git.maemo.org Git - connman/blob - src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  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
  28 #include <glib.h>
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GStaticRWLock element_lock = G_STATIC_RW_LOCK_INIT;
  36 static GNode *element_root = NULL;
  37
  38 static GSList *driver_list = NULL;
  39
  40 static GThreadPool *thread_register = NULL;
  41 static GThreadPool *thread_unregister = NULL;
  42
  43 static gchar *device_filter = NULL;
  44
  45 static const char *type2string(enum connman_element_type type)
  46 {
  47         switch (type) {
  48         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  49                 return "unknown";
  50         case CONNMAN_ELEMENT_TYPE_ROOT:
  51                 return "root";
  52         case CONNMAN_ELEMENT_TYPE_DEVICE:
  53                 return "device";
  54         case CONNMAN_ELEMENT_TYPE_NETWORK:
  55                 return "network";
  56         case CONNMAN_ELEMENT_TYPE_IPV4:
  57                 return "ipv4";
  58         case CONNMAN_ELEMENT_TYPE_IPV6:
  59                 return "ipv6";
  60         case CONNMAN_ELEMENT_TYPE_DHCP:
  61                 return "dhcp";
  62         case CONNMAN_ELEMENT_TYPE_BOOTP:
  63                 return "bootp";
  64         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  65                 return "zeroconf";
  66         case CONNMAN_ELEMENT_TYPE_RESOLVER:
  67                 return "resolver";
  68         case CONNMAN_ELEMENT_TYPE_INTERNET:
  69                 return "internet";
  70         }
  71
  72         return NULL;
  73 }
  74
  75 static const char *subtype2string(enum connman_element_subtype type)
  76 {
  77         switch (type) {
  78         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
  79                 return "unknown";
  80         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
  81                 return "ethernet";
  82         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
  83                 return "wifi";
  84         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
  85                 return "wimax";
  86         case CONNMAN_ELEMENT_SUBTYPE_MODEM:
  87                 return "modem";
  88         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
  89                 return "bluetooth";
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static void append_entry(DBusMessageIter *dict,
  96                                 const char *key, int type, void *val)
  97 {
  98         DBusMessageIter entry, value;
  99         const char *signature;
 100
 101         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
 102                                                                 NULL, &entry);
 103
 104         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 105
 106         switch (type) {
 107         case DBUS_TYPE_BOOLEAN:
 108                 signature = DBUS_TYPE_BOOLEAN_AS_STRING;
 109                 break;
 110         case DBUS_TYPE_STRING:
 111                 signature = DBUS_TYPE_STRING_AS_STRING;
 112                 break;
 113         case DBUS_TYPE_UINT16:
 114                 signature = DBUS_TYPE_UINT16_AS_STRING;
 115                 break;
 116         case DBUS_TYPE_UINT32:
 117                 signature = DBUS_TYPE_UINT32_AS_STRING;
 118                 break;
 119         case DBUS_TYPE_OBJECT_PATH:
 120                 signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
 121                 break;
 122         default:
 123                 signature = DBUS_TYPE_VARIANT_AS_STRING;
 124                 break;
 125         }
 126
 127         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 128                                                         signature, &value);
 129         dbus_message_iter_append_basic(&value, type, val);
 130         dbus_message_iter_close_container(&entry, &value);
 131
 132         dbus_message_iter_close_container(dict, &entry);
 133 }
 134
 135 static void append_property(DBusMessageIter *dict,
 136                                 struct connman_property *property)
 137 {
 138         if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC) {
 139                 append_entry(dict, property->name, property->type,
 140                                                         &property->value);
 141                 return;
 142         }
 143 }
 144
 145 static DBusMessage *get_properties(DBusConnection *conn,
 146                                         DBusMessage *msg, void *data)
 147 {
 148         struct connman_element *element = data;
 149         GSList *list;
 150         DBusMessage *reply;
 151         DBusMessageIter array, dict;
 152         const char *str;
 153
 154         DBG("conn %p", conn);
 155
 156         reply = dbus_message_new_method_return(msg);
 157         if (reply == NULL)
 158                 return NULL;
 159
 160         dbus_message_iter_init_append(reply, &array);
 161
 162         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 163                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 164                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 165                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 166
 167         if (element->parent != NULL)
 168                 append_entry(&dict, "Parent",
 169                                 DBUS_TYPE_OBJECT_PATH, &element->parent->path);
 170
 171         str = type2string(element->type);
 172         if (str != NULL)
 173                 append_entry(&dict, "Type", DBUS_TYPE_STRING, &str);
 174         str = subtype2string(element->subtype);
 175         if (str != NULL)
 176                 append_entry(&dict, "Subtype", DBUS_TYPE_STRING, &str);
 177
 178         append_entry(&dict, "Connected",
 179                                 DBUS_TYPE_BOOLEAN, &element->connected);
 180
 181         if (element->priority > 0)
 182                 append_entry(&dict, "Priority",
 183                                 DBUS_TYPE_UINT16, &element->priority);
 184
 185         if (element->network.identifier != NULL)
 186                 append_entry(&dict, "Identifier",
 187                                 DBUS_TYPE_STRING, &element->network.identifier);
 188
 189         if (element->ipv4.address != NULL)
 190                 append_entry(&dict, "IPv4.Address",
 191                                 DBUS_TYPE_STRING, &element->ipv4.address);
 192         if (element->ipv4.netmask != NULL)
 193                 append_entry(&dict, "IPv4.Netmask",
 194                                 DBUS_TYPE_STRING, &element->ipv4.netmask);
 195         if (element->ipv4.gateway != NULL)
 196                 append_entry(&dict, "IPv4.Gateway",
 197                                 DBUS_TYPE_STRING, &element->ipv4.gateway);
 198
 199         for (list = element->properties; list; list = list->next) {
 200                 struct connman_property *property = list->data;
 201
 202                 append_property(&dict, property);
 203         }
 204
 205         dbus_message_iter_close_container(&array, &dict);
 206
 207         return reply;
 208 }
 209
 210 static DBusMessage *set_property(DBusConnection *conn,
 211                                         DBusMessage *msg, void *data)
 212 {
 213         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 214 }
 215
 216 static DBusMessage *do_update(DBusConnection *conn,
 217                                         DBusMessage *msg, void *data)
 218 {
 219         struct connman_element *element = data;
 220
 221         DBG("conn %p", conn);
 222
 223         if (element->driver == NULL)
 224                 return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 225
 226         if (element->driver->update) {
 227                 DBG("Calling update callback");
 228                 element->driver->update(element);
 229         }
 230
 231         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 232 }
 233
 234 static DBusMessage *do_connect(DBusConnection *conn,
 235                                         DBusMessage *msg, void *data)
 236 {
 237         struct connman_element *element = data;
 238
 239         DBG("conn %p", conn);
 240
 241         if (element->driver == NULL)
 242                 return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 243
 244         if (element->driver->connect) {
 245                 DBG("Calling connect callback");
 246                 element->driver->connect(element);
 247         }
 248
 249         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 250 }
 251
 252 static DBusMessage *do_disconnect(DBusConnection *conn,
 253                                         DBusMessage *msg, void *data)
 254 {
 255         struct connman_element *element = data;
 256
 257         DBG("conn %p", conn);
 258
 259         if (element->driver == NULL)
 260                 return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 261
 262         if (element->driver->disconnect) {
 263                 DBG("Calling disconnect callback");
 264                 element->driver->disconnect(element);
 265         }
 266
 267         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 268 }
 269
 270 static GDBusMethodTable element_methods[] = {
 271         { "GetProperties", "",   "a{sv}", get_properties },
 272         { "SetProperty",   "sv", "",      set_property   },
 273         { "Update",        "",   "",      do_update      },
 274         { "Connect",       "",   "",      do_connect     },
 275         { "Disconnect",    "",   "",      do_disconnect  },
 276         { },
 277 };
 278
 279 static GDBusSignalTable element_signals[] = {
 280         { "PropertyChanged", "sv" },
 281         { },
 282 };
 283
 284 struct append_filter {
 285         enum connman_element_type type;
 286         DBusMessageIter *iter;
 287 };
 288
 289 static gboolean append_path(GNode *node, gpointer data)
 290 {
 291         struct connman_element *element = node->data;
 292         struct append_filter *filter = data;
 293
 294         DBG("element %p name %s", element, element->name);
 295
 296         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 297                 return FALSE;
 298
 299         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 300                                         filter->type != element->type)
 301                 return FALSE;
 302
 303         dbus_message_iter_append_basic(filter->iter,
 304                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 305
 306         return FALSE;
 307 }
 308
 309 void __connman_element_list(enum connman_element_type type,
 310                                                 DBusMessageIter *iter)
 311 {
 312         struct append_filter filter = { type, iter };
 313
 314         DBG("");
 315
 316         g_static_rw_lock_reader_lock(&element_lock);
 317         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 318                                                         append_path, &filter);
 319         g_static_rw_lock_reader_unlock(&element_lock);
 320 }
 321
 322 static gint compare_priority(gconstpointer a, gconstpointer b)
 323 {
 324         const struct connman_driver *driver1 = a;
 325         const struct connman_driver *driver2 = b;
 326
 327         return driver2->priority - driver1->priority;
 328 }
 329
 330 static gboolean match_driver(struct connman_element *element,
 331                                         struct connman_driver *driver)
 332 {
 333         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 334                 return FALSE;
 335
 336         if (element->type != driver->type &&
 337                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 338                 return FALSE;
 339
 340         if (element->subtype == driver->subtype ||
 341                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 342                 return TRUE;
 343
 344         return FALSE;
 345 }
 346
 347 static gboolean probe_driver(GNode *node, gpointer data)
 348 {
 349         struct connman_element *element = node->data;
 350         struct connman_driver *driver = data;
 351
 352         DBG("element %p name %s", element, element->name);
 353
 354         if (!element->driver && match_driver(element, driver) == TRUE) {
 355                 if (driver->probe(element) < 0)
 356                         return FALSE;
 357
 358                 connman_element_lock(element);
 359                 element->driver = driver;
 360                 connman_element_unlock(element);
 361         }
 362
 363         return FALSE;
 364 }
 365
 366 int connman_driver_register(struct connman_driver *driver)
 367 {
 368         DBG("driver %p name %s", driver, driver->name);
 369
 370         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 371                 return -EINVAL;
 372
 373         if (!driver->probe)
 374                 return -EINVAL;
 375
 376         g_static_rw_lock_writer_lock(&element_lock);
 377
 378         driver_list = g_slist_insert_sorted(driver_list, driver,
 379                                                         compare_priority);
 380
 381         if (element_root != NULL)
 382                 g_node_traverse(element_root, G_PRE_ORDER,
 383                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 384
 385         g_static_rw_lock_writer_unlock(&element_lock);
 386
 387         return 0;
 388 }
 389
 390 static gboolean remove_driver(GNode *node, gpointer data)
 391 {
 392         struct connman_element *element = node->data;
 393         struct connman_driver *driver = data;
 394
 395         DBG("element %p name %s", element, element->name);
 396
 397         if (element->driver == driver) {
 398                 if (driver->remove)
 399                         driver->remove(element);
 400
 401                 connman_element_lock(element);
 402                 element->driver = NULL;
 403                 connman_element_unlock(element);
 404         }
 405
 406         return FALSE;
 407 }
 408
 409 void connman_driver_unregister(struct connman_driver *driver)
 410 {
 411         DBG("driver %p name %s", driver, driver->name);
 412
 413         g_static_rw_lock_writer_lock(&element_lock);
 414
 415         driver_list = g_slist_remove(driver_list, driver);
 416
 417         if (element_root != NULL)
 418                 g_node_traverse(element_root, G_POST_ORDER,
 419                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 420
 421         g_static_rw_lock_writer_unlock(&element_lock);
 422 }
 423
 424 struct connman_element *connman_element_create(void)
 425 {
 426         struct connman_element *element;
 427
 428         element = g_new0(struct connman_element, 1);
 429
 430         DBG("element %p", element);
 431
 432         element->refcount = 1;
 433
 434         g_static_mutex_init(&element->mutex);
 435
 436         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 437         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 438         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 439
 440         element->connected = FALSE;
 441
 442         element->netdev.index = -1;
 443
 444         return element;
 445 }
 446
 447 struct connman_element *connman_element_ref(struct connman_element *element)
 448 {
 449         DBG("element %p name %s refcount %d", element, element->name,
 450                                 g_atomic_int_get(&element->refcount) + 1);
 451
 452         g_atomic_int_inc(&element->refcount);
 453
 454         return element;
 455 }
 456
 457 void connman_element_unref(struct connman_element *element)
 458 {
 459         DBG("element %p name %s refcount %d", element, element->name,
 460                                 g_atomic_int_get(&element->refcount) - 1);
 461
 462         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 463                 GSList *list;
 464
 465                 for (list = element->properties; list; list = list->next) {
 466                         struct connman_property *property = list->data;
 467                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 468                                         property->type == DBUS_TYPE_STRING)
 469                                 g_free(property->value);
 470                         g_free(property);
 471                         list->data = NULL;
 472                 }
 473                 g_slist_free(element->properties);
 474
 475                 g_free(element->ipv4.address);
 476                 g_free(element->ipv4.netmask);
 477                 g_free(element->ipv4.gateway);
 478                 g_free(element->ipv4.network);
 479                 g_free(element->ipv4.broadcast);
 480                 g_free(element->ipv4.nameserver);
 481                 g_free(element->network.identifier);
 482                 g_free(element->netdev.name);
 483                 g_free(element->path);
 484                 g_free(element->name);
 485                 g_free(element);
 486         }
 487 }
 488
 489 int connman_element_add_static_property(struct connman_element *element,
 490                                 const char *name, int type, const void *value)
 491 {
 492         struct connman_property *property;
 493
 494         DBG("element %p name %s", element, element->name);
 495
 496         if (type != DBUS_TYPE_STRING)
 497                 return -EINVAL;
 498
 499         property = g_try_new0(struct connman_property, 1);
 500         if (property == NULL)
 501                 return -ENOMEM;
 502
 503         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 504
 505         property->name = g_strdup(name);
 506         property->type = type;
 507
 508         DBG("name %s type %d value %p", name, type, value);
 509
 510         switch (type) {
 511         case DBUS_TYPE_STRING:
 512                 property->value = g_strdup(*((const char **) value));
 513                 break;
 514         }
 515
 516         connman_element_lock(element);
 517         element->properties = g_slist_append(element->properties, property);
 518         connman_element_unlock(element);
 519
 520         return 0;
 521 }
 522
 523 int connman_element_set_property(struct connman_element *element,
 524                         enum connman_property_type type, const void *value)
 525 {
 526         switch (type) {
 527         case CONNMAN_PROPERTY_TYPE_INVALID:
 528                 return -EINVAL;
 529         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 530                 connman_element_lock(element);
 531                 g_free(element->ipv4.address);
 532                 element->ipv4.address = g_strdup(*((const char **) value));
 533                 connman_element_unlock(element);
 534                 break;
 535         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 536                 connman_element_lock(element);
 537                 g_free(element->ipv4.netmask);
 538                 element->ipv4.netmask = g_strdup(*((const char **) value));
 539                 connman_element_unlock(element);
 540                 break;
 541         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 542                 connman_element_lock(element);
 543                 g_free(element->ipv4.gateway);
 544                 element->ipv4.gateway = g_strdup(*((const char **) value));
 545                 connman_element_unlock(element);
 546                 break;
 547         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 548                 connman_element_lock(element);
 549                 g_free(element->ipv4.nameserver);
 550                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 551                 connman_element_unlock(element);
 552                 break;
 553         }
 554
 555         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 556                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 557                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 558                                                         DBUS_TYPE_INVALID);
 559
 560         return 0;
 561 }
 562
 563 int connman_element_get_value(struct connman_element *element,
 564                                 enum connman_property_type type, void *value)
 565 {
 566         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 567                 return -EINVAL;
 568
 569         switch (type) {
 570         case CONNMAN_PROPERTY_TYPE_INVALID:
 571                 return -EINVAL;
 572         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 573                 if (element->ipv4.address == NULL)
 574                         return connman_element_get_value(element->parent,
 575                                                                 type, value);
 576                 connman_element_lock(element);
 577                 *((char **) value) = element->ipv4.address;
 578                 connman_element_unlock(element);
 579                 break;
 580         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 581                 if (element->ipv4.netmask == NULL)
 582                         return connman_element_get_value(element->parent,
 583                                                                 type, value);
 584                 connman_element_lock(element);
 585                 *((char **) value) = element->ipv4.netmask;
 586                 connman_element_unlock(element);
 587                 break;
 588         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 589                 if (element->ipv4.gateway == NULL)
 590                         return connman_element_get_value(element->parent,
 591                                                                 type, value);
 592                 connman_element_lock(element);
 593                 *((char **) value) = element->ipv4.gateway;
 594                 connman_element_unlock(element);
 595                 break;
 596         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 597                 if (element->ipv4.nameserver == NULL)
 598                         return connman_element_get_value(element->parent,
 599                                                                 type, value);
 600                 connman_element_lock(element);
 601                 *((char **) value) = element->ipv4.nameserver;
 602                 connman_element_unlock(element);
 603                 break;
 604         }
 605
 606         return 0;
 607 }
 608
 609 int connman_element_register(struct connman_element *element,
 610                                         struct connman_element *parent)
 611 {
 612         DBG("element %p name %s parent %p", element, element->name, parent);
 613
 614         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
 615                 if (g_str_equal(device_filter, element->netdev.name) == FALSE)
 616                         return -EINVAL;
 617         }
 618
 619         if (connman_element_ref(element) == NULL)
 620                 return -EINVAL;
 621
 622         connman_element_lock(element);
 623
 624         __connman_element_load(element);
 625
 626         if (element->name == NULL) {
 627                 element->name = g_strdup(type2string(element->type));
 628                 if (element->name == NULL)
 629                         return -EINVAL;
 630         }
 631
 632         element->parent = parent;
 633
 634         connman_element_unlock(element);
 635
 636         if (thread_register != NULL)
 637                 g_thread_pool_push(thread_register, element, NULL);
 638
 639         return 0;
 640 }
 641
 642 void connman_element_unregister(struct connman_element *element)
 643 {
 644         DBG("element %p name %s", element, element->name);
 645
 646         if (thread_unregister != NULL)
 647                 g_thread_pool_push(thread_unregister, element, NULL);
 648 }
 649
 650 void connman_element_update(struct connman_element *element)
 651 {
 652         DBG("element %p name %s", element, element->name);
 653
 654         g_static_rw_lock_reader_lock(&element_lock);
 655
 656         if (element->driver && element->driver->update)
 657                 element->driver->update(element);
 658
 659         g_static_rw_lock_reader_unlock(&element_lock);
 660
 661         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 662                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 663                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 664                                                         DBUS_TYPE_INVALID);
 665 }
 666
 667 static void register_element(gpointer data, gpointer user_data)
 668 {
 669         struct connman_element *element = data;
 670         const gchar *basepath;
 671         GSList *list;
 672         GNode *node;
 673
 674         g_static_rw_lock_writer_lock(&element_lock);
 675
 676         connman_element_lock(element);
 677
 678         if (element->parent) {
 679                 node = g_node_find(element_root, G_PRE_ORDER,
 680                                         G_TRAVERSE_ALL, element->parent);
 681                 basepath = element->parent->path;
 682
 683                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 684                         element->subtype = element->parent->subtype;
 685         } else {
 686                 node = element_root;
 687                 basepath = "";
 688         }
 689
 690         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 691
 692         connman_element_unlock(element);
 693
 694         DBG("element %p path %s", element, element->path);
 695
 696         g_node_append_data(node, element);
 697
 698         if (g_dbus_register_interface(connection, element->path,
 699                                         CONNMAN_ELEMENT_INTERFACE,
 700                                         element_methods, element_signals,
 701                                         NULL, element, NULL) == FALSE)
 702                 connman_error("Failed to register %s", element->path);
 703
 704         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 705                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 706                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 707                                                         DBUS_TYPE_INVALID);
 708
 709         g_static_rw_lock_writer_unlock(&element_lock);
 710
 711         __connman_element_store(element);
 712
 713         g_static_rw_lock_writer_lock(&element_lock);
 714
 715         for (list = driver_list; list; list = list->next) {
 716                 struct connman_driver *driver = list->data;
 717
 718                 if (match_driver(element, driver) == FALSE)
 719                         continue;
 720
 721                 DBG("driver %p name %s", driver, driver->name);
 722
 723                 if (driver->probe(element) < 0)
 724                         continue;
 725
 726                 connman_element_lock(element);
 727                 element->driver = driver;
 728                 connman_element_unlock(element);
 729         }
 730
 731         g_static_rw_lock_writer_unlock(&element_lock);
 732 }
 733
 734 static gboolean remove_element(GNode *node, gpointer user_data)
 735 {
 736         struct connman_element *element = node->data;
 737
 738         DBG("element %p name %s", element, element->name);
 739
 740         if (element->driver) {
 741                 if (element->driver->remove)
 742                         element->driver->remove(element);
 743
 744                 connman_element_lock(element);
 745                 element->driver = NULL;
 746                 connman_element_unlock(element);
 747         }
 748
 749         if (node != NULL) {
 750                 g_node_unlink(node);
 751                 g_node_destroy(node);
 752         }
 753
 754         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 755                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 756                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 757                                                         DBUS_TYPE_INVALID);
 758
 759         g_dbus_unregister_interface(connection, element->path,
 760                                                 CONNMAN_ELEMENT_INTERFACE);
 761
 762         connman_element_unref(element);
 763
 764         return FALSE;
 765 }
 766
 767 static void unregister_element(gpointer data, gpointer user_data)
 768 {
 769         struct connman_element *element = data;
 770         GNode *node;
 771
 772         DBG("element %p name %s", element, element->name);
 773
 774         g_static_rw_lock_writer_lock(&element_lock);
 775
 776         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 777
 778         if (node != NULL)
 779                 g_node_traverse(node, G_POST_ORDER,
 780                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
 781
 782         g_static_rw_lock_writer_unlock(&element_lock);
 783 }
 784
 785 int __connman_element_init(DBusConnection *conn, const char *device)
 786 {
 787         struct connman_element *element;
 788
 789         DBG("conn %p", conn);
 790
 791         connection = dbus_connection_ref(conn);
 792         if (connection == NULL)
 793                 return -EIO;
 794
 795         device_filter = g_strdup(device);
 796
 797         g_static_rw_lock_writer_lock(&element_lock);
 798
 799         element = connman_element_create();
 800
 801         element->name = g_strdup("root");
 802         element->path = g_strdup("/");
 803         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 804
 805         element_root = g_node_new(element);
 806
 807         g_static_rw_lock_writer_unlock(&element_lock);
 808
 809         thread_register = g_thread_pool_new(register_element,
 810                                                         NULL, 1, FALSE, NULL);
 811         thread_unregister = g_thread_pool_new(unregister_element,
 812                                                         NULL, 1, FALSE, NULL);
 813
 814         return 0;
 815 }
 816
 817 static gboolean free_driver(GNode *node, gpointer data)
 818 {
 819         struct connman_element *element = node->data;
 820
 821         DBG("element %p name %s", element, element->name);
 822
 823         if (element->driver) {
 824                 if (element->driver->remove)
 825                         element->driver->remove(element);
 826
 827                 connman_element_lock(element);
 828                 element->driver = NULL;
 829                 connman_element_unlock(element);
 830         }
 831
 832         return FALSE;
 833 }
 834
 835 static gboolean free_node(GNode *node, gpointer data)
 836 {
 837         struct connman_element *element = node->data;
 838
 839         DBG("element %p name %s", element, element->name);
 840
 841         if (g_node_depth(node) > 1)
 842                 g_thread_pool_push(thread_unregister, element, NULL);
 843
 844         return FALSE;
 845 }
 846
 847 void __connman_element_cleanup(void)
 848 {
 849         DBG("");
 850
 851         g_thread_pool_free(thread_register, TRUE, TRUE);
 852         thread_register = NULL;
 853
 854         g_static_rw_lock_writer_lock(&element_lock);
 855         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 856                                                         free_driver, NULL);
 857         g_static_rw_lock_writer_unlock(&element_lock);
 858
 859         g_static_rw_lock_writer_lock(&element_lock);
 860         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 861                                                         free_node, NULL);
 862         g_static_rw_lock_writer_unlock(&element_lock);
 863
 864         g_thread_pool_free(thread_unregister, FALSE, TRUE);
 865         thread_unregister = NULL;
 866
 867         g_static_rw_lock_writer_lock(&element_lock);
 868         g_node_destroy(element_root);
 869         element_root = NULL;
 870         g_static_rw_lock_writer_unlock(&element_lock);
 871
 872         g_free(device_filter);
 873
 874         dbus_connection_unref(connection);
 875 }