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 static int set_regdom_by_device(struct connman_technology *technology,
 248                                                         const char *alpha2)
 249 {
 250         GSList *list;
 251
 252         for (list = technology->device_list; list; list = list->next) {
 253                 struct connman_device *device = list->data;
 254
 255                 if (connman_device_set_regdom(device, alpha2) != 0)
 256                         return -ENOTSUP;
 257         }
 258
 259         return 0;
 260 }
 261
 262 int connman_technology_set_regdom(const char *alpha2)
 263 {
 264         GSList *list;
 265
 266         for (list = technology_list; list; list = list->next) {
 267                 struct connman_technology *technology = list->data;
 268
 269                 if (set_regdom_by_device(technology, alpha2) != 0) {
 270                         if (technology->driver == NULL)
 271                                 continue;
 272
 273                         if (technology->driver->set_regdom != NULL)
 274                                 technology->driver->set_regdom(technology,
 275                                                                 alpha2);
 276                 }
 277         }
 278
 279         return 0;
 280 }
 281
 282 static void free_rfkill(gpointer data)
 283 {
 284         struct connman_rfkill *rfkill = data;
 285
 286         g_free(rfkill);
 287 }
 288
 289 static const char *get_name(enum connman_service_type type)
 290 {
 291         switch (type) {
 292         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 293         case CONNMAN_SERVICE_TYPE_SYSTEM:
 294         case CONNMAN_SERVICE_TYPE_GPS:
 295         case CONNMAN_SERVICE_TYPE_VPN:
 296         case CONNMAN_SERVICE_TYPE_GADGET:
 297                 break;
 298         case CONNMAN_SERVICE_TYPE_ETHERNET:
 299                 return "Wired";
 300         case CONNMAN_SERVICE_TYPE_WIFI:
 301                 return "WiFi";
 302         case CONNMAN_SERVICE_TYPE_WIMAX:
 303                 return "WiMAX";
 304         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 305                 return "Bluetooth";
 306         case CONNMAN_SERVICE_TYPE_CELLULAR:
 307                 return "Cellular";
 308         }
 309
 310         return NULL;
 311 }
 312
 313 static void technology_save(struct connman_technology *technology)
 314 {
 315         GKeyFile *keyfile;
 316         gchar *identifier;
 317
 318         DBG("technology %p", technology);
 319
 320         keyfile = __connman_storage_load_global();
 321         if (keyfile == NULL)
 322                 keyfile = g_key_file_new();
 323
 324         identifier = g_strdup_printf("%s", get_name(technology->type));
 325         if (identifier == NULL)
 326                 goto done;
 327
 328         g_key_file_set_boolean(keyfile, identifier, "Enable",
 329                                 technology->enable_persistent);
 330
 331         if (technology->tethering_ident != NULL)
 332                 g_key_file_set_string(keyfile, identifier,
 333                                         "Tethering.Identifier",
 334                                         technology->tethering_ident);
 335
 336         if (technology->tethering_passphrase != NULL)
 337                 g_key_file_set_string(keyfile, identifier,
 338                                         "Tethering.Passphrase",
 339                                         technology->tethering_passphrase);
 340
 341 done:
 342         g_free(identifier);
 343
 344         __connman_storage_save_global(keyfile);
 345
 346         g_key_file_free(keyfile);
 347
 348         return;
 349 }
 350
 351 static void technology_load(struct connman_technology *technology)
 352 {
 353         GKeyFile *keyfile;
 354         gchar *identifier;
 355         GError *error = NULL;
 356         connman_bool_t enable;
 357
 358         DBG("technology %p", technology);
 359
 360         keyfile = __connman_storage_load_global();
 361         /* Fallback on disabling technology if file not found. */
 362         if (keyfile == NULL) {
 363                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 364                         /* We enable ethernet by default */
 365                         technology->enable_persistent = TRUE;
 366                 else
 367                         technology->enable_persistent = FALSE;
 368                 return;
 369         }
 370
 371         identifier = g_strdup_printf("%s", get_name(technology->type));
 372         if (identifier == NULL)
 373                 goto done;
 374
 375         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 376         if (error == NULL)
 377                 technology->enable_persistent = enable;
 378         else {
 379                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 380                         technology->enable_persistent = TRUE;
 381                 else
 382                         technology->enable_persistent = FALSE;
 383
 384                 technology_save(technology);
 385                 g_clear_error(&error);
 386         }
 387
 388         technology->tethering_ident = g_key_file_get_string(keyfile,
 389                                 identifier, "Tethering.Identifier", NULL);
 390
 391         technology->tethering_passphrase = g_key_file_get_string(keyfile,
 392                                 identifier, "Tethering.Passphrase", NULL);
 393 done:
 394         g_free(identifier);
 395
 396         g_key_file_free(keyfile);
 397
 398         return;
 399 }
 400
 401 connman_bool_t __connman_technology_get_offlinemode(void)
 402 {
 403         return global_offlinemode;
 404 }
 405
 406 static void connman_technology_save_offlinemode()
 407 {
 408         GKeyFile *keyfile;
 409
 410         keyfile = __connman_storage_load_global();
 411         if (keyfile == NULL)
 412                 keyfile = g_key_file_new();
 413
 414         g_key_file_set_boolean(keyfile, "global",
 415                                         "OfflineMode", global_offlinemode);
 416
 417         __connman_storage_save_global(keyfile);
 418
 419         g_key_file_free(keyfile);
 420
 421         return;
 422 }
 423
 424 static connman_bool_t connman_technology_load_offlinemode()
 425 {
 426         GKeyFile *keyfile;
 427         GError *error = NULL;
 428         connman_bool_t offlinemode;
 429
 430         /* If there is a error, we enable offlinemode */
 431         keyfile = __connman_storage_load_global();
 432         if (keyfile == NULL)
 433                 return FALSE;
 434
 435         offlinemode = g_key_file_get_boolean(keyfile, "global",
 436                                                 "OfflineMode", &error);
 437         if (error != NULL) {
 438                 offlinemode = FALSE;
 439                 g_clear_error(&error);
 440         }
 441
 442         g_key_file_free(keyfile);
 443
 444         return offlinemode;
 445 }
 446
 447 static void append_properties(DBusMessageIter *iter,
 448                 struct connman_technology *technology)
 449 {
 450         DBusMessageIter dict;
 451         const char *str;
 452         connman_bool_t powered;
 453
 454         connman_dbus_dict_open(iter, &dict);
 455
 456         str = get_name(technology->type);
 457         if (str != NULL)
 458                 connman_dbus_dict_append_basic(&dict, "Name",
 459                                                 DBUS_TYPE_STRING, &str);
 460
 461         str = __connman_service_type2string(technology->type);
 462         if (str != NULL)
 463                 connman_dbus_dict_append_basic(&dict, "Type",
 464                                                 DBUS_TYPE_STRING, &str);
 465
 466         __sync_synchronize();
 467         if (technology->enabled > 0)
 468                 powered = TRUE;
 469         else
 470                 powered = FALSE;
 471         connman_dbus_dict_append_basic(&dict, "Powered",
 472                                         DBUS_TYPE_BOOLEAN, &powered);
 473
 474         connman_dbus_dict_append_basic(&dict, "Connected",
 475                                         DBUS_TYPE_BOOLEAN,
 476                                         &technology->connected);
 477
 478         connman_dbus_dict_append_basic(&dict, "Tethering",
 479                                         DBUS_TYPE_BOOLEAN,
 480                                         &technology->tethering);
 481
 482         if (technology->tethering_ident != NULL)
 483                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 484                                                 DBUS_TYPE_STRING,
 485                                                 &technology->tethering_ident);
 486
 487         if (technology->tethering_passphrase != NULL)
 488                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 489                                                 DBUS_TYPE_STRING,
 490                                                 &technology->tethering_passphrase);
 491
 492         connman_dbus_dict_close(iter, &dict);
 493 }
 494
 495 static void technology_added_signal(struct connman_technology *technology)
 496 {
 497         DBusMessage *signal;
 498         DBusMessageIter iter;
 499
 500         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 501                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 502         if (signal == NULL)
 503                 return;
 504
 505         dbus_message_iter_init_append(signal, &iter);
 506         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 507                                                         &technology->path);
 508         append_properties(&iter, technology);
 509
 510         dbus_connection_send(connection, signal, NULL);
 511         dbus_message_unref(signal);
 512 }
 513
 514 static void technology_removed_signal(struct connman_technology *technology)
 515 {
 516         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 517                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 518                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 519                         DBUS_TYPE_INVALID);
 520 }
 521
 522 static DBusMessage *get_properties(DBusConnection *conn,
 523                                         DBusMessage *message, void *user_data)
 524 {
 525         struct connman_technology *technology = user_data;
 526         DBusMessage *reply;
 527         DBusMessageIter iter;
 528
 529         reply = dbus_message_new_method_return(message);
 530         if (reply == NULL)
 531                 return NULL;
 532
 533         dbus_message_iter_init_append(reply, &iter);
 534         append_properties(&iter, technology);
 535
 536         return reply;
 537 }
 538
 539 void __connman_technology_list_struct(DBusMessageIter *array)
 540 {
 541         GSList *list;
 542         DBusMessageIter entry;
 543
 544         for (list = technology_list; list; list = list->next) {
 545                 struct connman_technology *technology = list->data;
 546
 547                 if (technology->path == NULL)
 548                         continue;
 549
 550                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 551                                 NULL, &entry);
 552                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 553                                 &technology->path);
 554                 append_properties(&entry, technology);
 555                 dbus_message_iter_close_container(array, &entry);
 556         }
 557 }
 558
 559 static gboolean technology_pending_reply(gpointer user_data)
 560 {
 561         struct connman_technology *technology = user_data;
 562         DBusMessage *reply;
 563
 564         /* Power request timedout, send ETIMEDOUT. */
 565         if (technology->pending_reply != NULL) {
 566                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 567                 if (reply != NULL)
 568                         g_dbus_send_message(connection, reply);
 569
 570                 dbus_message_unref(technology->pending_reply);
 571                 technology->pending_reply = NULL;
 572                 technology->pending_timeout = 0;
 573         }
 574
 575         return FALSE;
 576 }
 577
 578 static int technology_enable(struct connman_technology *technology)
 579 {
 580         GSList *list;
 581         int err = 0;
 582
 583         DBG("technology %p enable", technology);
 584
 585         __sync_synchronize();
 586         if (technology->enabled > 0) {
 587                 err = -EALREADY;
 588                 goto done;
 589         }
 590
 591         if (technology->pending_reply != NULL) {
 592                 err = -EBUSY;
 593                 goto done;
 594         }
 595
 596         __connman_rfkill_block(technology->type, FALSE);
 597
 598         for (list = technology->device_list; list; list = list->next) {
 599                 struct connman_device *device = list->data;
 600
 601                 err = __connman_device_enable(device);
 602         }
 603
 604 done:
 605         return err;
 606 }
 607
 608 static int technology_disable(struct connman_technology *technology)
 609 {
 610         GSList *list;
 611         int err = 0;
 612
 613         DBG("technology %p disable", technology);
 614
 615         __sync_synchronize();
 616         if (technology->enabled == 0) {
 617                 err = -EALREADY;
 618                 goto done;
 619         }
 620
 621         if (technology->pending_reply != NULL) {
 622                 err = -EBUSY;
 623                 goto done;
 624         }
 625
 626         if (technology->tethering == TRUE)
 627                 set_tethering(technology, FALSE);
 628
 629         __connman_rfkill_block(technology->type, TRUE);
 630
 631         for (list = technology->device_list; list; list = list->next) {
 632                 struct connman_device *device = list->data;
 633
 634                 err = __connman_device_disable(device);
 635         }
 636
 637 done:
 638         return err;
 639 }
 640
 641 static DBusMessage *set_powered(struct connman_technology *technology,
 642                                 DBusMessage *msg, connman_bool_t powered)
 643 {
 644         DBusMessage *reply = NULL;
 645         connman_bool_t persistent;
 646         int err;
 647
 648         if (powered == TRUE) {
 649                 err = technology_enable(technology);
 650                 persistent = TRUE;
 651         } else {
 652                 err = technology_disable(technology);
 653                 persistent = FALSE;
 654         }
 655
 656         if (err != -EBUSY) {
 657                 technology->enable_persistent = persistent;
 658                 technology_save(technology);
 659         }
 660
 661         if (err == -EINPROGRESS) {
 662                 technology->pending_reply = dbus_message_ref(msg);
 663                 technology->pending_timeout = g_timeout_add_seconds(10,
 664                                         technology_pending_reply, technology);
 665         } else if (err == -EALREADY) {
 666                 if (powered == TRUE)
 667                         reply = __connman_error_already_enabled(msg);
 668                 else
 669                         reply = __connman_error_already_disabled(msg);
 670         } else if (err < 0)
 671                 reply = __connman_error_failed(msg, -err);
 672         else
 673                 reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 674
 675         return reply;
 676 }
 677
 678 static DBusMessage *set_property(DBusConnection *conn,
 679                                         DBusMessage *msg, void *data)
 680 {
 681         struct connman_technology *technology = data;
 682         DBusMessageIter iter, value;
 683         const char *name;
 684         int type;
 685
 686         DBG("conn %p", conn);
 687
 688         if (dbus_message_iter_init(msg, &iter) == FALSE)
 689                 return __connman_error_invalid_arguments(msg);
 690
 691         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 692                 return __connman_error_invalid_arguments(msg);
 693
 694         dbus_message_iter_get_basic(&iter, &name);
 695         dbus_message_iter_next(&iter);
 696
 697         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 698                 return __connman_error_invalid_arguments(msg);
 699
 700         dbus_message_iter_recurse(&iter, &value);
 701
 702         type = dbus_message_iter_get_arg_type(&value);
 703
 704         DBG("property %s", name);
 705
 706         if (g_str_equal(name, "Tethering") == TRUE) {
 707                 int err;
 708                 connman_bool_t tethering;
 709
 710                 if (type != DBUS_TYPE_BOOLEAN)
 711                         return __connman_error_invalid_arguments(msg);
 712
 713                 dbus_message_iter_get_basic(&value, &tethering);
 714
 715                 if (technology->tethering == tethering)
 716                         return __connman_error_already_enabled(msg);
 717
 718                 err = set_tethering(technology, tethering);
 719                 if (err < 0)
 720                         return __connman_error_failed(msg, -err);
 721
 722         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 723                 const char *str;
 724
 725                 dbus_message_iter_get_basic(&value, &str);
 726
 727                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 728                         return __connman_error_not_supported(msg);
 729
 730                 if (strlen(str) < 1 || strlen(str) > 32)
 731                         return __connman_error_invalid_arguments(msg);
 732
 733                 g_free(technology->tethering_ident);
 734                 technology->tethering_ident = g_strdup(str);
 735                 technology_save(technology);
 736         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 737                 const char *str;
 738
 739                 dbus_message_iter_get_basic(&value, &str);
 740
 741                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 742                         return __connman_error_not_supported(msg);
 743
 744                 if (strlen(str) < 8 || strlen(str) > 63)
 745                         return __connman_error_passphrase_required(msg);
 746
 747                 g_free(technology->tethering_passphrase);
 748                 technology->tethering_passphrase = g_strdup(str);
 749                 technology_save(technology);
 750         } else if (g_str_equal(name, "Powered") == TRUE) {
 751                 connman_bool_t enable;
 752
 753                 if (type != DBUS_TYPE_BOOLEAN)
 754                         return __connman_error_invalid_arguments(msg);
 755
 756                 dbus_message_iter_get_basic(&value, &enable);
 757
 758                 return set_powered(technology, msg, enable);
 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 void __connman_technology_notify_regdom_by_device(struct connman_device *device,
 843                                                 int result, const char *alpha2)
 844 {
 845         struct connman_technology *technology;
 846         enum connman_service_type type;
 847
 848         type = __connman_device_get_service_type(device);
 849         technology = technology_find(type);
 850
 851         if (technology == NULL)
 852                 return;
 853
 854         if (result < 0) {
 855                 if (technology->driver != NULL &&
 856                                 technology->driver->set_regdom != NULL) {
 857                         technology->driver->set_regdom(technology, alpha2);
 858                         return;
 859                 }
 860
 861                 alpha2 = NULL;
 862         }
 863
 864         connman_technology_regdom_notify(technology, alpha2);
 865 }
 866
 867 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 868 {
 869         struct connman_technology *technology = data;
 870         int err;
 871
 872         DBG ("technology %p request from %s", technology,
 873                         dbus_message_get_sender(msg));
 874
 875         dbus_message_ref(msg);
 876         technology->scan_pending =
 877                 g_slist_prepend(technology->scan_pending, msg);
 878
 879         err = __connman_device_request_scan(technology->type);
 880         if (err < 0)
 881                 reply_scan_pending(technology, err);
 882
 883         return NULL;
 884 }
 885
 886 static const GDBusMethodTable technology_methods[] = {
 887         { GDBUS_DEPRECATED_METHOD("GetProperties",
 888                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 889                         get_properties) },
 890         { GDBUS_ASYNC_METHOD("SetProperty",
 891                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 892                         NULL, set_property) },
 893         { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
 894         { },
 895 };
 896
 897 static const GDBusSignalTable technology_signals[] = {
 898         { GDBUS_SIGNAL("PropertyChanged",
 899                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 900         { },
 901 };
 902
 903 static struct connman_technology *technology_get(enum connman_service_type type)
 904 {
 905         struct connman_technology *technology;
 906         struct connman_technology_driver *driver = NULL;
 907         const char *str;
 908         GSList *list;
 909         int err;
 910
 911         DBG("type %d", type);
 912
 913         str = __connman_service_type2string(type);
 914         if (str == NULL)
 915                 return NULL;
 916
 917         technology = technology_find(type);
 918         if (technology != NULL) {
 919                 __sync_fetch_and_add(&technology->refcount, 1);
 920                 return technology;
 921         }
 922
 923         /* First check if we have a driver for this technology type */
 924         for (list = driver_list; list; list = list->next) {
 925                 driver = list->data;
 926
 927                 if (driver->type == type)
 928                         break;
 929                 else
 930                         driver = NULL;
 931         }
 932
 933         if (driver == NULL) {
 934                 DBG("No matching driver found for %s.",
 935                                 __connman_service_type2string(type));
 936                 return NULL;
 937         }
 938
 939         technology = g_try_new0(struct connman_technology, 1);
 940         if (technology == NULL)
 941                 return NULL;
 942
 943         technology->refcount = 1;
 944
 945         technology->type = type;
 946         technology->path = g_strdup_printf("%s/technology/%s",
 947                                                         CONNMAN_PATH, str);
 948
 949         technology->device_list = NULL;
 950
 951         technology->pending_reply = NULL;
 952
 953         technology_load(technology);
 954
 955         if (g_dbus_register_interface(connection, technology->path,
 956                                         CONNMAN_TECHNOLOGY_INTERFACE,
 957                                         technology_methods, technology_signals,
 958                                         NULL, technology, NULL) == FALSE) {
 959                 connman_error("Failed to register %s", technology->path);
 960                 g_free(technology);
 961                 return NULL;
 962         }
 963
 964         technology_list = g_slist_prepend(technology_list, technology);
 965
 966         technology_added_signal(technology);
 967
 968         technology->driver = driver;
 969         err = driver->probe(technology);
 970         if (err != 0)
 971                 DBG("Driver probe failed for technology %p", technology);
 972
 973         DBG("technology %p", technology);
 974
 975         return technology;
 976 }
 977
 978 static void technology_put(struct connman_technology *technology)
 979 {
 980         DBG("technology %p", technology);
 981
 982         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
 983                 return;
 984
 985         reply_scan_pending(technology, -EINTR);
 986
 987         if (technology->driver) {
 988                 technology->driver->remove(technology);
 989                 technology->driver = NULL;
 990         }
 991
 992         technology_list = g_slist_remove(technology_list, technology);
 993
 994         technology_removed_signal(technology);
 995
 996         g_dbus_unregister_interface(connection, technology->path,
 997                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 998
 999         g_slist_free(technology->device_list);
1000
1001         g_free(technology->path);
1002         g_free(technology->regdom);
1003         g_free(technology->tethering_ident);
1004         g_free(technology->tethering_passphrase);
1005         g_free(technology);
1006 }
1007
1008 void __connman_technology_add_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("Adding interface %s [ %s ]", name,
1029                                 __connman_service_type2string(type));
1030
1031         technology = technology_find(type);
1032
1033         if (technology == NULL || technology->driver == NULL
1034                         || technology->driver->add_interface == NULL)
1035                 return;
1036
1037         technology->driver->add_interface(technology,
1038                                         index, name, ident);
1039 }
1040
1041 void __connman_technology_remove_interface(enum connman_service_type type,
1042                                 int index, const char *name, const char *ident)
1043 {
1044         struct connman_technology *technology;
1045
1046         switch (type) {
1047         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1048         case CONNMAN_SERVICE_TYPE_SYSTEM:
1049                 return;
1050         case CONNMAN_SERVICE_TYPE_ETHERNET:
1051         case CONNMAN_SERVICE_TYPE_WIFI:
1052         case CONNMAN_SERVICE_TYPE_WIMAX:
1053         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1054         case CONNMAN_SERVICE_TYPE_CELLULAR:
1055         case CONNMAN_SERVICE_TYPE_GPS:
1056         case CONNMAN_SERVICE_TYPE_VPN:
1057         case CONNMAN_SERVICE_TYPE_GADGET:
1058                 break;
1059         }
1060
1061         connman_info("Remove interface %s [ %s ]", name,
1062                                 __connman_service_type2string(type));
1063
1064         technology = technology_find(type);
1065
1066         if (technology == NULL || technology->driver == NULL)
1067                 return;
1068
1069         if (technology->driver->remove_interface)
1070                 technology->driver->remove_interface(technology, index);
1071 }
1072
1073 int __connman_technology_add_device(struct connman_device *device)
1074 {
1075         struct connman_technology *technology;
1076         enum connman_service_type type;
1077
1078         DBG("device %p", device);
1079
1080         type = __connman_device_get_service_type(device);
1081
1082         technology = technology_get(type);
1083         if (technology == NULL) {
1084                 /*
1085                  * Since no driver can be found for this device at the moment we
1086                  * add it to the techless device list.
1087                 */
1088                 techless_device_list = g_slist_prepend(techless_device_list,
1089                                                                 device);
1090
1091                 return -ENXIO;
1092         }
1093
1094         if (technology->enable_persistent && !global_offlinemode) {
1095                 int err = __connman_device_enable(device);
1096                 /*
1097                  * connman_technology_add_device() calls __connman_device_enable()
1098                  * but since the device is already enabled, the calls does not
1099                  * propagate through to connman_technology_enabled via
1100                  * connman_device_set_powered.
1101                  */
1102                 if (err == -EALREADY)
1103                         __connman_technology_enabled(type);
1104         }
1105         /* if technology persistent state is offline */
1106         if (!technology->enable_persistent)
1107                 __connman_device_disable(device);
1108
1109         technology->device_list = g_slist_prepend(technology->device_list,
1110                                                                 device);
1111
1112         return 0;
1113 }
1114
1115 int __connman_technology_remove_device(struct connman_device *device)
1116 {
1117         struct connman_technology *technology;
1118         enum connman_service_type type;
1119
1120         DBG("device %p", device);
1121
1122         type = __connman_device_get_service_type(device);
1123
1124         technology = technology_find(type);
1125         if (technology == NULL) {
1126                 techless_device_list = g_slist_remove(techless_device_list,
1127                                                                 device);
1128                 return -ENXIO;
1129         }
1130
1131         technology->device_list = g_slist_remove(technology->device_list,
1132                                                                 device);
1133         technology_put(technology);
1134
1135         return 0;
1136 }
1137
1138 static void powered_changed(struct connman_technology *technology)
1139 {
1140         connman_bool_t powered;
1141
1142         __sync_synchronize();
1143         if (technology->enabled >0)
1144                 powered = TRUE;
1145         else
1146                 powered = FALSE;
1147
1148         connman_dbus_property_changed_basic(technology->path,
1149                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1150                         DBUS_TYPE_BOOLEAN, &powered);
1151 }
1152
1153 int __connman_technology_enabled(enum connman_service_type type)
1154 {
1155         struct connman_technology *technology;
1156
1157         technology = technology_find(type);
1158         if (technology == NULL)
1159                 return -ENXIO;
1160
1161         if (__sync_fetch_and_add(&technology->enabled, 1) != 0)
1162                 return -EALREADY;
1163
1164         powered_changed(technology);
1165
1166         if (technology->pending_reply != NULL) {
1167                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1168                 dbus_message_unref(technology->pending_reply);
1169                 g_source_remove(technology->pending_timeout);
1170                 technology->pending_reply = NULL;
1171                 technology->pending_timeout = 0;
1172         }
1173
1174         return 0;
1175 }
1176
1177 int __connman_technology_disabled(enum connman_service_type type)
1178 {
1179         struct connman_technology *technology;
1180
1181         technology = technology_find(type);
1182         if (technology == NULL)
1183                 return -ENXIO;
1184
1185         if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
1186                 return -EINPROGRESS;
1187
1188         if (technology->pending_reply != NULL) {
1189                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1190                 dbus_message_unref(technology->pending_reply);
1191                 g_source_remove(technology->pending_timeout);
1192                 technology->pending_reply = NULL;
1193                 technology->pending_timeout = 0;
1194         }
1195
1196         powered_changed(technology);
1197
1198         return 0;
1199 }
1200
1201 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1202 {
1203         GSList *list;
1204         int err = -EINVAL;
1205
1206         if (global_offlinemode == offlinemode)
1207                 return 0;
1208
1209         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1210
1211         /*
1212          * This is a bit tricky. When you set offlinemode, there is no
1213          * way to differentiate between attempting offline mode and
1214          * resuming offlinemode from last saved profile. We need that
1215          * information in rfkill_update, otherwise it falls back on the
1216          * technology's persistent state. Hence we set the offline mode here
1217          * but save it & call the notifier only if its successful.
1218          */
1219
1220         global_offlinemode = offlinemode;
1221
1222         /* Traverse technology list, enable/disable each technology. */
1223         for (list = technology_list; list; list = list->next) {
1224                 struct connman_technology *technology = list->data;
1225
1226                 if (offlinemode)
1227                         err = technology_disable(technology);
1228
1229                 if (!offlinemode && technology->enable_persistent)
1230                         err = technology_enable(technology);
1231         }
1232
1233         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1234                 connman_technology_save_offlinemode();
1235                 __connman_notifier_offlinemode(offlinemode);
1236         } else
1237                 global_offlinemode = connman_technology_load_offlinemode();
1238
1239         return err;
1240 }
1241
1242 void __connman_technology_set_connected(enum connman_service_type type,
1243                 connman_bool_t connected)
1244 {
1245         struct connman_technology *technology;
1246
1247         technology = technology_find(type);
1248         if (technology == NULL)
1249                 return;
1250
1251         DBG("technology %p connected %d", technology, connected);
1252
1253         technology->connected = connected;
1254
1255         connman_dbus_property_changed_basic(technology->path,
1256                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1257                         DBUS_TYPE_BOOLEAN, &connected);
1258 }
1259
1260 int __connman_technology_add_rfkill(unsigned int index,
1261                                         enum connman_service_type type,
1262                                                 connman_bool_t softblock,
1263                                                 connman_bool_t hardblock)
1264 {
1265         struct connman_technology *technology;
1266         struct connman_rfkill *rfkill;
1267
1268         DBG("index %u type %d soft %u hard %u", index, type,
1269                                                         softblock, hardblock);
1270
1271         rfkill = g_hash_table_lookup(rfkill_list, &index);
1272         if (rfkill != NULL)
1273                 goto done;
1274
1275         rfkill = g_try_new0(struct connman_rfkill, 1);
1276         if (rfkill == NULL)
1277                 return -ENOMEM;
1278
1279         rfkill->index = index;
1280         rfkill->type = type;
1281         rfkill->softblock = softblock;
1282         rfkill->hardblock = hardblock;
1283
1284         g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
1285
1286 done:
1287         technology = technology_get(type);
1288         /* If there is no driver for this type, ignore it. */
1289         if (technology == NULL)
1290                 return -ENXIO;
1291
1292         if (hardblock) {
1293                 DBG("%s is switched off.", get_name(type));
1294                 return 0;
1295         }
1296
1297         /*
1298          * If Offline mode is on, we softblock the device if it isnt already.
1299          * If Offline mode is off, we rely on the persistent state of tech.
1300          */
1301         if (global_offlinemode) {
1302                 if (!softblock)
1303                         return __connman_rfkill_block(type, TRUE);
1304         } else {
1305                 if (technology->enable_persistent && softblock)
1306                         return __connman_rfkill_block(type, FALSE);
1307                 /* if technology persistent state is offline */
1308                 if (!technology->enable_persistent && !softblock)
1309                         return __connman_rfkill_block(type, TRUE);
1310         }
1311
1312         return 0;
1313 }
1314
1315 int __connman_technology_update_rfkill(unsigned int index,
1316                                         enum connman_service_type type,
1317                                                 connman_bool_t softblock,
1318                                                 connman_bool_t hardblock)
1319 {
1320         struct connman_technology *technology;
1321         struct connman_rfkill *rfkill;
1322
1323         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1324
1325         rfkill = g_hash_table_lookup(rfkill_list, &index);
1326         if (rfkill == NULL)
1327                 return -ENXIO;
1328
1329         if (rfkill->softblock == softblock &&
1330                 rfkill->hardblock == hardblock)
1331                 return 0;
1332
1333         rfkill->softblock = softblock;
1334         rfkill->hardblock = hardblock;
1335
1336         if (hardblock) {
1337                 DBG("%s is switched off.", get_name(type));
1338                 return 0;
1339         }
1340
1341         technology = technology_find(type);
1342         /* If there is no driver for this type, ignore it. */
1343         if (technology == NULL)
1344                 return -ENXIO;
1345
1346         if (!global_offlinemode) {
1347                 if (technology->enable_persistent && softblock)
1348                         return __connman_rfkill_block(type, FALSE);
1349                 if (!technology->enable_persistent && !softblock)
1350                         return __connman_rfkill_block(type, TRUE);
1351         }
1352
1353         return 0;
1354 }
1355
1356 int __connman_technology_remove_rfkill(unsigned int index,
1357                                         enum connman_service_type type)
1358 {
1359         struct connman_technology *technology;
1360         struct connman_rfkill *rfkill;
1361
1362         DBG("index %u", index);
1363
1364         rfkill = g_hash_table_lookup(rfkill_list, &index);
1365         if (rfkill == NULL)
1366                 return -ENXIO;
1367
1368         g_hash_table_remove(rfkill_list, &index);
1369
1370         technology = technology_find(type);
1371         if (technology == NULL)
1372                 return -ENXIO;
1373
1374         technology_put(technology);
1375
1376         return 0;
1377 }
1378
1379 int __connman_technology_init(void)
1380 {
1381         DBG("");
1382
1383         connection = connman_dbus_get_connection();
1384
1385         rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
1386                                                         NULL, free_rfkill);
1387
1388         global_offlinemode = connman_technology_load_offlinemode();
1389
1390         /* This will create settings file if it is missing */
1391         connman_technology_save_offlinemode();
1392
1393         return 0;
1394 }
1395
1396 void __connman_technology_cleanup(void)
1397 {
1398         DBG("");
1399
1400         g_hash_table_destroy(rfkill_list);
1401
1402         dbus_connection_unref(connection);
1403 }