git.maemo.org Git - connman/blob - 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 struct {
  44         enum connman_property_id id;
  45         int type;
  46         const char *name;
  47         const void *value;
  48 } propid_table[] = {
  49         { CONNMAN_PROPERTY_ID_IPV4_METHOD,
  50                 DBUS_TYPE_STRING, "IPv4.Method", "dhcp" },
  51         { CONNMAN_PROPERTY_ID_IPV4_ADDRESS,
  52                 DBUS_TYPE_STRING, "IPv4.Address" },
  53         { CONNMAN_PROPERTY_ID_IPV4_NETMASK,
  54                 DBUS_TYPE_STRING, "IPv4.Netmask" },
  55         { CONNMAN_PROPERTY_ID_IPV4_GATEWAY,
  56                 DBUS_TYPE_STRING, "IPv4.Gateway" },
  57         { CONNMAN_PROPERTY_ID_IPV4_BROADCAST,
  58                 DBUS_TYPE_STRING, "IPv4.Broadcast" },
  59         { CONNMAN_PROPERTY_ID_IPV4_NAMESERVER,
  60                 DBUS_TYPE_STRING, "IPv4.Nameserver" },
  61
  62         { CONNMAN_PROPERTY_ID_WIFI_SECURITY,
  63                 DBUS_TYPE_STRING, "WiFi.Security" },
  64         { CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE,
  65                 DBUS_TYPE_STRING, "WiFi.Passphrase" },
  66
  67         { }
  68 };
  69
  70 static int propid2type(enum connman_property_id id)
  71 {
  72         int i;
  73
  74         for (i = 0; propid_table[i].name; i++) {
  75                 if (propid_table[i].id == id)
  76                         return propid_table[i].type;
  77         }
  78
  79         return DBUS_TYPE_INVALID;
  80 }
  81
  82 static const char *propid2name(enum connman_property_id id)
  83 {
  84         int i;
  85
  86         for (i = 0; propid_table[i].name; i++) {
  87                 if (propid_table[i].id == id)
  88                         return propid_table[i].name;
  89         }
  90
  91         return NULL;
  92 }
  93
  94 static const char *type2string(enum connman_element_type type)
  95 {
  96         switch (type) {
  97         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  98                 return "unknown";
  99         case CONNMAN_ELEMENT_TYPE_ROOT:
 100                 return "root";
 101         case CONNMAN_ELEMENT_TYPE_PROFILE:
 102                 return "profile";
 103         case CONNMAN_ELEMENT_TYPE_DEVICE:
 104                 return "device";
 105         case CONNMAN_ELEMENT_TYPE_NETWORK:
 106                 return "network";
 107         case CONNMAN_ELEMENT_TYPE_SERVICE:
 108                 return "service";
 109         case CONNMAN_ELEMENT_TYPE_PPP:
 110                 return "ppp";
 111         case CONNMAN_ELEMENT_TYPE_IPV4:
 112                 return "ipv4";
 113         case CONNMAN_ELEMENT_TYPE_IPV6:
 114                 return "ipv6";
 115         case CONNMAN_ELEMENT_TYPE_DHCP:
 116                 return "dhcp";
 117         case CONNMAN_ELEMENT_TYPE_BOOTP:
 118                 return "bootp";
 119         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 120                 return "zeroconf";
 121         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 122                 return "connection";
 123         case CONNMAN_ELEMENT_TYPE_VENDOR:
 124                 return "vendor";
 125         }
 126
 127         return NULL;
 128 }
 129
 130 #if 0
 131 static const char *subtype2string(enum connman_element_subtype type)
 132 {
 133         switch (type) {
 134         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
 135                 return "unknown";
 136         case CONNMAN_ELEMENT_SUBTYPE_FAKE:
 137                 return "fake";
 138         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
 139                 return "ethernet";
 140         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
 141                 return "wifi";
 142         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
 143                 return "wimax";
 144         case CONNMAN_ELEMENT_SUBTYPE_CELLULAR:
 145                 return "cellular";
 146         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
 147                 return "bluetooth";
 148         }
 149
 150         return NULL;
 151 }
 152 #endif
 153
 154 const char *__connman_element_policy2string(enum connman_element_policy policy)
 155 {
 156         switch (policy) {
 157         case CONNMAN_ELEMENT_POLICY_UNKNOWN:
 158                 return "unknown";
 159         case CONNMAN_ELEMENT_POLICY_IGNORE:
 160                 return "ignore";
 161         case CONNMAN_ELEMENT_POLICY_AUTO:
 162                 return "auto";
 163         case CONNMAN_ELEMENT_POLICY_ASK:
 164                 return "ask";
 165         }
 166
 167         return NULL;
 168 }
 169
 170 enum connman_element_policy __connman_element_string2policy(const char *policy)
 171 {
 172         if (strcasecmp(policy, "ignore") == 0)
 173                 return CONNMAN_ELEMENT_POLICY_IGNORE;
 174         else if (strcasecmp(policy, "auto") == 0)
 175                 return CONNMAN_ELEMENT_POLICY_AUTO;
 176         else if (strcasecmp(policy, "ask") == 0)
 177                 return CONNMAN_ELEMENT_POLICY_ASK;
 178         else
 179                 return CONNMAN_ELEMENT_POLICY_UNKNOWN;
 180 }
 181
 182 const char *__connman_ipv4_method2string(enum connman_ipv4_method method)
 183 {
 184         switch (method) {
 185         case CONNMAN_IPV4_METHOD_UNKNOWN:
 186                 return "unknown";
 187         case CONNMAN_IPV4_METHOD_OFF:
 188                 return "off";
 189         case CONNMAN_IPV4_METHOD_STATIC:
 190                 return "static";
 191         case CONNMAN_IPV4_METHOD_DHCP:
 192                 return "dhcp";
 193         }
 194
 195         return "unknown";
 196 }
 197
 198 enum connman_ipv4_method __connman_ipv4_string2method(const char *method)
 199 {
 200         if (strcasecmp(method, "off") == 0)
 201                 return CONNMAN_IPV4_METHOD_OFF;
 202         else if (strcasecmp(method, "static") == 0)
 203                 return CONNMAN_IPV4_METHOD_STATIC;
 204         else if (strcasecmp(method, "dhcp") == 0)
 205                 return CONNMAN_IPV4_METHOD_DHCP;
 206         else
 207                 return CONNMAN_IPV4_METHOD_UNKNOWN;
 208 }
 209
 210 #if 0
 211 static void append_property(DBusMessageIter *dict,
 212                                 struct connman_property *property)
 213 {
 214         if (property->value == NULL)
 215                 return;
 216
 217         switch (property->type) {
 218         case DBUS_TYPE_ARRAY:
 219                 connman_dbus_dict_append_array(dict, property->name,
 220                         property->subtype, &property->value, property->size);
 221                 break;
 222         case DBUS_TYPE_STRING:
 223                 connman_dbus_dict_append_variant(dict, property->name,
 224                                         property->type, &property->value);
 225                 break;
 226         default:
 227                 connman_dbus_dict_append_variant(dict, property->name,
 228                                         property->type, property->value);
 229                 break;
 230         }
 231 }
 232
 233 static void add_common_properties(struct connman_element *element,
 234                                                 DBusMessageIter *dict)
 235 {
 236         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 237         GSList *list;
 238
 239         connman_element_get_value(element,
 240                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 241         connman_element_get_value(element,
 242                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 243         connman_element_get_value(element,
 244                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 245
 246         if (element->priority > 0)
 247                 connman_dbus_dict_append_variant(dict, "Priority",
 248                                         DBUS_TYPE_UINT16, &element->priority);
 249
 250         if (address != NULL)
 251                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 252                                                 DBUS_TYPE_STRING, &address);
 253         if (netmask != NULL)
 254                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 255                                                 DBUS_TYPE_STRING, &netmask);
 256         if (gateway != NULL)
 257                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 258                                                 DBUS_TYPE_STRING, &gateway);
 259
 260         if (element->wifi.security != NULL) {
 261                 const char *passphrase = "";
 262
 263                 connman_dbus_dict_append_variant(dict, "WiFi.Security",
 264                                 DBUS_TYPE_STRING, &element->wifi.security);
 265
 266                 if (element->wifi.passphrase != NULL)
 267                         passphrase = element->wifi.passphrase;
 268
 269                 connman_dbus_dict_append_variant(dict, "WiFi.Passphrase",
 270                                 DBUS_TYPE_STRING, &passphrase);
 271         }
 272
 273         __connman_element_lock(element);
 274
 275         for (list = element->properties; list; list = list->next) {
 276                 struct connman_property *property = list->data;
 277
 278                 append_property(dict, property);
 279         }
 280
 281         __connman_element_unlock(element);
 282 }
 283
 284 static void set_common_property(struct connman_element *element,
 285                                 const char *name, DBusMessageIter *value)
 286 {
 287         GSList *list;
 288
 289         if (g_str_equal(name, "Priority") == TRUE) {
 290                 dbus_message_iter_get_basic(value, &element->priority);
 291                 return;
 292         }
 293
 294         __connman_element_lock(element);
 295
 296         for (list = element->properties; list; list = list->next) {
 297                 struct connman_property *property = list->data;
 298                 const char *str;
 299
 300                 if (g_str_equal(property->name, name) == FALSE)
 301                         continue;
 302
 303                 if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)
 304                         continue;
 305
 306                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 307
 308                 if (property->type == DBUS_TYPE_STRING) {
 309                         dbus_message_iter_get_basic(value, &str);
 310                         g_free(property->value);
 311                         property->value = g_strdup(str);
 312                 } else
 313                         property->value = NULL;
 314         }
 315
 316         __connman_element_unlock(element);
 317 }
 318 #endif
 319
 320 static void emit_element_signal(DBusConnection *conn, const char *member,
 321                                         struct connman_element *element)
 322 {
 323         DBusMessage *signal;
 324
 325         if (__connman_debug_enabled() == FALSE)
 326                 return;
 327
 328         DBG("conn %p member %s", conn, member);
 329
 330         if (element == NULL)
 331                 return;
 332
 333         signal = dbus_message_new_signal(element->path,
 334                                         CONNMAN_DEBUG_INTERFACE, member);
 335         if (signal == NULL)
 336                 return;
 337
 338         g_dbus_send_message(conn, signal);
 339 }
 340
 341 struct foreach_data {
 342         enum connman_element_type type;
 343         element_cb_t callback;
 344         gpointer user_data;
 345 };
 346
 347 static gboolean foreach_callback(GNode *node, gpointer user_data)
 348 {
 349         struct connman_element *element = node->data;
 350         struct foreach_data *data = user_data;
 351
 352         DBG("element %p name %s", element, element->name);
 353
 354         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 355                 return FALSE;
 356
 357         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 358                                         data->type != element->type)
 359                 return FALSE;
 360
 361         if (data->callback)
 362                 data->callback(element, data->user_data);
 363
 364         return FALSE;
 365 }
 366
 367 void __connman_element_foreach(struct connman_element *element,
 368                                 enum connman_element_type type,
 369                                 element_cb_t callback, gpointer user_data)
 370 {
 371         struct foreach_data data = { type, callback, user_data };
 372         GNode *node;
 373
 374         DBG("");
 375
 376         if (element != NULL) {
 377                 node = g_node_find(element_root, G_PRE_ORDER,
 378                                                 G_TRAVERSE_ALL, element);
 379                 if (node == NULL)
 380                         return;
 381         } else
 382                 node = element_root;
 383
 384         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 385                                                 foreach_callback, &data);
 386 }
 387
 388 struct append_filter {
 389         enum connman_element_type type;
 390         DBusMessageIter *iter;
 391 };
 392
 393 static gboolean append_path(GNode *node, gpointer user_data)
 394 {
 395         struct connman_element *element = node->data;
 396         struct append_filter *filter = user_data;
 397
 398         DBG("element %p name %s", element, element->name);
 399
 400         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 401                 return FALSE;
 402
 403         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 404                                         filter->type != element->type)
 405                 return FALSE;
 406
 407         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 408                         __connman_device_has_driver(element->device) == FALSE)
 409                 return FALSE;
 410
 411         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 412                         __connman_network_has_driver(element->network) == FALSE)
 413                 return FALSE;
 414
 415         dbus_message_iter_append_basic(filter->iter,
 416                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 417
 418         return FALSE;
 419 }
 420
 421 void __connman_element_list(struct connman_element *element,
 422                                         enum connman_element_type type,
 423                                                         DBusMessageIter *iter)
 424 {
 425         struct append_filter filter = { type, iter };
 426         GNode *node;
 427
 428         DBG("");
 429
 430         if (element != NULL) {
 431                 node = g_node_find(element_root, G_PRE_ORDER,
 432                                                 G_TRAVERSE_ALL, element);
 433                 if (node == NULL)
 434                         return;
 435         } else
 436                 node = element_root;
 437
 438         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 439                                                 append_path, &filter);
 440 }
 441
 442 struct count_data {
 443         enum connman_element_type type;
 444         int count;
 445 };
 446
 447 static gboolean count_element(GNode *node, gpointer user_data)
 448 {
 449         struct connman_element *element = node->data;
 450         struct count_data *data = user_data;
 451
 452         DBG("element %p name %s", element, element->name);
 453
 454         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 455                 return FALSE;
 456
 457         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 458                                         data->type != element->type)
 459                 return FALSE;
 460
 461         data->count++;
 462
 463         return FALSE;
 464 }
 465
 466 int __connman_element_count(struct connman_element *element,
 467                                         enum connman_element_type type)
 468 {
 469         struct count_data data = { type, 0 };
 470         GNode *node;
 471
 472         DBG("");
 473
 474         if (element != NULL) {
 475                 node = g_node_find(element_root, G_PRE_ORDER,
 476                                                 G_TRAVERSE_ALL, element);
 477                 if (node == NULL)
 478                         return 0;
 479         } else
 480                 node = element_root;
 481
 482         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 483                                                 count_element, &data);
 484
 485         return data.count;
 486 }
 487
 488 static gint compare_priority(gconstpointer a, gconstpointer b)
 489 {
 490         const struct connman_driver *driver1 = a;
 491         const struct connman_driver *driver2 = b;
 492
 493         return driver2->priority - driver1->priority;
 494 }
 495
 496 static gboolean match_driver(struct connman_element *element,
 497                                         struct connman_driver *driver)
 498 {
 499         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 500                 return FALSE;
 501
 502         if (element->type != driver->type &&
 503                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 504                 return FALSE;
 505
 506         if (element->subtype == driver->subtype ||
 507                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 508                 return TRUE;
 509
 510         return FALSE;
 511 }
 512
 513 static gboolean probe_driver(GNode *node, gpointer data)
 514 {
 515         struct connman_element *element = node->data;
 516         struct connman_driver *driver = data;
 517
 518         DBG("element %p name %s", element, element->name);
 519
 520         if (!element->driver && match_driver(element, driver) == TRUE) {
 521                 if (driver->probe(element) < 0)
 522                         return FALSE;
 523
 524                 __connman_element_lock(element);
 525                 element->driver = driver;
 526                 __connman_element_unlock(element);
 527         }
 528
 529         return FALSE;
 530 }
 531
 532 void __connman_driver_rescan(struct connman_driver *driver)
 533 {
 534         DBG("driver %p name %s", driver, driver->name);
 535
 536         if (!driver->probe)
 537                 return;
 538
 539         if (element_root != NULL)
 540                 g_node_traverse(element_root, G_PRE_ORDER,
 541                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 542 }
 543
 544 /**
 545  * connman_driver_register:
 546  * @driver: driver definition
 547  *
 548  * Register a new driver
 549  *
 550  * Returns: %0 on success
 551  */
 552 int connman_driver_register(struct connman_driver *driver)
 553 {
 554         DBG("driver %p name %s", driver, driver->name);
 555
 556         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 557                 return -EINVAL;
 558
 559         if (!driver->probe)
 560                 return -EINVAL;
 561
 562         driver_list = g_slist_insert_sorted(driver_list, driver,
 563                                                         compare_priority);
 564
 565         if (started == FALSE)
 566                 return 0;
 567
 568         if (element_root != NULL)
 569                 g_node_traverse(element_root, G_PRE_ORDER,
 570                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 571
 572         return 0;
 573 }
 574
 575 static gboolean remove_driver(GNode *node, gpointer data)
 576 {
 577         struct connman_element *element = node->data;
 578         struct connman_driver *driver = data;
 579
 580         DBG("element %p name %s", element, element->name);
 581
 582         if (element->driver == driver) {
 583                 if (driver->remove)
 584                         driver->remove(element);
 585
 586                 __connman_element_lock(element);
 587                 element->driver = NULL;
 588                 __connman_element_unlock(element);
 589         }
 590
 591         return FALSE;
 592 }
 593
 594 /**
 595  * connman_driver_unregister:
 596  * @driver: driver definition
 597  *
 598  * Remove a previously registered driver
 599  */
 600 void connman_driver_unregister(struct connman_driver *driver)
 601 {
 602         DBG("driver %p name %s", driver, driver->name);
 603
 604         driver_list = g_slist_remove(driver_list, driver);
 605
 606         if (element_root != NULL)
 607                 g_node_traverse(element_root, G_POST_ORDER,
 608                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 609 }
 610
 611 /**
 612  * connman_element_create:
 613  * @name: element name
 614  *
 615  * Allocate a new element and assign the given #name to it. If the name
 616  * is #NULL, it will be later on created based on the element type.
 617  *
 618  * Returns: a newly-allocated #connman_element structure
 619  */
 620 struct connman_element *connman_element_create(const char *name)
 621 {
 622         struct connman_element *element;
 623
 624         element = g_try_new0(struct connman_element, 1);
 625         if (element == NULL)
 626                 return NULL;
 627
 628         DBG("element %p", element);
 629
 630         element->refcount = 1;
 631
 632         element->name    = g_strdup(name);
 633         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 634         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 635         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 636         element->policy  = CONNMAN_ELEMENT_POLICY_AUTO;
 637         element->index   = -1;
 638         element->enabled = FALSE;
 639
 640         return element;
 641 }
 642
 643 struct connman_element *connman_element_ref(struct connman_element *element)
 644 {
 645         DBG("element %p name %s refcount %d", element, element->name,
 646                                 g_atomic_int_get(&element->refcount) + 1);
 647
 648         g_atomic_int_inc(&element->refcount);
 649
 650         return element;
 651 }
 652
 653 static void free_properties(struct connman_element *element)
 654 {
 655         GSList *list;
 656
 657         DBG("element %p name %s", element, element->name);
 658
 659         __connman_element_lock(element);
 660
 661         for (list = element->properties; list; list = list->next) {
 662                 struct connman_property *property = list->data;
 663
 664                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 665                         g_free(property->value);
 666
 667                 g_free(property->name);
 668                 g_free(property);
 669         }
 670
 671         g_slist_free(element->properties);
 672
 673         element->properties = NULL;
 674
 675         __connman_element_unlock(element);
 676 }
 677
 678 void connman_element_unref(struct connman_element *element)
 679 {
 680         DBG("element %p name %s refcount %d", element, element->name,
 681                                 g_atomic_int_get(&element->refcount) - 1);
 682
 683         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 684                 if (element->destruct)
 685                         element->destruct(element);
 686                 free_properties(element);
 687                 g_free(element->ipv4.address);
 688                 g_free(element->ipv4.netmask);
 689                 g_free(element->ipv4.gateway);
 690                 g_free(element->ipv4.network);
 691                 g_free(element->ipv4.broadcast);
 692                 g_free(element->ipv4.nameserver);
 693                 g_free(element->devname);
 694                 g_free(element->devpath);
 695                 g_free(element->path);
 696                 g_free(element->name);
 697                 g_free(element);
 698         }
 699 }
 700
 701 int connman_element_add_static_property(struct connman_element *element,
 702                                 const char *name, int type, const void *value)
 703 {
 704         struct connman_property *property;
 705
 706         DBG("element %p name %s", element, element->name);
 707
 708         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 709                 return -EINVAL;
 710
 711         property = g_try_new0(struct connman_property, 1);
 712         if (property == NULL)
 713                 return -ENOMEM;
 714
 715         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 716         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 717         property->name  = g_strdup(name);
 718         property->type  = type;
 719
 720         DBG("name %s type %d value %p", name, type, value);
 721
 722         switch (type) {
 723         case DBUS_TYPE_STRING:
 724                 property->value = g_strdup(*((const char **) value));
 725                 break;
 726         case DBUS_TYPE_BYTE:
 727                 property->value = g_try_malloc(1);
 728                 if (property->value != NULL)
 729                         memcpy(property->value, value, 1);
 730                 break;
 731         }
 732
 733         __connman_element_lock(element);
 734         element->properties = g_slist_append(element->properties, property);
 735         __connman_element_unlock(element);
 736
 737         return 0;
 738 }
 739
 740 int connman_element_set_static_property(struct connman_element *element,
 741                                 const char *name, int type, const void *value)
 742 {
 743         GSList *list;
 744
 745         DBG("element %p name %s", element, element->name);
 746
 747         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 748                 return -EINVAL;
 749
 750         __connman_element_lock(element);
 751
 752         for (list = element->properties; list; list = list->next) {
 753                 struct connman_property *property = list->data;
 754
 755                 if (g_str_equal(property->name, name) == FALSE)
 756                         continue;
 757
 758                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
 759                         continue;
 760
 761                 property->type = type;
 762                 g_free(property->value);
 763
 764                 switch (type) {
 765                 case DBUS_TYPE_STRING:
 766                         property->value = g_strdup(*((const char **) value));
 767                         break;
 768                 case DBUS_TYPE_BYTE:
 769                         property->value = g_try_malloc(1);
 770                         if (property->value != NULL)
 771                                 memcpy(property->value, value, 1);
 772                         break;
 773                 }
 774         }
 775
 776         __connman_element_unlock(element);
 777
 778         return 0;
 779 }
 780
 781 int connman_element_add_static_array_property(struct connman_element *element,
 782                         const char *name, int type, const void *value, int len)
 783 {
 784         struct connman_property *property;
 785
 786         DBG("element %p name %s", element, element->name);
 787
 788         if (type != DBUS_TYPE_BYTE)
 789                 return -EINVAL;
 790
 791         property = g_try_new0(struct connman_property, 1);
 792         if (property == NULL)
 793                 return -ENOMEM;
 794
 795         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
 796         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 797         property->name    = g_strdup(name);
 798         property->type    = DBUS_TYPE_ARRAY;
 799         property->subtype = type;
 800
 801         DBG("name %s type %d value %p", name, type, value);
 802
 803         switch (type) {
 804         case DBUS_TYPE_BYTE:
 805                 property->value = g_try_malloc(len);
 806                 if (property->value != NULL) {
 807                         memcpy(property->value,
 808                                 *((const unsigned char **) value), len);
 809                         property->size = len;
 810                 }
 811                 break;
 812         }
 813
 814         __connman_element_lock(element);
 815         element->properties = g_slist_append(element->properties, property);
 816         __connman_element_unlock(element);
 817
 818         return 0;
 819 }
 820
 821 static void *get_reference_value(struct connman_element *element,
 822                                                 enum connman_property_id id)
 823 {
 824         GSList *list;
 825
 826         DBG("element %p name %s", element, element->name);
 827
 828         for (list = element->properties; list; list = list->next) {
 829                 struct connman_property *property = list->data;
 830
 831                 if (property->id != id)
 832                         continue;
 833
 834                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 835                         return property->value;
 836         }
 837
 838         if (element->parent == NULL)
 839                 return NULL;
 840
 841         return get_reference_value(element->parent, id);
 842 }
 843
 844 static void set_reference_properties(struct connman_element *element)
 845 {
 846         GSList *list;
 847
 848         DBG("element %p name %s", element, element->name);
 849
 850         for (list = element->properties; list; list = list->next) {
 851                 struct connman_property *property = list->data;
 852
 853                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 854                         continue;
 855
 856                 property->value = get_reference_value(element->parent,
 857                                                                 property->id);
 858         }
 859 }
 860
 861 static struct connman_property *create_property(struct connman_element *element,
 862                                                 enum connman_property_id id)
 863 {
 864         struct connman_property *property;
 865         GSList *list;
 866
 867         DBG("element %p name %s", element, element->name);
 868
 869         __connman_element_lock(element);
 870
 871         for (list = element->properties; list; list = list->next) {
 872                 property = list->data;
 873
 874                 if (property->id == id)
 875                         goto unlock;
 876         }
 877
 878         property = g_try_new0(struct connman_property, 1);
 879         if (property == NULL)
 880                 goto unlock;
 881
 882         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
 883         property->id    = id;
 884         property->name  = g_strdup(propid2name(id));
 885         property->type  = propid2type(id);
 886
 887         if (property->name == NULL) {
 888                 g_free(property);
 889                 property = NULL;
 890                 goto unlock;
 891         }
 892
 893         element->properties = g_slist_append(element->properties, property);
 894
 895 unlock:
 896         __connman_element_unlock(element);
 897
 898         return property;
 899 }
 900
 901 static void create_default_properties(struct connman_element *element)
 902 {
 903         struct connman_property *property;
 904         int i;
 905
 906         DBG("element %p name %s", element, element->name);
 907
 908         for (i = 0; propid_table[i].name; i++) {
 909                 DBG("property %s", propid_table[i].name);
 910
 911                 property = create_property(element, propid_table[i].id);
 912
 913                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 914
 915                 if (propid_table[i].type != DBUS_TYPE_STRING)
 916                         continue;
 917
 918                 if (propid_table[i].value)
 919                         property->value = g_strdup(propid_table[i].value);
 920                 else
 921                         property->value = g_strdup("");
 922         }
 923 }
 924
 925 static int define_properties_valist(struct connman_element *element,
 926                                                                 va_list args)
 927 {
 928         enum connman_property_id id;
 929
 930         DBG("element %p name %s", element, element->name);
 931
 932         id = va_arg(args, enum connman_property_id);
 933
 934         while (id != CONNMAN_PROPERTY_ID_INVALID) {
 935
 936                 DBG("property %d", id);
 937
 938                 create_property(element, id);
 939
 940                 id = va_arg(args, enum connman_property_id);
 941         }
 942
 943         return 0;
 944 }
 945
 946 /**
 947  * connman_element_define_properties:
 948  * @element: an element
 949  * @varargs: list of property identifiers
 950  *
 951  * Define the valid properties for an element.
 952  *
 953  * Returns: %0 on success
 954  */
 955 int connman_element_define_properties(struct connman_element *element, ...)
 956 {
 957         va_list args;
 958         int err;
 959
 960         DBG("element %p name %s", element, element->name);
 961
 962         va_start(args, element);
 963
 964         err = define_properties_valist(element, args);
 965
 966         va_end(args);
 967
 968         return err;
 969 }
 970
 971 int connman_element_create_property(struct connman_element *element,
 972                                                 const char *name, int type)
 973 {
 974         return -EIO;
 975 }
 976
 977 int connman_element_set_property(struct connman_element *element,
 978                                 enum connman_property_id id, const void *value)
 979 {
 980         switch (id) {
 981         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 982                 __connman_element_lock(element);
 983                 g_free(element->ipv4.address);
 984                 element->ipv4.address = g_strdup(*((const char **) value));
 985                 __connman_element_unlock(element);
 986                 break;
 987         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 988                 __connman_element_lock(element);
 989                 g_free(element->ipv4.netmask);
 990                 element->ipv4.netmask = g_strdup(*((const char **) value));
 991                 __connman_element_unlock(element);
 992                 break;
 993         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 994                 __connman_element_lock(element);
 995                 g_free(element->ipv4.gateway);
 996                 element->ipv4.gateway = g_strdup(*((const char **) value));
 997                 __connman_element_unlock(element);
 998                 break;
 999         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1000                 __connman_element_lock(element);
1001                 g_free(element->ipv4.broadcast);
1002                 element->ipv4.broadcast = g_strdup(*((const char **) value));
1003                 __connman_element_unlock(element);
1004                 break;
1005         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1006                 __connman_element_lock(element);
1007                 g_free(element->ipv4.nameserver);
1008                 element->ipv4.nameserver = g_strdup(*((const char **) value));
1009                 __connman_element_unlock(element);
1010                 break;
1011         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1012                 __connman_element_lock(element);
1013                 g_free(element->wifi.security);
1014                 element->wifi.security = g_strdup(*((const char **) value));
1015                 __connman_element_unlock(element);
1016                 break;
1017         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1018                 __connman_element_lock(element);
1019                 g_free(element->wifi.passphrase);
1020                 element->wifi.passphrase = g_strdup(*((const char **) value));
1021                 __connman_element_unlock(element);
1022                 break;
1023         default:
1024                 return -EINVAL;
1025         }
1026
1027         return 0;
1028 }
1029
1030 int connman_element_get_value(struct connman_element *element,
1031                                 enum connman_property_id id, void *value)
1032 {
1033         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1034                 return -EINVAL;
1035
1036         switch (id) {
1037         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1038                 if (element->ipv4.address == NULL)
1039                         return connman_element_get_value(element->parent,
1040                                                                 id, value);
1041                 __connman_element_lock(element);
1042                 *((char **) value) = element->ipv4.address;
1043                 __connman_element_unlock(element);
1044                 break;
1045         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1046                 if (element->ipv4.netmask == NULL)
1047                         return connman_element_get_value(element->parent,
1048                                                                 id, value);
1049                 __connman_element_lock(element);
1050                 *((char **) value) = element->ipv4.netmask;
1051                 __connman_element_unlock(element);
1052                 break;
1053         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1054                 if (element->ipv4.gateway == NULL)
1055                         return connman_element_get_value(element->parent,
1056                                                                 id, value);
1057                 __connman_element_lock(element);
1058                 *((char **) value) = element->ipv4.gateway;
1059                 __connman_element_unlock(element);
1060                 break;
1061         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1062                 if (element->ipv4.broadcast == NULL)
1063                         return connman_element_get_value(element->parent,
1064                                                                 id, value);
1065                 __connman_element_lock(element);
1066                 *((char **) value) = element->ipv4.broadcast;
1067                 __connman_element_unlock(element);
1068                 break;
1069         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1070                 if (element->ipv4.nameserver == NULL)
1071                         return connman_element_get_value(element->parent,
1072                                                                 id, value);
1073                 __connman_element_lock(element);
1074                 *((char **) value) = element->ipv4.nameserver;
1075                 __connman_element_unlock(element);
1076                 break;
1077         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1078                 if (element->wifi.security == NULL)
1079                         return connman_element_get_value(element->parent,
1080                                                                 id, value);
1081                 __connman_element_lock(element);
1082                 *((char **) value) = element->wifi.security;
1083                 __connman_element_unlock(element);
1084                 break;
1085         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1086                 if (element->wifi.passphrase == NULL)
1087                         return connman_element_get_value(element->parent,
1088                                                                 id, value);
1089                 __connman_element_lock(element);
1090                 *((char **) value) = element->wifi.passphrase;
1091                 __connman_element_unlock(element);
1092                 break;
1093         default:
1094                 return -EINVAL;
1095         }
1096
1097         return 0;
1098 }
1099
1100 gboolean connman_element_get_static_property(struct connman_element *element,
1101                                                 const char *name, void *value)
1102 {
1103         GSList *list;
1104         gboolean found = FALSE;
1105
1106         DBG("element %p name %s", element, element->name);
1107
1108         __connman_element_lock(element);
1109
1110         for (list = element->properties; list; list = list->next) {
1111                 struct connman_property *property = list->data;
1112
1113                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1114                         continue;
1115
1116                 if (g_str_equal(property->name, name) == TRUE) {
1117                         switch (property->type) {
1118                         case DBUS_TYPE_STRING:
1119                                 *((char **) value) = property->value;
1120                                 found = TRUE;
1121                                 break;
1122                         }
1123                         break;
1124                 }
1125         }
1126
1127         __connman_element_unlock(element);
1128
1129         return found;
1130 }
1131
1132 gboolean connman_element_get_static_array_property(struct connman_element *element,
1133                                         const char *name, void *value, int *len)
1134 {
1135         GSList *list;
1136         gboolean found = FALSE;
1137
1138         DBG("element %p name %s", element, element->name);
1139
1140         __connman_element_lock(element);
1141
1142         for (list = element->properties; list; list = list->next) {
1143                 struct connman_property *property = list->data;
1144
1145                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1146                         continue;
1147
1148                 if (g_str_equal(property->name, name) == TRUE) {
1149                         *((char **) value) = property->value;
1150                         *len = property->size;
1151                         found = TRUE;
1152                         break;
1153                 }
1154         }
1155
1156         __connman_element_unlock(element);
1157
1158         return found;
1159 }
1160
1161 gboolean connman_element_match_static_property(struct connman_element *element,
1162                                         const char *name, const void *value)
1163 {
1164         GSList *list;
1165         gboolean result = FALSE;
1166
1167         DBG("element %p name %s", element, element->name);
1168
1169         __connman_element_lock(element);
1170
1171         for (list = element->properties; list; list = list->next) {
1172                 struct connman_property *property = list->data;
1173
1174                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1175                         continue;
1176
1177                 if (g_str_equal(property->name, name) == FALSE)
1178                         continue;
1179
1180                 if (property->type == DBUS_TYPE_STRING)
1181                         result = g_str_equal(property->value,
1182                                                 *((const char **) value));
1183
1184                 if (result == TRUE)
1185                         break;
1186         }
1187
1188         __connman_element_unlock(element);
1189
1190         return result;
1191 }
1192
1193 static void append_connections(DBusMessageIter *entry)
1194 {
1195         DBusMessageIter value, iter;
1196         const char *key = "Connections";
1197
1198         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1199
1200         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1201                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1202                                                                 &value);
1203
1204         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1205                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1206         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1207         dbus_message_iter_close_container(&value, &iter);
1208
1209         dbus_message_iter_close_container(entry, &value);
1210 }
1211
1212 static void emit_connections_signal(DBusConnection *conn)
1213 {
1214         DBusMessage *signal;
1215         DBusMessageIter entry;
1216
1217         DBG("conn %p", conn);
1218
1219         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1220                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1221         if (signal == NULL)
1222                 return;
1223
1224         dbus_message_iter_init_append(signal, &entry);
1225
1226         append_connections(&entry);
1227
1228         g_dbus_send_message(conn, signal);
1229 }
1230
1231 static void append_state(DBusMessageIter *entry, const char *state)
1232 {
1233         DBusMessageIter value;
1234         const char *key = "State";
1235
1236         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1237
1238         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1239                                         DBUS_TYPE_STRING_AS_STRING, &value);
1240         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1241         dbus_message_iter_close_container(entry, &value);
1242 }
1243
1244 static void emit_state_change(DBusConnection *conn, const char *state)
1245 {
1246         DBusMessage *signal;
1247         DBusMessageIter entry;
1248
1249         DBG("conn %p", conn);
1250
1251         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1252                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1253         if (signal == NULL)
1254                 return;
1255
1256         dbus_message_iter_init_append(signal, &entry);
1257
1258         append_state(&entry, state);
1259
1260         g_dbus_send_message(conn, signal);
1261 }
1262
1263 static void set_signal_strength(struct connman_element *connection)
1264 {
1265         struct connman_element *element = connection;
1266
1267         while (element != NULL) {
1268                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1269                         connection->strength = element->strength;
1270                         break;
1271                 }
1272
1273                 element = element->parent;
1274         }
1275 }
1276
1277 static void probe_element(struct connman_element *element)
1278 {
1279         GSList *list;
1280
1281         DBG("element %p name %s", element, element->name);
1282
1283         for (list = driver_list; list; list = list->next) {
1284                 struct connman_driver *driver = list->data;
1285
1286                 if (match_driver(element, driver) == FALSE)
1287                         continue;
1288
1289                 DBG("driver %p name %s", driver, driver->name);
1290
1291                 if (driver->probe(element) == 0) {
1292                         __connman_element_lock(element);
1293                         element->driver = driver;
1294                         __connman_element_unlock(element);
1295                         break;
1296                 }
1297         }
1298 }
1299
1300 static void register_element(gpointer data, gpointer user_data)
1301 {
1302         struct connman_element *element = data;
1303         const gchar *basepath;
1304         GNode *node;
1305
1306         __connman_element_lock(element);
1307
1308         if (element->parent) {
1309                 node = g_node_find(element_root, G_PRE_ORDER,
1310                                         G_TRAVERSE_ALL, element->parent);
1311                 basepath = element->parent->path;
1312
1313                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
1314                         element->subtype = element->parent->subtype;
1315         } else {
1316                 element->parent = element_root->data;
1317
1318                 node = element_root;
1319                 basepath = "";
1320         }
1321
1322         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1323
1324         set_reference_properties(element);
1325
1326         __connman_element_unlock(element);
1327
1328         DBG("element %p path %s", element, element->path);
1329
1330         g_node_append_data(node, element);
1331
1332         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1333                 set_signal_strength(element);
1334                 emit_connections_signal(connection);
1335                 emit_state_change(connection, "online");
1336         }
1337
1338         emit_element_signal(connection, "ElementAdded", element);
1339
1340         if (started == FALSE)
1341                 return;
1342
1343         probe_element(element);
1344 }
1345
1346 /**
1347  * connman_element_register:
1348  * @element: the element to register
1349  * @parent: the parent to register the element with
1350  *
1351  * Register an element with the core. It will be register under the given
1352  * parent of if %NULL is provided under the root element.
1353  *
1354  * Returns: %0 on success
1355  */
1356 int connman_element_register(struct connman_element *element,
1357                                         struct connman_element *parent)
1358 {
1359         DBG("element %p name %s parent %p", element, element->name, parent);
1360
1361         if (element->devname == NULL)
1362                 element->devname = g_strdup(element->name);
1363
1364         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1365                 if (g_pattern_match_simple(device_filter,
1366                                                 element->devname) == FALSE) {
1367                         DBG("ignoring %s [%s] device", element->name,
1368                                                         element->devname);
1369                         return -EPERM;
1370                 }
1371         }
1372
1373         if (connman_element_ref(element) == NULL)
1374                 return -EINVAL;
1375
1376         __connman_element_lock(element);
1377
1378         if (element->name == NULL) {
1379                 element->name = g_strdup(type2string(element->type));
1380                 if (element->name == NULL) {
1381                         __connman_element_unlock(element);
1382                         return -EINVAL;
1383                 }
1384         }
1385
1386         element->parent = parent;
1387
1388         __connman_element_unlock(element);
1389
1390         register_element(element, NULL);
1391
1392         return 0;
1393 }
1394
1395 static gboolean remove_element(GNode *node, gpointer user_data)
1396 {
1397         struct connman_element *element = node->data;
1398         struct connman_element *root = user_data;
1399
1400         DBG("element %p name %s", element, element->name);
1401
1402         if (element == root)
1403                 return FALSE;
1404
1405         if (node != NULL)
1406                 g_node_unlink(node);
1407
1408         if (element->driver) {
1409                 if (element->driver->remove)
1410                         element->driver->remove(element);
1411
1412                 __connman_element_lock(element);
1413                 element->driver = NULL;
1414                 __connman_element_unlock(element);
1415         }
1416
1417         if (node != NULL)
1418                 g_node_destroy(node);
1419
1420         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1421                 if (__connman_element_count(NULL,
1422                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1423                         emit_state_change(connection, "offline");
1424                 emit_connections_signal(connection);
1425         }
1426
1427         emit_element_signal(connection, "ElementRemoved", element);
1428
1429         connman_element_unref(element);
1430
1431         return FALSE;
1432 }
1433
1434 void connman_element_unregister(struct connman_element *element)
1435 {
1436         GNode *node;
1437
1438         DBG("element %p name %s", element, element->name);
1439
1440         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1441
1442         if (node != NULL)
1443                 g_node_traverse(node, G_POST_ORDER,
1444                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1445 }
1446
1447 void connman_element_unregister_children(struct connman_element *element)
1448 {
1449         GNode *node;
1450
1451         DBG("element %p name %s", element, element->name);
1452
1453         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1454
1455         if (node != NULL)
1456                 g_node_traverse(node, G_POST_ORDER,
1457                                 G_TRAVERSE_ALL, -1, remove_element, element);
1458 }
1459
1460 static gboolean update_element(GNode *node, gpointer user_data)
1461 {
1462         struct connman_element *element = node->data;
1463         struct connman_element *root = user_data;
1464
1465         DBG("element %p name %s", element, element->name);
1466
1467         if (element->driver && element->driver->update)
1468                 element->driver->update(element);
1469
1470         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1471                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1472                 if (element->strength != root->strength)
1473                         element->strength = root->strength;
1474         }
1475
1476         emit_element_signal(connection, "ElementUpdated", element);
1477
1478         return FALSE;
1479 }
1480
1481 void connman_element_update(struct connman_element *element)
1482 {
1483         GNode *node;
1484
1485         DBG("element %p name %s", element, element->name);
1486
1487         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1488
1489         if (node != NULL)
1490                 g_node_traverse(node, G_PRE_ORDER,
1491                                 G_TRAVERSE_ALL, -1, update_element, element);
1492 }
1493
1494 int connman_element_set_enabled(struct connman_element *element,
1495                                                         gboolean enabled)
1496 {
1497         if (element->enabled == enabled)
1498                 return 0;
1499
1500         element->enabled = enabled;
1501
1502         return 0;
1503 }
1504
1505 int __connman_element_init(DBusConnection *conn, const char *device)
1506 {
1507         struct connman_element *element;
1508
1509         DBG("conn %p", conn);
1510
1511         connection = dbus_connection_ref(conn);
1512         if (connection == NULL)
1513                 return -EIO;
1514
1515         device_filter = g_strdup(device);
1516
1517         element = connman_element_create("root");
1518
1519         element->path = g_strdup("/");
1520         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1521
1522         create_default_properties(element);
1523
1524         element_root = g_node_new(element);
1525
1526         __connman_network_init();
1527         __connman_device_init();
1528
1529         return 0;
1530 }
1531
1532 static gboolean probe_node(GNode *node, gpointer data)
1533 {
1534         struct connman_element *element = node->data;
1535
1536         DBG("element %p name %s", element, element->name);
1537
1538         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1539                 return FALSE;
1540
1541         if (element->driver)
1542                 return FALSE;
1543
1544         probe_element(element);
1545
1546         return FALSE;
1547 }
1548
1549 void __connman_element_start(void)
1550 {
1551         DBG("");
1552
1553         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1554                                                         probe_node, NULL);
1555
1556         started = TRUE;
1557
1558         __connman_connection_init();
1559         __connman_detect_init();
1560 }
1561
1562 void __connman_element_stop(void)
1563 {
1564         DBG("");
1565
1566         __connman_detect_cleanup();
1567         __connman_connection_cleanup();
1568 }
1569
1570 static gboolean free_driver(GNode *node, gpointer data)
1571 {
1572         struct connman_element *element = node->data;
1573
1574         DBG("element %p name %s", element, element->name);
1575
1576         if (element->driver) {
1577                 if (element->driver->remove)
1578                         element->driver->remove(element);
1579
1580                 __connman_element_lock(element);
1581                 element->driver = NULL;
1582                 __connman_element_unlock(element);
1583         }
1584
1585         return FALSE;
1586 }
1587
1588 static gboolean free_node(GNode *node, gpointer data)
1589 {
1590         struct connman_element *element = node->data;
1591
1592         DBG("element %p name %s", element, element->name);
1593
1594         if (g_node_depth(node) > 1)
1595                 connman_element_unregister(element);
1596
1597         return FALSE;
1598 }
1599
1600 void __connman_element_cleanup(void)
1601 {
1602         DBG("");
1603
1604         __connman_device_cleanup();
1605         __connman_network_cleanup();
1606
1607         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1608                                                         free_driver, NULL);
1609
1610         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1611                                                         free_node, NULL);
1612
1613         g_node_destroy(element_root);
1614         element_root = NULL;
1615
1616         g_free(device_filter);
1617
1618         dbus_connection_unref(connection);
1619 }