src/technology.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <string.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GSList *technology_list = NULL;
  36
  37 /*
  38  * List of devices with no technology associated with them either because of
  39  * no compiled in support or the driver is not yet loaded.
  40 */
  41 static GSList *techless_device_list = NULL;
  42 static GHashTable *rfkill_list;
  43
  44 static connman_bool_t global_offlinemode;
  45
  46 struct connman_rfkill {
  47         unsigned int index;
  48         enum connman_service_type type;
  49         connman_bool_t softblock;
  50         connman_bool_t hardblock;
  51 };
  52
  53 struct connman_technology {
  54         int refcount;
  55         enum connman_service_type type;
  56         char *path;
  57         GSList *device_list;
  58         int enabled;
  59         char *regdom;
  60         connman_bool_t connected;
  61
  62         connman_bool_t tethering;
  63         char *tethering_ident;
  64         char *tethering_passphrase;
  65
  66         connman_bool_t enable_persistent; /* Save the tech state */
  67
  68         struct connman_technology_driver *driver;
  69         void *driver_data;
  70
  71         DBusMessage *pending_reply;
  72         guint pending_timeout;
  73
  74         GSList *scan_pending;
  75 };
  76
  77 static GSList *driver_list = NULL;
  78
  79 static gint compare_priority(gconstpointer a, gconstpointer b)
  80 {
  81         const struct connman_technology_driver *driver1 = a;
  82         const struct connman_technology_driver *driver2 = b;
  83
  84         return driver2->priority - driver1->priority;
  85 }
  86
  87 static void rfkill_check(gpointer key, gpointer value, gpointer user_data)
  88 {
  89         struct connman_rfkill *rfkill = value;
  90         enum connman_service_type type = GPOINTER_TO_INT(user_data);
  91
  92         /* Calling _technology_rfkill_add will update the tech. */
  93         if (rfkill->type == type)
  94           __connman_technology_add_rfkill(rfkill->index, type,
  95                                 rfkill->softblock, rfkill->hardblock);
  96 }
  97
  98 /**
  99  * connman_technology_driver_register:
 100  * @driver: Technology driver definition
 101  *
 102  * Register a new technology driver
 103  *
 104  * Returns: %0 on success
 105  */
 106 int connman_technology_driver_register(struct connman_technology_driver *driver)
 107 {
 108         GSList *list;
 109         struct connman_device *device;
 110         enum connman_service_type type;
 111
 112         DBG("Registering %s driver", driver->name);
 113
 114         driver_list = g_slist_insert_sorted(driver_list, driver,
 115                                                         compare_priority);
 116
 117         if (techless_device_list == NULL)
 118                 goto check_rfkill;
 119
 120         /*
 121          * Check for technology less devices if this driver
 122          * can service any of them.
 123         */
 124         for (list = techless_device_list; list; list = list->next) {
 125                 device = list->data;
 126
 127                 type = __connman_device_get_service_type(device);
 128                 if (type != driver->type)
 129                         continue;
 130
 131                 techless_device_list = g_slist_remove(techless_device_list,
 132                                                                 device);
 133
 134                 __connman_technology_add_device(device);
 135         }
 136
 137 check_rfkill:
 138         /* Check for orphaned rfkill switches. */
 139         g_hash_table_foreach(rfkill_list, rfkill_check,
 140                                         GINT_TO_POINTER(driver->type));
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * connman_technology_driver_unregister:
 147  * @driver: Technology driver definition
 148  *
 149  * Remove a previously registered technology driver
 150  */
 151 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 152 {
 153         GSList *list;
 154         struct connman_technology *technology;
 155
 156         DBG("Unregistering driver %p name %s", driver, driver->name);
 157
 158         for (list = technology_list; list; list = list->next) {
 159                 technology = list->data;
 160
 161                 if (technology->driver == NULL)
 162                         continue;
 163
 164                 if (technology->type == driver->type) {
 165                         technology->driver->remove(technology);
 166                         technology->driver = NULL;
 167                 }
 168         }
 169
 170         driver_list = g_slist_remove(driver_list, driver);
 171 }
 172
 173 static void tethering_changed(struct connman_technology *technology)
 174 {
 175         connman_bool_t tethering = technology->tethering;
 176
 177         connman_dbus_property_changed_basic(technology->path,
 178                                 CONNMAN_TECHNOLOGY_INTERFACE, "Tethering",
 179                                                 DBUS_TYPE_BOOLEAN, &tethering);
 180 }
 181
 182 void connman_technology_tethering_notify(struct connman_technology *technology,
 183                                                         connman_bool_t enabled)
 184 {
 185         GSList *list;
 186
 187         DBG("technology %p enabled %u", technology, enabled);
 188
 189         if (technology->tethering == enabled)
 190                 return;
 191
 192         technology->tethering = enabled;
 193
 194         tethering_changed(technology);
 195
 196         if (enabled == TRUE)
 197                 __connman_tethering_set_enabled();
 198         else {
 199                 for (list = technology_list; list; list = list->next) {
 200                         struct connman_technology *other_tech = list->data;
 201                         if (other_tech->tethering == TRUE)
 202                                 break;
 203                 }
 204                 if (list == NULL)
 205                         __connman_tethering_set_disabled();
 206         }
 207 }
 208
 209 static int set_tethering(struct connman_technology *technology,
 210                                 connman_bool_t enabled)
 211 {
 212         const char *ident, *passphrase, *bridge;
 213
 214         ident = technology->tethering_ident;
 215         passphrase = technology->tethering_passphrase;
 216
 217         if (technology->driver == NULL ||
 218                         technology->driver->set_tethering == NULL)
 219                 return -EOPNOTSUPP;
 220
 221         bridge = __connman_tethering_get_bridge();
 222         if (bridge == NULL)
 223                 return -EOPNOTSUPP;
 224
 225         if (technology->type == CONNMAN_SERVICE_TYPE_WIFI &&
 226             (ident == NULL || passphrase == NULL))
 227                 return -EINVAL;
 228
 229         return technology->driver->set_tethering(technology, ident, passphrase,
 230                                                         bridge, enabled);
 231 }
 232
 233 void connman_technology_regdom_notify(struct connman_technology *technology,
 234                                                         const char *alpha2)
 235 {
 236         DBG("");
 237
 238         if (alpha2 == NULL)
 239                 connman_error("Failed to set regulatory domain");
 240         else
 241                 DBG("Regulatory domain set to %s", alpha2);
 242
 243         g_free(technology->regdom);
 244         technology->regdom = g_strdup(alpha2);
 245 }
 246
 247 int connman_technology_set_regdom(const char *alpha2)
 248 {
 249         GSList *list;
 250
 251         for (list = technology_list; list; list = list->next) {
 252                 struct connman_technology *technology = list->data;
 253
 254                 if (technology->driver == NULL)
 255                         continue;
 256
 257                 if (technology->driver->set_regdom)
 258                         technology->driver->set_regdom(technology, alpha2);
 259         }
 260
 261         return 0;
 262 }
 263
 264 static void free_rfkill(gpointer data)
 265 {
 266         struct connman_rfkill *rfkill = data;
 267
 268         g_free(rfkill);
 269 }
 270
 271 static const char *get_name(enum connman_service_type type)
 272 {
 273         switch (type) {
 274         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 275         case CONNMAN_SERVICE_TYPE_SYSTEM:
 276         case CONNMAN_SERVICE_TYPE_GPS:
 277         case CONNMAN_SERVICE_TYPE_VPN:
 278         case CONNMAN_SERVICE_TYPE_GADGET:
 279                 break;
 280         case CONNMAN_SERVICE_TYPE_ETHERNET:
 281                 return "Wired";
 282         case CONNMAN_SERVICE_TYPE_WIFI:
 283                 return "WiFi";
 284         case CONNMAN_SERVICE_TYPE_WIMAX:
 285                 return "WiMAX";
 286         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 287                 return "Bluetooth";
 288         case CONNMAN_SERVICE_TYPE_CELLULAR:
 289                 return "Cellular";
 290         }
 291
 292         return NULL;
 293 }
 294
 295 static void load_state(struct connman_technology *technology)
 296 {
 297         GKeyFile *keyfile;
 298         gchar *identifier;
 299         GError *error = NULL;
 300         connman_bool_t enable;
 301
 302         DBG("technology %p", technology);
 303
 304         keyfile = __connman_storage_load_global();
 305         /* Fallback on disabling technology if file not found. */
 306         if (keyfile == NULL) {
 307                 technology->enable_persistent = FALSE;
 308                 return;
 309         }
 310
 311         identifier = g_strdup_printf("%s", get_name(technology->type));
 312         if (identifier == NULL)
 313                 goto done;
 314
 315         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 316         if (error == NULL)
 317                 technology->enable_persistent = enable;
 318         else {
 319                 technology->enable_persistent = FALSE;
 320                 g_clear_error(&error);
 321         }
 322 done:
 323         g_free(identifier);
 324
 325         g_key_file_free(keyfile);
 326
 327         return;
 328 }
 329
 330 static void save_state(struct connman_technology *technology)
 331 {
 332         GKeyFile *keyfile;
 333         gchar *identifier;
 334
 335         DBG("technology %p", technology);
 336
 337         keyfile = __connman_storage_load_global();
 338         if (keyfile == NULL)
 339                 keyfile = g_key_file_new();
 340
 341         identifier = g_strdup_printf("%s", get_name(technology->type));
 342         if (identifier == NULL)
 343                 goto done;
 344
 345         g_key_file_set_boolean(keyfile, identifier, "Enable",
 346                                 technology->enable_persistent);
 347
 348 done:
 349         g_free(identifier);
 350
 351         __connman_storage_save_global(keyfile);
 352
 353         g_key_file_free(keyfile);
 354
 355         return;
 356 }
 357
 358 connman_bool_t __connman_technology_get_offlinemode(void)
 359 {
 360         return global_offlinemode;
 361 }
 362
 363 static void connman_technology_save_offlinemode()
 364 {
 365         GKeyFile *keyfile;
 366
 367         keyfile = __connman_storage_load_global();
 368         if (keyfile == NULL)
 369                 keyfile = g_key_file_new();
 370
 371         g_key_file_set_boolean(keyfile, "global",
 372                                         "OfflineMode", global_offlinemode);
 373
 374         __connman_storage_save_global(keyfile);
 375
 376         g_key_file_free(keyfile);
 377
 378         return;
 379 }
 380
 381 static connman_bool_t connman_technology_load_offlinemode()
 382 {
 383         GKeyFile *keyfile;
 384         GError *error = NULL;
 385         connman_bool_t offlinemode;
 386
 387         /* If there is a error, we enable offlinemode */
 388         keyfile = __connman_storage_load_global();
 389         if (keyfile == NULL)
 390                 return TRUE;
 391
 392         offlinemode = g_key_file_get_boolean(keyfile, "global",
 393                                                 "OfflineMode", &error);
 394         if (error != NULL) {
 395                 offlinemode = TRUE;
 396                 g_clear_error(&error);
 397         }
 398
 399         g_key_file_free(keyfile);
 400
 401         return offlinemode;
 402 }
 403
 404 static void append_properties(DBusMessageIter *iter,
 405                 struct connman_technology *technology)
 406 {
 407         DBusMessageIter dict;
 408         const char *str;
 409         connman_bool_t powered;
 410
 411         connman_dbus_dict_open(iter, &dict);
 412
 413         str = get_name(technology->type);
 414         if (str != NULL)
 415                 connman_dbus_dict_append_basic(&dict, "Name",
 416                                                 DBUS_TYPE_STRING, &str);
 417
 418         str = __connman_service_type2string(technology->type);
 419         if (str != NULL)
 420                 connman_dbus_dict_append_basic(&dict, "Type",
 421                                                 DBUS_TYPE_STRING, &str);
 422
 423         __sync_synchronize();
 424         if (technology->enabled > 0)
 425                 powered = TRUE;
 426         else
 427                 powered = FALSE;
 428         connman_dbus_dict_append_basic(&dict, "Powered",
 429                                         DBUS_TYPE_BOOLEAN, &powered);
 430
 431         connman_dbus_dict_append_basic(&dict, "Connected",
 432                                         DBUS_TYPE_BOOLEAN,
 433                                         &technology->connected);
 434
 435         connman_dbus_dict_append_basic(&dict, "Tethering",
 436                                         DBUS_TYPE_BOOLEAN,
 437                                         &technology->tethering);
 438
 439         if (technology->tethering_ident != NULL)
 440                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 441                                                 DBUS_TYPE_STRING,
 442                                                 &technology->tethering_ident);
 443
 444         if (technology->tethering_passphrase != NULL)
 445                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 446                                                 DBUS_TYPE_STRING,
 447                                                 &technology->tethering_passphrase);
 448
 449         connman_dbus_dict_close(iter, &dict);
 450 }
 451
 452 static void technology_added_signal(struct connman_technology *technology)
 453 {
 454         DBusMessage *signal;
 455         DBusMessageIter iter;
 456
 457         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 458                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 459         if (signal == NULL)
 460                 return;
 461
 462         dbus_message_iter_init_append(signal, &iter);
 463         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 464                                                         &technology->path);
 465         append_properties(&iter, technology);
 466
 467         dbus_connection_send(connection, signal, NULL);
 468         dbus_message_unref(signal);
 469 }
 470
 471 static void technology_removed_signal(struct connman_technology *technology)
 472 {
 473         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 474                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 475                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 476                         DBUS_TYPE_INVALID);
 477 }
 478
 479 static DBusMessage *get_properties(DBusConnection *conn,
 480                                         DBusMessage *message, void *user_data)
 481 {
 482         struct connman_technology *technology = user_data;
 483         DBusMessage *reply;
 484         DBusMessageIter iter;
 485
 486         reply = dbus_message_new_method_return(message);
 487         if (reply == NULL)
 488                 return NULL;
 489
 490         dbus_message_iter_init_append(reply, &iter);
 491         append_properties(&iter, technology);
 492
 493         return reply;
 494 }
 495
 496 void __connman_technology_list_struct(DBusMessageIter *array)
 497 {
 498         GSList *list;
 499         DBusMessageIter entry;
 500
 501         for (list = technology_list; list; list = list->next) {
 502                 struct connman_technology *technology = list->data;
 503
 504                 if (technology->path == NULL)
 505                         continue;
 506
 507                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 508                                 NULL, &entry);
 509                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 510                                 &technology->path);
 511                 append_properties(&entry, technology);
 512                 dbus_message_iter_close_container(array, &entry);
 513         }
 514 }
 515
 516 static gboolean technology_pending_reply(gpointer user_data)
 517 {
 518         struct connman_technology *technology = user_data;
 519         DBusMessage *reply;
 520
 521         /* Power request timedout, send ETIMEDOUT. */
 522         if (technology->pending_reply != NULL) {
 523                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 524                 if (reply != NULL)
 525                         g_dbus_send_message(connection, reply);
 526
 527                 dbus_message_unref(technology->pending_reply);
 528                 technology->pending_reply = NULL;
 529                 technology->pending_timeout = 0;
 530         }
 531
 532         return FALSE;
 533 }
 534
 535 static int technology_enable(struct connman_technology *technology,
 536                 DBusMessage *msg)
 537 {
 538         GSList *list;
 539         int err = 0;
 540         int ret = -ENODEV;
 541         DBusMessage *reply;
 542
 543         DBG("technology %p enable", technology);
 544
 545         __sync_synchronize();
 546         if (technology->enabled > 0) {
 547                 err = -EALREADY;
 548                 goto done;
 549         }
 550
 551         if (technology->pending_reply != NULL) {
 552                 err = -EBUSY;
 553                 goto done;
 554         }
 555
 556         if (msg != NULL) {
 557                 /*
 558                  * This is a bit of a trick. When msg is not NULL it means
 559                  * thats technology_enable was invoked from the manager API.
 560                  * Hence we save the state here.
 561                  */
 562                 technology->enable_persistent = TRUE;
 563                 save_state(technology);
 564         }
 565
 566         __connman_rfkill_block(technology->type, FALSE);
 567
 568         /*
 569          * An empty device list means that devices in the technology
 570          * were rfkill blocked. The unblock above will enable the devs.
 571          */
 572         if (technology->device_list == NULL) {
 573                 ret = 0;
 574                 goto done;
 575         }
 576
 577         for (list = technology->device_list; list; list = list->next) {
 578                 struct connman_device *device = list->data;
 579
 580                 err = __connman_device_enable(device);
 581                 /*
 582                  * err = 0 : Device was enabled right away.
 583                  * If atleast one device gets enabled, we consider
 584                  * the technology to be enabled.
 585                  */
 586                 if (err == 0)
 587                         ret = 0;
 588         }
 589
 590 done:
 591         if (ret == 0) {
 592                 if (msg != NULL)
 593                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 594                 return ret;
 595         }
 596
 597         if (msg != NULL) {
 598                 if (err == -EINPROGRESS) {
 599                         technology->pending_reply = dbus_message_ref(msg);
 600                         technology->pending_timeout = g_timeout_add_seconds(10,
 601                                         technology_pending_reply, technology);
 602                 } else {
 603                         reply = __connman_error_failed(msg, -err);
 604                         if (reply != NULL)
 605                                 g_dbus_send_message(connection, reply);
 606                 }
 607         }
 608
 609         return err;
 610 }
 611
 612 static int technology_disable(struct connman_technology *technology,
 613                 DBusMessage *msg)
 614 {
 615         GSList *list;
 616         int err = 0;
 617         int ret = -ENODEV;
 618         DBusMessage *reply;
 619
 620         DBG("technology %p disable", technology);
 621
 622         __sync_synchronize();
 623         if (technology->enabled == 0) {
 624                 err = -EALREADY;
 625                 goto done;
 626         }
 627
 628         if (technology->pending_reply != NULL) {
 629                 err = -EBUSY;
 630                 goto done;
 631         }
 632
 633         if (technology->tethering == TRUE)
 634                 set_tethering(technology, FALSE);
 635
 636         if (msg != NULL) {
 637                 technology->enable_persistent = FALSE;
 638                 save_state(technology);
 639         }
 640
 641         __connman_rfkill_block(technology->type, TRUE);
 642
 643         for (list = technology->device_list; list; list = list->next) {
 644                 struct connman_device *device = list->data;
 645
 646                 err = __connman_device_disable(device);
 647                 if (err == 0)
 648                         ret = 0;
 649         }
 650
 651 done:
 652         if (ret == 0) {
 653                 if (msg != NULL)
 654                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 655                 return ret;
 656         }
 657
 658         if (msg != NULL) {
 659                 if (err == -EINPROGRESS) {
 660                         technology->pending_reply = dbus_message_ref(msg);
 661                         technology->pending_timeout = g_timeout_add_seconds(10,
 662                                         technology_pending_reply, technology);
 663                 } else {
 664                         reply = __connman_error_failed(msg, -err);
 665                         if (reply != NULL)
 666                                 g_dbus_send_message(connection, reply);
 667                 }
 668         }
 669
 670         return err;
 671 }
 672
 673 static DBusMessage *set_property(DBusConnection *conn,
 674                                         DBusMessage *msg, void *data)
 675 {
 676         struct connman_technology *technology = data;
 677         DBusMessageIter iter, value;
 678         const char *name;
 679         int type;
 680
 681         DBG("conn %p", conn);
 682
 683         if (dbus_message_iter_init(msg, &iter) == FALSE)
 684                 return __connman_error_invalid_arguments(msg);
 685
 686         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 687                 return __connman_error_invalid_arguments(msg);
 688
 689         dbus_message_iter_get_basic(&iter, &name);
 690         dbus_message_iter_next(&iter);
 691
 692         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 693                 return __connman_error_invalid_arguments(msg);
 694
 695         dbus_message_iter_recurse(&iter, &value);
 696
 697         type = dbus_message_iter_get_arg_type(&value);
 698
 699         DBG("property %s", name);
 700
 701         if (g_str_equal(name, "Tethering") == TRUE) {
 702                 int err;
 703                 connman_bool_t tethering;
 704
 705                 if (type != DBUS_TYPE_BOOLEAN)
 706                         return __connman_error_invalid_arguments(msg);
 707
 708                 dbus_message_iter_get_basic(&value, &tethering);
 709
 710                 if (technology->tethering == tethering)
 711                         return __connman_error_in_progress(msg);
 712
 713                 err = set_tethering(technology, tethering);
 714                 if (err < 0)
 715                         return __connman_error_failed(msg, -err);
 716
 717         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 718                 const char *str;
 719
 720                 dbus_message_iter_get_basic(&value, &str);
 721
 722                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 723                         return __connman_error_not_supported(msg);
 724
 725                 technology->tethering_ident = g_strdup(str);
 726         } else if (g_str_equal(name, "TetheringPassphrase") == 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                 if (strlen(str) < 8)
 735                         return __connman_error_invalid_arguments(msg);
 736
 737                 technology->tethering_passphrase = g_strdup(str);
 738         } else if (g_str_equal(name, "Powered") == TRUE) {
 739                 connman_bool_t enable;
 740
 741                 if (type != DBUS_TYPE_BOOLEAN)
 742                         return __connman_error_invalid_arguments(msg);
 743
 744                 dbus_message_iter_get_basic(&value, &enable);
 745                 if (enable == TRUE)
 746                         technology_enable(technology, msg);
 747                 else
 748                         technology_disable(technology, msg);
 749
 750         } else
 751                 return __connman_error_invalid_property(msg);
 752
 753         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 754 }
 755
 756 static struct connman_technology *technology_find(enum connman_service_type type)
 757 {
 758         GSList *list;
 759
 760         DBG("type %d", type);
 761
 762         for (list = technology_list; list; list = list->next) {
 763                 struct connman_technology *technology = list->data;
 764
 765                 if (technology->type == type)
 766                         return technology;
 767         }
 768
 769         return NULL;
 770 }
 771
 772 static void reply_scan_pending(struct connman_technology *technology, int err)
 773 {
 774         DBusMessage *reply;
 775
 776         DBG("technology %p err %d", technology, err);
 777
 778         while (technology->scan_pending != NULL) {
 779                 DBusMessage *msg = technology->scan_pending->data;
 780
 781                 DBG("reply to %s", dbus_message_get_sender(msg));
 782
 783                 if (err == 0)
 784                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 785                 else
 786                         reply = __connman_error_failed(msg, -err);
 787                 g_dbus_send_message(connection, reply);
 788                 dbus_message_unref(msg);
 789
 790                 technology->scan_pending =
 791                         g_slist_delete_link(technology->scan_pending,
 792                                         technology->scan_pending);
 793         }
 794 }
 795
 796 void __connman_technology_scan_started(struct connman_device *device)
 797 {
 798         DBG("device %p", device);
 799 }
 800
 801 void __connman_technology_scan_stopped(struct connman_device *device)
 802 {
 803         int count = 0;
 804         struct connman_technology *technology;
 805         enum connman_service_type type;
 806         GSList *list;
 807
 808         type = __connman_device_get_service_type(device);
 809         technology = technology_find(type);
 810
 811         DBG("technology %p device %p", technology, device);
 812
 813         if (technology == NULL)
 814                 return;
 815
 816         for (list = technology->device_list; list != NULL; list = list->next) {
 817                 struct connman_device *other_device = list->data;
 818
 819                 if (device == other_device)
 820                         continue;
 821
 822                 if (__connman_device_get_service_type(other_device) != type)
 823                         continue;
 824
 825                 if (__connman_device_scanning(other_device))
 826                         count += 1;
 827         }
 828
 829         if (count == 0)
 830                 reply_scan_pending(technology, 0);
 831 }
 832
 833 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 834 {
 835         struct connman_technology *technology = data;
 836         int err;
 837
 838         DBG ("technology %p request from %s", technology,
 839                         dbus_message_get_sender(msg));
 840
 841         dbus_message_ref(msg);
 842         technology->scan_pending =
 843                 g_slist_prepend(technology->scan_pending, msg);
 844
 845         err = __connman_device_request_scan(technology->type);
 846         if (err < 0)
 847                 reply_scan_pending(technology, err);
 848
 849         return NULL;
 850 }
 851
 852 static GDBusMethodTable technology_methods[] = {
 853         { "GetProperties", "",   "a{sv}", get_properties },
 854         { "SetProperty",   "sv", "",      set_property   },
 855         { "Scan",          "",    "",     scan,
 856                                                 G_DBUS_METHOD_FLAG_ASYNC },
 857         { },
 858 };
 859
 860 static GDBusSignalTable technology_signals[] = {
 861         { "PropertyChanged", "sv" },
 862         { },
 863 };
 864
 865 static struct connman_technology *technology_get(enum connman_service_type type)
 866 {
 867         struct connman_technology *technology;
 868         struct connman_technology_driver *driver = NULL;
 869         const char *str;
 870         GSList *list;
 871         int err;
 872
 873         DBG("type %d", type);
 874
 875         str = __connman_service_type2string(type);
 876         if (str == NULL)
 877                 return NULL;
 878
 879         technology = technology_find(type);
 880         if (technology != NULL) {
 881                 __sync_fetch_and_add(&technology->refcount, 1);
 882                 return technology;
 883         }
 884
 885         /* First check if we have a driver for this technology type */
 886         for (list = driver_list; list; list = list->next) {
 887                 driver = list->data;
 888
 889                 if (driver->type == type)
 890                         break;
 891                 else
 892                         driver = NULL;
 893         }
 894
 895         if (driver == NULL) {
 896                 DBG("No matching driver found for %s.",
 897                                 __connman_service_type2string(type));
 898                 return NULL;
 899         }
 900
 901         technology = g_try_new0(struct connman_technology, 1);
 902         if (technology == NULL)
 903                 return NULL;
 904
 905         technology->refcount = 1;
 906
 907         technology->type = type;
 908         technology->path = g_strdup_printf("%s/technology/%s",
 909                                                         CONNMAN_PATH, str);
 910
 911         technology->device_list = NULL;
 912
 913         technology->pending_reply = NULL;
 914
 915         load_state(technology);
 916
 917         if (g_dbus_register_interface(connection, technology->path,
 918                                         CONNMAN_TECHNOLOGY_INTERFACE,
 919                                         technology_methods, technology_signals,
 920                                         NULL, technology, NULL) == FALSE) {
 921                 connman_error("Failed to register %s", technology->path);
 922                 g_free(technology);
 923                 return NULL;
 924         }
 925
 926         technology_list = g_slist_append(technology_list, technology);
 927
 928         technology_added_signal(technology);
 929
 930         technology->driver = driver;
 931         err = driver->probe(technology);
 932         if (err != 0)
 933                 DBG("Driver probe failed for technology %p", technology);
 934
 935         DBG("technology %p", technology);
 936
 937         return technology;
 938 }
 939
 940 static void technology_put(struct connman_technology *technology)
 941 {
 942         DBG("technology %p", technology);
 943
 944         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
 945                 return;
 946
 947         reply_scan_pending(technology, -EINTR);
 948
 949         if (technology->driver) {
 950                 technology->driver->remove(technology);
 951                 technology->driver = NULL;
 952         }
 953
 954         technology_list = g_slist_remove(technology_list, technology);
 955
 956         technology_removed_signal(technology);
 957
 958         g_dbus_unregister_interface(connection, technology->path,
 959                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 960
 961         g_slist_free(technology->device_list);
 962
 963         g_free(technology->path);
 964         g_free(technology->regdom);
 965         g_free(technology);
 966 }
 967
 968 void __connman_technology_add_interface(enum connman_service_type type,
 969                                 int index, const char *name, const char *ident)
 970 {
 971         struct connman_technology *technology;
 972
 973         switch (type) {
 974         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 975         case CONNMAN_SERVICE_TYPE_SYSTEM:
 976                 return;
 977         case CONNMAN_SERVICE_TYPE_ETHERNET:
 978         case CONNMAN_SERVICE_TYPE_WIFI:
 979         case CONNMAN_SERVICE_TYPE_WIMAX:
 980         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 981         case CONNMAN_SERVICE_TYPE_CELLULAR:
 982         case CONNMAN_SERVICE_TYPE_GPS:
 983         case CONNMAN_SERVICE_TYPE_VPN:
 984         case CONNMAN_SERVICE_TYPE_GADGET:
 985                 break;
 986         }
 987
 988         connman_info("Adding interface %s [ %s ]", name,
 989                                 __connman_service_type2string(type));
 990
 991         technology = technology_find(type);
 992
 993         if (technology == NULL || technology->driver == NULL
 994                         || technology->driver->add_interface == NULL)
 995                 return;
 996
 997         technology->driver->add_interface(technology,
 998                                         index, name, ident);
 999 }
1000
1001 void __connman_technology_remove_interface(enum connman_service_type type,
1002                                 int index, const char *name, const char *ident)
1003 {
1004         struct connman_technology *technology;
1005
1006         switch (type) {
1007         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1008         case CONNMAN_SERVICE_TYPE_SYSTEM:
1009                 return;
1010         case CONNMAN_SERVICE_TYPE_ETHERNET:
1011         case CONNMAN_SERVICE_TYPE_WIFI:
1012         case CONNMAN_SERVICE_TYPE_WIMAX:
1013         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1014         case CONNMAN_SERVICE_TYPE_CELLULAR:
1015         case CONNMAN_SERVICE_TYPE_GPS:
1016         case CONNMAN_SERVICE_TYPE_VPN:
1017         case CONNMAN_SERVICE_TYPE_GADGET:
1018                 break;
1019         }
1020
1021         connman_info("Remove interface %s [ %s ]", name,
1022                                 __connman_service_type2string(type));
1023
1024         technology = technology_find(type);
1025
1026         if (technology == NULL || technology->driver == NULL)
1027                 return;
1028
1029         if (technology->driver->remove_interface)
1030                 technology->driver->remove_interface(technology, index);
1031 }
1032
1033 int __connman_technology_add_device(struct connman_device *device)
1034 {
1035         struct connman_technology *technology;
1036         enum connman_service_type type;
1037
1038         DBG("device %p", device);
1039
1040         type = __connman_device_get_service_type(device);
1041
1042         technology = technology_get(type);
1043         if (technology == NULL) {
1044                 /*
1045                  * Since no driver can be found for this device at the moment we
1046                  * add it to the techless device list.
1047                 */
1048                 techless_device_list = g_slist_prepend(techless_device_list,
1049                                                                 device);
1050
1051                 return -ENXIO;
1052         }
1053
1054         if (technology->enable_persistent && !global_offlinemode) {
1055                 int err = __connman_device_enable(device);
1056                 /*
1057                  * connman_technology_add_device() calls __connman_device_enable()
1058                  * but since the device is already enabled, the calls does not
1059                  * propagate through to connman_technology_enabled via
1060                  * connman_device_set_powered.
1061                  */
1062                 if (err == -EALREADY)
1063                         __connman_technology_enabled(type);
1064         }
1065         /* if technology persistent state is offline */
1066         if (!technology->enable_persistent)
1067                 __connman_device_disable(device);
1068
1069         technology->device_list = g_slist_append(technology->device_list,
1070                                                                 device);
1071
1072         return 0;
1073 }
1074
1075 int __connman_technology_remove_device(struct connman_device *device)
1076 {
1077         struct connman_technology *technology;
1078         enum connman_service_type type;
1079
1080         DBG("device %p", device);
1081
1082         type = __connman_device_get_service_type(device);
1083
1084         technology = technology_find(type);
1085         if (technology == NULL) {
1086                 techless_device_list = g_slist_remove(techless_device_list,
1087                                                                 device);
1088                 return -ENXIO;
1089         }
1090
1091         if (__connman_device_scanning(device))
1092                 __connman_technology_scan_stopped(device);
1093
1094         technology->device_list = g_slist_remove(technology->device_list,
1095                                                                 device);
1096         technology_put(technology);
1097
1098         return 0;
1099 }
1100
1101 static void powered_changed(struct connman_technology *technology)
1102 {
1103         connman_bool_t powered;
1104
1105         __sync_synchronize();
1106         if (technology->enabled >0)
1107                 powered = TRUE;
1108         else
1109                 powered = FALSE;
1110
1111         connman_dbus_property_changed_basic(technology->path,
1112                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1113                         DBUS_TYPE_BOOLEAN, &powered);
1114 }
1115
1116 int __connman_technology_enabled(enum connman_service_type type)
1117 {
1118         struct connman_technology *technology;
1119
1120         technology = technology_find(type);
1121         if (technology == NULL)
1122                 return -ENXIO;
1123
1124         if (__sync_fetch_and_add(&technology->enabled, 1) == 0)
1125                 powered_changed(technology);
1126
1127         if (technology->pending_reply != NULL) {
1128                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1129                 dbus_message_unref(technology->pending_reply);
1130                 g_source_remove(technology->pending_timeout);
1131                 technology->pending_reply = NULL;
1132                 technology->pending_timeout = 0;
1133         }
1134
1135         return 0;
1136 }
1137
1138 int __connman_technology_disabled(enum connman_service_type type)
1139 {
1140         struct connman_technology *technology;
1141
1142         technology = technology_find(type);
1143         if (technology == NULL)
1144                 return -ENXIO;
1145
1146         if (technology->pending_reply != NULL) {
1147                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1148                 dbus_message_unref(technology->pending_reply);
1149                 g_source_remove(technology->pending_timeout);
1150                 technology->pending_reply = NULL;
1151                 technology->pending_timeout = 0;
1152         }
1153
1154         if (__sync_fetch_and_sub(&technology->enabled, 1) == 1)
1155                 powered_changed(technology);
1156
1157         return 0;
1158 }
1159
1160 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1161 {
1162         GSList *list;
1163         int err = -EINVAL;
1164
1165         if (global_offlinemode == offlinemode)
1166                 return 0;
1167
1168         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1169
1170         /*
1171          * This is a bit tricky. When you set offlinemode, there is no
1172          * way to differentiate between attempting offline mode and
1173          * resuming offlinemode from last saved profile. We need that
1174          * information in rfkill_update, otherwise it falls back on the
1175          * technology's persistent state. Hence we set the offline mode here
1176          * but save it & call the notifier only if its successful.
1177          */
1178
1179         global_offlinemode = offlinemode;
1180
1181         /* Traverse technology list, enable/disable each technology. */
1182         for (list = technology_list; list; list = list->next) {
1183                 struct connman_technology *technology = list->data;
1184
1185                 if (offlinemode)
1186                         err = technology_disable(technology, NULL);
1187
1188                 if (!offlinemode && technology->enable_persistent)
1189                         err = technology_enable(technology, NULL);
1190         }
1191
1192         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1193                 connman_technology_save_offlinemode();
1194                 __connman_notifier_offlinemode(offlinemode);
1195         } else
1196                 global_offlinemode = connman_technology_load_offlinemode();
1197
1198         return err;
1199 }
1200
1201 void __connman_technology_set_connected(enum connman_service_type type,
1202                 connman_bool_t connected)
1203 {
1204         struct connman_technology *technology;
1205
1206         technology = technology_find(type);
1207         if (technology == NULL)
1208                 return;
1209
1210         DBG("technology %p connected %d", technology, connected);
1211
1212         technology->connected = connected;
1213
1214         connman_dbus_property_changed_basic(technology->path,
1215                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1216                         DBUS_TYPE_BOOLEAN, &connected);
1217 }
1218
1219 int __connman_technology_add_rfkill(unsigned int index,
1220                                         enum connman_service_type type,
1221                                                 connman_bool_t softblock,
1222                                                 connman_bool_t hardblock)
1223 {
1224         struct connman_technology *technology;
1225         struct connman_rfkill *rfkill;
1226
1227         DBG("index %u type %d soft %u hard %u", index, type,
1228                                                         softblock, hardblock);
1229
1230         rfkill = g_hash_table_lookup(rfkill_list, &index);
1231         if (rfkill != NULL)
1232                 goto done;
1233
1234         rfkill = g_try_new0(struct connman_rfkill, 1);
1235         if (rfkill == NULL)
1236                 return -ENOMEM;
1237
1238         rfkill->index = index;
1239         rfkill->type = type;
1240         rfkill->softblock = softblock;
1241         rfkill->hardblock = hardblock;
1242
1243         g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
1244
1245 done:
1246         technology = technology_get(type);
1247         /* If there is no driver for this type, ignore it. */
1248         if (technology == NULL)
1249                 return -ENXIO;
1250
1251         if (hardblock) {
1252                 DBG("%s is switched off.", get_name(type));
1253                 return 0;
1254         }
1255
1256         /*
1257          * If Offline mode is on, we softblock the device if it isnt already.
1258          * If Offline mode is off, we rely on the persistent state of tech.
1259          */
1260         if (global_offlinemode) {
1261                 if (!softblock)
1262                         return __connman_rfkill_block(type, TRUE);
1263         } else {
1264                 if (technology->enable_persistent && softblock)
1265                         return __connman_rfkill_block(type, FALSE);
1266                 /* if technology persistent state is offline */
1267                 if (!technology->enable_persistent && !softblock)
1268                         return __connman_rfkill_block(type, TRUE);
1269         }
1270
1271         return 0;
1272 }
1273
1274 int __connman_technology_update_rfkill(unsigned int index,
1275                                         enum connman_service_type type,
1276                                                 connman_bool_t softblock,
1277                                                 connman_bool_t hardblock)
1278 {
1279         struct connman_technology *technology;
1280         struct connman_rfkill *rfkill;
1281
1282         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1283
1284         rfkill = g_hash_table_lookup(rfkill_list, &index);
1285         if (rfkill == NULL)
1286                 return -ENXIO;
1287
1288         if (rfkill->softblock == softblock &&
1289                 rfkill->hardblock == hardblock)
1290                 return 0;
1291
1292         rfkill->softblock = softblock;
1293         rfkill->hardblock = hardblock;
1294
1295         if (hardblock) {
1296                 DBG("%s is switched off.", get_name(type));
1297                 return 0;
1298         }
1299
1300         technology = technology_find(type);
1301         /* If there is no driver for this type, ignore it. */
1302         if (technology == NULL)
1303                 return -ENXIO;
1304
1305         if (!global_offlinemode) {
1306                 if (technology->enable_persistent && softblock)
1307                         return __connman_rfkill_block(type, FALSE);
1308                 if (!technology->enable_persistent && !softblock)
1309                         return __connman_rfkill_block(type, TRUE);
1310         }
1311
1312         return 0;
1313 }
1314
1315 int __connman_technology_remove_rfkill(unsigned int index,
1316                                         enum connman_service_type type)
1317 {
1318         struct connman_technology *technology;
1319         struct connman_rfkill *rfkill;
1320
1321         DBG("index %u", index);
1322
1323         rfkill = g_hash_table_lookup(rfkill_list, &index);
1324         if (rfkill == NULL)
1325                 return -ENXIO;
1326
1327         g_hash_table_remove(rfkill_list, &index);
1328
1329         technology = technology_find(type);
1330         if (technology == NULL)
1331                 return -ENXIO;
1332
1333         technology_put(technology);
1334
1335         return 0;
1336 }
1337
1338 int __connman_technology_init(void)
1339 {
1340         DBG("");
1341
1342         connection = connman_dbus_get_connection();
1343
1344         rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
1345                                                         NULL, free_rfkill);
1346
1347         global_offlinemode = connman_technology_load_offlinemode();
1348
1349         return 0;
1350 }
1351
1352 void __connman_technology_cleanup(void)
1353 {
1354         DBG("");
1355
1356         g_hash_table_destroy(rfkill_list);
1357
1358         dbus_connection_unref(connection);
1359 }