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_device_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_device_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_device_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_type(element->device);
 380
 381         switch (type) {
 382         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 383         case CONNMAN_DEVICE_TYPE_VENDOR:
 384         case CONNMAN_DEVICE_TYPE_ETHERNET:
 385         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 386         case CONNMAN_DEVICE_TYPE_GPS:
 387         case CONNMAN_DEVICE_TYPE_MBM:
 388         case CONNMAN_DEVICE_TYPE_HSO:
 389         case CONNMAN_DEVICE_TYPE_NOZOMI:
 390         case CONNMAN_DEVICE_TYPE_HUAWEI:
 391         case CONNMAN_DEVICE_TYPE_NOVATEL:
 392                 return FALSE;
 393         case CONNMAN_DEVICE_TYPE_WIFI:
 394         case CONNMAN_DEVICE_TYPE_WIMAX:
 395                 if (data->type != CONNMAN_DEVICE_TYPE_UNKNOWN &&
 396                                                         data->type != type)
 397                         return FALSE;
 398                 break;
 399         }
 400
 401         __connman_device_scan(element->device);
 402
 403         return FALSE;
 404 }
 405
 406 int __connman_element_request_scan(enum connman_device_type type)
 407 {
 408         struct find_data data = { .type = type, .device = NULL };
 409
 410         g_node_traverse(element_root, G_PRE_ORDER,
 411                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 412
 413         return 0;
 414 }
 415
 416 static gboolean enable_technology(GNode *node, gpointer user_data)
 417 {
 418         struct connman_element *element = node->data;
 419         struct find_data *data = user_data;
 420         enum connman_device_type type;
 421
 422         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 423                 return FALSE;
 424
 425         if (element->device == NULL)
 426                 return FALSE;
 427
 428         type = connman_device_get_type(element->device);
 429
 430         switch (type) {
 431         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 432         case CONNMAN_DEVICE_TYPE_VENDOR:
 433         case CONNMAN_DEVICE_TYPE_MBM:
 434         case CONNMAN_DEVICE_TYPE_HSO:
 435         case CONNMAN_DEVICE_TYPE_NOZOMI:
 436         case CONNMAN_DEVICE_TYPE_HUAWEI:
 437         case CONNMAN_DEVICE_TYPE_NOVATEL:
 438                 return FALSE;
 439         case CONNMAN_DEVICE_TYPE_ETHERNET:
 440         case CONNMAN_DEVICE_TYPE_WIFI:
 441         case CONNMAN_DEVICE_TYPE_WIMAX:
 442         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 443         case CONNMAN_DEVICE_TYPE_GPS:
 444                 if (data->type != CONNMAN_DEVICE_TYPE_UNKNOWN &&
 445                                                         data->type != type)
 446                         return FALSE;
 447                 break;
 448         }
 449
 450         __connman_device_enable_persistent(element->device);
 451
 452         return FALSE;
 453 }
 454
 455 int __connman_element_enable_technology(enum connman_device_type type)
 456 {
 457         struct find_data data = { .type = type, .device = NULL };
 458
 459         g_node_traverse(element_root, G_PRE_ORDER,
 460                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 461
 462         return 0;
 463 }
 464
 465 static gboolean disable_technology(GNode *node, gpointer user_data)
 466 {
 467         struct connman_element *element = node->data;
 468         struct find_data *data = user_data;
 469         enum connman_device_type type;
 470
 471         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 472                 return FALSE;
 473
 474         if (element->device == NULL)
 475                 return FALSE;
 476
 477         type = connman_device_get_type(element->device);
 478
 479         switch (type) {
 480         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 481         case CONNMAN_DEVICE_TYPE_VENDOR:
 482         case CONNMAN_DEVICE_TYPE_MBM:
 483         case CONNMAN_DEVICE_TYPE_HSO:
 484         case CONNMAN_DEVICE_TYPE_NOZOMI:
 485         case CONNMAN_DEVICE_TYPE_HUAWEI:
 486         case CONNMAN_DEVICE_TYPE_NOVATEL:
 487                 return FALSE;
 488         case CONNMAN_DEVICE_TYPE_ETHERNET:
 489         case CONNMAN_DEVICE_TYPE_WIFI:
 490         case CONNMAN_DEVICE_TYPE_WIMAX:
 491         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 492         case CONNMAN_DEVICE_TYPE_GPS:
 493                 if (data->type != CONNMAN_DEVICE_TYPE_UNKNOWN &&
 494                                                         data->type != type)
 495                         return FALSE;
 496                 break;
 497         }
 498
 499         __connman_device_disable_persistent(element->device);
 500
 501         return FALSE;
 502 }
 503
 504 int __connman_element_disable_technology(enum connman_device_type type)
 505 {
 506         struct find_data data = { .type = type, .device = NULL };
 507
 508         g_node_traverse(element_root, G_PRE_ORDER,
 509                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 510
 511         return 0;
 512 }
 513
 514 static gint compare_priority(gconstpointer a, gconstpointer b)
 515 {
 516         const struct connman_driver *driver1 = a;
 517         const struct connman_driver *driver2 = b;
 518
 519         return driver2->priority - driver1->priority;
 520 }
 521
 522 static gboolean match_driver(struct connman_element *element,
 523                                         struct connman_driver *driver)
 524 {
 525         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 526                 return FALSE;
 527
 528         if (element->type == driver->type ||
 529                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 530                 return TRUE;
 531
 532         return FALSE;
 533 }
 534
 535 static gboolean probe_driver(GNode *node, gpointer data)
 536 {
 537         struct connman_element *element = node->data;
 538         struct connman_driver *driver = data;
 539
 540         DBG("element %p name %s", element, element->name);
 541
 542         if (!element->driver && match_driver(element, driver) == TRUE) {
 543                 if (driver->probe(element) < 0)
 544                         return FALSE;
 545
 546                 __connman_element_lock(element);
 547                 element->driver = driver;
 548                 __connman_element_unlock(element);
 549         }
 550
 551         return FALSE;
 552 }
 553
 554 void __connman_driver_rescan(struct connman_driver *driver)
 555 {
 556         DBG("driver %p name %s", driver, driver->name);
 557
 558         if (!driver->probe)
 559                 return;
 560
 561         if (element_root != NULL)
 562                 g_node_traverse(element_root, G_PRE_ORDER,
 563                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 564 }
 565
 566 /**
 567  * connman_driver_register:
 568  * @driver: driver definition
 569  *
 570  * Register a new driver
 571  *
 572  * Returns: %0 on success
 573  */
 574 int connman_driver_register(struct connman_driver *driver)
 575 {
 576         DBG("driver %p name %s", driver, driver->name);
 577
 578         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 579                 return -EINVAL;
 580
 581         if (!driver->probe)
 582                 return -EINVAL;
 583
 584         driver_list = g_slist_insert_sorted(driver_list, driver,
 585                                                         compare_priority);
 586
 587         if (started == FALSE)
 588                 return 0;
 589
 590         if (element_root != NULL)
 591                 g_node_traverse(element_root, G_PRE_ORDER,
 592                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 593
 594         return 0;
 595 }
 596
 597 static gboolean remove_driver(GNode *node, gpointer data)
 598 {
 599         struct connman_element *element = node->data;
 600         struct connman_driver *driver = data;
 601
 602         DBG("element %p name %s", element, element->name);
 603
 604         if (element->driver == driver) {
 605                 if (driver->remove)
 606                         driver->remove(element);
 607
 608                 __connman_element_lock(element);
 609                 element->driver = NULL;
 610                 __connman_element_unlock(element);
 611         }
 612
 613         return FALSE;
 614 }
 615
 616 /**
 617  * connman_driver_unregister:
 618  * @driver: driver definition
 619  *
 620  * Remove a previously registered driver
 621  */
 622 void connman_driver_unregister(struct connman_driver *driver)
 623 {
 624         DBG("driver %p name %s", driver, driver->name);
 625
 626         driver_list = g_slist_remove(driver_list, driver);
 627
 628         if (element_root != NULL)
 629                 g_node_traverse(element_root, G_POST_ORDER,
 630                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 631 }
 632
 633 static void unregister_property(gpointer data)
 634 {
 635         struct connman_property *property = data;
 636
 637         DBG("property %p", property);
 638
 639         g_free(property->value);
 640         g_free(property);
 641 }
 642
 643 void __connman_element_initialize(struct connman_element *element)
 644 {
 645         DBG("element %p", element);
 646
 647         element->refcount = 1;
 648
 649         element->name    = NULL;
 650         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 651         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 652         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 653         element->index   = -1;
 654         element->enabled = FALSE;
 655
 656         element->configuring = FALSE;
 657
 658         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 659                                                 g_free, unregister_property);
 660 }
 661
 662 /**
 663  * connman_element_create:
 664  * @name: element name
 665  *
 666  * Allocate a new element and assign the given #name to it. If the name
 667  * is #NULL, it will be later on created based on the element type.
 668  *
 669  * Returns: a newly-allocated #connman_element structure
 670  */
 671 struct connman_element *connman_element_create(const char *name)
 672 {
 673         struct connman_element *element;
 674
 675         element = g_try_new0(struct connman_element, 1);
 676         if (element == NULL)
 677                 return NULL;
 678
 679         DBG("element %p", element);
 680
 681         __connman_element_initialize(element);
 682
 683         return element;
 684 }
 685
 686 struct connman_element *connman_element_ref(struct connman_element *element)
 687 {
 688         DBG("element %p name %s refcount %d", element, element->name,
 689                                 g_atomic_int_get(&element->refcount) + 1);
 690
 691         g_atomic_int_inc(&element->refcount);
 692
 693         return element;
 694 }
 695
 696 static void free_properties(struct connman_element *element)
 697 {
 698         DBG("element %p name %s", element, element->name);
 699
 700         __connman_element_lock(element);
 701
 702         g_hash_table_destroy(element->properties);
 703         element->properties = NULL;
 704
 705         __connman_element_unlock(element);
 706 }
 707
 708 void connman_element_unref(struct connman_element *element)
 709 {
 710         DBG("element %p name %s refcount %d", element, element->name,
 711                                 g_atomic_int_get(&element->refcount) - 1);
 712
 713         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 714                 if (element->destruct)
 715                         element->destruct(element);
 716                 free_properties(element);
 717                 g_free(element->ipv4.address);
 718                 g_free(element->ipv4.netmask);
 719                 g_free(element->ipv4.gateway);
 720                 g_free(element->ipv4.network);
 721                 g_free(element->ipv4.broadcast);
 722                 g_free(element->ipv4.nameserver);
 723                 g_free(element->devname);
 724                 g_free(element->path);
 725                 g_free(element->name);
 726                 g_free(element);
 727         }
 728 }
 729
 730 static int set_static_property(struct connman_element *element,
 731                                 const char *name, int type, const void *value)
 732 {
 733         struct connman_property *property;
 734
 735         DBG("element %p name %s", element, element->name);
 736
 737         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 738                 return -EINVAL;
 739
 740         property = g_try_new0(struct connman_property, 1);
 741         if (property == NULL)
 742                 return -ENOMEM;
 743
 744         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 745         property->type = type;
 746
 747         DBG("name %s type %d value %p", name, type, value);
 748
 749         switch (type) {
 750         case DBUS_TYPE_STRING:
 751                 property->value = g_strdup(*((const char **) value));
 752                 break;
 753         case DBUS_TYPE_BYTE:
 754                 property->value = g_try_malloc(1);
 755                 if (property->value != NULL)
 756                         memcpy(property->value, value, 1);
 757                 break;
 758         }
 759
 760         __connman_element_lock(element);
 761
 762         g_hash_table_replace(element->properties, g_strdup(name), property);
 763
 764         __connman_element_unlock(element);
 765
 766         return 0;
 767 }
 768
 769 static int set_static_array_property(struct connman_element *element,
 770                         const char *name, int type, const void *value, int len)
 771 {
 772         struct connman_property *property;
 773
 774         DBG("element %p name %s", element, element->name);
 775
 776         if (type != DBUS_TYPE_BYTE)
 777                 return -EINVAL;
 778
 779         property = g_try_new0(struct connman_property, 1);
 780         if (property == NULL)
 781                 return -ENOMEM;
 782
 783         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 784         property->type    = DBUS_TYPE_ARRAY;
 785         property->subtype = type;
 786
 787         DBG("name %s type %d value %p", name, type, value);
 788
 789         switch (type) {
 790         case DBUS_TYPE_BYTE:
 791                 property->value = g_try_malloc(len);
 792                 if (property->value != NULL) {
 793                         memcpy(property->value,
 794                                 *((const unsigned char **) value), len);
 795                         property->size = len;
 796                 }
 797                 break;
 798         }
 799
 800         __connman_element_lock(element);
 801
 802         g_hash_table_replace(element->properties, g_strdup(name), property);
 803
 804         __connman_element_unlock(element);
 805
 806         return 0;
 807 }
 808
 809 #if 0
 810 static int set_property(struct connman_element *element,
 811                                 enum connman_property_id id, const void *value)
 812 {
 813         switch (id) {
 814         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 815                 __connman_element_lock(element);
 816                 g_free(element->ipv4.address);
 817                 element->ipv4.address = g_strdup(*((const char **) value));
 818                 __connman_element_unlock(element);
 819                 break;
 820         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 821                 __connman_element_lock(element);
 822                 g_free(element->ipv4.netmask);
 823                 element->ipv4.netmask = g_strdup(*((const char **) value));
 824                 __connman_element_unlock(element);
 825                 break;
 826         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 827                 __connman_element_lock(element);
 828                 g_free(element->ipv4.gateway);
 829                 element->ipv4.gateway = g_strdup(*((const char **) value));
 830                 __connman_element_unlock(element);
 831                 break;
 832         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 833                 __connman_element_lock(element);
 834                 g_free(element->ipv4.broadcast);
 835                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 836                 __connman_element_unlock(element);
 837                 break;
 838         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 839                 __connman_element_lock(element);
 840                 g_free(element->ipv4.nameserver);
 841                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 842                 __connman_element_unlock(element);
 843                 break;
 844         default:
 845                 return -EINVAL;
 846         }
 847
 848         return 0;
 849 }
 850 #endif
 851
 852 int connman_element_get_value(struct connman_element *element,
 853                                 enum connman_property_id id, void *value)
 854 {
 855         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 856                 return -EINVAL;
 857
 858         switch (id) {
 859         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 860                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 861                         return connman_element_get_value(element->parent,
 862                                                                 id, value);
 863                 __connman_element_lock(element);
 864                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 865                 __connman_element_unlock(element);
 866                 break;
 867         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 868                 if (element->ipv4.address == NULL)
 869                         return connman_element_get_value(element->parent,
 870                                                                 id, value);
 871                 __connman_element_lock(element);
 872                 *((char **) value) = element->ipv4.address;
 873                 __connman_element_unlock(element);
 874                 break;
 875         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 876                 if (element->ipv4.netmask == NULL)
 877                         return connman_element_get_value(element->parent,
 878                                                                 id, value);
 879                 __connman_element_lock(element);
 880                 *((char **) value) = element->ipv4.netmask;
 881                 __connman_element_unlock(element);
 882                 break;
 883         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 884                 if (element->ipv4.gateway == NULL)
 885                         return connman_element_get_value(element->parent,
 886                                                                 id, value);
 887                 __connman_element_lock(element);
 888                 *((char **) value) = element->ipv4.gateway;
 889                 __connman_element_unlock(element);
 890                 break;
 891         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 892                 if (element->ipv4.broadcast == NULL)
 893                         return connman_element_get_value(element->parent,
 894                                                                 id, value);
 895                 __connman_element_lock(element);
 896                 *((char **) value) = element->ipv4.broadcast;
 897                 __connman_element_unlock(element);
 898                 break;
 899         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 900                 if (element->ipv4.nameserver == NULL)
 901                         return connman_element_get_value(element->parent,
 902                                                                 id, value);
 903                 __connman_element_lock(element);
 904                 *((char **) value) = element->ipv4.nameserver;
 905                 __connman_element_unlock(element);
 906                 break;
 907         default:
 908                 return -EINVAL;
 909         }
 910
 911         return 0;
 912 }
 913
 914 static gboolean get_static_property(struct connman_element *element,
 915                                                 const char *name, void *value)
 916 {
 917         struct connman_property *property;
 918         gboolean found = FALSE;
 919
 920         DBG("element %p name %s", element, element->name);
 921
 922         __connman_element_lock(element);
 923
 924         property = g_hash_table_lookup(element->properties, name);
 925         if (property != NULL) {
 926                 switch (property->type) {
 927                 case DBUS_TYPE_STRING:
 928                         *((char **) value) = property->value;
 929                         found = TRUE;
 930                         break;
 931                 case DBUS_TYPE_BYTE:
 932                         memcpy(value, property->value, 1);
 933                         found = TRUE;
 934                         break;
 935                 }
 936         }
 937
 938         __connman_element_unlock(element);
 939
 940         if (found == FALSE && element->parent != NULL)
 941                 return get_static_property(element->parent, name, value);
 942
 943         return found;
 944 }
 945
 946 static gboolean get_static_array_property(struct connman_element *element,
 947                         const char *name, void *value, unsigned int *len)
 948 {
 949         struct connman_property *property;
 950         gboolean found = FALSE;
 951
 952         DBG("element %p name %s", element, element->name);
 953
 954         __connman_element_lock(element);
 955
 956         property = g_hash_table_lookup(element->properties, name);
 957         if (property != NULL) {
 958                 *((void **) value) = property->value;
 959                 *len = property->size;
 960                 found = TRUE;
 961         }
 962
 963         __connman_element_unlock(element);
 964
 965         return found;
 966 }
 967
 968 #if 0
 969 static gboolean match_static_property(struct connman_element *element,
 970                                         const char *name, const void *value)
 971 {
 972         struct connman_property *property;
 973         gboolean result = FALSE;
 974
 975         DBG("element %p name %s", element, element->name);
 976
 977         __connman_element_lock(element);
 978
 979         property = g_hash_table_lookup(element->properties, name);
 980         if (property != NULL) {
 981                 if (property->type == DBUS_TYPE_STRING)
 982                         result = g_str_equal(property->value,
 983                                                 *((const char **) value));
 984         }
 985
 986         __connman_element_unlock(element);
 987
 988         return result;
 989 }
 990 #endif
 991
 992 /**
 993  * connman_element_set_string:
 994  * @element: element structure
 995  * @key: unique identifier
 996  * @value: string value
 997  *
 998  * Set string value for specific key
 999  */
1000 int connman_element_set_string(struct connman_element *element,
1001                                         const char *key, const char *value)
1002 {
1003         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
1004 }
1005
1006 /**
1007  * connman_element_get_string:
1008  * @element: element structure
1009  * @key: unique identifier
1010  *
1011  * Get string value for specific key
1012  */
1013 const char *connman_element_get_string(struct connman_element *element,
1014                                                         const char *key)
1015 {
1016         const char *value;
1017
1018         if (get_static_property(element, key, &value) == FALSE)
1019                 return NULL;
1020
1021         return value;
1022 }
1023
1024 /**
1025  * connman_element_set_uint8:
1026  * @element: element structure
1027  * @key: unique identifier
1028  * @value: integer value
1029  *
1030  * Set integer value for specific key
1031  */
1032 int connman_element_set_uint8(struct connman_element *element,
1033                                         const char *key, connman_uint8_t value)
1034 {
1035         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
1036 }
1037
1038 /**
1039  * connman_element_get_uint8:
1040  * @element: element structure
1041  * @key: unique identifier
1042  *
1043  * Get integer value for specific key
1044  */
1045 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
1046                                                         const char *key)
1047 {
1048         connman_uint8_t value;
1049
1050         if (get_static_property(element, key, &value) == FALSE)
1051                 return 0;
1052
1053         return value;
1054 }
1055
1056 /**
1057  * connman_element_set_blob:
1058  * @element: element structure
1059  * @key: unique identifier
1060  * @data: blob data
1061  * @size: blob size
1062  *
1063  * Set binary blob value for specific key
1064  */
1065 int connman_element_set_blob(struct connman_element *element,
1066                         const char *key, const void *data, unsigned int size)
1067 {
1068         return set_static_array_property(element, key,
1069                                                 DBUS_TYPE_BYTE, &data, size);
1070 }
1071
1072 /**
1073  * connman_element_get_blob:
1074  * @element: element structure
1075  * @key: unique identifier
1076  * @size: pointer to blob size
1077  *
1078  * Get binary blob value for specific key
1079  */
1080 const void *connman_element_get_blob(struct connman_element *element,
1081                                         const char *key, unsigned int *size)
1082 {
1083         void *value;
1084
1085         if (get_static_array_property(element, key, &value, size) == FALSE)
1086                 return NULL;
1087
1088         return value;
1089 }
1090
1091 int __connman_element_append_ipv4(struct connman_element *element,
1092                                                 DBusMessageIter *dict)
1093 {
1094         const char *method = NULL;
1095         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1096         const char *broadcast = NULL, *nameserver = NULL;
1097
1098         connman_element_get_value(element,
1099                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
1100
1101         connman_element_get_value(element,
1102                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
1103         connman_element_get_value(element,
1104                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
1105         connman_element_get_value(element,
1106                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
1107         connman_element_get_value(element,
1108                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
1109         connman_element_get_value(element,
1110                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
1111
1112         if (method != NULL)
1113                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
1114                                                 DBUS_TYPE_STRING, &method);
1115
1116         if (address != NULL)
1117                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
1118                                                 DBUS_TYPE_STRING, &address);
1119
1120         if (netmask != NULL)
1121                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
1122                                                 DBUS_TYPE_STRING, &netmask);
1123
1124         if (gateway != NULL)
1125                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
1126                                                 DBUS_TYPE_STRING, &gateway);
1127
1128         if (broadcast != NULL)
1129                 connman_dbus_dict_append_variant(dict, "IPv4.Broadcast",
1130                                                 DBUS_TYPE_STRING, &broadcast);
1131
1132         if (nameserver != NULL)
1133                 connman_dbus_dict_append_variant(dict, "IPv4.Nameserver",
1134                                                 DBUS_TYPE_STRING, &nameserver);
1135
1136         return 0;
1137 }
1138
1139 int __connman_element_set_ipv4(struct connman_element *element,
1140                                 const char *name, DBusMessageIter *value)
1141 {
1142         int type;
1143
1144         type = dbus_message_iter_get_arg_type(value);
1145
1146         if (g_str_equal(name, "IPv4.Method") == TRUE) {
1147                 enum connman_ipconfig_method method;
1148                 const char *str;
1149
1150                 if (type != DBUS_TYPE_STRING)
1151                         return -EINVAL;
1152
1153                 dbus_message_iter_get_basic(value, &str);
1154                 method = __connman_ipconfig_string2method(str);
1155                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
1156                         return -EINVAL;
1157
1158                 if (method == element->ipv4.method)
1159                         return -EALREADY;
1160
1161                 element->ipv4.method = method;
1162
1163                 connman_element_update(element);
1164         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
1165                 const char *address;
1166
1167                 if (type != DBUS_TYPE_STRING)
1168                         return -EINVAL;
1169
1170                 dbus_message_iter_get_basic(value, &address);
1171
1172                 g_free(element->ipv4.address);
1173                 element->ipv4.address = g_strdup(address);
1174
1175                 connman_element_update(element);
1176         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
1177                 const char *netmask;
1178
1179                 if (type != DBUS_TYPE_STRING)
1180                         return -EINVAL;
1181
1182                 dbus_message_iter_get_basic(value, &netmask);
1183
1184                 g_free(element->ipv4.netmask);
1185                 element->ipv4.netmask = g_strdup(netmask);
1186
1187                 connman_element_update(element);
1188         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1189                 const char *gateway;
1190
1191                 if (type != DBUS_TYPE_STRING)
1192                         return -EINVAL;
1193
1194                 dbus_message_iter_get_basic(value, &gateway);
1195
1196                 g_free(element->ipv4.gateway);
1197                 element->ipv4.gateway = g_strdup(gateway);
1198
1199                 connman_element_update(element);
1200         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1201                 const char *broadcast;
1202
1203                 if (type != DBUS_TYPE_STRING)
1204                         return -EINVAL;
1205
1206                 dbus_message_iter_get_basic(value, &broadcast);
1207
1208                 g_free(element->ipv4.broadcast);
1209                 element->ipv4.broadcast = g_strdup(broadcast);
1210
1211                 connman_element_update(element);
1212         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1213                 const char *nameserver;
1214
1215                 if (type != DBUS_TYPE_STRING)
1216                         return -EINVAL;
1217
1218                 dbus_message_iter_get_basic(value, &nameserver);
1219
1220                 g_free(element->ipv4.nameserver);
1221                 element->ipv4.nameserver = g_strdup(nameserver);
1222
1223                 connman_element_update(element);
1224         }
1225
1226         return 0;
1227 }
1228
1229 static void append_state(DBusMessageIter *entry, const char *state)
1230 {
1231         DBusMessageIter value;
1232         const char *key = "State";
1233
1234         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1235
1236         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1237                                         DBUS_TYPE_STRING_AS_STRING, &value);
1238         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1239         dbus_message_iter_close_container(entry, &value);
1240 }
1241
1242 static void emit_state_change(DBusConnection *conn, const char *state)
1243 {
1244         DBusMessage *signal;
1245         DBusMessageIter entry;
1246
1247         DBG("conn %p", conn);
1248
1249         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1250                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1251         if (signal == NULL)
1252                 return;
1253
1254         dbus_message_iter_init_append(signal, &entry);
1255
1256         append_state(&entry, state);
1257
1258         g_dbus_send_message(conn, signal);
1259
1260         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1261                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1262         if (signal == NULL)
1263                 return;
1264
1265         dbus_message_iter_init_append(signal, &entry);
1266         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &state);
1267
1268         g_dbus_send_message(conn, signal);
1269 }
1270
1271 static void probe_element(struct connman_element *element)
1272 {
1273         GSList *list;
1274
1275         DBG("element %p name %s", element, element->name);
1276
1277         for (list = driver_list; list; list = list->next) {
1278                 struct connman_driver *driver = list->data;
1279
1280                 if (match_driver(element, driver) == FALSE)
1281                         continue;
1282
1283                 DBG("driver %p name %s", driver, driver->name);
1284
1285                 if (driver->probe(element) == 0) {
1286                         __connman_element_lock(element);
1287                         element->driver = driver;
1288                         __connman_element_unlock(element);
1289                         break;
1290                 }
1291         }
1292 }
1293
1294 static void register_element(gpointer data, gpointer user_data)
1295 {
1296         struct connman_element *element = data;
1297         const gchar *basepath;
1298         GNode *node;
1299
1300         __connman_element_lock(element);
1301
1302         if (element->parent) {
1303                 node = g_node_find(element_root, G_PRE_ORDER,
1304                                         G_TRAVERSE_ALL, element->parent);
1305                 basepath = element->parent->path;
1306         } else {
1307                 element->parent = element_root->data;
1308
1309                 node = element_root;
1310                 basepath = "/device";
1311         }
1312
1313         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1314
1315         __connman_element_unlock(element);
1316
1317         if (node == NULL) {
1318                 connman_error("Element registration for %s failed",
1319                                                         element->path);
1320                 return;
1321         }
1322
1323         DBG("element %p path %s", element, element->path);
1324
1325         g_node_append_data(node, element);
1326
1327         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1328                 element->parent->configuring = TRUE;
1329
1330 #if 0
1331                 if (__connman_element_count(NULL,
1332                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1333                         emit_state_change(connection, "connecting");
1334 #endif
1335         }
1336
1337         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1338                 struct connman_element *parent = element->parent;
1339
1340                 while (parent) {
1341                         parent->configuring = FALSE;
1342                         parent = parent->parent;
1343                 }
1344
1345                 if (__connman_element_count(NULL,
1346                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1347                         emit_state_change(connection, "online");
1348         }
1349
1350         emit_element_signal(connection, "ElementAdded", element);
1351
1352         if (started == FALSE)
1353                 return;
1354
1355         probe_element(element);
1356 }
1357
1358 /**
1359  * connman_element_register:
1360  * @element: the element to register
1361  * @parent: the parent to register the element with
1362  *
1363  * Register an element with the core. It will be register under the given
1364  * parent of if %NULL is provided under the root element.
1365  *
1366  * Returns: %0 on success
1367  */
1368 int connman_element_register(struct connman_element *element,
1369                                         struct connman_element *parent)
1370 {
1371         DBG("element %p name %s parent %p", element, element->name, parent);
1372
1373         if (element->devname == NULL)
1374                 element->devname = g_strdup(element->name);
1375
1376         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1377                 if (g_pattern_match_simple(device_filter,
1378                                                 element->devname) == FALSE) {
1379                         DBG("ignoring %s [%s] device", element->name,
1380                                                         element->devname);
1381                         return -EPERM;
1382                 }
1383         }
1384
1385         if (connman_element_ref(element) == NULL)
1386                 return -EINVAL;
1387
1388         __connman_element_lock(element);
1389
1390         if (element->name == NULL) {
1391                 element->name = g_strdup(type2string(element->type));
1392                 if (element->name == NULL) {
1393                         __connman_element_unlock(element);
1394                         return -EINVAL;
1395                 }
1396         }
1397
1398         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1399                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1400
1401         element->parent = parent;
1402
1403         __connman_element_unlock(element);
1404
1405         register_element(element, NULL);
1406
1407         return 0;
1408 }
1409
1410 static gboolean remove_element(GNode *node, gpointer user_data)
1411 {
1412         struct connman_element *element = node->data;
1413         struct connman_element *root = user_data;
1414
1415         DBG("element %p name %s", element, element->name);
1416
1417         if (element == root)
1418                 return FALSE;
1419
1420         if (node != NULL)
1421                 g_node_unlink(node);
1422
1423         if (element->driver) {
1424                 if (element->driver->remove)
1425                         element->driver->remove(element);
1426
1427                 __connman_element_lock(element);
1428                 element->driver = NULL;
1429                 __connman_element_unlock(element);
1430         }
1431
1432         if (node != NULL)
1433                 g_node_destroy(node);
1434
1435         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1436                 if (__connman_element_count(NULL,
1437                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1438                         emit_state_change(connection, "offline");
1439         }
1440
1441         emit_element_signal(connection, "ElementRemoved", element);
1442
1443         connman_element_unref(element);
1444
1445         return FALSE;
1446 }
1447
1448 void connman_element_unregister(struct connman_element *element)
1449 {
1450         GNode *node;
1451
1452         DBG("element %p name %s", element, element->name);
1453
1454         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1455
1456         if (node != NULL)
1457                 g_node_traverse(node, G_POST_ORDER,
1458                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1459 }
1460
1461 void connman_element_unregister_children(struct connman_element *element)
1462 {
1463         GNode *node;
1464
1465         DBG("element %p name %s", element, element->name);
1466
1467         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1468
1469         if (node != NULL)
1470                 g_node_traverse(node, G_POST_ORDER,
1471                                 G_TRAVERSE_ALL, -1, remove_element, element);
1472 }
1473
1474 static gboolean update_element(GNode *node, gpointer user_data)
1475 {
1476         struct connman_element *element = node->data;
1477
1478         DBG("element %p name %s", element, element->name);
1479
1480         if (element->driver && element->driver->update)
1481                 element->driver->update(element);
1482
1483         emit_element_signal(connection, "ElementUpdated", element);
1484
1485         return FALSE;
1486 }
1487
1488 void connman_element_update(struct connman_element *element)
1489 {
1490         GNode *node;
1491
1492         DBG("element %p name %s", element, element->name);
1493
1494         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1495
1496         if (node != NULL)
1497                 g_node_traverse(node, G_PRE_ORDER,
1498                                 G_TRAVERSE_ALL, -1, update_element, element);
1499 }
1500
1501 int connman_element_set_enabled(struct connman_element *element,
1502                                                         gboolean enabled)
1503 {
1504         if (element->enabled == enabled)
1505                 return 0;
1506
1507         element->enabled = enabled;
1508
1509         connman_element_update(element);
1510
1511         return 0;
1512 }
1513
1514 static enum connman_service_error convert_error(enum connman_element_error error)
1515 {
1516         switch (error) {
1517         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1518         case CONNMAN_ELEMENT_ERROR_FAILED:
1519                 break;
1520         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1521                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1522         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1523                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1524         }
1525
1526         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1527 }
1528
1529 /**
1530  * connman_element_set_error:
1531  * @element: element structure
1532  * @error: error identifier
1533  *
1534  * Set error state and specific error identifier
1535  */
1536 void connman_element_set_error(struct connman_element *element,
1537                                         enum connman_element_error error)
1538 {
1539         struct connman_service *service;
1540
1541         DBG("element %p error %d", element, error);
1542
1543         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1544                 return;
1545
1546         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1547         element->error = error;
1548
1549         if (element->driver && element->driver->change)
1550                 element->driver->change(element);
1551
1552         service = __connman_element_get_service(element);
1553         __connman_service_indicate_error(service, convert_error(error));
1554 }
1555
1556 int __connman_element_init(DBusConnection *conn, const char *device,
1557                                                         const char *nodevice)
1558 {
1559         struct connman_element *element;
1560
1561         DBG("conn %p", conn);
1562
1563         connection = dbus_connection_ref(conn);
1564         if (connection == NULL)
1565                 return -EIO;
1566
1567         device_filter = g_strdup(device);
1568
1569         element = connman_element_create("root");
1570
1571         element->path = g_strdup("/");
1572         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1573
1574         element_root = g_node_new(element);
1575
1576         __connman_notifier_init();
1577         __connman_service_init();
1578         __connman_network_init();
1579         __connman_device_init();
1580
1581         return 0;
1582 }
1583
1584 static gboolean probe_node(GNode *node, gpointer data)
1585 {
1586         struct connman_element *element = node->data;
1587
1588         DBG("element %p name %s", element, element->name);
1589
1590         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1591                 return FALSE;
1592
1593         if (element->driver)
1594                 return FALSE;
1595
1596         probe_element(element);
1597
1598         return FALSE;
1599 }
1600
1601 void __connman_element_start(void)
1602 {
1603         DBG("");
1604
1605         __connman_storage_load_global();
1606
1607         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1608                                                         probe_node, NULL);
1609
1610         started = TRUE;
1611
1612         __connman_rtnl_init();
1613         __connman_udev_init();
1614
1615         __connman_connection_init();
1616         __connman_ipv4_init();
1617         __connman_rfkill_init();
1618 }
1619
1620 void __connman_element_stop(void)
1621 {
1622         DBG("");
1623
1624         __connman_rfkill_cleanup();
1625         __connman_ipv4_cleanup();
1626         __connman_connection_cleanup();
1627
1628         __connman_storage_save_global();
1629 }
1630
1631 static gboolean free_driver(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 (element->driver) {
1638                 if (element->driver->remove)
1639                         element->driver->remove(element);
1640
1641                 __connman_element_lock(element);
1642                 element->driver = NULL;
1643                 __connman_element_unlock(element);
1644         }
1645
1646         return FALSE;
1647 }
1648
1649 static gboolean free_node(GNode *node, gpointer data)
1650 {
1651         struct connman_element *element = node->data;
1652
1653         DBG("element %p name %s", element, element->name);
1654
1655         if (g_node_depth(node) > 1)
1656                 connman_element_unregister(element);
1657
1658         return FALSE;
1659 }
1660
1661 void __connman_element_cleanup(void)
1662 {
1663         DBG("");
1664
1665         __connman_device_cleanup();
1666         __connman_network_cleanup();
1667         __connman_service_cleanup();
1668         __connman_notifier_cleanup();
1669
1670         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1671                                                         free_driver, NULL);
1672
1673         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1674                                                         free_node, NULL);
1675
1676         g_node_destroy(element_root);
1677         element_root = NULL;
1678
1679         g_free(device_filter);
1680
1681         dbus_connection_unref(connection);
1682 }