src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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 #include <stdarg.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36
  37 static GNode *element_root = NULL;
  38 static GSList *driver_list = NULL;
  39 static gchar *device_filter = NULL;
  40
  41 static gboolean started = FALSE;
  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_PROFILE:
  51                 return "profile";
  52         case CONNMAN_ELEMENT_TYPE_DEVICE:
  53                 return "device";
  54         case CONNMAN_ELEMENT_TYPE_NETWORK:
  55                 return "network";
  56         case CONNMAN_ELEMENT_TYPE_SERVICE:
  57                 return "service";
  58         case CONNMAN_ELEMENT_TYPE_PPP:
  59                 return "ppp";
  60         case CONNMAN_ELEMENT_TYPE_IPV4:
  61                 return "ipv4";
  62         case CONNMAN_ELEMENT_TYPE_IPV6:
  63                 return "ipv6";
  64         case CONNMAN_ELEMENT_TYPE_DHCP:
  65                 return "dhcp";
  66         case CONNMAN_ELEMENT_TYPE_BOOTP:
  67                 return "bootp";
  68         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  69                 return "zeroconf";
  70         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  71                 return "connection";
  72         case CONNMAN_ELEMENT_TYPE_VENDOR:
  73                 return "vendor";
  74         }
  75
  76         return NULL;
  77 }
  78
  79 static void emit_element_signal(DBusConnection *conn, const char *member,
  80                                         struct connman_element *element)
  81 {
  82         DBusMessage *signal;
  83
  84         if (__connman_debug_enabled() == FALSE)
  85                 return;
  86
  87         DBG("conn %p member %s", conn, member);
  88
  89         if (element == NULL)
  90                 return;
  91
  92         signal = dbus_message_new_signal(element->path,
  93                                         CONNMAN_DEBUG_INTERFACE, member);
  94         if (signal == NULL)
  95                 return;
  96
  97         g_dbus_send_message(conn, signal);
  98 }
  99
 100 struct foreach_data {
 101         enum connman_element_type type;
 102         element_cb_t callback;
 103         gpointer user_data;
 104 };
 105
 106 static gboolean foreach_callback(GNode *node, gpointer user_data)
 107 {
 108         struct connman_element *element = node->data;
 109         struct foreach_data *data = user_data;
 110
 111         DBG("element %p name %s", element, element->name);
 112
 113         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 114                 return FALSE;
 115
 116         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 117                                         data->type != element->type)
 118                 return FALSE;
 119
 120         if (data->callback)
 121                 data->callback(element, data->user_data);
 122
 123         return FALSE;
 124 }
 125
 126 void __connman_element_foreach(struct connman_element *element,
 127                                 enum connman_element_type type,
 128                                 element_cb_t callback, gpointer user_data)
 129 {
 130         struct foreach_data data = { type, callback, user_data };
 131         GNode *node;
 132
 133         DBG("");
 134
 135         if (element != NULL) {
 136                 node = g_node_find(element_root, G_PRE_ORDER,
 137                                                 G_TRAVERSE_ALL, element);
 138                 if (node == NULL)
 139                         return;
 140         } else
 141                 node = element_root;
 142
 143         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 144                                                 foreach_callback, &data);
 145 }
 146
 147 struct append_filter {
 148         enum connman_element_type type;
 149         DBusMessageIter *iter;
 150 };
 151
 152 static gboolean append_path(GNode *node, gpointer user_data)
 153 {
 154         struct connman_element *element = node->data;
 155         struct append_filter *filter = user_data;
 156
 157         DBG("element %p name %s", element, element->name);
 158
 159         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 160                 return FALSE;
 161
 162         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 163                                         filter->type != element->type)
 164                 return FALSE;
 165
 166         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 167                         __connman_device_has_driver(element->device) == FALSE)
 168                 return FALSE;
 169
 170         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 171                         __connman_network_has_driver(element->network) == FALSE)
 172                 return FALSE;
 173
 174         dbus_message_iter_append_basic(filter->iter,
 175                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 176
 177         return FALSE;
 178 }
 179
 180 void __connman_element_list(struct connman_element *element,
 181                                         enum connman_element_type type,
 182                                                         DBusMessageIter *iter)
 183 {
 184         struct append_filter filter = { type, iter };
 185         GNode *node;
 186
 187         DBG("");
 188
 189         if (element != NULL) {
 190                 node = g_node_find(element_root, G_PRE_ORDER,
 191                                                 G_TRAVERSE_ALL, element);
 192                 if (node == NULL)
 193                         return;
 194         } else
 195                 node = element_root;
 196
 197         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 198                                                 append_path, &filter);
 199 }
 200
 201 struct count_data {
 202         enum connman_element_type type;
 203         int count;
 204 };
 205
 206 static gboolean count_element(GNode *node, gpointer user_data)
 207 {
 208         struct connman_element *element = node->data;
 209         struct count_data *data = user_data;
 210
 211         DBG("element %p name %s", element, element->name);
 212
 213         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 214                 return FALSE;
 215
 216         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 217                                         data->type != element->type)
 218                 return FALSE;
 219
 220         data->count++;
 221
 222         return FALSE;
 223 }
 224
 225 int __connman_element_count(struct connman_element *element,
 226                                         enum connman_element_type type)
 227 {
 228         struct count_data data = { type, 0 };
 229         GNode *node;
 230
 231         DBG("");
 232
 233         if (element != NULL) {
 234                 node = g_node_find(element_root, G_PRE_ORDER,
 235                                                 G_TRAVERSE_ALL, element);
 236                 if (node == NULL)
 237                         return 0;
 238         } else
 239                 node = element_root;
 240
 241         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 242                                                 count_element, &data);
 243
 244         return data.count;
 245 }
 246
 247 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 248 {
 249         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 250                                                 element->network != NULL)
 251                 return element->network;
 252
 253         if (element->parent == NULL)
 254                 return NULL;
 255
 256         return __connman_element_get_network(element->parent);
 257 }
 258
 259 struct connman_service *__connman_element_get_service(struct connman_element *element)
 260 {
 261         struct connman_service *service = NULL;
 262         struct connman_network *network;
 263         struct connman_device *device;
 264         enum connman_device_type type;
 265
 266         device = __connman_element_get_device(element);
 267         if (device == NULL)
 268                 return NULL;
 269
 270         type = connman_device_get_type(device);
 271
 272         switch (type) {
 273         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 274         case CONNMAN_DEVICE_TYPE_VENDOR:
 275         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 276         case CONNMAN_DEVICE_TYPE_GPS:
 277         case CONNMAN_DEVICE_TYPE_HSO:
 278         case CONNMAN_DEVICE_TYPE_NOZOMI:
 279         case CONNMAN_DEVICE_TYPE_HUAWEI:
 280         case CONNMAN_DEVICE_TYPE_NOVATEL:
 281                 break;
 282         case CONNMAN_DEVICE_TYPE_ETHERNET:
 283                 service = __connman_service_lookup_from_device(device);
 284                 break;
 285         case CONNMAN_DEVICE_TYPE_WIFI:
 286         case CONNMAN_DEVICE_TYPE_WIMAX:
 287                 network = __connman_element_get_network(element);
 288                 if (network == NULL)
 289                         return NULL;
 290                 service = __connman_service_lookup_from_network(network);
 291                 break;
 292         }
 293
 294         return service;
 295 }
 296
 297 struct connman_device *__connman_element_get_device(struct connman_element *element)
 298 {
 299         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 300                                                 element->device != NULL)
 301                 return element->device;
 302
 303         if (element->parent == NULL)
 304                 return NULL;
 305
 306         return __connman_element_get_device(element->parent);
 307 }
 308
 309 const char *__connman_element_get_device_path(struct connman_element *element)
 310 {
 311         struct connman_device *device;
 312
 313         device = __connman_element_get_device(element);
 314         if (device == NULL)
 315                 return NULL;
 316
 317         return connman_device_get_path(device);
 318 }
 319
 320 const char *__connman_element_get_network_path(struct connman_element *element)
 321 {
 322         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 323                                                 element->network != NULL)
 324                 return element->path;
 325
 326         if (element->parent == NULL)
 327                 return NULL;
 328
 329         return __connman_element_get_network_path(element->parent);
 330 }
 331
 332 static gint compare_priority(gconstpointer a, gconstpointer b)
 333 {
 334         const struct connman_driver *driver1 = a;
 335         const struct connman_driver *driver2 = b;
 336
 337         return driver2->priority - driver1->priority;
 338 }
 339
 340 static gboolean match_driver(struct connman_element *element,
 341                                         struct connman_driver *driver)
 342 {
 343         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 344                 return FALSE;
 345
 346         if (element->type == driver->type ||
 347                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 348                 return TRUE;
 349
 350         return FALSE;
 351 }
 352
 353 static gboolean probe_driver(GNode *node, gpointer data)
 354 {
 355         struct connman_element *element = node->data;
 356         struct connman_driver *driver = data;
 357
 358         DBG("element %p name %s", element, element->name);
 359
 360         if (!element->driver && match_driver(element, driver) == TRUE) {
 361                 if (driver->probe(element) < 0)
 362                         return FALSE;
 363
 364                 __connman_element_lock(element);
 365                 element->driver = driver;
 366                 __connman_element_unlock(element);
 367         }
 368
 369         return FALSE;
 370 }
 371
 372 void __connman_driver_rescan(struct connman_driver *driver)
 373 {
 374         DBG("driver %p name %s", driver, driver->name);
 375
 376         if (!driver->probe)
 377                 return;
 378
 379         if (element_root != NULL)
 380                 g_node_traverse(element_root, G_PRE_ORDER,
 381                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 382 }
 383
 384 /**
 385  * connman_driver_register:
 386  * @driver: driver definition
 387  *
 388  * Register a new driver
 389  *
 390  * Returns: %0 on success
 391  */
 392 int connman_driver_register(struct connman_driver *driver)
 393 {
 394         DBG("driver %p name %s", driver, driver->name);
 395
 396         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 397                 return -EINVAL;
 398
 399         if (!driver->probe)
 400                 return -EINVAL;
 401
 402         driver_list = g_slist_insert_sorted(driver_list, driver,
 403                                                         compare_priority);
 404
 405         if (started == FALSE)
 406                 return 0;
 407
 408         if (element_root != NULL)
 409                 g_node_traverse(element_root, G_PRE_ORDER,
 410                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 411
 412         return 0;
 413 }
 414
 415 static gboolean remove_driver(GNode *node, gpointer data)
 416 {
 417         struct connman_element *element = node->data;
 418         struct connman_driver *driver = data;
 419
 420         DBG("element %p name %s", element, element->name);
 421
 422         if (element->driver == driver) {
 423                 if (driver->remove)
 424                         driver->remove(element);
 425
 426                 __connman_element_lock(element);
 427                 element->driver = NULL;
 428                 __connman_element_unlock(element);
 429         }
 430
 431         return FALSE;
 432 }
 433
 434 /**
 435  * connman_driver_unregister:
 436  * @driver: driver definition
 437  *
 438  * Remove a previously registered driver
 439  */
 440 void connman_driver_unregister(struct connman_driver *driver)
 441 {
 442         DBG("driver %p name %s", driver, driver->name);
 443
 444         driver_list = g_slist_remove(driver_list, driver);
 445
 446         if (element_root != NULL)
 447                 g_node_traverse(element_root, G_POST_ORDER,
 448                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 449 }
 450
 451 static void unregister_property(gpointer data)
 452 {
 453         struct connman_property *property = data;
 454
 455         DBG("property %p", property);
 456
 457         g_free(property->value);
 458         g_free(property);
 459 }
 460
 461 void __connman_element_initialize(struct connman_element *element)
 462 {
 463         DBG("element %p", element);
 464
 465         element->refcount = 1;
 466
 467         element->name    = NULL;
 468         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 469         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 470         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 471         element->index   = -1;
 472         element->enabled = FALSE;
 473
 474         element->configuring = FALSE;
 475
 476         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 477                                                 g_free, unregister_property);
 478 }
 479
 480 /**
 481  * connman_element_create:
 482  * @name: element name
 483  *
 484  * Allocate a new element and assign the given #name to it. If the name
 485  * is #NULL, it will be later on created based on the element type.
 486  *
 487  * Returns: a newly-allocated #connman_element structure
 488  */
 489 struct connman_element *connman_element_create(const char *name)
 490 {
 491         struct connman_element *element;
 492
 493         element = g_try_new0(struct connman_element, 1);
 494         if (element == NULL)
 495                 return NULL;
 496
 497         DBG("element %p", element);
 498
 499         __connman_element_initialize(element);
 500
 501         return element;
 502 }
 503
 504 struct connman_element *connman_element_ref(struct connman_element *element)
 505 {
 506         DBG("element %p name %s refcount %d", element, element->name,
 507                                 g_atomic_int_get(&element->refcount) + 1);
 508
 509         g_atomic_int_inc(&element->refcount);
 510
 511         return element;
 512 }
 513
 514 static void free_properties(struct connman_element *element)
 515 {
 516         DBG("element %p name %s", element, element->name);
 517
 518         __connman_element_lock(element);
 519
 520         g_hash_table_destroy(element->properties);
 521         element->properties = NULL;
 522
 523         __connman_element_unlock(element);
 524 }
 525
 526 void connman_element_unref(struct connman_element *element)
 527 {
 528         DBG("element %p name %s refcount %d", element, element->name,
 529                                 g_atomic_int_get(&element->refcount) - 1);
 530
 531         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 532                 if (element->destruct)
 533                         element->destruct(element);
 534                 free_properties(element);
 535                 g_free(element->ipv4.address);
 536                 g_free(element->ipv4.netmask);
 537                 g_free(element->ipv4.gateway);
 538                 g_free(element->ipv4.network);
 539                 g_free(element->ipv4.broadcast);
 540                 g_free(element->ipv4.nameserver);
 541                 g_free(element->devname);
 542                 g_free(element->path);
 543                 g_free(element->name);
 544                 g_free(element);
 545         }
 546 }
 547
 548 static int set_static_property(struct connman_element *element,
 549                                 const char *name, int type, const void *value)
 550 {
 551         struct connman_property *property;
 552
 553         DBG("element %p name %s", element, element->name);
 554
 555         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 556                 return -EINVAL;
 557
 558         property = g_try_new0(struct connman_property, 1);
 559         if (property == NULL)
 560                 return -ENOMEM;
 561
 562         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 563         property->type = type;
 564
 565         DBG("name %s type %d value %p", name, type, value);
 566
 567         switch (type) {
 568         case DBUS_TYPE_STRING:
 569                 property->value = g_strdup(*((const char **) value));
 570                 break;
 571         case DBUS_TYPE_BYTE:
 572                 property->value = g_try_malloc(1);
 573                 if (property->value != NULL)
 574                         memcpy(property->value, value, 1);
 575                 break;
 576         }
 577
 578         __connman_element_lock(element);
 579
 580         g_hash_table_replace(element->properties, g_strdup(name), property);
 581
 582         __connman_element_unlock(element);
 583
 584         return 0;
 585 }
 586
 587 static int set_static_array_property(struct connman_element *element,
 588                         const char *name, int type, const void *value, int len)
 589 {
 590         struct connman_property *property;
 591
 592         DBG("element %p name %s", element, element->name);
 593
 594         if (type != DBUS_TYPE_BYTE)
 595                 return -EINVAL;
 596
 597         property = g_try_new0(struct connman_property, 1);
 598         if (property == NULL)
 599                 return -ENOMEM;
 600
 601         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 602         property->type    = DBUS_TYPE_ARRAY;
 603         property->subtype = type;
 604
 605         DBG("name %s type %d value %p", name, type, value);
 606
 607         switch (type) {
 608         case DBUS_TYPE_BYTE:
 609                 property->value = g_try_malloc(len);
 610                 if (property->value != NULL) {
 611                         memcpy(property->value,
 612                                 *((const unsigned char **) value), len);
 613                         property->size = len;
 614                 }
 615                 break;
 616         }
 617
 618         __connman_element_lock(element);
 619
 620         g_hash_table_replace(element->properties, g_strdup(name), property);
 621
 622         __connman_element_unlock(element);
 623
 624         return 0;
 625 }
 626
 627 #if 0
 628 static int set_property(struct connman_element *element,
 629                                 enum connman_property_id id, const void *value)
 630 {
 631         switch (id) {
 632         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 633                 __connman_element_lock(element);
 634                 g_free(element->ipv4.address);
 635                 element->ipv4.address = g_strdup(*((const char **) value));
 636                 __connman_element_unlock(element);
 637                 break;
 638         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 639                 __connman_element_lock(element);
 640                 g_free(element->ipv4.netmask);
 641                 element->ipv4.netmask = g_strdup(*((const char **) value));
 642                 __connman_element_unlock(element);
 643                 break;
 644         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 645                 __connman_element_lock(element);
 646                 g_free(element->ipv4.gateway);
 647                 element->ipv4.gateway = g_strdup(*((const char **) value));
 648                 __connman_element_unlock(element);
 649                 break;
 650         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 651                 __connman_element_lock(element);
 652                 g_free(element->ipv4.broadcast);
 653                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 654                 __connman_element_unlock(element);
 655                 break;
 656         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 657                 __connman_element_lock(element);
 658                 g_free(element->ipv4.nameserver);
 659                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 660                 __connman_element_unlock(element);
 661                 break;
 662         default:
 663                 return -EINVAL;
 664         }
 665
 666         return 0;
 667 }
 668 #endif
 669
 670 int connman_element_get_value(struct connman_element *element,
 671                                 enum connman_property_id id, void *value)
 672 {
 673         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 674                 return -EINVAL;
 675
 676         switch (id) {
 677         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 678                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 679                         return connman_element_get_value(element->parent,
 680                                                                 id, value);
 681                 __connman_element_lock(element);
 682                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 683                 __connman_element_unlock(element);
 684                 break;
 685         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 686                 if (element->ipv4.address == NULL)
 687                         return connman_element_get_value(element->parent,
 688                                                                 id, value);
 689                 __connman_element_lock(element);
 690                 *((char **) value) = element->ipv4.address;
 691                 __connman_element_unlock(element);
 692                 break;
 693         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 694                 if (element->ipv4.netmask == NULL)
 695                         return connman_element_get_value(element->parent,
 696                                                                 id, value);
 697                 __connman_element_lock(element);
 698                 *((char **) value) = element->ipv4.netmask;
 699                 __connman_element_unlock(element);
 700                 break;
 701         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 702                 if (element->ipv4.gateway == NULL)
 703                         return connman_element_get_value(element->parent,
 704                                                                 id, value);
 705                 __connman_element_lock(element);
 706                 *((char **) value) = element->ipv4.gateway;
 707                 __connman_element_unlock(element);
 708                 break;
 709         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 710                 if (element->ipv4.broadcast == NULL)
 711                         return connman_element_get_value(element->parent,
 712                                                                 id, value);
 713                 __connman_element_lock(element);
 714                 *((char **) value) = element->ipv4.broadcast;
 715                 __connman_element_unlock(element);
 716                 break;
 717         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 718                 if (element->ipv4.nameserver == NULL)
 719                         return connman_element_get_value(element->parent,
 720                                                                 id, value);
 721                 __connman_element_lock(element);
 722                 *((char **) value) = element->ipv4.nameserver;
 723                 __connman_element_unlock(element);
 724                 break;
 725         default:
 726                 return -EINVAL;
 727         }
 728
 729         return 0;
 730 }
 731
 732 static gboolean get_static_property(struct connman_element *element,
 733                                                 const char *name, void *value)
 734 {
 735         struct connman_property *property;
 736         gboolean found = FALSE;
 737
 738         DBG("element %p name %s", element, element->name);
 739
 740         __connman_element_lock(element);
 741
 742         property = g_hash_table_lookup(element->properties, name);
 743         if (property != NULL) {
 744                 switch (property->type) {
 745                 case DBUS_TYPE_STRING:
 746                         *((char **) value) = property->value;
 747                         found = TRUE;
 748                         break;
 749                 case DBUS_TYPE_BYTE:
 750                         memcpy(value, property->value, 1);
 751                         found = TRUE;
 752                         break;
 753                 }
 754         }
 755
 756         __connman_element_unlock(element);
 757
 758         if (found == FALSE && element->parent != NULL)
 759                 return get_static_property(element->parent, name, value);
 760
 761         return found;
 762 }
 763
 764 static gboolean get_static_array_property(struct connman_element *element,
 765                         const char *name, void *value, unsigned int *len)
 766 {
 767         struct connman_property *property;
 768         gboolean found = FALSE;
 769
 770         DBG("element %p name %s", element, element->name);
 771
 772         __connman_element_lock(element);
 773
 774         property = g_hash_table_lookup(element->properties, name);
 775         if (property != NULL) {
 776                 *((char **) value) = property->value;
 777                 *len = property->size;
 778                 found = TRUE;
 779         }
 780
 781         __connman_element_unlock(element);
 782
 783         return found;
 784 }
 785
 786 #if 0
 787 static gboolean match_static_property(struct connman_element *element,
 788                                         const char *name, const void *value)
 789 {
 790         struct connman_property *property;
 791         gboolean result = FALSE;
 792
 793         DBG("element %p name %s", element, element->name);
 794
 795         __connman_element_lock(element);
 796
 797         property = g_hash_table_lookup(element->properties, name);
 798         if (property != NULL) {
 799                 if (property->type == DBUS_TYPE_STRING)
 800                         result = g_str_equal(property->value,
 801                                                 *((const char **) value));
 802         }
 803
 804         __connman_element_unlock(element);
 805
 806         return result;
 807 }
 808 #endif
 809
 810 /**
 811  * connman_element_set_string:
 812  * @element: element structure
 813  * @key: unique identifier
 814  * @value: string value
 815  *
 816  * Set string value for specific key
 817  */
 818 int connman_element_set_string(struct connman_element *element,
 819                                         const char *key, const char *value)
 820 {
 821         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 822 }
 823
 824 /**
 825  * connman_element_get_string:
 826  * @element: element structure
 827  * @key: unique identifier
 828  *
 829  * Get string value for specific key
 830  */
 831 const char *connman_element_get_string(struct connman_element *element,
 832                                                         const char *key)
 833 {
 834         const char *value;
 835
 836         if (get_static_property(element, key, &value) == FALSE)
 837                 return NULL;
 838
 839         return value;
 840 }
 841
 842 /**
 843  * connman_element_set_uint8:
 844  * @element: element structure
 845  * @key: unique identifier
 846  * @value: integer value
 847  *
 848  * Set integer value for specific key
 849  */
 850 int connman_element_set_uint8(struct connman_element *element,
 851                                         const char *key, connman_uint8_t value)
 852 {
 853         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 854 }
 855
 856 /**
 857  * connman_element_get_uint8:
 858  * @element: element structure
 859  * @key: unique identifier
 860  *
 861  * Get integer value for specific key
 862  */
 863 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 864                                                         const char *key)
 865 {
 866         connman_uint8_t value;
 867
 868         if (get_static_property(element, key, &value) == FALSE)
 869                 return 0;
 870
 871         return value;
 872 }
 873
 874 /**
 875  * connman_element_set_blob:
 876  * @element: element structure
 877  * @key: unique identifier
 878  * @data: blob data
 879  * @size: blob size
 880  *
 881  * Set binary blob value for specific key
 882  */
 883 int connman_element_set_blob(struct connman_element *element,
 884                         const char *key, const void *data, unsigned int size)
 885 {
 886         return set_static_array_property(element, key,
 887                                                 DBUS_TYPE_BYTE, &data, size);
 888 }
 889
 890 /**
 891  * connman_element_get_blob:
 892  * @element: element structure
 893  * @key: unique identifier
 894  * @size: pointer to blob size
 895  *
 896  * Get binary blob value for specific key
 897  */
 898 const void *connman_element_get_blob(struct connman_element *element,
 899                                         const char *key, unsigned int *size)
 900 {
 901         void *value;
 902
 903         if (get_static_array_property(element, key, &value, size) == FALSE)
 904                 return NULL;
 905
 906         return value;
 907 }
 908
 909 int __connman_element_append_ipv4(struct connman_element *element,
 910                                                 DBusMessageIter *dict)
 911 {
 912         const char *method = NULL;
 913         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 914         const char *broadcast = NULL, *nameserver = NULL;
 915
 916         connman_element_get_value(element,
 917                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
 918
 919         connman_element_get_value(element,
 920                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 921         connman_element_get_value(element,
 922                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 923         connman_element_get_value(element,
 924                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 925         connman_element_get_value(element,
 926                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
 927         connman_element_get_value(element,
 928                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
 929
 930         if (method != NULL)
 931                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
 932                                                 DBUS_TYPE_STRING, &method);
 933
 934         if (address != NULL)
 935                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 936                                                 DBUS_TYPE_STRING, &address);
 937
 938         if (netmask != NULL)
 939                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 940                                                 DBUS_TYPE_STRING, &netmask);
 941
 942         if (gateway != NULL)
 943                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 944                                                 DBUS_TYPE_STRING, &gateway);
 945
 946         if (broadcast != NULL)
 947                 connman_dbus_dict_append_variant(dict, "IPv4.Broadcast",
 948                                                 DBUS_TYPE_STRING, &broadcast);
 949
 950         if (nameserver != NULL)
 951                 connman_dbus_dict_append_variant(dict, "IPv4.Nameserver",
 952                                                 DBUS_TYPE_STRING, &nameserver);
 953
 954         return 0;
 955 }
 956
 957 int __connman_element_set_ipv4(struct connman_element *element,
 958                                 const char *name, DBusMessageIter *value)
 959 {
 960         int type;
 961
 962         type = dbus_message_iter_get_arg_type(value);
 963
 964         if (g_str_equal(name, "IPv4.Method") == TRUE) {
 965                 enum connman_ipconfig_method method;
 966                 const char *str;
 967
 968                 if (type != DBUS_TYPE_STRING)
 969                         return -EINVAL;
 970
 971                 dbus_message_iter_get_basic(value, &str);
 972                 method = __connman_ipconfig_string2method(str);
 973                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 974                         return -EINVAL;
 975
 976                 if (method == element->ipv4.method)
 977                         return -EALREADY;
 978
 979                 element->ipv4.method = method;
 980
 981                 connman_element_update(element);
 982         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
 983                 const char *address;
 984
 985                 if (type != DBUS_TYPE_STRING)
 986                         return -EINVAL;
 987
 988                 dbus_message_iter_get_basic(value, &address);
 989
 990                 g_free(element->ipv4.address);
 991                 element->ipv4.address = g_strdup(address);
 992
 993                 connman_element_update(element);
 994         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
 995                 const char *netmask;
 996
 997                 if (type != DBUS_TYPE_STRING)
 998                         return -EINVAL;
 999
1000                 dbus_message_iter_get_basic(value, &netmask);
1001
1002                 g_free(element->ipv4.netmask);
1003                 element->ipv4.netmask = g_strdup(netmask);
1004
1005                 connman_element_update(element);
1006         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1007                 const char *gateway;
1008
1009                 if (type != DBUS_TYPE_STRING)
1010                         return -EINVAL;
1011
1012                 dbus_message_iter_get_basic(value, &gateway);
1013
1014                 g_free(element->ipv4.gateway);
1015                 element->ipv4.gateway = g_strdup(gateway);
1016
1017                 connman_element_update(element);
1018         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1019                 const char *broadcast;
1020
1021                 if (type != DBUS_TYPE_STRING)
1022                         return -EINVAL;
1023
1024                 dbus_message_iter_get_basic(value, &broadcast);
1025
1026                 g_free(element->ipv4.broadcast);
1027                 element->ipv4.broadcast = g_strdup(broadcast);
1028
1029                 connman_element_update(element);
1030         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1031                 const char *nameserver;
1032
1033                 if (type != DBUS_TYPE_STRING)
1034                         return -EINVAL;
1035
1036                 dbus_message_iter_get_basic(value, &nameserver);
1037
1038                 g_free(element->ipv4.nameserver);
1039                 element->ipv4.nameserver = g_strdup(nameserver);
1040
1041                 connman_element_update(element);
1042         }
1043
1044         return 0;
1045 }
1046
1047 static void append_state(DBusMessageIter *entry, const char *state)
1048 {
1049         DBusMessageIter value;
1050         const char *key = "State";
1051
1052         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1053
1054         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1055                                         DBUS_TYPE_STRING_AS_STRING, &value);
1056         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1057         dbus_message_iter_close_container(entry, &value);
1058 }
1059
1060 static void emit_state_change(DBusConnection *conn, const char *state)
1061 {
1062         DBusMessage *signal;
1063         DBusMessageIter entry;
1064
1065         DBG("conn %p", conn);
1066
1067         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1068                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1069         if (signal == NULL)
1070                 return;
1071
1072         dbus_message_iter_init_append(signal, &entry);
1073
1074         append_state(&entry, state);
1075
1076         g_dbus_send_message(conn, signal);
1077
1078         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1079                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1080         if (signal == NULL)
1081                 return;
1082
1083         dbus_message_iter_init_append(signal, &entry);
1084         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &state);
1085
1086         g_dbus_send_message(conn, signal);
1087 }
1088
1089 static void probe_element(struct connman_element *element)
1090 {
1091         GSList *list;
1092
1093         DBG("element %p name %s", element, element->name);
1094
1095         for (list = driver_list; list; list = list->next) {
1096                 struct connman_driver *driver = list->data;
1097
1098                 if (match_driver(element, driver) == FALSE)
1099                         continue;
1100
1101                 DBG("driver %p name %s", driver, driver->name);
1102
1103                 if (driver->probe(element) == 0) {
1104                         __connman_element_lock(element);
1105                         element->driver = driver;
1106                         __connman_element_unlock(element);
1107                         break;
1108                 }
1109         }
1110 }
1111
1112 static void register_element(gpointer data, gpointer user_data)
1113 {
1114         struct connman_element *element = data;
1115         const gchar *basepath;
1116         GNode *node;
1117
1118         __connman_element_lock(element);
1119
1120         if (element->parent) {
1121                 node = g_node_find(element_root, G_PRE_ORDER,
1122                                         G_TRAVERSE_ALL, element->parent);
1123                 basepath = element->parent->path;
1124         } else {
1125                 element->parent = element_root->data;
1126
1127                 node = element_root;
1128                 basepath = "/device";
1129         }
1130
1131         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1132
1133         __connman_element_unlock(element);
1134
1135         if (node == NULL) {
1136                 connman_error("Element registration for %s failed",
1137                                                         element->path);
1138                 return;
1139         }
1140
1141         DBG("element %p path %s", element, element->path);
1142
1143         g_node_append_data(node, element);
1144
1145         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1146                 element->parent->configuring = TRUE;
1147
1148                 if (__connman_element_count(NULL,
1149                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1150                         emit_state_change(connection, "connecting");
1151         }
1152
1153         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1154                 struct connman_element *parent = element->parent;
1155
1156                 while (parent) {
1157                         parent->configuring = FALSE;
1158                         parent = parent->parent;
1159                 }
1160
1161                 if (__connman_element_count(NULL,
1162                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1163                         emit_state_change(connection, "online");
1164         }
1165
1166         emit_element_signal(connection, "ElementAdded", element);
1167
1168         if (started == FALSE)
1169                 return;
1170
1171         probe_element(element);
1172 }
1173
1174 /**
1175  * connman_element_register:
1176  * @element: the element to register
1177  * @parent: the parent to register the element with
1178  *
1179  * Register an element with the core. It will be register under the given
1180  * parent of if %NULL is provided under the root element.
1181  *
1182  * Returns: %0 on success
1183  */
1184 int connman_element_register(struct connman_element *element,
1185                                         struct connman_element *parent)
1186 {
1187         DBG("element %p name %s parent %p", element, element->name, parent);
1188
1189         if (element->devname == NULL)
1190                 element->devname = g_strdup(element->name);
1191
1192         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1193                 if (g_pattern_match_simple(device_filter,
1194                                                 element->devname) == FALSE) {
1195                         DBG("ignoring %s [%s] device", element->name,
1196                                                         element->devname);
1197                         return -EPERM;
1198                 }
1199         }
1200
1201         if (connman_element_ref(element) == NULL)
1202                 return -EINVAL;
1203
1204         __connman_element_lock(element);
1205
1206         if (element->name == NULL) {
1207                 element->name = g_strdup(type2string(element->type));
1208                 if (element->name == NULL) {
1209                         __connman_element_unlock(element);
1210                         return -EINVAL;
1211                 }
1212         }
1213
1214         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1215                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1216
1217         element->parent = parent;
1218
1219         __connman_element_unlock(element);
1220
1221         register_element(element, NULL);
1222
1223         return 0;
1224 }
1225
1226 static gboolean remove_element(GNode *node, gpointer user_data)
1227 {
1228         struct connman_element *element = node->data;
1229         struct connman_element *root = user_data;
1230
1231         DBG("element %p name %s", element, element->name);
1232
1233         if (element == root)
1234                 return FALSE;
1235
1236         if (node != NULL)
1237                 g_node_unlink(node);
1238
1239         if (element->driver) {
1240                 if (element->driver->remove)
1241                         element->driver->remove(element);
1242
1243                 __connman_element_lock(element);
1244                 element->driver = NULL;
1245                 __connman_element_unlock(element);
1246         }
1247
1248         if (node != NULL)
1249                 g_node_destroy(node);
1250
1251         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1252                 if (__connman_element_count(NULL,
1253                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1254                         emit_state_change(connection, "offline");
1255         }
1256
1257         emit_element_signal(connection, "ElementRemoved", element);
1258
1259         connman_element_unref(element);
1260
1261         return FALSE;
1262 }
1263
1264 void connman_element_unregister(struct connman_element *element)
1265 {
1266         GNode *node;
1267
1268         DBG("element %p name %s", element, element->name);
1269
1270         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1271
1272         if (node != NULL)
1273                 g_node_traverse(node, G_POST_ORDER,
1274                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1275 }
1276
1277 void connman_element_unregister_children(struct connman_element *element)
1278 {
1279         GNode *node;
1280
1281         DBG("element %p name %s", element, element->name);
1282
1283         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1284
1285         if (node != NULL)
1286                 g_node_traverse(node, G_POST_ORDER,
1287                                 G_TRAVERSE_ALL, -1, remove_element, element);
1288 }
1289
1290 static gboolean update_element(GNode *node, gpointer user_data)
1291 {
1292         struct connman_element *element = node->data;
1293
1294         DBG("element %p name %s", element, element->name);
1295
1296         if (element->driver && element->driver->update)
1297                 element->driver->update(element);
1298
1299         emit_element_signal(connection, "ElementUpdated", element);
1300
1301         return FALSE;
1302 }
1303
1304 void connman_element_update(struct connman_element *element)
1305 {
1306         GNode *node;
1307
1308         DBG("element %p name %s", element, element->name);
1309
1310         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1311
1312         if (node != NULL)
1313                 g_node_traverse(node, G_PRE_ORDER,
1314                                 G_TRAVERSE_ALL, -1, update_element, element);
1315 }
1316
1317 int connman_element_set_enabled(struct connman_element *element,
1318                                                         gboolean enabled)
1319 {
1320         if (element->enabled == enabled)
1321                 return 0;
1322
1323         element->enabled = enabled;
1324
1325         connman_element_update(element);
1326
1327         return 0;
1328 }
1329
1330 static enum connman_service_error convert_error(enum connman_element_error error)
1331 {
1332         switch (error) {
1333         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1334         case CONNMAN_ELEMENT_ERROR_FAILED:
1335                 break;
1336         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1337                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1338         }
1339
1340         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1341 }
1342
1343 /**
1344  * connman_element_set_error:
1345  * @element: element structure
1346  * @error: error identifier
1347  *
1348  * Set error state and specific error identifier
1349  */
1350 void connman_element_set_error(struct connman_element *element,
1351                                         enum connman_element_error error)
1352 {
1353         struct connman_service *service;
1354
1355         DBG("element %p error %d", element, error);
1356
1357         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1358                 return;
1359
1360         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1361         element->error = error;
1362
1363         if (element->driver && element->driver->change)
1364                 element->driver->change(element);
1365
1366         service = __connman_element_get_service(element);
1367         __connman_service_indicate_error(service, convert_error(error));
1368 }
1369
1370 int __connman_element_init(DBusConnection *conn, const char *device,
1371                                                         const char *nodevice)
1372 {
1373         struct connman_element *element;
1374
1375         DBG("conn %p", conn);
1376
1377         connection = dbus_connection_ref(conn);
1378         if (connection == NULL)
1379                 return -EIO;
1380
1381         device_filter = g_strdup(device);
1382
1383         element = connman_element_create("root");
1384
1385         element->path = g_strdup("/");
1386         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1387
1388         element_root = g_node_new(element);
1389
1390         __connman_notifier_init();
1391         __connman_service_init();
1392         __connman_network_init();
1393         __connman_device_init();
1394
1395         return 0;
1396 }
1397
1398 static gboolean probe_node(GNode *node, gpointer data)
1399 {
1400         struct connman_element *element = node->data;
1401
1402         DBG("element %p name %s", element, element->name);
1403
1404         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1405                 return FALSE;
1406
1407         if (element->driver)
1408                 return FALSE;
1409
1410         probe_element(element);
1411
1412         return FALSE;
1413 }
1414
1415 void __connman_element_start(void)
1416 {
1417         DBG("");
1418
1419         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1420                                                         probe_node, NULL);
1421
1422         started = TRUE;
1423
1424         __connman_storage_init_device();
1425
1426         __connman_connection_init();
1427         __connman_ipv4_init();
1428         __connman_rfkill_init();
1429 }
1430
1431 void __connman_element_stop(void)
1432 {
1433         DBG("");
1434
1435         __connman_rfkill_cleanup();
1436         __connman_ipv4_cleanup();
1437         __connman_connection_cleanup();
1438 }
1439
1440 static gboolean free_driver(GNode *node, gpointer data)
1441 {
1442         struct connman_element *element = node->data;
1443
1444         DBG("element %p name %s", element, element->name);
1445
1446         if (element->driver) {
1447                 if (element->driver->remove)
1448                         element->driver->remove(element);
1449
1450                 __connman_element_lock(element);
1451                 element->driver = NULL;
1452                 __connman_element_unlock(element);
1453         }
1454
1455         return FALSE;
1456 }
1457
1458 static gboolean free_node(GNode *node, gpointer data)
1459 {
1460         struct connman_element *element = node->data;
1461
1462         DBG("element %p name %s", element, element->name);
1463
1464         if (g_node_depth(node) > 1)
1465                 connman_element_unregister(element);
1466
1467         return FALSE;
1468 }
1469
1470 void __connman_element_cleanup(void)
1471 {
1472         DBG("");
1473
1474         __connman_device_cleanup();
1475         __connman_network_cleanup();
1476         __connman_service_cleanup();
1477         __connman_notifier_cleanup();
1478
1479         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1480                                                         free_driver, NULL);
1481
1482         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1483                                                         free_node, NULL);
1484
1485         g_node_destroy(element_root);
1486         element_root = NULL;
1487
1488         g_free(device_filter);
1489
1490         dbus_connection_unref(connection);
1491 }