src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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
  41 static gboolean started = FALSE;
  42
  43 static const char *type2string(enum connman_element_type type)
  44 {
  45         switch (type) {
  46         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  47                 return "unknown";
  48         case CONNMAN_ELEMENT_TYPE_ROOT:
  49                 return "root";
  50         case CONNMAN_ELEMENT_TYPE_PROFILE:
  51                 return "profile";
  52         case CONNMAN_ELEMENT_TYPE_DEVICE:
  53                 return "device";
  54         case CONNMAN_ELEMENT_TYPE_NETWORK:
  55                 return "network";
  56         case CONNMAN_ELEMENT_TYPE_SERVICE:
  57                 return "service";
  58         case CONNMAN_ELEMENT_TYPE_PPP:
  59                 return "ppp";
  60         case CONNMAN_ELEMENT_TYPE_IPV4:
  61                 return "ipv4";
  62         case CONNMAN_ELEMENT_TYPE_IPV6:
  63                 return "ipv6";
  64         case CONNMAN_ELEMENT_TYPE_DHCP:
  65                 return "dhcp";
  66         case CONNMAN_ELEMENT_TYPE_BOOTP:
  67                 return "bootp";
  68         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  69                 return "zeroconf";
  70         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  71                 return "connection";
  72         case CONNMAN_ELEMENT_TYPE_VENDOR:
  73                 return "vendor";
  74         }
  75
  76         return NULL;
  77 }
  78
  79 static void emit_element_signal(DBusConnection *conn, const char *member,
  80                                         struct connman_element *element)
  81 {
  82         DBusMessage *signal;
  83
  84         if (__connman_debug_enabled() == FALSE)
  85                 return;
  86
  87         DBG("conn %p member %s", conn, member);
  88
  89         if (element == NULL)
  90                 return;
  91
  92         signal = dbus_message_new_signal(element->path,
  93                                         CONNMAN_DEBUG_INTERFACE, member);
  94         if (signal == NULL)
  95                 return;
  96
  97         g_dbus_send_message(conn, signal);
  98 }
  99
 100 struct foreach_data {
 101         enum connman_element_type type;
 102         element_cb_t callback;
 103         gpointer user_data;
 104 };
 105
 106 static gboolean foreach_callback(GNode *node, gpointer user_data)
 107 {
 108         struct connman_element *element = node->data;
 109         struct foreach_data *data = user_data;
 110
 111         DBG("element %p name %s", element, element->name);
 112
 113         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 114                 return FALSE;
 115
 116         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 117                                         data->type != element->type)
 118                 return FALSE;
 119
 120         if (data->callback)
 121                 data->callback(element, data->user_data);
 122
 123         return FALSE;
 124 }
 125
 126 void __connman_element_foreach(struct connman_element *element,
 127                                 enum connman_element_type type,
 128                                 element_cb_t callback, gpointer user_data)
 129 {
 130         struct foreach_data data = { type, callback, user_data };
 131         GNode *node;
 132
 133         DBG("");
 134
 135         if (element != NULL) {
 136                 node = g_node_find(element_root, G_PRE_ORDER,
 137                                                 G_TRAVERSE_ALL, element);
 138                 if (node == NULL)
 139                         return;
 140         } else
 141                 node = element_root;
 142
 143         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 144                                                 foreach_callback, &data);
 145 }
 146
 147 struct append_filter {
 148         enum connman_element_type type;
 149         DBusMessageIter *iter;
 150 };
 151
 152 static gboolean append_path(GNode *node, gpointer user_data)
 153 {
 154         struct connman_element *element = node->data;
 155         struct append_filter *filter = user_data;
 156
 157         DBG("element %p name %s", element, element->name);
 158
 159         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 160                 return FALSE;
 161
 162         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 163                                         filter->type != element->type)
 164                 return FALSE;
 165
 166         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 167                         __connman_device_has_driver(element->device) == FALSE)
 168                 return FALSE;
 169
 170         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 171                         __connman_network_has_driver(element->network) == FALSE)
 172                 return FALSE;
 173
 174         dbus_message_iter_append_basic(filter->iter,
 175                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 176
 177         return FALSE;
 178 }
 179
 180 void __connman_element_list(struct connman_element *element,
 181                                         enum connman_element_type type,
 182                                                         DBusMessageIter *iter)
 183 {
 184         struct append_filter filter = { type, iter };
 185         GNode *node;
 186
 187         DBG("");
 188
 189         if (element != NULL) {
 190                 node = g_node_find(element_root, G_PRE_ORDER,
 191                                                 G_TRAVERSE_ALL, element);
 192                 if (node == NULL)
 193                         return;
 194         } else
 195                 node = element_root;
 196
 197         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 198                                                 append_path, &filter);
 199 }
 200
 201 struct count_data {
 202         enum connman_element_type type;
 203         int count;
 204 };
 205
 206 static gboolean count_element(GNode *node, gpointer user_data)
 207 {
 208         struct connman_element *element = node->data;
 209         struct count_data *data = user_data;
 210
 211         DBG("element %p name %s", element, element->name);
 212
 213         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 214                 return FALSE;
 215
 216         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 217                                         data->type != element->type)
 218                 return FALSE;
 219
 220         data->count++;
 221
 222         return FALSE;
 223 }
 224
 225 int __connman_element_count(struct connman_element *element,
 226                                         enum connman_element_type type)
 227 {
 228         struct count_data data = { type, 0 };
 229         GNode *node;
 230
 231         DBG("");
 232
 233         if (element != NULL) {
 234                 node = g_node_find(element_root, G_PRE_ORDER,
 235                                                 G_TRAVERSE_ALL, element);
 236                 if (node == NULL)
 237                         return 0;
 238         } else
 239                 node = element_root;
 240
 241         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 242                                                 count_element, &data);
 243
 244         return data.count;
 245 }
 246
 247 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 248 {
 249         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 250                                                 element->network != NULL)
 251                 return element->network;
 252
 253         if (element->parent == NULL)
 254                 return NULL;
 255
 256         return __connman_element_get_network(element->parent);
 257 }
 258
 259 struct connman_service *__connman_element_get_service(struct connman_element *element)
 260 {
 261         struct connman_service *service = NULL;
 262         struct connman_network *network;
 263         struct connman_device *device;
 264         enum connman_device_type type;
 265
 266         device = __connman_element_get_device(element);
 267         if (device == NULL)
 268                 return NULL;
 269
 270         type = connman_device_get_type(device);
 271
 272         switch (type) {
 273         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 274         case CONNMAN_DEVICE_TYPE_VENDOR:
 275         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 276         case CONNMAN_DEVICE_TYPE_GPS:
 277         case CONNMAN_DEVICE_TYPE_MBM:
 278         case CONNMAN_DEVICE_TYPE_HSO:
 279         case CONNMAN_DEVICE_TYPE_NOZOMI:
 280         case CONNMAN_DEVICE_TYPE_HUAWEI:
 281         case CONNMAN_DEVICE_TYPE_NOVATEL:
 282                 break;
 283         case CONNMAN_DEVICE_TYPE_ETHERNET:
 284                 service = __connman_service_lookup_from_device(device);
 285                 break;
 286         case CONNMAN_DEVICE_TYPE_WIFI:
 287         case CONNMAN_DEVICE_TYPE_WIMAX:
 288                 network = __connman_element_get_network(element);
 289                 if (network == NULL)
 290                         return NULL;
 291                 service = __connman_service_lookup_from_network(network);
 292                 break;
 293         }
 294
 295         return service;
 296 }
 297
 298 struct connman_device *__connman_element_get_device(struct connman_element *element)
 299 {
 300         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 301                                                 element->device != NULL)
 302                 return element->device;
 303
 304         if (element->parent == NULL)
 305                 return NULL;
 306
 307         return __connman_element_get_device(element->parent);
 308 }
 309
 310 const char *__connman_element_get_device_path(struct connman_element *element)
 311 {
 312         struct connman_device *device;
 313
 314         device = __connman_element_get_device(element);
 315         if (device == NULL)
 316                 return NULL;
 317
 318         return connman_device_get_path(device);
 319 }
 320
 321 const char *__connman_element_get_network_path(struct connman_element *element)
 322 {
 323         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 324                                                 element->network != NULL)
 325                 return element->path;
 326
 327         if (element->parent == NULL)
 328                 return NULL;
 329
 330         return __connman_element_get_network_path(element->parent);
 331 }
 332
 333 struct find_data {
 334         enum connman_service_type type;
 335         struct connman_device *device;
 336 };
 337
 338 static gboolean find_device(GNode *node, gpointer user_data)
 339 {
 340         struct connman_element *element = node->data;
 341         struct find_data *data = user_data;
 342
 343         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 344                 return FALSE;
 345
 346         if (element->device == NULL)
 347                 return FALSE;
 348
 349         if (data->type != connman_device_get_type(element->device))
 350                 return FALSE;
 351
 352         data->device = element->device;
 353
 354         return TRUE;
 355 }
 356
 357 struct connman_device *__connman_element_find_device(enum connman_service_type type)
 358 {
 359         struct find_data data = { .type = type, .device = NULL };
 360
 361         g_node_traverse(element_root, G_PRE_ORDER,
 362                                 G_TRAVERSE_ALL, -1, find_device, &data);
 363
 364         return data.device;
 365 }
 366
 367 static gboolean request_scan(GNode *node, gpointer user_data)
 368 {
 369         struct connman_element *element = node->data;
 370         struct find_data *data = user_data;
 371         enum connman_service_type type;
 372
 373         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 374                 return FALSE;
 375
 376         if (element->device == NULL)
 377                 return FALSE;
 378
 379         type = __connman_device_get_service_type(element->device);
 380
 381         switch (type) {
 382         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 383         case CONNMAN_SERVICE_TYPE_ETHERNET:
 384         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 385         case CONNMAN_SERVICE_TYPE_CELLULAR:
 386                 return FALSE;
 387         case CONNMAN_SERVICE_TYPE_WIFI:
 388         case CONNMAN_SERVICE_TYPE_WIMAX:
 389                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 390                                                         data->type != type)
 391                         return FALSE;
 392                 break;
 393         }
 394
 395         __connman_device_scan(element->device);
 396
 397         return FALSE;
 398 }
 399
 400 int __connman_element_request_scan(enum connman_service_type type)
 401 {
 402         struct find_data data = { .type = type, .device = NULL };
 403
 404         g_node_traverse(element_root, G_PRE_ORDER,
 405                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 406
 407         return 0;
 408 }
 409
 410 static gboolean enable_technology(GNode *node, gpointer user_data)
 411 {
 412         struct connman_element *element = node->data;
 413         struct find_data *data = user_data;
 414         enum connman_service_type type;
 415
 416         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 417                 return FALSE;
 418
 419         if (element->device == NULL)
 420                 return FALSE;
 421
 422         type = __connman_device_get_service_type(element->device);
 423
 424         switch (type) {
 425         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 426                 return FALSE;
 427         case CONNMAN_SERVICE_TYPE_ETHERNET:
 428         case CONNMAN_SERVICE_TYPE_WIFI:
 429         case CONNMAN_SERVICE_TYPE_WIMAX:
 430         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 431         case CONNMAN_SERVICE_TYPE_CELLULAR:
 432                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 433                                                         data->type != type)
 434                         return FALSE;
 435                 break;
 436         }
 437
 438         __connman_device_enable_persistent(element->device);
 439
 440         return FALSE;
 441 }
 442
 443 int __connman_element_enable_technology(enum connman_service_type type)
 444 {
 445         struct find_data data = { .type = type, .device = NULL };
 446
 447         g_node_traverse(element_root, G_PRE_ORDER,
 448                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 449
 450         return 0;
 451 }
 452
 453 static gboolean disable_technology(GNode *node, gpointer user_data)
 454 {
 455         struct connman_element *element = node->data;
 456         struct find_data *data = user_data;
 457         enum connman_service_type type;
 458
 459         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 460                 return FALSE;
 461
 462         if (element->device == NULL)
 463                 return FALSE;
 464
 465         type = __connman_device_get_service_type(element->device);
 466
 467         switch (type) {
 468         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 469                 return FALSE;
 470         case CONNMAN_SERVICE_TYPE_ETHERNET:
 471         case CONNMAN_SERVICE_TYPE_WIFI:
 472         case CONNMAN_SERVICE_TYPE_WIMAX:
 473         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 474         case CONNMAN_SERVICE_TYPE_CELLULAR:
 475                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 476                                                         data->type != type)
 477                         return FALSE;
 478                 break;
 479         }
 480
 481         __connman_device_disable_persistent(element->device);
 482
 483         return FALSE;
 484 }
 485
 486 int __connman_element_disable_technology(enum connman_service_type type)
 487 {
 488         struct find_data data = { .type = type, .device = NULL };
 489
 490         g_node_traverse(element_root, G_PRE_ORDER,
 491                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 492
 493         return 0;
 494 }
 495
 496 static gint compare_priority(gconstpointer a, gconstpointer b)
 497 {
 498         const struct connman_driver *driver1 = a;
 499         const struct connman_driver *driver2 = b;
 500
 501         return driver2->priority - driver1->priority;
 502 }
 503
 504 static gboolean match_driver(struct connman_element *element,
 505                                         struct connman_driver *driver)
 506 {
 507         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 508                 return FALSE;
 509
 510         if (element->type == driver->type ||
 511                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 512                 return TRUE;
 513
 514         return FALSE;
 515 }
 516
 517 static gboolean probe_driver(GNode *node, gpointer data)
 518 {
 519         struct connman_element *element = node->data;
 520         struct connman_driver *driver = data;
 521
 522         DBG("element %p name %s", element, element->name);
 523
 524         if (!element->driver && match_driver(element, driver) == TRUE) {
 525                 if (driver->probe(element) < 0)
 526                         return FALSE;
 527
 528                 __connman_element_lock(element);
 529                 element->driver = driver;
 530                 __connman_element_unlock(element);
 531         }
 532
 533         return FALSE;
 534 }
 535
 536 void __connman_driver_rescan(struct connman_driver *driver)
 537 {
 538         DBG("driver %p name %s", driver, driver->name);
 539
 540         if (!driver->probe)
 541                 return;
 542
 543         if (element_root != NULL)
 544                 g_node_traverse(element_root, G_PRE_ORDER,
 545                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 546 }
 547
 548 /**
 549  * connman_driver_register:
 550  * @driver: driver definition
 551  *
 552  * Register a new driver
 553  *
 554  * Returns: %0 on success
 555  */
 556 int connman_driver_register(struct connman_driver *driver)
 557 {
 558         DBG("driver %p name %s", driver, driver->name);
 559
 560         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 561                 return -EINVAL;
 562
 563         if (!driver->probe)
 564                 return -EINVAL;
 565
 566         driver_list = g_slist_insert_sorted(driver_list, driver,
 567                                                         compare_priority);
 568
 569         if (started == FALSE)
 570                 return 0;
 571
 572         if (element_root != NULL)
 573                 g_node_traverse(element_root, G_PRE_ORDER,
 574                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 575
 576         return 0;
 577 }
 578
 579 static gboolean remove_driver(GNode *node, gpointer data)
 580 {
 581         struct connman_element *element = node->data;
 582         struct connman_driver *driver = data;
 583
 584         DBG("element %p name %s", element, element->name);
 585
 586         if (element->driver == driver) {
 587                 if (driver->remove)
 588                         driver->remove(element);
 589
 590                 __connman_element_lock(element);
 591                 element->driver = NULL;
 592                 __connman_element_unlock(element);
 593         }
 594
 595         return FALSE;
 596 }
 597
 598 /**
 599  * connman_driver_unregister:
 600  * @driver: driver definition
 601  *
 602  * Remove a previously registered driver
 603  */
 604 void connman_driver_unregister(struct connman_driver *driver)
 605 {
 606         DBG("driver %p name %s", driver, driver->name);
 607
 608         driver_list = g_slist_remove(driver_list, driver);
 609
 610         if (element_root != NULL)
 611                 g_node_traverse(element_root, G_POST_ORDER,
 612                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 613 }
 614
 615 static void unregister_property(gpointer data)
 616 {
 617         struct connman_property *property = data;
 618
 619         DBG("property %p", property);
 620
 621         g_free(property->value);
 622         g_free(property);
 623 }
 624
 625 void __connman_element_initialize(struct connman_element *element)
 626 {
 627         DBG("element %p", element);
 628
 629         element->refcount = 1;
 630
 631         element->name    = NULL;
 632         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 633         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 634         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 635         element->index   = -1;
 636         element->enabled = FALSE;
 637
 638         element->configuring = FALSE;
 639
 640         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 641                                                 g_free, unregister_property);
 642 }
 643
 644 /**
 645  * connman_element_create:
 646  * @name: element name
 647  *
 648  * Allocate a new element and assign the given #name to it. If the name
 649  * is #NULL, it will be later on created based on the element type.
 650  *
 651  * Returns: a newly-allocated #connman_element structure
 652  */
 653 struct connman_element *connman_element_create(const char *name)
 654 {
 655         struct connman_element *element;
 656
 657         element = g_try_new0(struct connman_element, 1);
 658         if (element == NULL)
 659                 return NULL;
 660
 661         DBG("element %p", element);
 662
 663         __connman_element_initialize(element);
 664
 665         return element;
 666 }
 667
 668 struct connman_element *connman_element_ref(struct connman_element *element)
 669 {
 670         DBG("element %p name %s refcount %d", element, element->name,
 671                                 g_atomic_int_get(&element->refcount) + 1);
 672
 673         g_atomic_int_inc(&element->refcount);
 674
 675         return element;
 676 }
 677
 678 static void free_properties(struct connman_element *element)
 679 {
 680         DBG("element %p name %s", element, element->name);
 681
 682         __connman_element_lock(element);
 683
 684         g_hash_table_destroy(element->properties);
 685         element->properties = NULL;
 686
 687         __connman_element_unlock(element);
 688 }
 689
 690 void connman_element_unref(struct connman_element *element)
 691 {
 692         DBG("element %p name %s refcount %d", element, element->name,
 693                                 g_atomic_int_get(&element->refcount) - 1);
 694
 695         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 696                 if (element->destruct)
 697                         element->destruct(element);
 698                 free_properties(element);
 699                 g_free(element->ipv4.address);
 700                 g_free(element->ipv4.netmask);
 701                 g_free(element->ipv4.gateway);
 702                 g_free(element->ipv4.network);
 703                 g_free(element->ipv4.broadcast);
 704                 g_free(element->ipv4.nameserver);
 705                 g_free(element->devname);
 706                 g_free(element->path);
 707                 g_free(element->name);
 708                 g_free(element);
 709         }
 710 }
 711
 712 static int set_static_property(struct connman_element *element,
 713                                 const char *name, int type, const void *value)
 714 {
 715         struct connman_property *property;
 716
 717         DBG("element %p name %s", element, element->name);
 718
 719         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 720                 return -EINVAL;
 721
 722         property = g_try_new0(struct connman_property, 1);
 723         if (property == NULL)
 724                 return -ENOMEM;
 725
 726         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 727         property->type = type;
 728
 729         DBG("name %s type %d value %p", name, type, value);
 730
 731         switch (type) {
 732         case DBUS_TYPE_STRING:
 733                 property->value = g_strdup(*((const char **) value));
 734                 break;
 735         case DBUS_TYPE_BYTE:
 736                 property->value = g_try_malloc(1);
 737                 if (property->value != NULL)
 738                         memcpy(property->value, value, 1);
 739                 break;
 740         }
 741
 742         __connman_element_lock(element);
 743
 744         g_hash_table_replace(element->properties, g_strdup(name), property);
 745
 746         __connman_element_unlock(element);
 747
 748         return 0;
 749 }
 750
 751 static int set_static_array_property(struct connman_element *element,
 752                         const char *name, int type, const void *value, int len)
 753 {
 754         struct connman_property *property;
 755
 756         DBG("element %p name %s", element, element->name);
 757
 758         if (type != DBUS_TYPE_BYTE)
 759                 return -EINVAL;
 760
 761         property = g_try_new0(struct connman_property, 1);
 762         if (property == NULL)
 763                 return -ENOMEM;
 764
 765         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 766         property->type    = DBUS_TYPE_ARRAY;
 767         property->subtype = type;
 768
 769         DBG("name %s type %d value %p", name, type, value);
 770
 771         switch (type) {
 772         case DBUS_TYPE_BYTE:
 773                 property->value = g_try_malloc(len);
 774                 if (property->value != NULL) {
 775                         memcpy(property->value,
 776                                 *((const unsigned char **) value), len);
 777                         property->size = len;
 778                 }
 779                 break;
 780         }
 781
 782         __connman_element_lock(element);
 783
 784         g_hash_table_replace(element->properties, g_strdup(name), property);
 785
 786         __connman_element_unlock(element);
 787
 788         return 0;
 789 }
 790
 791 #if 0
 792 static int set_property(struct connman_element *element,
 793                                 enum connman_property_id id, const void *value)
 794 {
 795         switch (id) {
 796         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 797                 __connman_element_lock(element);
 798                 g_free(element->ipv4.address);
 799                 element->ipv4.address = g_strdup(*((const char **) value));
 800                 __connman_element_unlock(element);
 801                 break;
 802         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 803                 __connman_element_lock(element);
 804                 g_free(element->ipv4.netmask);
 805                 element->ipv4.netmask = g_strdup(*((const char **) value));
 806                 __connman_element_unlock(element);
 807                 break;
 808         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 809                 __connman_element_lock(element);
 810                 g_free(element->ipv4.gateway);
 811                 element->ipv4.gateway = g_strdup(*((const char **) value));
 812                 __connman_element_unlock(element);
 813                 break;
 814         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 815                 __connman_element_lock(element);
 816                 g_free(element->ipv4.broadcast);
 817                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 818                 __connman_element_unlock(element);
 819                 break;
 820         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 821                 __connman_element_lock(element);
 822                 g_free(element->ipv4.nameserver);
 823                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 824                 __connman_element_unlock(element);
 825                 break;
 826         default:
 827                 return -EINVAL;
 828         }
 829
 830         return 0;
 831 }
 832 #endif
 833
 834 int connman_element_get_value(struct connman_element *element,
 835                                 enum connman_property_id id, void *value)
 836 {
 837         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 838                 return -EINVAL;
 839
 840         switch (id) {
 841         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 842                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 843                         return connman_element_get_value(element->parent,
 844                                                                 id, value);
 845                 __connman_element_lock(element);
 846                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 847                 __connman_element_unlock(element);
 848                 break;
 849         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 850                 if (element->ipv4.address == NULL)
 851                         return connman_element_get_value(element->parent,
 852                                                                 id, value);
 853                 __connman_element_lock(element);
 854                 *((char **) value) = element->ipv4.address;
 855                 __connman_element_unlock(element);
 856                 break;
 857         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 858                 if (element->ipv4.netmask == NULL)
 859                         return connman_element_get_value(element->parent,
 860                                                                 id, value);
 861                 __connman_element_lock(element);
 862                 *((char **) value) = element->ipv4.netmask;
 863                 __connman_element_unlock(element);
 864                 break;
 865         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 866                 if (element->ipv4.gateway == NULL)
 867                         return connman_element_get_value(element->parent,
 868                                                                 id, value);
 869                 __connman_element_lock(element);
 870                 *((char **) value) = element->ipv4.gateway;
 871                 __connman_element_unlock(element);
 872                 break;
 873         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 874                 if (element->ipv4.broadcast == NULL)
 875                         return connman_element_get_value(element->parent,
 876                                                                 id, value);
 877                 __connman_element_lock(element);
 878                 *((char **) value) = element->ipv4.broadcast;
 879                 __connman_element_unlock(element);
 880                 break;
 881         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 882                 if (element->ipv4.nameserver == NULL)
 883                         return connman_element_get_value(element->parent,
 884                                                                 id, value);
 885                 __connman_element_lock(element);
 886                 *((char **) value) = element->ipv4.nameserver;
 887                 __connman_element_unlock(element);
 888                 break;
 889         default:
 890                 return -EINVAL;
 891         }
 892
 893         return 0;
 894 }
 895
 896 static gboolean get_static_property(struct connman_element *element,
 897                                                 const char *name, void *value)
 898 {
 899         struct connman_property *property;
 900         gboolean found = FALSE;
 901
 902         DBG("element %p name %s", element, element->name);
 903
 904         __connman_element_lock(element);
 905
 906         property = g_hash_table_lookup(element->properties, name);
 907         if (property != NULL) {
 908                 switch (property->type) {
 909                 case DBUS_TYPE_STRING:
 910                         *((char **) value) = property->value;
 911                         found = TRUE;
 912                         break;
 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_uint8:
1008  * @element: element structure
1009  * @key: unique identifier
1010  * @value: integer value
1011  *
1012  * Set integer value for specific key
1013  */
1014 int connman_element_set_uint8(struct connman_element *element,
1015                                         const char *key, connman_uint8_t value)
1016 {
1017         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
1018 }
1019
1020 /**
1021  * connman_element_get_uint8:
1022  * @element: element structure
1023  * @key: unique identifier
1024  *
1025  * Get integer value for specific key
1026  */
1027 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
1028                                                         const char *key)
1029 {
1030         connman_uint8_t value;
1031
1032         if (get_static_property(element, key, &value) == FALSE)
1033                 return 0;
1034
1035         return value;
1036 }
1037
1038 /**
1039  * connman_element_set_blob:
1040  * @element: element structure
1041  * @key: unique identifier
1042  * @data: blob data
1043  * @size: blob size
1044  *
1045  * Set binary blob value for specific key
1046  */
1047 int connman_element_set_blob(struct connman_element *element,
1048                         const char *key, const void *data, unsigned int size)
1049 {
1050         return set_static_array_property(element, key,
1051                                                 DBUS_TYPE_BYTE, &data, size);
1052 }
1053
1054 /**
1055  * connman_element_get_blob:
1056  * @element: element structure
1057  * @key: unique identifier
1058  * @size: pointer to blob size
1059  *
1060  * Get binary blob value for specific key
1061  */
1062 const void *connman_element_get_blob(struct connman_element *element,
1063                                         const char *key, unsigned int *size)
1064 {
1065         void *value;
1066
1067         if (get_static_array_property(element, key, &value, size) == FALSE)
1068                 return NULL;
1069
1070         return value;
1071 }
1072
1073 int __connman_element_append_ipv4(struct connman_element *element,
1074                                                 DBusMessageIter *dict)
1075 {
1076         const char *method = NULL;
1077         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1078         const char *broadcast = NULL, *nameserver = NULL;
1079
1080         connman_element_get_value(element,
1081                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
1082
1083         connman_element_get_value(element,
1084                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
1085         connman_element_get_value(element,
1086                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
1087         connman_element_get_value(element,
1088                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
1089         connman_element_get_value(element,
1090                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
1091         connman_element_get_value(element,
1092                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
1093
1094         if (method != NULL)
1095                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
1096                                                 DBUS_TYPE_STRING, &method);
1097
1098         if (address != NULL)
1099                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
1100                                                 DBUS_TYPE_STRING, &address);
1101
1102         if (netmask != NULL)
1103                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
1104                                                 DBUS_TYPE_STRING, &netmask);
1105
1106         if (gateway != NULL)
1107                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
1108                                                 DBUS_TYPE_STRING, &gateway);
1109
1110         if (broadcast != NULL)
1111                 connman_dbus_dict_append_variant(dict, "IPv4.Broadcast",
1112                                                 DBUS_TYPE_STRING, &broadcast);
1113
1114         if (nameserver != NULL)
1115                 connman_dbus_dict_append_variant(dict, "IPv4.Nameserver",
1116                                                 DBUS_TYPE_STRING, &nameserver);
1117
1118         return 0;
1119 }
1120
1121 int __connman_element_set_ipv4(struct connman_element *element,
1122                                 const char *name, DBusMessageIter *value)
1123 {
1124         int type;
1125
1126         type = dbus_message_iter_get_arg_type(value);
1127
1128         if (g_str_equal(name, "IPv4.Method") == TRUE) {
1129                 enum connman_ipconfig_method method;
1130                 const char *str;
1131
1132                 if (type != DBUS_TYPE_STRING)
1133                         return -EINVAL;
1134
1135                 dbus_message_iter_get_basic(value, &str);
1136                 method = __connman_ipconfig_string2method(str);
1137                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
1138                         return -EINVAL;
1139
1140                 if (method == element->ipv4.method)
1141                         return -EALREADY;
1142
1143                 element->ipv4.method = method;
1144
1145                 connman_element_update(element);
1146         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
1147                 const char *address;
1148
1149                 if (type != DBUS_TYPE_STRING)
1150                         return -EINVAL;
1151
1152                 dbus_message_iter_get_basic(value, &address);
1153
1154                 g_free(element->ipv4.address);
1155                 element->ipv4.address = g_strdup(address);
1156
1157                 connman_element_update(element);
1158         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
1159                 const char *netmask;
1160
1161                 if (type != DBUS_TYPE_STRING)
1162                         return -EINVAL;
1163
1164                 dbus_message_iter_get_basic(value, &netmask);
1165
1166                 g_free(element->ipv4.netmask);
1167                 element->ipv4.netmask = g_strdup(netmask);
1168
1169                 connman_element_update(element);
1170         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1171                 const char *gateway;
1172
1173                 if (type != DBUS_TYPE_STRING)
1174                         return -EINVAL;
1175
1176                 dbus_message_iter_get_basic(value, &gateway);
1177
1178                 g_free(element->ipv4.gateway);
1179                 element->ipv4.gateway = g_strdup(gateway);
1180
1181                 connman_element_update(element);
1182         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1183                 const char *broadcast;
1184
1185                 if (type != DBUS_TYPE_STRING)
1186                         return -EINVAL;
1187
1188                 dbus_message_iter_get_basic(value, &broadcast);
1189
1190                 g_free(element->ipv4.broadcast);
1191                 element->ipv4.broadcast = g_strdup(broadcast);
1192
1193                 connman_element_update(element);
1194         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1195                 const char *nameserver;
1196
1197                 if (type != DBUS_TYPE_STRING)
1198                         return -EINVAL;
1199
1200                 dbus_message_iter_get_basic(value, &nameserver);
1201
1202                 g_free(element->ipv4.nameserver);
1203                 element->ipv4.nameserver = g_strdup(nameserver);
1204
1205                 connman_element_update(element);
1206         }
1207
1208         return 0;
1209 }
1210
1211 static void append_state(DBusMessageIter *entry, const char *state)
1212 {
1213         DBusMessageIter value;
1214         const char *key = "State";
1215
1216         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1217
1218         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1219                                         DBUS_TYPE_STRING_AS_STRING, &value);
1220         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1221         dbus_message_iter_close_container(entry, &value);
1222 }
1223
1224 static void emit_state_change(DBusConnection *conn, const char *state)
1225 {
1226         DBusMessage *signal;
1227         DBusMessageIter entry;
1228
1229         DBG("conn %p", conn);
1230
1231         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1232                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1233         if (signal == NULL)
1234                 return;
1235
1236         dbus_message_iter_init_append(signal, &entry);
1237
1238         append_state(&entry, state);
1239
1240         g_dbus_send_message(conn, signal);
1241
1242         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1243                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1244         if (signal == NULL)
1245                 return;
1246
1247         dbus_message_iter_init_append(signal, &entry);
1248         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &state);
1249
1250         g_dbus_send_message(conn, signal);
1251 }
1252
1253 static void probe_element(struct connman_element *element)
1254 {
1255         GSList *list;
1256
1257         DBG("element %p name %s", element, element->name);
1258
1259         for (list = driver_list; list; list = list->next) {
1260                 struct connman_driver *driver = list->data;
1261
1262                 if (match_driver(element, driver) == FALSE)
1263                         continue;
1264
1265                 DBG("driver %p name %s", driver, driver->name);
1266
1267                 if (driver->probe(element) == 0) {
1268                         __connman_element_lock(element);
1269                         element->driver = driver;
1270                         __connman_element_unlock(element);
1271                         break;
1272                 }
1273         }
1274 }
1275
1276 static void register_element(gpointer data, gpointer user_data)
1277 {
1278         struct connman_element *element = data;
1279         const gchar *basepath;
1280         GNode *node;
1281
1282         __connman_element_lock(element);
1283
1284         if (element->parent) {
1285                 node = g_node_find(element_root, G_PRE_ORDER,
1286                                         G_TRAVERSE_ALL, element->parent);
1287                 basepath = element->parent->path;
1288         } else {
1289                 element->parent = element_root->data;
1290
1291                 node = element_root;
1292                 basepath = "/device";
1293         }
1294
1295         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1296
1297         __connman_element_unlock(element);
1298
1299         if (node == NULL) {
1300                 connman_error("Element registration for %s failed",
1301                                                         element->path);
1302                 return;
1303         }
1304
1305         DBG("element %p path %s", element, element->path);
1306
1307         g_node_append_data(node, element);
1308
1309         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1310                 element->parent->configuring = TRUE;
1311
1312 #if 0
1313                 if (__connman_element_count(NULL,
1314                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1315                         emit_state_change(connection, "connecting");
1316 #endif
1317         }
1318
1319         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1320                 struct connman_element *parent = element->parent;
1321
1322                 while (parent) {
1323                         parent->configuring = FALSE;
1324                         parent = parent->parent;
1325                 }
1326
1327                 if (__connman_element_count(NULL,
1328                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1329                         emit_state_change(connection, "online");
1330         }
1331
1332         emit_element_signal(connection, "ElementAdded", element);
1333
1334         if (started == FALSE)
1335                 return;
1336
1337         probe_element(element);
1338 }
1339
1340 /**
1341  * connman_element_register:
1342  * @element: the element to register
1343  * @parent: the parent to register the element with
1344  *
1345  * Register an element with the core. It will be register under the given
1346  * parent of if %NULL is provided under the root element.
1347  *
1348  * Returns: %0 on success
1349  */
1350 int connman_element_register(struct connman_element *element,
1351                                         struct connman_element *parent)
1352 {
1353         DBG("element %p name %s parent %p", element, element->name, parent);
1354
1355         if (element->devname == NULL)
1356                 element->devname = g_strdup(element->name);
1357
1358         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1359                 if (g_pattern_match_simple(device_filter,
1360                                                 element->devname) == FALSE) {
1361                         DBG("ignoring %s [%s] device", element->name,
1362                                                         element->devname);
1363                         return -EPERM;
1364                 }
1365         }
1366
1367         if (connman_element_ref(element) == NULL)
1368                 return -EINVAL;
1369
1370         __connman_element_lock(element);
1371
1372         if (element->name == NULL) {
1373                 element->name = g_strdup(type2string(element->type));
1374                 if (element->name == NULL) {
1375                         __connman_element_unlock(element);
1376                         return -EINVAL;
1377                 }
1378         }
1379
1380         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1381                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1382
1383         element->parent = parent;
1384
1385         __connman_element_unlock(element);
1386
1387         register_element(element, NULL);
1388
1389         return 0;
1390 }
1391
1392 static gboolean remove_element(GNode *node, gpointer user_data)
1393 {
1394         struct connman_element *element = node->data;
1395         struct connman_element *root = user_data;
1396
1397         DBG("element %p name %s", element, element->name);
1398
1399         if (element == root)
1400                 return FALSE;
1401
1402         if (node != NULL)
1403                 g_node_unlink(node);
1404
1405         if (element->driver) {
1406                 if (element->driver->remove)
1407                         element->driver->remove(element);
1408
1409                 __connman_element_lock(element);
1410                 element->driver = NULL;
1411                 __connman_element_unlock(element);
1412         }
1413
1414         if (node != NULL)
1415                 g_node_destroy(node);
1416
1417         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1418                 if (__connman_element_count(NULL,
1419                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1420                         emit_state_change(connection, "offline");
1421         }
1422
1423         emit_element_signal(connection, "ElementRemoved", element);
1424
1425         connman_element_unref(element);
1426
1427         return FALSE;
1428 }
1429
1430 void connman_element_unregister(struct connman_element *element)
1431 {
1432         GNode *node;
1433
1434         DBG("element %p name %s", element, element->name);
1435
1436         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1437
1438         if (node != NULL)
1439                 g_node_traverse(node, G_POST_ORDER,
1440                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1441 }
1442
1443 void connman_element_unregister_children(struct connman_element *element)
1444 {
1445         GNode *node;
1446
1447         DBG("element %p name %s", element, element->name);
1448
1449         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1450
1451         if (node != NULL)
1452                 g_node_traverse(node, G_POST_ORDER,
1453                                 G_TRAVERSE_ALL, -1, remove_element, element);
1454 }
1455
1456 static gboolean update_element(GNode *node, gpointer user_data)
1457 {
1458         struct connman_element *element = node->data;
1459
1460         DBG("element %p name %s", element, element->name);
1461
1462         if (element->driver && element->driver->update)
1463                 element->driver->update(element);
1464
1465         emit_element_signal(connection, "ElementUpdated", element);
1466
1467         return FALSE;
1468 }
1469
1470 void connman_element_update(struct connman_element *element)
1471 {
1472         GNode *node;
1473
1474         DBG("element %p name %s", element, element->name);
1475
1476         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1477
1478         if (node != NULL)
1479                 g_node_traverse(node, G_PRE_ORDER,
1480                                 G_TRAVERSE_ALL, -1, update_element, element);
1481 }
1482
1483 int connman_element_set_enabled(struct connman_element *element,
1484                                                         gboolean enabled)
1485 {
1486         if (element->enabled == enabled)
1487                 return 0;
1488
1489         element->enabled = enabled;
1490
1491         connman_element_update(element);
1492
1493         return 0;
1494 }
1495
1496 static enum connman_service_error convert_error(enum connman_element_error error)
1497 {
1498         switch (error) {
1499         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1500         case CONNMAN_ELEMENT_ERROR_FAILED:
1501                 break;
1502         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1503                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1504         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1505                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1506         }
1507
1508         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1509 }
1510
1511 /**
1512  * connman_element_set_error:
1513  * @element: element structure
1514  * @error: error identifier
1515  *
1516  * Set error state and specific error identifier
1517  */
1518 void connman_element_set_error(struct connman_element *element,
1519                                         enum connman_element_error error)
1520 {
1521         struct connman_service *service;
1522
1523         DBG("element %p error %d", element, error);
1524
1525         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1526                 return;
1527
1528         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1529         element->error = error;
1530
1531         if (element->driver && element->driver->change)
1532                 element->driver->change(element);
1533
1534         service = __connman_element_get_service(element);
1535         __connman_service_indicate_error(service, convert_error(error));
1536 }
1537
1538 int __connman_element_init(const char *device, const char *nodevice)
1539 {
1540         struct connman_element *element;
1541
1542         DBG("");
1543
1544         connection = connman_dbus_get_connection();
1545         if (connection == NULL)
1546                 return -EIO;
1547
1548         device_filter = g_strdup(device);
1549
1550         element = connman_element_create("root");
1551
1552         element->path = g_strdup("/");
1553         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1554
1555         element_root = g_node_new(element);
1556
1557         __connman_notifier_init();
1558         __connman_service_init();
1559         __connman_network_init();
1560         __connman_device_init();
1561
1562         return 0;
1563 }
1564
1565 static gboolean probe_node(GNode *node, gpointer data)
1566 {
1567         struct connman_element *element = node->data;
1568
1569         DBG("element %p name %s", element, element->name);
1570
1571         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1572                 return FALSE;
1573
1574         if (element->driver)
1575                 return FALSE;
1576
1577         probe_element(element);
1578
1579         return FALSE;
1580 }
1581
1582 void __connman_element_start(void)
1583 {
1584         DBG("");
1585
1586         __connman_storage_init_profile();
1587
1588         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1589                                                         probe_node, NULL);
1590
1591         started = TRUE;
1592
1593         __connman_rtnl_start();
1594         __connman_udev_start();
1595
1596         __connman_connection_init();
1597         __connman_ipv4_init();
1598
1599         if (__connman_rfkill_init() < 0)
1600                 __connman_udev_enable_rfkill_processing();
1601 }
1602
1603 void __connman_element_stop(void)
1604 {
1605         DBG("");
1606
1607         __connman_rfkill_cleanup();
1608
1609         __connman_ipv4_cleanup();
1610         __connman_connection_cleanup();
1611 }
1612
1613 static gboolean free_driver(GNode *node, gpointer data)
1614 {
1615         struct connman_element *element = node->data;
1616
1617         DBG("element %p name %s", element, element->name);
1618
1619         if (element->driver) {
1620                 if (element->driver->remove)
1621                         element->driver->remove(element);
1622
1623                 __connman_element_lock(element);
1624                 element->driver = NULL;
1625                 __connman_element_unlock(element);
1626         }
1627
1628         return FALSE;
1629 }
1630
1631 static gboolean free_node(GNode *node, gpointer data)
1632 {
1633         struct connman_element *element = node->data;
1634
1635         DBG("element %p name %s", element, element->name);
1636
1637         if (g_node_depth(node) > 1)
1638                 connman_element_unregister(element);
1639
1640         return FALSE;
1641 }
1642
1643 void __connman_element_cleanup(void)
1644 {
1645         DBG("");
1646
1647         __connman_device_cleanup();
1648         __connman_network_cleanup();
1649         __connman_service_cleanup();
1650         __connman_notifier_cleanup();
1651
1652         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1653                                                         free_driver, NULL);
1654
1655         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1656                                                         free_node, NULL);
1657
1658         g_node_destroy(element_root);
1659         element_root = NULL;
1660
1661         g_free(device_filter);
1662
1663         if (connection == NULL)
1664                 return;
1665
1666         dbus_connection_unref(connection);
1667 }