src/device.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 "connman.h"
  30
  31 struct connman_device {
  32         struct connman_element element;
  33         enum connman_device_type type;
  34         connman_bool_t offlinemode;
  35         connman_bool_t blocked;
  36         connman_bool_t powered;
  37         connman_bool_t powered_pending;
  38         connman_bool_t powered_persistent;
  39         connman_bool_t scanning;
  40         connman_bool_t disconnected;
  41         connman_bool_t reconnect;
  42         connman_uint16_t scan_interval;
  43         char *name;
  44         char *node;
  45         char *address;
  46         char *interface;
  47         char *control;
  48         char *ident;
  49         int phyindex;
  50         unsigned int connections;
  51         guint scan_timeout;
  52
  53         struct connman_device_driver *driver;
  54         void *driver_data;
  55
  56         char *last_network;
  57         struct connman_network *network;
  58         GHashTable *networks;
  59 };
  60
  61 static gboolean device_scan_trigger(gpointer user_data)
  62 {
  63         struct connman_device *device = user_data;
  64
  65         DBG("device %p", device);
  66
  67         if (device->driver == NULL) {
  68                 device->scan_timeout = 0;
  69                 return FALSE;
  70         }
  71
  72         if (device->driver->scan)
  73                 device->driver->scan(device);
  74
  75         return TRUE;
  76 }
  77
  78 static void clear_scan_trigger(struct connman_device *device)
  79 {
  80         if (device->scan_timeout > 0) {
  81                 g_source_remove(device->scan_timeout);
  82                 device->scan_timeout = 0;
  83         }
  84 }
  85
  86 static void reset_scan_trigger(struct connman_device *device)
  87 {
  88         clear_scan_trigger(device);
  89
  90         if (device->scan_interval > 0) {
  91                 guint interval = device->scan_interval;
  92                 device->scan_timeout = g_timeout_add_seconds(interval,
  93                                         device_scan_trigger, device);
  94         }
  95 }
  96
  97 static void force_scan_trigger(struct connman_device *device)
  98 {
  99         clear_scan_trigger(device);
 100
 101         device->scan_timeout = g_timeout_add_seconds(5,
 102                                         device_scan_trigger, device);
 103 }
 104
 105 void connman_device_schedule_scan(struct connman_device *device)
 106 {
 107         reset_scan_trigger(device);
 108 }
 109
 110 static const char *type2description(enum connman_device_type type)
 111 {
 112         switch (type) {
 113         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 114         case CONNMAN_DEVICE_TYPE_VENDOR:
 115                 break;
 116         case CONNMAN_DEVICE_TYPE_ETHERNET:
 117                 return "Ethernet";
 118         case CONNMAN_DEVICE_TYPE_WIFI:
 119                 return "Wireless";
 120         case CONNMAN_DEVICE_TYPE_WIMAX:
 121                 return "WiMAX";
 122         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 123                 return "Bluetooth";
 124         case CONNMAN_DEVICE_TYPE_GPS:
 125                 return "GPS";
 126         case CONNMAN_DEVICE_TYPE_CELLULAR:
 127                 return "Cellular";
 128         }
 129
 130         return NULL;
 131 }
 132
 133 static const char *type2string(enum connman_device_type type)
 134 {
 135         switch (type) {
 136         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 137         case CONNMAN_DEVICE_TYPE_VENDOR:
 138                 break;
 139         case CONNMAN_DEVICE_TYPE_ETHERNET:
 140                 return "ethernet";
 141         case CONNMAN_DEVICE_TYPE_WIFI:
 142                 return "wifi";
 143         case CONNMAN_DEVICE_TYPE_WIMAX:
 144                 return "wimax";
 145         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 146                 return "bluetooth";
 147         case CONNMAN_DEVICE_TYPE_GPS:
 148                 return "gps";
 149         case CONNMAN_DEVICE_TYPE_CELLULAR:
 150                 return "cellular";
 151         }
 152
 153         return NULL;
 154 }
 155
 156 enum connman_service_type __connman_device_get_service_type(struct connman_device *device)
 157 {
 158         enum connman_device_type type = connman_device_get_type(device);
 159
 160         switch (type) {
 161         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 162         case CONNMAN_DEVICE_TYPE_VENDOR:
 163         case CONNMAN_DEVICE_TYPE_GPS:
 164                 break;
 165         case CONNMAN_DEVICE_TYPE_ETHERNET:
 166                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 167         case CONNMAN_DEVICE_TYPE_WIFI:
 168                 return CONNMAN_SERVICE_TYPE_WIFI;
 169         case CONNMAN_DEVICE_TYPE_WIMAX:
 170                 return CONNMAN_SERVICE_TYPE_WIMAX;
 171         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 172                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 173         case CONNMAN_DEVICE_TYPE_CELLULAR:
 174                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 175         }
 176
 177         return CONNMAN_SERVICE_TYPE_UNKNOWN;
 178 }
 179
 180 int __connman_device_enable(struct connman_device *device)
 181 {
 182         int err;
 183
 184         DBG("device %p %d", device, device->blocked);
 185
 186         if (!device->driver || !device->driver->enable)
 187                 return -EOPNOTSUPP;
 188
 189         if (device->powered_pending == TRUE)
 190                 return -EALREADY;
 191
 192         if (device->blocked == TRUE)
 193                 return -ENOLINK;
 194
 195         err = device->driver->enable(device);
 196         if (err < 0) {
 197                 if (err == -EINPROGRESS) {
 198                         device->powered_pending = TRUE;
 199                         device->offlinemode = FALSE;
 200                         if (__connman_profile_get_offlinemode() == TRUE)
 201                                 __connman_profile_set_offlinemode(FALSE, FALSE);
 202                 }
 203                 return err;
 204         }
 205
 206         device->powered_pending = TRUE;
 207         device->powered = TRUE;
 208         device->offlinemode = FALSE;
 209         if (__connman_profile_get_offlinemode() == TRUE)
 210                 __connman_profile_set_offlinemode(FALSE, FALSE);
 211
 212         __connman_technology_enable_device(device);
 213
 214         return 0;
 215 }
 216
 217 int __connman_device_disable(struct connman_device *device)
 218 {
 219         int err;
 220
 221         DBG("device %p", device);
 222
 223         if (!device->driver || !device->driver->disable)
 224                 return -EOPNOTSUPP;
 225
 226         if (device->powered == FALSE)
 227                 return -ENOLINK;
 228
 229         if (device->powered_pending == FALSE)
 230                 return -EALREADY;
 231
 232         device->reconnect = FALSE;
 233
 234         clear_scan_trigger(device);
 235
 236         g_hash_table_remove_all(device->networks);
 237
 238         err = device->driver->disable(device);
 239         if (err < 0) {
 240                 if (err == -EINPROGRESS)
 241                         device->powered_pending = FALSE;
 242                 return err;
 243         }
 244
 245         device->powered_pending = FALSE;
 246         device->powered = FALSE;
 247
 248         __connman_technology_disable_device(device);
 249
 250         return 0;
 251 }
 252
 253 static int set_powered(struct connman_device *device, connman_bool_t powered)
 254 {
 255         DBG("device %p powered %d", device, powered);
 256
 257         if (powered == TRUE)
 258                 return __connman_device_enable(device);
 259         else
 260                 return __connman_device_disable(device);
 261 }
 262
 263 static int setup_device(struct connman_device *device)
 264 {
 265         DBG("device %p", device);
 266
 267         __connman_technology_add_device(device);
 268
 269         if (device->offlinemode == FALSE &&
 270                                 device->powered_persistent == TRUE)
 271                 __connman_device_enable(device);
 272
 273         return 0;
 274 }
 275
 276 static void probe_driver(struct connman_element *element, gpointer user_data)
 277 {
 278         struct connman_device_driver *driver = user_data;
 279
 280         DBG("element %p name %s", element, element->name);
 281
 282         if (element->device == NULL)
 283                 return;
 284
 285         if (element->device->driver != NULL)
 286                 return;
 287
 288         if (driver->type != element->device->type)
 289                 return;
 290
 291         if (driver->probe(element->device) < 0)
 292                 return;
 293
 294         element->device->driver = driver;
 295
 296         __connman_element_set_driver(element);
 297
 298         setup_device(element->device);
 299 }
 300
 301 static void remove_device(struct connman_device *device)
 302 {
 303         int err;
 304
 305         DBG("device %p", device);
 306
 307         err = __connman_device_disable(device);
 308         if (err < 0 && err == -EINPROGRESS)
 309                 __connman_technology_disable_device(device);
 310
 311         __connman_technology_remove_device(device);
 312
 313         if (device->driver->remove)
 314                 device->driver->remove(device);
 315
 316         device->driver = NULL;
 317 }
 318
 319 static void remove_driver(struct connman_element *element, gpointer user_data)
 320 {
 321         struct connman_device_driver *driver = user_data;
 322
 323         DBG("element %p name %s", element, element->name);
 324
 325         if (element->device == NULL)
 326                 return;
 327
 328         if (element->device->driver == driver)
 329                 remove_device(element->device);
 330 }
 331
 332 connman_bool_t __connman_device_has_driver(struct connman_device *device)
 333 {
 334         if (device == NULL || device->driver == NULL)
 335                 return FALSE;
 336
 337         return TRUE;
 338 }
 339
 340 static GSList *driver_list = NULL;
 341
 342 static gint compare_priority(gconstpointer a, gconstpointer b)
 343 {
 344         const struct connman_device_driver *driver1 = a;
 345         const struct connman_device_driver *driver2 = b;
 346
 347         return driver2->priority - driver1->priority;
 348 }
 349
 350 /**
 351  * connman_device_driver_register:
 352  * @driver: device driver definition
 353  *
 354  * Register a new device driver
 355  *
 356  * Returns: %0 on success
 357  */
 358 int connman_device_driver_register(struct connman_device_driver *driver)
 359 {
 360         DBG("driver %p name %s", driver, driver->name);
 361
 362         driver_list = g_slist_insert_sorted(driver_list, driver,
 363                                                         compare_priority);
 364
 365         __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_DEVICE,
 366                                                 probe_driver, driver);
 367
 368         return 0;
 369 }
 370
 371 /**
 372  * connman_device_driver_unregister:
 373  * @driver: device driver definition
 374  *
 375  * Remove a previously registered device driver
 376  */
 377 void connman_device_driver_unregister(struct connman_device_driver *driver)
 378 {
 379         DBG("driver %p name %s", driver, driver->name);
 380
 381         driver_list = g_slist_remove(driver_list, driver);
 382
 383         __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_DEVICE,
 384                                                 remove_driver, driver);
 385 }
 386
 387 static void unregister_network(gpointer data)
 388 {
 389         struct connman_network *network = data;
 390
 391         DBG("network %p", network);
 392
 393         connman_element_unregister((struct connman_element *) network);
 394
 395         __connman_network_set_device(network, NULL);
 396
 397         connman_network_unref(network);
 398 }
 399
 400 static void device_destruct(struct connman_element *element)
 401 {
 402         struct connman_device *device = element->device;
 403
 404         DBG("element %p name %s", element, element->name);
 405
 406         clear_scan_trigger(device);
 407
 408         g_free(device->ident);
 409         g_free(device->node);
 410         g_free(device->name);
 411         g_free(device->address);
 412         g_free(device->control);
 413         g_free(device->interface);
 414
 415         g_free(device->last_network);
 416
 417         g_hash_table_destroy(device->networks);
 418         device->networks = NULL;
 419 }
 420
 421 /**
 422  * connman_device_create:
 423  * @node: device node name (for example an address)
 424  * @type: device type
 425  *
 426  * Allocate a new device of given #type and assign the #node name to it.
 427  *
 428  * Returns: a newly-allocated #connman_device structure
 429  */
 430 struct connman_device *connman_device_create(const char *node,
 431                                                 enum connman_device_type type)
 432 {
 433         struct connman_device *device;
 434         const char *str;
 435         enum connman_service_type service_type;
 436
 437         DBG("node %s type %d", node, type);
 438
 439         device = g_try_new0(struct connman_device, 1);
 440         if (device == NULL)
 441                 return NULL;
 442
 443         DBG("device %p", device);
 444
 445         __connman_element_initialize(&device->element);
 446
 447         device->element.name = g_strdup(node);
 448         device->element.type = CONNMAN_ELEMENT_TYPE_DEVICE;
 449
 450         device->element.device = device;
 451         device->element.destruct = device_destruct;
 452
 453         str = type2string(type);
 454         if (str != NULL)
 455                 connman_element_set_string(&device->element,
 456                                         CONNMAN_PROPERTY_ID_TYPE, str);
 457
 458         device->element.ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
 459
 460         device->type = type;
 461         device->name = g_strdup(type2description(device->type));
 462
 463         device->powered_persistent = TRUE;
 464
 465         device->phyindex = -1;
 466
 467         service_type = __connman_device_get_service_type(device);
 468         device->blocked = __connman_technology_get_blocked(service_type);
 469
 470         switch (type) {
 471         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 472         case CONNMAN_DEVICE_TYPE_VENDOR:
 473                 device->scan_interval = 0;
 474                 break;
 475         case CONNMAN_DEVICE_TYPE_ETHERNET:
 476         case CONNMAN_DEVICE_TYPE_WIFI:
 477                 device->scan_interval = 300;
 478                 break;
 479         case CONNMAN_DEVICE_TYPE_WIMAX:
 480                 device->scan_interval = 0;
 481                 break;
 482         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 483                 device->scan_interval = 0;
 484                 break;
 485         case CONNMAN_DEVICE_TYPE_GPS:
 486                 device->scan_interval = 0;
 487                 break;
 488         case CONNMAN_DEVICE_TYPE_CELLULAR:
 489                 device->scan_interval = 0;
 490                 break;
 491         }
 492
 493         device->networks = g_hash_table_new_full(g_str_hash, g_str_equal,
 494                                                 g_free, unregister_network);
 495
 496         return device;
 497 }
 498
 499 /**
 500  * connman_device_ref:
 501  * @device: device structure
 502  *
 503  * Increase reference counter of device
 504  */
 505 struct connman_device *connman_device_ref(struct connman_device *device)
 506 {
 507         if (connman_element_ref(&device->element) == NULL)
 508                 return NULL;
 509
 510         return device;
 511 }
 512
 513 /**
 514  * connman_device_unref:
 515  * @device: device structure
 516  *
 517  * Decrease reference counter of device
 518  */
 519 void connman_device_unref(struct connman_device *device)
 520 {
 521         connman_element_unref(&device->element);
 522 }
 523
 524 const char *__connman_device_get_type(struct connman_device *device)
 525 {
 526         return type2string(device->type);
 527 }
 528
 529 /**
 530  * connman_device_get_type:
 531  * @device: device structure
 532  *
 533  * Get type of device
 534  */
 535 enum connman_device_type connman_device_get_type(struct connman_device *device)
 536 {
 537         return device->type;
 538 }
 539
 540 /**
 541  * connman_device_get_name:
 542  * @device: device structure
 543  *
 544  * Get unique name of device
 545  */
 546 const char *connman_device_get_name(struct connman_device *device)
 547 {
 548         return device->element.name;
 549 }
 550
 551 /**
 552  * connman_device_set_index:
 553  * @device: device structure
 554  * @index: index number
 555  *
 556  * Set index number of device
 557  */
 558 void connman_device_set_index(struct connman_device *device, int index)
 559 {
 560         device->element.index = index;
 561 }
 562
 563 /**
 564  * connman_device_get_index:
 565  * @device: device structure
 566  *
 567  * Get index number of device
 568  */
 569 int connman_device_get_index(struct connman_device *device)
 570 {
 571         return device->element.index;
 572 }
 573
 574 int __connman_device_get_phyindex(struct connman_device *device)
 575 {
 576         return device->phyindex;
 577 }
 578
 579 void __connman_device_set_phyindex(struct connman_device *device,
 580                                                         int phyindex)
 581 {
 582         device->phyindex = phyindex;
 583 }
 584
 585 /**
 586  * connman_device_set_interface:
 587  * @device: device structure
 588  * @interface: interface name
 589  * @control: control interface
 590  *
 591  * Set interface name of device
 592  */
 593 void connman_device_set_interface(struct connman_device *device,
 594                                 const char *interface, const char *control)
 595 {
 596         g_free(device->element.devname);
 597         device->element.devname = g_strdup(interface);
 598
 599         g_free(device->interface);
 600         device->interface = g_strdup(interface);
 601
 602         g_free(device->control);
 603         device->control = g_strdup(control);
 604
 605         if (device->name == NULL) {
 606                 const char *str = type2description(device->type);
 607                 if (str != NULL && device->interface != NULL)
 608                         device->name = g_strdup_printf("%s (%s)", str,
 609                                                         device->interface);
 610         }
 611 }
 612
 613 const char *connman_device_get_control(struct connman_device *device)
 614 {
 615         return device->control;
 616 }
 617
 618 /**
 619  * connman_device_set_ident:
 620  * @device: device structure
 621  * @ident: unique identifier
 622  *
 623  * Set unique identifier of device
 624  */
 625 void connman_device_set_ident(struct connman_device *device,
 626                                                         const char *ident)
 627 {
 628         g_free(device->ident);
 629         device->ident = g_strdup(ident);
 630 }
 631
 632 const char *connman_device_get_ident(struct connman_device *device)
 633 {
 634         return device->ident;
 635 }
 636
 637 /**
 638  * connman_device_set_powered:
 639  * @device: device structure
 640  * @powered: powered state
 641  *
 642  * Change power state of device
 643  */
 644 int connman_device_set_powered(struct connman_device *device,
 645                                                 connman_bool_t powered)
 646 {
 647         DBG("driver %p powered %d", device, powered);
 648
 649         if (device->powered == powered) {
 650                 device->powered_pending = powered;
 651                 return -EALREADY;
 652         }
 653
 654         if (powered == TRUE)
 655                 __connman_device_enable(device);
 656         else
 657                 __connman_device_disable(device);
 658
 659         device->powered = powered;
 660         device->powered_pending = powered;
 661
 662         if (device->powered == TRUE)
 663                 __connman_technology_enable_device(device);
 664         else
 665                 __connman_technology_disable_device(device);
 666
 667         if (device->offlinemode == TRUE && powered == TRUE)
 668                 return connman_device_set_powered(device, FALSE);
 669
 670         if (powered == FALSE)
 671                 return 0;
 672
 673         reset_scan_trigger(device);
 674
 675         if (device->driver->scan)
 676                 device->driver->scan(device);
 677
 678         return 0;
 679 }
 680
 681 int __connman_device_set_blocked(struct connman_device *device,
 682                                                 connman_bool_t blocked)
 683 {
 684         connman_bool_t powered;
 685
 686         DBG("device %p blocked %d", device, blocked);
 687
 688         device->blocked = blocked;
 689
 690         if (device->offlinemode == TRUE)
 691                 return 0;
 692
 693         connman_info("%s {rfkill} blocked %d", device->interface, blocked);
 694
 695         if (blocked == FALSE)
 696                 powered = device->powered_persistent;
 697         else
 698                 powered = FALSE;
 699
 700         return set_powered(device, powered);
 701 }
 702
 703 connman_bool_t __connman_device_get_blocked(struct connman_device *device)
 704 {
 705         return device->blocked;
 706 }
 707
 708 int __connman_device_scan(struct connman_device *device)
 709 {
 710         if (!device->driver || !device->driver->scan)
 711                 return -EOPNOTSUPP;
 712
 713         if (device->powered == FALSE)
 714                 return -ENOLINK;
 715
 716         reset_scan_trigger(device);
 717
 718         return device->driver->scan(device);
 719 }
 720
 721 int __connman_device_enable_persistent(struct connman_device *device)
 722 {
 723         int err;
 724
 725         DBG("device %p", device);
 726
 727         device->powered_persistent = TRUE;
 728
 729         __connman_storage_save_device(device);
 730
 731         err = __connman_device_enable(device);
 732         if (err == 0 || err == -EINPROGRESS) {
 733                 device->offlinemode = FALSE;
 734                 if (__connman_profile_get_offlinemode() == TRUE) {
 735                         __connman_profile_set_offlinemode(FALSE, FALSE);
 736
 737                         __connman_profile_save_default();
 738                 }
 739         }
 740
 741         return err;
 742 }
 743
 744 int __connman_device_disable_persistent(struct connman_device *device)
 745 {
 746         DBG("device %p", device);
 747
 748         device->powered_persistent = FALSE;
 749
 750         __connman_storage_save_device(device);
 751
 752         return __connman_device_disable(device);
 753 }
 754
 755 int __connman_device_disconnect(struct connman_device *device)
 756 {
 757         GHashTableIter iter;
 758         gpointer key, value;
 759
 760         DBG("device %p", device);
 761
 762         connman_device_set_disconnected(device, TRUE);
 763
 764         g_hash_table_iter_init(&iter, device->networks);
 765
 766         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 767                 struct connman_network *network = value;
 768
 769                 if (__connman_network_get_connecting(network) == TRUE) {
 770                         /*
 771                          * Skip network in the process of connecting.
 772                          * This is a workaround for WiFi networks serviced
 773                          * by the supplicant plugin that hold a reference
 774                          * to the network.  If we disconnect the network
 775                          * here then the referenced object will not be
 776                          * registered and usage (like launching DHCP client)
 777                          * will fail.  There is nothing to be gained by
 778                          * removing the network here anyway.
 779                          */
 780                         connman_warn("Skipping disconnect of %s",
 781                                 connman_network_get_identifier(network));
 782                         continue;
 783                 }
 784
 785                 __connman_network_disconnect(network);
 786         }
 787
 788         return 0;
 789 }
 790
 791 static void mark_network_unavailable(gpointer key, gpointer value,
 792                                                         gpointer user_data)
 793 {
 794         struct connman_network *network = value;
 795
 796         if (connman_network_get_connected(network) == TRUE)
 797                 return;
 798
 799         connman_network_set_available(network, FALSE);
 800 }
 801
 802 static gboolean remove_unavailable_network(gpointer key, gpointer value,
 803                                                         gpointer user_data)
 804 {
 805         struct connman_network *network = value;
 806
 807         if (connman_network_get_connected(network) == TRUE)
 808                 return FALSE;
 809
 810         if (connman_network_get_available(network) == TRUE)
 811                 return FALSE;
 812
 813         return TRUE;
 814 }
 815
 816 void __connman_device_cleanup_networks(struct connman_device *device)
 817 {
 818         g_hash_table_foreach_remove(device->networks,
 819                                         remove_unavailable_network, NULL);
 820 }
 821
 822 /**
 823  * connman_device_set_scanning:
 824  * @device: device structure
 825  * @scanning: scanning state
 826  *
 827  * Change scanning state of device
 828  */
 829 int connman_device_set_scanning(struct connman_device *device,
 830                                                 connman_bool_t scanning)
 831 {
 832         DBG("device %p scanning %d", device, scanning);
 833
 834         if (!device->driver || !device->driver->scan)
 835                 return -EINVAL;
 836
 837         if (device->scanning == scanning)
 838                 return -EALREADY;
 839
 840         device->scanning = scanning;
 841
 842         if (scanning == TRUE) {
 843                 reset_scan_trigger(device);
 844
 845                 g_hash_table_foreach(device->networks,
 846                                         mark_network_unavailable, NULL);
 847
 848                 return 0;
 849         }
 850
 851         __connman_device_cleanup_networks(device);
 852
 853         if (device->connections > 0)
 854                 return 0;
 855
 856         if (device->disconnected == TRUE)
 857                 return 0;
 858
 859         __connman_service_auto_connect();
 860
 861         return 0;
 862 }
 863
 864 /**
 865  * connman_device_set_disconnected:
 866  * @device: device structure
 867  * @disconnected: disconnected state
 868  *
 869  * Change disconnected state of device (only for device with networks)
 870  */
 871 int connman_device_set_disconnected(struct connman_device *device,
 872                                                 connman_bool_t disconnected)
 873 {
 874         DBG("device %p disconnected %d", device, disconnected);
 875
 876         if (device->disconnected == disconnected)
 877                 return -EALREADY;
 878
 879         device->disconnected = disconnected;
 880
 881         if (disconnected == TRUE)
 882                 force_scan_trigger(device);
 883
 884         return 0;
 885 }
 886
 887 /**
 888  * connman_device_get_disconnected:
 889  * @device: device structure
 890  *
 891  * Get device disconnected state
 892  */
 893 connman_bool_t connman_device_get_disconnected(struct connman_device *device)
 894 {
 895         return device->disconnected;
 896 }
 897
 898 /**
 899  * connman_device_set_string:
 900  * @device: device structure
 901  * @key: unique identifier
 902  * @value: string value
 903  *
 904  * Set string value for specific key
 905  */
 906 int connman_device_set_string(struct connman_device *device,
 907                                         const char *key, const char *value)
 908 {
 909         DBG("device %p key %s value %s", device, key, value);
 910
 911         if (g_str_equal(key, "Address") == TRUE) {
 912                 g_free(device->address);
 913                 device->address = g_strdup(value);
 914         } else if (g_str_equal(key, "Name") == TRUE) {
 915                 g_free(device->name);
 916                 device->name = g_strdup(value);
 917         } else if (g_str_equal(key, "Node") == TRUE) {
 918                 g_free(device->node);
 919                 device->node = g_strdup(value);
 920         }
 921
 922         return connman_element_set_string(&device->element, key, value);
 923 }
 924
 925 /**
 926  * connman_device_get_string:
 927  * @device: device structure
 928  * @key: unique identifier
 929  *
 930  * Get string value for specific key
 931  */
 932 const char *connman_device_get_string(struct connman_device *device,
 933                                                         const char *key)
 934 {
 935         DBG("device %p key %s", device, key);
 936
 937         if (g_str_equal(key, "Address") == TRUE)
 938                 return device->address;
 939         else if (g_str_equal(key, "Name") == TRUE)
 940                 return device->name;
 941         else if (g_str_equal(key, "Node") == TRUE)
 942                 return device->node;
 943         else if (g_str_equal(key, "Interface") == TRUE)
 944                 return device->interface;
 945
 946         return connman_element_get_string(&device->element, key);
 947 }
 948
 949 static void set_offlinemode(struct connman_element *element, gpointer user_data)
 950 {
 951         struct connman_device *device = element->device;
 952         connman_bool_t offlinemode = GPOINTER_TO_UINT(user_data);
 953         connman_bool_t powered;
 954
 955         DBG("element %p name %s", element, element->name);
 956
 957         if (device == NULL)
 958                 return;
 959
 960         device->offlinemode = offlinemode;
 961
 962         if (device->blocked == TRUE)
 963                 return;
 964
 965         powered = (offlinemode == TRUE) ? FALSE : TRUE;
 966
 967         if (device->powered == powered)
 968                 return;
 969
 970         if (device->powered_persistent == FALSE)
 971                 powered = FALSE;
 972
 973         set_powered(device, powered);
 974 }
 975
 976 int __connman_device_set_offlinemode(connman_bool_t offlinemode)
 977 {
 978         DBG("offlinmode %d", offlinemode);
 979
 980         __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_DEVICE,
 981                         set_offlinemode, GUINT_TO_POINTER(offlinemode));
 982
 983         __connman_notifier_offlinemode(offlinemode);
 984
 985         return 0;
 986 }
 987
 988 void __connman_device_increase_connections(struct connman_device *device)
 989 {
 990         if (device == NULL)
 991                 return;
 992
 993         device->connections++;
 994 }
 995
 996 void __connman_device_decrease_connections(struct connman_device *device)
 997 {
 998         if (device == NULL)
 999                 return;
1000
1001         device->connections--;
1002 }
1003
1004 /**
1005  * connman_device_add_network:
1006  * @device: device structure
1007  * @network: network structure
1008  *
1009  * Add new network to the device
1010  */
1011 int connman_device_add_network(struct connman_device *device,
1012                                         struct connman_network *network)
1013 {
1014         const char *identifier = connman_network_get_identifier(network);
1015         int err;
1016
1017         DBG("device %p network %p", device, network);
1018
1019         if (identifier == NULL)
1020                 return -EINVAL;
1021
1022         __connman_network_set_device(network, device);
1023
1024         err = connman_element_register((struct connman_element *) network,
1025                                                         &device->element);
1026         if (err < 0) {
1027                 __connman_network_set_device(network, NULL);
1028                 return err;
1029         }
1030
1031         g_hash_table_insert(device->networks, g_strdup(identifier),
1032                                                                 network);
1033
1034         return 0;
1035 }
1036
1037 /**
1038  * connman_device_get_network:
1039  * @device: device structure
1040  * @identifier: network identifier
1041  *
1042  * Get network for given identifier
1043  */
1044 struct connman_network *connman_device_get_network(struct connman_device *device,
1045                                                         const char *identifier)
1046 {
1047         DBG("device %p identifier %s", device, identifier);
1048
1049         return g_hash_table_lookup(device->networks, identifier);
1050 }
1051
1052 /**
1053  * connman_device_remove_network:
1054  * @device: device structure
1055  * @identifier: network identifier
1056  *
1057  * Remove network for given identifier
1058  */
1059 int connman_device_remove_network(struct connman_device *device,
1060                                                         const char *identifier)
1061 {
1062         DBG("device %p identifier %s", device, identifier);
1063
1064         g_hash_table_remove(device->networks, identifier);
1065
1066         return 0;
1067 }
1068
1069 void connman_device_remove_all_networks(struct connman_device *device)
1070 {
1071         g_hash_table_remove_all(device->networks);
1072 }
1073
1074 void __connman_device_set_network(struct connman_device *device,
1075                                         struct connman_network *network)
1076 {
1077         const char *name;
1078
1079         if (device == NULL)
1080                 return;
1081
1082         if (device->network == network)
1083                 return;
1084
1085         if (device->network != NULL)
1086                 connman_network_unref(device->network);
1087
1088         if (network != NULL) {
1089                 name = connman_network_get_string(network,
1090                                                 CONNMAN_PROPERTY_ID_NAME);
1091                 g_free(device->last_network);
1092                 device->last_network = g_strdup(name);
1093
1094                 device->network = connman_network_ref(network);
1095         } else {
1096                 g_free(device->last_network);
1097                 device->last_network = NULL;
1098
1099                 device->network = NULL;
1100         }
1101 }
1102
1103 void __connman_device_set_reconnect(struct connman_device *device,
1104                                                 connman_bool_t reconnect)
1105 {
1106         device->reconnect = reconnect;
1107 }
1108
1109 connman_bool_t  __connman_device_get_reconnect(
1110                                 struct connman_device *device)
1111 {
1112         return device->reconnect;
1113 }
1114
1115 /**
1116  * connman_device_register:
1117  * @device: device structure
1118  *
1119  * Register device with the system
1120  */
1121 int connman_device_register(struct connman_device *device)
1122 {
1123         __connman_storage_load_device(device);
1124
1125         device->offlinemode = __connman_profile_get_offlinemode();
1126
1127         return connman_element_register(&device->element, NULL);
1128 }
1129
1130 /**
1131  * connman_device_unregister:
1132  * @device: device structure
1133  *
1134  * Unregister device with the system
1135  */
1136 void connman_device_unregister(struct connman_device *device)
1137 {
1138         __connman_storage_save_device(device);
1139
1140         connman_element_unregister(&device->element);
1141 }
1142
1143 /**
1144  * connman_device_get_data:
1145  * @device: device structure
1146  *
1147  * Get private device data pointer
1148  */
1149 void *connman_device_get_data(struct connman_device *device)
1150 {
1151         return device->driver_data;
1152 }
1153
1154 /**
1155  * connman_device_set_data:
1156  * @device: device structure
1157  * @data: data pointer
1158  *
1159  * Set private device data pointer
1160  */
1161 void connman_device_set_data(struct connman_device *device, void *data)
1162 {
1163         device->driver_data = data;
1164 }
1165
1166 static gboolean match_driver(struct connman_device *device,
1167                                         struct connman_device_driver *driver)
1168 {
1169         if (device->type == driver->type ||
1170                         driver->type == CONNMAN_DEVICE_TYPE_UNKNOWN)
1171                 return TRUE;
1172
1173         return FALSE;
1174 }
1175
1176 static int device_probe(struct connman_element *element)
1177 {
1178         struct connman_device *device = element->device;
1179         GSList *list;
1180
1181         DBG("element %p name %s", element, element->name);
1182
1183         if (device == NULL)
1184                 return -ENODEV;
1185
1186         if (device->driver != NULL)
1187                 return -EALREADY;
1188
1189         for (list = driver_list; list; list = list->next) {
1190                 struct connman_device_driver *driver = list->data;
1191
1192                 if (match_driver(device, driver) == FALSE)
1193                         continue;
1194
1195                 DBG("driver %p name %s", driver, driver->name);
1196
1197                 if (driver->probe(device) == 0) {
1198                         device->driver = driver;
1199                         break;
1200                 }
1201         }
1202
1203         if (device->driver == NULL)
1204                 return -ENODEV;
1205
1206         return setup_device(device);
1207 }
1208
1209 static void device_remove(struct connman_element *element)
1210 {
1211         struct connman_device *device = element->device;
1212
1213         DBG("element %p name %s", element, element->name);
1214
1215         if (device == NULL)
1216                 return;
1217
1218         if (device->driver == NULL)
1219                 return;
1220
1221         remove_device(device);
1222 }
1223
1224 static struct connman_driver device_driver = {
1225         .name           = "device",
1226         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
1227         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
1228         .probe          = device_probe,
1229         .remove         = device_remove,
1230 };
1231
1232 static int device_load(struct connman_device *device)
1233 {
1234         const char *ident = __connman_profile_active_ident();
1235         GKeyFile *keyfile;
1236         GError *error = NULL;
1237         gchar *identifier;
1238         connman_bool_t powered;
1239         int val;
1240
1241         DBG("device %p", device);
1242
1243         keyfile = __connman_storage_open_profile(ident);
1244         if (keyfile == NULL)
1245                 return 0;
1246
1247         identifier = g_strdup_printf("device_%s", device->element.name);
1248         if (identifier == NULL)
1249                 goto done;
1250
1251         powered = g_key_file_get_boolean(keyfile, identifier,
1252                                                 "Powered", &error);
1253         if (error == NULL)
1254                 device->powered_persistent = powered;
1255         g_clear_error(&error);
1256
1257         val = g_key_file_get_integer(keyfile, identifier,
1258                                                 "ScanInterval", &error);
1259         if (error == NULL)
1260                 device->scan_interval = val;
1261         g_clear_error(&error);
1262
1263 done:
1264         g_free(identifier);
1265
1266         __connman_storage_close_profile(ident, keyfile, FALSE);
1267
1268         return 0;
1269 }
1270
1271 static int device_save(struct connman_device *device)
1272 {
1273         const char *ident = __connman_profile_active_ident();
1274         GKeyFile *keyfile;
1275         gchar *identifier;
1276
1277         DBG("device %p", device);
1278
1279         keyfile = __connman_storage_open_profile(ident);
1280         if (keyfile == NULL)
1281                 return 0;
1282
1283         identifier = g_strdup_printf("device_%s", device->element.name);
1284         if (identifier == NULL)
1285                 goto done;
1286
1287         g_key_file_set_boolean(keyfile, identifier,
1288                                         "Powered", device->powered_persistent);
1289
1290         g_key_file_set_integer(keyfile, identifier,
1291                                         "ScanInterval", device->scan_interval);
1292
1293 done:
1294         g_free(identifier);
1295
1296         __connman_storage_close_profile(ident, keyfile, TRUE);
1297
1298         return 0;
1299 }
1300
1301 static struct connman_storage device_storage = {
1302         .name           = "device",
1303         .priority       = CONNMAN_STORAGE_PRIORITY_LOW,
1304         .device_load    = device_load,
1305         .device_save    = device_save,
1306 };
1307
1308 int __connman_device_init(void)
1309 {
1310         DBG("");
1311
1312         if (connman_storage_register(&device_storage) < 0)
1313                 connman_error("Failed to register device storage");
1314
1315         return connman_driver_register(&device_driver);
1316 }
1317
1318 void __connman_device_cleanup(void)
1319 {
1320         DBG("");
1321
1322         connman_driver_unregister(&device_driver);
1323
1324         connman_storage_unregister(&device_storage);
1325 }