src/technology.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <string.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GSList *technology_list = NULL;
  36
  37 /*
  38  * List of devices with no technology associated with them either because of
  39  * no compiled in support or the driver is not yet loaded.
  40 */
  41 static GSList *techless_device_list = NULL;
  42 static GHashTable *rfkill_list;
  43
  44 static connman_bool_t global_offlinemode;
  45
  46 struct connman_rfkill {
  47         unsigned int index;
  48         enum connman_service_type type;
  49         connman_bool_t softblock;
  50         connman_bool_t hardblock;
  51 };
  52
  53 struct connman_technology {
  54         int refcount;
  55         enum connman_service_type type;
  56         char *path;
  57         GSList *device_list;
  58         int enabled;
  59         char *regdom;
  60         connman_bool_t connected;
  61
  62         connman_bool_t tethering;
  63         char *tethering_ident;
  64         char *tethering_passphrase;
  65
  66         connman_bool_t enable_persistent; /* Save the tech state */
  67
  68         struct connman_technology_driver *driver;
  69         void *driver_data;
  70
  71         DBusMessage *pending_reply;
  72         guint pending_timeout;
  73
  74         GSList *scan_pending;
  75 };
  76
  77 static GSList *driver_list = NULL;
  78
  79 static gint compare_priority(gconstpointer a, gconstpointer b)
  80 {
  81         const struct connman_technology_driver *driver1 = a;
  82         const struct connman_technology_driver *driver2 = b;
  83
  84         return driver2->priority - driver1->priority;
  85 }
  86
  87 static void rfkill_check(gpointer key, gpointer value, gpointer user_data)
  88 {
  89         struct connman_rfkill *rfkill = value;
  90         enum connman_service_type type = GPOINTER_TO_INT(user_data);
  91
  92         /* Calling _technology_rfkill_add will update the tech. */
  93         if (rfkill->type == type)
  94                 __connman_technology_add_rfkill(rfkill->index, type,
  95                                 rfkill->softblock, rfkill->hardblock);
  96 }
  97
  98 /**
  99  * connman_technology_driver_register:
 100  * @driver: Technology driver definition
 101  *
 102  * Register a new technology driver
 103  *
 104  * Returns: %0 on success
 105  */
 106 int connman_technology_driver_register(struct connman_technology_driver *driver)
 107 {
 108         GSList *list;
 109         struct connman_device *device;
 110         enum connman_service_type type;
 111
 112         DBG("Registering %s driver", driver->name);
 113
 114         driver_list = g_slist_insert_sorted(driver_list, driver,
 115                                                         compare_priority);
 116
 117         if (techless_device_list == NULL)
 118                 goto check_rfkill;
 119
 120         /*
 121          * Check for technology less devices if this driver
 122          * can service any of them.
 123         */
 124         for (list = techless_device_list; list; list = list->next) {
 125                 device = list->data;
 126
 127                 type = __connman_device_get_service_type(device);
 128                 if (type != driver->type)
 129                         continue;
 130
 131                 techless_device_list = g_slist_remove(techless_device_list,
 132                                                                 device);
 133
 134                 __connman_technology_add_device(device);
 135         }
 136
 137 check_rfkill:
 138         /* Check for orphaned rfkill switches. */
 139         g_hash_table_foreach(rfkill_list, rfkill_check,
 140                                         GINT_TO_POINTER(driver->type));
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * connman_technology_driver_unregister:
 147  * @driver: Technology driver definition
 148  *
 149  * Remove a previously registered technology driver
 150  */
 151 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 152 {
 153         GSList *list;
 154         struct connman_technology *technology;
 155
 156         DBG("Unregistering driver %p name %s", driver, driver->name);
 157
 158         for (list = technology_list; list; list = list->next) {
 159                 technology = list->data;
 160
 161                 if (technology->driver == NULL)
 162                         continue;
 163
 164                 if (technology->type == driver->type) {
 165                         technology->driver->remove(technology);
 166                         technology->driver = NULL;
 167                 }
 168         }
 169
 170         driver_list = g_slist_remove(driver_list, driver);
 171 }
 172
 173 static void tethering_changed(struct connman_technology *technology)
 174 {
 175         connman_bool_t tethering = technology->tethering;
 176
 177         connman_dbus_property_changed_basic(technology->path,
 178                                 CONNMAN_TECHNOLOGY_INTERFACE, "Tethering",
 179                                                 DBUS_TYPE_BOOLEAN, &tethering);
 180 }
 181
 182 void connman_technology_tethering_notify(struct connman_technology *technology,
 183                                                         connman_bool_t enabled)
 184 {
 185         GSList *list;
 186
 187         DBG("technology %p enabled %u", technology, enabled);
 188
 189         if (technology->tethering == enabled)
 190                 return;
 191
 192         technology->tethering = enabled;
 193
 194         tethering_changed(technology);
 195
 196         if (enabled == TRUE)
 197                 __connman_tethering_set_enabled();
 198         else {
 199                 for (list = technology_list; list; list = list->next) {
 200                         struct connman_technology *other_tech = list->data;
 201                         if (other_tech->tethering == TRUE)
 202                                 break;
 203                 }
 204                 if (list == NULL)
 205                         __connman_tethering_set_disabled();
 206         }
 207 }
 208
 209 static int set_tethering(struct connman_technology *technology,
 210                                 connman_bool_t enabled)
 211 {
 212         const char *ident, *passphrase, *bridge;
 213
 214         ident = technology->tethering_ident;
 215         passphrase = technology->tethering_passphrase;
 216
 217         if (technology->driver == NULL ||
 218                         technology->driver->set_tethering == NULL)
 219                 return -EOPNOTSUPP;
 220
 221         bridge = __connman_tethering_get_bridge();
 222         if (bridge == NULL)
 223                 return -EOPNOTSUPP;
 224
 225         if (technology->type == CONNMAN_SERVICE_TYPE_WIFI &&
 226             (ident == NULL || passphrase == NULL))
 227                 return -EINVAL;
 228
 229         return technology->driver->set_tethering(technology, ident, passphrase,
 230                                                         bridge, enabled);
 231 }
 232
 233 void connman_technology_regdom_notify(struct connman_technology *technology,
 234                                                         const char *alpha2)
 235 {
 236         DBG("");
 237
 238         if (alpha2 == NULL)
 239                 connman_error("Failed to set regulatory domain");
 240         else
 241                 DBG("Regulatory domain set to %s", alpha2);
 242
 243         g_free(technology->regdom);
 244         technology->regdom = g_strdup(alpha2);
 245 }
 246
 247 int connman_technology_set_regdom(const char *alpha2)
 248 {
 249         GSList *list;
 250
 251         for (list = technology_list; list; list = list->next) {
 252                 struct connman_technology *technology = list->data;
 253
 254                 if (technology->driver == NULL)
 255                         continue;
 256
 257                 if (technology->driver->set_regdom)
 258                         technology->driver->set_regdom(technology, alpha2);
 259         }
 260
 261         return 0;
 262 }
 263
 264 static void free_rfkill(gpointer data)
 265 {
 266         struct connman_rfkill *rfkill = data;
 267
 268         g_free(rfkill);
 269 }
 270
 271 static const char *get_name(enum connman_service_type type)
 272 {
 273         switch (type) {
 274         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 275         case CONNMAN_SERVICE_TYPE_SYSTEM:
 276         case CONNMAN_SERVICE_TYPE_GPS:
 277         case CONNMAN_SERVICE_TYPE_VPN:
 278         case CONNMAN_SERVICE_TYPE_GADGET:
 279                 break;
 280         case CONNMAN_SERVICE_TYPE_ETHERNET:
 281                 return "Wired";
 282         case CONNMAN_SERVICE_TYPE_WIFI:
 283                 return "WiFi";
 284         case CONNMAN_SERVICE_TYPE_WIMAX:
 285                 return "WiMAX";
 286         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 287                 return "Bluetooth";
 288         case CONNMAN_SERVICE_TYPE_CELLULAR:
 289                 return "Cellular";
 290         }
 291
 292         return NULL;
 293 }
 294
 295 static void save_state(struct connman_technology *technology)
 296 {
 297         GKeyFile *keyfile;
 298         gchar *identifier;
 299
 300         DBG("technology %p", technology);
 301
 302         keyfile = __connman_storage_load_global();
 303         if (keyfile == NULL)
 304                 keyfile = g_key_file_new();
 305
 306         identifier = g_strdup_printf("%s", get_name(technology->type));
 307         if (identifier == NULL)
 308                 goto done;
 309
 310         g_key_file_set_boolean(keyfile, identifier, "Enable",
 311                                 technology->enable_persistent);
 312
 313 done:
 314         g_free(identifier);
 315
 316         __connman_storage_save_global(keyfile);
 317
 318         g_key_file_free(keyfile);
 319
 320         return;
 321 }
 322
 323 static void load_state(struct connman_technology *technology)
 324 {
 325         GKeyFile *keyfile;
 326         gchar *identifier;
 327         GError *error = NULL;
 328         connman_bool_t enable;
 329
 330         DBG("technology %p", technology);
 331
 332         keyfile = __connman_storage_load_global();
 333         /* Fallback on disabling technology if file not found. */
 334         if (keyfile == NULL) {
 335                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 336                         /* We enable ethernet by default */
 337                         technology->enable_persistent = TRUE;
 338                 else
 339                         technology->enable_persistent = FALSE;
 340                 return;
 341         }
 342
 343         identifier = g_strdup_printf("%s", get_name(technology->type));
 344         if (identifier == NULL)
 345                 goto done;
 346
 347         enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
 348         if (error == NULL)
 349                 technology->enable_persistent = enable;
 350         else {
 351                 if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 352                         technology->enable_persistent = TRUE;
 353                 else
 354                         technology->enable_persistent = FALSE;
 355
 356                 save_state(technology);
 357                 g_clear_error(&error);
 358         }
 359 done:
 360         g_free(identifier);
 361
 362         g_key_file_free(keyfile);
 363
 364         return;
 365 }
 366
 367 connman_bool_t __connman_technology_get_offlinemode(void)
 368 {
 369         return global_offlinemode;
 370 }
 371
 372 static void connman_technology_save_offlinemode()
 373 {
 374         GKeyFile *keyfile;
 375
 376         keyfile = __connman_storage_load_global();
 377         if (keyfile == NULL)
 378                 keyfile = g_key_file_new();
 379
 380         g_key_file_set_boolean(keyfile, "global",
 381                                         "OfflineMode", global_offlinemode);
 382
 383         __connman_storage_save_global(keyfile);
 384
 385         g_key_file_free(keyfile);
 386
 387         return;
 388 }
 389
 390 static connman_bool_t connman_technology_load_offlinemode()
 391 {
 392         GKeyFile *keyfile;
 393         GError *error = NULL;
 394         connman_bool_t offlinemode;
 395
 396         /* If there is a error, we enable offlinemode */
 397         keyfile = __connman_storage_load_global();
 398         if (keyfile == NULL)
 399                 return FALSE;
 400
 401         offlinemode = g_key_file_get_boolean(keyfile, "global",
 402                                                 "OfflineMode", &error);
 403         if (error != NULL) {
 404                 offlinemode = FALSE;
 405                 g_clear_error(&error);
 406         }
 407
 408         g_key_file_free(keyfile);
 409
 410         return offlinemode;
 411 }
 412
 413 static void append_properties(DBusMessageIter *iter,
 414                 struct connman_technology *technology)
 415 {
 416         DBusMessageIter dict;
 417         const char *str;
 418         connman_bool_t powered;
 419
 420         connman_dbus_dict_open(iter, &dict);
 421
 422         str = get_name(technology->type);
 423         if (str != NULL)
 424                 connman_dbus_dict_append_basic(&dict, "Name",
 425                                                 DBUS_TYPE_STRING, &str);
 426
 427         str = __connman_service_type2string(technology->type);
 428         if (str != NULL)
 429                 connman_dbus_dict_append_basic(&dict, "Type",
 430                                                 DBUS_TYPE_STRING, &str);
 431
 432         __sync_synchronize();
 433         if (technology->enabled > 0)
 434                 powered = TRUE;
 435         else
 436                 powered = FALSE;
 437         connman_dbus_dict_append_basic(&dict, "Powered",
 438                                         DBUS_TYPE_BOOLEAN, &powered);
 439
 440         connman_dbus_dict_append_basic(&dict, "Connected",
 441                                         DBUS_TYPE_BOOLEAN,
 442                                         &technology->connected);
 443
 444         connman_dbus_dict_append_basic(&dict, "Tethering",
 445                                         DBUS_TYPE_BOOLEAN,
 446                                         &technology->tethering);
 447
 448         if (technology->tethering_ident != NULL)
 449                 connman_dbus_dict_append_basic(&dict, "TetheringIdentifier",
 450                                                 DBUS_TYPE_STRING,
 451                                                 &technology->tethering_ident);
 452
 453         if (technology->tethering_passphrase != NULL)
 454                 connman_dbus_dict_append_basic(&dict, "TetheringPassphrase",
 455                                                 DBUS_TYPE_STRING,
 456                                                 &technology->tethering_passphrase);
 457
 458         connman_dbus_dict_close(iter, &dict);
 459 }
 460
 461 static void technology_added_signal(struct connman_technology *technology)
 462 {
 463         DBusMessage *signal;
 464         DBusMessageIter iter;
 465
 466         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 467                         CONNMAN_MANAGER_INTERFACE, "TechnologyAdded");
 468         if (signal == NULL)
 469                 return;
 470
 471         dbus_message_iter_init_append(signal, &iter);
 472         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
 473                                                         &technology->path);
 474         append_properties(&iter, technology);
 475
 476         dbus_connection_send(connection, signal, NULL);
 477         dbus_message_unref(signal);
 478 }
 479
 480 static void technology_removed_signal(struct connman_technology *technology)
 481 {
 482         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 483                         CONNMAN_MANAGER_INTERFACE, "TechnologyRemoved",
 484                         DBUS_TYPE_OBJECT_PATH, &technology->path,
 485                         DBUS_TYPE_INVALID);
 486 }
 487
 488 static DBusMessage *get_properties(DBusConnection *conn,
 489                                         DBusMessage *message, void *user_data)
 490 {
 491         struct connman_technology *technology = user_data;
 492         DBusMessage *reply;
 493         DBusMessageIter iter;
 494
 495         reply = dbus_message_new_method_return(message);
 496         if (reply == NULL)
 497                 return NULL;
 498
 499         dbus_message_iter_init_append(reply, &iter);
 500         append_properties(&iter, technology);
 501
 502         return reply;
 503 }
 504
 505 void __connman_technology_list_struct(DBusMessageIter *array)
 506 {
 507         GSList *list;
 508         DBusMessageIter entry;
 509
 510         for (list = technology_list; list; list = list->next) {
 511                 struct connman_technology *technology = list->data;
 512
 513                 if (technology->path == NULL)
 514                         continue;
 515
 516                 dbus_message_iter_open_container(array, DBUS_TYPE_STRUCT,
 517                                 NULL, &entry);
 518                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
 519                                 &technology->path);
 520                 append_properties(&entry, technology);
 521                 dbus_message_iter_close_container(array, &entry);
 522         }
 523 }
 524
 525 static gboolean technology_pending_reply(gpointer user_data)
 526 {
 527         struct connman_technology *technology = user_data;
 528         DBusMessage *reply;
 529
 530         /* Power request timedout, send ETIMEDOUT. */
 531         if (technology->pending_reply != NULL) {
 532                 reply = __connman_error_failed(technology->pending_reply, ETIMEDOUT);
 533                 if (reply != NULL)
 534                         g_dbus_send_message(connection, reply);
 535
 536                 dbus_message_unref(technology->pending_reply);
 537                 technology->pending_reply = NULL;
 538                 technology->pending_timeout = 0;
 539         }
 540
 541         return FALSE;
 542 }
 543
 544 static int technology_enable(struct connman_technology *technology,
 545                 DBusMessage *msg)
 546 {
 547         GSList *list;
 548         int err = 0;
 549         int ret = -ENODEV;
 550         DBusMessage *reply;
 551
 552         DBG("technology %p enable", technology);
 553
 554         __sync_synchronize();
 555         if (technology->enabled > 0) {
 556                 err = -EALREADY;
 557                 goto done;
 558         }
 559
 560         if (technology->pending_reply != NULL) {
 561                 err = -EBUSY;
 562                 goto done;
 563         }
 564
 565         if (msg != NULL) {
 566                 /*
 567                  * This is a bit of a trick. When msg is not NULL it means
 568                  * thats technology_enable was invoked from the manager API.
 569                  * Hence we save the state here.
 570                  */
 571                 technology->enable_persistent = TRUE;
 572                 save_state(technology);
 573         }
 574
 575         __connman_rfkill_block(technology->type, FALSE);
 576
 577         /*
 578          * An empty device list means that devices in the technology
 579          * were rfkill blocked. The unblock above will enable the devs.
 580          */
 581         if (technology->device_list == NULL) {
 582                 ret = 0;
 583                 goto done;
 584         }
 585
 586         for (list = technology->device_list; list; list = list->next) {
 587                 struct connman_device *device = list->data;
 588
 589                 err = __connman_device_enable(device);
 590                 /*
 591                  * err = 0 : Device was enabled right away.
 592                  * If atleast one device gets enabled, we consider
 593                  * the technology to be enabled.
 594                  */
 595                 if (err == 0)
 596                         ret = 0;
 597         }
 598
 599 done:
 600         if (ret == 0) {
 601                 if (msg != NULL)
 602                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 603                 return ret;
 604         }
 605
 606         if (msg != NULL) {
 607                 if (err == -EINPROGRESS) {
 608                         technology->pending_reply = dbus_message_ref(msg);
 609                         technology->pending_timeout = g_timeout_add_seconds(10,
 610                                         technology_pending_reply, technology);
 611                 } else {
 612                         if (err == -EALREADY)
 613                                 reply = __connman_error_already_enabled(msg);
 614                         else
 615                                 reply = __connman_error_failed(msg, -err);
 616                         if (reply != NULL)
 617                                 g_dbus_send_message(connection, reply);
 618                 }
 619         }
 620
 621         return err;
 622 }
 623
 624 static int technology_disable(struct connman_technology *technology,
 625                 DBusMessage *msg)
 626 {
 627         GSList *list;
 628         int err = 0;
 629         int ret = -ENODEV;
 630         DBusMessage *reply;
 631
 632         DBG("technology %p disable", technology);
 633
 634         __sync_synchronize();
 635         if (technology->enabled == 0) {
 636                 err = -EALREADY;
 637                 goto done;
 638         }
 639
 640         if (technology->pending_reply != NULL) {
 641                 err = -EBUSY;
 642                 goto done;
 643         }
 644
 645         if (technology->tethering == TRUE)
 646                 set_tethering(technology, FALSE);
 647
 648         if (msg != NULL) {
 649                 technology->enable_persistent = FALSE;
 650                 save_state(technology);
 651         }
 652
 653         __connman_rfkill_block(technology->type, TRUE);
 654
 655         for (list = technology->device_list; list; list = list->next) {
 656                 struct connman_device *device = list->data;
 657
 658                 err = __connman_device_disable(device);
 659                 if (err == 0)
 660                         ret = 0;
 661         }
 662
 663 done:
 664         if (ret == 0) {
 665                 if (msg != NULL)
 666                         g_dbus_send_reply(connection, msg, DBUS_TYPE_INVALID);
 667                 return ret;
 668         }
 669
 670         if (msg != NULL) {
 671                 if (err == -EINPROGRESS) {
 672                         technology->pending_reply = dbus_message_ref(msg);
 673                         technology->pending_timeout = g_timeout_add_seconds(10,
 674                                         technology_pending_reply, technology);
 675                 } else {
 676                         reply = __connman_error_failed(msg, -err);
 677                         if (reply != NULL)
 678                                 g_dbus_send_message(connection, reply);
 679                 }
 680         }
 681
 682         return err;
 683 }
 684
 685 static DBusMessage *set_property(DBusConnection *conn,
 686                                         DBusMessage *msg, void *data)
 687 {
 688         struct connman_technology *technology = data;
 689         DBusMessageIter iter, value;
 690         const char *name;
 691         int type;
 692
 693         DBG("conn %p", conn);
 694
 695         if (dbus_message_iter_init(msg, &iter) == FALSE)
 696                 return __connman_error_invalid_arguments(msg);
 697
 698         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 699                 return __connman_error_invalid_arguments(msg);
 700
 701         dbus_message_iter_get_basic(&iter, &name);
 702         dbus_message_iter_next(&iter);
 703
 704         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 705                 return __connman_error_invalid_arguments(msg);
 706
 707         dbus_message_iter_recurse(&iter, &value);
 708
 709         type = dbus_message_iter_get_arg_type(&value);
 710
 711         DBG("property %s", name);
 712
 713         if (g_str_equal(name, "Tethering") == TRUE) {
 714                 int err;
 715                 connman_bool_t tethering;
 716
 717                 if (type != DBUS_TYPE_BOOLEAN)
 718                         return __connman_error_invalid_arguments(msg);
 719
 720                 dbus_message_iter_get_basic(&value, &tethering);
 721
 722                 if (technology->tethering == tethering)
 723                         return __connman_error_in_progress(msg);
 724
 725                 err = set_tethering(technology, tethering);
 726                 if (err < 0)
 727                         return __connman_error_failed(msg, -err);
 728
 729         } else if (g_str_equal(name, "TetheringIdentifier") == TRUE) {
 730                 const char *str;
 731
 732                 dbus_message_iter_get_basic(&value, &str);
 733
 734                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 735                         return __connman_error_not_supported(msg);
 736
 737                 technology->tethering_ident = g_strdup(str);
 738         } else if (g_str_equal(name, "TetheringPassphrase") == TRUE) {
 739                 const char *str;
 740
 741                 dbus_message_iter_get_basic(&value, &str);
 742
 743                 if (technology->type != CONNMAN_SERVICE_TYPE_WIFI)
 744                         return __connman_error_not_supported(msg);
 745
 746                 if (strlen(str) < 8)
 747                         return __connman_error_invalid_arguments(msg);
 748
 749                 technology->tethering_passphrase = g_strdup(str);
 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                 if (enable == TRUE)
 758                         technology_enable(technology, msg);
 759                 else
 760                         technology_disable(technology, msg);
 761
 762         } else
 763                 return __connman_error_invalid_property(msg);
 764
 765         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 766 }
 767
 768 static struct connman_technology *technology_find(enum connman_service_type type)
 769 {
 770         GSList *list;
 771
 772         DBG("type %d", type);
 773
 774         for (list = technology_list; list; list = list->next) {
 775                 struct connman_technology *technology = list->data;
 776
 777                 if (technology->type == type)
 778                         return technology;
 779         }
 780
 781         return NULL;
 782 }
 783
 784 static void reply_scan_pending(struct connman_technology *technology, int err)
 785 {
 786         DBusMessage *reply;
 787
 788         DBG("technology %p err %d", technology, err);
 789
 790         while (technology->scan_pending != NULL) {
 791                 DBusMessage *msg = technology->scan_pending->data;
 792
 793                 DBG("reply to %s", dbus_message_get_sender(msg));
 794
 795                 if (err == 0)
 796                         reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 797                 else
 798                         reply = __connman_error_failed(msg, -err);
 799                 g_dbus_send_message(connection, reply);
 800                 dbus_message_unref(msg);
 801
 802                 technology->scan_pending =
 803                         g_slist_delete_link(technology->scan_pending,
 804                                         technology->scan_pending);
 805         }
 806 }
 807
 808 void __connman_technology_scan_started(struct connman_device *device)
 809 {
 810         DBG("device %p", device);
 811 }
 812
 813 void __connman_technology_scan_stopped(struct connman_device *device)
 814 {
 815         int count = 0;
 816         struct connman_technology *technology;
 817         enum connman_service_type type;
 818         GSList *list;
 819
 820         type = __connman_device_get_service_type(device);
 821         technology = technology_find(type);
 822
 823         DBG("technology %p device %p", technology, device);
 824
 825         if (technology == NULL)
 826                 return;
 827
 828         for (list = technology->device_list; list != NULL; list = list->next) {
 829                 struct connman_device *other_device = list->data;
 830
 831                 if (device == other_device)
 832                         continue;
 833
 834                 if (__connman_device_get_service_type(other_device) != type)
 835                         continue;
 836
 837                 if (connman_device_get_scanning(other_device) == TRUE)
 838                         count += 1;
 839         }
 840
 841         if (count == 0)
 842                 reply_scan_pending(technology, 0);
 843 }
 844
 845 static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
 846 {
 847         struct connman_technology *technology = data;
 848         int err;
 849
 850         DBG ("technology %p request from %s", technology,
 851                         dbus_message_get_sender(msg));
 852
 853         dbus_message_ref(msg);
 854         technology->scan_pending =
 855                 g_slist_prepend(technology->scan_pending, msg);
 856
 857         err = __connman_device_request_scan(technology->type);
 858         if (err < 0)
 859                 reply_scan_pending(technology, err);
 860
 861         return NULL;
 862 }
 863
 864 static const GDBusMethodTable technology_methods[] = {
 865         { GDBUS_DEPRECATED_METHOD("GetProperties",
 866                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 867                         get_properties) },
 868         { GDBUS_METHOD("SetProperty",
 869                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 870                         NULL, set_property) },
 871         { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
 872         { },
 873 };
 874
 875 static const GDBusSignalTable technology_signals[] = {
 876         { GDBUS_SIGNAL("PropertyChanged",
 877                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 878         { },
 879 };
 880
 881 static struct connman_technology *technology_get(enum connman_service_type type)
 882 {
 883         struct connman_technology *technology;
 884         struct connman_technology_driver *driver = NULL;
 885         const char *str;
 886         GSList *list;
 887         int err;
 888
 889         DBG("type %d", type);
 890
 891         str = __connman_service_type2string(type);
 892         if (str == NULL)
 893                 return NULL;
 894
 895         technology = technology_find(type);
 896         if (technology != NULL) {
 897                 __sync_fetch_and_add(&technology->refcount, 1);
 898                 return technology;
 899         }
 900
 901         /* First check if we have a driver for this technology type */
 902         for (list = driver_list; list; list = list->next) {
 903                 driver = list->data;
 904
 905                 if (driver->type == type)
 906                         break;
 907                 else
 908                         driver = NULL;
 909         }
 910
 911         if (driver == NULL) {
 912                 DBG("No matching driver found for %s.",
 913                                 __connman_service_type2string(type));
 914                 return NULL;
 915         }
 916
 917         technology = g_try_new0(struct connman_technology, 1);
 918         if (technology == NULL)
 919                 return NULL;
 920
 921         technology->refcount = 1;
 922
 923         technology->type = type;
 924         technology->path = g_strdup_printf("%s/technology/%s",
 925                                                         CONNMAN_PATH, str);
 926
 927         technology->device_list = NULL;
 928
 929         technology->pending_reply = NULL;
 930
 931         load_state(technology);
 932
 933         if (g_dbus_register_interface(connection, technology->path,
 934                                         CONNMAN_TECHNOLOGY_INTERFACE,
 935                                         technology_methods, technology_signals,
 936                                         NULL, technology, NULL) == FALSE) {
 937                 connman_error("Failed to register %s", technology->path);
 938                 g_free(technology);
 939                 return NULL;
 940         }
 941
 942         technology_list = g_slist_append(technology_list, technology);
 943
 944         technology_added_signal(technology);
 945
 946         technology->driver = driver;
 947         err = driver->probe(technology);
 948         if (err != 0)
 949                 DBG("Driver probe failed for technology %p", technology);
 950
 951         DBG("technology %p", technology);
 952
 953         return technology;
 954 }
 955
 956 static void technology_put(struct connman_technology *technology)
 957 {
 958         DBG("technology %p", technology);
 959
 960         if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
 961                 return;
 962
 963         reply_scan_pending(technology, -EINTR);
 964
 965         if (technology->driver) {
 966                 technology->driver->remove(technology);
 967                 technology->driver = NULL;
 968         }
 969
 970         technology_list = g_slist_remove(technology_list, technology);
 971
 972         technology_removed_signal(technology);
 973
 974         g_dbus_unregister_interface(connection, technology->path,
 975                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 976
 977         g_slist_free(technology->device_list);
 978
 979         g_free(technology->path);
 980         g_free(technology->regdom);
 981         g_free(technology);
 982 }
 983
 984 void __connman_technology_add_interface(enum connman_service_type type,
 985                                 int index, const char *name, const char *ident)
 986 {
 987         struct connman_technology *technology;
 988
 989         switch (type) {
 990         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 991         case CONNMAN_SERVICE_TYPE_SYSTEM:
 992                 return;
 993         case CONNMAN_SERVICE_TYPE_ETHERNET:
 994         case CONNMAN_SERVICE_TYPE_WIFI:
 995         case CONNMAN_SERVICE_TYPE_WIMAX:
 996         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 997         case CONNMAN_SERVICE_TYPE_CELLULAR:
 998         case CONNMAN_SERVICE_TYPE_GPS:
 999         case CONNMAN_SERVICE_TYPE_VPN:
1000         case CONNMAN_SERVICE_TYPE_GADGET:
1001                 break;
1002         }
1003
1004         connman_info("Adding interface %s [ %s ]", name,
1005                                 __connman_service_type2string(type));
1006
1007         technology = technology_find(type);
1008
1009         if (technology == NULL || technology->driver == NULL
1010                         || technology->driver->add_interface == NULL)
1011                 return;
1012
1013         technology->driver->add_interface(technology,
1014                                         index, name, ident);
1015 }
1016
1017 void __connman_technology_remove_interface(enum connman_service_type type,
1018                                 int index, const char *name, const char *ident)
1019 {
1020         struct connman_technology *technology;
1021
1022         switch (type) {
1023         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1024         case CONNMAN_SERVICE_TYPE_SYSTEM:
1025                 return;
1026         case CONNMAN_SERVICE_TYPE_ETHERNET:
1027         case CONNMAN_SERVICE_TYPE_WIFI:
1028         case CONNMAN_SERVICE_TYPE_WIMAX:
1029         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1030         case CONNMAN_SERVICE_TYPE_CELLULAR:
1031         case CONNMAN_SERVICE_TYPE_GPS:
1032         case CONNMAN_SERVICE_TYPE_VPN:
1033         case CONNMAN_SERVICE_TYPE_GADGET:
1034                 break;
1035         }
1036
1037         connman_info("Remove interface %s [ %s ]", name,
1038                                 __connman_service_type2string(type));
1039
1040         technology = technology_find(type);
1041
1042         if (technology == NULL || technology->driver == NULL)
1043                 return;
1044
1045         if (technology->driver->remove_interface)
1046                 technology->driver->remove_interface(technology, index);
1047 }
1048
1049 int __connman_technology_add_device(struct connman_device *device)
1050 {
1051         struct connman_technology *technology;
1052         enum connman_service_type type;
1053
1054         DBG("device %p", device);
1055
1056         type = __connman_device_get_service_type(device);
1057
1058         technology = technology_get(type);
1059         if (technology == NULL) {
1060                 /*
1061                  * Since no driver can be found for this device at the moment we
1062                  * add it to the techless device list.
1063                 */
1064                 techless_device_list = g_slist_prepend(techless_device_list,
1065                                                                 device);
1066
1067                 return -ENXIO;
1068         }
1069
1070         if (technology->enable_persistent && !global_offlinemode) {
1071                 int err = __connman_device_enable(device);
1072                 /*
1073                  * connman_technology_add_device() calls __connman_device_enable()
1074                  * but since the device is already enabled, the calls does not
1075                  * propagate through to connman_technology_enabled via
1076                  * connman_device_set_powered.
1077                  */
1078                 if (err == -EALREADY)
1079                         __connman_technology_enabled(type);
1080         }
1081         /* if technology persistent state is offline */
1082         if (!technology->enable_persistent)
1083                 __connman_device_disable(device);
1084
1085         technology->device_list = g_slist_append(technology->device_list,
1086                                                                 device);
1087
1088         return 0;
1089 }
1090
1091 int __connman_technology_remove_device(struct connman_device *device)
1092 {
1093         struct connman_technology *technology;
1094         enum connman_service_type type;
1095
1096         DBG("device %p", device);
1097
1098         type = __connman_device_get_service_type(device);
1099
1100         technology = technology_find(type);
1101         if (technology == NULL) {
1102                 techless_device_list = g_slist_remove(techless_device_list,
1103                                                                 device);
1104                 return -ENXIO;
1105         }
1106
1107         technology->device_list = g_slist_remove(technology->device_list,
1108                                                                 device);
1109         technology_put(technology);
1110
1111         return 0;
1112 }
1113
1114 static void powered_changed(struct connman_technology *technology)
1115 {
1116         connman_bool_t powered;
1117
1118         __sync_synchronize();
1119         if (technology->enabled >0)
1120                 powered = TRUE;
1121         else
1122                 powered = FALSE;
1123
1124         connman_dbus_property_changed_basic(technology->path,
1125                         CONNMAN_TECHNOLOGY_INTERFACE, "Powered",
1126                         DBUS_TYPE_BOOLEAN, &powered);
1127 }
1128
1129 int __connman_technology_enabled(enum connman_service_type type)
1130 {
1131         struct connman_technology *technology;
1132
1133         technology = technology_find(type);
1134         if (technology == NULL)
1135                 return -ENXIO;
1136
1137         if (__sync_fetch_and_add(&technology->enabled, 1) != 0)
1138                 return -EALREADY;
1139
1140         powered_changed(technology);
1141
1142         if (technology->pending_reply != NULL) {
1143                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1144                 dbus_message_unref(technology->pending_reply);
1145                 g_source_remove(technology->pending_timeout);
1146                 technology->pending_reply = NULL;
1147                 technology->pending_timeout = 0;
1148         }
1149
1150         return 0;
1151 }
1152
1153 int __connman_technology_disabled(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_sub(&technology->enabled, 1) != 1)
1162                 return -EINPROGRESS;
1163
1164         if (technology->pending_reply != NULL) {
1165                 g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
1166                 dbus_message_unref(technology->pending_reply);
1167                 g_source_remove(technology->pending_timeout);
1168                 technology->pending_reply = NULL;
1169                 technology->pending_timeout = 0;
1170         }
1171
1172         powered_changed(technology);
1173
1174         return 0;
1175 }
1176
1177 int __connman_technology_set_offlinemode(connman_bool_t offlinemode)
1178 {
1179         GSList *list;
1180         int err = -EINVAL;
1181
1182         if (global_offlinemode == offlinemode)
1183                 return 0;
1184
1185         DBG("offlinemode %s", offlinemode ? "On" : "Off");
1186
1187         /*
1188          * This is a bit tricky. When you set offlinemode, there is no
1189          * way to differentiate between attempting offline mode and
1190          * resuming offlinemode from last saved profile. We need that
1191          * information in rfkill_update, otherwise it falls back on the
1192          * technology's persistent state. Hence we set the offline mode here
1193          * but save it & call the notifier only if its successful.
1194          */
1195
1196         global_offlinemode = offlinemode;
1197
1198         /* Traverse technology list, enable/disable each technology. */
1199         for (list = technology_list; list; list = list->next) {
1200                 struct connman_technology *technology = list->data;
1201
1202                 if (offlinemode)
1203                         err = technology_disable(technology, NULL);
1204
1205                 if (!offlinemode && technology->enable_persistent)
1206                         err = technology_enable(technology, NULL);
1207         }
1208
1209         if (err == 0 || err == -EINPROGRESS || err == -EALREADY) {
1210                 connman_technology_save_offlinemode();
1211                 __connman_notifier_offlinemode(offlinemode);
1212         } else
1213                 global_offlinemode = connman_technology_load_offlinemode();
1214
1215         return err;
1216 }
1217
1218 void __connman_technology_set_connected(enum connman_service_type type,
1219                 connman_bool_t connected)
1220 {
1221         struct connman_technology *technology;
1222
1223         technology = technology_find(type);
1224         if (technology == NULL)
1225                 return;
1226
1227         DBG("technology %p connected %d", technology, connected);
1228
1229         technology->connected = connected;
1230
1231         connman_dbus_property_changed_basic(technology->path,
1232                         CONNMAN_TECHNOLOGY_INTERFACE, "Connected",
1233                         DBUS_TYPE_BOOLEAN, &connected);
1234 }
1235
1236 int __connman_technology_add_rfkill(unsigned int index,
1237                                         enum connman_service_type type,
1238                                                 connman_bool_t softblock,
1239                                                 connman_bool_t hardblock)
1240 {
1241         struct connman_technology *technology;
1242         struct connman_rfkill *rfkill;
1243
1244         DBG("index %u type %d soft %u hard %u", index, type,
1245                                                         softblock, hardblock);
1246
1247         rfkill = g_hash_table_lookup(rfkill_list, &index);
1248         if (rfkill != NULL)
1249                 goto done;
1250
1251         rfkill = g_try_new0(struct connman_rfkill, 1);
1252         if (rfkill == NULL)
1253                 return -ENOMEM;
1254
1255         rfkill->index = index;
1256         rfkill->type = type;
1257         rfkill->softblock = softblock;
1258         rfkill->hardblock = hardblock;
1259
1260         g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
1261
1262 done:
1263         technology = technology_get(type);
1264         /* If there is no driver for this type, ignore it. */
1265         if (technology == NULL)
1266                 return -ENXIO;
1267
1268         if (hardblock) {
1269                 DBG("%s is switched off.", get_name(type));
1270                 return 0;
1271         }
1272
1273         /*
1274          * If Offline mode is on, we softblock the device if it isnt already.
1275          * If Offline mode is off, we rely on the persistent state of tech.
1276          */
1277         if (global_offlinemode) {
1278                 if (!softblock)
1279                         return __connman_rfkill_block(type, TRUE);
1280         } else {
1281                 if (technology->enable_persistent && softblock)
1282                         return __connman_rfkill_block(type, FALSE);
1283                 /* if technology persistent state is offline */
1284                 if (!technology->enable_persistent && !softblock)
1285                         return __connman_rfkill_block(type, TRUE);
1286         }
1287
1288         return 0;
1289 }
1290
1291 int __connman_technology_update_rfkill(unsigned int index,
1292                                         enum connman_service_type type,
1293                                                 connman_bool_t softblock,
1294                                                 connman_bool_t hardblock)
1295 {
1296         struct connman_technology *technology;
1297         struct connman_rfkill *rfkill;
1298
1299         DBG("index %u soft %u hard %u", index, softblock, hardblock);
1300
1301         rfkill = g_hash_table_lookup(rfkill_list, &index);
1302         if (rfkill == NULL)
1303                 return -ENXIO;
1304
1305         if (rfkill->softblock == softblock &&
1306                 rfkill->hardblock == hardblock)
1307                 return 0;
1308
1309         rfkill->softblock = softblock;
1310         rfkill->hardblock = hardblock;
1311
1312         if (hardblock) {
1313                 DBG("%s is switched off.", get_name(type));
1314                 return 0;
1315         }
1316
1317         technology = technology_find(type);
1318         /* If there is no driver for this type, ignore it. */
1319         if (technology == NULL)
1320                 return -ENXIO;
1321
1322         if (!global_offlinemode) {
1323                 if (technology->enable_persistent && softblock)
1324                         return __connman_rfkill_block(type, FALSE);
1325                 if (!technology->enable_persistent && !softblock)
1326                         return __connman_rfkill_block(type, TRUE);
1327         }
1328
1329         return 0;
1330 }
1331
1332 int __connman_technology_remove_rfkill(unsigned int index,
1333                                         enum connman_service_type type)
1334 {
1335         struct connman_technology *technology;
1336         struct connman_rfkill *rfkill;
1337
1338         DBG("index %u", index);
1339
1340         rfkill = g_hash_table_lookup(rfkill_list, &index);
1341         if (rfkill == NULL)
1342                 return -ENXIO;
1343
1344         g_hash_table_remove(rfkill_list, &index);
1345
1346         technology = technology_find(type);
1347         if (technology == NULL)
1348                 return -ENXIO;
1349
1350         technology_put(technology);
1351
1352         return 0;
1353 }
1354
1355 int __connman_technology_init(void)
1356 {
1357         DBG("");
1358
1359         connection = connman_dbus_get_connection();
1360
1361         rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
1362                                                         NULL, free_rfkill);
1363
1364         global_offlinemode = connman_technology_load_offlinemode();
1365
1366         /* This will create settings file if it is missing */
1367         connman_technology_save_offlinemode();
1368
1369         return 0;
1370 }
1371
1372 void __connman_technology_cleanup(void)
1373 {
1374         DBG("");
1375
1376         g_hash_table_destroy(rfkill_list);
1377
1378         dbus_connection_unref(connection);
1379 }