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         append_properties(&iter, technology);
 453
 454         dbus_connection_send(connection, signal, NULL);
 455         dbus_message_unref(signal);
 456 }
 457
 458 static void technology_removed_signal(struct connman_technology *technology)
 459 {
 460         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 461                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 462                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 463                         DBUS_TYPE_INVALID);
 464 }
 465
 466 static DBusMessage *get_properties(DBusConnection *conn,
 467                                         DBusMessage *message, void *user_data)
 468 {
 469         struct connman_technology *technology = user_data;
 470         DBusMessage *reply;
 471         DBusMessageIter iter;
 472
 473         reply = dbus_message_new_method_return(message);
 474         if (reply == NULL)
 475                 return NULL;
 476
 477         dbus_message_iter_init_append(reply, &iter);
 478         append_properties(&iter, technology);
 479
 480         return reply;
 481 }
 482
 483 void __connman_technology_list_struct(DBusMessageIter *array)
 484 {
 485         GSList *list;
 486         DBusMessageIter entry;
 487
 488         for (list = technology_list; list; list = list->next) {
 489                 struct connman_technology *technology = list->data;
 490
 491                 if (technology->path == NULL)
 492                         continue;
 493
 494                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 495                                 NULL, &entry);
 496                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 497                                 &technology->path);
 498                 append_properties(&entry, technology);
 499                 dbus_message_iter_close_container(array, &entry);
 500         }
 501 }
 502
 503 static gboolean technology_pending_reply(gpointer user_data)
 504 {
 505         struct connman_technology *technology = user_data;
 506         DBusMessage *reply;
 507
 508         /* Power request timedout, send ETIMEDOUT. */
 509         if (technology->pending_reply != NULL) {
 510                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 511                 if (reply != NULL)
 512                         g_dbus_send_message(connection, reply);
 513
 514                 dbus_message_unref(technology->pending_reply);
 515                 technology->pending_reply = NULL;
 516                 technology->pending_timeout = 0;
 517         }
 518
 519         return FALSE;
 520 }
 521
 522 static int technology_enable(struct connman_technology *technology,
 523                 DBusMessage *msg)
 524 {
 525         GSList *list;
 526         int err = 0;
 527         int ret = -ENODEV;
 528         DBusMessage *reply;
 529
 530         DBG("technology %p enable", technology);
 531
 532         __sync_synchronize();
 533         if (technology->enabled > 0) {
 534                 err = -EALREADY;
 535                 goto done;
 536         }
 537
 538         if (technology->pending_reply != NULL) {
 539                 err = -EBUSY;
 540                 goto done;
 541         }
 542
 543         if (msg != NULL) {
 544                 /*
 545                  * This is a bit of a trick. When msg is not NULL it means
 546                  * thats technology_enable was invoked from the manager API.
 547                  * Hence we save the state here.
 548                  */
 549                 technology->enable_persistent = TRUE;
 550                 save_state(technology);
 551         }
 552
 553         __connman_rfkill_block(technology->type, FALSE);
 554
 555         /*
 556          * An empty device list means that devices in the technology
 557          * were rfkill blocked. The unblock above will enable the devs.
 558          */
 559         if (technology->device_list == NULL) {
 560                 ret = 0;
 561                 goto done;
 562         }
 563
 564         for (list = technology->device_list; list; list = list->next) {
 565                 struct connman_device *device = list->data;
 566
 567                 err = __connman_device_enable(device);
 568                 /*
 569                  * err = 0 : Device was enabled right away.
 570                  * If atleast one device gets enabled, we consider
 571                  * the technology to be enabled.
 572                  */
 573                 if (err == 0)
 574                         ret = 0;
 575         }
 576
 577 done:
 578         if (ret == 0) {
 579                 if (msg != NULL)
 580                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 581                 return ret;
 582         }
 583
 584         if (msg != NULL) {
 585                 if (err == -EINPROGRESS) {
 586                         technology->pending_reply = dbus_message_ref(msg);
 587                         technology->pending_timeout = g_timeout_add_seconds(10,
 588                                         technology_pending_reply, technology);
 589                 } else {
 590                         reply = __connman_error_failed(msg, -err);
 591                         if (reply != NULL)
 592                                 g_dbus_send_message(connection, reply);
 593                 }
 594         }
 595
 596         return err;
 597 }
 598
 599 static int technology_disable(struct connman_technology *technology,
 600                 DBusMessage *msg)
 601 {
 602         GSList *list;
 603         int err = 0;
 604         int ret = -ENODEV;
 605         DBusMessage *reply;
 606
 607         DBG("technology %p disable", technology);
 608
 609         __sync_synchronize();
 610         if (technology->enabled == 0) {
 611                 err = -EALREADY;
 612                 goto done;
 613         }
 614
 615         if (technology->pending_reply != NULL) {
 616                 err = -EBUSY;
 617                 goto done;
 618         }
 619
 620         if (technology->tethering == TRUE)
 621                 set_tethering(technology, FALSE);
 622
 623         if (msg != NULL) {
 624                 technology->enable_persistent = FALSE;
 625                 save_state(technology);
 626         }
 627
 628         __connman_rfkill_block(technology->type, TRUE);
 629
 630         for (list = technology->device_list; list; list = list->next) {
 631                 struct connman_device *device = list->data;
 632
 633                 err = __connman_device_disable(device);
 634                 if (err == 0)
 635                         ret = 0;
 636         }
 637
 638 done:
 639         if (ret == 0) {
 640                 if (msg != NULL)
 641                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 642                 return ret;
 643         }
 644
 645         if (msg != NULL) {
 646                 if (err == -EINPROGRESS) {
 647                         technology->pending_reply = dbus_message_ref(msg);
 648                         technology->pending_timeout = g_timeout_add_seconds(10,
 649                                         technology_pending_reply, technology);
 650                 } else {
 651                         reply = __connman_error_failed(msg, -err);
 652                         if (reply != NULL)
 653                                 g_dbus_send_message(connection, reply);
 654                 }
 655         }
 656
 657         return err;
 658 }
 659
 660 static DBusMessage *set_property(DBusConnection *conn,
 661                                         DBusMessage *msg, void *data)
 662 {
 663         struct connman_technology *technology = data;
 664         DBusMessageIter iter, value;
 665         const char *name;
 666         int type;
 667
 668         DBG("conn %p", conn);
 669
 670         if (dbus_message_iter_init(msg, &iter) == FALSE)
 671                 return __connman_error_invalid_arguments(msg);
 672
 673         dbus_message_iter_get_basic(&iter, &name);
 674         dbus_message_iter_next(&iter);
 675         dbus_message_iter_recurse(&iter, &value);
 676
 677         type = dbus_message_iter_get_arg_type(&value);
 678
 679         DBG("property %s", name);
 680
 681         if (g_str_equal(name, "Tethering") == TRUE) {
 682                 int err;
 683                 connman_bool_t tethering;
 684
 685                 if (type != DBUS_TYPE_BOOLEAN)
 686                         return __connman_error_invalid_arguments(msg);
 687
 688                 dbus_message_iter_get_basic(&value, &tethering);
 689
 690                 if (technology->tethering == tethering)
 691                         return __connman_error_in_progress(msg);
 692
 693                 err = set_tethering(technology, tethering);
 694                 if (err < 0)
 695                         return __connman_error_failed(msg, -err);
 696
 697         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 698                 const char *str;
 699
 700                 dbus_message_iter_get_basic(&value, &str);
 701
 702                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 703                         return __connman_error_not_supported(msg);
 704
 705                 technology->tethering_ident = g_strdup(str);
 706         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 707                 const char *str;
 708
 709                 dbus_message_iter_get_basic(&value, &str);
 710
 711                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 712                         return __connman_error_not_supported(msg);
 713
 714                 if (strlen(str) < 8)
 715                         return __connman_error_invalid_arguments(msg);
 716
 717                 technology->tethering_passphrase = g_strdup(str);
 718         } else if (g_str_equal(name, "Powered") == TRUE) {
 719                 connman_bool_t enable;
 720
 721                 if (type != DBUS_TYPE_BOOLEAN)
 722                         return __connman_error_invalid_arguments(msg);
 723
 724                 dbus_message_iter_get_basic(&value, &enable);
 725                 if (enable == TRUE)
 726                         technology_enable(technology, msg);
 727                 else
 728                         technology_disable(technology, msg);
 729
 730         } else
 731                 return __connman_error_invalid_property(msg);
 732
 733         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 734 }
 735
 736 static GDBusMethodTable technology_methods[] = {
 737         { "GetProperties", "",   "a{sv}", get_properties },
 738         { "SetProperty",   "sv", "",      set_property   },
 739         { },
 740 };
 741
 742 static GDBusSignalTable technology_signals[] = {
 743         { "PropertyChanged", "sv" },
 744         { },
 745 };
 746
 747 static struct connman_technology *technology_find(enum connman_service_type type)
 748 {
 749         GSList *list;
 750
 751         DBG("type %d", type);
 752
 753         for (list = technology_list; list; list = list->next) {
 754                 struct connman_technology *technology = list->data;
 755
 756                 if (technology->type == type)
 757                         return technology;
 758         }
 759
 760         return NULL;
 761 }
 762
 763 static struct connman_technology *technology_get(enum connman_service_type type)
 764 {
 765         struct connman_technology *technology;
 766         struct connman_technology_driver *driver = NULL;
 767         const char *str;
 768         GSList *list;
 769         int err;
 770
 771         DBG("type %d", type);
 772
 773         str = __connman_service_type2string(type);
 774         if (str == NULL)
 775                 return NULL;
 776
 777         technology = technology_find(type);
 778         if (technology != NULL)
 779                 return technology;
 780
 781         /* First check if we have a driver for this technology type */
 782         for (list = driver_list; list; list = list->next) {
 783                 driver = list->data;
 784
 785                 if (driver->type == type)
 786                         break;
 787                 else
 788                         driver = NULL;
 789         }
 790
 791         if (driver == NULL) {
 792                 DBG("No matching driver found for %s.",
 793                                 __connman_service_type2string(type));
 794                 return NULL;
 795         }
 796
 797         technology = g_try_new0(struct connman_technology, 1);
 798         if (technology == NULL)
 799                 return NULL;
 800
 801         technology->refcount = 1;
 802
 803         technology->type = type;
 804         technology->path = g_strdup_printf("%s/technology/%s",
 805                                                         CONNMAN_PATH, str);
 806
 807         technology->rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
 808                                                         NULL, free_rfkill);
 809         technology->device_list = NULL;
 810
 811         technology->pending_reply = NULL;
 812         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 813
 814         load_state(technology);
 815
 816         if (g_dbus_register_interface(connection, technology->path,
 817                                         CONNMAN_TECHNOLOGY_INTERFACE,
 818                                         technology_methods, technology_signals,
 819                                         NULL, technology, NULL) == FALSE) {
 820                 connman_error("Failed to register %s", technology->path);
 821                 g_free(technology);
 822                 return NULL;
 823         }
 824
 825         technology_list = g_slist_append(technology_list, technology);
 826
 827         technology_added_signal(technology);
 828
 829         technology->driver = driver;
 830         err = driver->probe(technology);
 831         if (err != 0)
 832                 DBG("Driver probe failed for technology %p", technology);
 833
 834         DBG("technology %p", technology);
 835
 836         return technology;
 837 }
 838
 839 static void technology_put(struct connman_technology *technology)
 840 {
 841         DBG("technology %p", technology);
 842
 843         if (__sync_fetch_and_sub(&technology->refcount, 1) != 1)
 844                 return;
 845
 846         if (technology->driver) {
 847                 technology->driver->remove(technology);
 848                 technology->driver = NULL;
 849         }
 850
 851         technology_list = g_slist_remove(technology_list, technology);
 852
 853         technology_removed_signal(technology);
 854
 855         g_dbus_unregister_interface(connection, technology->path,
 856                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 857
 858         g_slist_free(technology->device_list);
 859         g_hash_table_destroy(technology->rfkill_list);
 860
 861         g_free(technology->path);
 862         g_free(technology->regdom);
 863         g_free(technology);
 864 }
 865
 866 void __connman_technology_add_interface(enum connman_service_type type,
 867                                 int index, const char *name, const char *ident)
 868 {
 869         struct connman_technology *technology;
 870
 871         switch (type) {
 872         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 873         case CONNMAN_SERVICE_TYPE_SYSTEM:
 874                 return;
 875         case CONNMAN_SERVICE_TYPE_ETHERNET:
 876         case CONNMAN_SERVICE_TYPE_WIFI:
 877         case CONNMAN_SERVICE_TYPE_WIMAX:
 878         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 879         case CONNMAN_SERVICE_TYPE_CELLULAR:
 880         case CONNMAN_SERVICE_TYPE_GPS:
 881         case CONNMAN_SERVICE_TYPE_VPN:
 882         case CONNMAN_SERVICE_TYPE_GADGET:
 883                 break;
 884         }
 885
 886         connman_info("Adding interface %s [ %s ]", name,
 887                                 __connman_service_type2string(type));
 888
 889         technology = technology_find(type);
 890
 891         if (technology == NULL || technology->driver == NULL
 892                         || technology->driver->add_interface == NULL)
 893                 return;
 894
 895         technology->driver->add_interface(technology,
 896                                         index, name, ident);
 897 }
 898
 899 void __connman_technology_remove_interface(enum connman_service_type type,
 900                                 int index, const char *name, const char *ident)
 901 {
 902         struct connman_technology *technology;
 903
 904         switch (type) {
 905         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 906         case CONNMAN_SERVICE_TYPE_SYSTEM:
 907                 return;
 908         case CONNMAN_SERVICE_TYPE_ETHERNET:
 909         case CONNMAN_SERVICE_TYPE_WIFI:
 910         case CONNMAN_SERVICE_TYPE_WIMAX:
 911         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 912         case CONNMAN_SERVICE_TYPE_CELLULAR:
 913         case CONNMAN_SERVICE_TYPE_GPS:
 914         case CONNMAN_SERVICE_TYPE_VPN:
 915         case CONNMAN_SERVICE_TYPE_GADGET:
 916                 break;
 917         }
 918
 919         connman_info("Remove interface %s [ %s ]", name,
 920                                 __connman_service_type2string(type));
 921
 922         technology = technology_find(type);
 923
 924         if (technology == NULL || technology->driver == NULL)
 925                 return;
 926
 927         if (technology->driver->remove_interface)
 928                 technology->driver->remove_interface(technology, index);
 929 }
 930
 931 int __connman_technology_add_device(struct connman_device *device)
 932 {
 933         struct connman_technology *technology;
 934         enum connman_service_type type;
 935
 936         DBG("device %p", device);
 937
 938         type = __connman_device_get_service_type(device);
 939
 940         technology = technology_get(type);
 941         if (technology == NULL)
 942                 return -ENXIO;
 943
 944         if (technology->enable_persistent && !global_offlinemode)
 945                 __connman_device_enable(device);
 946         /* if technology persistent state is offline */
 947         if (!technology->enable_persistent)
 948                 __connman_device_disable(device);
 949
 950         technology->device_list = g_slist_append(technology->device_list,
 951                                                                 device);
 952
 953         return 0;
 954 }
 955
 956 int __connman_technology_remove_device(struct connman_device *device)
 957 {
 958         struct connman_technology *technology;
 959         enum connman_service_type type;
 960
 961         DBG("device %p", device);
 962
 963         type = __connman_device_get_service_type(device);
 964
 965         technology = technology_find(type);
 966         if (technology == NULL)
 967                 return -ENXIO;
 968
 969         technology->device_list = g_slist_remove(technology->device_list,
 970                                                                 device);
 971         if (technology->device_list == NULL) {
 972                 technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 973                 state_changed(technology);
 974         }
 975
 976         return 0;
 977 }
 978
 979 static void powered_changed(struct connman_technology *technology)
 980 {
 981         connman_bool_t powered;
 982
 983         __sync_synchronize();
 984         if (technology->enabled >0)
 985                 powered = TRUE;
 986         else
 987                 powered = FALSE;
 988
 989         connman_dbus_property_changed_basic(technology->path,
 990                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
 991                         DBUS_TYPE_BOOLEAN, &powered);
 992 }
 993
 994 int __connman_technology_enabled(enum connman_service_type type)
 995 {
 996         struct connman_technology *technology;
 997
 998         technology = technology_find(type);
 999         if (technology == NULL)
1000                 return -ENXIO;
1001
1002         if (__sync_fetch_and_add(&technology->enabled, 1) == 0) {
1003                 technology->state = CONNMAN_TECHNOLOGY_STATE_ENABLED;
1004                 state_changed(technology);
1005                 powered_changed(technology);
1006         }
1007
1008         if (technology->pending_reply != NULL) {
1009                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1010                 dbus_message_unref(technology->pending_reply);
1011                 g_source_remove(technology->pending_timeout);
1012                 technology->pending_reply = NULL;
1013                 technology->pending_timeout = 0;
1014         }
1015
1016         return 0;
1017 }
1018
1019 int __connman_technology_disabled(enum connman_service_type type)
1020 {
1021         struct connman_technology *technology;
1022
1023         technology = technology_find(type);
1024         if (technology == NULL)
1025                 return -ENXIO;
1026
1027         if (technology->pending_reply != NULL) {
1028                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1029                 dbus_message_unref(technology->pending_reply);
1030                 g_source_remove(technology->pending_timeout);
1031                 technology->pending_reply = NULL;
1032                 technology->pending_timeout = 0;
1033         }
1034
1035         if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
1036                 return 0;
1037
1038         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
1039         state_changed(technology);
1040         powered_changed(technology);
1041
1042         return 0;
1043 }
1044
1045 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1046 {
1047         GSList *list;
1048         int err = -EINVAL;
1049
1050         if (global_offlinemode == offlinemode)
1051                 return 0;
1052
1053         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1054
1055         /*
1056          * This is a bit tricky. When you set offlinemode, there is no
1057          * way to differentiate between attempting offline mode and
1058          * resuming offlinemode from last saved profile. We need that
1059          * information in rfkill_update, otherwise it falls back on the
1060          * technology's persistent state. Hence we set the offline mode here
1061          * but save it & call the notifier only if its successful.
1062          */
1063
1064         global_offlinemode = offlinemode;
1065
1066         /* Traverse technology list, enable/disable each technology. */
1067         for (list = technology_list; list; list = list->next) {
1068                 struct connman_technology *technology = list->data;
1069
1070                 if (offlinemode)
1071                         err = technology_disable(technology, NULL);
1072
1073                 if (!offlinemode && technology->enable_persistent)
1074                         err = technology_enable(technology, NULL);
1075         }
1076
1077         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1078                 connman_technology_save_offlinemode();
1079                 __connman_notifier_offlinemode(offlinemode);
1080         } else
1081                 global_offlinemode = connman_technology_load_offlinemode();
1082
1083         return err;
1084 }
1085
1086 int __connman_technology_add_rfkill(unsigned int index,
1087                                         enum connman_service_type type,
1088                                                 connman_bool_t softblock,
1089                                                 connman_bool_t hardblock)
1090 {
1091         struct connman_technology *technology;
1092         struct connman_rfkill *rfkill;
1093
1094         DBG("index %u type %d soft %u hard %u", index, type,
1095                                                         softblock, hardblock);
1096
1097         technology = technology_get(type);
1098         if (technology == NULL)
1099                 return -ENXIO;
1100
1101         rfkill = g_try_new0(struct connman_rfkill, 1);
1102         if (rfkill == NULL)
1103                 return -ENOMEM;
1104
1105         rfkill->index = index;
1106         rfkill->type = type;
1107         rfkill->softblock = softblock;
1108         rfkill->hardblock = hardblock;
1109
1110         g_hash_table_replace(technology->rfkill_list, &rfkill->index, rfkill);
1111
1112         if (hardblock) {
1113                 DBG("%s is switched off.", get_name(type));
1114                 return 0;
1115         }
1116
1117         /*
1118          * If Offline mode is on, we softblock the device if it isnt already.
1119          * If Offline mode is off, we rely on the persistent state of tech.
1120          */
1121         if (global_offlinemode) {
1122                 if (!softblock)
1123                         return __connman_rfkill_block(type, TRUE);
1124         } else {
1125                 if (technology->enable_persistent && softblock)
1126                         return __connman_rfkill_block(type, FALSE);
1127                 /* if technology persistent state is offline */
1128                 if (!technology->enable_persistent && !softblock)
1129                         return __connman_rfkill_block(type, TRUE);
1130         }
1131
1132         return 0;
1133 }
1134
1135 int __connman_technology_update_rfkill(unsigned int index,
1136                                         enum connman_service_type type,
1137                                                 connman_bool_t softblock,
1138                                                 connman_bool_t hardblock)
1139 {
1140         struct connman_technology *technology;
1141         struct connman_rfkill *rfkill;
1142
1143         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1144
1145         technology = technology_find(type);
1146         if (technology == NULL)
1147                 return -ENXIO;
1148
1149         rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
1150         if (rfkill == NULL)
1151                 return -ENXIO;
1152
1153         if (rfkill->softblock == softblock &&
1154                 rfkill->hardblock == hardblock)
1155                 return 0;
1156
1157         rfkill->softblock = softblock;
1158         rfkill->hardblock = hardblock;
1159
1160         if (hardblock) {
1161                 DBG("%s is switched off.", get_name(type));
1162                 return 0;
1163         }
1164
1165         if (!global_offlinemode) {
1166                 if (technology->enable_persistent && softblock)
1167                         return __connman_rfkill_block(type, FALSE);
1168                 if (!technology->enable_persistent && !softblock)
1169                         return __connman_rfkill_block(type, TRUE);
1170         }
1171
1172         return 0;
1173 }
1174
1175 int __connman_technology_remove_rfkill(unsigned int index,
1176                                         enum connman_service_type type)
1177 {
1178         struct connman_technology *technology;
1179         struct connman_rfkill *rfkill;
1180
1181         DBG("index %u", index);
1182
1183         technology = technology_find(type);
1184         if (technology == NULL)
1185                 return -ENXIO;
1186
1187         rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
1188         if (rfkill == NULL)
1189                 return -ENXIO;
1190
1191         g_hash_table_remove(technology->rfkill_list, &index);
1192
1193         technology_put(technology);
1194
1195         return 0;
1196 }
1197
1198 int __connman_technology_init(void)
1199 {
1200         DBG("");
1201
1202         connection = connman_dbus_get_connection();
1203
1204         global_offlinemode = connman_technology_load_offlinemode();
1205
1206         return 0;
1207 }
1208
1209 void __connman_technology_cleanup(void)
1210 {
1211         DBG("");
1212
1213         dbus_connection_unref(connection);
1214 }