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                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 308                         /* We enable ethernet by default */
 309                         technology->enable_persistent = TRUE;
 310                 else
 311                         technology->enable_persistent = FALSE;
 312                 return;
 313         }
 314
 315         identifier = g_strdup_printf("%s", get_name(technology->type));
 316         if (identifier == NULL)
 317                 goto done;
 318
 319         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 320         if (error == NULL)
 321                 technology->enable_persistent = enable;
 322         else {
 323                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 324                         technology->enable_persistent = TRUE;
 325                 else
 326                         technology->enable_persistent = FALSE;
 327                 g_clear_error(&error);
 328         }
 329 done:
 330         g_free(identifier);
 331
 332         g_key_file_free(keyfile);
 333
 334         return;
 335 }
 336
 337 static void save_state(struct connman_technology *technology)
 338 {
 339         GKeyFile *keyfile;
 340         gchar *identifier;
 341
 342         DBG("technology %p", technology);
 343
 344         keyfile = __connman_storage_load_global();
 345         if (keyfile == NULL)
 346                 keyfile = g_key_file_new();
 347
 348         identifier = g_strdup_printf("%s", get_name(technology->type));
 349         if (identifier == NULL)
 350                 goto done;
 351
 352         g_key_file_set_boolean(keyfile, identifier, "Enable",
 353                                 technology->enable_persistent);
 354
 355 done:
 356         g_free(identifier);
 357
 358         __connman_storage_save_global(keyfile);
 359
 360         g_key_file_free(keyfile);
 361
 362         return;
 363 }
 364
 365 connman_bool_t __connman_technology_get_offlinemode(void)
 366 {
 367         return global_offlinemode;
 368 }
 369
 370 static void connman_technology_save_offlinemode()
 371 {
 372         GKeyFile *keyfile;
 373
 374         keyfile = __connman_storage_load_global();
 375         if (keyfile == NULL)
 376                 keyfile = g_key_file_new();
 377
 378         g_key_file_set_boolean(keyfile, "global",
 379                                         "OfflineMode", global_offlinemode);
 380
 381         __connman_storage_save_global(keyfile);
 382
 383         g_key_file_free(keyfile);
 384
 385         return;
 386 }
 387
 388 static connman_bool_t connman_technology_load_offlinemode()
 389 {
 390         GKeyFile *keyfile;
 391         GError *error = NULL;
 392         connman_bool_t offlinemode;
 393
 394         /* If there is a error, we enable offlinemode */
 395         keyfile = __connman_storage_load_global();
 396         if (keyfile == NULL)
 397                 return FALSE;
 398
 399         offlinemode = g_key_file_get_boolean(keyfile, "global",
 400                                                 "OfflineMode", &error);
 401         if (error != NULL) {
 402                 offlinemode = FALSE;
 403                 g_clear_error(&error);
 404         }
 405
 406         g_key_file_free(keyfile);
 407
 408         return offlinemode;
 409 }
 410
 411 static void append_properties(DBusMessageIter *iter,
 412                 struct connman_technology *technology)
 413 {
 414         DBusMessageIter dict;
 415         const char *str;
 416         connman_bool_t powered;
 417
 418         connman_dbus_dict_open(iter, &dict);
 419
 420         str = get_name(technology->type);
 421         if (str != NULL)
 422                 connman_dbus_dict_append_basic(&dict, "Name",
 423                                                 DBUS_TYPE_STRING, &str);
 424
 425         str = __connman_service_type2string(technology->type);
 426         if (str != NULL)
 427                 connman_dbus_dict_append_basic(&dict, "Type",
 428                                                 DBUS_TYPE_STRING, &str);
 429
 430         __sync_synchronize();
 431         if (technology->enabled > 0)
 432                 powered = TRUE;
 433         else
 434                 powered = FALSE;
 435         connman_dbus_dict_append_basic(&dict, "Powered",
 436                                         DBUS_TYPE_BOOLEAN, &powered);
 437
 438         connman_dbus_dict_append_basic(&dict, "Connected",
 439                                         DBUS_TYPE_BOOLEAN,
 440                                         &technology->connected);
 441
 442         connman_dbus_dict_append_basic(&dict, "Tethering",
 443                                         DBUS_TYPE_BOOLEAN,
 444                                         &technology->tethering);
 445
 446         if (technology->tethering_ident != NULL)
 447                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 448                                                 DBUS_TYPE_STRING,
 449                                                 &technology->tethering_ident);
 450
 451         if (technology->tethering_passphrase != NULL)
 452                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 453                                                 DBUS_TYPE_STRING,
 454                                                 &technology->tethering_passphrase);
 455
 456         connman_dbus_dict_close(iter, &dict);
 457 }
 458
 459 static void technology_added_signal(struct connman_technology *technology)
 460 {
 461         DBusMessage *signal;
 462         DBusMessageIter iter;
 463
 464         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 465                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 466         if (signal == NULL)
 467                 return;
 468
 469         dbus_message_iter_init_append(signal, &iter);
 470         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 471                                                         &technology->path);
 472         append_properties(&iter, technology);
 473
 474         dbus_connection_send(connection, signal, NULL);
 475         dbus_message_unref(signal);
 476 }
 477
 478 static void technology_removed_signal(struct connman_technology *technology)
 479 {
 480         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 481                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 482                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 483                         DBUS_TYPE_INVALID);
 484 }
 485
 486 static DBusMessage *get_properties(DBusConnection *conn,
 487                                         DBusMessage *message, void *user_data)
 488 {
 489         struct connman_technology *technology = user_data;
 490         DBusMessage *reply;
 491         DBusMessageIter iter;
 492
 493         reply = dbus_message_new_method_return(message);
 494         if (reply == NULL)
 495                 return NULL;
 496
 497         dbus_message_iter_init_append(reply, &iter);
 498         append_properties(&iter, technology);
 499
 500         return reply;
 501 }
 502
 503 void __connman_technology_list_struct(DBusMessageIter *array)
 504 {
 505         GSList *list;
 506         DBusMessageIter entry;
 507
 508         for (list = technology_list; list; list = list->next) {
 509                 struct connman_technology *technology = list->data;
 510
 511                 if (technology->path == NULL)
 512                         continue;
 513
 514                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 515                                 NULL, &entry);
 516                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 517                                 &technology->path);
 518                 append_properties(&entry, technology);
 519                 dbus_message_iter_close_container(array, &entry);
 520         }
 521 }
 522
 523 static gboolean technology_pending_reply(gpointer user_data)
 524 {
 525         struct connman_technology *technology = user_data;
 526         DBusMessage *reply;
 527
 528         /* Power request timedout, send ETIMEDOUT. */
 529         if (technology->pending_reply != NULL) {
 530                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 531                 if (reply != NULL)
 532                         g_dbus_send_message(connection, reply);
 533
 534                 dbus_message_unref(technology->pending_reply);
 535                 technology->pending_reply = NULL;
 536                 technology->pending_timeout = 0;
 537         }
 538
 539         return FALSE;
 540 }
 541
 542 static int technology_enable(struct connman_technology *technology,
 543                 DBusMessage *msg)
 544 {
 545         GSList *list;
 546         int err = 0;
 547         int ret = -ENODEV;
 548         DBusMessage *reply;
 549
 550         DBG("technology %p enable", technology);
 551
 552         __sync_synchronize();
 553         if (technology->enabled > 0) {
 554                 err = -EALREADY;
 555                 goto done;
 556         }
 557
 558         if (technology->pending_reply != NULL) {
 559                 err = -EBUSY;
 560                 goto done;
 561         }
 562
 563         if (msg != NULL) {
 564                 /*
 565                  * This is a bit of a trick. When msg is not NULL it means
 566                  * thats technology_enable was invoked from the manager API.
 567                  * Hence we save the state here.
 568                  */
 569                 technology->enable_persistent = TRUE;
 570                 save_state(technology);
 571         }
 572
 573         __connman_rfkill_block(technology->type, FALSE);
 574
 575         /*
 576          * An empty device list means that devices in the technology
 577          * were rfkill blocked. The unblock above will enable the devs.
 578          */
 579         if (technology->device_list == NULL) {
 580                 ret = 0;
 581                 goto done;
 582         }
 583
 584         for (list = technology->device_list; list; list = list->next) {
 585                 struct connman_device *device = list->data;
 586
 587                 err = __connman_device_enable(device);
 588                 /*
 589                  * err = 0 : Device was enabled right away.
 590                  * If atleast one device gets enabled, we consider
 591                  * the technology to be enabled.
 592                  */
 593                 if (err == 0)
 594                         ret = 0;
 595         }
 596
 597 done:
 598         if (ret == 0) {
 599                 if (msg != NULL)
 600                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 601                 return ret;
 602         }
 603
 604         if (msg != NULL) {
 605                 if (err == -EINPROGRESS) {
 606                         technology->pending_reply = dbus_message_ref(msg);
 607                         technology->pending_timeout = g_timeout_add_seconds(10,
 608                                         technology_pending_reply, technology);
 609                 } else {
 610                         reply = __connman_error_failed(msg, -err);
 611                         if (reply != NULL)
 612                                 g_dbus_send_message(connection, reply);
 613                 }
 614         }
 615
 616         return err;
 617 }
 618
 619 static int technology_disable(struct connman_technology *technology,
 620                 DBusMessage *msg)
 621 {
 622         GSList *list;
 623         int err = 0;
 624         int ret = -ENODEV;
 625         DBusMessage *reply;
 626
 627         DBG("technology %p disable", technology);
 628
 629         __sync_synchronize();
 630         if (technology->enabled == 0) {
 631                 err = -EALREADY;
 632                 goto done;
 633         }
 634
 635         if (technology->pending_reply != NULL) {
 636                 err = -EBUSY;
 637                 goto done;
 638         }
 639
 640         if (technology->tethering == TRUE)
 641                 set_tethering(technology, FALSE);
 642
 643         if (msg != NULL) {
 644                 technology->enable_persistent = FALSE;
 645                 save_state(technology);
 646         }
 647
 648         __connman_rfkill_block(technology->type, TRUE);
 649
 650         for (list = technology->device_list; list; list = list->next) {
 651                 struct connman_device *device = list->data;
 652
 653                 err = __connman_device_disable(device);
 654                 if (err == 0)
 655                         ret = 0;
 656         }
 657
 658 done:
 659         if (ret == 0) {
 660                 if (msg != NULL)
 661                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 662                 return ret;
 663         }
 664
 665         if (msg != NULL) {
 666                 if (err == -EINPROGRESS) {
 667                         technology->pending_reply = dbus_message_ref(msg);
 668                         technology->pending_timeout = g_timeout_add_seconds(10,
 669                                         technology_pending_reply, technology);
 670                 } else {
 671                         reply = __connman_error_failed(msg, -err);
 672                         if (reply != NULL)
 673                                 g_dbus_send_message(connection, reply);
 674                 }
 675         }
 676
 677         return err;
 678 }
 679
 680 static DBusMessage *set_property(DBusConnection *conn,
 681                                         DBusMessage *msg, void *data)
 682 {
 683         struct connman_technology *technology = data;
 684         DBusMessageIter iter, value;
 685         const char *name;
 686         int type;
 687
 688         DBG("conn %p", conn);
 689
 690         if (dbus_message_iter_init(msg, &iter) == FALSE)
 691                 return __connman_error_invalid_arguments(msg);
 692
 693         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 694                 return __connman_error_invalid_arguments(msg);
 695
 696         dbus_message_iter_get_basic(&iter, &name);
 697         dbus_message_iter_next(&iter);
 698
 699         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 700                 return __connman_error_invalid_arguments(msg);
 701
 702         dbus_message_iter_recurse(&iter, &value);
 703
 704         type = dbus_message_iter_get_arg_type(&value);
 705
 706         DBG("property %s", name);
 707
 708         if (g_str_equal(name, "Tethering") == TRUE) {
 709                 int err;
 710                 connman_bool_t tethering;
 711
 712                 if (type != DBUS_TYPE_BOOLEAN)
 713                         return __connman_error_invalid_arguments(msg);
 714
 715                 dbus_message_iter_get_basic(&value, &tethering);
 716
 717                 if (technology->tethering == tethering)
 718                         return __connman_error_in_progress(msg);
 719
 720                 err = set_tethering(technology, tethering);
 721                 if (err < 0)
 722                         return __connman_error_failed(msg, -err);
 723
 724         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 725                 const char *str;
 726
 727                 dbus_message_iter_get_basic(&value, &str);
 728
 729                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 730                         return __connman_error_not_supported(msg);
 731
 732                 technology->tethering_ident = g_strdup(str);
 733         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 734                 const char *str;
 735
 736                 dbus_message_iter_get_basic(&value, &str);
 737
 738                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 739                         return __connman_error_not_supported(msg);
 740
 741                 if (strlen(str) < 8)
 742                         return __connman_error_invalid_arguments(msg);
 743
 744                 technology->tethering_passphrase = g_strdup(str);
 745         } else if (g_str_equal(name, "Powered") == TRUE) {
 746                 connman_bool_t enable;
 747
 748                 if (type != DBUS_TYPE_BOOLEAN)
 749                         return __connman_error_invalid_arguments(msg);
 750
 751                 dbus_message_iter_get_basic(&value, &enable);
 752                 if (enable == TRUE)
 753                         technology_enable(technology, msg);
 754                 else
 755                         technology_disable(technology, msg);
 756
 757         } else
 758                 return __connman_error_invalid_property(msg);
 759
 760         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 761 }
 762
 763 static struct connman_technology *technology_find(enum connman_service_type type)
 764 {
 765         GSList *list;
 766
 767         DBG("type %d", type);
 768
 769         for (list = technology_list; list; list = list->next) {
 770                 struct connman_technology *technology = list->data;
 771
 772                 if (technology->type == type)
 773                         return technology;
 774         }
 775
 776         return NULL;
 777 }
 778
 779 static void reply_scan_pending(struct connman_technology *technology, int err)
 780 {
 781         DBusMessage *reply;
 782
 783         DBG("technology %p err %d", technology, err);
 784
 785         while (technology->scan_pending != NULL) {
 786                 DBusMessage *msg = technology->scan_pending->data;
 787
 788                 DBG("reply to %s", dbus_message_get_sender(msg));
 789
 790                 if (err == 0)
 791                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 792                 else
 793                         reply = __connman_error_failed(msg, -err);
 794                 g_dbus_send_message(connection, reply);
 795                 dbus_message_unref(msg);
 796
 797                 technology->scan_pending =
 798                         g_slist_delete_link(technology->scan_pending,
 799                                         technology->scan_pending);
 800         }
 801 }
 802
 803 void __connman_technology_scan_started(struct connman_device *device)
 804 {
 805         DBG("device %p", device);
 806 }
 807
 808 void __connman_technology_scan_stopped(struct connman_device *device)
 809 {
 810         int count = 0;
 811         struct connman_technology *technology;
 812         enum connman_service_type type;
 813         GSList *list;
 814
 815         type = __connman_device_get_service_type(device);
 816         technology = technology_find(type);
 817
 818         DBG("technology %p device %p", technology, device);
 819
 820         if (technology == NULL)
 821                 return;
 822
 823         for (list = technology->device_list; list != NULL; list = list->next) {
 824                 struct connman_device *other_device = list->data;
 825
 826                 if (device == other_device)
 827                         continue;
 828
 829                 if (__connman_device_get_service_type(other_device) != type)
 830                         continue;
 831
 832                 if (__connman_device_scanning(other_device))
 833                         count += 1;
 834         }
 835
 836         if (count == 0)
 837                 reply_scan_pending(technology, 0);
 838 }
 839
 840 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 841 {
 842         struct connman_technology *technology = data;
 843         int err;
 844
 845         DBG ("technology %p request from %s", technology,
 846                         dbus_message_get_sender(msg));
 847
 848         dbus_message_ref(msg);
 849         technology->scan_pending =
 850                 g_slist_prepend(technology->scan_pending, msg);
 851
 852         err = __connman_device_request_scan(technology->type);
 853         if (err < 0)
 854                 reply_scan_pending(technology, err);
 855
 856         return NULL;
 857 }
 858
 859 static GDBusMethodTable technology_methods[] = {
 860         { "GetProperties", "",   "a{sv}", get_properties },
 861         { "SetProperty",   "sv", "",      set_property   },
 862         { "Scan",          "",    "",     scan,
 863                                                 G_DBUS_METHOD_FLAG_ASYNC },
 864         { },
 865 };
 866
 867 static GDBusSignalTable technology_signals[] = {
 868         { "PropertyChanged", "sv" },
 869         { },
 870 };
 871
 872 static struct connman_technology *technology_get(enum connman_service_type type)
 873 {
 874         struct connman_technology *technology;
 875         struct connman_technology_driver *driver = NULL;
 876         const char *str;
 877         GSList *list;
 878         int err;
 879
 880         DBG("type %d", type);
 881
 882         str = __connman_service_type2string(type);
 883         if (str == NULL)
 884                 return NULL;
 885
 886         technology = technology_find(type);
 887         if (technology != NULL) {
 888                 __sync_fetch_and_add(&technology->refcount, 1);
 889                 return technology;
 890         }
 891
 892         /* First check if we have a driver for this technology type */
 893         for (list = driver_list; list; list = list->next) {
 894                 driver = list->data;
 895
 896                 if (driver->type == type)
 897                         break;
 898                 else
 899                         driver = NULL;
 900         }
 901
 902         if (driver == NULL) {
 903                 DBG("No matching driver found for %s.",
 904                                 __connman_service_type2string(type));
 905                 return NULL;
 906         }
 907
 908         technology = g_try_new0(struct connman_technology, 1);
 909         if (technology == NULL)
 910                 return NULL;
 911
 912         technology->refcount = 1;
 913
 914         technology->type = type;
 915         technology->path = g_strdup_printf("%s/technology/%s",
 916                                                         CONNMAN_PATH, str);
 917
 918         technology->device_list = NULL;
 919
 920         technology->pending_reply = NULL;
 921
 922         load_state(technology);
 923
 924         if (g_dbus_register_interface(connection, technology->path,
 925                                         CONNMAN_TECHNOLOGY_INTERFACE,
 926                                         technology_methods, technology_signals,
 927                                         NULL, technology, NULL) == FALSE) {
 928                 connman_error("Failed to register %s", technology->path);
 929                 g_free(technology);
 930                 return NULL;
 931         }
 932
 933         technology_list = g_slist_append(technology_list, technology);
 934
 935         technology_added_signal(technology);
 936
 937         technology->driver = driver;
 938         err = driver->probe(technology);
 939         if (err != 0)
 940                 DBG("Driver probe failed for technology %p", technology);
 941
 942         DBG("technology %p", technology);
 943
 944         return technology;
 945 }
 946
 947 static void technology_put(struct connman_technology *technology)
 948 {
 949         DBG("technology %p", technology);
 950
 951         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
 952                 return;
 953
 954         reply_scan_pending(technology, -EINTR);
 955
 956         if (technology->driver) {
 957                 technology->driver->remove(technology);
 958                 technology->driver = NULL;
 959         }
 960
 961         technology_list = g_slist_remove(technology_list, technology);
 962
 963         technology_removed_signal(technology);
 964
 965         g_dbus_unregister_interface(connection, technology->path,
 966                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 967
 968         g_slist_free(technology->device_list);
 969
 970         g_free(technology->path);
 971         g_free(technology->regdom);
 972         g_free(technology);
 973 }
 974
 975 void __connman_technology_add_interface(enum connman_service_type type,
 976                                 int index, const char *name, const char *ident)
 977 {
 978         struct connman_technology *technology;
 979
 980         switch (type) {
 981         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 982         case CONNMAN_SERVICE_TYPE_SYSTEM:
 983                 return;
 984         case CONNMAN_SERVICE_TYPE_ETHERNET:
 985         case CONNMAN_SERVICE_TYPE_WIFI:
 986         case CONNMAN_SERVICE_TYPE_WIMAX:
 987         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 988         case CONNMAN_SERVICE_TYPE_CELLULAR:
 989         case CONNMAN_SERVICE_TYPE_GPS:
 990         case CONNMAN_SERVICE_TYPE_VPN:
 991         case CONNMAN_SERVICE_TYPE_GADGET:
 992                 break;
 993         }
 994
 995         connman_info("Adding interface %s [ %s ]", name,
 996                                 __connman_service_type2string(type));
 997
 998         technology = technology_find(type);
 999
1000         if (technology == NULL || technology->driver == NULL
1001                         || technology->driver->add_interface == NULL)
1002                 return;
1003
1004         technology->driver->add_interface(technology,
1005                                         index, name, ident);
1006 }
1007
1008 void __connman_technology_remove_interface(enum connman_service_type type,
1009                                 int index, const char *name, const char *ident)
1010 {
1011         struct connman_technology *technology;
1012
1013         switch (type) {
1014         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1015         case CONNMAN_SERVICE_TYPE_SYSTEM:
1016                 return;
1017         case CONNMAN_SERVICE_TYPE_ETHERNET:
1018         case CONNMAN_SERVICE_TYPE_WIFI:
1019         case CONNMAN_SERVICE_TYPE_WIMAX:
1020         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1021         case CONNMAN_SERVICE_TYPE_CELLULAR:
1022         case CONNMAN_SERVICE_TYPE_GPS:
1023         case CONNMAN_SERVICE_TYPE_VPN:
1024         case CONNMAN_SERVICE_TYPE_GADGET:
1025                 break;
1026         }
1027
1028         connman_info("Remove interface %s [ %s ]", name,
1029                                 __connman_service_type2string(type));
1030
1031         technology = technology_find(type);
1032
1033         if (technology == NULL || technology->driver == NULL)
1034                 return;
1035
1036         if (technology->driver->remove_interface)
1037                 technology->driver->remove_interface(technology, index);
1038 }
1039
1040 int __connman_technology_add_device(struct connman_device *device)
1041 {
1042         struct connman_technology *technology;
1043         enum connman_service_type type;
1044
1045         DBG("device %p", device);
1046
1047         type = __connman_device_get_service_type(device);
1048
1049         technology = technology_get(type);
1050         if (technology == NULL) {
1051                 /*
1052                  * Since no driver can be found for this device at the moment we
1053                  * add it to the techless device list.
1054                 */
1055                 techless_device_list = g_slist_prepend(techless_device_list,
1056                                                                 device);
1057
1058                 return -ENXIO;
1059         }
1060
1061         if (technology->enable_persistent && !global_offlinemode) {
1062                 int err = __connman_device_enable(device);
1063                 /*
1064                  * connman_technology_add_device() calls __connman_device_enable()
1065                  * but since the device is already enabled, the calls does not
1066                  * propagate through to connman_technology_enabled via
1067                  * connman_device_set_powered.
1068                  */
1069                 if (err == -EALREADY)
1070                         __connman_technology_enabled(type);
1071         }
1072         /* if technology persistent state is offline */
1073         if (!technology->enable_persistent)
1074                 __connman_device_disable(device);
1075
1076         technology->device_list = g_slist_append(technology->device_list,
1077                                                                 device);
1078
1079         return 0;
1080 }
1081
1082 int __connman_technology_remove_device(struct connman_device *device)
1083 {
1084         struct connman_technology *technology;
1085         enum connman_service_type type;
1086
1087         DBG("device %p", device);
1088
1089         type = __connman_device_get_service_type(device);
1090
1091         technology = technology_find(type);
1092         if (technology == NULL) {
1093                 techless_device_list = g_slist_remove(techless_device_list,
1094                                                                 device);
1095                 return -ENXIO;
1096         }
1097
1098         if (__connman_device_scanning(device))
1099                 __connman_technology_scan_stopped(device);
1100
1101         technology->device_list = g_slist_remove(technology->device_list,
1102                                                                 device);
1103         technology_put(technology);
1104
1105         return 0;
1106 }
1107
1108 static void powered_changed(struct connman_technology *technology)
1109 {
1110         connman_bool_t powered;
1111
1112         __sync_synchronize();
1113         if (technology->enabled >0)
1114                 powered = TRUE;
1115         else
1116                 powered = FALSE;
1117
1118         connman_dbus_property_changed_basic(technology->path,
1119                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1120                         DBUS_TYPE_BOOLEAN, &powered);
1121 }
1122
1123 int __connman_technology_enabled(enum connman_service_type type)
1124 {
1125         struct connman_technology *technology;
1126
1127         technology = technology_find(type);
1128         if (technology == NULL)
1129                 return -ENXIO;
1130
1131         if (__sync_fetch_and_add(&technology->enabled, 1) == 0)
1132                 powered_changed(technology);
1133
1134         if (technology->pending_reply != NULL) {
1135                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1136                 dbus_message_unref(technology->pending_reply);
1137                 g_source_remove(technology->pending_timeout);
1138                 technology->pending_reply = NULL;
1139                 technology->pending_timeout = 0;
1140         }
1141
1142         return 0;
1143 }
1144
1145 int __connman_technology_disabled(enum connman_service_type type)
1146 {
1147         struct connman_technology *technology;
1148
1149         technology = technology_find(type);
1150         if (technology == NULL)
1151                 return -ENXIO;
1152
1153         if (technology->pending_reply != NULL) {
1154                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1155                 dbus_message_unref(technology->pending_reply);
1156                 g_source_remove(technology->pending_timeout);
1157                 technology->pending_reply = NULL;
1158                 technology->pending_timeout = 0;
1159         }
1160
1161         if (__sync_fetch_and_sub(&technology->enabled, 1) == 1)
1162                 powered_changed(technology);
1163
1164         return 0;
1165 }
1166
1167 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1168 {
1169         GSList *list;
1170         int err = -EINVAL;
1171
1172         if (global_offlinemode == offlinemode)
1173                 return 0;
1174
1175         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1176
1177         /*
1178          * This is a bit tricky. When you set offlinemode, there is no
1179          * way to differentiate between attempting offline mode and
1180          * resuming offlinemode from last saved profile. We need that
1181          * information in rfkill_update, otherwise it falls back on the
1182          * technology's persistent state. Hence we set the offline mode here
1183          * but save it & call the notifier only if its successful.
1184          */
1185
1186         global_offlinemode = offlinemode;
1187
1188         /* Traverse technology list, enable/disable each technology. */
1189         for (list = technology_list; list; list = list->next) {
1190                 struct connman_technology *technology = list->data;
1191
1192                 if (offlinemode)
1193                         err = technology_disable(technology, NULL);
1194
1195                 if (!offlinemode && technology->enable_persistent)
1196                         err = technology_enable(technology, NULL);
1197         }
1198
1199         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1200                 connman_technology_save_offlinemode();
1201                 __connman_notifier_offlinemode(offlinemode);
1202         } else
1203                 global_offlinemode = connman_technology_load_offlinemode();
1204
1205         return err;
1206 }
1207
1208 void __connman_technology_set_connected(enum connman_service_type type,
1209                 connman_bool_t connected)
1210 {
1211         struct connman_technology *technology;
1212
1213         technology = technology_find(type);
1214         if (technology == NULL)
1215                 return;
1216
1217         DBG("technology %p connected %d", technology, connected);
1218
1219         technology->connected = connected;
1220
1221         connman_dbus_property_changed_basic(technology->path,
1222                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1223                         DBUS_TYPE_BOOLEAN, &connected);
1224 }
1225
1226 int __connman_technology_add_rfkill(unsigned int index,
1227                                         enum connman_service_type type,
1228                                                 connman_bool_t softblock,
1229                                                 connman_bool_t hardblock)
1230 {
1231         struct connman_technology *technology;
1232         struct connman_rfkill *rfkill;
1233
1234         DBG("index %u type %d soft %u hard %u", index, type,
1235                                                         softblock, hardblock);
1236
1237         rfkill = g_hash_table_lookup(rfkill_list, &index);
1238         if (rfkill != NULL)
1239                 goto done;
1240
1241         rfkill = g_try_new0(struct connman_rfkill, 1);
1242         if (rfkill == NULL)
1243                 return -ENOMEM;
1244
1245         rfkill->index = index;
1246         rfkill->type = type;
1247         rfkill->softblock = softblock;
1248         rfkill->hardblock = hardblock;
1249
1250         g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
1251
1252 done:
1253         technology = technology_get(type);
1254         /* If there is no driver for this type, ignore it. */
1255         if (technology == NULL)
1256                 return -ENXIO;
1257
1258         if (hardblock) {
1259                 DBG("%s is switched off.", get_name(type));
1260                 return 0;
1261         }
1262
1263         /*
1264          * If Offline mode is on, we softblock the device if it isnt already.
1265          * If Offline mode is off, we rely on the persistent state of tech.
1266          */
1267         if (global_offlinemode) {
1268                 if (!softblock)
1269                         return __connman_rfkill_block(type, TRUE);
1270         } else {
1271                 if (technology->enable_persistent && softblock)
1272                         return __connman_rfkill_block(type, FALSE);
1273                 /* if technology persistent state is offline */
1274                 if (!technology->enable_persistent && !softblock)
1275                         return __connman_rfkill_block(type, TRUE);
1276         }
1277
1278         return 0;
1279 }
1280
1281 int __connman_technology_update_rfkill(unsigned int index,
1282                                         enum connman_service_type type,
1283                                                 connman_bool_t softblock,
1284                                                 connman_bool_t hardblock)
1285 {
1286         struct connman_technology *technology;
1287         struct connman_rfkill *rfkill;
1288
1289         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1290
1291         rfkill = g_hash_table_lookup(rfkill_list, &index);
1292         if (rfkill == NULL)
1293                 return -ENXIO;
1294
1295         if (rfkill->softblock == softblock &&
1296                 rfkill->hardblock == hardblock)
1297                 return 0;
1298
1299         rfkill->softblock = softblock;
1300         rfkill->hardblock = hardblock;
1301
1302         if (hardblock) {
1303                 DBG("%s is switched off.", get_name(type));
1304                 return 0;
1305         }
1306
1307         technology = technology_find(type);
1308         /* If there is no driver for this type, ignore it. */
1309         if (technology == NULL)
1310                 return -ENXIO;
1311
1312         if (!global_offlinemode) {
1313                 if (technology->enable_persistent && softblock)
1314                         return __connman_rfkill_block(type, FALSE);
1315                 if (!technology->enable_persistent && !softblock)
1316                         return __connman_rfkill_block(type, TRUE);
1317         }
1318
1319         return 0;
1320 }
1321
1322 int __connman_technology_remove_rfkill(unsigned int index,
1323                                         enum connman_service_type type)
1324 {
1325         struct connman_technology *technology;
1326         struct connman_rfkill *rfkill;
1327
1328         DBG("index %u", index);
1329
1330         rfkill = g_hash_table_lookup(rfkill_list, &index);
1331         if (rfkill == NULL)
1332                 return -ENXIO;
1333
1334         g_hash_table_remove(rfkill_list, &index);
1335
1336         technology = technology_find(type);
1337         if (technology == NULL)
1338                 return -ENXIO;
1339
1340         technology_put(technology);
1341
1342         return 0;
1343 }
1344
1345 int __connman_technology_init(void)
1346 {
1347         DBG("");
1348
1349         connection = connman_dbus_get_connection();
1350
1351         rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
1352                                                         NULL, free_rfkill);
1353
1354         global_offlinemode = connman_technology_load_offlinemode();
1355
1356         return 0;
1357 }
1358
1359 void __connman_technology_cleanup(void)
1360 {
1361         DBG("");
1362
1363         g_hash_table_destroy(rfkill_list);
1364
1365         dbus_connection_unref(connection);
1366 }