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 void enable_element(struct connman_element *element)
 514 {
 515         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 516                 return;
 517
 518         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 519                 return;
 520
 521         if (element->driver && element->driver->enable) {
 522                 if (element->driver->enable(element) == 0)
 523                         element->enabled = TRUE;
 524         }
 525 }
 526
 527 static gboolean probe_driver(GNode *node, gpointer data)
 528 {
 529         struct connman_element *element = node->data;
 530         struct connman_driver *driver = data;
 531
 532         DBG("element %p name %s", element, element->name);
 533
 534         if (!element->driver && match_driver(element, driver) == TRUE) {
 535                 if (driver->probe(element) < 0)
 536                         return FALSE;
 537
 538                 __connman_element_lock(element);
 539                 element->driver = driver;
 540                 __connman_element_unlock(element);
 541
 542                 enable_element(element);
 543         }
 544
 545         return FALSE;
 546 }
 547
 548 void __connman_driver_rescan(struct connman_driver *driver)
 549 {
 550         DBG("driver %p name %s", driver, driver->name);
 551
 552         if (!driver->probe)
 553                 return;
 554
 555         if (element_root != NULL)
 556                 g_node_traverse(element_root, G_PRE_ORDER,
 557                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 558 }
 559
 560 /**
 561  * connman_driver_register:
 562  * @driver: driver definition
 563  *
 564  * Register a new driver
 565  *
 566  * Returns: %0 on success
 567  */
 568 int connman_driver_register(struct connman_driver *driver)
 569 {
 570         DBG("driver %p name %s", driver, driver->name);
 571
 572         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 573                 return -EINVAL;
 574
 575         if (!driver->probe)
 576                 return -EINVAL;
 577
 578         driver_list = g_slist_insert_sorted(driver_list, driver,
 579                                                         compare_priority);
 580
 581         if (started == FALSE)
 582                 return 0;
 583
 584         if (element_root != NULL)
 585                 g_node_traverse(element_root, G_PRE_ORDER,
 586                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 587
 588         return 0;
 589 }
 590
 591 static void disable_element(struct connman_element *element)
 592 {
 593         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 594                 return;
 595
 596         if (element->enabled == FALSE)
 597                 return;
 598
 599         if (element->driver && element->driver->disable) {
 600                 if (element->driver->disable(element) == 0)
 601                         element->enabled = FALSE;
 602         }
 603 }
 604
 605 static gboolean remove_driver(GNode *node, gpointer data)
 606 {
 607         struct connman_element *element = node->data;
 608         struct connman_driver *driver = data;
 609
 610         DBG("element %p name %s", element, element->name);
 611
 612         if (element->driver == driver) {
 613                 disable_element(element);
 614
 615                 if (driver->remove)
 616                         driver->remove(element);
 617
 618                 __connman_element_lock(element);
 619                 element->driver = NULL;
 620                 __connman_element_unlock(element);
 621         }
 622
 623         return FALSE;
 624 }
 625
 626 /**
 627  * connman_driver_unregister:
 628  * @driver: driver definition
 629  *
 630  * Remove a previously registered driver
 631  */
 632 void connman_driver_unregister(struct connman_driver *driver)
 633 {
 634         DBG("driver %p name %s", driver, driver->name);
 635
 636         driver_list = g_slist_remove(driver_list, driver);
 637
 638         if (element_root != NULL)
 639                 g_node_traverse(element_root, G_POST_ORDER,
 640                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 641 }
 642
 643 /**
 644  * connman_element_create:
 645  * @name: element name
 646  *
 647  * Allocate a new element and assign the given #name to it. If the name
 648  * is #NULL, it will be later on created based on the element type.
 649  *
 650  * Returns: a newly-allocated #connman_element structure
 651  */
 652 struct connman_element *connman_element_create(const char *name)
 653 {
 654         struct connman_element *element;
 655
 656         element = g_try_new0(struct connman_element, 1);
 657         if (element == NULL)
 658                 return NULL;
 659
 660         DBG("element %p", element);
 661
 662         element->refcount = 1;
 663
 664         element->name    = g_strdup(name);
 665         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 666         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 667         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 668         element->policy  = CONNMAN_ELEMENT_POLICY_AUTO;
 669         element->index   = -1;
 670         element->enabled = FALSE;
 671
 672         return element;
 673 }
 674
 675 struct connman_element *connman_element_ref(struct connman_element *element)
 676 {
 677         DBG("element %p name %s refcount %d", element, element->name,
 678                                 g_atomic_int_get(&element->refcount) + 1);
 679
 680         g_atomic_int_inc(&element->refcount);
 681
 682         return element;
 683 }
 684
 685 static void free_properties(struct connman_element *element)
 686 {
 687         GSList *list;
 688
 689         DBG("element %p name %s", element, element->name);
 690
 691         __connman_element_lock(element);
 692
 693         for (list = element->properties; list; list = list->next) {
 694                 struct connman_property *property = list->data;
 695
 696                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 697                         g_free(property->value);
 698
 699                 g_free(property->name);
 700                 g_free(property);
 701         }
 702
 703         g_slist_free(element->properties);
 704
 705         element->properties = NULL;
 706
 707         __connman_element_unlock(element);
 708 }
 709
 710 void connman_element_unref(struct connman_element *element)
 711 {
 712         DBG("element %p name %s refcount %d", element, element->name,
 713                                 g_atomic_int_get(&element->refcount) - 1);
 714
 715         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 716                 if (element->destruct)
 717                         element->destruct(element);
 718                 free_properties(element);
 719                 g_free(element->ipv4.address);
 720                 g_free(element->ipv4.netmask);
 721                 g_free(element->ipv4.gateway);
 722                 g_free(element->ipv4.network);
 723                 g_free(element->ipv4.broadcast);
 724                 g_free(element->ipv4.nameserver);
 725                 g_free(element->devname);
 726                 g_free(element->devpath);
 727                 g_free(element->path);
 728                 g_free(element->name);
 729                 g_free(element);
 730         }
 731 }
 732
 733 int connman_element_add_static_property(struct connman_element *element,
 734                                 const char *name, int type, const void *value)
 735 {
 736         struct connman_property *property;
 737
 738         DBG("element %p name %s", element, element->name);
 739
 740         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 741                 return -EINVAL;
 742
 743         property = g_try_new0(struct connman_property, 1);
 744         if (property == NULL)
 745                 return -ENOMEM;
 746
 747         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 748         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 749         property->name  = g_strdup(name);
 750         property->type  = type;
 751
 752         DBG("name %s type %d value %p", name, type, value);
 753
 754         switch (type) {
 755         case DBUS_TYPE_STRING:
 756                 property->value = g_strdup(*((const char **) value));
 757                 break;
 758         case DBUS_TYPE_BYTE:
 759                 property->value = g_try_malloc(1);
 760                 if (property->value != NULL)
 761                         memcpy(property->value, value, 1);
 762                 break;
 763         }
 764
 765         __connman_element_lock(element);
 766         element->properties = g_slist_append(element->properties, property);
 767         __connman_element_unlock(element);
 768
 769         return 0;
 770 }
 771
 772 int connman_element_set_static_property(struct connman_element *element,
 773                                 const char *name, int type, const void *value)
 774 {
 775         GSList *list;
 776
 777         DBG("element %p name %s", element, element->name);
 778
 779         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 780                 return -EINVAL;
 781
 782         __connman_element_lock(element);
 783
 784         for (list = element->properties; list; list = list->next) {
 785                 struct connman_property *property = list->data;
 786
 787                 if (g_str_equal(property->name, name) == FALSE)
 788                         continue;
 789
 790                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
 791                         continue;
 792
 793                 property->type = type;
 794                 g_free(property->value);
 795
 796                 switch (type) {
 797                 case DBUS_TYPE_STRING:
 798                         property->value = g_strdup(*((const char **) value));
 799                         break;
 800                 case DBUS_TYPE_BYTE:
 801                         property->value = g_try_malloc(1);
 802                         if (property->value != NULL)
 803                                 memcpy(property->value, value, 1);
 804                         break;
 805                 }
 806         }
 807
 808         __connman_element_unlock(element);
 809
 810         return 0;
 811 }
 812
 813 int connman_element_add_static_array_property(struct connman_element *element,
 814                         const char *name, int type, const void *value, int len)
 815 {
 816         struct connman_property *property;
 817
 818         DBG("element %p name %s", element, element->name);
 819
 820         if (type != DBUS_TYPE_BYTE)
 821                 return -EINVAL;
 822
 823         property = g_try_new0(struct connman_property, 1);
 824         if (property == NULL)
 825                 return -ENOMEM;
 826
 827         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
 828         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 829         property->name    = g_strdup(name);
 830         property->type    = DBUS_TYPE_ARRAY;
 831         property->subtype = type;
 832
 833         DBG("name %s type %d value %p", name, type, value);
 834
 835         switch (type) {
 836         case DBUS_TYPE_BYTE:
 837                 property->value = g_try_malloc(len);
 838                 if (property->value != NULL) {
 839                         memcpy(property->value,
 840                                 *((const unsigned char **) value), len);
 841                         property->size = len;
 842                 }
 843                 break;
 844         }
 845
 846         __connman_element_lock(element);
 847         element->properties = g_slist_append(element->properties, property);
 848         __connman_element_unlock(element);
 849
 850         return 0;
 851 }
 852
 853 static void *get_reference_value(struct connman_element *element,
 854                                                 enum connman_property_id id)
 855 {
 856         GSList *list;
 857
 858         DBG("element %p name %s", element, element->name);
 859
 860         for (list = element->properties; list; list = list->next) {
 861                 struct connman_property *property = list->data;
 862
 863                 if (property->id != id)
 864                         continue;
 865
 866                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 867                         return property->value;
 868         }
 869
 870         if (element->parent == NULL)
 871                 return NULL;
 872
 873         return get_reference_value(element->parent, id);
 874 }
 875
 876 static void set_reference_properties(struct connman_element *element)
 877 {
 878         GSList *list;
 879
 880         DBG("element %p name %s", element, element->name);
 881
 882         for (list = element->properties; list; list = list->next) {
 883                 struct connman_property *property = list->data;
 884
 885                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 886                         continue;
 887
 888                 property->value = get_reference_value(element->parent,
 889                                                                 property->id);
 890         }
 891 }
 892
 893 static struct connman_property *create_property(struct connman_element *element,
 894                                                 enum connman_property_id id)
 895 {
 896         struct connman_property *property;
 897         GSList *list;
 898
 899         DBG("element %p name %s", element, element->name);
 900
 901         __connman_element_lock(element);
 902
 903         for (list = element->properties; list; list = list->next) {
 904                 property = list->data;
 905
 906                 if (property->id == id)
 907                         goto unlock;
 908         }
 909
 910         property = g_try_new0(struct connman_property, 1);
 911         if (property == NULL)
 912                 goto unlock;
 913
 914         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
 915         property->id    = id;
 916         property->name  = g_strdup(propid2name(id));
 917         property->type  = propid2type(id);
 918
 919         if (property->name == NULL) {
 920                 g_free(property);
 921                 property = NULL;
 922                 goto unlock;
 923         }
 924
 925         element->properties = g_slist_append(element->properties, property);
 926
 927 unlock:
 928         __connman_element_unlock(element);
 929
 930         return property;
 931 }
 932
 933 static void create_default_properties(struct connman_element *element)
 934 {
 935         struct connman_property *property;
 936         int i;
 937
 938         DBG("element %p name %s", element, element->name);
 939
 940         for (i = 0; propid_table[i].name; i++) {
 941                 DBG("property %s", propid_table[i].name);
 942
 943                 property = create_property(element, propid_table[i].id);
 944
 945                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 946
 947                 if (propid_table[i].type != DBUS_TYPE_STRING)
 948                         continue;
 949
 950                 if (propid_table[i].value)
 951                         property->value = g_strdup(propid_table[i].value);
 952                 else
 953                         property->value = g_strdup("");
 954         }
 955 }
 956
 957 static int define_properties_valist(struct connman_element *element,
 958                                                                 va_list args)
 959 {
 960         enum connman_property_id id;
 961
 962         DBG("element %p name %s", element, element->name);
 963
 964         id = va_arg(args, enum connman_property_id);
 965
 966         while (id != CONNMAN_PROPERTY_ID_INVALID) {
 967
 968                 DBG("property %d", id);
 969
 970                 create_property(element, id);
 971
 972                 id = va_arg(args, enum connman_property_id);
 973         }
 974
 975         return 0;
 976 }
 977
 978 /**
 979  * connman_element_define_properties:
 980  * @element: an element
 981  * @varargs: list of property identifiers
 982  *
 983  * Define the valid properties for an element.
 984  *
 985  * Returns: %0 on success
 986  */
 987 int connman_element_define_properties(struct connman_element *element, ...)
 988 {
 989         va_list args;
 990         int err;
 991
 992         DBG("element %p name %s", element, element->name);
 993
 994         va_start(args, element);
 995
 996         err = define_properties_valist(element, args);
 997
 998         va_end(args);
 999
1000         return err;
1001 }
1002
1003 int connman_element_create_property(struct connman_element *element,
1004                                                 const char *name, int type)
1005 {
1006         return -EIO;
1007 }
1008
1009 int connman_element_set_property(struct connman_element *element,
1010                                 enum connman_property_id id, const void *value)
1011 {
1012         switch (id) {
1013         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1014                 __connman_element_lock(element);
1015                 g_free(element->ipv4.address);
1016                 element->ipv4.address = g_strdup(*((const char **) value));
1017                 __connman_element_unlock(element);
1018                 break;
1019         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1020                 __connman_element_lock(element);
1021                 g_free(element->ipv4.netmask);
1022                 element->ipv4.netmask = g_strdup(*((const char **) value));
1023                 __connman_element_unlock(element);
1024                 break;
1025         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1026                 __connman_element_lock(element);
1027                 g_free(element->ipv4.gateway);
1028                 element->ipv4.gateway = g_strdup(*((const char **) value));
1029                 __connman_element_unlock(element);
1030                 break;
1031         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1032                 __connman_element_lock(element);
1033                 g_free(element->ipv4.broadcast);
1034                 element->ipv4.broadcast = g_strdup(*((const char **) value));
1035                 __connman_element_unlock(element);
1036                 break;
1037         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1038                 __connman_element_lock(element);
1039                 g_free(element->ipv4.nameserver);
1040                 element->ipv4.nameserver = g_strdup(*((const char **) value));
1041                 __connman_element_unlock(element);
1042                 break;
1043         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1044                 __connman_element_lock(element);
1045                 g_free(element->wifi.security);
1046                 element->wifi.security = g_strdup(*((const char **) value));
1047                 __connman_element_unlock(element);
1048                 break;
1049         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1050                 __connman_element_lock(element);
1051                 g_free(element->wifi.passphrase);
1052                 element->wifi.passphrase = g_strdup(*((const char **) value));
1053                 __connman_element_unlock(element);
1054                 break;
1055         default:
1056                 return -EINVAL;
1057         }
1058
1059         return 0;
1060 }
1061
1062 int connman_element_get_value(struct connman_element *element,
1063                                 enum connman_property_id id, void *value)
1064 {
1065         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1066                 return -EINVAL;
1067
1068         switch (id) {
1069         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1070                 if (element->ipv4.address == NULL)
1071                         return connman_element_get_value(element->parent,
1072                                                                 id, value);
1073                 __connman_element_lock(element);
1074                 *((char **) value) = element->ipv4.address;
1075                 __connman_element_unlock(element);
1076                 break;
1077         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1078                 if (element->ipv4.netmask == NULL)
1079                         return connman_element_get_value(element->parent,
1080                                                                 id, value);
1081                 __connman_element_lock(element);
1082                 *((char **) value) = element->ipv4.netmask;
1083                 __connman_element_unlock(element);
1084                 break;
1085         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1086                 if (element->ipv4.gateway == NULL)
1087                         return connman_element_get_value(element->parent,
1088                                                                 id, value);
1089                 __connman_element_lock(element);
1090                 *((char **) value) = element->ipv4.gateway;
1091                 __connman_element_unlock(element);
1092                 break;
1093         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1094                 if (element->ipv4.broadcast == NULL)
1095                         return connman_element_get_value(element->parent,
1096                                                                 id, value);
1097                 __connman_element_lock(element);
1098                 *((char **) value) = element->ipv4.broadcast;
1099                 __connman_element_unlock(element);
1100                 break;
1101         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1102                 if (element->ipv4.nameserver == NULL)
1103                         return connman_element_get_value(element->parent,
1104                                                                 id, value);
1105                 __connman_element_lock(element);
1106                 *((char **) value) = element->ipv4.nameserver;
1107                 __connman_element_unlock(element);
1108                 break;
1109         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1110                 if (element->wifi.security == NULL)
1111                         return connman_element_get_value(element->parent,
1112                                                                 id, value);
1113                 __connman_element_lock(element);
1114                 *((char **) value) = element->wifi.security;
1115                 __connman_element_unlock(element);
1116                 break;
1117         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1118                 if (element->wifi.passphrase == NULL)
1119                         return connman_element_get_value(element->parent,
1120                                                                 id, value);
1121                 __connman_element_lock(element);
1122                 *((char **) value) = element->wifi.passphrase;
1123                 __connman_element_unlock(element);
1124                 break;
1125         default:
1126                 return -EINVAL;
1127         }
1128
1129         return 0;
1130 }
1131
1132 gboolean connman_element_get_static_property(struct connman_element *element,
1133                                                 const char *name, void *value)
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                         switch (property->type) {
1150                         case DBUS_TYPE_STRING:
1151                                 *((char **) value) = property->value;
1152                                 found = TRUE;
1153                                 break;
1154                         }
1155                         break;
1156                 }
1157         }
1158
1159         __connman_element_unlock(element);
1160
1161         return found;
1162 }
1163
1164 gboolean connman_element_get_static_array_property(struct connman_element *element,
1165                                         const char *name, void *value, int *len)
1166 {
1167         GSList *list;
1168         gboolean found = FALSE;
1169
1170         DBG("element %p name %s", element, element->name);
1171
1172         __connman_element_lock(element);
1173
1174         for (list = element->properties; list; list = list->next) {
1175                 struct connman_property *property = list->data;
1176
1177                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1178                         continue;
1179
1180                 if (g_str_equal(property->name, name) == TRUE) {
1181                         *((char **) value) = property->value;
1182                         *len = property->size;
1183                         found = TRUE;
1184                         break;
1185                 }
1186         }
1187
1188         __connman_element_unlock(element);
1189
1190         return found;
1191 }
1192
1193 gboolean connman_element_match_static_property(struct connman_element *element,
1194                                         const char *name, const void *value)
1195 {
1196         GSList *list;
1197         gboolean result = FALSE;
1198
1199         DBG("element %p name %s", element, element->name);
1200
1201         __connman_element_lock(element);
1202
1203         for (list = element->properties; list; list = list->next) {
1204                 struct connman_property *property = list->data;
1205
1206                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1207                         continue;
1208
1209                 if (g_str_equal(property->name, name) == FALSE)
1210                         continue;
1211
1212                 if (property->type == DBUS_TYPE_STRING)
1213                         result = g_str_equal(property->value,
1214                                                 *((const char **) value));
1215
1216                 if (result == TRUE)
1217                         break;
1218         }
1219
1220         __connman_element_unlock(element);
1221
1222         return result;
1223 }
1224
1225 static void append_connections(DBusMessageIter *entry)
1226 {
1227         DBusMessageIter value, iter;
1228         const char *key = "Connections";
1229
1230         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1231
1232         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1233                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1234                                                                 &value);
1235
1236         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1237                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1238         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1239         dbus_message_iter_close_container(&value, &iter);
1240
1241         dbus_message_iter_close_container(entry, &value);
1242 }
1243
1244 static void emit_connections_signal(DBusConnection *conn)
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_connections(&entry);
1259
1260         g_dbus_send_message(conn, signal);
1261 }
1262
1263 static void append_state(DBusMessageIter *entry, const char *state)
1264 {
1265         DBusMessageIter value;
1266         const char *key = "State";
1267
1268         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1269
1270         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1271                                         DBUS_TYPE_STRING_AS_STRING, &value);
1272         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1273         dbus_message_iter_close_container(entry, &value);
1274 }
1275
1276 static void emit_state_change(DBusConnection *conn, const char *state)
1277 {
1278         DBusMessage *signal;
1279         DBusMessageIter entry;
1280
1281         DBG("conn %p", conn);
1282
1283         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1284                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1285         if (signal == NULL)
1286                 return;
1287
1288         dbus_message_iter_init_append(signal, &entry);
1289
1290         append_state(&entry, state);
1291
1292         g_dbus_send_message(conn, signal);
1293 }
1294
1295 static void set_signal_strength(struct connman_element *connection)
1296 {
1297         struct connman_element *element = connection;
1298
1299         while (element != NULL) {
1300                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1301                         connection->strength = element->strength;
1302                         break;
1303                 }
1304
1305                 element = element->parent;
1306         }
1307 }
1308
1309 static void probe_element(struct connman_element *element)
1310 {
1311         GSList *list;
1312
1313         DBG("element %p name %s", element, element->name);
1314
1315         for (list = driver_list; list; list = list->next) {
1316                 struct connman_driver *driver = list->data;
1317
1318                 if (match_driver(element, driver) == FALSE)
1319                         continue;
1320
1321                 DBG("driver %p name %s", driver, driver->name);
1322
1323                 if (driver->probe(element) == 0) {
1324                         __connman_element_lock(element);
1325                         element->driver = driver;
1326                         __connman_element_unlock(element);
1327
1328                         enable_element(element);
1329                         break;
1330                 }
1331         }
1332 }
1333
1334 static void register_element(gpointer data, gpointer user_data)
1335 {
1336         struct connman_element *element = data;
1337         const gchar *basepath;
1338         GNode *node;
1339
1340         __connman_element_lock(element);
1341
1342         if (element->parent) {
1343                 node = g_node_find(element_root, G_PRE_ORDER,
1344                                         G_TRAVERSE_ALL, element->parent);
1345                 basepath = element->parent->path;
1346
1347                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
1348                         element->subtype = element->parent->subtype;
1349         } else {
1350                 element->parent = element_root->data;
1351
1352                 node = element_root;
1353                 basepath = "";
1354         }
1355
1356         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1357
1358         set_reference_properties(element);
1359
1360         __connman_element_unlock(element);
1361
1362         DBG("element %p path %s", element, element->path);
1363
1364         g_node_append_data(node, element);
1365
1366         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1367                 set_signal_strength(element);
1368                 emit_connections_signal(connection);
1369                 emit_state_change(connection, "online");
1370         }
1371
1372         emit_element_signal(connection, "ElementAdded", element);
1373
1374         if (started == FALSE)
1375                 return;
1376
1377         probe_element(element);
1378 }
1379
1380 /**
1381  * connman_element_register:
1382  * @element: the element to register
1383  * @parent: the parent to register the element with
1384  *
1385  * Register an element with the core. It will be register under the given
1386  * parent of if %NULL is provided under the root element.
1387  *
1388  * Returns: %0 on success
1389  */
1390 int connman_element_register(struct connman_element *element,
1391                                         struct connman_element *parent)
1392 {
1393         DBG("element %p name %s parent %p", element, element->name, parent);
1394
1395         if (element->devname == NULL)
1396                 element->devname = g_strdup(element->name);
1397
1398         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1399                 if (g_pattern_match_simple(device_filter,
1400                                                 element->devname) == FALSE) {
1401                         DBG("ignoring %s [%s] device", element->name,
1402                                                         element->devname);
1403                         return -EPERM;
1404                 }
1405         }
1406
1407         if (connman_element_ref(element) == NULL)
1408                 return -EINVAL;
1409
1410         __connman_element_lock(element);
1411
1412         if (element->name == NULL) {
1413                 element->name = g_strdup(type2string(element->type));
1414                 if (element->name == NULL) {
1415                         __connman_element_unlock(element);
1416                         return -EINVAL;
1417                 }
1418         }
1419
1420         element->parent = parent;
1421
1422         __connman_element_unlock(element);
1423
1424         register_element(element, NULL);
1425
1426         return 0;
1427 }
1428
1429 static gboolean remove_element(GNode *node, gpointer user_data)
1430 {
1431         struct connman_element *element = node->data;
1432         struct connman_element *root = user_data;
1433
1434         DBG("element %p name %s", element, element->name);
1435
1436         if (element == root)
1437                 return FALSE;
1438
1439         if (node != NULL)
1440                 g_node_unlink(node);
1441
1442         if (element->driver) {
1443                 disable_element(element);
1444
1445                 if (element->driver->remove)
1446                         element->driver->remove(element);
1447
1448                 __connman_element_lock(element);
1449                 element->driver = NULL;
1450                 __connman_element_unlock(element);
1451         }
1452
1453         if (node != NULL)
1454                 g_node_destroy(node);
1455
1456         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1457                 if (__connman_element_count(NULL,
1458                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1459                         emit_state_change(connection, "offline");
1460                 emit_connections_signal(connection);
1461         }
1462
1463         emit_element_signal(connection, "ElementRemoved", element);
1464
1465         connman_element_unref(element);
1466
1467         return FALSE;
1468 }
1469
1470 void connman_element_unregister(struct connman_element *element)
1471 {
1472         GNode *node;
1473
1474         DBG("element %p name %s", element, element->name);
1475
1476         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1477
1478         if (node != NULL)
1479                 g_node_traverse(node, G_POST_ORDER,
1480                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1481 }
1482
1483 void connman_element_unregister_children(struct connman_element *element)
1484 {
1485         GNode *node;
1486
1487         DBG("element %p name %s", element, element->name);
1488
1489         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1490
1491         if (node != NULL)
1492                 g_node_traverse(node, G_POST_ORDER,
1493                                 G_TRAVERSE_ALL, -1, remove_element, element);
1494 }
1495
1496 static gboolean update_element(GNode *node, gpointer user_data)
1497 {
1498         struct connman_element *element = node->data;
1499         struct connman_element *root = user_data;
1500
1501         DBG("element %p name %s", element, element->name);
1502
1503         if (element->driver && element->driver->update)
1504                 element->driver->update(element);
1505
1506         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1507                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1508                 if (element->strength != root->strength)
1509                         element->strength = root->strength;
1510         }
1511
1512         emit_element_signal(connection, "ElementUpdated", element);
1513
1514         return FALSE;
1515 }
1516
1517 void connman_element_update(struct connman_element *element)
1518 {
1519         GNode *node;
1520
1521         DBG("element %p name %s", element, element->name);
1522
1523         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1524
1525         if (node != NULL)
1526                 g_node_traverse(node, G_PRE_ORDER,
1527                                 G_TRAVERSE_ALL, -1, update_element, element);
1528 }
1529
1530 int connman_element_set_enabled(struct connman_element *element,
1531                                                         gboolean enabled)
1532 {
1533         if (element->enabled == enabled)
1534                 return 0;
1535
1536         element->enabled = enabled;
1537
1538         return 0;
1539 }
1540
1541 int __connman_element_init(DBusConnection *conn, const char *device)
1542 {
1543         struct connman_element *element;
1544
1545         DBG("conn %p", conn);
1546
1547         connection = dbus_connection_ref(conn);
1548         if (connection == NULL)
1549                 return -EIO;
1550
1551         device_filter = g_strdup(device);
1552
1553         element = connman_element_create("root");
1554
1555         element->path = g_strdup("/");
1556         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1557
1558         create_default_properties(element);
1559
1560         element_root = g_node_new(element);
1561
1562         __connman_network_init();
1563         __connman_device_init();
1564
1565         return 0;
1566 }
1567
1568 static gboolean probe_node(GNode *node, gpointer data)
1569 {
1570         struct connman_element *element = node->data;
1571
1572         DBG("element %p name %s", element, element->name);
1573
1574         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1575                 return FALSE;
1576
1577         if (element->driver)
1578                 return FALSE;
1579
1580         probe_element(element);
1581
1582         return FALSE;
1583 }
1584
1585 void __connman_element_start(void)
1586 {
1587         DBG("");
1588
1589         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1590                                                         probe_node, NULL);
1591
1592         started = TRUE;
1593
1594         __connman_connection_init();
1595         __connman_detect_init();
1596 }
1597
1598 void __connman_element_stop(void)
1599 {
1600         DBG("");
1601
1602         __connman_detect_cleanup();
1603         __connman_connection_cleanup();
1604 }
1605
1606 static gboolean free_driver(GNode *node, gpointer data)
1607 {
1608         struct connman_element *element = node->data;
1609
1610         DBG("element %p name %s", element, element->name);
1611
1612         if (element->driver) {
1613                 disable_element(element);
1614
1615                 if (element->driver->remove)
1616                         element->driver->remove(element);
1617
1618                 __connman_element_lock(element);
1619                 element->driver = NULL;
1620                 __connman_element_unlock(element);
1621         }
1622
1623         return FALSE;
1624 }
1625
1626 static gboolean free_node(GNode *node, gpointer data)
1627 {
1628         struct connman_element *element = node->data;
1629
1630         DBG("element %p name %s", element, element->name);
1631
1632         if (g_node_depth(node) > 1)
1633                 connman_element_unregister(element);
1634
1635         return FALSE;
1636 }
1637
1638 void __connman_element_cleanup(void)
1639 {
1640         DBG("");
1641
1642         __connman_device_cleanup();
1643         __connman_network_cleanup();
1644
1645         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1646                                                         free_driver, NULL);
1647
1648         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1649                                                         free_node, NULL);
1650
1651         g_node_destroy(element_root);
1652         element_root = NULL;
1653
1654         g_free(device_filter);
1655
1656         dbus_connection_unref(connection);
1657 }