                 name = connman_inet_ifname(provider->element.index);
 279                 while (value) {
 280                         char *next = strchr(value, ' ');
 281                         if (next)
 282                                 *(next++) = 0;
 283
 284                         connman_resolver_append(name, provider->domain, value);
 285                         value = next;
 286                 }
 287
 288                 g_free(nameservers);
 289                 g_free(name);
 290
 291         } else {
 292                 connman_element_unregister_children(&provider->element);
 293                 __connman_service_indicate_state(service,
 294                                                 CONNMAN_SERVICE_STATE_IDLE);
 295         }
 296
 297         return 0;
 298 }
 299
 300 int connman_provider_set_state(struct connman_provider *provider,
 301                                         enum connman_provider_state state)
 302 {
 303         if (provider == NULL || provider->vpn_service == NULL)
 304                 return -EINVAL;
 305
 306         switch (state) {
 307         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 308                 return -EINVAL;
 309         case CONNMAN_PROVIDER_STATE_IDLE:
 310                 return set_connected(provider, FALSE);
 311         case CONNMAN_PROVIDER_STATE_CONNECT:
 312                 return __connman_service_indicate_state(provider->vpn_service,
 313                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 314         case CONNMAN_PROVIDER_STATE_READY:
 315                 return set_connected(provider, TRUE);
 316         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 317                 return __connman_service_indicate_state(provider->vpn_service,
 318                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 319         case CONNMAN_PROVIDER_STATE_FAILURE:
 320                 return __connman_service_indicate_state(provider->vpn_service,
 321                                         CONNMAN_SERVICE_STATE_FAILURE);
 322         }
 323
 324         return -EINVAL;
 325 }
 326
 327 static void unregister_provider(gpointer data)
 328 {
 329         struct connman_provider *provider = data;
 330
 331         DBG("provider %p", provider);
 332
 333         __connman_service_put(provider->vpn_service);
 334
 335         connman_element_unregister(&provider->element);
 336         connman_provider_unref(provider);
 337 }
 338
 339 static void provider_destruct(struct connman_element *element)
 340 {
 341         struct connman_provider *provider = element->private;
 342
 343         DBG("provider %p", provider);
 344
 345         g_free(provider->name);
 346         g_free(provider->type);
 347         g_free(provider->domain);
 348         g_free(provider->identifier);
 349         g_free(provider->dns);
 350 }
 351
 352 static void __connman_provider_initialize(struct connman_provider *provider)
 353 {
 354         DBG("provider %p", provider);
 355
 356         __connman_element_initialize(&provider->element);
 357
 358         provider->element.private = provider;
 359         provider->element.destruct = provider_destruct;
 360
 361         provider->element.ipv4.address = NULL;
 362         provider->element.ipv4.netmask = NULL;
 363         provider->element.ipv4.gateway = NULL;
 364         provider->element.ipv4.broadcast = NULL;
 365         provider->element.ipv4.pac = NULL;
 366
 367         provider->name = NULL;
 368         provider->type = NULL;
 369         provider->dns = NULL;
 370         provider->domain = NULL;
 371         provider->identifier = NULL;
 372 }
 373
 374 static struct connman_provider *connman_provider_new(void)
 375 {
 376         struct connman_provider *provider;
 377
 378         provider = g_try_new0(struct connman_provider, 1);
 379         if (provider == NULL)
 380                 return NULL;
 381
 382         DBG("provider %p", provider);
 383         __connman_provider_initialize(provider);
 384
 385         return provider;
 386 }
 387
 388 static struct connman_provider *connman_provider_get(const char *identifier)
 389 {
 390         struct connman_provider *provider;
 391
 392         provider = g_hash_table_lookup(provider_hash, identifier);
 393         if (provider != NULL)
 394                 return provider;
 395
 396         provider = connman_provider_new();
 397         if (provider == NULL)
 398                 return NULL;
 399
 400         DBG("provider %p", provider);
 401
 402         provider->identifier = g_strdup(identifier);
 403
 404         g_hash_table_insert(provider_hash, provider->identifier, provider);
 405
 406         provider->element.name = g_strdup(identifier);
 407         connman_element_register(&provider->element, NULL);
 408
 409         return provider;
 410 }
 411
 412 static void provider_dbus_ident(char *ident)
 413 {
 414         int i, len = strlen(ident);
 415
 416         for (i = 0; i < len; i++)
 417                 if (ident[i] == '.')
 418                         ident[i] = '_';
 419 }
 420
 421 int __connman_provider_create_and_connect(DBusMessage *msg)
 422 {
 423         struct connman_provider *provider;
 424         DBusMessageIter iter, array;
 425         const char *type = NULL, *name = NULL, *service_path = NULL;
 426         const char *host = NULL, *domain = NULL;
 427         char *ident;
 428         gboolean created = FALSE;
 429         int err;
 430
 431         dbus_message_iter_init(msg, &iter);
 432         dbus_message_iter_recurse(&iter, &array);
 433
 434         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 435                 DBusMessageIter entry, value;
 436                 const char *key;
 437
 438                 dbus_message_iter_recurse(&array, &entry);
 439                 dbus_message_iter_get_basic(&entry, &key);
 440
 441                 dbus_message_iter_next(&entry);
 442                 dbus_message_iter_recurse(&entry, &value);
 443
 444                 switch (dbus_message_iter_get_arg_type(&value)) {
 445                 case DBUS_TYPE_STRING:
 446                         if (g_str_equal(key, "Type") == TRUE)
 447                                 dbus_message_iter_get_basic(&value, &type);
 448                         else if (g_str_equal(key, "Name") == TRUE)
 449                                 dbus_message_iter_get_basic(&value, &name);
 450                         else if (g_str_equal(key, "Host") == TRUE)
 451                                 dbus_message_iter_get_basic(&value, &host);
 452                         else if (g_str_equal(key, "VPN.Domain") == TRUE)
 453                                 dbus_message_iter_get_basic(&value, &domain);
 454                         break;
 455                 }
 456
 457                 dbus_message_iter_next(&array);
 458         }
 459
 460         if (host == NULL && domain == NULL) {
 461                 err = -EINVAL;
 462                 goto failed;
 463         }
 464
 465         DBG("Type %s name %s", type, name);
 466
 467         if (type == NULL || name == NULL) {
 468                 err = -EOPNOTSUPP;
 469                 goto failed;
 470         }
 471
 472         ident = g_strdup_printf("%s_%s", host, domain);
 473         provider_dbus_ident(ident);
 474
 475         DBG("ident %s", ident);
 476
 477         provider = connman_provider_lookup(ident);
 478
 479         if (provider == NULL) {
 480                 created = TRUE;
 481                 provider = connman_provider_get(ident);
 482                 if (provider) {
 483                         provider->host = g_strdup(host);
 484                         provider->domain = g_strdup(domain);
 485                         provider->name = g_strdup(name);
 486                         provider->type = g_strdup(type);
 487                 }
 488         }
 489
 490         if (provider == NULL) {
 491                 DBG("can not create provider");
 492                 err = -EOPNOTSUPP;
 493                 goto failed;
 494         }
 495         dbus_message_iter_init(msg, &iter);
 496         dbus_message_iter_recurse(&iter, &array);
 497
 498         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 499                 DBusMessageIter entry, value;
 500                 const char *key, *str;
 501
 502                 dbus_message_iter_recurse(&array, &entry);
 503                 dbus_message_iter_get_basic(&entry, &key);
 504
 505                 dbus_message_iter_next(&entry);
 506                 dbus_message_iter_recurse(&entry, &value);
 507
 508                 switch (dbus_message_iter_get_arg_type(&value)) {
 509                 case DBUS_TYPE_STRING:
 510                         dbus_message_iter_get_basic(&value, &str);
 511                         connman_provider_set_string(provider, key, str);
 512                         break;
 513                 }
 514
 515                 dbus_message_iter_next(&array);
 516         }
 517
 518         g_free(ident);
 519
 520         if (provider == NULL) {
 521                 err = -EOPNOTSUPP;
 522                 goto failed;
 523         }
 524
 525         if (created == TRUE)
 526                 provider_probe(provider);
 527
 528         provider->vpn_service =
 529                         __connman_service_create_from_provider(provider);
 530         if (provider->vpn_service == NULL) {
 531                 err = -EOPNOTSUPP;
 532                 goto failed;
 533         }
 534
 535         err = __connman_service_connect(provider->vpn_service);
 536         if (err < 0 && err != -EINPROGRESS)
 537                 goto failed;
 538
 539         service_path = __connman_service_get_path(provider->vpn_service);
 540         g_dbus_send_reply(connection, msg,
 541                                 DBUS_TYPE_OBJECT_PATH, &service_path,
 542                                                         DBUS_TYPE_INVALID);
 543         return 0;
 544
 545 failed:
 546         if (provider != NULL && created == TRUE) {
 547                 DBG("can not connect delete provider");
 548                 connman_provider_unref(provider);
 549
 550                 if (provider->vpn_service != NULL)
 551                         __connman_service_put(provider->vpn_service);
 552         }
 553
 554         return err;
 555 }
 556
 557 const char * __connman_provider_get_ident(struct connman_provider *provider)
 558 {
 559         if (provider == NULL)
 560                 return NULL;
 561
 562         return provider->identifier;
 563 }
 564
 565 int connman_provider_set_string(struct connman_provider *provider,
 566                                         const char *key, const char *value)
 567 {
 568         DBG("provider %p key %s value %s", provider, key, value);
 569
 570         if (g_str_equal(key, "Type") == TRUE) {
 571                 g_free(provider->type);
 572                 provider->type = g_strdup(value);
 573         } else if (g_str_equal(key, "Name") == TRUE) {
 574                 g_free(provider->name);
 575                 provider->name = g_strdup(value);
 576         } else if (g_str_equal(key, "Gateway") == TRUE) {
 577                 g_free(provider->element.ipv4.gateway);
 578                 provider->element.ipv4.gateway = g_strdup(value);
 579         } else if (g_str_equal(key, "Address") == TRUE) {
 580                 g_free(provider->element.ipv4.address);
 581                 provider->element.ipv4.address = g_strdup(value);
 582         } else if (g_str_equal(key, "Netmask") == TRUE) {
 583                 g_free(provider->element.ipv4.netmask);
 584                 provider->element.ipv4.netmask = g_strdup(value);
 585         } else if (g_str_equal(key, "PAC") == TRUE) {
 586                 g_free(provider->element.ipv4.pac);
 587                 provider->element.ipv4.pac = g_strdup(value);
 588                 __connman_service_set_proxy_autoconfig(provider->vpn_service,
 589                                                                         value);
 590         } else if (g_str_equal(key, "DNS") == TRUE) {
 591                 g_free(provider->dns);
 592                 provider->dns = g_strdup(value);
 593         } else if (g_str_equal(key, "Domain") == TRUE) {
 594                 g_free(provider->domain);
 595                 provider->domain = g_strdup(value);
 596         }
 597
 598         return connman_element_set_string(&provider->element, key, value);
 599 }
 600
 601 const char *connman_provider_get_string(struct connman_provider *provider,
 602                                                         const char *key)
 603 {
 604         DBG("provider %p key %s", provider, key);
 605
 606         if (g_str_equal(key, "Type") == TRUE)
 607                 return provider->type;
 608         else if (g_str_equal(key, "Name") == TRUE)
 609                 return provider->name;
 610
 611         return connman_element_get_string(&provider->element, key);
 612 }
 613
 614 void *connman_provider_get_data(struct connman_provider *provider)
 615 {
 616         return provider->driver_data;
 617 }
 618
 619 void connman_provider_set_data(struct connman_provider *provider, void *data)
 620 {
 621         provider->driver_data = data;
 622 }
 623
 624 void connman_provider_set_index(struct connman_provider *provider, int index)
 625 {
 626         struct connman_service *service = provider->vpn_service;
 627         struct connman_ipconfig *ipconfig;
 628
 629         DBG("");
 630
 631         ipconfig = __connman_service_get_ipconfig(service);
 632
 633         if (ipconfig == NULL) {
 634                 __connman_service_create_ipconfig(service, index);
 635
 636                 ipconfig = __connman_service_get_ipconfig(service);
 637                 if (ipconfig == NULL) {
 638                         DBG("Couldnt create ipconfig");
 639                         goto done;
 640                 }
 641         }
 642
 643         connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 644         __connman_ipconfig_set_index(ipconfig, index);
 645
 646
 647 done:
 648         provider->element.index = index;
 649 }
 650
 651 int connman_provider_get_index(struct connman_provider *provider)
 652 {
 653         return provider->element.index;
 654 }
 655
 656 static gint compare_priority(gconstpointer a, gconstpointer b)
 657 {
 658         return 0;
 659 }
 660
 661 static void clean_provider(gpointer key, gpointer value, gpointer user_data)
 662 {
 663         struct connman_provider *provider = value;
 664
 665         if (provider->driver != NULL && provider->driver->remove)
 666                 provider->driver->remove(provider);
 667 }
 668
 669 int connman_provider_driver_register(struct connman_provider_driver *driver)
 670 {
 671         DBG("driver %p name %s", driver, driver->name);
 672
 673         driver_list = g_slist_insert_sorted(driver_list, driver,
 674                                                         compare_priority);
 675         return 0;
 676 }
 677
 678 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 679 {
 680         DBG("driver %p name %s", driver, driver->name);
 681
 682         driver_list = g_slist_remove(driver_list, driver);
 683 }
 684
 685 static void provider_disconnect(gpointer key, gpointer value,
 686                                                 gpointer user_data)
 687 {
 688         struct connman_provider *provider = value;
 689
 690         __connman_provider_disconnect(provider);
 691 }
 692
 693 static void provider_offline_mode(connman_bool_t enabled)
 694 {
 695         DBG("enabled %d", enabled);
 696
 697         if (enabled == TRUE)
 698                 g_hash_table_foreach(provider_hash, provider_disconnect, NULL);
 699
 700 }
 701
 702 static void provider_default_changed(struct connman_service *service)
 703 {
 704         DBG("service %p", service);
 705
 706         if (service == NULL) {
 707                 /* When no services are active, then disconnect all VPNs */
 708                 provider_offline_mode(TRUE);
 709                 return;
 710         }
 711 }
 712
 713 static struct connman_notifier provider_notifier = {
 714         .name                   = "provider",
 715         .default_changed        = provider_default_changed,
 716         .offline_mode           = provider_offline_mode,
 717 };
 718
 719 int __connman_provider_init(void)
 720 {
 721         int err;
 722
 723         DBG("");
 724
 725         connection = connman_dbus_get_connection();
 726
 727         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 728                                                 NULL, unregister_provider);
 729
 730         err = connman_notifier_register(&provider_notifier);
 731         if (err < 0) {
 732                 g_hash_table_destroy(provider_hash);
 733                 dbus_connection_unref(connection);
 734         }
 735
 736         return err;
 737 }
 738
 739 void __connman_provider_cleanup(void)
 740 {
 741         DBG("");
 742
 743         connman_notifier_unregister(&provider_notifier);
 744
 745         g_hash_table_foreach(provider_hash, clean_provider, NULL);
 746
 747         g_hash_table_destroy(provider_hash);
 748         provider_hash = NULL;
 749
 750         dbus_connection_unref(connection);
 751 }