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_update(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->update) {
 219                 DBG("Calling update callback");
 220                 element->driver->update(element);
 221         }
 222
 223         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 224 }
 225
 226 static DBusMessage *do_connect(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->connect) {
 237                 DBG("Calling connect callback");
 238                 element->driver->connect(element);
 239         }
 240
 241         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 242 }
 243
 244 static DBusMessage *do_disconnect(DBusConnection *conn,
 245                                         DBusMessage *msg, void *data)
 246 {
 247         struct connman_element *element = data;
 248
 249         DBG("conn %p", conn);
 250
 251         if (element->driver == NULL)
 252                 return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 253
 254         if (element->driver->disconnect) {
 255                 DBG("Calling disconnect callback");
 256                 element->driver->disconnect(element);
 257         }
 258
 259         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 260 }
 261
 262 static GDBusMethodTable element_methods[] = {
 263         { "GetProperties", "", "a{sv}", get_properties },
 264         { "Update",        "", "",      do_update      },
 265         { "Connect",       "", "",      do_connect     },
 266         { "Disconnect",    "", "",      do_disconnect  },
 267         { },
 268 };
 269
 270 struct append_filter {
 271         enum connman_element_type type;
 272         DBusMessageIter *iter;
 273 };
 274
 275 static gboolean append_path(GNode *node, gpointer data)
 276 {
 277         struct connman_element *element = node->data;
 278         struct append_filter *filter = data;
 279
 280         DBG("element %p name %s", element, element->name);
 281
 282         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 283                 return FALSE;
 284
 285         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 286                                         filter->type != element->type)
 287                 return FALSE;
 288
 289         dbus_message_iter_append_basic(filter->iter,
 290                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 291
 292         return FALSE;
 293 }
 294
 295 void __connman_element_list(enum connman_element_type type,
 296                                                 DBusMessageIter *iter)
 297 {
 298         struct append_filter filter = { type, iter };
 299
 300         DBG("");
 301
 302         g_static_rw_lock_reader_lock(&element_lock);
 303         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 304                                                         append_path, &filter);
 305         g_static_rw_lock_reader_unlock(&element_lock);
 306 }
 307
 308 static gint compare_priority(gconstpointer a, gconstpointer b)
 309 {
 310         const struct connman_driver *driver1 = a;
 311         const struct connman_driver *driver2 = b;
 312
 313         return driver2->priority - driver1->priority;
 314 }
 315
 316 static gboolean match_driver(struct connman_element *element,
 317                                         struct connman_driver *driver)
 318 {
 319         if (element->type != driver->type &&
 320                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 321                 return FALSE;
 322
 323         if (element->subtype == driver->subtype ||
 324                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 325                 return TRUE;
 326
 327         return FALSE;
 328 }
 329
 330 static gboolean probe_driver(GNode *node, gpointer data)
 331 {
 332         struct connman_element *element = node->data;
 333         struct connman_driver *driver = data;
 334
 335         DBG("element %p name %s", element, element->name);
 336
 337         if (!element->driver && match_driver(element, driver) == TRUE) {
 338                 if (driver->probe(element) < 0)
 339                         return FALSE;
 340
 341                 connman_element_lock(element);
 342                 element->driver = driver;
 343                 connman_element_unlock(element);
 344         }
 345
 346         return FALSE;
 347 }
 348
 349 int connman_driver_register(struct connman_driver *driver)
 350 {
 351         DBG("driver %p name %s", driver, driver->name);
 352
 353         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 354                 return -EINVAL;
 355
 356         if (!driver->probe)
 357                 return -EINVAL;
 358
 359         g_static_rw_lock_writer_lock(&element_lock);
 360
 361         driver_list = g_slist_insert_sorted(driver_list, driver,
 362                                                         compare_priority);
 363
 364         if (element_root != NULL)
 365                 g_node_traverse(element_root, G_PRE_ORDER,
 366                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 367
 368         g_static_rw_lock_writer_unlock(&element_lock);
 369
 370         return 0;
 371 }
 372
 373 static gboolean remove_driver(GNode *node, gpointer data)
 374 {
 375         struct connman_element *element = node->data;
 376         struct connman_driver *driver = data;
 377
 378         DBG("element %p name %s", element, element->name);
 379
 380         if (element->driver == driver) {
 381                 if (driver->remove)
 382                         driver->remove(element);
 383
 384                 connman_element_lock(element);
 385                 element->driver = NULL;
 386                 connman_element_unlock(element);
 387         }
 388
 389         return FALSE;
 390 }
 391
 392 void connman_driver_unregister(struct connman_driver *driver)
 393 {
 394         DBG("driver %p name %s", driver, driver->name);
 395
 396         g_static_rw_lock_writer_lock(&element_lock);
 397
 398         driver_list = g_slist_remove(driver_list, driver);
 399
 400         if (element_root != NULL)
 401                 g_node_traverse(element_root, G_POST_ORDER,
 402                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 403
 404         g_static_rw_lock_writer_unlock(&element_lock);
 405 }
 406
 407 struct connman_element *connman_element_create(void)
 408 {
 409         struct connman_element *element;
 410
 411         element = g_new0(struct connman_element, 1);
 412
 413         DBG("element %p", element);
 414
 415         element->refcount = 1;
 416
 417         g_static_mutex_init(&element->mutex);
 418
 419         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 420         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 421         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 422
 423         element->connected = FALSE;
 424
 425         element->netdev.index = -1;
 426
 427         return element;
 428 }
 429
 430 struct connman_element *connman_element_ref(struct connman_element *element)
 431 {
 432         DBG("element %p name %s refcount %d", element, element->name,
 433                                 g_atomic_int_get(&element->refcount) + 1);
 434
 435         g_atomic_int_inc(&element->refcount);
 436
 437         return element;
 438 }
 439
 440 void connman_element_unref(struct connman_element *element)
 441 {
 442         DBG("element %p name %s refcount %d", element, element->name,
 443                                 g_atomic_int_get(&element->refcount) - 1);
 444
 445         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 446                 GSList *list;
 447
 448                 for (list = element->properties; list; list = list->next) {
 449                         struct connman_property *property = list->data;
 450                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 451                                         property->type == DBUS_TYPE_STRING)
 452                                 g_free(property->value);
 453                         g_free(property);
 454                         list->data = NULL;
 455                 }
 456                 g_slist_free(element->properties);
 457
 458                 g_free(element->ipv4.address);
 459                 g_free(element->ipv4.netmask);
 460                 g_free(element->ipv4.gateway);
 461                 g_free(element->ipv4.network);
 462                 g_free(element->ipv4.broadcast);
 463                 g_free(element->ipv4.nameserver);
 464                 g_free(element->network.identifier);
 465                 g_free(element->netdev.name);
 466                 g_free(element->path);
 467                 g_free(element->name);
 468                 g_free(element);
 469         }
 470 }
 471
 472 int connman_element_add_static_property(struct connman_element *element,
 473                                 const char *name, int type, const void *value)
 474 {
 475         struct connman_property *property;
 476
 477         DBG("element %p name %s", element, element->name);
 478
 479         if (type != DBUS_TYPE_STRING)
 480                 return -EINVAL;
 481
 482         property = g_try_new0(struct connman_property, 1);
 483         if (property == NULL)
 484                 return -ENOMEM;
 485
 486         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 487
 488         property->name = g_strdup(name);
 489         property->type = type;
 490
 491         DBG("name %s type %d value %p", name, type, value);
 492
 493         switch (type) {
 494         case DBUS_TYPE_STRING:
 495                 property->value = g_strdup(*((const char **) value));
 496                 break;
 497         }
 498
 499         connman_element_lock(element);
 500         element->properties = g_slist_append(element->properties, property);
 501         connman_element_unlock(element);
 502
 503         return 0;
 504 }
 505
 506 int connman_element_set_property(struct connman_element *element,
 507                         enum connman_property_type type, const void *value)
 508 {
 509         switch (type) {
 510         case CONNMAN_PROPERTY_TYPE_INVALID:
 511                 return -EINVAL;
 512         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 513                 connman_element_lock(element);
 514                 g_free(element->ipv4.address);
 515                 element->ipv4.address = g_strdup(*((const char **) value));
 516                 connman_element_unlock(element);
 517                 break;
 518         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 519                 connman_element_lock(element);
 520                 g_free(element->ipv4.netmask);
 521                 element->ipv4.netmask = g_strdup(*((const char **) value));
 522                 connman_element_unlock(element);
 523                 break;
 524         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 525                 connman_element_lock(element);
 526                 g_free(element->ipv4.gateway);
 527                 element->ipv4.gateway = g_strdup(*((const char **) value));
 528                 connman_element_unlock(element);
 529                 break;
 530         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 531                 connman_element_lock(element);
 532                 g_free(element->ipv4.nameserver);
 533                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 534                 connman_element_unlock(element);
 535                 break;
 536         }
 537
 538         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 539                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 540                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 541                                                         DBUS_TYPE_INVALID);
 542
 543         return 0;
 544 }
 545
 546 int connman_element_get_value(struct connman_element *element,
 547                                 enum connman_property_type type, void *value)
 548 {
 549         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 550                 return -EINVAL;
 551
 552         switch (type) {
 553         case CONNMAN_PROPERTY_TYPE_INVALID:
 554                 return -EINVAL;
 555         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 556                 if (element->ipv4.address == NULL)
 557                         return connman_element_get_value(element->parent,
 558                                                                 type, value);
 559                 connman_element_lock(element);
 560                 *((char **) value) = element->ipv4.address;
 561                 connman_element_unlock(element);
 562                 break;
 563         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 564                 if (element->ipv4.netmask == NULL)
 565                         return connman_element_get_value(element->parent,
 566                                                                 type, value);
 567                 connman_element_lock(element);
 568                 *((char **) value) = element->ipv4.netmask;
 569                 connman_element_unlock(element);
 570                 break;
 571         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 572                 if (element->ipv4.gateway == NULL)
 573                         return connman_element_get_value(element->parent,
 574                                                                 type, value);
 575                 connman_element_lock(element);
 576                 *((char **) value) = element->ipv4.gateway;
 577                 connman_element_unlock(element);
 578                 break;
 579         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 580                 if (element->ipv4.nameserver == NULL)
 581                         return connman_element_get_value(element->parent,
 582                                                                 type, value);
 583                 connman_element_lock(element);
 584                 *((char **) value) = element->ipv4.nameserver;
 585                 connman_element_unlock(element);
 586                 break;
 587         }
 588
 589         return 0;
 590 }
 591
 592 int connman_element_register(struct connman_element *element,
 593                                         struct connman_element *parent)
 594 {
 595         DBG("element %p name %s parent %p", element, element->name, parent);
 596
 597         if (connman_element_ref(element) == NULL)
 598                 return -EINVAL;
 599
 600         connman_element_lock(element);
 601
 602         __connman_element_load(element);
 603
 604         if (element->name == NULL) {
 605                 switch (element->type) {
 606                 case CONNMAN_ELEMENT_TYPE_IPV4:
 607                         element->name = g_strdup("ipv4");
 608                         break;
 609                 case CONNMAN_ELEMENT_TYPE_IPV6:
 610                         element->name = g_strdup("ipv6");
 611                         break;
 612                 case CONNMAN_ELEMENT_TYPE_DHCP:
 613                         element->name = g_strdup("dhcp");
 614                         break;
 615                 case CONNMAN_ELEMENT_TYPE_BOOTP:
 616                         element->name = g_strdup("bootp");
 617                         break;
 618                 case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 619                         element->name = g_strdup("zeroconf");
 620                         break;
 621                 case CONNMAN_ELEMENT_TYPE_RESOLVER:
 622                         element->name = g_strdup("resolver");
 623                         break;
 624                 case CONNMAN_ELEMENT_TYPE_INTERNET:
 625                         element->name = g_strdup("internet");
 626                         break;
 627                 default:
 628                         break;
 629                 }
 630         }
 631
 632         element->parent = parent;
 633
 634         connman_element_unlock(element);
 635
 636         if (thread_register != NULL)
 637                 g_thread_pool_push(thread_register, element, NULL);
 638
 639         return 0;
 640 }
 641
 642 void connman_element_unregister(struct connman_element *element)
 643 {
 644         DBG("element %p name %s", element, element->name);
 645
 646         if (thread_unregister != NULL)
 647                 g_thread_pool_push(thread_unregister, element, NULL);
 648 }
 649
 650 void connman_element_update(struct connman_element *element)
 651 {
 652         DBG("element %p name %s", element, element->name);
 653
 654         g_static_rw_lock_reader_lock(&element_lock);
 655
 656         if (element->driver && element->driver->update)
 657                 element->driver->update(element);
 658
 659         g_static_rw_lock_reader_unlock(&element_lock);
 660
 661         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 662                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 663                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 664                                                         DBUS_TYPE_INVALID);
 665 }
 666
 667 static void register_element(gpointer data, gpointer user_data)
 668 {
 669         struct connman_element *element = data;
 670         const gchar *basepath;
 671         GSList *list;
 672         GNode *node;
 673
 674         g_static_rw_lock_writer_lock(&element_lock);
 675
 676         connman_element_lock(element);
 677
 678         if (element->parent) {
 679                 node = g_node_find(element_root, G_PRE_ORDER,
 680                                         G_TRAVERSE_ALL, element->parent);
 681                 basepath = element->parent->path;
 682
 683                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 684                         element->subtype = element->parent->subtype;
 685         } else {
 686                 node = element_root;
 687                 basepath = "";
 688         }
 689
 690         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 691
 692         connman_element_unlock(element);
 693
 694         DBG("element %p path %s", element, element->path);
 695
 696         g_node_append_data(node, element);
 697
 698         g_static_rw_lock_writer_unlock(&element_lock);
 699
 700         __connman_element_store(element);
 701
 702         if (g_dbus_register_interface(connection, element->path,
 703                                         CONNMAN_ELEMENT_INTERFACE,
 704                                         element_methods, NULL, NULL,
 705                                                 element, NULL) == FALSE)
 706                 connman_error("Failed to register %s", element->path);
 707
 708         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 709                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 710                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 711                                                         DBUS_TYPE_INVALID);
 712
 713         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 714                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 715                                 CONNMAN_MANAGER_INTERFACE, "DeviceAdded",
 716                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 717                                                         DBUS_TYPE_INVALID);
 718
 719         g_static_rw_lock_writer_lock(&element_lock);
 720
 721         for (list = driver_list; list; list = list->next) {
 722                 struct connman_driver *driver = list->data;
 723
 724                 if (match_driver(element, driver) == FALSE)
 725                         continue;
 726
 727                 DBG("driver %p name %s", driver, driver->name);
 728
 729                 if (driver->probe(element) < 0)
 730                         continue;
 731
 732                 connman_element_lock(element);
 733                 element->driver = driver;
 734                 connman_element_unlock(element);
 735         }
 736
 737         g_static_rw_lock_writer_unlock(&element_lock);
 738 }
 739
 740 static void unregister_element(gpointer data, gpointer user_data)
 741 {
 742         struct connman_element *element = data;
 743         GNode *node;
 744
 745         DBG("element %p name %s", element, element->name);
 746
 747         g_static_rw_lock_writer_lock(&element_lock);
 748
 749         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 750
 751         if (element->driver) {
 752                 if (element->driver->remove)
 753                         element->driver->remove(element);
 754
 755                 connman_element_lock(element);
 756                 element->driver = NULL;
 757                 connman_element_unlock(element);
 758         }
 759
 760         if (node != NULL) {
 761                 g_node_unlink(node);
 762                 g_node_destroy(node);
 763         }
 764
 765         g_static_rw_lock_writer_unlock(&element_lock);
 766
 767         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 768                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 769                                 CONNMAN_MANAGER_INTERFACE, "DeviceRemoved",
 770                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 771                                                         DBUS_TYPE_INVALID);
 772
 773         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 774                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 775                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 776                                                         DBUS_TYPE_INVALID);
 777
 778         g_dbus_unregister_interface(connection, element->path,
 779                                                 CONNMAN_ELEMENT_INTERFACE);
 780
 781         connman_element_unref(element);
 782 }
 783
 784 int __connman_element_init(DBusConnection *conn)
 785 {
 786         struct connman_element *element;
 787
 788         DBG("conn %p", conn);
 789
 790         connection = dbus_connection_ref(conn);
 791         if (connection == NULL)
 792                 return -EIO;
 793
 794         g_static_rw_lock_writer_lock(&element_lock);
 795
 796         element = connman_element_create();
 797
 798         element->name = g_strdup("root");
 799         element->path = g_strdup("/");
 800         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 801
 802         element_root = g_node_new(element);
 803
 804         g_static_rw_lock_writer_unlock(&element_lock);
 805
 806         thread_register = g_thread_pool_new(register_element,
 807                                                         NULL, 1, FALSE, NULL);
 808         thread_unregister = g_thread_pool_new(unregister_element,
 809                                                         NULL, 1, FALSE, NULL);
 810
 811         return 0;
 812 }
 813
 814 static gboolean free_driver(GNode *node, gpointer data)
 815 {
 816         struct connman_element *element = node->data;
 817
 818         DBG("element %p name %s", element, element->name);
 819
 820         if (element->driver) {
 821                 if (element->driver->remove)
 822                         element->driver->remove(element);
 823
 824                 connman_element_lock(element);
 825                 element->driver = NULL;
 826                 connman_element_unlock(element);
 827         }
 828
 829         return FALSE;
 830 }
 831
 832 static gboolean free_node(GNode *node, gpointer data)
 833 {
 834         struct connman_element *element = node->data;
 835
 836         DBG("element %p name %s", element, element->name);
 837
 838         if (g_node_depth(node) > 1)
 839                 g_thread_pool_push(thread_unregister, element, NULL);
 840
 841         return FALSE;
 842 }
 843
 844 void __connman_element_cleanup(void)
 845 {
 846         DBG("");
 847
 848         g_thread_pool_free(thread_register, TRUE, TRUE);
 849         thread_register = NULL;
 850
 851         g_static_rw_lock_writer_lock(&element_lock);
 852         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 853                                                         free_driver, NULL);
 854         g_static_rw_lock_writer_unlock(&element_lock);
 855
 856         g_static_rw_lock_writer_lock(&element_lock);
 857         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 858                                                         free_node, NULL);
 859         g_static_rw_lock_writer_unlock(&element_lock);
 860
 861         g_thread_pool_free(thread_unregister, FALSE, TRUE);
 862         thread_unregister = NULL;
 863
 864         g_static_rw_lock_writer_lock(&element_lock);
 865         g_node_destroy(element_root);
 866         element_root = NULL;
 867         g_static_rw_lock_writer_unlock(&element_lock);
 868
 869         dbus_connection_unref(connection);
 870 }