vcs.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 static GThreadPool *thread_unregister_children = NULL;
  43
  44 static gchar *device_filter = NULL;
  45
  46 static const char *type2string(enum connman_element_type type)
  47 {
  48         switch (type) {
  49         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  50                 return "unknown";
  51         case CONNMAN_ELEMENT_TYPE_ROOT:
  52                 return "root";
  53         case CONNMAN_ELEMENT_TYPE_DEVICE:
  54                 return "device";
  55         case CONNMAN_ELEMENT_TYPE_NETWORK:
  56                 return "network";
  57         case CONNMAN_ELEMENT_TYPE_IPV4:
  58                 return "ipv4";
  59         case CONNMAN_ELEMENT_TYPE_IPV6:
  60                 return "ipv6";
  61         case CONNMAN_ELEMENT_TYPE_DHCP:
  62                 return "dhcp";
  63         case CONNMAN_ELEMENT_TYPE_BOOTP:
  64                 return "bootp";
  65         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  66                 return "zeroconf";
  67         case CONNMAN_ELEMENT_TYPE_RESOLVER:
  68                 return "resolver";
  69         case CONNMAN_ELEMENT_TYPE_INTERNET:
  70                 return "internet";
  71         }
  72
  73         return NULL;
  74 }
  75
  76 static const char *subtype2string(enum connman_element_subtype type)
  77 {
  78         switch (type) {
  79         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
  80                 return "unknown";
  81         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
  82                 return "ethernet";
  83         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
  84                 return "wifi";
  85         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
  86                 return "wimax";
  87         case CONNMAN_ELEMENT_SUBTYPE_MODEM:
  88                 return "modem";
  89         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
  90                 return "bluetooth";
  91         }
  92
  93         return NULL;
  94 }
  95
  96 static void append_entry(DBusMessageIter *dict,
  97                                 const char *key, int type, void *val)
  98 {
  99         DBusMessageIter entry, value;
 100         const char *signature;
 101
 102         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
 103                                                                 NULL, &entry);
 104
 105         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 106
 107         switch (type) {
 108         case DBUS_TYPE_BOOLEAN:
 109                 signature = DBUS_TYPE_BOOLEAN_AS_STRING;
 110                 break;
 111         case DBUS_TYPE_STRING:
 112                 signature = DBUS_TYPE_STRING_AS_STRING;
 113                 break;
 114         case DBUS_TYPE_UINT16:
 115                 signature = DBUS_TYPE_UINT16_AS_STRING;
 116                 break;
 117         case DBUS_TYPE_UINT32:
 118                 signature = DBUS_TYPE_UINT32_AS_STRING;
 119                 break;
 120         case DBUS_TYPE_OBJECT_PATH:
 121                 signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
 122                 break;
 123         default:
 124                 signature = DBUS_TYPE_VARIANT_AS_STRING;
 125                 break;
 126         }
 127
 128         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 129                                                         signature, &value);
 130         dbus_message_iter_append_basic(&value, type, val);
 131         dbus_message_iter_close_container(&entry, &value);
 132
 133         dbus_message_iter_close_container(dict, &entry);
 134 }
 135
 136 static void append_property(DBusMessageIter *dict,
 137                                 struct connman_property *property)
 138 {
 139         if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC) {
 140                 append_entry(dict, property->name, property->type,
 141                                                         &property->value);
 142                 return;
 143         }
 144 }
 145
 146 static DBusMessage *get_properties(DBusConnection *conn,
 147                                         DBusMessage *msg, void *data)
 148 {
 149         struct connman_element *element = data;
 150         GSList *list;
 151         DBusMessage *reply;
 152         DBusMessageIter array, dict;
 153         const char *str;
 154
 155         DBG("conn %p", conn);
 156
 157         reply = dbus_message_new_method_return(msg);
 158         if (reply == NULL)
 159                 return NULL;
 160
 161         dbus_message_iter_init_append(reply, &array);
 162
 163         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 164                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 165                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 166                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 167
 168         if (element->parent != NULL)
 169                 append_entry(&dict, "Parent",
 170                                 DBUS_TYPE_OBJECT_PATH, &element->parent->path);
 171
 172         str = type2string(element->type);
 173         if (str != NULL)
 174                 append_entry(&dict, "Type", DBUS_TYPE_STRING, &str);
 175         str = subtype2string(element->subtype);
 176         if (str != NULL)
 177                 append_entry(&dict, "Subtype", DBUS_TYPE_STRING, &str);
 178
 179         append_entry(&dict, "Enabled", DBUS_TYPE_BOOLEAN, &element->enabled);
 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_enable(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->enable) {
 245                 DBG("Calling enable callback");
 246                 element->driver->enable(element);
 247         }
 248
 249         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 250 }
 251
 252 static DBusMessage *do_disable(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->disable) {
 263                 DBG("Calling disable callback");
 264                 element->driver->disable(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         { "Enable",        "",   "",      do_enable      },
 275         { "Disable",       "",   "",      do_disable     },
 276         { },
 277 };
 278
 279 static GDBusSignalTable element_signals[] = {
 280         { "PropertyChanged", "sv" },
 281         { },
 282 };
 283
 284 struct append_filter {
 285         enum connman_element_type type;
 286         DBusMessageIter *iter;
 287 };
 288
 289 static gboolean append_path(GNode *node, gpointer data)
 290 {
 291         struct connman_element *element = node->data;
 292         struct append_filter *filter = data;
 293
 294         DBG("element %p name %s", element, element->name);
 295
 296         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 297                 return FALSE;
 298
 299         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 300                                         filter->type != element->type)
 301                 return FALSE;
 302
 303         dbus_message_iter_append_basic(filter->iter,
 304                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 305
 306         return FALSE;
 307 }
 308
 309 void __connman_element_list(enum connman_element_type type,
 310                                                 DBusMessageIter *iter)
 311 {
 312         struct append_filter filter = { type, iter };
 313
 314         DBG("");
 315
 316         g_static_rw_lock_reader_lock(&element_lock);
 317         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 318                                                         append_path, &filter);
 319         g_static_rw_lock_reader_unlock(&element_lock);
 320 }
 321
 322 static gint compare_priority(gconstpointer a, gconstpointer b)
 323 {
 324         const struct connman_driver *driver1 = a;
 325         const struct connman_driver *driver2 = b;
 326
 327         return driver2->priority - driver1->priority;
 328 }
 329
 330 static gboolean match_driver(struct connman_element *element,
 331                                         struct connman_driver *driver)
 332 {
 333         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 334                 return FALSE;
 335
 336         if (element->type != driver->type &&
 337                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 338                 return FALSE;
 339
 340         if (element->subtype == driver->subtype ||
 341                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 342                 return TRUE;
 343
 344         return FALSE;
 345 }
 346
 347 static gboolean probe_driver(GNode *node, gpointer data)
 348 {
 349         struct connman_element *element = node->data;
 350         struct connman_driver *driver = data;
 351
 352         DBG("element %p name %s", element, element->name);
 353
 354         if (!element->driver && match_driver(element, driver) == TRUE) {
 355                 if (driver->probe(element) < 0)
 356                         return FALSE;
 357
 358                 connman_element_lock(element);
 359                 element->driver = driver;
 360                 connman_element_unlock(element);
 361         }
 362
 363         return FALSE;
 364 }
 365
 366 /**
 367  * connman_driver_register:
 368  * @driver: driver definition
 369  *
 370  * Register a new driver
 371  *
 372  * Returns: %0 on success
 373  */
 374 int connman_driver_register(struct connman_driver *driver)
 375 {
 376         DBG("driver %p name %s", driver, driver->name);
 377
 378         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 379                 return -EINVAL;
 380
 381         if (!driver->probe)
 382                 return -EINVAL;
 383
 384         g_static_rw_lock_writer_lock(&element_lock);
 385
 386         driver_list = g_slist_insert_sorted(driver_list, driver,
 387                                                         compare_priority);
 388
 389         if (element_root != NULL)
 390                 g_node_traverse(element_root, G_PRE_ORDER,
 391                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 392
 393         g_static_rw_lock_writer_unlock(&element_lock);
 394
 395         return 0;
 396 }
 397
 398 static gboolean remove_driver(GNode *node, gpointer data)
 399 {
 400         struct connman_element *element = node->data;
 401         struct connman_driver *driver = data;
 402
 403         DBG("element %p name %s", element, element->name);
 404
 405         if (element->driver == driver) {
 406                 if (driver->remove)
 407                         driver->remove(element);
 408
 409                 connman_element_lock(element);
 410                 element->driver = NULL;
 411                 connman_element_unlock(element);
 412         }
 413
 414         return FALSE;
 415 }
 416
 417 /**
 418  * connman_driver_unregister:
 419  * @driver: driver definition
 420  *
 421  * Remove a previously registered driver
 422  */
 423 void connman_driver_unregister(struct connman_driver *driver)
 424 {
 425         DBG("driver %p name %s", driver, driver->name);
 426
 427         g_static_rw_lock_writer_lock(&element_lock);
 428
 429         driver_list = g_slist_remove(driver_list, driver);
 430
 431         if (element_root != NULL)
 432                 g_node_traverse(element_root, G_POST_ORDER,
 433                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 434
 435         g_static_rw_lock_writer_unlock(&element_lock);
 436 }
 437
 438 struct connman_element *connman_element_create(void)
 439 {
 440         struct connman_element *element;
 441
 442         element = g_new0(struct connman_element, 1);
 443
 444         DBG("element %p", element);
 445
 446         element->refcount = 1;
 447
 448         g_static_mutex_init(&element->mutex);
 449
 450         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 451         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 452         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 453
 454         element->enabled = FALSE;
 455
 456         element->netdev.index = -1;
 457
 458         return element;
 459 }
 460
 461 struct connman_element *connman_element_ref(struct connman_element *element)
 462 {
 463         DBG("element %p name %s refcount %d", element, element->name,
 464                                 g_atomic_int_get(&element->refcount) + 1);
 465
 466         g_atomic_int_inc(&element->refcount);
 467
 468         return element;
 469 }
 470
 471 void connman_element_unref(struct connman_element *element)
 472 {
 473         DBG("element %p name %s refcount %d", element, element->name,
 474                                 g_atomic_int_get(&element->refcount) - 1);
 475
 476         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 477                 GSList *list;
 478
 479                 for (list = element->properties; list; list = list->next) {
 480                         struct connman_property *property = list->data;
 481                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 482                                         property->type == DBUS_TYPE_STRING)
 483                                 g_free(property->value);
 484                         g_free(property);
 485                         list->data = NULL;
 486                 }
 487                 g_slist_free(element->properties);
 488
 489                 g_free(element->ipv4.address);
 490                 g_free(element->ipv4.netmask);
 491                 g_free(element->ipv4.gateway);
 492                 g_free(element->ipv4.network);
 493                 g_free(element->ipv4.broadcast);
 494                 g_free(element->ipv4.nameserver);
 495                 g_free(element->network.identifier);
 496                 g_free(element->netdev.name);
 497                 g_free(element->path);
 498                 g_free(element->name);
 499                 g_free(element);
 500         }
 501 }
 502
 503 int connman_element_add_static_property(struct connman_element *element,
 504                                 const char *name, int type, const void *value)
 505 {
 506         struct connman_property *property;
 507
 508         DBG("element %p name %s", element, element->name);
 509
 510         if (type != DBUS_TYPE_STRING)
 511                 return -EINVAL;
 512
 513         property = g_try_new0(struct connman_property, 1);
 514         if (property == NULL)
 515                 return -ENOMEM;
 516
 517         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 518
 519         property->name = g_strdup(name);
 520         property->type = type;
 521
 522         DBG("name %s type %d value %p", name, type, value);
 523
 524         switch (type) {
 525         case DBUS_TYPE_STRING:
 526                 property->value = g_strdup(*((const char **) value));
 527                 break;
 528         }
 529
 530         connman_element_lock(element);
 531         element->properties = g_slist_append(element->properties, property);
 532         connman_element_unlock(element);
 533
 534         return 0;
 535 }
 536
 537 int connman_element_set_property(struct connman_element *element,
 538                         enum connman_property_type type, const void *value)
 539 {
 540         switch (type) {
 541         case CONNMAN_PROPERTY_TYPE_INVALID:
 542                 return -EINVAL;
 543         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 544                 connman_element_lock(element);
 545                 g_free(element->ipv4.address);
 546                 element->ipv4.address = g_strdup(*((const char **) value));
 547                 connman_element_unlock(element);
 548                 break;
 549         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 550                 connman_element_lock(element);
 551                 g_free(element->ipv4.netmask);
 552                 element->ipv4.netmask = g_strdup(*((const char **) value));
 553                 connman_element_unlock(element);
 554                 break;
 555         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 556                 connman_element_lock(element);
 557                 g_free(element->ipv4.gateway);
 558                 element->ipv4.gateway = g_strdup(*((const char **) value));
 559                 connman_element_unlock(element);
 560                 break;
 561         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 562                 connman_element_lock(element);
 563                 g_free(element->ipv4.nameserver);
 564                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 565                 connman_element_unlock(element);
 566                 break;
 567         }
 568
 569         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 570                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 571                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 572                                                         DBUS_TYPE_INVALID);
 573
 574         return 0;
 575 }
 576
 577 int connman_element_get_value(struct connman_element *element,
 578                                 enum connman_property_type type, void *value)
 579 {
 580         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 581                 return -EINVAL;
 582
 583         switch (type) {
 584         case CONNMAN_PROPERTY_TYPE_INVALID:
 585                 return -EINVAL;
 586         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 587                 if (element->ipv4.address == NULL)
 588                         return connman_element_get_value(element->parent,
 589                                                                 type, value);
 590                 connman_element_lock(element);
 591                 *((char **) value) = element->ipv4.address;
 592                 connman_element_unlock(element);
 593                 break;
 594         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 595                 if (element->ipv4.netmask == NULL)
 596                         return connman_element_get_value(element->parent,
 597                                                                 type, value);
 598                 connman_element_lock(element);
 599                 *((char **) value) = element->ipv4.netmask;
 600                 connman_element_unlock(element);
 601                 break;
 602         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 603                 if (element->ipv4.gateway == NULL)
 604                         return connman_element_get_value(element->parent,
 605                                                                 type, value);
 606                 connman_element_lock(element);
 607                 *((char **) value) = element->ipv4.gateway;
 608                 connman_element_unlock(element);
 609                 break;
 610         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 611                 if (element->ipv4.nameserver == NULL)
 612                         return connman_element_get_value(element->parent,
 613                                                                 type, value);
 614                 connman_element_lock(element);
 615                 *((char **) value) = element->ipv4.nameserver;
 616                 connman_element_unlock(element);
 617                 break;
 618         }
 619
 620         return 0;
 621 }
 622
 623 int connman_element_register(struct connman_element *element,
 624                                         struct connman_element *parent)
 625 {
 626         DBG("element %p name %s parent %p", element, element->name, parent);
 627
 628         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
 629                 if (g_str_equal(device_filter, element->netdev.name) == FALSE)
 630                         return -EINVAL;
 631         }
 632
 633         if (connman_element_ref(element) == NULL)
 634                 return -EINVAL;
 635
 636         connman_element_lock(element);
 637
 638         __connman_element_load(element);
 639
 640         if (element->name == NULL) {
 641                 element->name = g_strdup(type2string(element->type));
 642                 if (element->name == NULL)
 643                         return -EINVAL;
 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_unregister_children(struct connman_element *element)
 665 {
 666         DBG("element %p name %s", element, element->name);
 667
 668         if (thread_unregister_children != NULL)
 669                 g_thread_pool_push(thread_unregister_children, element, NULL);
 670 }
 671
 672 static gboolean update_element(GNode *node, gpointer user_data)
 673 {
 674         struct connman_element *element = node->data;
 675
 676         DBG("element %p name %s", element, element->name);
 677
 678         if (element->driver && element->driver->update)
 679                 element->driver->update(element);
 680
 681         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 682                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 683                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 684                                                         DBUS_TYPE_INVALID);
 685
 686         return FALSE;
 687 }
 688
 689 void connman_element_update(struct connman_element *element)
 690 {
 691         GNode *node;
 692
 693         DBG("element %p name %s", element, element->name);
 694
 695         g_static_rw_lock_reader_lock(&element_lock);
 696
 697         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 698
 699         if (node != NULL)
 700                 g_node_traverse(node, G_PRE_ORDER,
 701                                 G_TRAVERSE_ALL, -1, update_element, NULL);
 702
 703         g_static_rw_lock_reader_unlock(&element_lock);
 704 }
 705
 706 static void register_element(gpointer data, gpointer user_data)
 707 {
 708         struct connman_element *element = data;
 709         const gchar *basepath;
 710         GSList *list;
 711         GNode *node;
 712
 713         g_static_rw_lock_writer_lock(&element_lock);
 714
 715         connman_element_lock(element);
 716
 717         if (element->parent) {
 718                 node = g_node_find(element_root, G_PRE_ORDER,
 719                                         G_TRAVERSE_ALL, element->parent);
 720                 basepath = element->parent->path;
 721
 722                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 723                         element->subtype = element->parent->subtype;
 724         } else {
 725                 node = element_root;
 726                 basepath = "";
 727         }
 728
 729         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 730
 731         connman_element_unlock(element);
 732
 733         DBG("element %p path %s", element, element->path);
 734
 735         g_node_append_data(node, element);
 736
 737         if (g_dbus_register_interface(connection, element->path,
 738                                         CONNMAN_ELEMENT_INTERFACE,
 739                                         element_methods, element_signals,
 740                                         NULL, element, NULL) == FALSE)
 741                 connman_error("Failed to register %s", element->path);
 742
 743         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 744                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 745                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 746                                                         DBUS_TYPE_INVALID);
 747
 748         g_static_rw_lock_writer_unlock(&element_lock);
 749
 750         __connman_element_store(element);
 751
 752         g_static_rw_lock_writer_lock(&element_lock);
 753
 754         for (list = driver_list; list; list = list->next) {
 755                 struct connman_driver *driver = list->data;
 756
 757                 if (match_driver(element, driver) == FALSE)
 758                         continue;
 759
 760                 DBG("driver %p name %s", driver, driver->name);
 761
 762                 if (driver->probe(element) == 0) {
 763                         connman_element_lock(element);
 764                         element->driver = driver;
 765                         connman_element_unlock(element);
 766                         break;
 767                 }
 768         }
 769
 770         g_static_rw_lock_writer_unlock(&element_lock);
 771 }
 772
 773 static gboolean remove_element(GNode *node, gpointer user_data)
 774 {
 775         struct connman_element *element = node->data;
 776         struct connman_element *root = user_data;
 777
 778         DBG("element %p name %s", element, element->name);
 779
 780         if (element == root)
 781                 return FALSE;
 782
 783         if (element->driver) {
 784                 if (element->driver->remove)
 785                         element->driver->remove(element);
 786
 787                 connman_element_lock(element);
 788                 element->driver = NULL;
 789                 connman_element_unlock(element);
 790         }
 791
 792         if (node != NULL) {
 793                 g_node_unlink(node);
 794                 g_node_destroy(node);
 795         }
 796
 797         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 798                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 799                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 800                                                         DBUS_TYPE_INVALID);
 801
 802         g_dbus_unregister_interface(connection, element->path,
 803                                                 CONNMAN_ELEMENT_INTERFACE);
 804
 805         connman_element_unref(element);
 806
 807         return FALSE;
 808 }
 809
 810 static void unregister_element(gpointer data, gpointer user_data)
 811 {
 812         struct connman_element *element = data;
 813         GNode *node;
 814
 815         DBG("element %p name %s", element, element->name);
 816
 817         g_static_rw_lock_writer_lock(&element_lock);
 818
 819         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 820
 821         if (node != NULL)
 822                 g_node_traverse(node, G_POST_ORDER,
 823                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
 824
 825         g_static_rw_lock_writer_unlock(&element_lock);
 826 }
 827
 828 static void unregister_children(gpointer data, gpointer user_data)
 829 {
 830         struct connman_element *element = data;
 831         GNode *node;
 832
 833         DBG("element %p name %s", element, element->name);
 834
 835         g_static_rw_lock_writer_lock(&element_lock);
 836
 837         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 838
 839         if (node != NULL)
 840                 g_node_traverse(node, G_POST_ORDER,
 841                                 G_TRAVERSE_ALL, -1, remove_element, element);
 842
 843         g_static_rw_lock_writer_unlock(&element_lock);
 844 }
 845
 846 int __connman_element_init(DBusConnection *conn, const char *device)
 847 {
 848         struct connman_element *element;
 849
 850         DBG("conn %p", conn);
 851
 852         connection = dbus_connection_ref(conn);
 853         if (connection == NULL)
 854                 return -EIO;
 855
 856         device_filter = g_strdup(device);
 857
 858         g_static_rw_lock_writer_lock(&element_lock);
 859
 860         element = connman_element_create();
 861
 862         element->name = g_strdup("root");
 863         element->path = g_strdup("/");
 864         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 865
 866         element_root = g_node_new(element);
 867
 868         g_static_rw_lock_writer_unlock(&element_lock);
 869
 870         thread_register = g_thread_pool_new(register_element,
 871                                                         NULL, 1, FALSE, NULL);
 872         thread_unregister = g_thread_pool_new(unregister_element,
 873                                                         NULL, 1, FALSE, NULL);
 874         thread_unregister_children = g_thread_pool_new(unregister_children,
 875                                                         NULL, 1, FALSE, NULL);
 876
 877         return 0;
 878 }
 879
 880 static gboolean free_driver(GNode *node, gpointer data)
 881 {
 882         struct connman_element *element = node->data;
 883
 884         DBG("element %p name %s", element, element->name);
 885
 886         if (element->driver) {
 887                 if (element->driver->remove)
 888                         element->driver->remove(element);
 889
 890                 connman_element_lock(element);
 891                 element->driver = NULL;
 892                 connman_element_unlock(element);
 893         }
 894
 895         return FALSE;
 896 }
 897
 898 static gboolean free_node(GNode *node, gpointer data)
 899 {
 900         struct connman_element *element = node->data;
 901
 902         DBG("element %p name %s", element, element->name);
 903
 904         if (g_node_depth(node) > 1)
 905                 g_thread_pool_push(thread_unregister, element, NULL);
 906
 907         return FALSE;
 908 }
 909
 910 void __connman_element_cleanup(void)
 911 {
 912         DBG("");
 913
 914         g_thread_pool_free(thread_register, TRUE, TRUE);
 915         thread_register = NULL;
 916
 917         g_static_rw_lock_writer_lock(&element_lock);
 918         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 919                                                         free_driver, NULL);
 920         g_static_rw_lock_writer_unlock(&element_lock);
 921
 922         g_static_rw_lock_writer_lock(&element_lock);
 923         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 924                                                         free_node, NULL);
 925         g_static_rw_lock_writer_unlock(&element_lock);
 926
 927         g_thread_pool_free(thread_unregister, FALSE, TRUE);
 928         thread_unregister = NULL;
 929
 930         g_thread_pool_free(thread_unregister_children, FALSE, TRUE);
 931         thread_unregister_children = NULL;
 932
 933         g_static_rw_lock_writer_lock(&element_lock);
 934         g_node_destroy(element_root);
 935         element_root = NULL;
 936         g_static_rw_lock_writer_unlock(&element_lock);
 937
 938         g_free(device_filter);
 939
 940         dbus_connection_unref(connection);
 941 }