src/technology.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <string.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GSList *technology_list = NULL;
  36
  37 /*
  38  * List of devices with no technology associated with them either because of
  39  * no compiled in support or the driver is not yet loaded.
  40 */
  41 static GSList *techless_device_list = NULL;
  42 static GHashTable *rfkill_list;
  43
  44 static connman_bool_t global_offlinemode;
  45
  46 struct connman_rfkill {
  47         unsigned int index;
  48         enum connman_service_type type;
  49         connman_bool_t softblock;
  50         connman_bool_t hardblock;
  51 };
  52
  53 struct connman_technology {
  54         int refcount;
  55         enum connman_service_type type;
  56         char *path;
  57         GSList *device_list;
  58         int enabled;
  59         char *regdom;
  60         connman_bool_t connected;
  61
  62         connman_bool_t tethering;
  63         char *tethering_ident;
  64         char *tethering_passphrase;
  65
  66         connman_bool_t enable_persistent; /* Save the tech state */
  67
  68         struct connman_technology_driver *driver;
  69         void *driver_data;
  70
  71         DBusMessage *pending_reply;
  72         guint pending_timeout;
  73
  74         GSList *scan_pending;
  75 };
  76
  77 static GSList *driver_list = NULL;
  78
  79 static gint compare_priority(gconstpointer a, gconstpointer b)
  80 {
  81         const struct connman_technology_driver *driver1 = a;
  82         const struct connman_technology_driver *driver2 = b;
  83
  84         return driver2->priority - driver1->priority;
  85 }
  86
  87 static void rfkill_check(gpointer key, gpointer value, gpointer user_data)
  88 {
  89         struct connman_rfkill *rfkill = value;
  90         enum connman_service_type type = GPOINTER_TO_INT(user_data);
  91
  92         /* Calling _technology_rfkill_add will update the tech. */
  93         if (rfkill->type == type)
  94                 __connman_technology_add_rfkill(rfkill->index, type,
  95                                 rfkill->softblock, rfkill->hardblock);
  96 }
  97
  98 /**
  99  * connman_technology_driver_register:
 100  * @driver: Technology driver definition
 101  *
 102  * Register a new technology driver
 103  *
 104  * Returns: %0 on success
 105  */
 106 int connman_technology_driver_register(struct connman_technology_driver *driver)
 107 {
 108         GSList *list;
 109         struct connman_device *device;
 110         enum connman_service_type type;
 111
 112         DBG("Registering %s driver", driver->name);
 113
 114         driver_list = g_slist_insert_sorted(driver_list, driver,
 115                                                         compare_priority);
 116
 117         if (techless_device_list == NULL)
 118                 goto check_rfkill;
 119
 120         /*
 121          * Check for technology less devices if this driver
 122          * can service any of them.
 123         */
 124         for (list = techless_device_list; list; list = list->next) {
 125                 device = list->data;
 126
 127                 type = __connman_device_get_service_type(device);
 128                 if (type != driver->type)
 129                         continue;
 130
 131                 techless_device_list = g_slist_remove(techless_device_list,
 132                                                                 device);
 133
 134                 __connman_technology_add_device(device);
 135         }
 136
 137 check_rfkill:
 138         /* Check for orphaned rfkill switches. */
 139         g_hash_table_foreach(rfkill_list, rfkill_check,
 140                                         GINT_TO_POINTER(driver->type));
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * connman_technology_driver_unregister:
 147  * @driver: Technology driver definition
 148  *
 149  * Remove a previously registered technology driver
 150  */
 151 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 152 {
 153         GSList *list;
 154         struct connman_technology *technology;
 155
 156         DBG("Unregistering driver %p name %s", driver, driver->name);
 157
 158         for (list = technology_list; list; list = list->next) {
 159                 technology = list->data;
 160
 161                 if (technology->driver == NULL)
 162                         continue;
 163
 164                 if (technology->type == driver->type) {
 165                         technology->driver->remove(technology);
 166                         technology->driver = NULL;
 167                 }
 168         }
 169
 170         driver_list = g_slist_remove(driver_list, driver);
 171 }
 172
 173 static void tethering_changed(struct connman_technology *technology)
 174 {
 175         connman_bool_t tethering = technology->tethering;
 176
 177         connman_dbus_property_changed_basic(technology->path,
 178                                 CONNMAN_TECHNOLOGY_INTERFACE, "Tethering",
 179                                                 DBUS_TYPE_BOOLEAN, &tethering);
 180 }
 181
 182 void connman_technology_tethering_notify(struct connman_technology *technology,
 183                                                         connman_bool_t enabled)
 184 {
 185         GSList *list;
 186
 187         DBG("technology %p enabled %u", technology, enabled);
 188
 189         if (technology->tethering == enabled)
 190                 return;
 191
 192         technology->tethering = enabled;
 193
 194         tethering_changed(technology);
 195
 196         if (enabled == TRUE)
 197                 __connman_tethering_set_enabled();
 198         else {
 199                 for (list = technology_list; list; list = list->next) {
 200                         struct connman_technology *other_tech = list->data;
 201                         if (other_tech->tethering == TRUE)
 202                                 break;
 203                 }
 204                 if (list == NULL)
 205                         __connman_tethering_set_disabled();
 206         }
 207 }
 208
 209 static int set_tethering(struct connman_technology *technology,
 210                                 connman_bool_t enabled)
 211 {
 212         const char *ident, *passphrase, *bridge;
 213
 214         ident = technology->tethering_ident;
 215         passphrase = technology->tethering_passphrase;
 216
 217         if (technology->driver == NULL ||
 218                         technology->driver->set_tethering == NULL)
 219                 return -EOPNOTSUPP;
 220
 221         bridge = __connman_tethering_get_bridge();
 222         if (bridge == NULL)
 223                 return -EOPNOTSUPP;
 224
 225         if (technology->type == CONNMAN_SERVICE_TYPE_WIFI &&
 226             (ident == NULL || passphrase == NULL))
 227                 return -EINVAL;
 228
 229         return technology->driver->set_tethering(technology, ident, passphrase,
 230                                                         bridge, enabled);
 231 }
 232
 233 void connman_technology_regdom_notify(struct connman_technology *technology,
 234                                                         const char *alpha2)
 235 {
 236         DBG("");
 237
 238         if (alpha2 == NULL)
 239                 connman_error("Failed to set regulatory domain");
 240         else
 241                 DBG("Regulatory domain set to %s", alpha2);
 242
 243         g_free(technology->regdom);
 244         technology->regdom = g_strdup(alpha2);
 245 }
 246
 247 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 save_state(struct connman_technology *technology)
 296 {
 297         GKeyFile *keyfile;
 298         gchar *identifier;
 299
 300         DBG("technology %p", technology);
 301
 302         keyfile = __connman_storage_load_global();
 303         if (keyfile == NULL)
 304                 keyfile = g_key_file_new();
 305
 306         identifier = g_strdup_printf("%s", get_name(technology->type));
 307         if (identifier == NULL)
 308                 goto done;
 309
 310         g_key_file_set_boolean(keyfile, identifier, "Enable",
 311                                 technology->enable_persistent);
 312
 313 done:
 314         g_free(identifier);
 315
 316         __connman_storage_save_global(keyfile);
 317
 318         g_key_file_free(keyfile);
 319
 320         return;
 321 }
 322
 323 static void load_state(struct connman_technology *technology)
 324 {
 325         GKeyFile *keyfile;
 326         gchar *identifier;
 327         GError *error = NULL;
 328         connman_bool_t enable;
 329
 330         DBG("technology %p", technology);
 331
 332         keyfile = __connman_storage_load_global();
 333         /* Fallback on disabling technology if file not found. */
 334         if (keyfile == NULL) {
 335                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 336                         /* We enable ethernet by default */
 337                         technology->enable_persistent = TRUE;
 338                 else
 339                         technology->enable_persistent = FALSE;
 340                 return;
 341         }
 342
 343         identifier = g_strdup_printf("%s", get_name(technology->type));
 344         if (identifier == NULL)
 345                 goto done;
 346
 347         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 348         if (error == NULL)
 349                 technology->enable_persistent = enable;
 350         else {
 351                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 352                         technology->enable_persistent = TRUE;
 353                 else
 354                         technology->enable_persistent = FALSE;
 355
 356                 save_state(technology);
 357                 g_clear_error(&error);
 358         }
 359 done:
 360         g_free(identifier);
 361
 362         g_key_file_free(keyfile);
 363
 364         return;
 365 }
 366
 367 connman_bool_t __connman_technology_get_offlinemode(void)
 368 {
 369         return global_offlinemode;
 370 }
 371
 372 static void connman_technology_save_offlinemode()
 373 {
 374         GKeyFile *keyfile;
 375
 376         keyfile = __connman_storage_load_global();
 377         if (keyfile == NULL)
 378                 keyfile = g_key_file_new();
 379
 380         g_key_file_set_boolean(keyfile, "global",
 381                                         "OfflineMode", global_offlinemode);
 382
 383         __connman_storage_save_global(keyfile);
 384
 385         g_key_file_free(keyfile);
 386
 387         return;
 388 }
 389
 390 static connman_bool_t connman_technology_load_offlinemode()
 391 {
 392         GKeyFile *keyfile;
 393         GError *error = NULL;
 394         connman_bool_t offlinemode;
 395
 396         /* If there is a error, we enable offlinemode */
 397         keyfile = __connman_storage_load_global();
 398         if (keyfile == NULL)
 399                 return FALSE;
 400
 401         offlinemode = g_key_file_get_boolean(keyfile, "global",
 402                                                 "OfflineMode", &error);
 403         if (error != NULL) {
 404                 offlinemode = FALSE;
 405                 g_clear_error(&error);
 406         }
 407
 408         g_key_file_free(keyfile);
 409
 410         return offlinemode;
 411 }
 412
 413 static void append_properties(DBusMessageIter *iter,
 414                 struct connman_technology *technology)
 415 {
 416         DBusMessageIter dict;
 417         const char *str;
 418         connman_bool_t powered;
 419
 420         connman_dbus_dict_open(iter, &dict);
 421
 422         str = get_name(technology->type);
 423         if (str != NULL)
 424                 connman_dbus_dict_append_basic(&dict, "Name",
 425                                                 DBUS_TYPE_STRING, &str);
 426
 427         str = __connman_service_type2string(technology->type);
 428         if (str != NULL)
 429                 connman_dbus_dict_append_basic(&dict, "Type",
 430                                                 DBUS_TYPE_STRING, &str);
 431
 432         __sync_synchronize();
 433         if (technology->enabled > 0)
 434                 powered = TRUE;
 435         else
 436                 powered = FALSE;
 437         connman_dbus_dict_append_basic(&dict, "Powered",
 438                                         DBUS_TYPE_BOOLEAN, &powered);
 439
 440         connman_dbus_dict_append_basic(&dict, "Connected",
 441                                         DBUS_TYPE_BOOLEAN,
 442                                         &technology->connected);
 443
 444         connman_dbus_dict_append_basic(&dict, "Tethering",
 445                                         DBUS_TYPE_BOOLEAN,
 446                                         &technology->tethering);
 447
 448         if (technology->tethering_ident != NULL)
 449                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 450                                                 DBUS_TYPE_STRING,
 451                                                 &technology->tethering_ident);
 452
 453         if (technology->tethering_passphrase != NULL)
 454                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 455                                                 DBUS_TYPE_STRING,
 456                                                 &technology->tethering_passphrase);
 457
 458         connman_dbus_dict_close(iter, &dict);
 459 }
 460
 461 static void technology_added_signal(struct connman_technology *technology)
 462 {
 463         DBusMessage *signal;
 464         DBusMessageIter iter;
 465
 466         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 467                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 468         if (signal == NULL)
 469                 return;
 470
 471         dbus_message_iter_init_append(signal, &iter);
 472         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 473                                                         &technology->path);
 474         append_properties(&iter, technology);
 475
 476         dbus_connection_send(connection, signal, NULL);
 477         dbus_message_unref(signal);
 478 }
 479
 480 static void technology_removed_signal(struct connman_technology *technology)
 481 {
 482         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 483                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 484                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 485                         DBUS_TYPE_INVALID);
 486 }
 487
 488 static DBusMessage *get_properties(DBusConnection *conn,
 489                                         DBusMessage *message, void *user_data)
 490 {
 491         struct connman_technology *technology = user_data;
 492         DBusMessage *reply;
 493         DBusMessageIter iter;
 494
 495         reply = dbus_message_new_method_return(message);
 496         if (reply == NULL)
 497                 return NULL;
 498
 499         dbus_message_iter_init_append(reply, &iter);
 500         append_properties(&iter, technology);
 501
 502         return reply;
 503 }
 504
 505 void __connman_technology_list_struct(DBusMessageIter *array)
 506 {
 507         GSList *list;
 508         DBusMessageIter entry;
 509
 510         for (list = technology_list; list; list = list->next) {
 511                 struct connman_technology *technology = list->data;
 512
 513                 if (technology->path == NULL)
 514                         continue;
 515
 516                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 517                                 NULL, &entry);
 518                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 519                                 &technology->path);
 520                 append_properties(&entry, technology);
 521                 dbus_message_iter_close_container(array, &entry);
 522         }
 523 }
 524
 525 static gboolean technology_pending_reply(gpointer user_data)
 526 {
 527         struct connman_technology *technology = user_data;
 528         DBusMessage *reply;
 529
 530         /* Power request timedout, send ETIMEDOUT. */
 531         if (technology->pending_reply != NULL) {
 532                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 533                 if (reply != NULL)
 534                         g_dbus_send_message(connection, reply);
 535
 536                 dbus_message_unref(technology->pending_reply);
 537                 technology->pending_reply = NULL;
 538                 technology->pending_timeout = 0;
 539         }
 540
 541         return FALSE;
 542 }
 543
 544 static int technology_enable(struct connman_technology *technology,
 545                 DBusMessage *msg)
 546 {
 547         GSList *list;
 548         int err = 0;
 549         int ret = -ENODEV;
 550         DBusMessage *reply;
 551
 552         DBG("technology %p enable", technology);
 553
 554         __sync_synchronize();
 555         if (technology->enabled > 0) {
 556                 err = -EALREADY;
 557                 goto done;
 558         }
 559
 560         if (technology->pending_reply != NULL) {
 561                 err = -EBUSY;
 562                 goto done;
 563         }
 564
 565         if (msg != NULL) {
 566                 /*
 567                  * This is a bit of a trick. When msg is not NULL it means
 568                  * thats technology_enable was invoked from the manager API.
 569                  * Hence we save the state here.
 570                  */
 571                 technology->enable_persistent = TRUE;
 572                 save_state(technology);
 573         }
 574
 575         __connman_rfkill_block(technology->type, FALSE);
 576
 577         /*
 578          * An empty device list means that devices in the technology
 579          * were rfkill blocked. The unblock above will enable the devs.
 580          */
 581         if (technology->device_list == NULL) {
 582                 ret = 0;
 583                 goto done;
 584         }
 585
 586         for (list = technology->device_list; list; list = list->next) {
 587                 struct connman_device *device = list->data;
 588
 589                 err = __connman_device_enable(device);
 590                 /*
 591                  * err = 0 : Device was enabled right away.
 592                  * If atleast one device gets enabled, we consider
 593                  * the technology to be enabled.
 594                  */
 595                 if (err == 0)
 596                         ret = 0;
 597         }
 598
 599 done:
 600         if (ret == 0) {
 601                 if (msg != NULL)
 602                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 603                 return ret;
 604         }
 605
 606         if (msg != NULL) {
 607                 if (err == -EINPROGRESS) {
 608                         technology->pending_reply = dbus_message_ref(msg);
 609                         technology->pending_timeout = g_timeout_add_seconds(10,
 610                                         technology_pending_reply, technology);
 611                 } else {
 612                         reply = __connman_error_failed(msg, -err);
 613                         if (reply != NULL)
 614                                 g_dbus_send_message(connection, reply);
 615                 }
 616         }
 617
 618         return err;
 619 }
 620
 621 static int technology_disable(struct connman_technology *technology,
 622                 DBusMessage *msg)
 623 {
 624         GSList *list;
 625         int err = 0;
 626         int ret = -ENODEV;
 627         DBusMessage *reply;
 628
 629         DBG("technology %p disable", technology);
 630
 631         __sync_synchronize();
 632         if (technology->enabled == 0) {
 633                 err = -EALREADY;
 634                 goto done;
 635         }
 636
 637         if (technology->pending_reply != NULL) {
 638                 err = -EBUSY;
 639                 goto done;
 640         }
 641
 642         if (technology->tethering == TRUE)
 643                 set_tethering(technology, FALSE);
 644
 645         if (msg != NULL) {
 646                 technology->enable_persistent = FALSE;
 647                 save_state(technology);
 648         }
 649
 650         __connman_rfkill_block(technology->type, TRUE);
 651
 652         for (list = technology->device_list; list; list = list->next) {
 653                 struct connman_device *device = list->data;
 654
 655                 err = __connman_device_disable(device);
 656                 if (err == 0)
 657                         ret = 0;
 658         }
 659
 660 done:
 661         if (ret == 0) {
 662                 if (msg != NULL)
 663                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 664                 return ret;
 665         }
 666
 667         if (msg != NULL) {
 668                 if (err == -EINPROGRESS) {
 669                         technology->pending_reply = dbus_message_ref(msg);
 670                         technology->pending_timeout = g_timeout_add_seconds(10,
 671                                         technology_pending_reply, technology);
 672                 } else {
 673                         reply = __connman_error_failed(msg, -err);
 674                         if (reply != NULL)
 675                                 g_dbus_send_message(connection, reply);
 676                 }
 677         }
 678
 679         return err;
 680 }
 681
 682 static DBusMessage *set_property(DBusConnection *conn,
 683                                         DBusMessage *msg, void *data)
 684 {
 685         struct connman_technology *technology = data;
 686         DBusMessageIter iter, value;
 687         const char *name;
 688         int type;
 689
 690         DBG("conn %p", conn);
 691
 692         if (dbus_message_iter_init(msg, &iter) == FALSE)
 693                 return __connman_error_invalid_arguments(msg);
 694
 695         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 696                 return __connman_error_invalid_arguments(msg);
 697
 698         dbus_message_iter_get_basic(&iter, &name);
 699         dbus_message_iter_next(&iter);
 700
 701         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 702                 return __connman_error_invalid_arguments(msg);
 703
 704         dbus_message_iter_recurse(&iter, &value);
 705
 706         type = dbus_message_iter_get_arg_type(&value);
 707
 708         DBG("property %s", name);
 709
 710         if (g_str_equal(name, "Tethering") == TRUE) {
 711                 int err;
 712                 connman_bool_t tethering;
 713
 714                 if (type != DBUS_TYPE_BOOLEAN)
 715                         return __connman_error_invalid_arguments(msg);
 716
 717                 dbus_message_iter_get_basic(&value, &tethering);
 718
 719                 if (technology->tethering == tethering)
 720                         return __connman_error_in_progress(msg);
 721
 722                 err = set_tethering(technology, tethering);
 723                 if (err < 0)
 724                         return __connman_error_failed(msg, -err);
 725
 726         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 727                 const char *str;
 728
 729                 dbus_message_iter_get_basic(&value, &str);
 730
 731                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 732                         return __connman_error_not_supported(msg);
 733
 734                 technology->tethering_ident = g_strdup(str);
 735         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 736                 const char *str;
 737
 738                 dbus_message_iter_get_basic(&value, &str);
 739
 740                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 741                         return __connman_error_not_supported(msg);
 742
 743                 if (strlen(str) < 8)
 744                         return __connman_error_invalid_arguments(msg);
 745
 746                 technology->tethering_passphrase = g_strdup(str);
 747         } else if (g_str_equal(name, "Powered") == TRUE) {
 748                 connman_bool_t enable;
 749
 750                 if (type != DBUS_TYPE_BOOLEAN)
 751                         return __connman_error_invalid_arguments(msg);
 752
 753                 dbus_message_iter_get_basic(&value, &enable);
 754                 if (enable == TRUE)
 755                         technology_enable(technology, msg);
 756                 else
 757                         technology_disable(technology, msg);
 758
 759         } else
 760                 return __connman_error_invalid_property(msg);
 761
 762         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 763 }
 764
 765 static struct connman_technology *technology_find(enum connman_service_type type)
 766 {
 767         GSList *list;
 768
 769         DBG("type %d", type);
 770
 771         for (list = technology_list; list; list = list->next) {
 772                 struct connman_technology *technology = list->data;
 773
 774                 if (technology->type == type)
 775                         return technology;
 776         }
 777
 778         return NULL;
 779 }
 780
 781 static void reply_scan_pending(struct connman_technology *technology, int err)
 782 {
 783         DBusMessage *reply;
 784
 785         DBG("technology %p err %d", technology, err);
 786
 787         while (technology->scan_pending != NULL) {
 788                 DBusMessage *msg = technology->scan_pending->data;
 789
 790                 DBG("reply to %s", dbus_message_get_sender(msg));
 791
 792                 if (err == 0)
 793                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 794                 else
 795                         reply = __connman_error_failed(msg, -err);
 796                 g_dbus_send_message(connection, reply);
 797                 dbus_message_unref(msg);
 798
 799                 technology->scan_pending =
 800                         g_slist_delete_link(technology->scan_pending,
 801                                         technology->scan_pending);
 802         }
 803 }
 804
 805 void __connman_technology_scan_started(struct connman_device *device)
 806 {
 807         DBG("device %p", device);
 808 }
 809
 810 void __connman_technology_scan_stopped(struct connman_device *device)
 811 {
 812         int count = 0;
 813         struct connman_technology *technology;
 814         enum connman_service_type type;
 815         GSList *list;
 816
 817         type = __connman_device_get_service_type(device);
 818         technology = technology_find(type);
 819
 820         DBG("technology %p device %p", technology, device);
 821
 822         if (technology == NULL)
 823                 return;
 824
 825         for (list = technology->device_list; list != NULL; list = list->next) {
 826                 struct connman_device *other_device = list->data;
 827
 828                 if (device == other_device)
 829                         continue;
 830
 831                 if (__connman_device_get_service_type(other_device) != type)
 832                         continue;
 833
 834                 if (connman_device_get_scanning(other_device) == TRUE)
 835                         count += 1;
 836         }
 837
 838         if (count == 0)
 839                 reply_scan_pending(technology, 0);
 840 }
 841
 842 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 843 {
 844         struct connman_technology *technology = data;
 845         int err;
 846
 847         DBG ("technology %p request from %s", technology,
 848                         dbus_message_get_sender(msg));
 849
 850         dbus_message_ref(msg);
 851         technology->scan_pending =
 852                 g_slist_prepend(technology->scan_pending, msg);
 853
 854         err = __connman_device_request_scan(technology->type);
 855         if (err < 0)
 856                 reply_scan_pending(technology, err);
 857
 858         return NULL;
 859 }
 860
 861 static const GDBusMethodTable technology_methods[] = {
 862         { GDBUS_DEPRECATED_METHOD("GetProperties",
 863                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 864                         get_properties) },
 865         { GDBUS_METHOD("SetProperty",
 866                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 867                         NULL, set_property) },
 868         { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
 869         { },
 870 };
 871
 872 static const GDBusSignalTable technology_signals[] = {
 873         { GDBUS_SIGNAL("PropertyChanged",
 874                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 875         { },
 876 };
 877
 878 static struct connman_technology *technology_get(enum connman_service_type type)
 879 {
 880         struct connman_technology *technology;
 881         struct connman_technology_driver *driver = NULL;
 882         const char *str;
 883         GSList *list;
 884         int err;
 885
 886         DBG("type %d", type);
 887
 888         str = __connman_service_type2string(type);
 889         if (str == NULL)
 890                 return NULL;
 891
 892         technology = technology_find(type);
 893         if (technology != NULL) {
 894                 __sync_fetch_and_add(&technology->refcount, 1);
 895                 return technology;
 896         }
 897
 898         /* First check if we have a driver for this technology type */
 899         for (list = driver_list; list; list = list->next) {
 900                 driver = list->data;
 901
 902                 if (driver->type == type)
 903                         break;
 904                 else
 905                         driver = NULL;
 906         }
 907
 908         if (driver == NULL) {
 909                 DBG("No matching driver found for %s.",
 910                                 __connman_service_type2string(type));
 911                 return NULL;
 912         }
 913
 914         technology = g_try_new0(struct connman_technology, 1);
 915         if (technology == NULL)
 916                 return NULL;
 917
 918         technology->refcount = 1;
 919
 920         technology->type = type;
 921         technology->path = g_strdup_printf("%s/technology/%s",
 922                                                         CONNMAN_PATH, str);
 923
 924         technology->device_list = NULL;
 925
 926         technology->pending_reply = NULL;
 927
 928         load_state(technology);
 929
 930         if (g_dbus_register_interface(connection, technology->path,
 931                                         CONNMAN_TECHNOLOGY_INTERFACE,
 932                                         technology_methods, technology_signals,
 933                                         NULL, technology, NULL) == FALSE) {
 934                 connman_error("Failed to register %s", technology->path);
 935                 g_free(technology);
 936                 return NULL;
 937         }
 938
 939         technology_list = g_slist_append(technology_list, technology);
 940
 941         technology_added_signal(technology);
 942
 943         technology->driver = driver;
 944         err = driver->probe(technology);
 945         if (err != 0)
 946                 DBG("Driver probe failed for technology %p", technology);
 947
 948         DBG("technology %p", technology);
 949
 950         return technology;
 951 }
 952
 953 static void technology_put(struct connman_technology *technology)
 954 {
 955         DBG("technology %p", technology);
 956
 957         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
 958                 return;
 959
 960         reply_scan_pending(technology, -EINTR);
 961
 962         if (technology->driver) {
 963                 technology->driver->remove(technology);
 964                 technology->driver = NULL;
 965         }
 966
 967         technology_list = g_slist_remove(technology_list, technology);
 968
 969         technology_removed_signal(technology);
 970
 971         g_dbus_unregister_interface(connection, technology->path,
 972                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 973
 974         g_slist_free(technology->device_list);
 975
 976         g_free(technology->path);
 977         g_free(technology->regdom);
 978         g_free(technology);
 979 }
 980
 981 void __connman_technology_add_interface(enum connman_service_type type,
 982                                 int index, const char *name, const char *ident)
 983 {
 984         struct connman_technology *technology;
 985
 986         switch (type) {
 987         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 988         case CONNMAN_SERVICE_TYPE_SYSTEM:
 989                 return;
 990         case CONNMAN_SERVICE_TYPE_ETHERNET:
 991         case CONNMAN_SERVICE_TYPE_WIFI:
 992         case CONNMAN_SERVICE_TYPE_WIMAX:
 993         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 994         case CONNMAN_SERVICE_TYPE_CELLULAR:
 995         case CONNMAN_SERVICE_TYPE_GPS:
 996         case CONNMAN_SERVICE_TYPE_VPN:
 997         case CONNMAN_SERVICE_TYPE_GADGET:
 998                 break;
 999         }
1000
1001         connman_info("Adding interface %s [ %s ]", name,
1002                                 __connman_service_type2string(type));
1003
1004         technology = technology_find(type);
1005
1006         if (technology == NULL || technology->driver == NULL
1007                         || technology->driver->add_interface == NULL)
1008                 return;
1009
1010         technology->driver->add_interface(technology,
1011                                         index, name, ident);
1012 }
1013
1014 void __connman_technology_remove_interface(enum connman_service_type type,
1015                                 int index, const char *name, const char *ident)
1016 {
1017         struct connman_technology *technology;
1018
1019         switch (type) {
1020         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1021         case CONNMAN_SERVICE_TYPE_SYSTEM:
1022                 return;
1023         case CONNMAN_SERVICE_TYPE_ETHERNET:
1024         case CONNMAN_SERVICE_TYPE_WIFI:
1025         case CONNMAN_SERVICE_TYPE_WIMAX:
1026         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1027         case CONNMAN_SERVICE_TYPE_CELLULAR:
1028         case CONNMAN_SERVICE_TYPE_GPS:
1029         case CONNMAN_SERVICE_TYPE_VPN:
1030         case CONNMAN_SERVICE_TYPE_GADGET:
1031                 break;
1032         }
1033
1034         connman_info("Remove interface %s [ %s ]", name,
1035                                 __connman_service_type2string(type));
1036
1037         technology = technology_find(type);
1038
1039         if (technology == NULL || technology->driver == NULL)
1040                 return;
1041
1042         if (technology->driver->remove_interface)
1043                 technology->driver->remove_interface(technology, index);
1044 }
1045
1046 int __connman_technology_add_device(struct connman_device *device)
1047 {
1048         struct connman_technology *technology;
1049         enum connman_service_type type;
1050
1051         DBG("device %p", device);
1052
1053         type = __connman_device_get_service_type(device);
1054
1055         technology = technology_get(type);
1056         if (technology == NULL) {
1057                 /*
1058                  * Since no driver can be found for this device at the moment we
1059                  * add it to the techless device list.
1060                 */
1061                 techless_device_list = g_slist_prepend(techless_device_list,
1062                                                                 device);
1063
1064                 return -ENXIO;
1065         }
1066
1067         if (technology->enable_persistent && !global_offlinemode) {
1068                 int err = __connman_device_enable(device);
1069                 /*
1070                  * connman_technology_add_device() calls __connman_device_enable()
1071                  * but since the device is already enabled, the calls does not
1072                  * propagate through to connman_technology_enabled via
1073                  * connman_device_set_powered.
1074                  */
1075                 if (err == -EALREADY)
1076                         __connman_technology_enabled(type);
1077         }
1078         /* if technology persistent state is offline */
1079         if (!technology->enable_persistent)
1080                 __connman_device_disable(device);
1081
1082         technology->device_list = g_slist_append(technology->device_list,
1083                                                                 device);
1084
1085         return 0;
1086 }
1087
1088 int __connman_technology_remove_device(struct connman_device *device)
1089 {
1090         struct connman_technology *technology;
1091         enum connman_service_type type;
1092
1093         DBG("device %p", device);
1094
1095         type = __connman_device_get_service_type(device);
1096
1097         technology = technology_find(type);
1098         if (technology == NULL) {
1099                 techless_device_list = g_slist_remove(techless_device_list,
1100                                                                 device);
1101                 return -ENXIO;
1102         }
1103
1104         if (connman_device_get_scanning(device) == TRUE)
1105                 __connman_technology_scan_stopped(device);
1106
1107         technology->device_list = g_slist_remove(technology->device_list,
1108                                                                 device);
1109         technology_put(technology);
1110
1111         return 0;
1112 }
1113
1114 static void powered_changed(struct connman_technology *technology)
1115 {
1116         connman_bool_t powered;
1117
1118         __sync_synchronize();
1119         if (technology->enabled >0)
1120                 powered = TRUE;
1121         else
1122                 powered = FALSE;
1123
1124         connman_dbus_property_changed_basic(technology->path,
1125                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1126                         DBUS_TYPE_BOOLEAN, &powered);
1127 }
1128
1129 int __connman_technology_enabled(enum connman_service_type type)
1130 {
1131         struct connman_technology *technology;
1132
1133         technology = technology_find(type);
1134         if (technology == NULL)
1135                 return -ENXIO;
1136
1137         if (__sync_fetch_and_add(&technology->enabled, 1) == 0)
1138                 powered_changed(technology);
1139
1140         if (technology->pending_reply != NULL) {
1141                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1142                 dbus_message_unref(technology->pending_reply);
1143                 g_source_remove(technology->pending_timeout);
1144                 technology->pending_reply = NULL;
1145                 technology->pending_timeout = 0;
1146         }
1147
1148         return 0;
1149 }
1150
1151 int __connman_technology_disabled(enum connman_service_type type)
1152 {
1153         struct connman_technology *technology;
1154
1155         technology = technology_find(type);
1156         if (technology == NULL)
1157                 return -ENXIO;
1158
1159         if (technology->pending_reply != NULL) {
1160                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1161                 dbus_message_unref(technology->pending_reply);
1162                 g_source_remove(technology->pending_timeout);
1163                 technology->pending_reply = NULL;
1164                 technology->pending_timeout = 0;
1165         }
1166
1167         if (__sync_fetch_and_sub(&technology->enabled, 1) == 1)
1168                 powered_changed(technology);
1169
1170         return 0;
1171 }
1172
1173 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1174 {
1175         GSList *list;
1176         int err = -EINVAL;
1177
1178         if (global_offlinemode == offlinemode)
1179                 return 0;
1180
1181         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1182
1183         /*
1184          * This is a bit tricky. When you set offlinemode, there is no
1185          * way to differentiate between attempting offline mode and
1186          * resuming offlinemode from last saved profile. We need that
1187          * information in rfkill_update, otherwise it falls back on the
1188          * technology's persistent state. Hence we set the offline mode here
1189          * but save it & call the notifier only if its successful.
1190          */
1191
1192         global_offlinemode = offlinemode;
1193
1194         /* Traverse technology list, enable/disable each technology. */
1195         for (list = technology_list; list; list = list->next) {
1196                 struct connman_technology *technology = list->data;
1197
1198                 if (offlinemode)
1199                         err = technology_disable(technology, NULL);
1200
1201                 if (!offlinemode && technology->enable_persistent)
1202                         err = technology_enable(technology, NULL);
1203         }
1204
1205         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1206                 connman_technology_save_offlinemode();
1207                 __connman_notifier_offlinemode(offlinemode);
1208         } else
1209                 global_offlinemode = connman_technology_load_offlinemode();
1210
1211         return err;
1212 }
1213
1214 void __connman_technology_set_connected(enum connman_service_type type,
1215                 connman_bool_t connected)
1216 {
1217         struct connman_technology *technology;
1218
1219         technology = technology_find(type);
1220         if (technology == NULL)
1221                 return;
1222
1223         DBG("technology %p connected %d", technology, connected);
1224
1225         technology->connected = connected;
1226
1227         connman_dbus_property_changed_basic(technology->path,
1228                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1229                         DBUS_TYPE_BOOLEAN, &connected);
1230 }
1231
1232 int __connman_technology_add_rfkill(unsigned int index,
1233                                         enum connman_service_type type,
1234                                                 connman_bool_t softblock,
1235                                                 connman_bool_t hardblock)
1236 {
1237         struct connman_technology *technology;
1238         struct connman_rfkill *rfkill;
1239
1240         DBG("index %u type %d soft %u hard %u", index, type,
1241                                                         softblock, hardblock);
1242
1243         rfkill = g_hash_table_lookup(rfkill_list, &index);
1244         if (rfkill != NULL)
1245                 goto done;
1246
1247         rfkill = g_try_new0(struct connman_rfkill, 1);
1248         if (rfkill == NULL)
1249                 return -ENOMEM;
1250
1251         rfkill->index = index;
1252         rfkill->type = type;
1253         rfkill->softblock = softblock;
1254         rfkill->hardblock = hardblock;
1255
1256         g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
1257
1258 done:
1259         technology = technology_get(type);
1260         /* If there is no driver for this type, ignore it. */
1261         if (technology == NULL)
1262                 return -ENXIO;
1263
1264         if (hardblock) {
1265                 DBG("%s is switched off.", get_name(type));
1266                 return 0;
1267         }
1268
1269         /*
1270          * If Offline mode is on, we softblock the device if it isnt already.
1271          * If Offline mode is off, we rely on the persistent state of tech.
1272          */
1273         if (global_offlinemode) {
1274                 if (!softblock)
1275                         return __connman_rfkill_block(type, TRUE);
1276         } else {
1277                 if (technology->enable_persistent && softblock)
1278                         return __connman_rfkill_block(type, FALSE);
1279                 /* if technology persistent state is offline */
1280                 if (!technology->enable_persistent && !softblock)
1281                         return __connman_rfkill_block(type, TRUE);
1282         }
1283
1284         return 0;
1285 }
1286
1287 int __connman_technology_update_rfkill(unsigned int index,
1288                                         enum connman_service_type type,
1289                                                 connman_bool_t softblock,
1290                                                 connman_bool_t hardblock)
1291 {
1292         struct connman_technology *technology;
1293         struct connman_rfkill *rfkill;
1294
1295         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1296
1297         rfkill = g_hash_table_lookup(rfkill_list, &index);
1298         if (rfkill == NULL)
1299                 return -ENXIO;
1300
1301         if (rfkill->softblock == softblock &&
1302                 rfkill->hardblock == hardblock)
1303                 return 0;
1304
1305         rfkill->softblock = softblock;
1306         rfkill->hardblock = hardblock;
1307
1308         if (hardblock) {
1309                 DBG("%s is switched off.", get_name(type));
1310                 return 0;
1311         }
1312
1313         technology = technology_find(type);
1314         /* If there is no driver for this type, ignore it. */
1315         if (technology == NULL)
1316                 return -ENXIO;
1317
1318         if (!global_offlinemode) {
1319                 if (technology->enable_persistent && softblock)
1320                         return __connman_rfkill_block(type, FALSE);
1321                 if (!technology->enable_persistent && !softblock)
1322                         return __connman_rfkill_block(type, TRUE);
1323         }
1324
1325         return 0;
1326 }
1327
1328 int __connman_technology_remove_rfkill(unsigned int index,
1329                                         enum connman_service_type type)
1330 {
1331         struct connman_technology *technology;
1332         struct connman_rfkill *rfkill;
1333
1334         DBG("index %u", index);
1335
1336         rfkill = g_hash_table_lookup(rfkill_list, &index);
1337         if (rfkill == NULL)
1338                 return -ENXIO;
1339
1340         g_hash_table_remove(rfkill_list, &index);
1341
1342         technology = technology_find(type);
1343         if (technology == NULL)
1344                 return -ENXIO;
1345
1346         technology_put(technology);
1347
1348         return 0;
1349 }
1350
1351 int __connman_technology_init(void)
1352 {
1353         DBG("");
1354
1355         connection = connman_dbus_get_connection();
1356
1357         rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
1358                                                         NULL, free_rfkill);
1359
1360         global_offlinemode = connman_technology_load_offlinemode();
1361
1362         /* This will create settings file if it is missing */
1363         connman_technology_save_offlinemode();
1364
1365         return 0;
1366 }
1367
1368 void __connman_technology_cleanup(void)
1369 {
1370         DBG("");
1371
1372         g_hash_table_destroy(rfkill_list);
1373
1374         dbus_connection_unref(connection);
1375 }