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                                         technology->hardblocked == TRUE)
 552                         continue;
 553
 554                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 555                                 NULL, &entry);
 556                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 557                                 &technology->path);
 558                 append_properties(&entry, technology);
 559                 dbus_message_iter_close_container(array, &entry);
 560         }
 561 }
 562
 563 static gboolean technology_pending_reply(gpointer user_data)
 564 {
 565         struct connman_technology *technology = user_data;
 566         DBusMessage *reply;
 567
 568         /* Power request timedout, send ETIMEDOUT. */
 569         if (technology->pending_reply != NULL) {
 570                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 571                 if (reply != NULL)
 572                         g_dbus_send_message(connection, reply);
 573
 574                 dbus_message_unref(technology->pending_reply);
 575                 technology->pending_reply = NULL;
 576                 technology->pending_timeout = 0;
 577         }
 578
 579         return FALSE;
 580 }
 581
 582 static int technology_affect_devices(struct connman_technology *technology,
 583                                                 connman_bool_t enable_device)
 584 {
 585         GSList *list;
 586         int err = 0;
 587
 588         for (list = technology->device_list; list; list = list->next) {
 589                 struct connman_device *device = list->data;
 590
 591                 if (enable_device == TRUE)
 592                         err = __connman_device_enable(device);
 593                 else
 594                         err = __connman_device_disable(device);
 595         }
 596
 597         return err;
 598 }
 599
 600 static int technology_enable(struct connman_technology *technology,
 601                                                 connman_bool_t hardblock)
 602 {
 603         DBG("technology %p enable", technology);
 604
 605         __sync_synchronize();
 606         if (technology->enabled > 0)
 607                 return -EALREADY;
 608
 609         if (technology->pending_reply != NULL)
 610                 return -EBUSY;
 611
 612         if (hardblock == TRUE && technology->enable_persistent == FALSE)
 613                 return 0;
 614
 615         __connman_rfkill_block(technology->type, FALSE);
 616
 617         return technology_affect_devices(technology, TRUE);
 618 }
 619
 620 static int technology_disable(struct connman_technology *technology,
 621                                                 connman_bool_t hardblock)
 622 {
 623         DBG("technology %p disable", technology);
 624
 625         __sync_synchronize();
 626         if (technology->enabled == 0)
 627                 return -EALREADY;
 628
 629         if (technology->pending_reply != NULL)
 630                 return -EBUSY;
 631
 632         if (technology->tethering == TRUE)
 633                 set_tethering(technology, FALSE);
 634
 635         if (hardblock == FALSE)
 636                 __connman_rfkill_block(technology->type, TRUE);
 637
 638         return technology_affect_devices(technology, FALSE);
 639 }
 640
 641 static DBusMessage *set_powered(struct connman_technology *technology,
 642                                 DBusMessage *msg, connman_bool_t powered)
 643 {
 644         DBusMessage *reply = NULL;
 645         int err = 0;
 646
 647         if (technology->hardblocked == TRUE) {
 648                 err = -EACCES;
 649                 goto make_reply;
 650         }
 651
 652         if (powered == TRUE)
 653                 err = technology_enable(technology, FALSE);
 654         else
 655                 err = technology_disable(technology, FALSE);
 656
 657         if (err != -EBUSY) {
 658                 technology->enable_persistent = powered;
 659                 technology_save(technology);
 660         }
 661
 662 make_reply:
 663         if (err == -EINPROGRESS) {
 664                 technology->pending_reply = dbus_message_ref(msg);
 665                 technology->pending_timeout = g_timeout_add_seconds(10,
 666                                         technology_pending_reply, technology);
 667         } else if (err == -EALREADY) {
 668                 if (powered == TRUE)
 669                         reply = __connman_error_already_enabled(msg);
 670                 else
 671                         reply = __connman_error_already_disabled(msg);
 672         } else if (err < 0)
 673                 reply = __connman_error_failed(msg, -err);
 674         else
 675                 reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 676
 677         return reply;
 678 }
 679
 680 static DBusMessage *set_property(DBusConnection *conn,
 681                                         DBusMessage *msg, void *data)
 682 {
 683         struct connman_technology *technology = data;
 684         DBusMessageIter iter, value;
 685         const char *name;
 686         int type;
 687
 688         DBG("conn %p", conn);
 689
 690         if (dbus_message_iter_init(msg, &iter) == FALSE)
 691                 return __connman_error_invalid_arguments(msg);
 692
 693         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 694                 return __connman_error_invalid_arguments(msg);
 695
 696         dbus_message_iter_get_basic(&iter, &name);
 697         dbus_message_iter_next(&iter);
 698
 699         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 700                 return __connman_error_invalid_arguments(msg);
 701
 702         dbus_message_iter_recurse(&iter, &value);
 703
 704         type = dbus_message_iter_get_arg_type(&value);
 705
 706         DBG("property %s", name);
 707
 708         if (g_str_equal(name, "Tethering") == TRUE) {
 709                 int err;
 710                 connman_bool_t tethering;
 711
 712                 if (type != DBUS_TYPE_BOOLEAN)
 713                         return __connman_error_invalid_arguments(msg);
 714
 715                 dbus_message_iter_get_basic(&value, &tethering);
 716
 717                 if (technology->tethering == tethering) {
 718                         if (tethering == FALSE)
 719                                 return __connman_error_already_disabled(msg);
 720                         else
 721                                 return __connman_error_already_enabled(msg);
 722                 }
 723
 724                 err = set_tethering(technology, tethering);
 725                 if (err < 0)
 726                         return __connman_error_failed(msg, -err);
 727
 728         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 729                 const char *str;
 730
 731                 dbus_message_iter_get_basic(&value, &str);
 732
 733                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 734                         return __connman_error_not_supported(msg);
 735
 736                 if (strlen(str) < 1 || strlen(str) > 32)
 737                         return __connman_error_invalid_arguments(msg);
 738
 739                 if (g_strcmp0(technology->tethering_ident, str) != 0) {
 740                         g_free(technology->tethering_ident);
 741                         technology->tethering_ident = g_strdup(str);
 742                         technology_save(technology);
 743
 744                         connman_dbus_property_changed_basic(technology->path,
 745                                                 CONNMAN_TECHNOLOGY_INTERFACE,
 746                                                 "TetheringIdentifier",
 747                                                 DBUS_TYPE_STRING,
 748                                                 &technology->tethering_ident);
 749                 }
 750         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 751                 const char *str;
 752
 753                 dbus_message_iter_get_basic(&value, &str);
 754
 755                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 756                         return __connman_error_not_supported(msg);
 757
 758                 if (strlen(str) < 8 || strlen(str) > 63)
 759                         return __connman_error_passphrase_required(msg);
 760
 761                 if (g_strcmp0(technology->tethering_passphrase, str) != 0) {
 762                         g_free(technology->tethering_passphrase);
 763                         technology->tethering_passphrase = g_strdup(str);
 764                         technology_save(technology);
 765
 766                         connman_dbus_property_changed_basic(technology->path,
 767                                         CONNMAN_TECHNOLOGY_INTERFACE,
 768                                         "TetheringPassphrase",
 769                                         DBUS_TYPE_STRING,
 770                                         &technology->tethering_passphrase);
 771                 }
 772         } else if (g_str_equal(name, "Powered") == TRUE) {
 773                 connman_bool_t enable;
 774
 775                 if (type != DBUS_TYPE_BOOLEAN)
 776                         return __connman_error_invalid_arguments(msg);
 777
 778                 dbus_message_iter_get_basic(&value, &enable);
 779
 780                 return set_powered(technology, msg, enable);
 781         } else
 782                 return __connman_error_invalid_property(msg);
 783
 784         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 785 }
 786
 787 static struct connman_technology *technology_find(enum connman_service_type type)
 788 {
 789         GSList *list;
 790
 791         DBG("type %d", type);
 792
 793         for (list = technology_list; list; list = list->next) {
 794                 struct connman_technology *technology = list->data;
 795
 796                 if (technology->type == type)
 797                         return technology;
 798         }
 799
 800         return NULL;
 801 }
 802
 803 static void reply_scan_pending(struct connman_technology *technology, int err)
 804 {
 805         DBusMessage *reply;
 806
 807         DBG("technology %p err %d", technology, err);
 808
 809         while (technology->scan_pending != NULL) {
 810                 DBusMessage *msg = technology->scan_pending->data;
 811
 812                 DBG("reply to %s", dbus_message_get_sender(msg));
 813
 814                 if (err == 0)
 815                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 816                 else
 817                         reply = __connman_error_failed(msg, -err);
 818                 g_dbus_send_message(connection, reply);
 819                 dbus_message_unref(msg);
 820
 821                 technology->scan_pending =
 822                         g_slist_delete_link(technology->scan_pending,
 823                                         technology->scan_pending);
 824         }
 825 }
 826
 827 void __connman_technology_scan_started(struct connman_device *device)
 828 {
 829         DBG("device %p", device);
 830 }
 831
 832 void __connman_technology_scan_stopped(struct connman_device *device)
 833 {
 834         int count = 0;
 835         struct connman_technology *technology;
 836         enum connman_service_type type;
 837         GSList *list;
 838
 839         type = __connman_device_get_service_type(device);
 840         technology = technology_find(type);
 841
 842         DBG("technology %p device %p", technology, device);
 843
 844         if (technology == NULL)
 845                 return;
 846
 847         for (list = technology->device_list; list != NULL; list = list->next) {
 848                 struct connman_device *other_device = list->data;
 849
 850                 if (device == other_device)
 851                         continue;
 852
 853                 if (__connman_device_get_service_type(other_device) != type)
 854                         continue;
 855
 856                 if (connman_device_get_scanning(other_device) == TRUE)
 857                         count += 1;
 858         }
 859
 860         if (count == 0)
 861                 reply_scan_pending(technology, 0);
 862 }
 863
 864 void __connman_technology_notify_regdom_by_device(struct connman_device *device,
 865                                                 int result, const char *alpha2)
 866 {
 867         struct connman_technology *technology;
 868         enum connman_service_type type;
 869
 870         type = __connman_device_get_service_type(device);
 871         technology = technology_find(type);
 872
 873         if (technology == NULL)
 874                 return;
 875
 876         if (result < 0) {
 877                 if (technology->driver != NULL &&
 878                                 technology->driver->set_regdom != NULL) {
 879                         technology->driver->set_regdom(technology, alpha2);
 880                         return;
 881                 }
 882
 883                 alpha2 = NULL;
 884         }
 885
 886         connman_technology_regdom_notify(technology, alpha2);
 887 }
 888
 889 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 890 {
 891         struct connman_technology *technology = data;
 892         int err;
 893
 894         DBG ("technology %p request from %s", technology,
 895                         dbus_message_get_sender(msg));
 896
 897         dbus_message_ref(msg);
 898         technology->scan_pending =
 899                 g_slist_prepend(technology->scan_pending, msg);
 900
 901         err = __connman_device_request_scan(technology->type);
 902         if (err < 0)
 903                 reply_scan_pending(technology, err);
 904
 905         return NULL;
 906 }
 907
 908 static const GDBusMethodTable technology_methods[] = {
 909         { GDBUS_DEPRECATED_METHOD("GetProperties",
 910                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 911                         get_properties) },
 912         { GDBUS_ASYNC_METHOD("SetProperty",
 913                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 914                         NULL, set_property) },
 915         { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
 916         { },
 917 };
 918
 919 static const GDBusSignalTable technology_signals[] = {
 920         { GDBUS_SIGNAL("PropertyChanged",
 921                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 922         { },
 923 };
 924
 925 static gboolean technology_dbus_register(struct connman_technology *technology)
 926 {
 927         if (technology->dbus_registered == TRUE ||
 928                                         technology->hardblocked == TRUE)
 929                 return TRUE;
 930
 931         if (g_dbus_register_interface(connection, technology->path,
 932                                 CONNMAN_TECHNOLOGY_INTERFACE,
 933                                 technology_methods, technology_signals,
 934                                 NULL, technology, NULL) == FALSE) {
 935                 connman_error("Failed to register %s", technology->path);
 936                 return FALSE;
 937         }
 938
 939         technology_added_signal(technology);
 940         technology->dbus_registered = TRUE;
 941
 942         return TRUE;
 943 }
 944
 945 static struct connman_technology *technology_get(enum connman_service_type type)
 946 {
 947         struct connman_technology *technology;
 948         struct connman_technology_driver *driver = NULL;
 949         const char *str;
 950         GSList *list;
 951         int err;
 952
 953         DBG("type %d", type);
 954
 955         str = __connman_service_type2string(type);
 956         if (str == NULL)
 957                 return NULL;
 958
 959         technology = technology_find(type);
 960         if (technology != NULL) {
 961                 __sync_fetch_and_add(&technology->refcount, 1);
 962                 return technology;
 963         }
 964
 965         /* First check if we have a driver for this technology type */
 966         for (list = driver_list; list; list = list->next) {
 967                 driver = list->data;
 968
 969                 if (driver->type == type)
 970                         break;
 971                 else
 972                         driver = NULL;
 973         }
 974
 975         if (driver == NULL) {
 976                 DBG("No matching driver found for %s.",
 977                                 __connman_service_type2string(type));
 978                 return NULL;
 979         }
 980
 981         technology = g_try_new0(struct connman_technology, 1);
 982         if (technology == NULL)
 983                 return NULL;
 984
 985         technology->refcount = 1;
 986
 987         if (type == CONNMAN_SERVICE_TYPE_ETHERNET)
 988                 technology->hardblocked = FALSE;
 989         else
 990                 technology->hardblocked = TRUE;
 991
 992         technology->type = type;
 993         technology->path = g_strdup_printf("%s/technology/%s",
 994                                                         CONNMAN_PATH, str);
 995
 996         technology->device_list = NULL;
 997
 998         technology->pending_reply = NULL;
 999
1000         technology_load(technology);
1001
1002         if (technology_dbus_register(technology) == FALSE) {
1003                 g_free(technology);
1004                 return NULL;
1005         }
1006
1007         technology_list = g_slist_prepend(technology_list, technology);
1008
1009         technology->driver = driver;
1010         err = driver->probe(technology);
1011         if (err != 0)
1012                 DBG("Driver probe failed for technology %p", technology);
1013
1014         DBG("technology %p", technology);
1015
1016         return technology;
1017 }
1018
1019 static void technology_dbus_unregister(struct connman_technology *technology)
1020 {
1021         if (technology->dbus_registered == FALSE)
1022                 return;
1023
1024         technology_removed_signal(technology);
1025         g_dbus_unregister_interface(connection, technology->path,
1026                 CONNMAN_TECHNOLOGY_INTERFACE);
1027
1028         technology->dbus_registered = FALSE;
1029 }
1030
1031 static void technology_put(struct connman_technology *technology)
1032 {
1033         DBG("technology %p", technology);
1034
1035         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
1036                 return;
1037
1038         reply_scan_pending(technology, -EINTR);
1039
1040         if (technology->driver) {
1041                 technology->driver->remove(technology);
1042                 technology->driver = NULL;
1043         }
1044
1045         technology_list = g_slist_remove(technology_list, technology);
1046
1047         technology_dbus_unregister(technology);
1048
1049         g_slist_free(technology->device_list);
1050
1051         g_free(technology->path);
1052         g_free(technology->regdom);
1053         g_free(technology->tethering_ident);
1054         g_free(technology->tethering_passphrase);
1055         g_free(technology);
1056 }
1057
1058 void __connman_technology_add_interface(enum connman_service_type type,
1059                                 int index, const char *name, const char *ident)
1060 {
1061         struct connman_technology *technology;
1062
1063         switch (type) {
1064         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1065         case CONNMAN_SERVICE_TYPE_SYSTEM:
1066                 return;
1067         case CONNMAN_SERVICE_TYPE_ETHERNET:
1068         case CONNMAN_SERVICE_TYPE_WIFI:
1069         case CONNMAN_SERVICE_TYPE_WIMAX:
1070         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1071         case CONNMAN_SERVICE_TYPE_CELLULAR:
1072         case CONNMAN_SERVICE_TYPE_GPS:
1073         case CONNMAN_SERVICE_TYPE_VPN:
1074         case CONNMAN_SERVICE_TYPE_GADGET:
1075                 break;
1076         }
1077
1078         connman_info("Adding interface %s [ %s ]", name,
1079                                 __connman_service_type2string(type));
1080
1081         technology = technology_find(type);
1082
1083         if (technology == NULL || technology->driver == NULL
1084                         || technology->driver->add_interface == NULL)
1085                 return;
1086
1087         technology->driver->add_interface(technology,
1088                                         index, name, ident);
1089 }
1090
1091 void __connman_technology_remove_interface(enum connman_service_type type,
1092                                 int index, const char *name, const char *ident)
1093 {
1094         struct connman_technology *technology;
1095
1096         switch (type) {
1097         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1098         case CONNMAN_SERVICE_TYPE_SYSTEM:
1099                 return;
1100         case CONNMAN_SERVICE_TYPE_ETHERNET:
1101         case CONNMAN_SERVICE_TYPE_WIFI:
1102         case CONNMAN_SERVICE_TYPE_WIMAX:
1103         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1104         case CONNMAN_SERVICE_TYPE_CELLULAR:
1105         case CONNMAN_SERVICE_TYPE_GPS:
1106         case CONNMAN_SERVICE_TYPE_VPN:
1107         case CONNMAN_SERVICE_TYPE_GADGET:
1108                 break;
1109         }
1110
1111         connman_info("Remove interface %s [ %s ]", name,
1112                                 __connman_service_type2string(type));
1113
1114         technology = technology_find(type);
1115
1116         if (technology == NULL || technology->driver == NULL)
1117                 return;
1118
1119         if (technology->driver->remove_interface)
1120                 technology->driver->remove_interface(technology, index);
1121 }
1122
1123 int __connman_technology_add_device(struct connman_device *device)
1124 {
1125         struct connman_technology *technology;
1126         enum connman_service_type type;
1127
1128         DBG("device %p", device);
1129
1130         type = __connman_device_get_service_type(device);
1131
1132         technology = technology_get(type);
1133         if (technology == NULL) {
1134                 /*
1135                  * Since no driver can be found for this device at the moment we
1136                  * add it to the techless device list.
1137                 */
1138                 techless_device_list = g_slist_prepend(techless_device_list,
1139                                                                 device);
1140
1141                 return -ENXIO;
1142         }
1143
1144         if (technology->enable_persistent &&
1145                                         global_offlinemode == FALSE &&
1146                                         technology->hardblocked == FALSE) {
1147                 int err = __connman_device_enable(device);
1148                 /*
1149                  * connman_technology_add_device() calls __connman_device_enable()
1150                  * but since the device is already enabled, the calls does not
1151                  * propagate through to connman_technology_enabled via
1152                  * connman_device_set_powered.
1153                  */
1154                 if (err == -EALREADY)
1155                         __connman_technology_enabled(type);
1156         }
1157         /* if technology persistent state is offline or hardblocked */
1158         if (technology->enable_persistent == FALSE ||
1159                                         technology->hardblocked == TRUE)
1160                 __connman_device_disable(device);
1161
1162         technology->device_list = g_slist_prepend(technology->device_list,
1163                                                                 device);
1164
1165         return 0;
1166 }
1167
1168 int __connman_technology_remove_device(struct connman_device *device)
1169 {
1170         struct connman_technology *technology;
1171         enum connman_service_type type;
1172
1173         DBG("device %p", device);
1174
1175         type = __connman_device_get_service_type(device);
1176
1177         technology = technology_find(type);
1178         if (technology == NULL) {
1179                 techless_device_list = g_slist_remove(techless_device_list,
1180                                                                 device);
1181                 return -ENXIO;
1182         }
1183
1184         technology->device_list = g_slist_remove(technology->device_list,
1185                                                                 device);
1186         technology_put(technology);
1187
1188         return 0;
1189 }
1190
1191 static void powered_changed(struct connman_technology *technology)
1192 {
1193         connman_bool_t powered;
1194
1195         __sync_synchronize();
1196         if (technology->enabled >0)
1197                 powered = TRUE;
1198         else
1199                 powered = FALSE;
1200
1201         connman_dbus_property_changed_basic(technology->path,
1202                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1203                         DBUS_TYPE_BOOLEAN, &powered);
1204 }
1205
1206 int __connman_technology_enabled(enum connman_service_type type)
1207 {
1208         struct connman_technology *technology;
1209
1210         technology = technology_find(type);
1211         if (technology == NULL)
1212                 return -ENXIO;
1213
1214         if (__sync_fetch_and_add(&technology->enabled, 1) != 0)
1215                 return -EALREADY;
1216
1217         powered_changed(technology);
1218
1219         if (technology->pending_reply != NULL) {
1220                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1221                 dbus_message_unref(technology->pending_reply);
1222                 g_source_remove(technology->pending_timeout);
1223                 technology->pending_reply = NULL;
1224                 technology->pending_timeout = 0;
1225         }
1226
1227         return 0;
1228 }
1229
1230 int __connman_technology_disabled(enum connman_service_type type)
1231 {
1232         struct connman_technology *technology;
1233
1234         technology = technology_find(type);
1235         if (technology == NULL)
1236                 return -ENXIO;
1237
1238         if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
1239                 return -EINPROGRESS;
1240
1241         if (technology->pending_reply != NULL) {
1242                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1243                 dbus_message_unref(technology->pending_reply);
1244                 g_source_remove(technology->pending_timeout);
1245                 technology->pending_reply = NULL;
1246                 technology->pending_timeout = 0;
1247         }
1248
1249         powered_changed(technology);
1250
1251         return 0;
1252 }
1253
1254 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1255 {
1256         GSList *list;
1257         int err = -EINVAL;
1258
1259         if (global_offlinemode == offlinemode)
1260                 return 0;
1261
1262         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1263
1264         /*
1265          * This is a bit tricky. When you set offlinemode, there is no
1266          * way to differentiate between attempting offline mode and
1267          * resuming offlinemode from last saved profile. We need that
1268          * information in rfkill_update, otherwise it falls back on the
1269          * technology's persistent state. Hence we set the offline mode here
1270          * but save it & call the notifier only if its successful.
1271          */
1272
1273         global_offlinemode = offlinemode;
1274
1275         /* Traverse technology list, enable/disable each technology. */
1276         for (list = technology_list; list; list = list->next) {
1277                 struct connman_technology *technology = list->data;
1278
1279                 if (offlinemode)
1280                         err = technology_disable(technology, FALSE);
1281
1282                 if (!offlinemode && technology->enable_persistent)
1283                         err = technology_enable(technology, FALSE);
1284         }
1285
1286         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1287                 connman_technology_save_offlinemode();
1288                 __connman_notifier_offlinemode(offlinemode);
1289         } else
1290                 global_offlinemode = connman_technology_load_offlinemode();
1291
1292         return err;
1293 }
1294
1295 void __connman_technology_set_connected(enum connman_service_type type,
1296                 connman_bool_t connected)
1297 {
1298         struct connman_technology *technology;
1299
1300         technology = technology_find(type);
1301         if (technology == NULL)
1302                 return;
1303
1304         DBG("technology %p connected %d", technology, connected);
1305
1306         technology->connected = connected;
1307
1308         connman_dbus_property_changed_basic(technology->path,
1309                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1310                         DBUS_TYPE_BOOLEAN, &connected);
1311 }
1312
1313 static void technology_apply_hardblock_change(struct connman_technology *technology,
1314                                                 connman_bool_t hardblock)
1315 {
1316         gboolean apply = TRUE;
1317         GList *start, *list;
1318
1319         if (technology->hardblocked == hardblock)
1320                 return;
1321
1322         start = g_hash_table_get_values(rfkill_list);
1323         for (list = start; list != NULL; list = list->next) {
1324                 struct connman_rfkill *rfkill = list->data;
1325
1326                 if (rfkill->type != technology->type)
1327                         continue;
1328
1329                 if (rfkill->hardblock != hardblock)
1330                         apply = FALSE;
1331         }
1332
1333         g_list_free(start);
1334
1335         if (apply == FALSE)
1336                 return;
1337
1338         technology->hardblocked = hardblock;
1339
1340         if (hardblock == TRUE) {
1341                 DBG("%s is switched off.", get_name(technology->type));
1342                 technology_disable(technology, TRUE);
1343                 technology_dbus_unregister(technology);
1344         } else {
1345                 technology_enable(technology, TRUE);
1346                 technology_dbus_register(technology);
1347         }
1348 }
1349
1350 int __connman_technology_add_rfkill(unsigned int index,
1351                                         enum connman_service_type type,
1352                                                 connman_bool_t softblock,
1353                                                 connman_bool_t hardblock)
1354 {
1355         struct connman_technology *technology;
1356         struct connman_rfkill *rfkill;
1357
1358         DBG("index %u type %d soft %u hard %u", index, type,
1359                                                         softblock, hardblock);
1360
1361         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1362         if (rfkill != NULL)
1363                 goto done;
1364
1365         rfkill = g_try_new0(struct connman_rfkill, 1);
1366         if (rfkill == NULL)
1367                 return -ENOMEM;
1368
1369         rfkill->index = index;
1370         rfkill->type = type;
1371         rfkill->softblock = softblock;
1372         rfkill->hardblock = hardblock;
1373
1374         g_hash_table_insert(rfkill_list, GINT_TO_POINTER(index), rfkill);
1375
1376 done:
1377         technology = technology_get(type);
1378         /* If there is no driver for this type, ignore it. */
1379         if (technology == NULL)
1380                 return -ENXIO;
1381
1382         technology_apply_hardblock_change(technology, hardblock);
1383
1384         /*
1385          * If Offline mode is on, we softblock the device if it isnt already.
1386          * If Offline mode is off, we rely on the persistent state of tech.
1387          */
1388         if (global_offlinemode) {
1389                 if (!softblock)
1390                         return __connman_rfkill_block(type, TRUE);
1391         } else {
1392                 if (technology->enable_persistent && softblock)
1393                         return __connman_rfkill_block(type, FALSE);
1394                 /* if technology persistent state is offline */
1395                 if (!technology->enable_persistent && !softblock)
1396                         return __connman_rfkill_block(type, TRUE);
1397         }
1398
1399         return 0;
1400 }
1401
1402 int __connman_technology_update_rfkill(unsigned int index,
1403                                         enum connman_service_type type,
1404                                                 connman_bool_t softblock,
1405                                                 connman_bool_t hardblock)
1406 {
1407         struct connman_technology *technology;
1408         struct connman_rfkill *rfkill;
1409
1410         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1411
1412         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1413         if (rfkill == NULL)
1414                 return -ENXIO;
1415
1416         if (rfkill->softblock == softblock &&
1417                 rfkill->hardblock == hardblock)
1418                 return 0;
1419
1420         rfkill->softblock = softblock;
1421         rfkill->hardblock = hardblock;
1422
1423         technology = technology_find(type);
1424         /* If there is no driver for this type, ignore it. */
1425         if (technology == NULL)
1426                 return -ENXIO;
1427
1428         technology_apply_hardblock_change(technology, hardblock);
1429
1430         if (!global_offlinemode) {
1431                 if (technology->enable_persistent && softblock)
1432                         return __connman_rfkill_block(type, FALSE);
1433                 if (!technology->enable_persistent && !softblock)
1434                         return __connman_rfkill_block(type, TRUE);
1435         }
1436
1437         return 0;
1438 }
1439
1440 int __connman_technology_remove_rfkill(unsigned int index,
1441                                         enum connman_service_type type)
1442 {
1443         struct connman_technology *technology;
1444         struct connman_rfkill *rfkill;
1445
1446         DBG("index %u", index);
1447
1448         rfkill = g_hash_table_lookup(rfkill_list, GINT_TO_POINTER(index));
1449         if (rfkill == NULL)
1450                 return -ENXIO;
1451
1452         g_hash_table_remove(rfkill_list, GINT_TO_POINTER(index));
1453
1454         technology = technology_find(type);
1455         if (technology == NULL)
1456                 return -ENXIO;
1457
1458         technology_put(technology);
1459
1460         return 0;
1461 }
1462
1463 int __connman_technology_init(void)
1464 {
1465         DBG("");
1466
1467         connection = connman_dbus_get_connection();
1468
1469         rfkill_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1470                                                         NULL, free_rfkill);
1471
1472         global_offlinemode = connman_technology_load_offlinemode();
1473
1474         /* This will create settings file if it is missing */
1475         connman_technology_save_offlinemode();
1476
1477         return 0;
1478 }
1479
1480 void __connman_technology_cleanup(void)
1481 {
1482         DBG("");
1483
1484         g_hash_table_destroy(rfkill_list);
1485
1486         dbus_connection_unref(connection);
1487 }