src/technology.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <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 static connman_bool_t global_offlinemode;
  38
  39 struct connman_rfkill {
  40         unsigned int index;
  41         enum connman_service_type type;
  42         connman_bool_t softblock;
  43         connman_bool_t hardblock;
  44 };
  45
  46 enum connman_technology_state {
  47         CONNMAN_TECHNOLOGY_STATE_UNKNOWN   = 0,
  48         CONNMAN_TECHNOLOGY_STATE_OFFLINE   = 1,
  49         CONNMAN_TECHNOLOGY_STATE_ENABLED   = 2,
  50         CONNMAN_TECHNOLOGY_STATE_CONNECTED = 3,
  51 };
  52
  53 struct connman_technology {
  54         int refcount;
  55         enum connman_service_type type;
  56         enum connman_technology_state state;
  57         char *path;
  58         GHashTable *rfkill_list;
  59         GSList *device_list;
  60         int enabled;
  61         char *regdom;
  62
  63         connman_bool_t tethering;
  64         char *tethering_ident;
  65         char *tethering_passphrase;
  66
  67         connman_bool_t enable_persistent; /* Save the tech state */
  68
  69         struct connman_technology_driver *driver;
  70         void *driver_data;
  71
  72         DBusMessage *pending_reply;
  73         guint pending_timeout;
  74 };
  75
  76 static GSList *driver_list = NULL;
  77
  78 static gint compare_priority(gconstpointer a, gconstpointer b)
  79 {
  80         const struct connman_technology_driver *driver1 = a;
  81         const struct connman_technology_driver *driver2 = b;
  82
  83         return driver2->priority - driver1->priority;
  84 }
  85
  86 /**
  87  * connman_technology_driver_register:
  88  * @driver: Technology driver definition
  89  *
  90  * Register a new technology driver
  91  *
  92  * Returns: %0 on success
  93  */
  94 int connman_technology_driver_register(struct connman_technology_driver *driver)
  95 {
  96         DBG("Registering %s driver", driver->name);
  97
  98         driver_list = g_slist_insert_sorted(driver_list, driver,
  99                                                         compare_priority);
 100
 101         return 0;
 102 }
 103
 104 /**
 105  * connman_technology_driver_unregister:
 106  * @driver: Technology driver definition
 107  *
 108  * Remove a previously registered technology driver
 109  */
 110 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 111 {
 112         GSList *list;
 113         struct connman_technology *technology;
 114
 115         DBG("Unregistering driver %p name %s", driver, driver->name);
 116
 117         for (list = technology_list; list; list = list->next) {
 118                 technology = list->data;
 119
 120                 if (technology->driver == NULL)
 121                         continue;
 122
 123                 if (technology->type == driver->type) {
 124                         technology->driver->remove(technology);
 125                         technology->driver = NULL;
 126                 }
 127         }
 128
 129         driver_list = g_slist_remove(driver_list, driver);
 130 }
 131
 132 static void tethering_changed(struct connman_technology *technology)
 133 {
 134         connman_bool_t tethering = technology->tethering;
 135
 136         connman_dbus_property_changed_basic(technology->path,
 137                                 CONNMAN_TECHNOLOGY_INTERFACE, "Tethering",
 138                                                 DBUS_TYPE_BOOLEAN, &tethering);
 139 }
 140
 141 void connman_technology_tethering_notify(struct connman_technology *technology,
 142                                                         connman_bool_t enabled)
 143 {
 144         GSList *list;
 145
 146         DBG("technology %p enabled %u", technology, enabled);
 147
 148         if (technology->tethering == enabled)
 149                 return;
 150
 151         technology->tethering = enabled;
 152
 153         tethering_changed(technology);
 154
 155         if (enabled == TRUE)
 156                 __connman_tethering_set_enabled();
 157         else {
 158                 for (list = technology_list; list; list = list->next) {
 159                         struct connman_technology *other_tech = list->data;
 160                         if (other_tech->tethering == TRUE)
 161                                 break;
 162                 }
 163                 if (list == NULL)
 164                         __connman_tethering_set_disabled();
 165         }
 166 }
 167
 168 static int set_tethering(struct connman_technology *technology,
 169                                 connman_bool_t enabled)
 170 {
 171         const char *ident, *passphrase, *bridge;
 172
 173         ident = technology->tethering_ident;
 174         passphrase = technology->tethering_passphrase;
 175
 176         if (technology->driver == NULL ||
 177                         technology->driver->set_tethering == NULL)
 178                 return -EOPNOTSUPP;
 179
 180         bridge = __connman_tethering_get_bridge();
 181         if (bridge == NULL)
 182                 return -EOPNOTSUPP;
 183
 184         if (technology->type == CONNMAN_SERVICE_TYPE_WIFI &&
 185             (ident == NULL || passphrase == NULL))
 186                 return -EINVAL;
 187
 188         return technology->driver->set_tethering(technology, ident, passphrase,
 189                                                         bridge, enabled);
 190 }
 191
 192 void connman_technology_regdom_notify(struct connman_technology *technology,
 193                                                         const char *alpha2)
 194 {
 195         DBG("");
 196
 197         if (alpha2 == NULL)
 198                 connman_error("Failed to set regulatory domain");
 199         else
 200                 DBG("Regulatory domain set to %s", alpha2);
 201
 202         g_free(technology->regdom);
 203         technology->regdom = g_strdup(alpha2);
 204 }
 205
 206 int connman_technology_set_regdom(const char *alpha2)
 207 {
 208         GSList *list;
 209
 210         for (list = technology_list; list; list = list->next) {
 211                 struct connman_technology *technology = list->data;
 212
 213                 if (technology->driver == NULL)
 214                         continue;
 215
 216                 if (technology->driver->set_regdom)
 217                         technology->driver->set_regdom(technology, alpha2);
 218         }
 219
 220         return 0;
 221 }
 222
 223 static void free_rfkill(gpointer data)
 224 {
 225         struct connman_rfkill *rfkill = data;
 226
 227         g_free(rfkill);
 228 }
 229
 230 static const char *state2string(enum connman_technology_state state)
 231 {
 232         switch (state) {
 233         case CONNMAN_TECHNOLOGY_STATE_UNKNOWN:
 234                 break;
 235         case CONNMAN_TECHNOLOGY_STATE_OFFLINE:
 236                 return "offline";
 237         case CONNMAN_TECHNOLOGY_STATE_ENABLED:
 238                 return "enabled";
 239         case CONNMAN_TECHNOLOGY_STATE_CONNECTED:
 240                 return "connected";
 241         }
 242
 243         return NULL;
 244 }
 245
 246 static void state_changed(struct connman_technology *technology)
 247 {
 248         const char *str;
 249
 250         str = state2string(technology->state);
 251         if (str == NULL)
 252                 return;
 253
 254         connman_dbus_property_changed_basic(technology->path,
 255                                 CONNMAN_TECHNOLOGY_INTERFACE, "State",
 256                                                 DBUS_TYPE_STRING, &str);
 257 }
 258
 259 static const char *get_name(enum connman_service_type type)
 260 {
 261         switch (type) {
 262         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 263         case CONNMAN_SERVICE_TYPE_SYSTEM:
 264         case CONNMAN_SERVICE_TYPE_GPS:
 265         case CONNMAN_SERVICE_TYPE_VPN:
 266         case CONNMAN_SERVICE_TYPE_GADGET:
 267                 break;
 268         case CONNMAN_SERVICE_TYPE_ETHERNET:
 269                 return "Wired";
 270         case CONNMAN_SERVICE_TYPE_WIFI:
 271                 return "WiFi";
 272         case CONNMAN_SERVICE_TYPE_WIMAX:
 273                 return "WiMAX";
 274         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 275                 return "Bluetooth";
 276         case CONNMAN_SERVICE_TYPE_CELLULAR:
 277                 return "Cellular";
 278         }
 279
 280         return NULL;
 281 }
 282
 283 static void load_state(struct connman_technology *technology)
 284 {
 285         GKeyFile *keyfile;
 286         gchar *identifier;
 287         GError *error = NULL;
 288         connman_bool_t enable;
 289
 290         DBG("technology %p", technology);
 291
 292         keyfile = __connman_storage_load_global();
 293         /* Fallback on disabling technology if file not found. */
 294         if (keyfile == NULL) {
 295                 technology->enable_persistent = FALSE;
 296                 return;
 297         }
 298
 299         identifier = g_strdup_printf("%s", get_name(technology->type));
 300         if (identifier == NULL)
 301                 goto done;
 302
 303         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 304         if (error == NULL)
 305                 technology->enable_persistent = enable;
 306         else {
 307                 technology->enable_persistent = FALSE;
 308                 g_clear_error(&error);
 309         }
 310 done:
 311         g_free(identifier);
 312
 313         g_key_file_free(keyfile);
 314
 315         return;
 316 }
 317
 318 static void save_state(struct connman_technology *technology)
 319 {
 320         GKeyFile *keyfile;
 321         gchar *identifier;
 322
 323         DBG("technology %p", technology);
 324
 325         keyfile = __connman_storage_load_global();
 326         if (keyfile == NULL)
 327                 keyfile = g_key_file_new();
 328
 329         identifier = g_strdup_printf("%s", get_name(technology->type));
 330         if (identifier == NULL)
 331                 goto done;
 332
 333         g_key_file_set_boolean(keyfile, identifier, "Enable",
 334                                 technology->enable_persistent);
 335
 336 done:
 337         g_free(identifier);
 338
 339         __connman_storage_save_global(keyfile);
 340
 341         g_key_file_free(keyfile);
 342
 343         return;
 344 }
 345
 346 connman_bool_t __connman_technology_get_offlinemode(void)
 347 {
 348         return global_offlinemode;
 349 }
 350
 351 static void connman_technology_save_offlinemode()
 352 {
 353         GKeyFile *keyfile;
 354
 355         keyfile = __connman_storage_load_global();
 356         if (keyfile == NULL)
 357                 keyfile = g_key_file_new();
 358
 359         g_key_file_set_boolean(keyfile, "global",
 360                                         "OfflineMode", global_offlinemode);
 361
 362         __connman_storage_save_global(keyfile);
 363
 364         g_key_file_free(keyfile);
 365
 366         return;
 367 }
 368
 369 static connman_bool_t connman_technology_load_offlinemode()
 370 {
 371         GKeyFile *keyfile;
 372         GError *error = NULL;
 373         connman_bool_t offlinemode;
 374
 375         /* If there is a error, we enable offlinemode */
 376         keyfile = __connman_storage_load_global();
 377         if (keyfile == NULL)
 378                 return TRUE;
 379
 380         offlinemode = g_key_file_get_boolean(keyfile, "global",
 381                                                 "OfflineMode", &error);
 382         if (error != NULL) {
 383                 offlinemode = TRUE;
 384                 g_clear_error(&error);
 385         }
 386
 387         g_key_file_free(keyfile);
 388
 389         return offlinemode;
 390 }
 391
 392 static void append_properties(DBusMessageIter *iter,
 393                 struct connman_technology *technology)
 394 {
 395         DBusMessageIter dict;
 396         const char *str;
 397         connman_bool_t powered;
 398
 399         connman_dbus_dict_open(iter, &dict);
 400
 401         str = state2string(technology->state);
 402         if (str != NULL)
 403                 connman_dbus_dict_append_basic(&dict, "State",
 404                                                 DBUS_TYPE_STRING, &str);
 405
 406         str = get_name(technology->type);
 407         if (str != NULL)
 408                 connman_dbus_dict_append_basic(&dict, "Name",
 409                                                 DBUS_TYPE_STRING, &str);
 410
 411         str = __connman_service_type2string(technology->type);
 412         if (str != NULL)
 413                 connman_dbus_dict_append_basic(&dict, "Type",
 414                                                 DBUS_TYPE_STRING, &str);
 415
 416         __sync_synchronize();
 417         if (technology->enabled > 0)
 418                 powered = TRUE;
 419         else
 420                 powered = FALSE;
 421         connman_dbus_dict_append_basic(&dict, "Powered",
 422                                         DBUS_TYPE_BOOLEAN, &powered);
 423
 424         connman_dbus_dict_append_basic(&dict, "Tethering",
 425                                         DBUS_TYPE_BOOLEAN,
 426                                         &technology->tethering);
 427
 428         if (technology->tethering_ident != NULL)
 429                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 430                                                 DBUS_TYPE_STRING,
 431                                                 &technology->tethering_ident);
 432
 433         if (technology->tethering_passphrase != NULL)
 434                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 435                                                 DBUS_TYPE_STRING,
 436                                                 &technology->tethering_passphrase);
 437
 438         connman_dbus_dict_close(iter, &dict);
 439 }
 440
 441 static void technology_added_signal(struct connman_technology *technology)
 442 {
 443         DBusMessage *signal;
 444         DBusMessageIter iter;
 445
 446         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 447                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 448         if (signal == NULL)
 449                 return;
 450
 451         dbus_message_iter_init_append(signal, &iter);
 452         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 453                                                         &technology->path);
 454         append_properties(&iter, technology);
 455
 456         dbus_connection_send(connection, signal, NULL);
 457         dbus_message_unref(signal);
 458 }
 459
 460 static void technology_removed_signal(struct connman_technology *technology)
 461 {
 462         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 463                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 464                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 465                         DBUS_TYPE_INVALID);
 466 }
 467
 468 static DBusMessage *get_properties(DBusConnection *conn,
 469                                         DBusMessage *message, void *user_data)
 470 {
 471         struct connman_technology *technology = user_data;
 472         DBusMessage *reply;
 473         DBusMessageIter iter;
 474
 475         reply = dbus_message_new_method_return(message);
 476         if (reply == NULL)
 477                 return NULL;
 478
 479         dbus_message_iter_init_append(reply, &iter);
 480         append_properties(&iter, technology);
 481
 482         return reply;
 483 }
 484
 485 void __connman_technology_list_struct(DBusMessageIter *array)
 486 {
 487         GSList *list;
 488         DBusMessageIter entry;
 489
 490         for (list = technology_list; list; list = list->next) {
 491                 struct connman_technology *technology = list->data;
 492
 493                 if (technology->path == NULL)
 494                         continue;
 495
 496                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 497                                 NULL, &entry);
 498                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 499                                 &technology->path);
 500                 append_properties(&entry, technology);
 501                 dbus_message_iter_close_container(array, &entry);
 502         }
 503 }
 504
 505 static gboolean technology_pending_reply(gpointer user_data)
 506 {
 507         struct connman_technology *technology = user_data;
 508         DBusMessage *reply;
 509
 510         /* Power request timedout, send ETIMEDOUT. */
 511         if (technology->pending_reply != NULL) {
 512                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 513                 if (reply != NULL)
 514                         g_dbus_send_message(connection, reply);
 515
 516                 dbus_message_unref(technology->pending_reply);
 517                 technology->pending_reply = NULL;
 518                 technology->pending_timeout = 0;
 519         }
 520
 521         return FALSE;
 522 }
 523
 524 static int technology_enable(struct connman_technology *technology,
 525                 DBusMessage *msg)
 526 {
 527         GSList *list;
 528         int err = 0;
 529         int ret = -ENODEV;
 530         DBusMessage *reply;
 531
 532         DBG("technology %p enable", technology);
 533
 534         __sync_synchronize();
 535         if (technology->enabled > 0) {
 536                 err = -EALREADY;
 537                 goto done;
 538         }
 539
 540         if (technology->pending_reply != NULL) {
 541                 err = -EBUSY;
 542                 goto done;
 543         }
 544
 545         if (msg != NULL) {
 546                 /*
 547                  * This is a bit of a trick. When msg is not NULL it means
 548                  * thats technology_enable was invoked from the manager API.
 549                  * Hence we save the state here.
 550                  */
 551                 technology->enable_persistent = TRUE;
 552                 save_state(technology);
 553         }
 554
 555         __connman_rfkill_block(technology->type, FALSE);
 556
 557         /*
 558          * An empty device list means that devices in the technology
 559          * were rfkill blocked. The unblock above will enable the devs.
 560          */
 561         if (technology->device_list == NULL) {
 562                 ret = 0;
 563                 goto done;
 564         }
 565
 566         for (list = technology->device_list; list; list = list->next) {
 567                 struct connman_device *device = list->data;
 568
 569                 err = __connman_device_enable(device);
 570                 /*
 571                  * err = 0 : Device was enabled right away.
 572                  * If atleast one device gets enabled, we consider
 573                  * the technology to be enabled.
 574                  */
 575                 if (err == 0)
 576                         ret = 0;
 577         }
 578
 579 done:
 580         if (ret == 0) {
 581                 if (msg != NULL)
 582                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 583                 return ret;
 584         }
 585
 586         if (msg != NULL) {
 587                 if (err == -EINPROGRESS) {
 588                         technology->pending_reply = dbus_message_ref(msg);
 589                         technology->pending_timeout = g_timeout_add_seconds(10,
 590                                         technology_pending_reply, technology);
 591                 } else {
 592                         reply = __connman_error_failed(msg, -err);
 593                         if (reply != NULL)
 594                                 g_dbus_send_message(connection, reply);
 595                 }
 596         }
 597
 598         return err;
 599 }
 600
 601 static int technology_disable(struct connman_technology *technology,
 602                 DBusMessage *msg)
 603 {
 604         GSList *list;
 605         int err = 0;
 606         int ret = -ENODEV;
 607         DBusMessage *reply;
 608
 609         DBG("technology %p disable", technology);
 610
 611         __sync_synchronize();
 612         if (technology->enabled == 0) {
 613                 err = -EALREADY;
 614                 goto done;
 615         }
 616
 617         if (technology->pending_reply != NULL) {
 618                 err = -EBUSY;
 619                 goto done;
 620         }
 621
 622         if (technology->tethering == TRUE)
 623                 set_tethering(technology, FALSE);
 624
 625         if (msg != NULL) {
 626                 technology->enable_persistent = FALSE;
 627                 save_state(technology);
 628         }
 629
 630         __connman_rfkill_block(technology->type, TRUE);
 631
 632         for (list = technology->device_list; list; list = list->next) {
 633                 struct connman_device *device = list->data;
 634
 635                 err = __connman_device_disable(device);
 636                 if (err == 0)
 637                         ret = 0;
 638         }
 639
 640 done:
 641         if (ret == 0) {
 642                 if (msg != NULL)
 643                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 644                 return ret;
 645         }
 646
 647         if (msg != NULL) {
 648                 if (err == -EINPROGRESS) {
 649                         technology->pending_reply = dbus_message_ref(msg);
 650                         technology->pending_timeout = g_timeout_add_seconds(10,
 651                                         technology_pending_reply, technology);
 652                 } else {
 653                         reply = __connman_error_failed(msg, -err);
 654                         if (reply != NULL)
 655                                 g_dbus_send_message(connection, reply);
 656                 }
 657         }
 658
 659         return err;
 660 }
 661
 662 static DBusMessage *set_property(DBusConnection *conn,
 663                                         DBusMessage *msg, void *data)
 664 {
 665         struct connman_technology *technology = data;
 666         DBusMessageIter iter, value;
 667         const char *name;
 668         int type;
 669
 670         DBG("conn %p", conn);
 671
 672         if (dbus_message_iter_init(msg, &iter) == FALSE)
 673                 return __connman_error_invalid_arguments(msg);
 674
 675         dbus_message_iter_get_basic(&iter, &name);
 676         dbus_message_iter_next(&iter);
 677         dbus_message_iter_recurse(&iter, &value);
 678
 679         type = dbus_message_iter_get_arg_type(&value);
 680
 681         DBG("property %s", name);
 682
 683         if (g_str_equal(name, "Tethering") == TRUE) {
 684                 int err;
 685                 connman_bool_t tethering;
 686
 687                 if (type != DBUS_TYPE_BOOLEAN)
 688                         return __connman_error_invalid_arguments(msg);
 689
 690                 dbus_message_iter_get_basic(&value, &tethering);
 691
 692                 if (technology->tethering == tethering)
 693                         return __connman_error_in_progress(msg);
 694
 695                 err = set_tethering(technology, tethering);
 696                 if (err < 0)
 697                         return __connman_error_failed(msg, -err);
 698
 699         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 700                 const char *str;
 701
 702                 dbus_message_iter_get_basic(&value, &str);
 703
 704                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 705                         return __connman_error_not_supported(msg);
 706
 707                 technology->tethering_ident = g_strdup(str);
 708         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 709                 const char *str;
 710
 711                 dbus_message_iter_get_basic(&value, &str);
 712
 713                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 714                         return __connman_error_not_supported(msg);
 715
 716                 if (strlen(str) < 8)
 717                         return __connman_error_invalid_arguments(msg);
 718
 719                 technology->tethering_passphrase = g_strdup(str);
 720         } else if (g_str_equal(name, "Powered") == TRUE) {
 721                 connman_bool_t enable;
 722
 723                 if (type != DBUS_TYPE_BOOLEAN)
 724                         return __connman_error_invalid_arguments(msg);
 725
 726                 dbus_message_iter_get_basic(&value, &enable);
 727                 if (enable == TRUE)
 728                         technology_enable(technology, msg);
 729                 else
 730                         technology_disable(technology, msg);
 731
 732         } else
 733                 return __connman_error_invalid_property(msg);
 734
 735         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 736 }
 737
 738 static GDBusMethodTable technology_methods[] = {
 739         { "GetProperties", "",   "a{sv}", get_properties },
 740         { "SetProperty",   "sv", "",      set_property   },
 741         { },
 742 };
 743
 744 static GDBusSignalTable technology_signals[] = {
 745         { "PropertyChanged", "sv" },
 746         { },
 747 };
 748
 749 static struct connman_technology *technology_find(enum connman_service_type type)
 750 {
 751         GSList *list;
 752
 753         DBG("type %d", type);
 754
 755         for (list = technology_list; list; list = list->next) {
 756                 struct connman_technology *technology = list->data;
 757
 758                 if (technology->type == type)
 759                         return technology;
 760         }
 761
 762         return NULL;
 763 }
 764
 765 static struct connman_technology *technology_get(enum connman_service_type type)
 766 {
 767         struct connman_technology *technology;
 768         struct connman_technology_driver *driver = NULL;
 769         const char *str;
 770         GSList *list;
 771         int err;
 772
 773         DBG("type %d", type);
 774
 775         str = __connman_service_type2string(type);
 776         if (str == NULL)
 777                 return NULL;
 778
 779         technology = technology_find(type);
 780         if (technology != NULL)
 781                 return technology;
 782
 783         /* First check if we have a driver for this technology type */
 784         for (list = driver_list; list; list = list->next) {
 785                 driver = list->data;
 786
 787                 if (driver->type == type)
 788                         break;
 789                 else
 790                         driver = NULL;
 791         }
 792
 793         if (driver == NULL) {
 794                 DBG("No matching driver found for %s.",
 795                                 __connman_service_type2string(type));
 796                 return NULL;
 797         }
 798
 799         technology = g_try_new0(struct connman_technology, 1);
 800         if (technology == NULL)
 801                 return NULL;
 802
 803         technology->refcount = 1;
 804
 805         technology->type = type;
 806         technology->path = g_strdup_printf("%s/technology/%s",
 807                                                         CONNMAN_PATH, str);
 808
 809         technology->rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
 810                                                         NULL, free_rfkill);
 811         technology->device_list = NULL;
 812
 813         technology->pending_reply = NULL;
 814         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 815
 816         load_state(technology);
 817
 818         if (g_dbus_register_interface(connection, technology->path,
 819                                         CONNMAN_TECHNOLOGY_INTERFACE,
 820                                         technology_methods, technology_signals,
 821                                         NULL, technology, NULL) == FALSE) {
 822                 connman_error("Failed to register %s", technology->path);
 823                 g_free(technology);
 824                 return NULL;
 825         }
 826
 827         technology_list = g_slist_append(technology_list, technology);
 828
 829         technology_added_signal(technology);
 830
 831         technology->driver = driver;
 832         err = driver->probe(technology);
 833         if (err != 0)
 834                 DBG("Driver probe failed for technology %p", technology);
 835
 836         DBG("technology %p", technology);
 837
 838         return technology;
 839 }
 840
 841 static void technology_put(struct connman_technology *technology)
 842 {
 843         DBG("technology %p", technology);
 844
 845         if (__sync_fetch_and_sub(&technology->refcount, 1) != 1)
 846                 return;
 847
 848         if (technology->driver) {
 849                 technology->driver->remove(technology);
 850                 technology->driver = NULL;
 851         }
 852
 853         technology_list = g_slist_remove(technology_list, technology);
 854
 855         technology_removed_signal(technology);
 856
 857         g_dbus_unregister_interface(connection, technology->path,
 858                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 859
 860         g_slist_free(technology->device_list);
 861         g_hash_table_destroy(technology->rfkill_list);
 862
 863         g_free(technology->path);
 864         g_free(technology->regdom);
 865         g_free(technology);
 866 }
 867
 868 void __connman_technology_add_interface(enum connman_service_type type,
 869                                 int index, const char *name, const char *ident)
 870 {
 871         struct connman_technology *technology;
 872
 873         switch (type) {
 874         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 875         case CONNMAN_SERVICE_TYPE_SYSTEM:
 876                 return;
 877         case CONNMAN_SERVICE_TYPE_ETHERNET:
 878         case CONNMAN_SERVICE_TYPE_WIFI:
 879         case CONNMAN_SERVICE_TYPE_WIMAX:
 880         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 881         case CONNMAN_SERVICE_TYPE_CELLULAR:
 882         case CONNMAN_SERVICE_TYPE_GPS:
 883         case CONNMAN_SERVICE_TYPE_VPN:
 884         case CONNMAN_SERVICE_TYPE_GADGET:
 885                 break;
 886         }
 887
 888         connman_info("Adding interface %s [ %s ]", name,
 889                                 __connman_service_type2string(type));
 890
 891         technology = technology_find(type);
 892
 893         if (technology == NULL || technology->driver == NULL
 894                         || technology->driver->add_interface == NULL)
 895                 return;
 896
 897         technology->driver->add_interface(technology,
 898                                         index, name, ident);
 899 }
 900
 901 void __connman_technology_remove_interface(enum connman_service_type type,
 902                                 int index, const char *name, const char *ident)
 903 {
 904         struct connman_technology *technology;
 905
 906         switch (type) {
 907         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 908         case CONNMAN_SERVICE_TYPE_SYSTEM:
 909                 return;
 910         case CONNMAN_SERVICE_TYPE_ETHERNET:
 911         case CONNMAN_SERVICE_TYPE_WIFI:
 912         case CONNMAN_SERVICE_TYPE_WIMAX:
 913         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 914         case CONNMAN_SERVICE_TYPE_CELLULAR:
 915         case CONNMAN_SERVICE_TYPE_GPS:
 916         case CONNMAN_SERVICE_TYPE_VPN:
 917         case CONNMAN_SERVICE_TYPE_GADGET:
 918                 break;
 919         }
 920
 921         connman_info("Remove interface %s [ %s ]", name,
 922                                 __connman_service_type2string(type));
 923
 924         technology = technology_find(type);
 925
 926         if (technology == NULL || technology->driver == NULL)
 927                 return;
 928
 929         if (technology->driver->remove_interface)
 930                 technology->driver->remove_interface(technology, index);
 931 }
 932
 933 int __connman_technology_add_device(struct connman_device *device)
 934 {
 935         struct connman_technology *technology;
 936         enum connman_service_type type;
 937
 938         DBG("device %p", device);
 939
 940         type = __connman_device_get_service_type(device);
 941
 942         technology = technology_get(type);
 943         if (technology == NULL)
 944                 return -ENXIO;
 945
 946         if (technology->enable_persistent && !global_offlinemode)
 947                 __connman_device_enable(device);
 948         /* if technology persistent state is offline */
 949         if (!technology->enable_persistent)
 950                 __connman_device_disable(device);
 951
 952         technology->device_list = g_slist_append(technology->device_list,
 953                                                                 device);
 954
 955         return 0;
 956 }
 957
 958 int __connman_technology_remove_device(struct connman_device *device)
 959 {
 960         struct connman_technology *technology;
 961         enum connman_service_type type;
 962
 963         DBG("device %p", device);
 964
 965         type = __connman_device_get_service_type(device);
 966
 967         technology = technology_find(type);
 968         if (technology == NULL)
 969                 return -ENXIO;
 970
 971         technology->device_list = g_slist_remove(technology->device_list,
 972                                                                 device);
 973         if (technology->device_list == NULL) {
 974                 technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 975                 state_changed(technology);
 976         }
 977
 978         return 0;
 979 }
 980
 981 static void powered_changed(struct connman_technology *technology)
 982 {
 983         connman_bool_t powered;
 984
 985         __sync_synchronize();
 986         if (technology->enabled >0)
 987                 powered = TRUE;
 988         else
 989                 powered = FALSE;
 990
 991         connman_dbus_property_changed_basic(technology->path,
 992                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
 993                         DBUS_TYPE_BOOLEAN, &powered);
 994 }
 995
 996 int __connman_technology_enabled(enum connman_service_type type)
 997 {
 998         struct connman_technology *technology;
 999
1000         technology = technology_find(type);
1001         if (technology == NULL)
1002                 return -ENXIO;
1003
1004         if (__sync_fetch_and_add(&technology->enabled, 1) == 0) {
1005                 technology->state = CONNMAN_TECHNOLOGY_STATE_ENABLED;
1006                 state_changed(technology);
1007                 powered_changed(technology);
1008         }
1009
1010         if (technology->pending_reply != NULL) {
1011                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1012                 dbus_message_unref(technology->pending_reply);
1013                 g_source_remove(technology->pending_timeout);
1014                 technology->pending_reply = NULL;
1015                 technology->pending_timeout = 0;
1016         }
1017
1018         return 0;
1019 }
1020
1021 int __connman_technology_disabled(enum connman_service_type type)
1022 {
1023         struct connman_technology *technology;
1024
1025         technology = technology_find(type);
1026         if (technology == NULL)
1027                 return -ENXIO;
1028
1029         if (technology->pending_reply != NULL) {
1030                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1031                 dbus_message_unref(technology->pending_reply);
1032                 g_source_remove(technology->pending_timeout);
1033                 technology->pending_reply = NULL;
1034                 technology->pending_timeout = 0;
1035         }
1036
1037         if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
1038                 return 0;
1039
1040         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
1041         state_changed(technology);
1042         powered_changed(technology);
1043
1044         return 0;
1045 }
1046
1047 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1048 {
1049         GSList *list;
1050         int err = -EINVAL;
1051
1052         if (global_offlinemode == offlinemode)
1053                 return 0;
1054
1055         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1056
1057         /*
1058          * This is a bit tricky. When you set offlinemode, there is no
1059          * way to differentiate between attempting offline mode and
1060          * resuming offlinemode from last saved profile. We need that
1061          * information in rfkill_update, otherwise it falls back on the
1062          * technology's persistent state. Hence we set the offline mode here
1063          * but save it & call the notifier only if its successful.
1064          */
1065
1066         global_offlinemode = offlinemode;
1067
1068         /* Traverse technology list, enable/disable each technology. */
1069         for (list = technology_list; list; list = list->next) {
1070                 struct connman_technology *technology = list->data;
1071
1072                 if (offlinemode)
1073                         err = technology_disable(technology, NULL);
1074
1075                 if (!offlinemode && technology->enable_persistent)
1076                         err = technology_enable(technology, NULL);
1077         }
1078
1079         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1080                 connman_technology_save_offlinemode();
1081                 __connman_notifier_offlinemode(offlinemode);
1082         } else
1083                 global_offlinemode = connman_technology_load_offlinemode();
1084
1085         return err;
1086 }
1087
1088 int __connman_technology_add_rfkill(unsigned int index,
1089                                         enum connman_service_type type,
1090                                                 connman_bool_t softblock,
1091                                                 connman_bool_t hardblock)
1092 {
1093         struct connman_technology *technology;
1094         struct connman_rfkill *rfkill;
1095
1096         DBG("index %u type %d soft %u hard %u", index, type,
1097                                                         softblock, hardblock);
1098
1099         technology = technology_get(type);
1100         if (technology == NULL)
1101                 return -ENXIO;
1102
1103         rfkill = g_try_new0(struct connman_rfkill, 1);
1104         if (rfkill == NULL)
1105                 return -ENOMEM;
1106
1107         rfkill->index = index;
1108         rfkill->type = type;
1109         rfkill->softblock = softblock;
1110         rfkill->hardblock = hardblock;
1111
1112         g_hash_table_replace(technology->rfkill_list, &rfkill->index, rfkill);
1113
1114         if (hardblock) {
1115                 DBG("%s is switched off.", get_name(type));
1116                 return 0;
1117         }
1118
1119         /*
1120          * If Offline mode is on, we softblock the device if it isnt already.
1121          * If Offline mode is off, we rely on the persistent state of tech.
1122          */
1123         if (global_offlinemode) {
1124                 if (!softblock)
1125                         return __connman_rfkill_block(type, TRUE);
1126         } else {
1127                 if (technology->enable_persistent && softblock)
1128                         return __connman_rfkill_block(type, FALSE);
1129                 /* if technology persistent state is offline */
1130                 if (!technology->enable_persistent && !softblock)
1131                         return __connman_rfkill_block(type, TRUE);
1132         }
1133
1134         return 0;
1135 }
1136
1137 int __connman_technology_update_rfkill(unsigned int index,
1138                                         enum connman_service_type type,
1139                                                 connman_bool_t softblock,
1140                                                 connman_bool_t hardblock)
1141 {
1142         struct connman_technology *technology;
1143         struct connman_rfkill *rfkill;
1144
1145         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1146
1147         technology = technology_find(type);
1148         if (technology == NULL)
1149                 return -ENXIO;
1150
1151         rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
1152         if (rfkill == NULL)
1153                 return -ENXIO;
1154
1155         if (rfkill->softblock == softblock &&
1156                 rfkill->hardblock == hardblock)
1157                 return 0;
1158
1159         rfkill->softblock = softblock;
1160         rfkill->hardblock = hardblock;
1161
1162         if (hardblock) {
1163                 DBG("%s is switched off.", get_name(type));
1164                 return 0;
1165         }
1166
1167         if (!global_offlinemode) {
1168                 if (technology->enable_persistent && softblock)
1169                         return __connman_rfkill_block(type, FALSE);
1170                 if (!technology->enable_persistent && !softblock)
1171                         return __connman_rfkill_block(type, TRUE);
1172         }
1173
1174         return 0;
1175 }
1176
1177 int __connman_technology_remove_rfkill(unsigned int index,
1178                                         enum connman_service_type type)
1179 {
1180         struct connman_technology *technology;
1181         struct connman_rfkill *rfkill;
1182
1183         DBG("index %u", index);
1184
1185         technology = technology_find(type);
1186         if (technology == NULL)
1187                 return -ENXIO;
1188
1189         rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
1190         if (rfkill == NULL)
1191                 return -ENXIO;
1192
1193         g_hash_table_remove(technology->rfkill_list, &index);
1194
1195         technology_put(technology);
1196
1197         return 0;
1198 }
1199
1200 int __connman_technology_init(void)
1201 {
1202         DBG("");
1203
1204         connection = connman_dbus_get_connection();
1205
1206         global_offlinemode = connman_technology_load_offlinemode();
1207
1208         return 0;
1209 }
1210
1211 void __connman_technology_cleanup(void)
1212 {
1213         DBG("");
1214
1215         dbus_connection_unref(connection);
1216 }