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;
 245                 char *second_ns;
 246                 int err;
 247
 248                 __connman_service_indicate_state(provider->vpn_service,
 249                                         CONNMAN_SERVICE_STATE_CONFIGURATION);
 250
 251                 type = CONNMAN_ELEMENT_TYPE_IPV4;
 252
 253                 element = connman_element_create(NULL);
 254                 if (element == NULL)
 255                         return -ENOMEM;
 256
 257                 element->type  = type;
 258                 element->index = provider->element.index;
 259
 260                 err = connman_provider_setup_vpn_ipv4(provider, element);
 261                 if (err < 0) {
 262                         connman_element_unref(element);
 263
 264                         __connman_service_indicate_state(service,
 265                                                 CONNMAN_SERVICE_STATE_FAILURE);
 266
 267                         return err;
 268                 }
 269
 270                 __connman_service_indicate_state(service,
 271                                                 CONNMAN_SERVICE_STATE_READY);
 272
 273                 __connman_service_set_domainname(service, provider->domain);
 274
 275                 name = connman_inet_ifname(provider->element.index);
 276
 277                 nameservers = g_strdup(provider->dns);
 278                 value = nameservers;
 279                 second_ns = strchr(value, ' ');
 280                 if (second_ns)
 281                         *(second_ns++) = 0;
 282                 __connman_service_append_nameserver(service, value);
 283                 value = second_ns;
 284
 285                 while (value) {
 286                         char *next = strchr(value, ' ');
 287                         if (next)
 288                                 *(next++) = 0;
 289
 290                         connman_resolver_append(name, provider->domain, value);
 291                         value = next;
 292                 }
 293
 294                 g_free(nameservers);
 295                 g_free(name);
 296
 297         } else {
 298                 connman_element_unregister_children(&provider->element);
 299                 __connman_service_indicate_state(service,
 300                                                 CONNMAN_SERVICE_STATE_IDLE);
 301         }
 302
 303         return 0;
 304 }
 305
 306 int connman_provider_set_state(struct connman_provider *provider,
 307                                         enum connman_provider_state state)
 308 {
 309         if (provider == NULL || provider->vpn_service == NULL)
 310                 return -EINVAL;
 311
 312         switch (state) {
 313         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 314                 return -EINVAL;
 315         case CONNMAN_PROVIDER_STATE_IDLE:
 316                 return set_connected(provider, FALSE);
 317         case CONNMAN_PROVIDER_STATE_CONNECT:
 318                 return __connman_service_indicate_state(provider->vpn_service,
 319                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 320         case CONNMAN_PROVIDER_STATE_READY:
 321                 return set_connected(provider, TRUE);
 322         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 323                 return __connman_service_indicate_state(provider->vpn_service,
 324                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 325         case CONNMAN_PROVIDER_STATE_FAILURE:
 326                 return __connman_service_indicate_state(provider->vpn_service,
 327                                         CONNMAN_SERVICE_STATE_FAILURE);
 328         }
 329
 330         return -EINVAL;
 331 }
 332
 333 static void unregister_provider(gpointer data)
 334 {
 335         struct connman_provider *provider = data;
 336
 337         DBG("provider %p", provider);
 338
 339         __connman_service_put(provider->vpn_service);
 340
 341         connman_element_unregister(&provider->element);
 342         connman_provider_unref(provider);
 343 }
 344
 345 static void provider_destruct(struct connman_element *element)
 346 {
 347         struct connman_provider *provider = element->private;
 348
 349         DBG("provider %p", provider);
 350
 351         g_free(provider->name);
 352         g_free(provider->type);
 353         g_free(provider->domain);
 354         g_free(provider->identifier);
 355         g_free(provider->dns);
 356 }
 357
 358 static void provider_initialize(struct connman_provider *provider)
 359 {
 360         DBG("provider %p", provider);
 361
 362         __connman_element_initialize(&provider->element);
 363
 364         provider->element.private = provider;
 365         provider->element.destruct = provider_destruct;
 366
 367         provider->element.ipv4.address = NULL;
 368         provider->element.ipv4.netmask = NULL;
 369         provider->element.ipv4.gateway = NULL;
 370         provider->element.ipv4.broadcast = NULL;
 371         provider->element.ipv4.pac = NULL;
 372
 373         provider->name = NULL;
 374         provider->type = NULL;
 375         provider->dns = NULL;
 376         provider->domain = NULL;
 377         provider->identifier = NULL;
 378 }
 379
 380 static struct connman_provider *connman_provider_new(void)
 381 {
 382         struct connman_provider *provider;
 383
 384         provider = g_try_new0(struct connman_provider, 1);
 385         if (provider == NULL)
 386                 return NULL;
 387
 388         DBG("provider %p", provider);
 389         provider_initialize(provider);
 390
 391         return provider;
 392 }
 393
 394 static struct connman_provider *connman_provider_get(const char *identifier)
 395 {
 396         struct connman_provider *provider;
 397
 398         provider = g_hash_table_lookup(provider_hash, identifier);
 399         if (provider != NULL)
 400                 return provider;
 401
 402         provider = connman_provider_new();
 403         if (provider == NULL)
 404                 return NULL;
 405
 406         DBG("provider %p", provider);
 407
 408         provider->identifier = g_strdup(identifier);
 409
 410         g_hash_table_insert(provider_hash, provider->identifier, provider);
 411
 412         provider->element.name = g_strdup(identifier);
 413         connman_element_register(&provider->element, NULL);
 414
 415         return provider;
 416 }
 417
 418 static void provider_dbus_ident(char *ident)
 419 {
 420         int i, len = strlen(ident);
 421
 422         for (i = 0; i < len; i++)
 423                 if (ident[i] == '.')
 424                         ident[i] = '_';
 425 }
 426
 427 int __connman_provider_create_and_connect(DBusMessage *msg)
 428 {
 429         struct connman_provider *provider;
 430         DBusMessageIter iter, array;
 431         const char *type = NULL, *name = NULL, *service_path = NULL;
 432         const char *host = NULL, *domain = NULL;
 433         char *ident;
 434         gboolean created = FALSE;
 435         int err;
 436
 437         dbus_message_iter_init(msg, &iter);
 438         dbus_message_iter_recurse(&iter, &array);
 439
 440         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 441                 DBusMessageIter entry, value;
 442                 const char *key;
 443
 444                 dbus_message_iter_recurse(&array, &entry);
 445                 dbus_message_iter_get_basic(&entry, &key);
 446
 447                 dbus_message_iter_next(&entry);
 448                 dbus_message_iter_recurse(&entry, &value);
 449
 450                 switch (dbus_message_iter_get_arg_type(&value)) {
 451                 case DBUS_TYPE_STRING:
 452                         if (g_str_equal(key, "Type") == TRUE)
 453                                 dbus_message_iter_get_basic(&value, &type);
 454                         else if (g_str_equal(key, "Name") == TRUE)
 455                                 dbus_message_iter_get_basic(&value, &name);
 456                         else if (g_str_equal(key, "Host") == TRUE)
 457                                 dbus_message_iter_get_basic(&value, &host);
 458                         else if (g_str_equal(key, "VPN.Domain") == TRUE)
 459                                 dbus_message_iter_get_basic(&value, &domain);
 460                         break;
 461                 }
 462
 463                 dbus_message_iter_next(&array);
 464         }
 465
 466         if (host == NULL || domain == NULL) {
 467                 err = -EINVAL;
 468                 goto failed;
 469         }
 470
 471         DBG("Type %s name %s", type, name);
 472
 473         if (type == NULL || name == NULL) {
 474                 err = -EOPNOTSUPP;
 475                 goto failed;
 476         }
 477
 478         ident = g_strdup_printf("%s_%s", host, domain);
 479         provider_dbus_ident(ident);
 480
 481         DBG("ident %s", ident);
 482
 483         provider = connman_provider_lookup(ident);
 484
 485         if (provider == NULL) {
 486                 created = TRUE;
 487                 provider = connman_provider_get(ident);
 488                 if (provider) {
 489                         provider->host = g_strdup(host);
 490                         provider->domain = g_strdup(domain);
 491                         provider->name = g_strdup(name);
 492                         provider->type = g_strdup(type);
 493                 }
 494         }
 495
 496         if (provider == NULL) {
 497                 DBG("can not create provider");
 498                 err = -EOPNOTSUPP;
 499                 goto failed;
 500         }
 501         dbus_message_iter_init(msg, &iter);
 502         dbus_message_iter_recurse(&iter, &array);
 503
 504         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 505                 DBusMessageIter entry, value;
 506                 const char *key, *str;
 507
 508                 dbus_message_iter_recurse(&array, &entry);
 509                 dbus_message_iter_get_basic(&entry, &key);
 510
 511                 dbus_message_iter_next(&entry);
 512                 dbus_message_iter_recurse(&entry, &value);
 513
 514                 switch (dbus_message_iter_get_arg_type(&value)) {
 515                 case DBUS_TYPE_STRING:
 516                         dbus_message_iter_get_basic(&value, &str);
 517                         connman_provider_set_string(provider, key, str);
 518                         break;
 519                 }
 520
 521                 dbus_message_iter_next(&array);
 522         }
 523
 524         g_free(ident);
 525
 526         if (provider == NULL) {
 527                 err = -EOPNOTSUPP;
 528                 goto failed;
 529         }
 530
 531         if (created == TRUE)
 532                 provider_probe(provider);
 533
 534         provider->vpn_service =
 535                         __connman_service_create_from_provider(provider);
 536         if (provider->vpn_service == NULL) {
 537                 err = -EOPNOTSUPP;
 538                 goto failed;
 539         }
 540
 541         err = __connman_service_connect(provider->vpn_service);
 542         if (err < 0 && err != -EINPROGRESS)
 543                 goto failed;
 544
 545         service_path = __connman_service_get_path(provider->vpn_service);
 546         g_dbus_send_reply(connection, msg,
 547                                 DBUS_TYPE_OBJECT_PATH, &service_path,
 548                                                         DBUS_TYPE_INVALID);
 549         return 0;
 550
 551 failed:
 552         if (provider != NULL && created == TRUE) {
 553                 DBG("can not connect delete provider");
 554                 connman_provider_unref(provider);
 555
 556                 if (provider->vpn_service != NULL)
 557                         __connman_service_put(provider->vpn_service);
 558         }
 559
 560         return err;
 561 }
 562
 563 const char * __connman_provider_get_ident(struct connman_provider *provider)
 564 {
 565         if (provider == NULL)
 566                 return NULL;
 567
 568         return provider->identifier;
 569 }
 570
 571 int connman_provider_set_string(struct connman_provider *provider,
 572                                         const char *key, const char *value)
 573 {
 574         DBG("provider %p key %s value %s", provider, key, value);
 575
 576         if (g_str_equal(key, "Type") == TRUE) {
 577                 g_free(provider->type);
 578                 provider->type = g_strdup(value);
 579         } else if (g_str_equal(key, "Name") == TRUE) {
 580                 g_free(provider->name);
 581                 provider->name = g_strdup(value);
 582         } else if (g_str_equal(key, "Gateway") == TRUE) {
 583                 g_free(provider->element.ipv4.gateway);
 584                 provider->element.ipv4.gateway = g_strdup(value);
 585         } else if (g_str_equal(key, "Address") == TRUE) {
 586                 g_free(provider->element.ipv4.address);
 587                 provider->element.ipv4.address = g_strdup(value);
 588         } else if (g_str_equal(key, "Netmask") == TRUE) {
 589                 g_free(provider->element.ipv4.netmask);
 590                 provider->element.ipv4.netmask = g_strdup(value);
 591         } else if (g_str_equal(key, "PAC") == TRUE) {
 592                 g_free(provider->element.ipv4.pac);
 593                 provider->element.ipv4.pac = g_strdup(value);
 594                 __connman_service_set_proxy_autoconfig(provider->vpn_service,
 595                                                                         value);
 596         } else if (g_str_equal(key, "DNS") == TRUE) {
 597                 g_free(provider->dns);
 598                 provider->dns = g_strdup(value);
 599         } else if (g_str_equal(key, "Domain") == TRUE) {
 600                 g_free(provider->domain);
 601                 provider->domain = g_strdup(value);
 602         }
 603
 604         return connman_element_set_string(&provider->element, key, value);
 605 }
 606
 607 const char *connman_provider_get_string(struct connman_provider *provider,
 608                                                         const char *key)
 609 {
 610         DBG("provider %p key %s", provider, key);
 611
 612         if (g_str_equal(key, "Type") == TRUE)
 613                 return provider->type;
 614         else if (g_str_equal(key, "Name") == TRUE)
 615                 return provider->name;
 616
 617         return connman_element_get_string(&provider->element, key);
 618 }
 619
 620 void *connman_provider_get_data(struct connman_provider *provider)
 621 {
 622         return provider->driver_data;
 623 }
 624
 625 void connman_provider_set_data(struct connman_provider *provider, void *data)
 626 {
 627         provider->driver_data = data;
 628 }
 629
 630 void connman_provider_set_index(struct connman_provider *provider, int index)
 631 {
 632         struct connman_service *service = provider->vpn_service;
 633         struct connman_ipconfig *ipconfig;
 634
 635         DBG("");
 636
 637         ipconfig = __connman_service_get_ipconfig(service);
 638
 639         if (ipconfig == NULL) {
 640                 __connman_service_create_ipconfig(service, index);
 641
 642                 ipconfig = __connman_service_get_ipconfig(service);
 643                 if (ipconfig == NULL) {
 644                         DBG("Couldnt create ipconfig");
 645                         goto done;
 646                 }
 647         }
 648
 649         connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 650         __connman_ipconfig_set_index(ipconfig, index);
 651
 652
 653 done:
 654         provider->element.index = index;
 655 }
 656
 657 int connman_provider_get_index(struct connman_provider *provider)
 658 {
 659         return provider->element.index;
 660 }
 661
 662 static gint compare_priority(gconstpointer a, gconstpointer b)
 663 {
 664         return 0;
 665 }
 666
 667 static void clean_provider(gpointer key, gpointer value, gpointer user_data)
 668 {
 669         struct connman_provider *provider = value;
 670
 671         if (provider->driver != NULL && provider->driver->remove)
 672                 provider->driver->remove(provider);
 673 }
 674
 675 int connman_provider_driver_register(struct connman_provider_driver *driver)
 676 {
 677         DBG("driver %p name %s", driver, driver->name);
 678
 679         driver_list = g_slist_insert_sorted(driver_list, driver,
 680                                                         compare_priority);
 681         return 0;
 682 }
 683
 684 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 685 {
 686         DBG("driver %p name %s", driver, driver->name);
 687
 688         driver_list = g_slist_remove(driver_list, driver);
 689 }
 690
 691 static void provider_disconnect(gpointer key, gpointer value,
 692                                                 gpointer user_data)
 693 {
 694         struct connman_provider *provider = value;
 695
 696         __connman_provider_disconnect(provider);
 697 }
 698
 699 static void provider_offline_mode(connman_bool_t enabled)
 700 {
 701         DBG("enabled %d", enabled);
 702
 703         if (enabled == TRUE)
 704                 g_hash_table_foreach(provider_hash, provider_disconnect, NULL);
 705
 706 }
 707
 708 static struct connman_notifier provider_notifier = {
 709         .name                   = "provider",
 710         .offline_mode           = provider_offline_mode,
 711 };
 712
 713 int __connman_provider_init(void)
 714 {
 715         int err;
 716
 717         DBG("");
 718
 719         connection = connman_dbus_get_connection();
 720
 721         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 722                                                 NULL, unregister_provider);
 723
 724         err = connman_notifier_register(&provider_notifier);
 725         if (err < 0) {
 726                 g_hash_table_destroy(provider_hash);
 727                 dbus_connection_unref(connection);
 728         }
 729
 730         return err;
 731 }
 732
 733 void __connman_provider_cleanup(void)
 734 {
 735         DBG("");
 736
 737         connman_notifier_unregister(&provider_notifier);
 738
 739         g_hash_table_foreach(provider_hash, clean_provider, NULL);
 740
 741         g_hash_table_destroy(provider_hash);
 742         provider_hash = NULL;
 743
 744         dbus_connection_unref(connection);
 745 }