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