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