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