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