src/element.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 <stdarg.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36
  37 static GNode *element_root = NULL;
  38 static GSList *driver_list = NULL;
  39 static gchar *device_filter = NULL;
  40 static gchar *nodevice_filter = NULL;
  41
  42 static gboolean started = FALSE;
  43
  44 static const char *type2string(enum connman_element_type type)
  45 {
  46         switch (type) {
  47         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  48                 return "unknown";
  49         case CONNMAN_ELEMENT_TYPE_ROOT:
  50                 return "root";
  51         case CONNMAN_ELEMENT_TYPE_PROFILE:
  52                 return "profile";
  53         case CONNMAN_ELEMENT_TYPE_DEVICE:
  54                 return "device";
  55         case CONNMAN_ELEMENT_TYPE_NETWORK:
  56                 return "network";
  57         case CONNMAN_ELEMENT_TYPE_SERVICE:
  58                 return "service";
  59         case CONNMAN_ELEMENT_TYPE_IPV4:
  60                 return "ipv4";
  61         case CONNMAN_ELEMENT_TYPE_IPV6:
  62                 return "ipv6";
  63         case CONNMAN_ELEMENT_TYPE_DHCP:
  64                 return "dhcp";
  65         case CONNMAN_ELEMENT_TYPE_BOOTP:
  66                 return "bootp";
  67         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  68                 return "zeroconf";
  69         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  70                 return "connection";
  71         case CONNMAN_ELEMENT_TYPE_VENDOR:
  72                 return "vendor";
  73         }
  74
  75         return NULL;
  76 }
  77
  78 struct foreach_data {
  79         enum connman_element_type type;
  80         element_cb_t callback;
  81         gpointer user_data;
  82 };
  83
  84 static gboolean foreach_callback(GNode *node, gpointer user_data)
  85 {
  86         struct connman_element *element = node->data;
  87         struct foreach_data *data = user_data;
  88
  89         DBG("element %p name %s", element, element->name);
  90
  91         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
  92                 return FALSE;
  93
  94         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
  95                                         data->type != element->type)
  96                 return FALSE;
  97
  98         if (data->callback)
  99                 data->callback(element, data->user_data);
 100
 101         return FALSE;
 102 }
 103
 104 void __connman_element_foreach(struct connman_element *element,
 105                                 enum connman_element_type type,
 106                                 element_cb_t callback, gpointer user_data)
 107 {
 108         struct foreach_data data = { type, callback, user_data };
 109         GNode *node;
 110
 111         DBG("");
 112
 113         if (element != NULL) {
 114                 node = g_node_find(element_root, G_PRE_ORDER,
 115                                                 G_TRAVERSE_ALL, element);
 116                 if (node == NULL)
 117                         return;
 118         } else
 119                 node = element_root;
 120
 121         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 122                                                 foreach_callback, &data);
 123 }
 124
 125 struct append_filter {
 126         enum connman_element_type type;
 127         DBusMessageIter *iter;
 128 };
 129
 130 static gboolean append_path(GNode *node, gpointer user_data)
 131 {
 132         struct connman_element *element = node->data;
 133         struct append_filter *filter = user_data;
 134
 135         DBG("element %p name %s", element, element->name);
 136
 137         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 138                 return FALSE;
 139
 140         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 141                                         filter->type != element->type)
 142                 return FALSE;
 143
 144         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 145                         __connman_device_has_driver(element->device) == FALSE)
 146                 return FALSE;
 147
 148         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 149                         __connman_network_has_driver(element->network) == FALSE)
 150                 return FALSE;
 151
 152         dbus_message_iter_append_basic(filter->iter,
 153                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 154
 155         return FALSE;
 156 }
 157
 158 void __connman_element_list(struct connman_element *element,
 159                                         enum connman_element_type type,
 160                                                         DBusMessageIter *iter)
 161 {
 162         struct append_filter filter = { type, iter };
 163         GNode *node;
 164
 165         DBG("");
 166
 167         if (element != NULL) {
 168                 node = g_node_find(element_root, G_PRE_ORDER,
 169                                                 G_TRAVERSE_ALL, element);
 170                 if (node == NULL)
 171                         return;
 172         } else
 173                 node = element_root;
 174
 175         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 176                                                 append_path, &filter);
 177 }
 178
 179 struct count_data {
 180         enum connman_element_type type;
 181         int count;
 182 };
 183
 184 static gboolean count_element(GNode *node, gpointer user_data)
 185 {
 186         struct connman_element *element = node->data;
 187         struct count_data *data = user_data;
 188
 189         DBG("element %p name %s", element, element->name);
 190
 191         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 192                 return FALSE;
 193
 194         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 195                                         data->type != element->type)
 196                 return FALSE;
 197
 198         data->count++;
 199
 200         return FALSE;
 201 }
 202
 203 int __connman_element_count(struct connman_element *element,
 204                                         enum connman_element_type type)
 205 {
 206         struct count_data data = { type, 0 };
 207         GNode *node;
 208
 209         DBG("");
 210
 211         if (element != NULL) {
 212                 node = g_node_find(element_root, G_PRE_ORDER,
 213                                                 G_TRAVERSE_ALL, element);
 214                 if (node == NULL)
 215                         return 0;
 216         } else
 217                 node = element_root;
 218
 219         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 220                                                 count_element, &data);
 221
 222         return data.count;
 223 }
 224
 225 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 226 {
 227         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 228                                                 element->network != NULL)
 229                 return element->network;
 230
 231         if (element->parent == NULL)
 232                 return NULL;
 233
 234         return __connman_element_get_network(element->parent);
 235 }
 236
 237 struct connman_service *__connman_element_get_service(struct connman_element *element)
 238 {
 239         struct connman_service *service = NULL;
 240         struct connman_network *network;
 241         struct connman_device *device;
 242         enum connman_device_type type;
 243
 244         device = __connman_element_get_device(element);
 245         if (device == NULL)
 246                 return NULL;
 247
 248         type = connman_device_get_type(device);
 249
 250         switch (type) {
 251         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 252         case CONNMAN_DEVICE_TYPE_VENDOR:
 253         case CONNMAN_DEVICE_TYPE_GPS:
 254                 break;
 255         case CONNMAN_DEVICE_TYPE_ETHERNET:
 256         case CONNMAN_DEVICE_TYPE_WIFI:
 257         case CONNMAN_DEVICE_TYPE_WIMAX:
 258         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 259         case CONNMAN_DEVICE_TYPE_CELLULAR:
 260         case CONNMAN_DEVICE_TYPE_MBM:
 261         case CONNMAN_DEVICE_TYPE_HSO:
 262                 network = __connman_element_get_network(element);
 263                 if (network == NULL)
 264                         return NULL;
 265                 service = __connman_service_lookup_from_network(network);
 266                 break;
 267         }
 268
 269         return service;
 270 }
 271
 272 struct connman_device *__connman_element_get_device(struct connman_element *element)
 273 {
 274         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 275                                                 element->device != NULL)
 276                 return element->device;
 277
 278         if (element->parent == NULL)
 279                 return NULL;
 280
 281         return __connman_element_get_device(element->parent);
 282 }
 283
 284 const char *__connman_element_get_device_path(struct connman_element *element)
 285 {
 286         struct connman_device *device;
 287
 288         device = __connman_element_get_device(element);
 289         if (device == NULL)
 290                 return NULL;
 291
 292         return connman_device_get_path(device);
 293 }
 294
 295 const char *__connman_element_get_network_path(struct connman_element *element)
 296 {
 297         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 298                                                 element->network != NULL)
 299                 return element->path;
 300
 301         if (element->parent == NULL)
 302                 return NULL;
 303
 304         return __connman_element_get_network_path(element->parent);
 305 }
 306
 307 struct find_data {
 308         enum connman_service_type type;
 309         struct connman_device *device;
 310 };
 311
 312 static gboolean find_device(GNode *node, gpointer user_data)
 313 {
 314         struct connman_element *element = node->data;
 315         struct find_data *data = user_data;
 316
 317         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 318                 return FALSE;
 319
 320         if (element->device == NULL)
 321                 return FALSE;
 322
 323         if (data->type != connman_device_get_type(element->device))
 324                 return FALSE;
 325
 326         data->device = element->device;
 327
 328         return TRUE;
 329 }
 330
 331 struct connman_device *__connman_element_find_device(enum connman_service_type type)
 332 {
 333         struct find_data data = { .type = type, .device = NULL };
 334
 335         g_node_traverse(element_root, G_PRE_ORDER,
 336                                 G_TRAVERSE_ALL, -1, find_device, &data);
 337
 338         return data.device;
 339 }
 340
 341 static gboolean request_scan(GNode *node, gpointer user_data)
 342 {
 343         struct connman_element *element = node->data;
 344         struct find_data *data = user_data;
 345         enum connman_service_type type;
 346
 347         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 348                 return FALSE;
 349
 350         if (element->device == NULL)
 351                 return FALSE;
 352
 353         type = __connman_device_get_service_type(element->device);
 354
 355         switch (type) {
 356         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 357         case CONNMAN_SERVICE_TYPE_SYSTEM:
 358         case CONNMAN_SERVICE_TYPE_ETHERNET:
 359         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 360         case CONNMAN_SERVICE_TYPE_CELLULAR:
 361         case CONNMAN_SERVICE_TYPE_VPN:
 362                 return FALSE;
 363         case CONNMAN_SERVICE_TYPE_WIFI:
 364         case CONNMAN_SERVICE_TYPE_WIMAX:
 365                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 366                                                         data->type != type)
 367                         return FALSE;
 368                 break;
 369         }
 370
 371         __connman_device_scan(element->device);
 372
 373         return FALSE;
 374 }
 375
 376 int __connman_element_request_scan(enum connman_service_type type)
 377 {
 378         struct find_data data = { .type = type, .device = NULL };
 379
 380         g_node_traverse(element_root, G_PRE_ORDER,
 381                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 382
 383         return 0;
 384 }
 385
 386 static gboolean enable_technology(GNode *node, gpointer user_data)
 387 {
 388         struct connman_element *element = node->data;
 389         struct find_data *data = user_data;
 390         enum connman_service_type type;
 391
 392         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 393                 return FALSE;
 394
 395         if (element->device == NULL)
 396                 return FALSE;
 397
 398         type = __connman_device_get_service_type(element->device);
 399
 400         switch (type) {
 401         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 402         case CONNMAN_SERVICE_TYPE_SYSTEM:
 403         case CONNMAN_SERVICE_TYPE_VPN:
 404                 return FALSE;
 405         case CONNMAN_SERVICE_TYPE_ETHERNET:
 406         case CONNMAN_SERVICE_TYPE_WIFI:
 407         case CONNMAN_SERVICE_TYPE_WIMAX:
 408         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 409         case CONNMAN_SERVICE_TYPE_CELLULAR:
 410                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 411                                                         data->type != type)
 412                         return FALSE;
 413                 break;
 414         }
 415
 416         __connman_device_enable_persistent(element->device);
 417
 418         return FALSE;
 419 }
 420
 421 int __connman_element_enable_technology(enum connman_service_type type)
 422 {
 423         struct find_data data = { .type = type, .device = NULL };
 424
 425         g_node_traverse(element_root, G_PRE_ORDER,
 426                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 427
 428         return 0;
 429 }
 430
 431 static gboolean disable_technology(GNode *node, gpointer user_data)
 432 {
 433         struct connman_element *element = node->data;
 434         struct find_data *data = user_data;
 435         enum connman_service_type type;
 436
 437         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 438                 return FALSE;
 439
 440         if (element->device == NULL)
 441                 return FALSE;
 442
 443         type = __connman_device_get_service_type(element->device);
 444
 445         switch (type) {
 446         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 447         case CONNMAN_SERVICE_TYPE_SYSTEM:
 448         case CONNMAN_SERVICE_TYPE_VPN:
 449                 return FALSE;
 450         case CONNMAN_SERVICE_TYPE_ETHERNET:
 451         case CONNMAN_SERVICE_TYPE_WIFI:
 452         case CONNMAN_SERVICE_TYPE_WIMAX:
 453         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 454         case CONNMAN_SERVICE_TYPE_CELLULAR:
 455                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 456                                                         data->type != type)
 457                         return FALSE;
 458                 break;
 459         }
 460
 461         __connman_device_disable_persistent(element->device);
 462
 463         return FALSE;
 464 }
 465
 466 int __connman_element_disable_technology(enum connman_service_type type)
 467 {
 468         struct find_data data = { .type = type, .device = NULL };
 469
 470         g_node_traverse(element_root, G_PRE_ORDER,
 471                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 472
 473         return 0;
 474 }
 475
 476 static gint compare_priority(gconstpointer a, gconstpointer b)
 477 {
 478         const struct connman_driver *driver1 = a;
 479         const struct connman_driver *driver2 = b;
 480
 481         return driver2->priority - driver1->priority;
 482 }
 483
 484 static gboolean match_driver(struct connman_element *element,
 485                                         struct connman_driver *driver)
 486 {
 487         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 488                 return FALSE;
 489
 490         if (element->type == driver->type ||
 491                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 492                 return TRUE;
 493
 494         return FALSE;
 495 }
 496
 497 static gboolean probe_driver(GNode *node, gpointer data)
 498 {
 499         struct connman_element *element = node->data;
 500         struct connman_driver *driver = data;
 501
 502         DBG("element %p name %s", element, element->name);
 503
 504         if (!element->driver && match_driver(element, driver) == TRUE) {
 505                 if (driver->probe(element) < 0)
 506                         return FALSE;
 507
 508                 __connman_element_lock(element);
 509                 element->driver = driver;
 510                 __connman_element_unlock(element);
 511         }
 512
 513         return FALSE;
 514 }
 515
 516 void __connman_driver_rescan(struct connman_driver *driver)
 517 {
 518         DBG("driver %p name %s", driver, driver->name);
 519
 520         if (!driver->probe)
 521                 return;
 522
 523         if (element_root != NULL)
 524                 g_node_traverse(element_root, G_PRE_ORDER,
 525                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 526 }
 527
 528 /**
 529  * connman_driver_register:
 530  * @driver: driver definition
 531  *
 532  * Register a new driver
 533  *
 534  * Returns: %0 on success
 535  */
 536 int connman_driver_register(struct connman_driver *driver)
 537 {
 538         DBG("driver %p name %s", driver, driver->name);
 539
 540         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 541                 return -EINVAL;
 542
 543         if (!driver->probe)
 544                 return -EINVAL;
 545
 546         driver_list = g_slist_insert_sorted(driver_list, driver,
 547                                                         compare_priority);
 548
 549         if (started == FALSE)
 550                 return 0;
 551
 552         if (element_root != NULL)
 553                 g_node_traverse(element_root, G_PRE_ORDER,
 554                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 555
 556         return 0;
 557 }
 558
 559 static gboolean remove_driver(GNode *node, gpointer data)
 560 {
 561         struct connman_element *element = node->data;
 562         struct connman_driver *driver = data;
 563
 564         DBG("element %p name %s", element, element->name);
 565
 566         if (element->driver == driver) {
 567                 if (driver->remove)
 568                         driver->remove(element);
 569
 570                 __connman_element_lock(element);
 571                 element->driver = NULL;
 572                 __connman_element_unlock(element);
 573         }
 574
 575         return FALSE;
 576 }
 577
 578 /**
 579  * connman_driver_unregister:
 580  * @driver: driver definition
 581  *
 582  * Remove a previously registered driver
 583  */
 584 void connman_driver_unregister(struct connman_driver *driver)
 585 {
 586         DBG("driver %p name %s", driver, driver->name);
 587
 588         driver_list = g_slist_remove(driver_list, driver);
 589
 590         if (element_root != NULL)
 591                 g_node_traverse(element_root, G_POST_ORDER,
 592                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 593 }
 594
 595 static void unregister_property(gpointer data)
 596 {
 597         struct connman_property *property = data;
 598
 599         DBG("property %p", property);
 600
 601         g_free(property->value);
 602         g_free(property);
 603 }
 604
 605 void __connman_element_initialize(struct connman_element *element)
 606 {
 607         DBG("element %p", element);
 608
 609         element->refcount = 1;
 610
 611         element->name    = NULL;
 612         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 613         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 614         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 615         element->index   = -1;
 616         element->enabled = FALSE;
 617
 618         element->configuring = FALSE;
 619
 620         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 621                                                 g_free, unregister_property);
 622 }
 623
 624 /**
 625  * connman_element_create:
 626  * @name: element name
 627  *
 628  * Allocate a new element and assign the given #name to it. If the name
 629  * is #NULL, it will be later on created based on the element type.
 630  *
 631  * Returns: a newly-allocated #connman_element structure
 632  */
 633 struct connman_element *connman_element_create(const char *name)
 634 {
 635         struct connman_element *element;
 636
 637         element = g_try_new0(struct connman_element, 1);
 638         if (element == NULL)
 639                 return NULL;
 640
 641         DBG("element %p", element);
 642
 643         __connman_element_initialize(element);
 644
 645         return element;
 646 }
 647
 648 struct connman_element *connman_element_ref(struct connman_element *element)
 649 {
 650         DBG("element %p name %s refcount %d", element, element->name,
 651                                 g_atomic_int_get(&element->refcount) + 1);
 652
 653         g_atomic_int_inc(&element->refcount);
 654
 655         return element;
 656 }
 657
 658 static void free_properties(struct connman_element *element)
 659 {
 660         DBG("element %p name %s", element, element->name);
 661
 662         __connman_element_lock(element);
 663
 664         g_hash_table_destroy(element->properties);
 665         element->properties = NULL;
 666
 667         __connman_element_unlock(element);
 668 }
 669
 670 void connman_element_unref(struct connman_element *element)
 671 {
 672         DBG("element %p name %s refcount %d", element, element->name,
 673                                 g_atomic_int_get(&element->refcount) - 1);
 674
 675         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 676                 if (element->destruct)
 677                         element->destruct(element);
 678                 free_properties(element);
 679                 g_free(element->ipv4.address);
 680                 g_free(element->ipv4.netmask);
 681                 g_free(element->ipv4.gateway);
 682                 g_free(element->ipv4.network);
 683                 g_free(element->ipv4.broadcast);
 684                 g_free(element->ipv4.nameserver);
 685                 g_free(element->ipv4.timeserver);
 686                 g_free(element->ipv4.pac);
 687                 g_free(element->devname);
 688                 g_free(element->path);
 689                 g_free(element->name);
 690                 g_free(element);
 691         }
 692 }
 693
 694 static int set_static_property(struct connman_element *element,
 695                                 const char *name, int type, const void *value)
 696 {
 697         struct connman_property *property;
 698
 699         DBG("element %p name %s", element, element->name);
 700
 701         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 702                 return -EINVAL;
 703
 704         property = g_try_new0(struct connman_property, 1);
 705         if (property == NULL)
 706                 return -ENOMEM;
 707
 708         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 709         property->type = type;
 710
 711         DBG("name %s type %d value %p", name, type, value);
 712
 713         switch (type) {
 714         case DBUS_TYPE_STRING:
 715                 property->value = g_strdup(*((const char **) value));
 716                 break;
 717         case DBUS_TYPE_BOOLEAN:
 718         case DBUS_TYPE_BYTE:
 719                 property->value = g_try_malloc(1);
 720                 if (property->value != NULL)
 721                         memcpy(property->value, value, 1);
 722                 break;
 723         }
 724
 725         __connman_element_lock(element);
 726
 727         g_hash_table_replace(element->properties, g_strdup(name), property);
 728
 729         __connman_element_unlock(element);
 730
 731         return 0;
 732 }
 733
 734 static int set_static_array_property(struct connman_element *element,
 735                         const char *name, int type, const void *value, int len)
 736 {
 737         struct connman_property *property;
 738
 739         DBG("element %p name %s", element, element->name);
 740
 741         if (type != DBUS_TYPE_BYTE)
 742                 return -EINVAL;
 743
 744         property = g_try_new0(struct connman_property, 1);
 745         if (property == NULL)
 746                 return -ENOMEM;
 747
 748         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 749         property->type    = DBUS_TYPE_ARRAY;
 750         property->subtype = type;
 751
 752         DBG("name %s type %d value %p", name, type, value);
 753
 754         switch (type) {
 755         case DBUS_TYPE_BYTE:
 756                 property->value = g_try_malloc(len);
 757                 if (property->value != NULL) {
 758                         memcpy(property->value,
 759                                 *((const unsigned char **) value), len);
 760                         property->size = len;
 761                 }
 762                 break;
 763         }
 764
 765         __connman_element_lock(element);
 766
 767         g_hash_table_replace(element->properties, g_strdup(name), property);
 768
 769         __connman_element_unlock(element);
 770
 771         return 0;
 772 }
 773
 774 #if 0
 775 static int set_property(struct connman_element *element,
 776                                 enum connman_property_id id, const void *value)
 777 {
 778         switch (id) {
 779         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 780                 __connman_element_lock(element);
 781                 g_free(element->ipv4.address);
 782                 element->ipv4.address = g_strdup(*((const char **) value));
 783                 __connman_element_unlock(element);
 784                 break;
 785         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 786                 __connman_element_lock(element);
 787                 g_free(element->ipv4.netmask);
 788                 element->ipv4.netmask = g_strdup(*((const char **) value));
 789                 __connman_element_unlock(element);
 790                 break;
 791         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 792                 __connman_element_lock(element);
 793                 g_free(element->ipv4.gateway);
 794                 element->ipv4.gateway = g_strdup(*((const char **) value));
 795                 __connman_element_unlock(element);
 796                 break;
 797         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 798                 __connman_element_lock(element);
 799                 g_free(element->ipv4.broadcast);
 800                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 801                 __connman_element_unlock(element);
 802                 break;
 803         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 804                 __connman_element_lock(element);
 805                 g_free(element->ipv4.nameserver);
 806                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 807                 __connman_element_unlock(element);
 808                 break;
 809         default:
 810                 return -EINVAL;
 811         }
 812
 813         return 0;
 814 }
 815 #endif
 816
 817 int connman_element_get_value(struct connman_element *element,
 818                                 enum connman_property_id id, void *value)
 819 {
 820         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 821                 return -EINVAL;
 822
 823         switch (id) {
 824         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 825                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 826                         return connman_element_get_value(element->parent,
 827                                                                 id, value);
 828                 __connman_element_lock(element);
 829                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 830                 __connman_element_unlock(element);
 831                 break;
 832         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 833                 if (element->ipv4.address == NULL)
 834                         return connman_element_get_value(element->parent,
 835                                                                 id, value);
 836                 __connman_element_lock(element);
 837                 *((char **) value) = element->ipv4.address;
 838                 __connman_element_unlock(element);
 839                 break;
 840         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 841                 if (element->ipv4.netmask == NULL)
 842                         return connman_element_get_value(element->parent,
 843                                                                 id, value);
 844                 __connman_element_lock(element);
 845                 *((char **) value) = element->ipv4.netmask;
 846                 __connman_element_unlock(element);
 847                 break;
 848         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 849                 if (element->ipv4.gateway == NULL)
 850                         return connman_element_get_value(element->parent,
 851                                                                 id, value);
 852                 __connman_element_lock(element);
 853                 *((char **) value) = element->ipv4.gateway;
 854                 __connman_element_unlock(element);
 855                 break;
 856         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 857                 if (element->ipv4.broadcast == NULL)
 858                         return connman_element_get_value(element->parent,
 859                                                                 id, value);
 860                 __connman_element_lock(element);
 861                 *((char **) value) = element->ipv4.broadcast;
 862                 __connman_element_unlock(element);
 863                 break;
 864         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 865                 if (element->ipv4.nameserver == NULL)
 866                         return connman_element_get_value(element->parent,
 867                                                                 id, value);
 868                 __connman_element_lock(element);
 869                 *((char **) value) = element->ipv4.nameserver;
 870                 __connman_element_unlock(element);
 871                 break;
 872         case CONNMAN_PROPERTY_ID_IPV4_TIMESERVER:
 873                 if (element->ipv4.timeserver == NULL)
 874                         return connman_element_get_value(element->parent,
 875                                                                 id, value);
 876                 __connman_element_lock(element);
 877                 *((char **) value) = element->ipv4.timeserver;
 878                 __connman_element_unlock(element);
 879                 break;
 880         case CONNMAN_PROPERTY_ID_IPV4_PAC:
 881                 if (element->ipv4.pac == NULL)
 882                         return connman_element_get_value(element->parent,
 883                                                                 id, value);
 884                 __connman_element_lock(element);
 885                 *((char **) value) = element->ipv4.pac;
 886                 __connman_element_unlock(element);
 887                 break;
 888         default:
 889                 return -EINVAL;
 890         }
 891
 892         return 0;
 893 }
 894
 895 static gboolean get_static_property(struct connman_element *element,
 896                                                 const char *name, void *value)
 897 {
 898         struct connman_property *property;
 899         gboolean found = FALSE;
 900
 901         DBG("element %p name %s", element, element->name);
 902
 903         __connman_element_lock(element);
 904
 905         property = g_hash_table_lookup(element->properties, name);
 906         if (property != NULL) {
 907                 switch (property->type) {
 908                 case DBUS_TYPE_STRING:
 909                         *((char **) value) = property->value;
 910                         found = TRUE;
 911                         break;
 912                 case DBUS_TYPE_BOOLEAN:
 913                 case DBUS_TYPE_BYTE:
 914                         memcpy(value, property->value, 1);
 915                         found = TRUE;
 916                         break;
 917                 }
 918         }
 919
 920         __connman_element_unlock(element);
 921
 922         if (found == FALSE && element->parent != NULL)
 923                 return get_static_property(element->parent, name, value);
 924
 925         return found;
 926 }
 927
 928 static gboolean get_static_array_property(struct connman_element *element,
 929                         const char *name, void *value, unsigned int *len)
 930 {
 931         struct connman_property *property;
 932         gboolean found = FALSE;
 933
 934         DBG("element %p name %s", element, element->name);
 935
 936         __connman_element_lock(element);
 937
 938         property = g_hash_table_lookup(element->properties, name);
 939         if (property != NULL) {
 940                 *((void **) value) = property->value;
 941                 *len = property->size;
 942                 found = TRUE;
 943         }
 944
 945         __connman_element_unlock(element);
 946
 947         return found;
 948 }
 949
 950 #if 0
 951 static gboolean match_static_property(struct connman_element *element,
 952                                         const char *name, const void *value)
 953 {
 954         struct connman_property *property;
 955         gboolean result = FALSE;
 956
 957         DBG("element %p name %s", element, element->name);
 958
 959         __connman_element_lock(element);
 960
 961         property = g_hash_table_lookup(element->properties, name);
 962         if (property != NULL) {
 963                 if (property->type == DBUS_TYPE_STRING)
 964                         result = g_str_equal(property->value,
 965                                                 *((const char **) value));
 966         }
 967
 968         __connman_element_unlock(element);
 969
 970         return result;
 971 }
 972 #endif
 973
 974 /**
 975  * connman_element_set_string:
 976  * @element: element structure
 977  * @key: unique identifier
 978  * @value: string value
 979  *
 980  * Set string value for specific key
 981  */
 982 int connman_element_set_string(struct connman_element *element,
 983                                         const char *key, const char *value)
 984 {
 985         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 986 }
 987
 988 /**
 989  * connman_element_get_string:
 990  * @element: element structure
 991  * @key: unique identifier
 992  *
 993  * Get string value for specific key
 994  */
 995 const char *connman_element_get_string(struct connman_element *element,
 996                                                         const char *key)
 997 {
 998         const char *value;
 999
1000         if (get_static_property(element, key, &value) == FALSE)
1001                 return NULL;
1002
1003         return value;
1004 }
1005
1006 /**
1007  * connman_element_set_bool:
1008  * @element: element structure
1009  * @key: unique identifier
1010  * @value: boolean value
1011  *
1012  * Set boolean value for specific key
1013  */
1014 int connman_element_set_bool(struct connman_element *element,
1015                                         const char *key, connman_bool_t value)
1016 {
1017         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
1018 }
1019
1020 /**
1021  * connman_element_get_bool:
1022  * @element: element structure
1023  * @key: unique identifier
1024  *
1025  * Get boolean value for specific key
1026  */
1027 connman_bool_t connman_element_get_bool(struct connman_element *element,
1028                                                         const char *key)
1029 {
1030         connman_bool_t value;
1031
1032         if (get_static_property(element, key, &value) == FALSE)
1033                 return FALSE;
1034
1035         return value;
1036 }
1037
1038 /**
1039  * connman_element_set_uint8:
1040  * @element: element structure
1041  * @key: unique identifier
1042  * @value: integer value
1043  *
1044  * Set integer value for specific key
1045  */
1046 int connman_element_set_uint8(struct connman_element *element,
1047                                         const char *key, connman_uint8_t value)
1048 {
1049         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
1050 }
1051
1052 /**
1053  * connman_element_get_uint8:
1054  * @element: element structure
1055  * @key: unique identifier
1056  *
1057  * Get integer value for specific key
1058  */
1059 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
1060                                                         const char *key)
1061 {
1062         connman_uint8_t value;
1063
1064         if (get_static_property(element, key, &value) == FALSE)
1065                 return 0;
1066
1067         return value;
1068 }
1069
1070 /**
1071  * connman_element_set_blob:
1072  * @element: element structure
1073  * @key: unique identifier
1074  * @data: blob data
1075  * @size: blob size
1076  *
1077  * Set binary blob value for specific key
1078  */
1079 int connman_element_set_blob(struct connman_element *element,
1080                         const char *key, const void *data, unsigned int size)
1081 {
1082         return set_static_array_property(element, key,
1083                                                 DBUS_TYPE_BYTE, &data, size);
1084 }
1085
1086 /**
1087  * connman_element_get_blob:
1088  * @element: element structure
1089  * @key: unique identifier
1090  * @size: pointer to blob size
1091  *
1092  * Get binary blob value for specific key
1093  */
1094 const void *connman_element_get_blob(struct connman_element *element,
1095                                         const char *key, unsigned int *size)
1096 {
1097         void *value;
1098
1099         if (get_static_array_property(element, key, &value, size) == FALSE)
1100                 return NULL;
1101
1102         return value;
1103 }
1104
1105 int __connman_element_append_ipv4(struct connman_element *element,
1106                                                 DBusMessageIter *dict)
1107 {
1108         const char *method = NULL;
1109         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1110         const char *broadcast = NULL, *nameserver = NULL;
1111         const char *timeserver = NULL, *pac = NULL;
1112
1113         connman_element_get_value(element,
1114                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
1115
1116         connman_element_get_value(element,
1117                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
1118         connman_element_get_value(element,
1119                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
1120         connman_element_get_value(element,
1121                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
1122         connman_element_get_value(element,
1123                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
1124         connman_element_get_value(element,
1125                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
1126         connman_element_get_value(element,
1127                         CONNMAN_PROPERTY_ID_IPV4_TIMESERVER, &timeserver);
1128         connman_element_get_value(element,
1129                         CONNMAN_PROPERTY_ID_IPV4_PAC, &pac);
1130
1131         if (method != NULL)
1132                 connman_dbus_dict_append_basic(dict, "IPv4.Method",
1133                                                 DBUS_TYPE_STRING, &method);
1134
1135         if (address != NULL)
1136                 connman_dbus_dict_append_basic(dict, "IPv4.Address",
1137                                                 DBUS_TYPE_STRING, &address);
1138
1139         if (netmask != NULL)
1140                 connman_dbus_dict_append_basic(dict, "IPv4.Netmask",
1141                                                 DBUS_TYPE_STRING, &netmask);
1142
1143         if (gateway != NULL)
1144                 connman_dbus_dict_append_basic(dict, "IPv4.Gateway",
1145                                                 DBUS_TYPE_STRING, &gateway);
1146
1147         if (broadcast != NULL)
1148                 connman_dbus_dict_append_basic(dict, "IPv4.Broadcast",
1149                                                 DBUS_TYPE_STRING, &broadcast);
1150
1151         if (nameserver != NULL)
1152                 connman_dbus_dict_append_basic(dict, "IPv4.Nameserver",
1153                                                 DBUS_TYPE_STRING, &nameserver);
1154
1155         if (timeserver != NULL)
1156                 connman_dbus_dict_append_basic(dict, "IPv4.Timeserver",
1157                                                 DBUS_TYPE_STRING, &timeserver);
1158
1159         if (pac != NULL)
1160                 connman_dbus_dict_append_basic(dict, "IPv4.PAC",
1161                                                 DBUS_TYPE_STRING, &pac);
1162
1163         return 0;
1164 }
1165
1166 int __connman_element_set_ipv4(struct connman_element *element,
1167                                 const char *name, DBusMessageIter *value)
1168 {
1169         int type;
1170
1171         type = dbus_message_iter_get_arg_type(value);
1172
1173         if (g_str_equal(name, "IPv4.Method") == TRUE) {
1174                 enum connman_ipconfig_method method;
1175                 const char *str;
1176
1177                 if (type != DBUS_TYPE_STRING)
1178                         return -EINVAL;
1179
1180                 dbus_message_iter_get_basic(value, &str);
1181                 method = __connman_ipconfig_string2method(str);
1182                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
1183                         return -EINVAL;
1184
1185                 if (method == element->ipv4.method)
1186                         return -EALREADY;
1187
1188                 element->ipv4.method = method;
1189
1190                 connman_element_update(element);
1191         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
1192                 const char *address;
1193
1194                 if (type != DBUS_TYPE_STRING)
1195                         return -EINVAL;
1196
1197                 dbus_message_iter_get_basic(value, &address);
1198
1199                 g_free(element->ipv4.address);
1200                 element->ipv4.address = g_strdup(address);
1201
1202                 connman_element_update(element);
1203         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
1204                 const char *netmask;
1205
1206                 if (type != DBUS_TYPE_STRING)
1207                         return -EINVAL;
1208
1209                 dbus_message_iter_get_basic(value, &netmask);
1210
1211                 g_free(element->ipv4.netmask);
1212                 element->ipv4.netmask = g_strdup(netmask);
1213
1214                 connman_element_update(element);
1215         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1216                 const char *gateway;
1217
1218                 if (type != DBUS_TYPE_STRING)
1219                         return -EINVAL;
1220
1221                 dbus_message_iter_get_basic(value, &gateway);
1222
1223                 g_free(element->ipv4.gateway);
1224                 element->ipv4.gateway = g_strdup(gateway);
1225
1226                 connman_element_update(element);
1227         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1228                 const char *broadcast;
1229
1230                 if (type != DBUS_TYPE_STRING)
1231                         return -EINVAL;
1232
1233                 dbus_message_iter_get_basic(value, &broadcast);
1234
1235                 g_free(element->ipv4.broadcast);
1236                 element->ipv4.broadcast = g_strdup(broadcast);
1237
1238                 connman_element_update(element);
1239         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1240                 const char *nameserver;
1241
1242                 if (type != DBUS_TYPE_STRING)
1243                         return -EINVAL;
1244
1245                 dbus_message_iter_get_basic(value, &nameserver);
1246
1247                 g_free(element->ipv4.nameserver);
1248                 element->ipv4.nameserver = g_strdup(nameserver);
1249
1250                 connman_element_update(element);
1251         } else if (g_str_equal(name, "IPv4.Timeserver") == TRUE) {
1252                 const char *timeserver;
1253
1254                 if (type != DBUS_TYPE_STRING)
1255                         return -EINVAL;
1256
1257                 dbus_message_iter_get_basic(value, &timeserver);
1258
1259                 g_free(element->ipv4.timeserver);
1260                 element->ipv4.timeserver = g_strdup(timeserver);
1261
1262                 connman_element_update(element);
1263         } else if (g_str_equal(name, "IPv4.PAC") == TRUE) {
1264                 const char *pac;
1265
1266                 if (type != DBUS_TYPE_STRING)
1267                         return -EINVAL;
1268
1269                 dbus_message_iter_get_basic(value, &pac);
1270
1271                 g_free(element->ipv4.pac);
1272                 element->ipv4.pac = g_strdup(pac);
1273
1274                 connman_element_update(element);
1275         }
1276
1277         return 0;
1278 }
1279
1280 static void emit_state_change(DBusConnection *conn, const char *state)
1281 {
1282         DBusMessage *signal;
1283         DBusMessageIter iter;
1284
1285         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
1286                                 CONNMAN_MANAGER_INTERFACE, "State",
1287                                                 DBUS_TYPE_STRING, &state);
1288
1289         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1290                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1291         if (signal == NULL)
1292                 return;
1293
1294         dbus_message_iter_init_append(signal, &iter);
1295         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &state);
1296
1297         g_dbus_send_message(conn, signal);
1298 }
1299
1300 static void probe_element(struct connman_element *element)
1301 {
1302         GSList *list;
1303
1304         DBG("element %p name %s", element, element->name);
1305
1306         for (list = driver_list; list; list = list->next) {
1307                 struct connman_driver *driver = list->data;
1308
1309                 if (match_driver(element, driver) == FALSE)
1310                         continue;
1311
1312                 DBG("driver %p name %s", driver, driver->name);
1313
1314                 if (driver->probe(element) == 0) {
1315                         __connman_element_lock(element);
1316                         element->driver = driver;
1317                         __connman_element_unlock(element);
1318                         break;
1319                 }
1320         }
1321 }
1322
1323 static void register_element(gpointer data, gpointer user_data)
1324 {
1325         struct connman_element *element = data;
1326         const gchar *basepath;
1327         GNode *node;
1328
1329         __connman_element_lock(element);
1330
1331         if (element->parent) {
1332                 node = g_node_find(element_root, G_PRE_ORDER,
1333                                         G_TRAVERSE_ALL, element->parent);
1334                 basepath = element->parent->path;
1335         } else {
1336                 element->parent = element_root->data;
1337
1338                 node = element_root;
1339                 basepath = "/device";
1340         }
1341
1342         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1343
1344         __connman_element_unlock(element);
1345
1346         if (node == NULL) {
1347                 connman_error("Element registration for %s failed",
1348                                                         element->path);
1349                 return;
1350         }
1351
1352         DBG("element %p path %s", element, element->path);
1353
1354         g_node_append_data(node, element);
1355
1356         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1357                 element->parent->configuring = TRUE;
1358
1359 #if 0
1360                 if (__connman_element_count(NULL,
1361                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1362                         emit_state_change(connection, "connecting");
1363 #endif
1364         }
1365
1366         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1367                 struct connman_element *parent = element->parent;
1368
1369                 while (parent) {
1370                         parent->configuring = FALSE;
1371                         parent = parent->parent;
1372                 }
1373
1374                 if (__connman_element_count(NULL,
1375                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1376                         emit_state_change(connection, "online");
1377         }
1378
1379         if (started == FALSE)
1380                 return;
1381
1382         probe_element(element);
1383 }
1384
1385 gboolean __connman_element_device_isfiltered(const char *devname)
1386 {
1387         if (device_filter == NULL)
1388                 goto nodevice;
1389
1390         if (g_pattern_match_simple(device_filter, devname) == FALSE) {
1391                 DBG("ignoring device %s (match)", devname);
1392                 return TRUE;
1393         }
1394
1395 nodevice:
1396         if (nodevice_filter == NULL)
1397                 return FALSE;
1398
1399         if (g_pattern_match_simple(nodevice_filter, devname) == TRUE) {
1400                 DBG("ignoring device %s (no match)", devname);
1401                 return TRUE;
1402         }
1403
1404         return FALSE;
1405 }
1406
1407 /**
1408  * connman_element_register:
1409  * @element: the element to register
1410  * @parent: the parent to register the element with
1411  *
1412  * Register an element with the core. It will be register under the given
1413  * parent of if %NULL is provided under the root element.
1414  *
1415  * Returns: %0 on success
1416  */
1417 int connman_element_register(struct connman_element *element,
1418                                         struct connman_element *parent)
1419 {
1420         DBG("element %p name %s parent %p", element, element->name, parent);
1421
1422         if (element->devname == NULL)
1423                 element->devname = g_strdup(element->name);
1424
1425         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1426                 goto setup;
1427
1428         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1429                 return -EPERM;
1430
1431 setup:
1432         if (connman_element_ref(element) == NULL)
1433                 return -EINVAL;
1434
1435         __connman_element_lock(element);
1436
1437         if (element->name == NULL) {
1438                 element->name = g_strdup(type2string(element->type));
1439                 if (element->name == NULL) {
1440                         __connman_element_unlock(element);
1441                         return -EINVAL;
1442                 }
1443         }
1444
1445         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1446                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1447
1448         element->parent = parent;
1449
1450         __connman_element_unlock(element);
1451
1452         register_element(element, NULL);
1453
1454         return 0;
1455 }
1456
1457 static gboolean remove_element(GNode *node, gpointer user_data)
1458 {
1459         struct connman_element *element = node->data;
1460         struct connman_element *root = user_data;
1461
1462         DBG("element %p name %s", element, element->name);
1463
1464         if (element == root)
1465                 return FALSE;
1466
1467         if (node != NULL)
1468                 g_node_unlink(node);
1469
1470         if (element->driver) {
1471                 if (element->driver->remove)
1472                         element->driver->remove(element);
1473
1474                 __connman_element_lock(element);
1475                 element->driver = NULL;
1476                 __connman_element_unlock(element);
1477         }
1478
1479         if (node != NULL)
1480                 g_node_destroy(node);
1481
1482         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1483                 if (__connman_element_count(NULL,
1484                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1485                         emit_state_change(connection, "offline");
1486         }
1487
1488         connman_element_unref(element);
1489
1490         return FALSE;
1491 }
1492
1493 void connman_element_unregister(struct connman_element *element)
1494 {
1495         GNode *node;
1496
1497         DBG("element %p name %s", element, element->name);
1498
1499         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1500
1501         if (node != NULL)
1502                 g_node_traverse(node, G_POST_ORDER,
1503                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1504 }
1505
1506 void connman_element_unregister_children(struct connman_element *element)
1507 {
1508         GNode *node;
1509
1510         DBG("element %p name %s", element, element->name);
1511
1512         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1513
1514         if (node != NULL)
1515                 g_node_traverse(node, G_POST_ORDER,
1516                                 G_TRAVERSE_ALL, -1, remove_element, element);
1517 }
1518
1519 static gboolean update_element(GNode *node, gpointer user_data)
1520 {
1521         struct connman_element *element = node->data;
1522
1523         DBG("element %p name %s", element, element->name);
1524
1525         if (element->driver && element->driver->update)
1526                 element->driver->update(element);
1527
1528         return FALSE;
1529 }
1530
1531 void connman_element_update(struct connman_element *element)
1532 {
1533         GNode *node;
1534
1535         DBG("element %p name %s", element, element->name);
1536
1537         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1538
1539         if (node != NULL)
1540                 g_node_traverse(node, G_PRE_ORDER,
1541                                 G_TRAVERSE_ALL, -1, update_element, element);
1542 }
1543
1544 int connman_element_set_enabled(struct connman_element *element,
1545                                                         gboolean enabled)
1546 {
1547         if (element->enabled == enabled)
1548                 return 0;
1549
1550         element->enabled = enabled;
1551
1552         connman_element_update(element);
1553
1554         return 0;
1555 }
1556
1557 static enum connman_service_error convert_error(enum connman_element_error error)
1558 {
1559         switch (error) {
1560         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1561         case CONNMAN_ELEMENT_ERROR_FAILED:
1562                 break;
1563         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1564                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1565         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1566                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1567         }
1568
1569         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1570 }
1571
1572 /**
1573  * connman_element_set_error:
1574  * @element: element structure
1575  * @error: error identifier
1576  *
1577  * Set error state and specific error identifier
1578  */
1579 void connman_element_set_error(struct connman_element *element,
1580                                         enum connman_element_error error)
1581 {
1582         struct connman_service *service;
1583
1584         DBG("element %p error %d", element, error);
1585
1586         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1587                 return;
1588
1589         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1590         element->error = error;
1591
1592         if (element->driver && element->driver->change)
1593                 element->driver->change(element);
1594
1595         service = __connman_element_get_service(element);
1596         __connman_service_indicate_error(service, convert_error(error));
1597 }
1598
1599 int __connman_element_init(const char *device, const char *nodevice)
1600 {
1601         struct connman_element *element;
1602
1603         DBG("");
1604
1605         connection = connman_dbus_get_connection();
1606         if (connection == NULL)
1607                 return -EIO;
1608
1609         device_filter = g_strdup(device);
1610         nodevice_filter = g_strdup(nodevice);
1611
1612         element = connman_element_create("root");
1613
1614         element->path = g_strdup("/");
1615         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1616
1617         element_root = g_node_new(element);
1618
1619         __connman_technology_init();
1620         __connman_notifier_init();
1621         __connman_service_init();
1622         __connman_provider_init();
1623         __connman_network_init();
1624         __connman_device_init();
1625
1626         return 0;
1627 }
1628
1629 static gboolean probe_node(GNode *node, gpointer data)
1630 {
1631         struct connman_element *element = node->data;
1632
1633         DBG("element %p name %s", element, element->name);
1634
1635         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1636                 return FALSE;
1637
1638         if (element->driver)
1639                 return FALSE;
1640
1641         probe_element(element);
1642
1643         return FALSE;
1644 }
1645
1646 void __connman_element_start(void)
1647 {
1648         DBG("");
1649
1650         __connman_storage_init_profile();
1651
1652         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1653                                                         probe_node, NULL);
1654
1655         started = TRUE;
1656
1657         __connman_rtnl_start();
1658         __connman_udev_start();
1659
1660         __connman_connection_init();
1661         __connman_ipv4_init();
1662         __connman_dhcp_init();
1663
1664         if (__connman_rfkill_init() < 0)
1665                 __connman_udev_enable_rfkill_processing();
1666 }
1667
1668 void __connman_element_stop(void)
1669 {
1670         DBG("");
1671
1672         __connman_rfkill_cleanup();
1673
1674         __connman_dhcp_cleanup();
1675         __connman_ipv4_cleanup();
1676         __connman_provider_cleanup();
1677         __connman_connection_cleanup();
1678 }
1679
1680 static gboolean free_driver(GNode *node, gpointer data)
1681 {
1682         struct connman_element *element = node->data;
1683
1684         DBG("element %p name %s", element, element->name);
1685
1686         if (element->driver) {
1687                 if (element->driver->remove)
1688                         element->driver->remove(element);
1689
1690                 __connman_element_lock(element);
1691                 element->driver = NULL;
1692                 __connman_element_unlock(element);
1693         }
1694
1695         return FALSE;
1696 }
1697
1698 static gboolean free_node(GNode *node, gpointer data)
1699 {
1700         struct connman_element *element = node->data;
1701
1702         DBG("element %p name %s", element, element->name);
1703
1704         if (g_node_depth(node) > 1)
1705                 connman_element_unregister(element);
1706
1707         return FALSE;
1708 }
1709
1710 void __connman_element_cleanup(void)
1711 {
1712         DBG("");
1713
1714         __connman_device_cleanup();
1715         __connman_network_cleanup();
1716         __connman_service_cleanup();
1717         __connman_notifier_cleanup();
1718         __connman_technology_cleanup();
1719
1720         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1721                                                         free_driver, NULL);
1722
1723         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1724                                                         free_node, NULL);
1725
1726         g_node_destroy(element_root);
1727         element_root = NULL;
1728
1729         g_free(nodevice_filter);
1730         g_free(device_filter);
1731
1732         if (connection == NULL)
1733                 return;
1734
1735         dbus_connection_unref(connection);
1736 }