src/technology.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 <string.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GSList *technology_list = NULL;
  36
  37 /*
  38  * List of devices with no technology associated with them either because of
  39  * no compiled in support or the driver is not yet loaded.
  40 */
  41 static GSList *techless_device_list = NULL;
  42 static GHashTable *rfkill_list;
  43
  44 static connman_bool_t global_offlinemode;
  45
  46 struct connman_rfkill {
  47         unsigned int index;
  48         enum connman_service_type type;
  49         connman_bool_t softblock;
  50         connman_bool_t hardblock;
  51 };
  52
  53 struct connman_technology {
  54         int refcount;
  55         enum connman_service_type type;
  56         char *path;
  57         GSList *device_list;
  58         int enabled;
  59         char *regdom;
  60         connman_bool_t connected;
  61
  62         connman_bool_t tethering;
  63         char *tethering_ident;
  64         char *tethering_passphrase;
  65
  66         connman_bool_t enable_persistent; /* Save the tech state */
  67
  68         struct connman_technology_driver *driver;
  69         void *driver_data;
  70
  71         DBusMessage *pending_reply;
  72         guint pending_timeout;
  73
  74         GSList *scan_pending;
  75
  76         connman_bool_t hardblocked;
  77         connman_bool_t dbus_registered;
  78 };
  79
  80 static GSList *driver_list = NULL;
  81
  82 static gint compare_priority(gconstpointer a, gconstpointer b)
  83 {
  84         const struct connman_technology_driver *driver1 = a;
  85         const struct connman_technology_driver *driver2 = b;
  86
  87         return driver2->priority - driver1->priority;
  88 }
  89
  90 static void rfkill_check(gpointer key, gpointer value, gpointer user_data)
  91 {
  92         struct connman_rfkill *rfkill = value;
  93         enum connman_service_type type = GPOINTER_TO_INT(user_data);
  94
  95         /* Calling _technology_rfkill_add will update the tech. */
  96         if (rfkill->type == type)
  97                 __connman_technology_add_rfkill(rfkill->index, type,
  98                                 rfkill->softblock, rfkill->hardblock);
  99 }
 100
 101 /**
 102  * connman_technology_driver_register:
 103  * @driver: Technology driver definition
 104  *
 105  * Register a new technology driver
 106  *
 107  * Returns: %0 on success
 108  */
 109 int connman_technology_driver_register(struct connman_technology_driver *driver)
 110 {
 111         GSList *list;
 112         struct connman_device *device;
 113         enum connman_service_type type;
 114
 115         DBG("Registering %s driver", driver->name);
 116
 117         driver_list = g_slist_insert_sorted(driver_list, driver,
 118                                                         compare_priority);
 119
 120         if (techless_device_list == NULL)
 121                 goto check_rfkill;
 122
 123         /*
 124          * Check for technology less devices if this driver
 125          * can service any of them.
 126         */
 127         for (list = techless_device_list; list; list = list->next) {
 128                 device = list->data;
 129
 130                 type = __connman_device_get_service_type(device);
 131                 if (type != driver->type)
 132                         continue;
 133
 134                 techless_device_list = g_slist_remove(techless_device_list,
 135                                                                 device);
 136
 137                 __connman_technology_add_device(device);
 138         }
 139
 140 check_rfkill:
 141         /* Check for orphaned rfkill switches. */
 142         g_hash_table_foreach(rfkill_list, rfkill_check,
 143                                         GINT_TO_POINTER(driver->type));
 144
 145         return 0;
 146 }
 147
 148 /**
 149  * connman_technology_driver_unregister:
 150  * @driver: Technology driver definition
 151  *
 152  * Remove a previously registered technology driver
 153  */
 154 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 155 {
 156         GSList *list;
 157         struct connman_technology *technology;
 158
 159         DBG("Unregistering driver %p name %s", driver, driver->name);
 160
 161         for (list = technology_list; list; list = list->next) {
 162                 technology = list->data;
 163
 164                 if (technology->driver == NULL)
 165                         continue;
 166
 167                 if (technology->type == driver->type) {
 168                         technology->driver->remove(technology);
 169                         technology->driver = NULL;
 170                 }
 171         }
 172
 173         driver_list = g_slist_remove(driver_list, driver);
 174 }
 175
 176 static void tethering_changed(struct connman_technology *technology)
 177 {
 178         connman_bool_t tethering = technology->tethering;
 179
 180         connman_dbus_property_changed_basic(technology->path,
 181                                 CONNMAN_TECHNOLOGY_INTERFACE, "Tethering",
 182                                                 DBUS_TYPE_BOOLEAN, &tethering);
 183 }
 184
 185 void connman_technology_tethering_notify(struct connman_technology *technology,
 186                                                         connman_bool_t enabled)
 187 {
 188         GSList *list;
 189
 190         DBG("technology %p enabled %u", technology, enabled);
 191
 192         if (technology->tethering == enabled)
 193                 return;
 194
 195         technology->tethering = enabled;
 196
 197         tethering_changed(technology);
 198
 199         if (enabled == TRUE)
 200                 __connman_tethering_set_enabled();
 201         else {
 202                 for (list = technology_list; list; list = list->next) {
 203                         struct connman_technology *other_tech = list->data;
 204                         if (other_tech->tethering == TRUE)
 205                                 break;
 206                 }
 207                 if (list == NULL)
 208                         __connman_tethering_set_disabled();
 209         }
 210 }
 211
 212 static int set_tethering(struct connman_technology *technology,
 213                                 connman_bool_t enabled)
 214 {
 215         const char *ident, *passphrase, *bridge;
 216
 217         ident = technology->tethering_ident;
 218         passphrase = technology->tethering_passphrase;
 219
 220         if (technology->driver == NULL ||
 221                         technology->driver->set_tethering == NULL)
 222                 return -EOPNOTSUPP;
 223
 224         bridge = __connman_tethering_get_bridge();
 225         if (bridge == NULL)
 226                 return -EOPNOTSUPP;
 227
 228         if (technology->type == CONNMAN_SERVICE_TYPE_WIFI &&
 229             (ident == NULL || passphrase == NULL))
 230                 return -EINVAL;
 231
 232         return technology->driver->set_tethering(technology, ident, passphrase,
 233                                                         bridge, enabled);
 234 }
 235
 236 void connman_technology_regdom_notify(struct connman_technology *technology,
 237                                                         const char *alpha2)
 238 {
 239         DBG("");
 240
 241         if (alpha2 == NULL)
 242                 connman_error("Failed to set regulatory domain");
 243         else
 244                 DBG("Regulatory domain set to %s", alpha2);
 245
 246         g_free(technology->regdom);
 247         technology->regdom = g_strdup(alpha2);
 248 }
 249
 250 static int set_regdom_by_device(struct connman_technology *technology,
 251                                                         const char *alpha2)
 252 {
 253         GSList *list;
 254
 255         for (list = technology->device_list; list; list = list->next) {
 256                 struct connman_device *device = list->data;
 257
 258                 if (connman_device_set_regdom(device, alpha2) != 0)
 259                         return -ENOTSUP;
 260         }
 261
 262         return 0;
 263 }
 264
 265 int connman_technology_set_regdom(const char *alpha2)
 266 {
 267         GSList *list;
 268
 269         for (list = technology_list; list; list = list->next) {
 270                 struct connman_technology *technology = list->data;
 271
 272                 if (set_regdom_by_device(technology, alpha2) != 0) {
 273                         if (technology->driver == NULL)
 274                                 continue;
 275
 276                         if (technology->driver->set_regdom != NULL)
 277                                 technology->driver->set_regdom(technology,
 278                                                                 alpha2);
 279                 }
 280         }
 281
 282         return 0;
 283 }
 284
 285 static void free_rfkill(gpointer data)
 286 {
 287         struct connman_rfkill *rfkill = data;
 288
 289         g_free(rfkill);
 290 }
 291
 292 static const char *get_name(enum connman_service_type type)
 293 {
 294         switch (type) {
 295         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 296         case CONNMAN_SERVICE_TYPE_SYSTEM:
 297         case CONNMAN_SERVICE_TYPE_GPS:
 298         case CONNMAN_SERVICE_TYPE_VPN:
 299         case CONNMAN_SERVICE_TYPE_GADGET:
 300                 break;
 301         case CONNMAN_SERVICE_TYPE_ETHERNET:
 302                 return "Wired";
 303         case CONNMAN_SERVICE_TYPE_WIFI:
 304                 return "WiFi";
 305         case CONNMAN_SERVICE_TYPE_WIMAX:
 306                 return "WiMAX";
 307         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 308                 return "Bluetooth";
 309         case CONNMAN_SERVICE_TYPE_CELLULAR:
 310                 return "Cellular";
 311         }
 312
 313         return NULL;
 314 }
 315
 316 static void technology_save(struct connman_technology *technology)
 317 {
 318         GKeyFile *keyfile;
 319         gchar *identifier;
 320
 321         DBG("technology %p", technology);
 322
 323         keyfile = __connman_storage_load_global();
 324         if (keyfile == NULL)
 325                 keyfile = g_key_file_new();
 326
 327         identifier = g_strdup_printf("%s", get_name(technology->type));
 328         if (identifier == NULL)
 329                 goto done;
 330
 331         g_key_file_set_boolean(keyfile, identifier, "Enable",
 332                                 technology->enable_persistent);
 333
 334         if (technology->tethering_ident != NULL)
 335                 g_key_file_set_string(keyfile, identifier,
 336                                         "Tethering.Identifier",
 337                                         technology->tethering_ident);
 338
 339         if (technology->tethering_passphrase != NULL)
 340                 g_key_file_set_string(keyfile, identifier,
 341                                         "Tethering.Passphrase",
 342                                         technology->tethering_passphrase);
 343
 344 done:
 345         g_free(identifier);
 346
 347         __connman_storage_save_global(keyfile);
 348
 349         g_key_file_free(keyfile);
 350
 351         return;
 352 }
 353
 354 static void technology_load(struct connman_technology *technology)
 355 {
 356         GKeyFile *keyfile;
 357         gchar *identifier;
 358         GError *error = NULL;
 359         connman_bool_t enable;
 360
 361         DBG("technology %p", technology);
 362
 363         keyfile = __connman_storage_load_global();
 364         /* Fallback on disabling technology if file not found. */
 365         if (keyfile == NULL) {
 366                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 367                         /* We enable ethernet by default */
 368                         technology->enable_persistent = TRUE;
 369                 else
 370                         technology->enable_persistent = FALSE;
 371                 return;
 372         }
 373
 374         identifier = g_strdup_printf("%s", get_name(technology->type));
 375         if (identifier == NULL)
 376                 goto done;
 377
 378         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 379         if (error == NULL)
 380                 technology->enable_persistent = enable;
 381         else {
 382                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 383                         technology->enable_persistent = TRUE;
 384                 else
 385                         technology->enable_persistent = FALSE;
 386
 387                 technology_save(technology);
 388                 g_clear_error(&error);
 389         }
 390
 391         technology->tethering_ident = g_key_file_get_string(keyfile,
 392                                 identifier, "Tethering.Identifier", NULL);
 393
 394         technology->tethering_passphrase = g_key_file_get_string(keyfile,
 395                                 identifier, "Tethering.Passphrase", NULL);
 396 done:
 397         g_free(identifier);
 398
 399         g_key_file_free(keyfile);
 400
 401         return;
 402 }
 403
 404 connman_bool_t __connman_technology_get_offlinemode(void)
 405 {
 406         return global_offlinemode;
 407 }
 408
 409 static void connman_technology_save_offlinemode()
 410 {
 411         GKeyFile *keyfile;
 412
 413         keyfile = __connman_storage_load_global();
 414         if (keyfile == NULL)
 415                 keyfile = g_key_file_new();
 416
 417         g_key_file_set_boolean(keyfile, "global",
 418                                         "OfflineMode", global_offlinemode);
 419
 420         __connman_storage_save_global(keyfile);
 421
 422         g_key_file_free(keyfile);
 423
 424         return;
 425 }
 426
 427 static connman_bool_t connman_technology_load_offlinemode()
 428 {
 429         GKeyFile *keyfile;
 430         GError *error = NULL;
 431         connman_bool_t offlinemode;
 432
 433         /* If there is a error, we enable offlinemode */
 434         keyfile = __connman_storage_load_global();
 435         if (keyfile == NULL)
 436                 return FALSE;
 437
 438         offlinemode = g_key_file_get_boolean(keyfile, "global",
 439                                                 "OfflineMode", &error);
 440         if (error != NULL) {
 441                 offlinemode = FALSE;
 442                 g_clear_error(&error);
 443         }
 444
 445         g_key_file_free(keyfile);
 446
 447         return offlinemode;
 448 }
 449
 450 static void append_properties(DBusMessageIter *iter,
 451                 struct connman_technology *technology)
 452 {
 453         DBusMessageIter dict;
 454         const char *str;
 455         connman_bool_t powered;
 456
 457         connman_dbus_dict_open(iter, &dict);
 458
 459         str = get_name(technology->type);
 460         if (str != NULL)
 461                 connman_dbus_dict_append_basic(&dict, "Name",
 462                                                 DBUS_TYPE_STRING, &str);
 463
 464         str = __connman_service_type2string(technology->type);
 465         if (str != NULL)
 466                 connman_dbus_dict_append_basic(&dict, "Type",
 467                                                 DBUS_TYPE_STRING, &str);
 468
 469         __sync_synchronize();
 470         if (technology->enabled > 0)
 471                 powered = TRUE;
 472         else
 473                 powered = FALSE;
 474         connman_dbus_dict_append_basic(&dict, "Powered",
 475                                         DBUS_TYPE_BOOLEAN, &powered);
 476
 477         connman_dbus_dict_append_basic(&dict, "Connected",
 478                                         DBUS_TYPE_BOOLEAN,
 479                                         &technology->connected);
 480
 481         connman_dbus_dict_append_basic(&dict, "Tethering",
 482                                         DBUS_TYPE_BOOLEAN,
 483                                         &technology->tethering);
 484
 485         if (technology->tethering_ident != NULL)
 486                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 487                                                 DBUS_TYPE_STRING,
 488                                                 &technology->tethering_ident);
 489
 490         if (technology->tethering_passphrase != NULL)
 491                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 492                                                 DBUS_TYPE_STRING,
 493                                                 &technology->tethering_passphrase);
 494
 495         connman_dbus_dict_close(iter, &dict);
 496 }
 497
 498 static void technology_added_signal(struct connman_technology *technology)
 499 {
 500         DBusMessage *signal;
 501         DBusMessageIter iter;
 502
 503         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 504                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 505         if (signal == NULL)
 506                 return;
 507
 508         dbus_message_iter_init_append(signal, &iter);
 509         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 510                                                         &technology->path);
 511         append_properties(&iter, technology);
 512
 513         dbus_connection_send(connection, signal, NULL);
 514         dbus_message_unref(signal);
 515 }
 516
 517 static void technology_removed_signal(struct connman_technology *technology)
 518 {
 519         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 520                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 521                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 522                         DBUS_TYPE_INVALID);
 523 }
 524
 525 static DBusMessage *get_properties(DBusConnection *conn,
 526                                         DBusMessage *message, void *user_data)
 527 {
 528         struct connman_technology *technology = user_data;
 529         DBusMessage *reply;
 530         DBusMessageIter iter;
 531
 532         reply = dbus_message_new_method_return(message);
 533         if (reply == NULL)
 534                 return NULL;
 535
 536         dbus_message_iter_init_append(reply, &iter);
 537         append_properties(&iter, technology);
 538
 539         return reply;
 540 }
 541
 542 void __connman_technology_list_struct(DBusMessageIter *array)
 543 {
 544         GSList *list;
 545         DBusMessageIter entry;
 546
 547         for (list = technology_list; list; list = list->next) {
 548                 struct connman_technology *technology = list->data;
 549
 550                 if (technology->path == NULL)
 551                         continue;
 552
 553                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 554                                 NULL, &entry);
 555                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 556                                 &technology->path);
 557                 append_properties(&entry, technology);
 558                 dbus_message_iter_close_container(array, &entry);
 559         }
 560 }
 561
 562 static gboolean technology_pending_reply(gpointer user_data)
 563 {
 564         struct connman_technology *technology = user_data;
 565         DBusMessage *reply;
 566
 567         /* Power request timedout, send ETIMEDOUT. */
 568         if (technology->pending_reply != NULL) {
 569                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 570                 if (reply != NULL)
 571                         g_dbus_send_message(connection, reply);
 572
 573                 dbus_message_unref(technology->pending_reply);
 574                 technology->pending_reply = NULL;
 575                 technology->pending_timeout = 0;
 576         }
 577
 578         return FALSE;
 579 }
 580
 581 static int technology_enable(struct connman_technology *technology,
 582                                                 connman_bool_t hardblock)
 583 {
 584         GSList *list;
 585         int err = 0;
 586
 587         DBG("technology %p enable", technology);
 588
 589         __sync_synchronize();
 590         if (technology->enabled > 0) {
 591                 err = -EALREADY;
 592                 goto done;
 593         }
 594
 595         if (technology->pending_reply != NULL) {
 596                 err = -EBUSY;
 597                 goto done;
 598         }
 599
 600         if (hardblock == TRUE && technology->enable_persistent == FALSE)
 601                 goto done;
 602
 603         __connman_rfkill_block(technology->type, FALSE);
 604
 605         for (list = technology->device_list; list; list = list->next) {
 606                 struct connman_device *device = list->data;
 607
 608                 err = __connman_device_enable(device);
 609         }
 610
 611 done:
 612         return err;
 613 }
 614
 615 static int technology_disable(struct connman_technology *technology,
 616                                                 connman_bool_t hardblock)
 617 {
 618         GSList *list;
 619         int err = 0;
 620
 621         DBG("technology %p disable", technology);
 622
 623         __sync_synchronize();
 624         if (technology->enabled == 0) {
 625                 err = -EALREADY;
 626                 goto done;
 627         }
 628
 629         if (technology->pending_reply != NULL) {
 630                 err = -EBUSY;
 631                 goto done;
 632         }
 633
 634         if (technology->tethering == TRUE)
 635                 set_tethering(technology, FALSE);
 636
 637         if (hardblock == FALSE)
 638                 __connman_rfkill_block(technology->type, TRUE);
 639
 640         for (list = technology->device_list; list; list = list->next) {
 641                 struct connman_device *device = list->data;
 642
 643                 err = __connman_device_disable(device);
 644         }
 645
 646 done:
 647         return err;
 648 }
 649
 650 static DBusMessage *set_powered(struct connman_technology *technology,
 651                                 DBusMessage *msg, connman_bool_t powered)
 652 {
 653         DBusMessage *reply = NULL;
 654         int err = 0;
 655
 656         if (technology->hardblocked == TRUE) {
 657                 err = -EACCES;
 658                 goto make_reply;
 659         }
 660
 661         if (powered == TRUE)
 662                 err = technology_enable(technology, FALSE);
 663         else
 664                 err = technology_disable(technology, FALSE);
 665
 666         if (err != -EBUSY) {
 667                 technology->enable_persistent = powered;
 668                 technology_save(technology);
 669         }
 670
 671 make_reply:
 672         if (err == -EINPROGRESS) {
 673                 technology->pending_reply = dbus_message_ref(msg);
 674                 technology->pending_timeout = g_timeout_add_seconds(10,
 675                                         technology_pending_reply, technology);
 676         } else if (err == -EALREADY) {
 677                 if (powered == TRUE)
 678                         reply = __connman_error_already_enabled(msg);
 679                 else
 680                         reply = __connman_error_already_disabled(msg);
 681         } else if (err < 0)
 682                 reply = __connman_error_failed(msg, -err);
 683         else
 684                 reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 685
 686         return reply;
 687 }
 688
 689 static DBusMessage *set_property(DBusConnection *conn,
 690                                         DBusMessage *msg, void *data)
 691 {
 692         struct connman_technology *technology = data;
 693         DBusMessageIter iter, value;
 694         const char *name;
 695         int type;
 696
 697         DBG("conn %p", conn);
 698
 699         if (dbus_message_iter_init(msg, &iter) == FALSE)
 700                 return __connman_error_invalid_arguments(msg);
 701
 702         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 703                 return __connman_error_invalid_arguments(msg);
 704
 705         dbus_message_iter_get_basic(&iter, &name);
 706         dbus_message_iter_next(&iter);
 707
 708         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 709                 return __connman_error_invalid_arguments(msg);
 710
 711         dbus_message_iter_recurse(&iter, &value);
 712
 713         type = dbus_message_iter_get_arg_type(&value);
 714
 715         DBG("property %s", name);
 716
 717         if (g_str_equal(name, "Tethering") == TRUE) {
 718                 int err;
 719                 connman_bool_t tethering;
 720
 721                 if (type != DBUS_TYPE_BOOLEAN)
 722                         return __connman_error_invalid_arguments(msg);
 723
 724                 dbus_message_iter_get_basic(&value, &tethering);
 725
 726                 if (technology->tethering == tethering) {
 727                         if (tethering == FALSE)
 728                                 return __connman_error_already_disabled(msg);
 729                         else
 730                                 return __connman_error_already_enabled(msg);
 731                 }
 732
 733                 err = set_tethering(technology, tethering);
 734                 if (err < 0)
 735                         return __connman_error_failed(msg, -err);
 736
 737         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 738                 const char *str;
 739
 740                 dbus_message_iter_get_basic(&value, &str);
 741
 742                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 743                         return __connman_error_not_supported(msg);
 744
 745                 if (strlen(str) < 1 || strlen(str) > 32)
 746                         return __connman_error_invalid_arguments(msg);
 747
 748                 if (g_strcmp0(technology->tethering_ident, str) != 0) {
 749                         g_free(technology->tethering_ident);
 750                         technology->tethering_ident = g_strdup(str);
 751                         technology_save(technology);
 752
 753                         connman_dbus_property_changed_basic(technology->path,
 754                                                 CONNMAN_TECHNOLOGY_INTERFACE,
 755                                                 "TetheringIdentifier",
 756                                                 DBUS_TYPE_STRING,
 757                                                 &technology->tethering_ident);
 758                 }
 759         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 760                 const char *str;
 761
 762                 dbus_message_iter_get_basic(&value, &str);
 763
 764                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 765                         return __connman_error_not_supported(msg);
 766
 767                 if (strlen(str) < 8 || strlen(str) > 63)
 768                         return __connman_error_passphrase_required(msg);
 769
 770                 if (g_strcmp0(technology->tethering_passphrase, str) != 0) {
 771                         g_free(technology->tethering_passphrase);
 772                         technology->tethering_passphrase = g_strdup(str);
 773                         technology_save(technology);
 774
 775                         connman_dbus_property_changed_basic(technology->path,
 776                                         CONNMAN_TECHNOLOGY_INTERFACE,
 777                                         "TetheringPassphrase",
 778                                         DBUS_TYPE_STRING,
 779                                         &technology->tethering_passphrase);
 780                 }
 781         } else if (g_str_equal(name, "Powered") == TRUE) {
 782                 connman_bool_t enable;
 783
 784                 if (type != DBUS_TYPE_BOOLEAN)
 785                         return __connman_error_invalid_arguments(msg);
 786
 787                 dbus_message_iter_get_basic(&value, &enable);
 788
 789                 return set_powered(technology, msg, enable);
 790         } else
 791                 return __connman_error_invalid_property(msg);
 792
 793         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 794 }
 795
 796 static struct connman_technology *technology_find(enum connman_service_type type)
 797 {
 798         GSList *list;
 799
 800         DBG("type %d", type);
 801
 802         for (list = technology_list; list; list = list->next) {
 803                 struct connman_technology *technology = list->data;
 804
 805                 if (technology->type == type)
 806                         return technology;
 807         }
 808
 809         return NULL;
 810 }
 811
 812 static void reply_scan_pending(struct connman_technology *technology, int err)
 813 {
 814         DBusMessage *reply;
 815
 816         DBG("technology %p err %d", technology, err);
 817
 818         while (technology->scan_pending != NULL) {
 819                 DBusMessage *msg = technology->scan_pending->data;
 820
 821                 DBG("reply to %s", dbus_message_get_sender(msg));
 822
 823                 if (err == 0)
 824                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 825                 else
 826                         reply = __connman_error_failed(msg, -err);
 827                 g_dbus_send_message(connection, reply);
 828                 dbus_message_unref(msg);
 829
 830                 technology->scan_pending =
 831                         g_slist_delete_link(technology->scan_pending,
 832                                         technology->scan_pending);
 833         }
 834 }
 835
 836 void __connman_technology_scan_started(struct connman_device *device)
 837 {
 838         DBG("device %p", device);
 839 }
 840
 841 void __connman_technology_scan_stopped(struct connman_device *device)
 842 {
 843         int count = 0;
 844         struct connman_technology *technology;
 845         enum connman_service_type type;
 846         GSList *list;
 847
 848         type = __connman_device_get_service_type(device);
 849         technology = technology_find(type);
 850
 851         DBG("technology %p device %p", technology, device);
 852
 853         if (technology == NULL)
 854                 return;
 855
 856         for (list = technology->device_list; list != NULL; list = list->next) {
 857                 struct connman_device *other_device = list->data;
 858
 859                 if (device == other_device)
 860                         continue;
 861
 862                 if (__connman_device_get_service_type(other_device) != type)
 863                         continue;
 864
 865                 if (connman_device_get_scanning(other_device) == TRUE)
 866                         count += 1;
 867         }
 868
 869         if (count == 0)
 870                 reply_scan_pending(technology, 0);
 871 }
 872
 873 void __connman_technology_notify_regdom_by_device(struct connman_device *device,
 874                                                 int result, const char *alpha2)
 875 {
 876         struct connman_technology *technology;
 877         enum connman_service_type type;
 878
 879         type = __connman_device_get_service_type(device);
 880         technology = technology_find(type);
 881
 882         if (technology == NULL)
 883                 return;
 884
 885         if (result < 0) {
 886                 if (technology->driver != NULL &&
 887                                 technology->driver->set_regdom != NULL) {
 888                         technology->driver->set_regdom(technology, alpha2);
 889                         return;
 890                 }
 891
 892                 alpha2 = NULL;
 893         }
 894
 895         connman_technology_regdom_notify(technology, alpha2);
 896 }
 897
 898 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 899 {
 900         struct connman_technology *technology = data;
 901         int err;
 902
 903         DBG ("technology %p request from %s", technology,
 904                         dbus_message_get_sender(msg));
 905
 906         dbus_message_ref(msg);
 907         technology->scan_pending =
 908                 g_slist_prepend(technology->scan_pending, msg);
 909
 910         err = __connman_device_request_scan(technology->type);
 911         if (err < 0)
 912                 reply_scan_pending(technology, err);
 913
 914         return NULL;
 915 }
 916
 917 static const GDBusMethodTable technology_methods[] = {
 918         { GDBUS_DEPRECATED_METHOD("GetProperties",
 919                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 920                         get_properties) },
 921         { GDBUS_ASYNC_METHOD("SetProperty",
 922                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 923                         NULL, set_property) },
 924         { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
 925         { },
 926 };
 927
 928 static const GDBusSignalTable technology_signals[] = {
 929         { GDBUS_SIGNAL("PropertyChanged",
 930                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 931         { },
 932 };
 933
 934 static gboolean technology_dbus_register(struct connman_technology *technology)
 935 {
 936         if (technology->dbus_registered == TRUE)
 937                 return TRUE;
 938
 939         if (g_dbus_register_interface(connection, technology->path,
 940                                 CONNMAN_TECHNOLOGY_INTERFACE,
 941                                 technology_methods, technology_signals,
 942                                 NULL, technology, NULL) == FALSE) {
 943                 connman_error("Failed to register %s", technology->path);
 944                 return FALSE;
 945         }
 946
 947         technology_added_signal(technology);
 948         technology->dbus_registered = TRUE;
 949
 950         return TRUE;
 951 }
 952
 953 static struct connman_technology *technology_get(enum connman_service_type type)
 954 {
 955         struct connman_technology *technology;
 956         struct connman_technology_driver *driver = NULL;
 957         const char *str;
 958         GSList *list;
 959         int err;
 960
 961         DBG("type %d", type);
 962
 963         str = __connman_service_type2string(type);
 964         if (str == NULL)
 965                 return NULL;
 966
 967         technology = technology_find(type);
 968         if (technology != NULL) {
 969                 __sync_fetch_and_add(&technology->refcount, 1);
 970                 return technology;
 971         }
 972
 973         /* First check if we have a driver for this technology type */
 974         for (list = driver_list; list; list = list->next) {
 975                 driver = list->data;
 976
 977                 if (driver->type == type)
 978                         break;
 979                 else
 980                         driver = NULL;
 981         }
 982
 983         if (driver == NULL) {
 984                 DBG("No matching driver found for %s.",
 985                                 __connman_service_type2string(type));
 986                 return NULL;
 987         }
 988
 989         technology = g_try_new0(struct connman_technology, 1);
 990         if (technology == NULL)
 991                 return NULL;
 992
 993         technology->refcount = 1;
 994
 995         if (type == CONNMAN_SERVICE_TYPE_ETHERNET)
 996                 technology->hardblocked = FALSE;
 997         else
 998                 technology->hardblocked = TRUE;
 999
1000         technology->type = type;
1001         technology->path = g_strdup_printf("%s/technology/%s",
1002                                                         CONNMAN_PATH, str);
1003
1004         technology->device_list = NULL;
1005
1006         technology->pending_reply = NULL;
1007
1008         technology_load(technology);
1009
1010         if (technology_dbus_register(technology) == FALSE) {
1011                 g_free(technology);
1012                 return NULL;
1013         }
1014
1015         technology_list = g_slist_prepend(technology_list, technology);
1016
1017         technology->driver = driver;
1018         err = driver->probe(technology);
1019         if (err != 0)
1020                 DBG("Driver probe failed for technology %p", technology);
1021
1022         DBG("technology %p", technology);
1023
1024         return technology;
1025 }
1026
1027 static void technology_dbus_unregister(struct connman_technology *technology)
1028 {
1029         if (technology->dbus_registered == FALSE)
1030                 return;
1031
1032         technology_removed_signal(technology);
1033         g_dbus_unregister_interface(connection, technology->path,
1034                 CONNMAN_TECHNOLOGY_INTERFACE);
1035
1036         technology->dbus_registered = FALSE;
1037 }
1038
1039 static void technology_put(struct connman_technology *technology)
1040 {
1041         DBG("technology %p", technology);
1042
1043         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
1044                 return;
1045
1046         reply_scan_pending(technology, -EINTR);
1047
1048         if (technology->driver) {
1049                 technology->driver->remove(technology);
1050                 technology->driver = NULL;
1051         }
1052
1053         technology_list = g_slist_remove(technology_list, technology);
1054
1055         technology_dbus_unregister(technology);
1056
1057         g_slist_free(technology->device_list);
1058
1059         g_free(technology->path);
1060         g_free(technology->regdom);
1061         g_free(technology->tethering_ident);
1062         g_free(technology->tethering_passphrase);
1063         g_free(technology);
1064 }
1065
1066 void __connman_technology_add_interface(enum connman_service_type type,
1067                                 int index, const char *name, const char *ident)
1068 {
1069         struct connman_technology *technology;
1070
1071         switch (type) {
1072         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1073         case CONNMAN_SERVICE_TYPE_SYSTEM:
1074                 return;
1075         case CONNMAN_SERVICE_TYPE_ETHERNET:
1076         case CONNMAN_SERVICE_TYPE_WIFI:
1077         case CONNMAN_SERVICE_TYPE_WIMAX:
1078         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1079         case CONNMAN_SERVICE_TYPE_CELLULAR:
1080         case CONNMAN_SERVICE_TYPE_GPS:
1081         case CONNMAN_SERVICE_TYPE_VPN:
1082         case CONNMAN_SERVICE_TYPE_GADGET:
1083                 break;
1084         }
1085
1086         connman_info("Adding interface %s [ %s ]", name,
1087                                 __connman_service_type2string(type));
1088
1089         technology = technology_find(type);
1090
1091         if (technology == NULL || technology->driver == NULL
1092                         || technology->driver->add_interface == NULL)
1093                 return;
1094
1095         technology->driver->add_interface(technology,
1096                                         index, name, ident);
1097 }
1098
1099 void __connman_technology_remove_interface(enum connman_service_type type,
1100                                 int index, const char *name, const char *ident)
1101 {
1102         struct connman_technology *technology;
1103
1104         switch (type) {
1105         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1106         case CONNMAN_SERVICE_TYPE_SYSTEM:
1107                 return;
1108         case CONNMAN_SERVICE_TYPE_ETHERNET:
1109         case CONNMAN_SERVICE_TYPE_WIFI:
1110         case CONNMAN_SERVICE_TYPE_WIMAX:
1111         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1112         case CONNMAN_SERVICE_TYPE_CELLULAR:
1113         case CONNMAN_SERVICE_TYPE_GPS:
1114         case CONNMAN_SERVICE_TYPE_VPN:
1115         case CONNMAN_SERVICE_TYPE_GADGET:
1116                 break;
1117         }
1118
1119         connman_info("Remove interface %s [ %s ]", name,
1120                                 __connman_service_type2string(type));
1121
1122         technology = technology_find(type);
1123
1124         if (technology == NULL || technology->driver == NULL)
1125                 return;
1126
1127         if (technology->driver->remove_interface)
1128                 technology->driver->remove_interface(technology, index);
1129 }
1130
1131 int __connman_technology_add_device(struct connman_device *device)
1132 {
1133         struct connman_technology *technology;
1134         enum connman_service_type type;
1135
1136         DBG("device %p", device);
1137
1138         type = __connman_device_get_service_type(device);
1139
1140         technology = technology_get(type);
1141         if (technology == NULL) {
1142                 /*
1143                  * Since no driver can be found for this device at the moment we
1144                  * add it to the techless device list.
1145                 */
1146                 techless_device_list = g_slist_prepend(techless_device_list,
1147                                                                 device);
1148
1149                 return -ENXIO;
1150         }
1151
1152         if (technology->enable_persistent &&
1153                                         global_offlinemode == FALSE &&
1154                                         technology->hardblocked == FALSE) {
1155                 int err = __connman_device_enable(device);
1156                 /*
1157                  * connman_technology_add_device() calls __connman_device_enable()
1158                  * but since the device is already enabled, the calls does not
1159                  * propagate through to connman_technology_enabled via
1160                  * connman_device_set_powered.
1161                  */
1162                 if (err == -EALREADY)
1163                         __connman_technology_enabled(type);
1164         }
1165         /* if technology persistent state is offline or hardblocked */
1166         if (technology->enable_persistent == FALSE ||
1167                                         technology->hardblocked == TRUE)
1168                 __connman_device_disable(device);
1169
1170         technology->device_list = g_slist_prepend(technology->device_list,
1171                                                                 device);
1172
1173         return 0;
1174 }
1175
1176 int __connman_technology_remove_device(struct connman_device *device)
1177 {
1178         struct connman_technology *technology;
1179         enum connman_service_type type;
1180
1181         DBG("device %p", device);
1182
1183         type = __connman_device_get_service_type(device);
1184
1185         technology = technology_find(type);
1186         if (technology == NULL) {
1187                 techless_device_list = g_slist_remove(techless_device_list,
1188                                                                 device);
1189                 return -ENXIO;
1190         }
1191
1192         technology->device_list = g_slist_remove(technology->device_list,
1193                                                                 device);
1194         technology_put(technology);
1195
1196         return 0;
1197 }
1198
1199 static void powered_changed(struct connman_technology *technology)
1200 {
1201         connman_bool_t powered;
1202
1203         __sync_synchronize();
1204         if (technology->enabled >0)
1205                 powered = TRUE;
1206         else
1207                 powered = FALSE;
1208
1209         connman_dbus_property_changed_basic(technology->path,
1210                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1211                         DBUS_TYPE_BOOLEAN, &powered);
1212 }
1213
1214 int __connman_technology_enabled(enum connman_service_type type)
1215 {
1216         struct connman_technology *technology;
1217
1218         technology = technology_find(type);
1219         if (technology == NULL)
1220                 return -ENXIO;
1221
1222         if (__sync_fetch_and_add(&technology->enabled, 1) != 0)
1223                 return -EALREADY;
1224
1225         powered_changed(technology);
1226
1227         if (technology->pending_reply != NULL) {
1228                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1229                 dbus_message_unref(technology->pending_reply);
1230                 g_source_remove(technology->pending_timeout);
1231                 technology->pending_reply = NULL;
1232                 technology->pending_timeout = 0;
1233         }
1234
1235         return 0;
1236 }
1237
1238 int __connman_technology_disabled(enum connman_service_type type)
1239 {
1240         struct connman_technology *technology;
1241
1242         technology = technology_find(type);
1243         if (technology == NULL)
1244                 return -ENXIO;
1245
1246         if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
1247                 return -EINPROGRESS;
1248
1249         if (technology->pending_reply != NULL) {
1250                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1251                 dbus_message_unref(technology->pending_reply);
1252                 g_source_remove(technology->pending_timeout);
1253                 technology->pending_reply = NULL;
1254                 technology->pending_timeout = 0;
1255         }
1256
1257         powered_changed(technology);
1258
1259         return 0;
1260 }
1261
1262 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1263 {
1264         GSList *list;
1265         int err = -EINVAL;
1266
1267         if (global_offlinemode == offlinemode)
1268                 return 0;
1269
1270         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1271
1272         /*
1273          * This is a bit tricky. When you set offlinemode, there is no
1274          * way to differentiate between attempting offline mode and
1275          * resuming offlinemode from last saved profile. We need that
1276          * information in rfkill_update, otherwise it falls back on the
1277          * technology's persistent state. Hence we set the offline mode here
1278          * but save it & call the notifier only if its successful.
1279          */
1280
1281         global_offlinemode = offlinemode;
1282
1283         /* Traverse technology list, enable/disable each technology. */
1284         for (list = technology_list; list; list = list->next) {
1285                 struct connman_technology *technology = list->data;
1286
1287                 if (offlinemode)
1288                         err = technology_disable(technology, FALSE);
1289
1290                 if (!offlinemode && technology->enable_persistent)
1291                         err = technology_enable(technology, FALSE);
1292         }
1293
1294         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1295                 connman_technology_save_offlinemode();
1296                 __connman_notifier_offlinemode(offlinemode);
1297         } else
1298                 global_offlinemode = connman_technology_load_offlinemode();
1299
1300         return err;
1301 }
1302
1303 void __connman_technology_set_connected(enum connman_service_type type,
1304                 connman_bool_t connected)
1305 {
1306         struct connman_technology *technology;
1307
1308         technology = technology_find(type);
1309         if (technology == NULL)
1310                 return;
1311
1312         DBG("technology %p connected %d", technology, connected);
1313
1314         technology->connected = connected;
1315
1316         connman_dbus_property_changed_basic(technology->path,
1317                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1318                         DBUS_TYPE_BOOLEAN, &connected);
1319 }
1320
1321 static void technology_apply_hardblock_change(struct connman_technology *technology,
1322                                                 connman_bool_t hardblock)
1323 {
1324         gboolean apply = TRUE;
1325         GList *start, *list;
1326
1327         if (technology->hardblocked == hardblock)
1328                 return;
1329
1330         start = g_hash_table_get_values(rfkill_list);
1331         for (list = start; list != NULL; list = list->next) {
1332                 struct connman_rfkill *rfkill = list->data;
1333
1334                 if (rfkill->type != technology->type)
1335                         continue;
1336
1337                 if (rfkill->hardblock != hardblock)
1338                         apply = FALSE;
1339         }
1340
1341         g_list_free(start);
1342
1343         if (apply == FALSE)
1344                 return;
1345
1346         technology->hardblocked = hardblock;
1347
1348         if (hardblock == TRUE) {
1349                 DBG("%s is switched off.", get_name(technology->type));
1350                 technology_disable(technology, TRUE);
1351         } else
1352                 technology_enable(technology, TRUE);
1353
1354 }
1355
1356 int __connman_technology_add_rfkill(unsigned int index,
1357                                         enum connman_service_type type,
1358                                                 connman_bool_t softblock,
1359                                                 connman_bool_t hardblock)
1360 {
1361         struct connman_technology *technology;
1362         struct connman_rfkill *rfkill;
1363
1364         DBG("index %u type %d soft %u hard %u", index, type,
1365                                                         softblock, hardblock);
1366
1367         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1368         if (rfkill != NULL)
1369                 goto done;
1370
1371         rfkill = g_try_new0(struct connman_rfkill, 1);
1372         if (rfkill == NULL)
1373                 return -ENOMEM;
1374
1375         rfkill->index = index;
1376         rfkill->type = type;
1377         rfkill->softblock = softblock;
1378         rfkill->hardblock = hardblock;
1379
1380         g_hash_table_insert(rfkill_list, GINT_TO_POINTER(index), rfkill);
1381
1382 done:
1383         technology = technology_get(type);
1384         /* If there is no driver for this type, ignore it. */
1385         if (technology == NULL)
1386                 return -ENXIO;
1387
1388         technology_apply_hardblock_change(technology, hardblock);
1389
1390         /*
1391          * If Offline mode is on, we softblock the device if it isnt already.
1392          * If Offline mode is off, we rely on the persistent state of tech.
1393          */
1394         if (global_offlinemode) {
1395                 if (!softblock)
1396                         return __connman_rfkill_block(type, TRUE);
1397         } else {
1398                 if (technology->enable_persistent && softblock)
1399                         return __connman_rfkill_block(type, FALSE);
1400                 /* if technology persistent state is offline */
1401                 if (!technology->enable_persistent && !softblock)
1402                         return __connman_rfkill_block(type, TRUE);
1403         }
1404
1405         return 0;
1406 }
1407
1408 int __connman_technology_update_rfkill(unsigned int index,
1409                                         enum connman_service_type type,
1410                                                 connman_bool_t softblock,
1411                                                 connman_bool_t hardblock)
1412 {
1413         struct connman_technology *technology;
1414         struct connman_rfkill *rfkill;
1415
1416         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1417
1418         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1419         if (rfkill == NULL)
1420                 return -ENXIO;
1421
1422         if (rfkill->softblock == softblock &&
1423                 rfkill->hardblock == hardblock)
1424                 return 0;
1425
1426         rfkill->softblock = softblock;
1427         rfkill->hardblock = hardblock;
1428
1429         technology = technology_find(type);
1430         /* If there is no driver for this type, ignore it. */
1431         if (technology == NULL)
1432                 return -ENXIO;
1433
1434         technology_apply_hardblock_change(technology, hardblock);
1435
1436         if (!global_offlinemode) {
1437                 if (technology->enable_persistent && softblock)
1438                         return __connman_rfkill_block(type, FALSE);
1439                 if (!technology->enable_persistent && !softblock)
1440                         return __connman_rfkill_block(type, TRUE);
1441         }
1442
1443         return 0;
1444 }
1445
1446 int __connman_technology_remove_rfkill(unsigned int index,
1447                                         enum connman_service_type type)
1448 {
1449         struct connman_technology *technology;
1450         struct connman_rfkill *rfkill;
1451
1452         DBG("index %u", index);
1453
1454         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1455         if (rfkill == NULL)
1456                 return -ENXIO;
1457
1458         g_hash_table_remove(rfkill_list, GINT_TO_POINTER(index));
1459
1460         technology = technology_find(type);
1461         if (technology == NULL)
1462                 return -ENXIO;
1463
1464         technology_put(technology);
1465
1466         return 0;
1467 }
1468
1469 int __connman_technology_init(void)
1470 {
1471         DBG("");
1472
1473         connection = connman_dbus_get_connection();
1474
1475         rfkill_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1476                                                         NULL, free_rfkill);
1477
1478         global_offlinemode = connman_technology_load_offlinemode();
1479
1480         /* This will create settings file if it is missing */
1481         connman_technology_save_offlinemode();
1482
1483         return 0;
1484 }
1485
1486 void __connman_technology_cleanup(void)
1487 {
1488         DBG("");
1489
1490         g_hash_table_destroy(rfkill_list);
1491
1492         dbus_connection_unref(connection);
1493 }