vcs.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 static const char *subtype2string(enum connman_element_subtype type)
 131 {
 132         switch (type) {
 133         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
 134                 return "unknown";
 135         case CONNMAN_ELEMENT_SUBTYPE_FAKE:
 136                 return "fake";
 137         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
 138                 return "ethernet";
 139         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
 140                 return "wifi";
 141         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
 142                 return "wimax";
 143         case CONNMAN_ELEMENT_SUBTYPE_CELLULAR:
 144                 return "cellular";
 145         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
 146                 return "bluetooth";
 147         }
 148
 149         return NULL;
 150 }
 151
 152 const char *__connman_element_policy2string(enum connman_element_policy policy)
 153 {
 154         switch (policy) {
 155         case CONNMAN_ELEMENT_POLICY_UNKNOWN:
 156                 return "unknown";
 157         case CONNMAN_ELEMENT_POLICY_IGNORE:
 158                 return "ignore";
 159         case CONNMAN_ELEMENT_POLICY_AUTO:
 160                 return "auto";
 161         case CONNMAN_ELEMENT_POLICY_ASK:
 162                 return "ask";
 163         }
 164
 165         return NULL;
 166 }
 167
 168 enum connman_element_policy __connman_element_string2policy(const char *policy)
 169 {
 170         if (strcasecmp(policy, "ignore") == 0)
 171                 return CONNMAN_ELEMENT_POLICY_IGNORE;
 172         else if (strcasecmp(policy, "auto") == 0)
 173                 return CONNMAN_ELEMENT_POLICY_AUTO;
 174         else if (strcasecmp(policy, "ask") == 0)
 175                 return CONNMAN_ELEMENT_POLICY_ASK;
 176         else
 177                 return CONNMAN_ELEMENT_POLICY_UNKNOWN;
 178 }
 179
 180 const char *__connman_ipv4_method2string(enum connman_ipv4_method method)
 181 {
 182         switch (method) {
 183         case CONNMAN_IPV4_METHOD_UNKNOWN:
 184                 return "unknown";
 185         case CONNMAN_IPV4_METHOD_OFF:
 186                 return "off";
 187         case CONNMAN_IPV4_METHOD_STATIC:
 188                 return "static";
 189         case CONNMAN_IPV4_METHOD_DHCP:
 190                 return "dhcp";
 191         }
 192
 193         return "unknown";
 194 }
 195
 196 enum connman_ipv4_method __connman_ipv4_string2method(const char *method)
 197 {
 198         if (strcasecmp(method, "off") == 0)
 199                 return CONNMAN_IPV4_METHOD_OFF;
 200         else if (strcasecmp(method, "static") == 0)
 201                 return CONNMAN_IPV4_METHOD_STATIC;
 202         else if (strcasecmp(method, "dhcp") == 0)
 203                 return CONNMAN_IPV4_METHOD_DHCP;
 204         else
 205                 return CONNMAN_IPV4_METHOD_UNKNOWN;
 206 }
 207
 208 static void append_property(DBusMessageIter *dict,
 209                                 struct connman_property *property)
 210 {
 211         if (property->value == NULL)
 212                 return;
 213
 214         switch (property->type) {
 215         case DBUS_TYPE_ARRAY:
 216                 connman_dbus_dict_append_array(dict, property->name,
 217                         property->subtype, &property->value, property->size);
 218                 break;
 219         case DBUS_TYPE_STRING:
 220                 connman_dbus_dict_append_variant(dict, property->name,
 221                                         property->type, &property->value);
 222                 break;
 223         default:
 224                 connman_dbus_dict_append_variant(dict, property->name,
 225                                         property->type, property->value);
 226                 break;
 227         }
 228 }
 229
 230 static void add_common_properties(struct connman_element *element,
 231                                                 DBusMessageIter *dict)
 232 {
 233         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 234         GSList *list;
 235
 236         connman_element_get_value(element,
 237                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 238         connman_element_get_value(element,
 239                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 240         connman_element_get_value(element,
 241                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 242
 243         if (element->priority > 0)
 244                 connman_dbus_dict_append_variant(dict, "Priority",
 245                                         DBUS_TYPE_UINT16, &element->priority);
 246
 247         if (address != NULL)
 248                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 249                                                 DBUS_TYPE_STRING, &address);
 250         if (netmask != NULL)
 251                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 252                                                 DBUS_TYPE_STRING, &netmask);
 253         if (gateway != NULL)
 254                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 255                                                 DBUS_TYPE_STRING, &gateway);
 256
 257         if (element->wifi.security != NULL) {
 258                 const char *passphrase = "";
 259
 260                 connman_dbus_dict_append_variant(dict, "WiFi.Security",
 261                                 DBUS_TYPE_STRING, &element->wifi.security);
 262
 263                 if (element->wifi.passphrase != NULL)
 264                         passphrase = element->wifi.passphrase;
 265
 266                 connman_dbus_dict_append_variant(dict, "WiFi.Passphrase",
 267                                 DBUS_TYPE_STRING, &passphrase);
 268         }
 269
 270         __connman_element_lock(element);
 271
 272         for (list = element->properties; list; list = list->next) {
 273                 struct connman_property *property = list->data;
 274
 275                 append_property(dict, property);
 276         }
 277
 278         __connman_element_unlock(element);
 279 }
 280
 281 #if 0
 282 static void set_common_property(struct connman_element *element,
 283                                 const char *name, DBusMessageIter *value)
 284 {
 285         GSList *list;
 286
 287         if (g_str_equal(name, "Priority") == TRUE) {
 288                 dbus_message_iter_get_basic(value, &element->priority);
 289                 return;
 290         }
 291
 292         __connman_element_lock(element);
 293
 294         for (list = element->properties; list; list = list->next) {
 295                 struct connman_property *property = list->data;
 296                 const char *str;
 297
 298                 if (g_str_equal(property->name, name) == FALSE)
 299                         continue;
 300
 301                 if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)
 302                         continue;
 303
 304                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 305
 306                 if (property->type == DBUS_TYPE_STRING) {
 307                         dbus_message_iter_get_basic(value, &str);
 308                         g_free(property->value);
 309                         property->value = g_strdup(str);
 310                 } else
 311                         property->value = NULL;
 312         }
 313
 314         __connman_element_unlock(element);
 315 }
 316 #endif
 317
 318 static void emit_element_signal(DBusConnection *conn, const char *member,
 319                                         struct connman_element *element)
 320 {
 321         DBusMessage *signal;
 322
 323         if (__connman_debug_enabled() == FALSE)
 324                 return;
 325
 326         DBG("conn %p member %s", conn, member);
 327
 328         if (element == NULL)
 329                 return;
 330
 331         signal = dbus_message_new_signal(element->path,
 332                                         CONNMAN_DEBUG_INTERFACE, member);
 333         if (signal == NULL)
 334                 return;
 335
 336         g_dbus_send_message(conn, signal);
 337 }
 338
 339 static void emit_enabled_signal(DBusConnection *conn,
 340                                         struct connman_element *element)
 341 {
 342         DBusMessage *signal;
 343         DBusMessageIter entry, value;
 344         const char *iface, *key;
 345
 346         DBG("conn %p", conn);
 347
 348         if (element == NULL)
 349                 return;
 350
 351         switch (element->type) {
 352         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 353                 iface = CONNMAN_CONNECTION_INTERFACE;
 354                 key = "Default";
 355                 break;
 356         default:
 357                 return;
 358         }
 359
 360         signal = dbus_message_new_signal(element->path,
 361                                                 iface, "PropertyChanged");
 362         if (signal == NULL)
 363                 return;
 364
 365         dbus_message_iter_init_append(signal, &entry);
 366
 367         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 368
 369         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 370                                         DBUS_TYPE_BOOLEAN_AS_STRING, &value);
 371         dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN,
 372                                                         &element->enabled);
 373         dbus_message_iter_close_container(&entry, &value);
 374
 375         g_dbus_send_message(conn, signal);
 376 }
 377
 378 static DBusMessage *do_enable(DBusConnection *conn,
 379                                         DBusMessage *msg, void *data)
 380 {
 381         struct connman_element *element = data;
 382
 383         DBG("conn %p", conn);
 384
 385         if (element->enabled == TRUE)
 386                 return __connman_error_failed(msg);
 387
 388         if (element->driver && element->driver->enable) {
 389                 DBG("Calling enable callback");
 390                 if (element->driver->enable(element) < 0)
 391                         return __connman_error_failed(msg);
 392         }
 393
 394         element->enabled = TRUE;
 395
 396         emit_enabled_signal(connection, element);
 397
 398         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 399 }
 400
 401 static DBusMessage *do_disable(DBusConnection *conn,
 402                                         DBusMessage *msg, void *data)
 403 {
 404         struct connman_element *element = data;
 405
 406         DBG("conn %p", conn);
 407
 408         if (element->enabled == FALSE)
 409                 return __connman_error_failed(msg);
 410
 411         if (element->driver && element->driver->disable) {
 412                 DBG("Calling disable callback");
 413                 if (element->driver->disable(element) < 0)
 414                         return __connman_error_failed(msg);
 415         }
 416
 417         element->enabled = FALSE;
 418
 419         emit_enabled_signal(connection, element);
 420
 421         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 422 }
 423
 424 static DBusMessage *connection_get_properties(DBusConnection *conn,
 425                                         DBusMessage *msg, void *data)
 426 {
 427         struct connman_element *element = data;
 428         DBusMessage *reply;
 429         DBusMessageIter array, dict;
 430         const char *str;
 431
 432         DBG("conn %p", conn);
 433
 434         reply = dbus_message_new_method_return(msg);
 435         if (reply == NULL)
 436                 return NULL;
 437
 438         dbus_message_iter_init_append(reply, &array);
 439
 440         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 441                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 442                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 443                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 444
 445         str = subtype2string(element->subtype);
 446         if (str != NULL)
 447                 connman_dbus_dict_append_variant(&dict, "Type",
 448                                                 DBUS_TYPE_STRING, &str);
 449
 450         if (element->devname != NULL)
 451                 connman_dbus_dict_append_variant(&dict, "Interface",
 452                                         DBUS_TYPE_STRING, &element->devname);
 453
 454         if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIFI ||
 455                         element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIMAX)
 456                 connman_dbus_dict_append_variant(&dict, "Strength",
 457                                         DBUS_TYPE_BYTE, &element->strength);
 458
 459         connman_dbus_dict_append_variant(&dict, "Default",
 460                                         DBUS_TYPE_BOOLEAN, &element->enabled);
 461
 462         add_common_properties(element, &dict);
 463
 464         dbus_message_iter_close_container(&array, &dict);
 465
 466         return reply;
 467 }
 468
 469 static DBusMessage *connection_set_property(DBusConnection *conn,
 470                                         DBusMessage *msg, void *data)
 471 {
 472         struct connman_element *element = data;
 473         DBusMessageIter iter, value;
 474         const char *name;
 475
 476         DBG("conn %p", conn);
 477
 478         if (dbus_message_iter_init(msg, &iter) == FALSE)
 479                 return __connman_error_invalid_arguments(msg);
 480
 481         dbus_message_iter_get_basic(&iter, &name);
 482         dbus_message_iter_next(&iter);
 483         dbus_message_iter_recurse(&iter, &value);
 484
 485         if (__connman_security_check_privileges(msg) < 0)
 486                 return __connman_error_permission_denied(msg);
 487
 488         if (g_str_equal(name, "Default") == TRUE) {
 489                 dbus_bool_t enabled;
 490
 491                 dbus_message_iter_get_basic(&value, &enabled);
 492
 493                 if (enabled == TRUE)
 494                         return do_enable(conn, msg, element);
 495                 else
 496                         return do_disable(conn, msg, element);
 497         }
 498
 499         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 500 }
 501
 502 static GDBusMethodTable connection_methods[] = {
 503         { "GetProperties", "",   "a{sv}", connection_get_properties },
 504         { "SetProperty",   "sv", "",      connection_set_property   },
 505         { },
 506 };
 507
 508 static GDBusSignalTable element_signals[] = {
 509         { "PropertyChanged", "sv" },
 510         { },
 511 };
 512
 513 struct foreach_data {
 514         enum connman_element_type type;
 515         element_cb_t callback;
 516         gpointer user_data;
 517 };
 518
 519 static gboolean foreach_callback(GNode *node, gpointer user_data)
 520 {
 521         struct connman_element *element = node->data;
 522         struct foreach_data *data = user_data;
 523
 524         DBG("element %p name %s", element, element->name);
 525
 526         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 527                 return FALSE;
 528
 529         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 530                                         data->type != element->type)
 531                 return FALSE;
 532
 533         if (data->callback)
 534                 data->callback(element, data->user_data);
 535
 536         return FALSE;
 537 }
 538
 539 void __connman_element_foreach(struct connman_element *element,
 540                                 enum connman_element_type type,
 541                                 element_cb_t callback, gpointer user_data)
 542 {
 543         struct foreach_data data = { type, callback, user_data };
 544         GNode *node;
 545
 546         DBG("");
 547
 548         if (element != NULL) {
 549                 node = g_node_find(element_root, G_PRE_ORDER,
 550                                                 G_TRAVERSE_ALL, element);
 551                 if (node == NULL)
 552                         return;
 553         } else
 554                 node = element_root;
 555
 556         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 557                                                 foreach_callback, &data);
 558 }
 559
 560 struct append_filter {
 561         enum connman_element_type type;
 562         DBusMessageIter *iter;
 563 };
 564
 565 static gboolean append_path(GNode *node, gpointer user_data)
 566 {
 567         struct connman_element *element = node->data;
 568         struct append_filter *filter = user_data;
 569
 570         DBG("element %p name %s", element, element->name);
 571
 572         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 573                 return FALSE;
 574
 575         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 576                                         filter->type != element->type)
 577                 return FALSE;
 578
 579         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 580                         __connman_device_has_driver(element->device) == FALSE)
 581                 return FALSE;
 582
 583         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 584                         __connman_network_has_driver(element->network) == FALSE)
 585                 return FALSE;
 586
 587         dbus_message_iter_append_basic(filter->iter,
 588                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 589
 590         return FALSE;
 591 }
 592
 593 void __connman_element_list(struct connman_element *element,
 594                                         enum connman_element_type type,
 595                                                         DBusMessageIter *iter)
 596 {
 597         struct append_filter filter = { type, iter };
 598         GNode *node;
 599
 600         DBG("");
 601
 602         if (element != NULL) {
 603                 node = g_node_find(element_root, G_PRE_ORDER,
 604                                                 G_TRAVERSE_ALL, element);
 605                 if (node == NULL)
 606                         return;
 607         } else
 608                 node = element_root;
 609
 610         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 611                                                 append_path, &filter);
 612 }
 613
 614 struct count_data {
 615         enum connman_element_type type;
 616         int count;
 617 };
 618
 619 static gboolean count_element(GNode *node, gpointer user_data)
 620 {
 621         struct connman_element *element = node->data;
 622         struct count_data *data = user_data;
 623
 624         DBG("element %p name %s", element, element->name);
 625
 626         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 627                 return FALSE;
 628
 629         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 630                                         data->type != element->type)
 631                 return FALSE;
 632
 633         data->count++;
 634
 635         return FALSE;
 636 }
 637
 638 int __connman_element_count(struct connman_element *element,
 639                                         enum connman_element_type type)
 640 {
 641         struct count_data data = { type, 0 };
 642         GNode *node;
 643
 644         DBG("");
 645
 646         if (element != NULL) {
 647                 node = g_node_find(element_root, G_PRE_ORDER,
 648                                                 G_TRAVERSE_ALL, element);
 649                 if (node == NULL)
 650                         return 0;
 651         } else
 652                 node = element_root;
 653
 654         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 655                                                 count_element, &data);
 656
 657         return data.count;
 658 }
 659
 660 static gint compare_priority(gconstpointer a, gconstpointer b)
 661 {
 662         const struct connman_driver *driver1 = a;
 663         const struct connman_driver *driver2 = b;
 664
 665         return driver2->priority - driver1->priority;
 666 }
 667
 668 static gboolean match_driver(struct connman_element *element,
 669                                         struct connman_driver *driver)
 670 {
 671         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 672                 return FALSE;
 673
 674         if (element->type != driver->type &&
 675                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 676                 return FALSE;
 677
 678         if (element->subtype == driver->subtype ||
 679                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 680                 return TRUE;
 681
 682         return FALSE;
 683 }
 684
 685 static void enable_element(struct connman_element *element)
 686 {
 687         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 688                 return;
 689
 690         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 691                 return;
 692
 693         if (element->driver && element->driver->enable) {
 694                 if (element->driver->enable(element) == 0) {
 695                         element->enabled = TRUE;
 696                         emit_enabled_signal(connection, element);
 697                 }
 698         }
 699 }
 700
 701 static gboolean probe_driver(GNode *node, gpointer data)
 702 {
 703         struct connman_element *element = node->data;
 704         struct connman_driver *driver = data;
 705
 706         DBG("element %p name %s", element, element->name);
 707
 708         if (!element->driver && match_driver(element, driver) == TRUE) {
 709                 if (driver->probe(element) < 0)
 710                         return FALSE;
 711
 712                 __connman_element_lock(element);
 713                 element->driver = driver;
 714                 __connman_element_unlock(element);
 715
 716                 enable_element(element);
 717         }
 718
 719         return FALSE;
 720 }
 721
 722 void __connman_driver_rescan(struct connman_driver *driver)
 723 {
 724         DBG("driver %p name %s", driver, driver->name);
 725
 726         if (!driver->probe)
 727                 return;
 728
 729         if (element_root != NULL)
 730                 g_node_traverse(element_root, G_PRE_ORDER,
 731                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 732 }
 733
 734 /**
 735  * connman_driver_register:
 736  * @driver: driver definition
 737  *
 738  * Register a new driver
 739  *
 740  * Returns: %0 on success
 741  */
 742 int connman_driver_register(struct connman_driver *driver)
 743 {
 744         DBG("driver %p name %s", driver, driver->name);
 745
 746         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 747                 return -EINVAL;
 748
 749         if (!driver->probe)
 750                 return -EINVAL;
 751
 752         driver_list = g_slist_insert_sorted(driver_list, driver,
 753                                                         compare_priority);
 754
 755         if (started == FALSE)
 756                 return 0;
 757
 758         if (element_root != NULL)
 759                 g_node_traverse(element_root, G_PRE_ORDER,
 760                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 761
 762         return 0;
 763 }
 764
 765 static void disable_element(struct connman_element *element)
 766 {
 767         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 768                 return;
 769
 770         if (element->enabled == FALSE)
 771                 return;
 772
 773         if (element->driver && element->driver->disable) {
 774                 if (element->driver->disable(element) == 0) {
 775                         element->enabled = FALSE;
 776                         emit_enabled_signal(connection, element);
 777                 }
 778         }
 779 }
 780
 781 static gboolean remove_driver(GNode *node, gpointer data)
 782 {
 783         struct connman_element *element = node->data;
 784         struct connman_driver *driver = data;
 785
 786         DBG("element %p name %s", element, element->name);
 787
 788         if (element->driver == driver) {
 789                 disable_element(element);
 790
 791                 if (driver->remove)
 792                         driver->remove(element);
 793
 794                 __connman_element_lock(element);
 795                 element->driver = NULL;
 796                 __connman_element_unlock(element);
 797         }
 798
 799         return FALSE;
 800 }
 801
 802 /**
 803  * connman_driver_unregister:
 804  * @driver: driver definition
 805  *
 806  * Remove a previously registered driver
 807  */
 808 void connman_driver_unregister(struct connman_driver *driver)
 809 {
 810         DBG("driver %p name %s", driver, driver->name);
 811
 812         driver_list = g_slist_remove(driver_list, driver);
 813
 814         if (element_root != NULL)
 815                 g_node_traverse(element_root, G_POST_ORDER,
 816                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 817 }
 818
 819 /**
 820  * connman_element_create:
 821  * @name: element name
 822  *
 823  * Allocate a new element and assign the given #name to it. If the name
 824  * is #NULL, it will be later on created based on the element type.
 825  *
 826  * Returns: a newly-allocated #connman_element structure
 827  */
 828 struct connman_element *connman_element_create(const char *name)
 829 {
 830         struct connman_element *element;
 831
 832         element = g_try_new0(struct connman_element, 1);
 833         if (element == NULL)
 834                 return NULL;
 835
 836         DBG("element %p", element);
 837
 838         element->refcount = 1;
 839
 840         element->name    = g_strdup(name);
 841         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 842         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 843         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 844         element->policy  = CONNMAN_ELEMENT_POLICY_AUTO;
 845         element->index   = -1;
 846         element->enabled = FALSE;
 847
 848         return element;
 849 }
 850
 851 struct connman_element *connman_element_ref(struct connman_element *element)
 852 {
 853         DBG("element %p name %s refcount %d", element, element->name,
 854                                 g_atomic_int_get(&element->refcount) + 1);
 855
 856         g_atomic_int_inc(&element->refcount);
 857
 858         return element;
 859 }
 860
 861 static void free_properties(struct connman_element *element)
 862 {
 863         GSList *list;
 864
 865         DBG("element %p name %s", element, element->name);
 866
 867         __connman_element_lock(element);
 868
 869         for (list = element->properties; list; list = list->next) {
 870                 struct connman_property *property = list->data;
 871
 872                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 873                         g_free(property->value);
 874
 875                 g_free(property->name);
 876                 g_free(property);
 877         }
 878
 879         g_slist_free(element->properties);
 880
 881         element->properties = NULL;
 882
 883         __connman_element_unlock(element);
 884 }
 885
 886 void connman_element_unref(struct connman_element *element)
 887 {
 888         DBG("element %p name %s refcount %d", element, element->name,
 889                                 g_atomic_int_get(&element->refcount) - 1);
 890
 891         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 892                 if (element->destruct)
 893                         element->destruct(element);
 894                 free_properties(element);
 895                 g_free(element->ipv4.address);
 896                 g_free(element->ipv4.netmask);
 897                 g_free(element->ipv4.gateway);
 898                 g_free(element->ipv4.network);
 899                 g_free(element->ipv4.broadcast);
 900                 g_free(element->ipv4.nameserver);
 901                 g_free(element->devname);
 902                 g_free(element->devpath);
 903                 g_free(element->path);
 904                 g_free(element->name);
 905                 g_free(element);
 906         }
 907 }
 908
 909 int connman_element_add_static_property(struct connman_element *element,
 910                                 const char *name, int type, const void *value)
 911 {
 912         struct connman_property *property;
 913
 914         DBG("element %p name %s", element, element->name);
 915
 916         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 917                 return -EINVAL;
 918
 919         property = g_try_new0(struct connman_property, 1);
 920         if (property == NULL)
 921                 return -ENOMEM;
 922
 923         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 924         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 925         property->name  = g_strdup(name);
 926         property->type  = type;
 927
 928         DBG("name %s type %d value %p", name, type, value);
 929
 930         switch (type) {
 931         case DBUS_TYPE_STRING:
 932                 property->value = g_strdup(*((const char **) value));
 933                 break;
 934         case DBUS_TYPE_BYTE:
 935                 property->value = g_try_malloc(1);
 936                 if (property->value != NULL)
 937                         memcpy(property->value, value, 1);
 938                 break;
 939         }
 940
 941         __connman_element_lock(element);
 942         element->properties = g_slist_append(element->properties, property);
 943         __connman_element_unlock(element);
 944
 945         return 0;
 946 }
 947
 948 static void emit_property_changed(DBusConnection *conn,
 949                                 struct connman_element *element,
 950                                 const char *name, int type, const void *data)
 951 {
 952         DBusMessage *signal;
 953         DBusMessageIter entry, value;
 954         const char *iface, *sig;
 955
 956         DBG("conn %p", conn);
 957
 958         switch (element->type) {
 959         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 960                 iface = CONNMAN_CONNECTION_INTERFACE;
 961                 break;
 962         default:
 963                 return;
 964         }
 965
 966         signal = dbus_message_new_signal(element->path,
 967                                                 iface, "PropertyChanged");
 968         if (signal == NULL)
 969                 return;
 970
 971         dbus_message_iter_init_append(signal, &entry);
 972
 973         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &name);
 974
 975         switch (type) {
 976         case DBUS_TYPE_STRING:
 977                 sig = DBUS_TYPE_STRING_AS_STRING;
 978                 break;
 979         case DBUS_TYPE_BYTE:
 980                 sig = DBUS_TYPE_BYTE_AS_STRING;
 981                 break;
 982         default:
 983                 sig = DBUS_TYPE_VARIANT_AS_STRING;
 984                 break;
 985         }
 986
 987         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 988                                                         sig, &value);
 989         dbus_message_iter_append_basic(&value, type, data);
 990         dbus_message_iter_close_container(&entry, &value);
 991
 992         g_dbus_send_message(conn, signal);
 993 }
 994
 995 int connman_element_set_static_property(struct connman_element *element,
 996                                 const char *name, int type, const void *value)
 997 {
 998         GSList *list;
 999
1000         DBG("element %p name %s", element, element->name);
1001
1002         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
1003                 return -EINVAL;
1004
1005         __connman_element_lock(element);
1006
1007         for (list = element->properties; list; list = list->next) {
1008                 struct connman_property *property = list->data;
1009
1010                 if (g_str_equal(property->name, name) == FALSE)
1011                         continue;
1012
1013                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1014                         continue;
1015
1016                 property->type = type;
1017                 g_free(property->value);
1018
1019                 switch (type) {
1020                 case DBUS_TYPE_STRING:
1021                         property->value = g_strdup(*((const char **) value));
1022                         break;
1023                 case DBUS_TYPE_BYTE:
1024                         property->value = g_try_malloc(1);
1025                         if (property->value != NULL)
1026                                 memcpy(property->value, value, 1);
1027                         break;
1028                 }
1029         }
1030
1031         __connman_element_unlock(element);
1032
1033         emit_property_changed(connection, element, name, type, value);
1034
1035         return 0;
1036 }
1037
1038 int connman_element_add_static_array_property(struct connman_element *element,
1039                         const char *name, int type, const void *value, int len)
1040 {
1041         struct connman_property *property;
1042
1043         DBG("element %p name %s", element, element->name);
1044
1045         if (type != DBUS_TYPE_BYTE)
1046                 return -EINVAL;
1047
1048         property = g_try_new0(struct connman_property, 1);
1049         if (property == NULL)
1050                 return -ENOMEM;
1051
1052         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
1053         property->id      = CONNMAN_PROPERTY_ID_INVALID;
1054         property->name    = g_strdup(name);
1055         property->type    = DBUS_TYPE_ARRAY;
1056         property->subtype = type;
1057
1058         DBG("name %s type %d value %p", name, type, value);
1059
1060         switch (type) {
1061         case DBUS_TYPE_BYTE:
1062                 property->value = g_try_malloc(len);
1063                 if (property->value != NULL) {
1064                         memcpy(property->value,
1065                                 *((const unsigned char **) value), len);
1066                         property->size = len;
1067                 }
1068                 break;
1069         }
1070
1071         __connman_element_lock(element);
1072         element->properties = g_slist_append(element->properties, property);
1073         __connman_element_unlock(element);
1074
1075         return 0;
1076 }
1077
1078 static void *get_reference_value(struct connman_element *element,
1079                                                 enum connman_property_id id)
1080 {
1081         GSList *list;
1082
1083         DBG("element %p name %s", element, element->name);
1084
1085         for (list = element->properties; list; list = list->next) {
1086                 struct connman_property *property = list->data;
1087
1088                 if (property->id != id)
1089                         continue;
1090
1091                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1092                         return property->value;
1093         }
1094
1095         if (element->parent == NULL)
1096                 return NULL;
1097
1098         return get_reference_value(element->parent, id);
1099 }
1100
1101 static void set_reference_properties(struct connman_element *element)
1102 {
1103         GSList *list;
1104
1105         DBG("element %p name %s", element, element->name);
1106
1107         for (list = element->properties; list; list = list->next) {
1108                 struct connman_property *property = list->data;
1109
1110                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1111                         continue;
1112
1113                 property->value = get_reference_value(element->parent,
1114                                                                 property->id);
1115         }
1116 }
1117
1118 static struct connman_property *create_property(struct connman_element *element,
1119                                                 enum connman_property_id id)
1120 {
1121         struct connman_property *property;
1122         GSList *list;
1123
1124         DBG("element %p name %s", element, element->name);
1125
1126         __connman_element_lock(element);
1127
1128         for (list = element->properties; list; list = list->next) {
1129                 property = list->data;
1130
1131                 if (property->id == id)
1132                         goto unlock;
1133         }
1134
1135         property = g_try_new0(struct connman_property, 1);
1136         if (property == NULL)
1137                 goto unlock;
1138
1139         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
1140         property->id    = id;
1141         property->name  = g_strdup(propid2name(id));
1142         property->type  = propid2type(id);
1143
1144         if (property->name == NULL) {
1145                 g_free(property);
1146                 property = NULL;
1147                 goto unlock;
1148         }
1149
1150         element->properties = g_slist_append(element->properties, property);
1151
1152 unlock:
1153         __connman_element_unlock(element);
1154
1155         return property;
1156 }
1157
1158 static void create_default_properties(struct connman_element *element)
1159 {
1160         struct connman_property *property;
1161         int i;
1162
1163         DBG("element %p name %s", element, element->name);
1164
1165         for (i = 0; propid_table[i].name; i++) {
1166                 DBG("property %s", propid_table[i].name);
1167
1168                 property = create_property(element, propid_table[i].id);
1169
1170                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
1171
1172                 if (propid_table[i].type != DBUS_TYPE_STRING)
1173                         continue;
1174
1175                 if (propid_table[i].value)
1176                         property->value = g_strdup(propid_table[i].value);
1177                 else
1178                         property->value = g_strdup("");
1179         }
1180 }
1181
1182 static int define_properties_valist(struct connman_element *element,
1183                                                                 va_list args)
1184 {
1185         enum connman_property_id id;
1186
1187         DBG("element %p name %s", element, element->name);
1188
1189         id = va_arg(args, enum connman_property_id);
1190
1191         while (id != CONNMAN_PROPERTY_ID_INVALID) {
1192
1193                 DBG("property %d", id);
1194
1195                 create_property(element, id);
1196
1197                 id = va_arg(args, enum connman_property_id);
1198         }
1199
1200         return 0;
1201 }
1202
1203 /**
1204  * connman_element_define_properties:
1205  * @element: an element
1206  * @varargs: list of property identifiers
1207  *
1208  * Define the valid properties for an element.
1209  *
1210  * Returns: %0 on success
1211  */
1212 int connman_element_define_properties(struct connman_element *element, ...)
1213 {
1214         va_list args;
1215         int err;
1216
1217         DBG("element %p name %s", element, element->name);
1218
1219         va_start(args, element);
1220
1221         err = define_properties_valist(element, args);
1222
1223         va_end(args);
1224
1225         return err;
1226 }
1227
1228 int connman_element_create_property(struct connman_element *element,
1229                                                 const char *name, int type)
1230 {
1231         return -EIO;
1232 }
1233
1234 int connman_element_set_property(struct connman_element *element,
1235                                 enum connman_property_id id, const void *value)
1236 {
1237         switch (id) {
1238         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1239                 __connman_element_lock(element);
1240                 g_free(element->ipv4.address);
1241                 element->ipv4.address = g_strdup(*((const char **) value));
1242                 __connman_element_unlock(element);
1243                 break;
1244         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1245                 __connman_element_lock(element);
1246                 g_free(element->ipv4.netmask);
1247                 element->ipv4.netmask = g_strdup(*((const char **) value));
1248                 __connman_element_unlock(element);
1249                 break;
1250         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1251                 __connman_element_lock(element);
1252                 g_free(element->ipv4.gateway);
1253                 element->ipv4.gateway = g_strdup(*((const char **) value));
1254                 __connman_element_unlock(element);
1255                 break;
1256         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1257                 __connman_element_lock(element);
1258                 g_free(element->ipv4.broadcast);
1259                 element->ipv4.broadcast = g_strdup(*((const char **) value));
1260                 __connman_element_unlock(element);
1261                 break;
1262         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1263                 __connman_element_lock(element);
1264                 g_free(element->ipv4.nameserver);
1265                 element->ipv4.nameserver = g_strdup(*((const char **) value));
1266                 __connman_element_unlock(element);
1267                 break;
1268         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1269                 __connman_element_lock(element);
1270                 g_free(element->wifi.security);
1271                 element->wifi.security = g_strdup(*((const char **) value));
1272                 __connman_element_unlock(element);
1273                 break;
1274         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1275                 __connman_element_lock(element);
1276                 g_free(element->wifi.passphrase);
1277                 element->wifi.passphrase = g_strdup(*((const char **) value));
1278                 __connman_element_unlock(element);
1279                 break;
1280         default:
1281                 return -EINVAL;
1282         }
1283
1284         return 0;
1285 }
1286
1287 int connman_element_get_value(struct connman_element *element,
1288                                 enum connman_property_id id, void *value)
1289 {
1290         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1291                 return -EINVAL;
1292
1293         switch (id) {
1294         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1295                 if (element->ipv4.address == NULL)
1296                         return connman_element_get_value(element->parent,
1297                                                                 id, value);
1298                 __connman_element_lock(element);
1299                 *((char **) value) = element->ipv4.address;
1300                 __connman_element_unlock(element);
1301                 break;
1302         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1303                 if (element->ipv4.netmask == NULL)
1304                         return connman_element_get_value(element->parent,
1305                                                                 id, value);
1306                 __connman_element_lock(element);
1307                 *((char **) value) = element->ipv4.netmask;
1308                 __connman_element_unlock(element);
1309                 break;
1310         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1311                 if (element->ipv4.gateway == NULL)
1312                         return connman_element_get_value(element->parent,
1313                                                                 id, value);
1314                 __connman_element_lock(element);
1315                 *((char **) value) = element->ipv4.gateway;
1316                 __connman_element_unlock(element);
1317                 break;
1318         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1319                 if (element->ipv4.broadcast == NULL)
1320                         return connman_element_get_value(element->parent,
1321                                                                 id, value);
1322                 __connman_element_lock(element);
1323                 *((char **) value) = element->ipv4.broadcast;
1324                 __connman_element_unlock(element);
1325                 break;
1326         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1327                 if (element->ipv4.nameserver == NULL)
1328                         return connman_element_get_value(element->parent,
1329                                                                 id, value);
1330                 __connman_element_lock(element);
1331                 *((char **) value) = element->ipv4.nameserver;
1332                 __connman_element_unlock(element);
1333                 break;
1334         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1335                 if (element->wifi.security == NULL)
1336                         return connman_element_get_value(element->parent,
1337                                                                 id, value);
1338                 __connman_element_lock(element);
1339                 *((char **) value) = element->wifi.security;
1340                 __connman_element_unlock(element);
1341                 break;
1342         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1343                 if (element->wifi.passphrase == NULL)
1344                         return connman_element_get_value(element->parent,
1345                                                                 id, value);
1346                 __connman_element_lock(element);
1347                 *((char **) value) = element->wifi.passphrase;
1348                 __connman_element_unlock(element);
1349                 break;
1350         default:
1351                 return -EINVAL;
1352         }
1353
1354         return 0;
1355 }
1356
1357 gboolean connman_element_get_static_property(struct connman_element *element,
1358                                                 const char *name, void *value)
1359 {
1360         GSList *list;
1361         gboolean found = FALSE;
1362
1363         DBG("element %p name %s", element, element->name);
1364
1365         __connman_element_lock(element);
1366
1367         for (list = element->properties; list; list = list->next) {
1368                 struct connman_property *property = list->data;
1369
1370                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1371                         continue;
1372
1373                 if (g_str_equal(property->name, name) == TRUE) {
1374                         switch (property->type) {
1375                         case DBUS_TYPE_STRING:
1376                                 *((char **) value) = property->value;
1377                                 found = TRUE;
1378                                 break;
1379                         }
1380                         break;
1381                 }
1382         }
1383
1384         __connman_element_unlock(element);
1385
1386         return found;
1387 }
1388
1389 gboolean connman_element_get_static_array_property(struct connman_element *element,
1390                                         const char *name, void *value, int *len)
1391 {
1392         GSList *list;
1393         gboolean found = FALSE;
1394
1395         DBG("element %p name %s", element, element->name);
1396
1397         __connman_element_lock(element);
1398
1399         for (list = element->properties; list; list = list->next) {
1400                 struct connman_property *property = list->data;
1401
1402                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1403                         continue;
1404
1405                 if (g_str_equal(property->name, name) == TRUE) {
1406                         *((char **) value) = property->value;
1407                         *len = property->size;
1408                         found = TRUE;
1409                         break;
1410                 }
1411         }
1412
1413         __connman_element_unlock(element);
1414
1415         return found;
1416 }
1417
1418 gboolean connman_element_match_static_property(struct connman_element *element,
1419                                         const char *name, const void *value)
1420 {
1421         GSList *list;
1422         gboolean result = FALSE;
1423
1424         DBG("element %p name %s", element, element->name);
1425
1426         __connman_element_lock(element);
1427
1428         for (list = element->properties; list; list = list->next) {
1429                 struct connman_property *property = list->data;
1430
1431                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1432                         continue;
1433
1434                 if (g_str_equal(property->name, name) == FALSE)
1435                         continue;
1436
1437                 if (property->type == DBUS_TYPE_STRING)
1438                         result = g_str_equal(property->value,
1439                                                 *((const char **) value));
1440
1441                 if (result == TRUE)
1442                         break;
1443         }
1444
1445         __connman_element_unlock(element);
1446
1447         return result;
1448 }
1449
1450 static void append_connections(DBusMessageIter *entry)
1451 {
1452         DBusMessageIter value, iter;
1453         const char *key = "Connections";
1454
1455         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1456
1457         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1458                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1459                                                                 &value);
1460
1461         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1462                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1463         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1464         dbus_message_iter_close_container(&value, &iter);
1465
1466         dbus_message_iter_close_container(entry, &value);
1467 }
1468
1469 static void emit_connections_signal(DBusConnection *conn)
1470 {
1471         DBusMessage *signal;
1472         DBusMessageIter entry;
1473
1474         DBG("conn %p", conn);
1475
1476         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1477                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1478         if (signal == NULL)
1479                 return;
1480
1481         dbus_message_iter_init_append(signal, &entry);
1482
1483         append_connections(&entry);
1484
1485         g_dbus_send_message(conn, signal);
1486 }
1487
1488 static void append_state(DBusMessageIter *entry, const char *state)
1489 {
1490         DBusMessageIter value;
1491         const char *key = "State";
1492
1493         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1494
1495         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1496                                         DBUS_TYPE_STRING_AS_STRING, &value);
1497         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1498         dbus_message_iter_close_container(entry, &value);
1499 }
1500
1501 static void emit_state_change(DBusConnection *conn, const char *state)
1502 {
1503         DBusMessage *signal;
1504         DBusMessageIter entry;
1505
1506         DBG("conn %p", conn);
1507
1508         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1509                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1510         if (signal == NULL)
1511                 return;
1512
1513         dbus_message_iter_init_append(signal, &entry);
1514
1515         append_state(&entry, state);
1516
1517         g_dbus_send_message(conn, signal);
1518 }
1519
1520 static void set_signal_strength(struct connman_element *connection)
1521 {
1522         struct connman_element *element = connection;
1523
1524         while (element != NULL) {
1525                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1526                         connection->strength = element->strength;
1527                         break;
1528                 }
1529
1530                 element = element->parent;
1531         }
1532 }
1533
1534 static void probe_element(struct connman_element *element)
1535 {
1536         GSList *list;
1537
1538         DBG("element %p name %s", element, element->name);
1539
1540         for (list = driver_list; list; list = list->next) {
1541                 struct connman_driver *driver = list->data;
1542
1543                 if (match_driver(element, driver) == FALSE)
1544                         continue;
1545
1546                 DBG("driver %p name %s", driver, driver->name);
1547
1548                 if (driver->probe(element) == 0) {
1549                         __connman_element_lock(element);
1550                         element->driver = driver;
1551                         __connman_element_unlock(element);
1552
1553                         enable_element(element);
1554                         break;
1555                 }
1556         }
1557 }
1558
1559 static void register_element(gpointer data, gpointer user_data)
1560 {
1561         struct connman_element *element = data;
1562         const gchar *basepath;
1563         GNode *node;
1564
1565         __connman_element_lock(element);
1566
1567         if (element->parent) {
1568                 node = g_node_find(element_root, G_PRE_ORDER,
1569                                         G_TRAVERSE_ALL, element->parent);
1570                 basepath = element->parent->path;
1571
1572                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
1573                         element->subtype = element->parent->subtype;
1574         } else {
1575                 element->parent = element_root->data;
1576
1577                 node = element_root;
1578                 basepath = "";
1579         }
1580
1581         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1582
1583         set_reference_properties(element);
1584
1585         __connman_element_unlock(element);
1586
1587         DBG("element %p path %s", element, element->path);
1588
1589         g_node_append_data(node, element);
1590
1591         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1592                 if (g_dbus_register_interface(connection, element->path,
1593                                         CONNMAN_CONNECTION_INTERFACE,
1594                                         connection_methods, element_signals,
1595                                         NULL, element, NULL) == FALSE)
1596                         connman_error("Failed to register %s connection",
1597                                                                 element->path);
1598                 else {
1599                         set_signal_strength(element);
1600                         emit_connections_signal(connection);
1601                         emit_state_change(connection, "online");
1602                 }
1603         }
1604
1605         emit_element_signal(connection, "ElementAdded", element);
1606
1607         if (started == FALSE)
1608                 return;
1609
1610         probe_element(element);
1611 }
1612
1613 /**
1614  * connman_element_register:
1615  * @element: the element to register
1616  * @parent: the parent to register the element with
1617  *
1618  * Register an element with the core. It will be register under the given
1619  * parent of if %NULL is provided under the root element.
1620  *
1621  * Returns: %0 on success
1622  */
1623 int connman_element_register(struct connman_element *element,
1624                                         struct connman_element *parent)
1625 {
1626         DBG("element %p name %s parent %p", element, element->name, parent);
1627
1628         if (element->devname == NULL)
1629                 element->devname = g_strdup(element->name);
1630
1631         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1632                 if (g_pattern_match_simple(device_filter,
1633                                                 element->devname) == FALSE) {
1634                         DBG("ignoring %s [%s] device", element->name,
1635                                                         element->devname);
1636                         return -EPERM;
1637                 }
1638         }
1639
1640         if (connman_element_ref(element) == NULL)
1641                 return -EINVAL;
1642
1643         __connman_element_lock(element);
1644
1645         if (element->name == NULL) {
1646                 element->name = g_strdup(type2string(element->type));
1647                 if (element->name == NULL) {
1648                         __connman_element_unlock(element);
1649                         return -EINVAL;
1650                 }
1651         }
1652
1653         element->parent = parent;
1654
1655         __connman_element_unlock(element);
1656
1657         register_element(element, NULL);
1658
1659         return 0;
1660 }
1661
1662 static gboolean remove_element(GNode *node, gpointer user_data)
1663 {
1664         struct connman_element *element = node->data;
1665         struct connman_element *root = user_data;
1666
1667         DBG("element %p name %s", element, element->name);
1668
1669         if (element == root)
1670                 return FALSE;
1671
1672         if (node != NULL)
1673                 g_node_unlink(node);
1674
1675         if (element->driver) {
1676                 disable_element(element);
1677
1678                 if (element->driver->remove)
1679                         element->driver->remove(element);
1680
1681                 __connman_element_lock(element);
1682                 element->driver = NULL;
1683                 __connman_element_unlock(element);
1684         }
1685
1686         if (node != NULL)
1687                 g_node_destroy(node);
1688
1689         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1690                 if (__connman_element_count(NULL,
1691                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1692                         emit_state_change(connection, "offline");
1693                 emit_connections_signal(connection);
1694
1695                 g_dbus_unregister_interface(connection, element->path,
1696                                                 CONNMAN_CONNECTION_INTERFACE);
1697         }
1698
1699         emit_element_signal(connection, "ElementRemoved", element);
1700
1701         connman_element_unref(element);
1702
1703         return FALSE;
1704 }
1705
1706 void connman_element_unregister(struct connman_element *element)
1707 {
1708         GNode *node;
1709
1710         DBG("element %p name %s", element, element->name);
1711
1712         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1713
1714         if (node != NULL)
1715                 g_node_traverse(node, G_POST_ORDER,
1716                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1717 }
1718
1719 void connman_element_unregister_children(struct connman_element *element)
1720 {
1721         GNode *node;
1722
1723         DBG("element %p name %s", element, element->name);
1724
1725         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1726
1727         if (node != NULL)
1728                 g_node_traverse(node, G_POST_ORDER,
1729                                 G_TRAVERSE_ALL, -1, remove_element, element);
1730 }
1731
1732 static gboolean update_element(GNode *node, gpointer user_data)
1733 {
1734         struct connman_element *element = node->data;
1735         struct connman_element *root = user_data;
1736
1737         DBG("element %p name %s", element, element->name);
1738
1739         if (element->driver && element->driver->update)
1740                 element->driver->update(element);
1741
1742         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1743                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1744                 if (element->strength != root->strength) {
1745                         element->strength = root->strength;
1746                         emit_property_changed(connection, element, "Strength",
1747                                         DBUS_TYPE_BYTE, &element->strength);
1748                 }
1749         }
1750
1751         emit_element_signal(connection, "ElementUpdated", element);
1752
1753         return FALSE;
1754 }
1755
1756 void connman_element_update(struct connman_element *element)
1757 {
1758         GNode *node;
1759
1760         DBG("element %p name %s", element, element->name);
1761
1762         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1763
1764         if (node != NULL)
1765                 g_node_traverse(node, G_PRE_ORDER,
1766                                 G_TRAVERSE_ALL, -1, update_element, element);
1767 }
1768
1769 int connman_element_set_enabled(struct connman_element *element,
1770                                                         gboolean enabled)
1771 {
1772         if (element->enabled == enabled)
1773                 return 0;
1774
1775         element->enabled = enabled;
1776
1777         emit_enabled_signal(connection, element);
1778
1779         return 0;
1780 }
1781
1782 int __connman_element_init(DBusConnection *conn, const char *device)
1783 {
1784         struct connman_element *element;
1785
1786         DBG("conn %p", conn);
1787
1788         connection = dbus_connection_ref(conn);
1789         if (connection == NULL)
1790                 return -EIO;
1791
1792         device_filter = g_strdup(device);
1793
1794         element = connman_element_create("root");
1795
1796         element->path = g_strdup("/");
1797         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1798
1799         create_default_properties(element);
1800
1801         element_root = g_node_new(element);
1802
1803         __connman_device_init();
1804         __connman_network_init();
1805         __connman_connection_init();
1806
1807         return 0;
1808 }
1809
1810 static gboolean probe_node(GNode *node, gpointer data)
1811 {
1812         struct connman_element *element = node->data;
1813
1814         DBG("element %p name %s", element, element->name);
1815
1816         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1817                 return FALSE;
1818
1819         if (element->driver)
1820                 return FALSE;
1821
1822         probe_element(element);
1823
1824         return FALSE;
1825 }
1826
1827 void __connman_element_start(void)
1828 {
1829         DBG("");
1830
1831         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1832                                                         probe_node, NULL);
1833
1834         started = TRUE;
1835
1836         __connman_detect_init();
1837 }
1838
1839 void __connman_element_stop(void)
1840 {
1841         DBG("");
1842
1843         __connman_detect_cleanup();
1844 }
1845
1846 static gboolean free_driver(GNode *node, gpointer data)
1847 {
1848         struct connman_element *element = node->data;
1849
1850         DBG("element %p name %s", element, element->name);
1851
1852         if (element->driver) {
1853                 disable_element(element);
1854
1855                 if (element->driver->remove)
1856                         element->driver->remove(element);
1857
1858                 __connman_element_lock(element);
1859                 element->driver = NULL;
1860                 __connman_element_unlock(element);
1861         }
1862
1863         return FALSE;
1864 }
1865
1866 static gboolean free_node(GNode *node, gpointer data)
1867 {
1868         struct connman_element *element = node->data;
1869
1870         DBG("element %p name %s", element, element->name);
1871
1872         if (g_node_depth(node) > 1)
1873                 connman_element_unregister(element);
1874
1875         return FALSE;
1876 }
1877
1878 void __connman_element_cleanup(void)
1879 {
1880         DBG("");
1881
1882         __connman_connection_cleanup();
1883         __connman_network_cleanup();
1884         __connman_device_cleanup();
1885
1886         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1887                                                         free_driver, NULL);
1888
1889         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1890                                                         free_node, NULL);
1891
1892         g_node_destroy(element_root);
1893         element_root = NULL;
1894
1895         g_free(device_filter);
1896
1897         dbus_connection_unref(connection);
1898 }