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 static void set_common_property(struct connman_element *element,
 282                                 const char *name, DBusMessageIter *value)
 283 {
 284         GSList *list;
 285
 286         if (g_str_equal(name, "Priority") == TRUE) {
 287                 dbus_message_iter_get_basic(value, &element->priority);
 288                 return;
 289         }
 290
 291         __connman_element_lock(element);
 292
 293         for (list = element->properties; list; list = list->next) {
 294                 struct connman_property *property = list->data;
 295                 const char *str;
 296
 297                 if (g_str_equal(property->name, name) == FALSE)
 298                         continue;
 299
 300                 if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)
 301                         continue;
 302
 303                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 304
 305                 if (property->type == DBUS_TYPE_STRING) {
 306                         dbus_message_iter_get_basic(value, &str);
 307                         g_free(property->value);
 308                         property->value = g_strdup(str);
 309                 } else
 310                         property->value = NULL;
 311         }
 312
 313         __connman_element_unlock(element);
 314 }
 315
 316 static void emit_element_signal(DBusConnection *conn, const char *member,
 317                                         struct connman_element *element)
 318 {
 319         DBusMessage *signal;
 320
 321         if (__connman_debug_enabled() == FALSE)
 322                 return;
 323
 324         DBG("conn %p member %s", conn, member);
 325
 326         if (element == NULL)
 327                 return;
 328
 329         signal = dbus_message_new_signal(element->path,
 330                                         CONNMAN_DEBUG_INTERFACE, member);
 331         if (signal == NULL)
 332                 return;
 333
 334         g_dbus_send_message(conn, signal);
 335 }
 336
 337 static void emit_enabled_signal(DBusConnection *conn,
 338                                         struct connman_element *element)
 339 {
 340         DBusMessage *signal;
 341         DBusMessageIter entry, value;
 342         const char *iface, *key;
 343
 344         DBG("conn %p", conn);
 345
 346         if (element == NULL)
 347                 return;
 348
 349         switch (element->type) {
 350         case CONNMAN_ELEMENT_TYPE_DEVICE:
 351                 iface = CONNMAN_DEVICE_INTERFACE;
 352                 key = "Powered";
 353                 break;
 354         case CONNMAN_ELEMENT_TYPE_NETWORK:
 355                 iface = CONNMAN_NETWORK_INTERFACE;
 356                 key = "Connected";
 357                 break;
 358         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 359                 iface = CONNMAN_CONNECTION_INTERFACE;
 360                 key = "Default";
 361                 break;
 362         default:
 363                 return;
 364         }
 365
 366         signal = dbus_message_new_signal(element->path,
 367                                                 iface, "PropertyChanged");
 368         if (signal == NULL)
 369                 return;
 370
 371         dbus_message_iter_init_append(signal, &entry);
 372
 373         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 374
 375         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 376                                         DBUS_TYPE_BOOLEAN_AS_STRING, &value);
 377         dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN,
 378                                                         &element->enabled);
 379         dbus_message_iter_close_container(&entry, &value);
 380
 381         g_dbus_send_message(conn, signal);
 382 }
 383
 384 static void emit_scanning_signal(DBusConnection *conn,
 385                                         struct connman_element *element)
 386 {
 387         DBusMessage *signal;
 388         DBusMessageIter entry, value;
 389         const char *key = "Scanning";
 390
 391         DBG("conn %p", conn);
 392
 393         if (element == NULL)
 394                 return;
 395
 396         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 397                 return;
 398
 399         signal = dbus_message_new_signal(element->path,
 400                                 CONNMAN_DEVICE_INTERFACE, "PropertyChanged");
 401         if (signal == NULL)
 402                 return;
 403
 404         dbus_message_iter_init_append(signal, &entry);
 405
 406         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 407
 408         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 409                                         DBUS_TYPE_BOOLEAN_AS_STRING, &value);
 410         dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN,
 411                                                         &element->scanning);
 412         dbus_message_iter_close_container(&entry, &value);
 413
 414         g_dbus_send_message(conn, signal);
 415 }
 416
 417 static DBusMessage *do_enable(DBusConnection *conn,
 418                                         DBusMessage *msg, void *data)
 419 {
 420         struct connman_element *element = data;
 421
 422         DBG("conn %p", conn);
 423
 424         if (element->enabled == TRUE)
 425                 return __connman_error_failed(msg);
 426
 427         if (element->driver && element->driver->enable) {
 428                 DBG("Calling enable callback");
 429                 if (element->driver->enable(element) < 0)
 430                         return __connman_error_failed(msg);
 431         }
 432
 433         element->enabled = TRUE;
 434
 435         emit_enabled_signal(connection, element);
 436
 437         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 438 }
 439
 440 static DBusMessage *do_disable(DBusConnection *conn,
 441                                         DBusMessage *msg, void *data)
 442 {
 443         struct connman_element *element = data;
 444
 445         DBG("conn %p", conn);
 446
 447         if (element->enabled == FALSE)
 448                 return __connman_error_failed(msg);
 449
 450         if (element->driver && element->driver->disable) {
 451                 DBG("Calling disable callback");
 452                 if (element->driver->disable(element) < 0)
 453                         return __connman_error_failed(msg);
 454         }
 455
 456         element->enabled = FALSE;
 457
 458         emit_enabled_signal(connection, element);
 459
 460         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 461 }
 462
 463 static DBusMessage *network_get_properties(DBusConnection *conn,
 464                                         DBusMessage *msg, void *data)
 465 {
 466         struct connman_element *element = data;
 467         DBusMessage *reply;
 468         DBusMessageIter array, dict;
 469
 470         DBG("conn %p", conn);
 471
 472         reply = dbus_message_new_method_return(msg);
 473         if (reply == NULL)
 474                 return NULL;
 475
 476         dbus_message_iter_init_append(reply, &array);
 477
 478         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 479                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 480                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 481                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 482
 483         if (element->parent)
 484                 connman_dbus_dict_append_variant(&dict, "Device",
 485                                 DBUS_TYPE_OBJECT_PATH, &element->parent->path);
 486
 487         connman_dbus_dict_append_variant(&dict, "Available",
 488                                         DBUS_TYPE_BOOLEAN, &element->available);
 489
 490         connman_dbus_dict_append_variant(&dict, "Connected",
 491                                         DBUS_TYPE_BOOLEAN, &element->enabled);
 492
 493         connman_dbus_dict_append_variant(&dict, "Remember",
 494                                         DBUS_TYPE_BOOLEAN, &element->remember);
 495
 496         add_common_properties(element, &dict);
 497
 498         dbus_message_iter_close_container(&array, &dict);
 499
 500         return reply;
 501 }
 502
 503 static DBusMessage *network_set_property(DBusConnection *conn,
 504                                         DBusMessage *msg, void *data)
 505 {
 506         struct connman_element *element = data;
 507         DBusMessageIter iter;
 508         DBusMessageIter value;
 509         const char *name;
 510
 511         DBG("conn %p", conn);
 512
 513         if (dbus_message_iter_init(msg, &iter) == FALSE)
 514                 return __connman_error_invalid_arguments(msg);
 515
 516         dbus_message_iter_get_basic(&iter, &name);
 517         dbus_message_iter_next(&iter);
 518         dbus_message_iter_recurse(&iter, &value);
 519
 520         if (__connman_security_check_privileges(msg) < 0)
 521                 return __connman_error_permission_denied(msg);
 522
 523         if (g_str_equal(name, "Remember") == TRUE) {
 524                 dbus_message_iter_get_basic(&value, &element->remember);
 525         } else if (g_str_equal(name, "WiFi.Passphrase") == TRUE) {
 526                 const char *str;
 527
 528                 dbus_message_iter_get_basic(&value, &str);
 529                 g_free(element->wifi.passphrase);
 530                 element->wifi.passphrase = g_strdup(str);
 531         } else
 532                 set_common_property(element, name, &value);
 533
 534         __connman_element_store(element);
 535
 536         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 537 }
 538
 539 static DBusMessage *connection_get_properties(DBusConnection *conn,
 540                                         DBusMessage *msg, void *data)
 541 {
 542         struct connman_element *element = data;
 543         DBusMessage *reply;
 544         DBusMessageIter array, dict;
 545         const char *str;
 546
 547         DBG("conn %p", conn);
 548
 549         reply = dbus_message_new_method_return(msg);
 550         if (reply == NULL)
 551                 return NULL;
 552
 553         dbus_message_iter_init_append(reply, &array);
 554
 555         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 556                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 557                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 558                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 559
 560         str = subtype2string(element->subtype);
 561         if (str != NULL)
 562                 connman_dbus_dict_append_variant(&dict, "Type",
 563                                                 DBUS_TYPE_STRING, &str);
 564
 565         if (element->devname != NULL)
 566                 connman_dbus_dict_append_variant(&dict, "Interface",
 567                                         DBUS_TYPE_STRING, &element->devname);
 568
 569         if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIFI ||
 570                         element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIMAX)
 571                 connman_dbus_dict_append_variant(&dict, "Strength",
 572                                         DBUS_TYPE_BYTE, &element->strength);
 573
 574         connman_dbus_dict_append_variant(&dict, "Default",
 575                                         DBUS_TYPE_BOOLEAN, &element->enabled);
 576
 577         add_common_properties(element, &dict);
 578
 579         dbus_message_iter_close_container(&array, &dict);
 580
 581         return reply;
 582 }
 583
 584 static DBusMessage *connection_set_property(DBusConnection *conn,
 585                                         DBusMessage *msg, void *data)
 586 {
 587         struct connman_element *element = data;
 588         DBusMessageIter iter, value;
 589         const char *name;
 590
 591         DBG("conn %p", conn);
 592
 593         if (dbus_message_iter_init(msg, &iter) == FALSE)
 594                 return __connman_error_invalid_arguments(msg);
 595
 596         dbus_message_iter_get_basic(&iter, &name);
 597         dbus_message_iter_next(&iter);
 598         dbus_message_iter_recurse(&iter, &value);
 599
 600         if (__connman_security_check_privileges(msg) < 0)
 601                 return __connman_error_permission_denied(msg);
 602
 603         if (g_str_equal(name, "Default") == TRUE) {
 604                 dbus_bool_t enabled;
 605
 606                 dbus_message_iter_get_basic(&value, &enabled);
 607
 608                 if (enabled == TRUE)
 609                         return do_enable(conn, msg, element);
 610                 else
 611                         return do_disable(conn, msg, element);
 612         }
 613
 614         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 615 }
 616
 617 static GDBusMethodTable network_methods[] = {
 618         { "GetProperties", "",   "a{sv}", network_get_properties },
 619         { "SetProperty",   "sv", "",      network_set_property   },
 620         { "Connect",       "",   "",      do_enable              },
 621         { "Disconnect",    "",   "",      do_disable             },
 622         { },
 623 };
 624
 625 static GDBusMethodTable connection_methods[] = {
 626         { "GetProperties", "",   "a{sv}", connection_get_properties },
 627         { "SetProperty",   "sv", "",      connection_set_property   },
 628         { },
 629 };
 630
 631 static GDBusSignalTable element_signals[] = {
 632         { "PropertyChanged", "sv" },
 633         { },
 634 };
 635
 636 struct foreach_data {
 637         enum connman_element_type type;
 638         element_cb_t callback;
 639         gpointer user_data;
 640 };
 641
 642 static gboolean foreach_callback(GNode *node, gpointer user_data)
 643 {
 644         struct connman_element *element = node->data;
 645         struct foreach_data *data = user_data;
 646
 647         DBG("element %p name %s", element, element->name);
 648
 649         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 650                 return FALSE;
 651
 652         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 653                                         data->type != element->type)
 654                 return FALSE;
 655
 656         if (data->callback)
 657                 data->callback(element, data->user_data);
 658
 659         return FALSE;
 660 }
 661
 662 void __connman_element_foreach(struct connman_element *element,
 663                                 enum connman_element_type type,
 664                                 element_cb_t callback, gpointer user_data)
 665 {
 666         struct foreach_data data = { type, callback, user_data };
 667         GNode *node;
 668
 669         DBG("");
 670
 671         if (element != NULL) {
 672                 node = g_node_find(element_root, G_PRE_ORDER,
 673                                                 G_TRAVERSE_ALL, element);
 674                 if (node == NULL)
 675                         return;
 676         } else
 677                 node = element_root;
 678
 679         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 680                                                 foreach_callback, &data);
 681 }
 682
 683 struct append_filter {
 684         enum connman_element_type type;
 685         DBusMessageIter *iter;
 686 };
 687
 688 static gboolean append_path(GNode *node, gpointer user_data)
 689 {
 690         struct connman_element *element = node->data;
 691         struct append_filter *filter = user_data;
 692
 693         DBG("element %p name %s", element, element->name);
 694
 695         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 696                 return FALSE;
 697
 698         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 699                                         filter->type != element->type)
 700                 return FALSE;
 701
 702         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 703                         __connman_device_has_driver(element->device) == FALSE)
 704                 return FALSE;
 705
 706         dbus_message_iter_append_basic(filter->iter,
 707                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 708
 709         return FALSE;
 710 }
 711
 712 void __connman_element_list(struct connman_element *element,
 713                                         enum connman_element_type type,
 714                                                         DBusMessageIter *iter)
 715 {
 716         struct append_filter filter = { type, iter };
 717         GNode *node;
 718
 719         DBG("");
 720
 721         if (element != NULL) {
 722                 node = g_node_find(element_root, G_PRE_ORDER,
 723                                                 G_TRAVERSE_ALL, element);
 724                 if (node == NULL)
 725                         return;
 726         } else
 727                 node = element_root;
 728
 729         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 730                                                 append_path, &filter);
 731 }
 732
 733 struct count_data {
 734         enum connman_element_type type;
 735         int count;
 736 };
 737
 738 static gboolean count_element(GNode *node, gpointer user_data)
 739 {
 740         struct connman_element *element = node->data;
 741         struct count_data *data = user_data;
 742
 743         DBG("element %p name %s", element, element->name);
 744
 745         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 746                 return FALSE;
 747
 748         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 749                                         data->type != element->type)
 750                 return FALSE;
 751
 752         data->count++;
 753
 754         return FALSE;
 755 }
 756
 757 int __connman_element_count(struct connman_element *element,
 758                                         enum connman_element_type type)
 759 {
 760         struct count_data data = { type, 0 };
 761         GNode *node;
 762
 763         DBG("");
 764
 765         if (element != NULL) {
 766                 node = g_node_find(element_root, G_PRE_ORDER,
 767                                                 G_TRAVERSE_ALL, element);
 768                 if (node == NULL)
 769                         return 0;
 770         } else
 771                 node = element_root;
 772
 773         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 774                                                 count_element, &data);
 775
 776         return data.count;
 777 }
 778
 779 static gint compare_priority(gconstpointer a, gconstpointer b)
 780 {
 781         const struct connman_driver *driver1 = a;
 782         const struct connman_driver *driver2 = b;
 783
 784         return driver2->priority - driver1->priority;
 785 }
 786
 787 static gboolean match_driver(struct connman_element *element,
 788                                         struct connman_driver *driver)
 789 {
 790         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 791                 return FALSE;
 792
 793         if (element->type != driver->type &&
 794                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 795                 return FALSE;
 796
 797         if (element->subtype == driver->subtype ||
 798                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 799                 return TRUE;
 800
 801         return FALSE;
 802 }
 803
 804 static void enable_element(struct connman_element *element)
 805 {
 806         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 807                 return;
 808
 809         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 810                 return;
 811
 812         if (element->driver && element->driver->enable) {
 813                 if (element->driver->enable(element) == 0) {
 814                         element->enabled = TRUE;
 815                         emit_enabled_signal(connection, element);
 816                 }
 817         }
 818 }
 819
 820 static gboolean probe_driver(GNode *node, gpointer data)
 821 {
 822         struct connman_element *element = node->data;
 823         struct connman_driver *driver = data;
 824
 825         DBG("element %p name %s", element, element->name);
 826
 827         if (!element->driver && match_driver(element, driver) == TRUE) {
 828                 if (driver->probe(element) < 0)
 829                         return FALSE;
 830
 831                 __connman_element_lock(element);
 832                 element->driver = driver;
 833                 __connman_element_unlock(element);
 834
 835                 enable_element(element);
 836         }
 837
 838         return FALSE;
 839 }
 840
 841 void __connman_driver_rescan(struct connman_driver *driver)
 842 {
 843         DBG("driver %p name %s", driver, driver->name);
 844
 845         if (!driver->probe)
 846                 return;
 847
 848         if (element_root != NULL)
 849                 g_node_traverse(element_root, G_PRE_ORDER,
 850                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 851 }
 852
 853 /**
 854  * connman_driver_register:
 855  * @driver: driver definition
 856  *
 857  * Register a new driver
 858  *
 859  * Returns: %0 on success
 860  */
 861 int connman_driver_register(struct connman_driver *driver)
 862 {
 863         DBG("driver %p name %s", driver, driver->name);
 864
 865         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 866                 return -EINVAL;
 867
 868         if (!driver->probe)
 869                 return -EINVAL;
 870
 871         driver_list = g_slist_insert_sorted(driver_list, driver,
 872                                                         compare_priority);
 873
 874         if (started == FALSE)
 875                 return 0;
 876
 877         if (element_root != NULL)
 878                 g_node_traverse(element_root, G_PRE_ORDER,
 879                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 880
 881         return 0;
 882 }
 883
 884 static void disable_element(struct connman_element *element)
 885 {
 886         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 887                 return;
 888
 889         if (element->enabled == FALSE)
 890                 return;
 891
 892         if (element->driver && element->driver->disable) {
 893                 if (element->driver->disable(element) == 0) {
 894                         element->enabled = FALSE;
 895                         emit_enabled_signal(connection, element);
 896                 }
 897         }
 898 }
 899
 900 static gboolean remove_driver(GNode *node, gpointer data)
 901 {
 902         struct connman_element *element = node->data;
 903         struct connman_driver *driver = data;
 904
 905         DBG("element %p name %s", element, element->name);
 906
 907         if (element->driver == driver) {
 908                 disable_element(element);
 909
 910                 if (driver->remove)
 911                         driver->remove(element);
 912
 913                 __connman_element_lock(element);
 914                 element->driver = NULL;
 915                 __connman_element_unlock(element);
 916         }
 917
 918         return FALSE;
 919 }
 920
 921 /**
 922  * connman_driver_unregister:
 923  * @driver: driver definition
 924  *
 925  * Remove a previously registered driver
 926  */
 927 void connman_driver_unregister(struct connman_driver *driver)
 928 {
 929         DBG("driver %p name %s", driver, driver->name);
 930
 931         driver_list = g_slist_remove(driver_list, driver);
 932
 933         if (element_root != NULL)
 934                 g_node_traverse(element_root, G_POST_ORDER,
 935                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 936 }
 937
 938 /**
 939  * connman_element_create:
 940  * @name: element name
 941  *
 942  * Allocate a new element and assign the given #name to it. If the name
 943  * is #NULL, it will be later on created based on the element type.
 944  *
 945  * Returns: a newly-allocated #connman_element structure
 946  */
 947 struct connman_element *connman_element_create(const char *name)
 948 {
 949         struct connman_element *element;
 950
 951         element = g_try_new0(struct connman_element, 1);
 952         if (element == NULL)
 953                 return NULL;
 954
 955         DBG("element %p", element);
 956
 957         element->refcount = 1;
 958
 959         element->name    = g_strdup(name);
 960         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 961         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 962         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 963         element->policy  = CONNMAN_ELEMENT_POLICY_AUTO;
 964         element->index   = -1;
 965         element->enabled = FALSE;
 966
 967         return element;
 968 }
 969
 970 struct connman_element *connman_element_ref(struct connman_element *element)
 971 {
 972         DBG("element %p name %s refcount %d", element, element->name,
 973                                 g_atomic_int_get(&element->refcount) + 1);
 974
 975         g_atomic_int_inc(&element->refcount);
 976
 977         return element;
 978 }
 979
 980 static void free_properties(struct connman_element *element)
 981 {
 982         GSList *list;
 983
 984         DBG("element %p name %s", element, element->name);
 985
 986         __connman_element_lock(element);
 987
 988         for (list = element->properties; list; list = list->next) {
 989                 struct connman_property *property = list->data;
 990
 991                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 992                         g_free(property->value);
 993
 994                 g_free(property->name);
 995                 g_free(property);
 996         }
 997
 998         g_slist_free(element->properties);
 999
1000         element->properties = NULL;
1001
1002         __connman_element_unlock(element);
1003 }
1004
1005 void connman_element_unref(struct connman_element *element)
1006 {
1007         DBG("element %p name %s refcount %d", element, element->name,
1008                                 g_atomic_int_get(&element->refcount) - 1);
1009
1010         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
1011                 if (element->destruct)
1012                         element->destruct(element);
1013                 free_properties(element);
1014                 g_free(element->ipv4.address);
1015                 g_free(element->ipv4.netmask);
1016                 g_free(element->ipv4.gateway);
1017                 g_free(element->ipv4.network);
1018                 g_free(element->ipv4.broadcast);
1019                 g_free(element->ipv4.nameserver);
1020                 g_free(element->devname);
1021                 g_free(element->devpath);
1022                 g_free(element->path);
1023                 g_free(element->name);
1024                 g_free(element);
1025         }
1026 }
1027
1028 int connman_element_add_static_property(struct connman_element *element,
1029                                 const char *name, int type, const void *value)
1030 {
1031         struct connman_property *property;
1032
1033         DBG("element %p name %s", element, element->name);
1034
1035         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
1036                 return -EINVAL;
1037
1038         property = g_try_new0(struct connman_property, 1);
1039         if (property == NULL)
1040                 return -ENOMEM;
1041
1042         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
1043         property->id    = CONNMAN_PROPERTY_ID_INVALID;
1044         property->name  = g_strdup(name);
1045         property->type  = type;
1046
1047         DBG("name %s type %d value %p", name, type, value);
1048
1049         switch (type) {
1050         case DBUS_TYPE_STRING:
1051                 property->value = g_strdup(*((const char **) value));
1052                 break;
1053         case DBUS_TYPE_BYTE:
1054                 property->value = g_try_malloc(1);
1055                 if (property->value != NULL)
1056                         memcpy(property->value, value, 1);
1057                 break;
1058         }
1059
1060         __connman_element_lock(element);
1061         element->properties = g_slist_append(element->properties, property);
1062         __connman_element_unlock(element);
1063
1064         return 0;
1065 }
1066
1067 static void emit_property_changed(DBusConnection *conn,
1068                                 struct connman_element *element,
1069                                 const char *name, int type, const void *data)
1070 {
1071         DBusMessage *signal;
1072         DBusMessageIter entry, value;
1073         const char *iface, *sig;
1074
1075         DBG("conn %p", conn);
1076
1077         switch (element->type) {
1078         case CONNMAN_ELEMENT_TYPE_DEVICE:
1079                 iface = CONNMAN_DEVICE_INTERFACE;
1080                 break;
1081         case CONNMAN_ELEMENT_TYPE_NETWORK:
1082                 iface = CONNMAN_NETWORK_INTERFACE;
1083                 break;
1084         case CONNMAN_ELEMENT_TYPE_CONNECTION:
1085                 iface = CONNMAN_CONNECTION_INTERFACE;
1086                 break;
1087         default:
1088                 return;
1089         }
1090
1091         signal = dbus_message_new_signal(element->path,
1092                                                 iface, "PropertyChanged");
1093         if (signal == NULL)
1094                 return;
1095
1096         dbus_message_iter_init_append(signal, &entry);
1097
1098         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &name);
1099
1100         switch (type) {
1101         case DBUS_TYPE_STRING:
1102                 sig = DBUS_TYPE_STRING_AS_STRING;
1103                 break;
1104         case DBUS_TYPE_BYTE:
1105                 sig = DBUS_TYPE_BYTE_AS_STRING;
1106                 break;
1107         default:
1108                 sig = DBUS_TYPE_VARIANT_AS_STRING;
1109                 break;
1110         }
1111
1112         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
1113                                                         sig, &value);
1114         dbus_message_iter_append_basic(&value, type, data);
1115         dbus_message_iter_close_container(&entry, &value);
1116
1117         g_dbus_send_message(conn, signal);
1118 }
1119
1120 int connman_element_set_static_property(struct connman_element *element,
1121                                 const char *name, int type, const void *value)
1122 {
1123         GSList *list;
1124
1125         DBG("element %p name %s", element, element->name);
1126
1127         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
1128                 return -EINVAL;
1129
1130         __connman_element_lock(element);
1131
1132         for (list = element->properties; list; list = list->next) {
1133                 struct connman_property *property = list->data;
1134
1135                 if (g_str_equal(property->name, name) == FALSE)
1136                         continue;
1137
1138                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1139                         continue;
1140
1141                 property->type = type;
1142                 g_free(property->value);
1143
1144                 switch (type) {
1145                 case DBUS_TYPE_STRING:
1146                         property->value = g_strdup(*((const char **) value));
1147                         break;
1148                 case DBUS_TYPE_BYTE:
1149                         property->value = g_try_malloc(1);
1150                         if (property->value != NULL)
1151                                 memcpy(property->value, value, 1);
1152                         break;
1153                 }
1154         }
1155
1156         __connman_element_unlock(element);
1157
1158         emit_property_changed(connection, element, name, type, value);
1159
1160         return 0;
1161 }
1162
1163 int connman_element_add_static_array_property(struct connman_element *element,
1164                         const char *name, int type, const void *value, int len)
1165 {
1166         struct connman_property *property;
1167
1168         DBG("element %p name %s", element, element->name);
1169
1170         if (type != DBUS_TYPE_BYTE)
1171                 return -EINVAL;
1172
1173         property = g_try_new0(struct connman_property, 1);
1174         if (property == NULL)
1175                 return -ENOMEM;
1176
1177         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
1178         property->id      = CONNMAN_PROPERTY_ID_INVALID;
1179         property->name    = g_strdup(name);
1180         property->type    = DBUS_TYPE_ARRAY;
1181         property->subtype = type;
1182
1183         DBG("name %s type %d value %p", name, type, value);
1184
1185         switch (type) {
1186         case DBUS_TYPE_BYTE:
1187                 property->value = g_try_malloc(len);
1188                 if (property->value != NULL) {
1189                         memcpy(property->value,
1190                                 *((const unsigned char **) value), len);
1191                         property->size = len;
1192                 }
1193                 break;
1194         }
1195
1196         __connman_element_lock(element);
1197         element->properties = g_slist_append(element->properties, property);
1198         __connman_element_unlock(element);
1199
1200         return 0;
1201 }
1202
1203 static void *get_reference_value(struct connman_element *element,
1204                                                 enum connman_property_id id)
1205 {
1206         GSList *list;
1207
1208         DBG("element %p name %s", element, element->name);
1209
1210         for (list = element->properties; list; list = list->next) {
1211                 struct connman_property *property = list->data;
1212
1213                 if (property->id != id)
1214                         continue;
1215
1216                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1217                         return property->value;
1218         }
1219
1220         if (element->parent == NULL)
1221                 return NULL;
1222
1223         return get_reference_value(element->parent, id);
1224 }
1225
1226 static void set_reference_properties(struct connman_element *element)
1227 {
1228         GSList *list;
1229
1230         DBG("element %p name %s", element, element->name);
1231
1232         for (list = element->properties; list; list = list->next) {
1233                 struct connman_property *property = list->data;
1234
1235                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1236                         continue;
1237
1238                 property->value = get_reference_value(element->parent,
1239                                                                 property->id);
1240         }
1241 }
1242
1243 static struct connman_property *create_property(struct connman_element *element,
1244                                                 enum connman_property_id id)
1245 {
1246         struct connman_property *property;
1247         GSList *list;
1248
1249         DBG("element %p name %s", element, element->name);
1250
1251         __connman_element_lock(element);
1252
1253         for (list = element->properties; list; list = list->next) {
1254                 property = list->data;
1255
1256                 if (property->id == id)
1257                         goto unlock;
1258         }
1259
1260         property = g_try_new0(struct connman_property, 1);
1261         if (property == NULL)
1262                 goto unlock;
1263
1264         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
1265         property->id    = id;
1266         property->name  = g_strdup(propid2name(id));
1267         property->type  = propid2type(id);
1268
1269         if (property->name == NULL) {
1270                 g_free(property);
1271                 property = NULL;
1272                 goto unlock;
1273         }
1274
1275         element->properties = g_slist_append(element->properties, property);
1276
1277 unlock:
1278         __connman_element_unlock(element);
1279
1280         return property;
1281 }
1282
1283 static void create_default_properties(struct connman_element *element)
1284 {
1285         struct connman_property *property;
1286         int i;
1287
1288         DBG("element %p name %s", element, element->name);
1289
1290         for (i = 0; propid_table[i].name; i++) {
1291                 DBG("property %s", propid_table[i].name);
1292
1293                 property = create_property(element, propid_table[i].id);
1294
1295                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
1296
1297                 if (propid_table[i].type != DBUS_TYPE_STRING)
1298                         continue;
1299
1300                 if (propid_table[i].value)
1301                         property->value = g_strdup(propid_table[i].value);
1302                 else
1303                         property->value = g_strdup("");
1304         }
1305 }
1306
1307 static int define_properties_valist(struct connman_element *element,
1308                                                                 va_list args)
1309 {
1310         enum connman_property_id id;
1311
1312         DBG("element %p name %s", element, element->name);
1313
1314         id = va_arg(args, enum connman_property_id);
1315
1316         while (id != CONNMAN_PROPERTY_ID_INVALID) {
1317
1318                 DBG("property %d", id);
1319
1320                 create_property(element, id);
1321
1322                 id = va_arg(args, enum connman_property_id);
1323         }
1324
1325         return 0;
1326 }
1327
1328 /**
1329  * connman_element_define_properties:
1330  * @element: an element
1331  * @varargs: list of property identifiers
1332  *
1333  * Define the valid properties for an element.
1334  *
1335  * Returns: %0 on success
1336  */
1337 int connman_element_define_properties(struct connman_element *element, ...)
1338 {
1339         va_list args;
1340         int err;
1341
1342         DBG("element %p name %s", element, element->name);
1343
1344         va_start(args, element);
1345
1346         err = define_properties_valist(element, args);
1347
1348         va_end(args);
1349
1350         return err;
1351 }
1352
1353 int connman_element_create_property(struct connman_element *element,
1354                                                 const char *name, int type)
1355 {
1356         return -EIO;
1357 }
1358
1359 int connman_element_set_property(struct connman_element *element,
1360                                 enum connman_property_id id, const void *value)
1361 {
1362         switch (id) {
1363         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1364                 __connman_element_lock(element);
1365                 g_free(element->ipv4.address);
1366                 element->ipv4.address = g_strdup(*((const char **) value));
1367                 __connman_element_unlock(element);
1368                 break;
1369         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1370                 __connman_element_lock(element);
1371                 g_free(element->ipv4.netmask);
1372                 element->ipv4.netmask = g_strdup(*((const char **) value));
1373                 __connman_element_unlock(element);
1374                 break;
1375         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1376                 __connman_element_lock(element);
1377                 g_free(element->ipv4.gateway);
1378                 element->ipv4.gateway = g_strdup(*((const char **) value));
1379                 __connman_element_unlock(element);
1380                 break;
1381         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1382                 __connman_element_lock(element);
1383                 g_free(element->ipv4.broadcast);
1384                 element->ipv4.broadcast = g_strdup(*((const char **) value));
1385                 __connman_element_unlock(element);
1386                 break;
1387         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1388                 __connman_element_lock(element);
1389                 g_free(element->ipv4.nameserver);
1390                 element->ipv4.nameserver = g_strdup(*((const char **) value));
1391                 __connman_element_unlock(element);
1392                 break;
1393         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1394                 __connman_element_lock(element);
1395                 g_free(element->wifi.security);
1396                 element->wifi.security = g_strdup(*((const char **) value));
1397                 __connman_element_unlock(element);
1398                 break;
1399         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1400                 __connman_element_lock(element);
1401                 g_free(element->wifi.passphrase);
1402                 element->wifi.passphrase = g_strdup(*((const char **) value));
1403                 __connman_element_unlock(element);
1404                 break;
1405         default:
1406                 return -EINVAL;
1407         }
1408
1409         return 0;
1410 }
1411
1412 int connman_element_get_value(struct connman_element *element,
1413                                 enum connman_property_id id, void *value)
1414 {
1415         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1416                 return -EINVAL;
1417
1418         switch (id) {
1419         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1420                 if (element->ipv4.address == NULL)
1421                         return connman_element_get_value(element->parent,
1422                                                                 id, value);
1423                 __connman_element_lock(element);
1424                 *((char **) value) = element->ipv4.address;
1425                 __connman_element_unlock(element);
1426                 break;
1427         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1428                 if (element->ipv4.netmask == NULL)
1429                         return connman_element_get_value(element->parent,
1430                                                                 id, value);
1431                 __connman_element_lock(element);
1432                 *((char **) value) = element->ipv4.netmask;
1433                 __connman_element_unlock(element);
1434                 break;
1435         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1436                 if (element->ipv4.gateway == NULL)
1437                         return connman_element_get_value(element->parent,
1438                                                                 id, value);
1439                 __connman_element_lock(element);
1440                 *((char **) value) = element->ipv4.gateway;
1441                 __connman_element_unlock(element);
1442                 break;
1443         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1444                 if (element->ipv4.broadcast == NULL)
1445                         return connman_element_get_value(element->parent,
1446                                                                 id, value);
1447                 __connman_element_lock(element);
1448                 *((char **) value) = element->ipv4.broadcast;
1449                 __connman_element_unlock(element);
1450                 break;
1451         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1452                 if (element->ipv4.nameserver == NULL)
1453                         return connman_element_get_value(element->parent,
1454                                                                 id, value);
1455                 __connman_element_lock(element);
1456                 *((char **) value) = element->ipv4.nameserver;
1457                 __connman_element_unlock(element);
1458                 break;
1459         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1460                 if (element->wifi.security == NULL)
1461                         return connman_element_get_value(element->parent,
1462                                                                 id, value);
1463                 __connman_element_lock(element);
1464                 *((char **) value) = element->wifi.security;
1465                 __connman_element_unlock(element);
1466                 break;
1467         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1468                 if (element->wifi.passphrase == NULL)
1469                         return connman_element_get_value(element->parent,
1470                                                                 id, value);
1471                 __connman_element_lock(element);
1472                 *((char **) value) = element->wifi.passphrase;
1473                 __connman_element_unlock(element);
1474                 break;
1475         default:
1476                 return -EINVAL;
1477         }
1478
1479         return 0;
1480 }
1481
1482 gboolean connman_element_get_static_property(struct connman_element *element,
1483                                                 const char *name, void *value)
1484 {
1485         GSList *list;
1486         gboolean found = FALSE;
1487
1488         DBG("element %p name %s", element, element->name);
1489
1490         __connman_element_lock(element);
1491
1492         for (list = element->properties; list; list = list->next) {
1493                 struct connman_property *property = list->data;
1494
1495                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1496                         continue;
1497
1498                 if (g_str_equal(property->name, name) == TRUE) {
1499                         switch (property->type) {
1500                         case DBUS_TYPE_STRING:
1501                                 *((char **) value) = property->value;
1502                                 found = TRUE;
1503                                 break;
1504                         }
1505                         break;
1506                 }
1507         }
1508
1509         __connman_element_unlock(element);
1510
1511         return found;
1512 }
1513
1514 gboolean connman_element_get_static_array_property(struct connman_element *element,
1515                                         const char *name, void *value, int *len)
1516 {
1517         GSList *list;
1518         gboolean found = FALSE;
1519
1520         DBG("element %p name %s", element, element->name);
1521
1522         __connman_element_lock(element);
1523
1524         for (list = element->properties; list; list = list->next) {
1525                 struct connman_property *property = list->data;
1526
1527                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1528                         continue;
1529
1530                 if (g_str_equal(property->name, name) == TRUE) {
1531                         *((char **) value) = property->value;
1532                         *len = property->size;
1533                         found = TRUE;
1534                         break;
1535                 }
1536         }
1537
1538         __connman_element_unlock(element);
1539
1540         return found;
1541 }
1542
1543 gboolean connman_element_match_static_property(struct connman_element *element,
1544                                         const char *name, const void *value)
1545 {
1546         GSList *list;
1547         gboolean result = FALSE;
1548
1549         DBG("element %p name %s", element, element->name);
1550
1551         __connman_element_lock(element);
1552
1553         for (list = element->properties; list; list = list->next) {
1554                 struct connman_property *property = list->data;
1555
1556                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1557                         continue;
1558
1559                 if (g_str_equal(property->name, name) == FALSE)
1560                         continue;
1561
1562                 if (property->type == DBUS_TYPE_STRING)
1563                         result = g_str_equal(property->value,
1564                                                 *((const char **) value));
1565
1566                 if (result == TRUE)
1567                         break;
1568         }
1569
1570         __connman_element_unlock(element);
1571
1572         return result;
1573 }
1574
1575 static void append_networks(struct connman_element *element,
1576                                                 DBusMessageIter *entry)
1577 {
1578         DBusMessageIter value, iter;
1579         const char *key = "Networks";
1580
1581         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1582
1583         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1584                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1585                                                                 &value);
1586
1587         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1588                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1589         __connman_element_list(element, CONNMAN_ELEMENT_TYPE_NETWORK, &iter);
1590         dbus_message_iter_close_container(&value, &iter);
1591
1592         dbus_message_iter_close_container(entry, &value);
1593 }
1594
1595 static void emit_networks_signal(DBusConnection *conn,
1596                                         struct connman_element *device)
1597 {
1598         DBusMessage *signal;
1599         DBusMessageIter entry;
1600
1601         DBG("conn %p", conn);
1602
1603         if (device == NULL)
1604                 return;
1605
1606         signal = dbus_message_new_signal(device->path,
1607                                 CONNMAN_DEVICE_INTERFACE, "PropertyChanged");
1608         if (signal == NULL)
1609                 return;
1610
1611         dbus_message_iter_init_append(signal, &entry);
1612
1613         append_networks(device, &entry);
1614
1615         g_dbus_send_message(conn, signal);
1616 }
1617
1618 static void append_connections(DBusMessageIter *entry)
1619 {
1620         DBusMessageIter value, iter;
1621         const char *key = "Connections";
1622
1623         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1624
1625         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1626                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1627                                                                 &value);
1628
1629         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1630                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1631         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1632         dbus_message_iter_close_container(&value, &iter);
1633
1634         dbus_message_iter_close_container(entry, &value);
1635 }
1636
1637 static void emit_connections_signal(DBusConnection *conn)
1638 {
1639         DBusMessage *signal;
1640         DBusMessageIter entry;
1641
1642         DBG("conn %p", conn);
1643
1644         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1645                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1646         if (signal == NULL)
1647                 return;
1648
1649         dbus_message_iter_init_append(signal, &entry);
1650
1651         append_connections(&entry);
1652
1653         g_dbus_send_message(conn, signal);
1654 }
1655
1656 static void append_state(DBusMessageIter *entry, const char *state)
1657 {
1658         DBusMessageIter value;
1659         const char *key = "State";
1660
1661         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1662
1663         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1664                                         DBUS_TYPE_STRING_AS_STRING, &value);
1665         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1666         dbus_message_iter_close_container(entry, &value);
1667 }
1668
1669 static void emit_state_change(DBusConnection *conn, const char *state)
1670 {
1671         DBusMessage *signal;
1672         DBusMessageIter entry;
1673
1674         DBG("conn %p", conn);
1675
1676         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1677                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1678         if (signal == NULL)
1679                 return;
1680
1681         dbus_message_iter_init_append(signal, &entry);
1682
1683         append_state(&entry, state);
1684
1685         g_dbus_send_message(conn, signal);
1686 }
1687
1688 static void set_signal_strength(struct connman_element *connection)
1689 {
1690         struct connman_element *element = connection;
1691
1692         while (element != NULL) {
1693                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1694                         connection->strength = element->strength;
1695                         break;
1696                 }
1697
1698                 element = element->parent;
1699         }
1700 }
1701
1702 static void probe_element(struct connman_element *element)
1703 {
1704         GSList *list;
1705
1706         DBG("element %p name %s", element, element->name);
1707
1708         for (list = driver_list; list; list = list->next) {
1709                 struct connman_driver *driver = list->data;
1710
1711                 if (match_driver(element, driver) == FALSE)
1712                         continue;
1713
1714                 DBG("driver %p name %s", driver, driver->name);
1715
1716                 if (driver->probe(element) == 0) {
1717                         __connman_element_lock(element);
1718                         element->driver = driver;
1719                         __connman_element_unlock(element);
1720
1721                         enable_element(element);
1722                         break;
1723                 }
1724         }
1725 }
1726
1727 static void register_element(gpointer data, gpointer user_data)
1728 {
1729         struct connman_element *element = data;
1730         const gchar *basepath;
1731         GNode *node;
1732
1733         __connman_element_lock(element);
1734
1735         if (element->parent) {
1736                 node = g_node_find(element_root, G_PRE_ORDER,
1737                                         G_TRAVERSE_ALL, element->parent);
1738                 basepath = element->parent->path;
1739
1740                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
1741                         element->subtype = element->parent->subtype;
1742         } else {
1743                 element->parent = element_root->data;
1744
1745                 node = element_root;
1746                 basepath = "";
1747         }
1748
1749         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1750
1751         set_reference_properties(element);
1752
1753         __connman_element_unlock(element);
1754
1755         DBG("element %p path %s", element, element->path);
1756
1757         __connman_element_load(element);
1758
1759         g_node_append_data(node, element);
1760
1761         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1762                 if (g_dbus_register_interface(connection, element->path,
1763                                         CONNMAN_NETWORK_INTERFACE,
1764                                         network_methods, element_signals,
1765                                         NULL, element, NULL) == FALSE)
1766                         connman_error("Failed to register %s network",
1767                                                                 element->path);
1768                 else
1769                         emit_networks_signal(connection, element->parent);
1770         }
1771
1772         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1773                 if (g_dbus_register_interface(connection, element->path,
1774                                         CONNMAN_CONNECTION_INTERFACE,
1775                                         connection_methods, element_signals,
1776                                         NULL, element, NULL) == FALSE)
1777                         connman_error("Failed to register %s connection",
1778                                                                 element->path);
1779                 else {
1780                         set_signal_strength(element);
1781                         emit_connections_signal(connection);
1782                         emit_state_change(connection, "online");
1783                 }
1784         }
1785
1786         emit_element_signal(connection, "ElementAdded", element);
1787
1788         __connman_element_store(element);
1789
1790         if (started == FALSE)
1791                 return;
1792
1793         probe_element(element);
1794 }
1795
1796 /**
1797  * connman_element_register:
1798  * @element: the element to register
1799  * @parent: the parent to register the element with
1800  *
1801  * Register an element with the core. It will be register under the given
1802  * parent of if %NULL is provided under the root element.
1803  *
1804  * Returns: %0 on success
1805  */
1806 int connman_element_register(struct connman_element *element,
1807                                         struct connman_element *parent)
1808 {
1809         DBG("element %p name %s parent %p", element, element->name, parent);
1810
1811         if (element->devname == NULL)
1812                 element->devname = g_strdup(element->name);
1813
1814         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1815                 if (g_pattern_match_simple(device_filter,
1816                                                 element->devname) == FALSE) {
1817                         DBG("ignoring %s [%s] device", element->name,
1818                                                         element->devname);
1819                         return -EPERM;
1820                 }
1821         }
1822
1823         if (connman_element_ref(element) == NULL)
1824                 return -EINVAL;
1825
1826         __connman_element_lock(element);
1827
1828         if (element->name == NULL) {
1829                 element->name = g_strdup(type2string(element->type));
1830                 if (element->name == NULL) {
1831                         __connman_element_unlock(element);
1832                         return -EINVAL;
1833                 }
1834         }
1835
1836         element->parent = parent;
1837
1838         __connman_element_unlock(element);
1839
1840         register_element(element, NULL);
1841
1842         return 0;
1843 }
1844
1845 static gboolean remove_element(GNode *node, gpointer user_data)
1846 {
1847         struct connman_element *element = node->data;
1848         struct connman_element *root = user_data;
1849
1850         DBG("element %p name %s", element, element->name);
1851
1852         if (element == root)
1853                 return FALSE;
1854
1855         if (node != NULL)
1856                 g_node_unlink(node);
1857
1858         if (element->driver) {
1859                 disable_element(element);
1860
1861                 if (element->driver->remove)
1862                         element->driver->remove(element);
1863
1864                 __connman_element_lock(element);
1865                 element->driver = NULL;
1866                 __connman_element_unlock(element);
1867         }
1868
1869         if (node != NULL)
1870                 g_node_destroy(node);
1871
1872         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1873                 if (__connman_element_count(NULL,
1874                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1875                         emit_state_change(connection, "offline");
1876                 emit_connections_signal(connection);
1877
1878                 g_dbus_unregister_interface(connection, element->path,
1879                                                 CONNMAN_CONNECTION_INTERFACE);
1880         }
1881
1882         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1883                 emit_networks_signal(connection, element->parent);
1884
1885                 g_dbus_unregister_interface(connection, element->path,
1886                                                 CONNMAN_NETWORK_INTERFACE);
1887         }
1888
1889         emit_element_signal(connection, "ElementRemoved", element);
1890
1891         connman_element_unref(element);
1892
1893         return FALSE;
1894 }
1895
1896 void connman_element_unregister(struct connman_element *element)
1897 {
1898         GNode *node;
1899
1900         DBG("element %p name %s", element, element->name);
1901
1902         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1903
1904         if (node != NULL)
1905                 g_node_traverse(node, G_POST_ORDER,
1906                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1907 }
1908
1909 void connman_element_unregister_children(struct connman_element *element)
1910 {
1911         GNode *node;
1912
1913         DBG("element %p name %s", element, element->name);
1914
1915         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1916
1917         if (node != NULL)
1918                 g_node_traverse(node, G_POST_ORDER,
1919                                 G_TRAVERSE_ALL, -1, remove_element, element);
1920 }
1921
1922 static gboolean update_element(GNode *node, gpointer user_data)
1923 {
1924         struct connman_element *element = node->data;
1925         struct connman_element *root = user_data;
1926
1927         DBG("element %p name %s", element, element->name);
1928
1929         if (element->driver && element->driver->update)
1930                 element->driver->update(element);
1931
1932         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1933                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1934                 if (element->strength != root->strength) {
1935                         element->strength = root->strength;
1936                         emit_property_changed(connection, element, "Strength",
1937                                         DBUS_TYPE_BYTE, &element->strength);
1938                 }
1939         }
1940
1941         emit_element_signal(connection, "ElementUpdated", element);
1942
1943         return FALSE;
1944 }
1945
1946 void connman_element_update(struct connman_element *element)
1947 {
1948         GNode *node;
1949
1950         DBG("element %p name %s", element, element->name);
1951
1952         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1953
1954         if (node != NULL)
1955                 g_node_traverse(node, G_PRE_ORDER,
1956                                 G_TRAVERSE_ALL, -1, update_element, element);
1957 }
1958
1959 int connman_element_set_enabled(struct connman_element *element,
1960                                                         gboolean enabled)
1961 {
1962         if (element->enabled == enabled)
1963                 return 0;
1964
1965         element->enabled = enabled;
1966
1967         emit_enabled_signal(connection, element);
1968
1969         return 0;
1970 }
1971
1972 int connman_element_set_scanning(struct connman_element *element,
1973                                                         gboolean scanning)
1974 {
1975         if (element->scanning == scanning)
1976                 return 0;
1977
1978         element->scanning = scanning;
1979
1980         emit_scanning_signal(connection, element);
1981
1982         return 0;
1983 }
1984
1985 int __connman_element_init(DBusConnection *conn, const char *device)
1986 {
1987         struct connman_element *element;
1988
1989         DBG("conn %p", conn);
1990
1991         connection = dbus_connection_ref(conn);
1992         if (connection == NULL)
1993                 return -EIO;
1994
1995         device_filter = g_strdup(device);
1996
1997         element = connman_element_create("root");
1998
1999         element->path = g_strdup("/");
2000         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
2001
2002         create_default_properties(element);
2003
2004         element_root = g_node_new(element);
2005
2006         __connman_device_init();
2007         __connman_network_init();
2008
2009         return 0;
2010 }
2011
2012 static gboolean probe_node(GNode *node, gpointer data)
2013 {
2014         struct connman_element *element = node->data;
2015
2016         DBG("element %p name %s", element, element->name);
2017
2018         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
2019                 return FALSE;
2020
2021         if (element->driver)
2022                 return FALSE;
2023
2024         probe_element(element);
2025
2026         return FALSE;
2027 }
2028
2029 void __connman_element_start(void)
2030 {
2031         DBG("");
2032
2033         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
2034                                                         probe_node, NULL);
2035
2036         started = TRUE;
2037
2038         __connman_detect_init();
2039 }
2040
2041 void __connman_element_stop(void)
2042 {
2043         DBG("");
2044
2045         __connman_detect_cleanup();
2046 }
2047
2048 static gboolean free_driver(GNode *node, gpointer data)
2049 {
2050         struct connman_element *element = node->data;
2051
2052         DBG("element %p name %s", element, element->name);
2053
2054         if (element->driver) {
2055                 disable_element(element);
2056
2057                 if (element->driver->remove)
2058                         element->driver->remove(element);
2059
2060                 __connman_element_lock(element);
2061                 element->driver = NULL;
2062                 __connman_element_unlock(element);
2063         }
2064
2065         return FALSE;
2066 }
2067
2068 static gboolean free_node(GNode *node, gpointer data)
2069 {
2070         struct connman_element *element = node->data;
2071
2072         DBG("element %p name %s", element, element->name);
2073
2074         if (g_node_depth(node) > 1)
2075                 connman_element_unregister(element);
2076
2077         return FALSE;
2078 }
2079
2080 void __connman_element_cleanup(void)
2081 {
2082         DBG("");
2083
2084         __connman_network_cleanup();
2085         __connman_device_cleanup();
2086
2087         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
2088                                                         free_driver, NULL);
2089
2090         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
2091                                                         free_node, NULL);
2092
2093         g_node_destroy(element_root);
2094         element_root = NULL;
2095
2096         g_free(device_filter);
2097
2098         dbus_connection_unref(connection);
2099 }