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