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 struct append_filter {
 280         enum connman_element_type type;
 281         DBusMessageIter *iter;
 282 };
 283
 284 static gboolean append_path(GNode *node, gpointer data)
 285 {
 286         struct connman_element *element = node->data;
 287         struct append_filter *filter = data;
 288
 289         DBG("element %p name %s", element, element->name);
 290
 291         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 292                 return FALSE;
 293
 294         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 295                                         filter->type != element->type)
 296                 return FALSE;
 297
 298         dbus_message_iter_append_basic(filter->iter,
 299                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 300
 301         return FALSE;
 302 }
 303
 304 void __connman_element_list(enum connman_element_type type,
 305                                                 DBusMessageIter *iter)
 306 {
 307         struct append_filter filter = { type, iter };
 308
 309         DBG("");
 310
 311         g_static_rw_lock_reader_lock(&element_lock);
 312         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 313                                                         append_path, &filter);
 314         g_static_rw_lock_reader_unlock(&element_lock);
 315 }
 316
 317 static gint compare_priority(gconstpointer a, gconstpointer b)
 318 {
 319         const struct connman_driver *driver1 = a;
 320         const struct connman_driver *driver2 = b;
 321
 322         return driver2->priority - driver1->priority;
 323 }
 324
 325 static gboolean match_driver(struct connman_element *element,
 326                                         struct connman_driver *driver)
 327 {
 328         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 329                 return FALSE;
 330
 331         if (element->type != driver->type &&
 332                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 333                 return FALSE;
 334
 335         if (element->subtype == driver->subtype ||
 336                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 337                 return TRUE;
 338
 339         return FALSE;
 340 }
 341
 342 static gboolean probe_driver(GNode *node, gpointer data)
 343 {
 344         struct connman_element *element = node->data;
 345         struct connman_driver *driver = data;
 346
 347         DBG("element %p name %s", element, element->name);
 348
 349         if (!element->driver && match_driver(element, driver) == TRUE) {
 350                 if (driver->probe(element) < 0)
 351                         return FALSE;
 352
 353                 connman_element_lock(element);
 354                 element->driver = driver;
 355                 connman_element_unlock(element);
 356         }
 357
 358         return FALSE;
 359 }
 360
 361 int connman_driver_register(struct connman_driver *driver)
 362 {
 363         DBG("driver %p name %s", driver, driver->name);
 364
 365         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 366                 return -EINVAL;
 367
 368         if (!driver->probe)
 369                 return -EINVAL;
 370
 371         g_static_rw_lock_writer_lock(&element_lock);
 372
 373         driver_list = g_slist_insert_sorted(driver_list, driver,
 374                                                         compare_priority);
 375
 376         if (element_root != NULL)
 377                 g_node_traverse(element_root, G_PRE_ORDER,
 378                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 379
 380         g_static_rw_lock_writer_unlock(&element_lock);
 381
 382         return 0;
 383 }
 384
 385 static gboolean remove_driver(GNode *node, gpointer data)
 386 {
 387         struct connman_element *element = node->data;
 388         struct connman_driver *driver = data;
 389
 390         DBG("element %p name %s", element, element->name);
 391
 392         if (element->driver == driver) {
 393                 if (driver->remove)
 394                         driver->remove(element);
 395
 396                 connman_element_lock(element);
 397                 element->driver = NULL;
 398                 connman_element_unlock(element);
 399         }
 400
 401         return FALSE;
 402 }
 403
 404 void connman_driver_unregister(struct connman_driver *driver)
 405 {
 406         DBG("driver %p name %s", driver, driver->name);
 407
 408         g_static_rw_lock_writer_lock(&element_lock);
 409
 410         driver_list = g_slist_remove(driver_list, driver);
 411
 412         if (element_root != NULL)
 413                 g_node_traverse(element_root, G_POST_ORDER,
 414                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 415
 416         g_static_rw_lock_writer_unlock(&element_lock);
 417 }
 418
 419 struct connman_element *connman_element_create(void)
 420 {
 421         struct connman_element *element;
 422
 423         element = g_new0(struct connman_element, 1);
 424
 425         DBG("element %p", element);
 426
 427         element->refcount = 1;
 428
 429         g_static_mutex_init(&element->mutex);
 430
 431         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 432         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 433         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 434
 435         element->connected = FALSE;
 436
 437         element->netdev.index = -1;
 438
 439         return element;
 440 }
 441
 442 struct connman_element *connman_element_ref(struct connman_element *element)
 443 {
 444         DBG("element %p name %s refcount %d", element, element->name,
 445                                 g_atomic_int_get(&element->refcount) + 1);
 446
 447         g_atomic_int_inc(&element->refcount);
 448
 449         return element;
 450 }
 451
 452 void connman_element_unref(struct connman_element *element)
 453 {
 454         DBG("element %p name %s refcount %d", element, element->name,
 455                                 g_atomic_int_get(&element->refcount) - 1);
 456
 457         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 458                 GSList *list;
 459
 460                 for (list = element->properties; list; list = list->next) {
 461                         struct connman_property *property = list->data;
 462                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 463                                         property->type == DBUS_TYPE_STRING)
 464                                 g_free(property->value);
 465                         g_free(property);
 466                         list->data = NULL;
 467                 }
 468                 g_slist_free(element->properties);
 469
 470                 g_free(element->ipv4.address);
 471                 g_free(element->ipv4.netmask);
 472                 g_free(element->ipv4.gateway);
 473                 g_free(element->ipv4.network);
 474                 g_free(element->ipv4.broadcast);
 475                 g_free(element->ipv4.nameserver);
 476                 g_free(element->network.identifier);
 477                 g_free(element->netdev.name);
 478                 g_free(element->path);
 479                 g_free(element->name);
 480                 g_free(element);
 481         }
 482 }
 483
 484 int connman_element_add_static_property(struct connman_element *element,
 485                                 const char *name, int type, const void *value)
 486 {
 487         struct connman_property *property;
 488
 489         DBG("element %p name %s", element, element->name);
 490
 491         if (type != DBUS_TYPE_STRING)
 492                 return -EINVAL;
 493
 494         property = g_try_new0(struct connman_property, 1);
 495         if (property == NULL)
 496                 return -ENOMEM;
 497
 498         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 499
 500         property->name = g_strdup(name);
 501         property->type = type;
 502
 503         DBG("name %s type %d value %p", name, type, value);
 504
 505         switch (type) {
 506         case DBUS_TYPE_STRING:
 507                 property->value = g_strdup(*((const char **) value));
 508                 break;
 509         }
 510
 511         connman_element_lock(element);
 512         element->properties = g_slist_append(element->properties, property);
 513         connman_element_unlock(element);
 514
 515         return 0;
 516 }
 517
 518 int connman_element_set_property(struct connman_element *element,
 519                         enum connman_property_type type, const void *value)
 520 {
 521         switch (type) {
 522         case CONNMAN_PROPERTY_TYPE_INVALID:
 523                 return -EINVAL;
 524         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 525                 connman_element_lock(element);
 526                 g_free(element->ipv4.address);
 527                 element->ipv4.address = g_strdup(*((const char **) value));
 528                 connman_element_unlock(element);
 529                 break;
 530         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 531                 connman_element_lock(element);
 532                 g_free(element->ipv4.netmask);
 533                 element->ipv4.netmask = g_strdup(*((const char **) value));
 534                 connman_element_unlock(element);
 535                 break;
 536         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 537                 connman_element_lock(element);
 538                 g_free(element->ipv4.gateway);
 539                 element->ipv4.gateway = g_strdup(*((const char **) value));
 540                 connman_element_unlock(element);
 541                 break;
 542         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 543                 connman_element_lock(element);
 544                 g_free(element->ipv4.nameserver);
 545                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 546                 connman_element_unlock(element);
 547                 break;
 548         }
 549
 550         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 551                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 552                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 553                                                         DBUS_TYPE_INVALID);
 554
 555         return 0;
 556 }
 557
 558 int connman_element_get_value(struct connman_element *element,
 559                                 enum connman_property_type type, void *value)
 560 {
 561         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 562                 return -EINVAL;
 563
 564         switch (type) {
 565         case CONNMAN_PROPERTY_TYPE_INVALID:
 566                 return -EINVAL;
 567         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 568                 if (element->ipv4.address == NULL)
 569                         return connman_element_get_value(element->parent,
 570                                                                 type, value);
 571                 connman_element_lock(element);
 572                 *((char **) value) = element->ipv4.address;
 573                 connman_element_unlock(element);
 574                 break;
 575         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 576                 if (element->ipv4.netmask == NULL)
 577                         return connman_element_get_value(element->parent,
 578                                                                 type, value);
 579                 connman_element_lock(element);
 580                 *((char **) value) = element->ipv4.netmask;
 581                 connman_element_unlock(element);
 582                 break;
 583         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 584                 if (element->ipv4.gateway == NULL)
 585                         return connman_element_get_value(element->parent,
 586                                                                 type, value);
 587                 connman_element_lock(element);
 588                 *((char **) value) = element->ipv4.gateway;
 589                 connman_element_unlock(element);
 590                 break;
 591         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 592                 if (element->ipv4.nameserver == NULL)
 593                         return connman_element_get_value(element->parent,
 594                                                                 type, value);
 595                 connman_element_lock(element);
 596                 *((char **) value) = element->ipv4.nameserver;
 597                 connman_element_unlock(element);
 598                 break;
 599         }
 600
 601         return 0;
 602 }
 603
 604 int connman_element_register(struct connman_element *element,
 605                                         struct connman_element *parent)
 606 {
 607         DBG("element %p name %s parent %p", element, element->name, parent);
 608
 609         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
 610                 if (g_str_equal(device_filter, element->netdev.name) == FALSE)
 611                         return -EINVAL;
 612         }
 613
 614         if (connman_element_ref(element) == NULL)
 615                 return -EINVAL;
 616
 617         connman_element_lock(element);
 618
 619         __connman_element_load(element);
 620
 621         if (element->name == NULL) {
 622                 switch (element->type) {
 623                 case CONNMAN_ELEMENT_TYPE_IPV4:
 624                         element->name = g_strdup("ipv4");
 625                         break;
 626                 case CONNMAN_ELEMENT_TYPE_IPV6:
 627                         element->name = g_strdup("ipv6");
 628                         break;
 629                 case CONNMAN_ELEMENT_TYPE_DHCP:
 630                         element->name = g_strdup("dhcp");
 631                         break;
 632                 case CONNMAN_ELEMENT_TYPE_BOOTP:
 633                         element->name = g_strdup("bootp");
 634                         break;
 635                 case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 636                         element->name = g_strdup("zeroconf");
 637                         break;
 638                 case CONNMAN_ELEMENT_TYPE_RESOLVER:
 639                         element->name = g_strdup("resolver");
 640                         break;
 641                 case CONNMAN_ELEMENT_TYPE_INTERNET:
 642                         element->name = g_strdup("internet");
 643                         break;
 644                 default:
 645                         break;
 646                 }
 647         }
 648
 649         element->parent = parent;
 650
 651         connman_element_unlock(element);
 652
 653         if (thread_register != NULL)
 654                 g_thread_pool_push(thread_register, element, NULL);
 655
 656         return 0;
 657 }
 658
 659 void connman_element_unregister(struct connman_element *element)
 660 {
 661         DBG("element %p name %s", element, element->name);
 662
 663         if (thread_unregister != NULL)
 664                 g_thread_pool_push(thread_unregister, element, NULL);
 665 }
 666
 667 void connman_element_update(struct connman_element *element)
 668 {
 669         DBG("element %p name %s", element, element->name);
 670
 671         g_static_rw_lock_reader_lock(&element_lock);
 672
 673         if (element->driver && element->driver->update)
 674                 element->driver->update(element);
 675
 676         g_static_rw_lock_reader_unlock(&element_lock);
 677
 678         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 679                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 680                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 681                                                         DBUS_TYPE_INVALID);
 682 }
 683
 684 static void register_element(gpointer data, gpointer user_data)
 685 {
 686         struct connman_element *element = data;
 687         const gchar *basepath;
 688         GSList *list;
 689         GNode *node;
 690
 691         g_static_rw_lock_writer_lock(&element_lock);
 692
 693         connman_element_lock(element);
 694
 695         if (element->parent) {
 696                 node = g_node_find(element_root, G_PRE_ORDER,
 697                                         G_TRAVERSE_ALL, element->parent);
 698                 basepath = element->parent->path;
 699
 700                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 701                         element->subtype = element->parent->subtype;
 702         } else {
 703                 node = element_root;
 704                 basepath = "";
 705         }
 706
 707         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 708
 709         connman_element_unlock(element);
 710
 711         DBG("element %p path %s", element, element->path);
 712
 713         g_node_append_data(node, element);
 714
 715         if (g_dbus_register_interface(connection, element->path,
 716                                         CONNMAN_ELEMENT_INTERFACE,
 717                                         element_methods, NULL, NULL,
 718                                                 element, NULL) == FALSE)
 719                 connman_error("Failed to register %s", element->path);
 720
 721         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 722                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 723                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 724                                                         DBUS_TYPE_INVALID);
 725
 726         g_static_rw_lock_writer_unlock(&element_lock);
 727
 728         __connman_element_store(element);
 729
 730         g_static_rw_lock_writer_lock(&element_lock);
 731
 732         for (list = driver_list; list; list = list->next) {
 733                 struct connman_driver *driver = list->data;
 734
 735                 if (match_driver(element, driver) == FALSE)
 736                         continue;
 737
 738                 DBG("driver %p name %s", driver, driver->name);
 739
 740                 if (driver->probe(element) < 0)
 741                         continue;
 742
 743                 connman_element_lock(element);
 744                 element->driver = driver;
 745                 connman_element_unlock(element);
 746         }
 747
 748         g_static_rw_lock_writer_unlock(&element_lock);
 749 }
 750
 751 static gboolean remove_element(GNode *node, gpointer user_data)
 752 {
 753         struct connman_element *element = node->data;
 754
 755         DBG("element %p name %s", element, element->name);
 756
 757         if (element->driver) {
 758                 if (element->driver->remove)
 759                         element->driver->remove(element);
 760
 761                 connman_element_lock(element);
 762                 element->driver = NULL;
 763                 connman_element_unlock(element);
 764         }
 765
 766         if (node != NULL) {
 767                 g_node_unlink(node);
 768                 g_node_destroy(node);
 769         }
 770
 771         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 772                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 773                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 774                                                         DBUS_TYPE_INVALID);
 775
 776         g_dbus_unregister_interface(connection, element->path,
 777                                                 CONNMAN_ELEMENT_INTERFACE);
 778
 779         connman_element_unref(element);
 780
 781         return FALSE;
 782 }
 783
 784 static void unregister_element(gpointer data, gpointer user_data)
 785 {
 786         struct connman_element *element = data;
 787         GNode *node;
 788
 789         DBG("element %p name %s", element, element->name);
 790
 791         g_static_rw_lock_writer_lock(&element_lock);
 792
 793         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 794
 795         if (node != NULL)
 796                 g_node_traverse(node, G_POST_ORDER,
 797                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
 798
 799         g_static_rw_lock_writer_unlock(&element_lock);
 800 }
 801
 802 int __connman_element_init(DBusConnection *conn, const char *device)
 803 {
 804         struct connman_element *element;
 805
 806         DBG("conn %p", conn);
 807
 808         connection = dbus_connection_ref(conn);
 809         if (connection == NULL)
 810                 return -EIO;
 811
 812         device_filter = g_strdup(device);
 813
 814         g_static_rw_lock_writer_lock(&element_lock);
 815
 816         element = connman_element_create();
 817
 818         element->name = g_strdup("root");
 819         element->path = g_strdup("/");
 820         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 821
 822         element_root = g_node_new(element);
 823
 824         g_static_rw_lock_writer_unlock(&element_lock);
 825
 826         thread_register = g_thread_pool_new(register_element,
 827                                                         NULL, 1, FALSE, NULL);
 828         thread_unregister = g_thread_pool_new(unregister_element,
 829                                                         NULL, 1, FALSE, NULL);
 830
 831         return 0;
 832 }
 833
 834 static gboolean free_driver(GNode *node, gpointer data)
 835 {
 836         struct connman_element *element = node->data;
 837
 838         DBG("element %p name %s", element, element->name);
 839
 840         if (element->driver) {
 841                 if (element->driver->remove)
 842                         element->driver->remove(element);
 843
 844                 connman_element_lock(element);
 845                 element->driver = NULL;
 846                 connman_element_unlock(element);
 847         }
 848
 849         return FALSE;
 850 }
 851
 852 static gboolean free_node(GNode *node, gpointer data)
 853 {
 854         struct connman_element *element = node->data;
 855
 856         DBG("element %p name %s", element, element->name);
 857
 858         if (g_node_depth(node) > 1)
 859                 g_thread_pool_push(thread_unregister, element, NULL);
 860
 861         return FALSE;
 862 }
 863
 864 void __connman_element_cleanup(void)
 865 {
 866         DBG("");
 867
 868         g_thread_pool_free(thread_register, TRUE, TRUE);
 869         thread_register = NULL;
 870
 871         g_static_rw_lock_writer_lock(&element_lock);
 872         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 873                                                         free_driver, NULL);
 874         g_static_rw_lock_writer_unlock(&element_lock);
 875
 876         g_static_rw_lock_writer_lock(&element_lock);
 877         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 878                                                         free_node, NULL);
 879         g_static_rw_lock_writer_unlock(&element_lock);
 880
 881         g_thread_pool_free(thread_unregister, FALSE, TRUE);
 882         thread_unregister = NULL;
 883
 884         g_static_rw_lock_writer_lock(&element_lock);
 885         g_node_destroy(element_root);
 886         element_root = NULL;
 887         g_static_rw_lock_writer_unlock(&element_lock);
 888
 889         g_free(device_filter);
 890
 891         dbus_connection_unref(connection);
 892 }