src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 static gchar *nodevice_filter = NULL;
  41
  42 static gboolean started = FALSE;
  43
  44 static const char *type2string(enum connman_element_type type)
  45 {
  46         switch (type) {
  47         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  48                 return "unknown";
  49         case CONNMAN_ELEMENT_TYPE_ROOT:
  50                 return "root";
  51         case CONNMAN_ELEMENT_TYPE_PROFILE:
  52                 return "profile";
  53         case CONNMAN_ELEMENT_TYPE_DEVICE:
  54                 return "device";
  55         case CONNMAN_ELEMENT_TYPE_NETWORK:
  56                 return "network";
  57         case CONNMAN_ELEMENT_TYPE_SERVICE:
  58                 return "service";
  59         case CONNMAN_ELEMENT_TYPE_IPV4:
  60                 return "ipv4";
  61         case CONNMAN_ELEMENT_TYPE_IPV6:
  62                 return "ipv6";
  63         case CONNMAN_ELEMENT_TYPE_DHCP:
  64                 return "dhcp";
  65         case CONNMAN_ELEMENT_TYPE_BOOTP:
  66                 return "bootp";
  67         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  68                 return "zeroconf";
  69         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  70                 return "connection";
  71         case CONNMAN_ELEMENT_TYPE_VENDOR:
  72                 return "vendor";
  73         }
  74
  75         return NULL;
  76 }
  77
  78 struct foreach_data {
  79         enum connman_element_type type;
  80         element_cb_t callback;
  81         gpointer user_data;
  82 };
  83
  84 static gboolean foreach_callback(GNode *node, gpointer user_data)
  85 {
  86         struct connman_element *element = node->data;
  87         struct foreach_data *data = user_data;
  88
  89         DBG("element %p name %s", element, element->name);
  90
  91         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
  92                 return FALSE;
  93
  94         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
  95                                         data->type != element->type)
  96                 return FALSE;
  97
  98         if (data->callback)
  99                 data->callback(element, data->user_data);
 100
 101         return FALSE;
 102 }
 103
 104 void __connman_element_foreach(struct connman_element *element,
 105                                 enum connman_element_type type,
 106                                 element_cb_t callback, gpointer user_data)
 107 {
 108         struct foreach_data data = { type, callback, user_data };
 109         GNode *node;
 110
 111         DBG("");
 112
 113         if (element != NULL) {
 114                 node = g_node_find(element_root, G_PRE_ORDER,
 115                                                 G_TRAVERSE_ALL, element);
 116                 if (node == NULL)
 117                         return;
 118         } else
 119                 node = element_root;
 120
 121         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 122                                                 foreach_callback, &data);
 123 }
 124
 125 struct append_filter {
 126         enum connman_element_type type;
 127         DBusMessageIter *iter;
 128 };
 129
 130 static gboolean append_path(GNode *node, gpointer user_data)
 131 {
 132         struct connman_element *element = node->data;
 133         struct append_filter *filter = user_data;
 134
 135         DBG("element %p name %s", element, element->name);
 136
 137         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 138                 return FALSE;
 139
 140         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 141                                         filter->type != element->type)
 142                 return FALSE;
 143
 144         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 145                         __connman_device_has_driver(element->device) == FALSE)
 146                 return FALSE;
 147
 148         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 149                         __connman_network_has_driver(element->network) == FALSE)
 150                 return FALSE;
 151
 152         dbus_message_iter_append_basic(filter->iter,
 153                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 154
 155         return FALSE;
 156 }
 157
 158 void __connman_element_list(struct connman_element *element,
 159                                         enum connman_element_type type,
 160                                                         DBusMessageIter *iter)
 161 {
 162         struct append_filter filter = { type, iter };
 163         GNode *node;
 164
 165         DBG("");
 166
 167         if (element != NULL) {
 168                 node = g_node_find(element_root, G_PRE_ORDER,
 169                                                 G_TRAVERSE_ALL, element);
 170                 if (node == NULL)
 171                         return;
 172         } else
 173                 node = element_root;
 174
 175         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 176                                                 append_path, &filter);
 177 }
 178
 179 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 180 {
 181         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 182                                                 element->network != NULL)
 183                 return element->network;
 184
 185         if (element->parent == NULL)
 186                 return NULL;
 187
 188         return __connman_element_get_network(element->parent);
 189 }
 190
 191 struct connman_service *__connman_element_get_service(struct connman_element *element)
 192 {
 193         struct connman_service *service = NULL;
 194         struct connman_network *network;
 195         struct connman_device *device;
 196         enum connman_device_type type;
 197
 198         device = __connman_element_get_device(element);
 199         if (device == NULL)
 200                 return NULL;
 201
 202         type = connman_device_get_type(device);
 203
 204         switch (type) {
 205         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 206         case CONNMAN_DEVICE_TYPE_VENDOR:
 207         case CONNMAN_DEVICE_TYPE_GPS:
 208                 break;
 209         case CONNMAN_DEVICE_TYPE_ETHERNET:
 210         case CONNMAN_DEVICE_TYPE_WIFI:
 211         case CONNMAN_DEVICE_TYPE_WIMAX:
 212         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 213         case CONNMAN_DEVICE_TYPE_CELLULAR:
 214         case CONNMAN_DEVICE_TYPE_MBM:
 215         case CONNMAN_DEVICE_TYPE_HSO:
 216                 network = __connman_element_get_network(element);
 217                 if (network == NULL)
 218                         return NULL;
 219                 service = __connman_service_lookup_from_network(network);
 220                 break;
 221         }
 222
 223         return service;
 224 }
 225
 226 struct connman_device *__connman_element_get_device(struct connman_element *element)
 227 {
 228         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 229                                                 element->device != NULL)
 230                 return element->device;
 231
 232         if (element->parent == NULL)
 233                 return NULL;
 234
 235         return __connman_element_get_device(element->parent);
 236 }
 237
 238 const char *__connman_element_get_device_path(struct connman_element *element)
 239 {
 240         struct connman_device *device;
 241
 242         device = __connman_element_get_device(element);
 243         if (device == NULL)
 244                 return NULL;
 245
 246         return connman_device_get_path(device);
 247 }
 248
 249 const char *__connman_element_get_network_path(struct connman_element *element)
 250 {
 251         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 252                                                 element->network != NULL)
 253                 return element->path;
 254
 255         if (element->parent == NULL)
 256                 return NULL;
 257
 258         return __connman_element_get_network_path(element->parent);
 259 }
 260
 261 struct find_data {
 262         enum connman_service_type type;
 263         struct connman_device *device;
 264 };
 265
 266 static gboolean find_device(GNode *node, gpointer user_data)
 267 {
 268         struct connman_element *element = node->data;
 269         struct find_data *data = user_data;
 270
 271         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 272                 return FALSE;
 273
 274         if (element->device == NULL)
 275                 return FALSE;
 276
 277         if (data->type != connman_device_get_type(element->device))
 278                 return FALSE;
 279
 280         data->device = element->device;
 281
 282         return TRUE;
 283 }
 284
 285 struct connman_device *__connman_element_find_device(enum connman_service_type type)
 286 {
 287         struct find_data data = { .type = type, .device = NULL };
 288
 289         g_node_traverse(element_root, G_PRE_ORDER,
 290                                 G_TRAVERSE_ALL, -1, find_device, &data);
 291
 292         return data.device;
 293 }
 294
 295 static gboolean request_scan(GNode *node, gpointer user_data)
 296 {
 297         struct connman_element *element = node->data;
 298         struct find_data *data = user_data;
 299         enum connman_service_type type;
 300
 301         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 302                 return FALSE;
 303
 304         if (element->device == NULL)
 305                 return FALSE;
 306
 307         type = __connman_device_get_service_type(element->device);
 308
 309         switch (type) {
 310         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 311         case CONNMAN_SERVICE_TYPE_SYSTEM:
 312         case CONNMAN_SERVICE_TYPE_ETHERNET:
 313         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 314         case CONNMAN_SERVICE_TYPE_CELLULAR:
 315         case CONNMAN_SERVICE_TYPE_GPS:
 316         case CONNMAN_SERVICE_TYPE_VPN:
 317                 return FALSE;
 318         case CONNMAN_SERVICE_TYPE_WIFI:
 319         case CONNMAN_SERVICE_TYPE_WIMAX:
 320                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 321                                                         data->type != type)
 322                         return FALSE;
 323                 break;
 324         }
 325
 326         __connman_device_scan(element->device);
 327
 328         return FALSE;
 329 }
 330
 331 int __connman_element_request_scan(enum connman_service_type type)
 332 {
 333         struct find_data data = { .type = type, .device = NULL };
 334
 335         g_node_traverse(element_root, G_PRE_ORDER,
 336                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 337
 338         return 0;
 339 }
 340
 341 static gboolean enable_technology(GNode *node, gpointer user_data)
 342 {
 343         struct connman_element *element = node->data;
 344         struct find_data *data = user_data;
 345         enum connman_service_type type;
 346
 347         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 348                 return FALSE;
 349
 350         if (element->device == NULL)
 351                 return FALSE;
 352
 353         type = __connman_device_get_service_type(element->device);
 354
 355         switch (type) {
 356         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 357         case CONNMAN_SERVICE_TYPE_SYSTEM:
 358         case CONNMAN_SERVICE_TYPE_GPS:
 359         case CONNMAN_SERVICE_TYPE_VPN:
 360                 return FALSE;
 361         case CONNMAN_SERVICE_TYPE_ETHERNET:
 362         case CONNMAN_SERVICE_TYPE_WIFI:
 363         case CONNMAN_SERVICE_TYPE_WIMAX:
 364         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 365         case CONNMAN_SERVICE_TYPE_CELLULAR:
 366                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 367                                                         data->type != type)
 368                         return FALSE;
 369                 break;
 370         }
 371
 372         __connman_device_enable_persistent(element->device);
 373
 374         return FALSE;
 375 }
 376
 377 int __connman_element_enable_technology(enum connman_service_type type)
 378 {
 379         struct find_data data = { .type = type, .device = NULL };
 380
 381         g_node_traverse(element_root, G_PRE_ORDER,
 382                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 383
 384         return 0;
 385 }
 386
 387 static gboolean disable_technology(GNode *node, gpointer user_data)
 388 {
 389         struct connman_element *element = node->data;
 390         struct find_data *data = user_data;
 391         enum connman_service_type type;
 392
 393         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 394                 return FALSE;
 395
 396         if (element->device == NULL)
 397                 return FALSE;
 398
 399         type = __connman_device_get_service_type(element->device);
 400
 401         switch (type) {
 402         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 403         case CONNMAN_SERVICE_TYPE_SYSTEM:
 404         case CONNMAN_SERVICE_TYPE_GPS:
 405         case CONNMAN_SERVICE_TYPE_VPN:
 406                 return FALSE;
 407         case CONNMAN_SERVICE_TYPE_ETHERNET:
 408         case CONNMAN_SERVICE_TYPE_WIFI:
 409         case CONNMAN_SERVICE_TYPE_WIMAX:
 410         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 411         case CONNMAN_SERVICE_TYPE_CELLULAR:
 412                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 413                                                         data->type != type)
 414                         return FALSE;
 415                 break;
 416         }
 417
 418         __connman_device_disable_persistent(element->device);
 419
 420         return FALSE;
 421 }
 422
 423 int __connman_element_disable_technology(enum connman_service_type type)
 424 {
 425         struct find_data data = { .type = type, .device = NULL };
 426
 427         g_node_traverse(element_root, G_PRE_ORDER,
 428                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 429
 430         return 0;
 431 }
 432
 433 static gint compare_priority(gconstpointer a, gconstpointer b)
 434 {
 435         const struct connman_driver *driver1 = a;
 436         const struct connman_driver *driver2 = b;
 437
 438         return driver2->priority - driver1->priority;
 439 }
 440
 441 static gboolean match_driver(struct connman_element *element,
 442                                         struct connman_driver *driver)
 443 {
 444         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 445                 return FALSE;
 446
 447         if (element->type == driver->type ||
 448                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 449                 return TRUE;
 450
 451         return FALSE;
 452 }
 453
 454 static gboolean probe_driver(GNode *node, gpointer data)
 455 {
 456         struct connman_element *element = node->data;
 457         struct connman_driver *driver = data;
 458
 459         DBG("element %p name %s", element, element->name);
 460
 461         if (!element->driver && match_driver(element, driver) == TRUE) {
 462                 if (driver->probe(element) < 0)
 463                         return FALSE;
 464
 465                 element->driver = driver;
 466         }
 467
 468         return FALSE;
 469 }
 470
 471 void __connman_driver_rescan(struct connman_driver *driver)
 472 {
 473         DBG("driver %p name %s", driver, driver->name);
 474
 475         if (!driver->probe)
 476                 return;
 477
 478         if (element_root != NULL)
 479                 g_node_traverse(element_root, G_PRE_ORDER,
 480                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 481 }
 482
 483 /**
 484  * connman_driver_register:
 485  * @driver: driver definition
 486  *
 487  * Register a new driver
 488  *
 489  * Returns: %0 on success
 490  */
 491 int connman_driver_register(struct connman_driver *driver)
 492 {
 493         DBG("driver %p name %s", driver, driver->name);
 494
 495         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 496                 return -EINVAL;
 497
 498         if (!driver->probe)
 499                 return -EINVAL;
 500
 501         driver_list = g_slist_insert_sorted(driver_list, driver,
 502                                                         compare_priority);
 503
 504         if (started == FALSE)
 505                 return 0;
 506
 507         if (element_root != NULL)
 508                 g_node_traverse(element_root, G_PRE_ORDER,
 509                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 510
 511         return 0;
 512 }
 513
 514 static gboolean remove_driver(GNode *node, gpointer data)
 515 {
 516         struct connman_element *element = node->data;
 517         struct connman_driver *driver = data;
 518
 519         DBG("element %p name %s", element, element->name);
 520
 521         if (element->driver == driver) {
 522                 if (driver->remove)
 523                         driver->remove(element);
 524
 525                 element->driver = NULL;
 526         }
 527
 528         return FALSE;
 529 }
 530
 531 /**
 532  * connman_driver_unregister:
 533  * @driver: driver definition
 534  *
 535  * Remove a previously registered driver
 536  */
 537 void connman_driver_unregister(struct connman_driver *driver)
 538 {
 539         DBG("driver %p name %s", driver, driver->name);
 540
 541         driver_list = g_slist_remove(driver_list, driver);
 542
 543         if (element_root != NULL)
 544                 g_node_traverse(element_root, G_POST_ORDER,
 545                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 546 }
 547
 548 static void unregister_property(gpointer data)
 549 {
 550         struct connman_property *property = data;
 551
 552         DBG("property %p", property);
 553
 554         g_free(property->value);
 555         g_free(property);
 556 }
 557
 558 static void unregister_child(gpointer data)
 559 {
 560         struct connman_element *element = data;
 561
 562         DBG("element %p", element);
 563
 564         connman_element_unref(element);
 565 }
 566
 567 void __connman_element_initialize(struct connman_element *element)
 568 {
 569         DBG("element %p", element);
 570
 571         element->refcount = 1;
 572
 573         element->name    = NULL;
 574         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 575         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 576         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 577         element->index   = -1;
 578         element->enabled = FALSE;
 579
 580         element->children = g_hash_table_new_full(g_str_hash, g_str_equal,
 581                                                 NULL, unregister_child);
 582
 583         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 584                                                 g_free, unregister_property);
 585 }
 586
 587 /**
 588  * connman_element_create:
 589  * @name: element name
 590  *
 591  * Allocate a new element and assign the given #name to it. If the name
 592  * is #NULL, it will be later on created based on the element type.
 593  *
 594  * Returns: a newly-allocated #connman_element structure
 595  */
 596 struct connman_element *connman_element_create(const char *name)
 597 {
 598         struct connman_element *element;
 599
 600         element = g_try_new0(struct connman_element, 1);
 601         if (element == NULL)
 602                 return NULL;
 603
 604         DBG("element %p", element);
 605
 606         __connman_element_initialize(element);
 607
 608         return element;
 609 }
 610
 611 struct connman_element *connman_element_ref(struct connman_element *element)
 612 {
 613         DBG("element %p name %s refcount %d", element, element->name,
 614                                 g_atomic_int_get(&element->refcount) + 1);
 615
 616         g_atomic_int_inc(&element->refcount);
 617
 618         return element;
 619 }
 620
 621 static void free_properties(struct connman_element *element)
 622 {
 623         DBG("element %p name %s", element, element->name);
 624
 625         g_hash_table_destroy(element->properties);
 626         element->properties = NULL;
 627 }
 628
 629 static void free_children(struct connman_element *element)
 630 {
 631         DBG("element %p name %s", element, element->name);
 632
 633         g_hash_table_destroy(element->children);
 634         element->children = NULL;
 635 }
 636
 637 void connman_element_unref(struct connman_element *element)
 638 {
 639         DBG("element %p name %s refcount %d", element, element->name,
 640                                 g_atomic_int_get(&element->refcount) - 1);
 641
 642         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 643                 if (element->destruct)
 644                         element->destruct(element);
 645                 free_children(element);
 646                 free_properties(element);
 647                 g_free(element->ipv4.address);
 648                 g_free(element->ipv4.netmask);
 649                 g_free(element->ipv4.gateway);
 650                 g_free(element->ipv4.network);
 651                 g_free(element->ipv4.broadcast);
 652                 g_free(element->ipv4.nameserver);
 653                 g_free(element->ipv4.timeserver);
 654                 g_free(element->ipv4.pac);
 655                 g_free(element->devname);
 656                 g_free(element->path);
 657                 g_free(element->name);
 658                 g_free(element);
 659         }
 660 }
 661
 662 static int set_static_property(struct connman_element *element,
 663                                 const char *name, int type, const void *value)
 664 {
 665         struct connman_property *property;
 666
 667         DBG("element %p name %s", element, element->name);
 668
 669         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 670                 return -EINVAL;
 671
 672         property = g_try_new0(struct connman_property, 1);
 673         if (property == NULL)
 674                 return -ENOMEM;
 675
 676         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 677         property->type = type;
 678
 679         DBG("name %s type %d value %p", name, type, value);
 680
 681         switch (type) {
 682         case DBUS_TYPE_STRING:
 683                 property->value = g_strdup(*((const char **) value));
 684                 break;
 685         case DBUS_TYPE_BOOLEAN:
 686         case DBUS_TYPE_BYTE:
 687                 property->value = g_try_malloc(1);
 688                 if (property->value != NULL)
 689                         memcpy(property->value, value, 1);
 690                 break;
 691         }
 692
 693         g_hash_table_replace(element->properties, g_strdup(name), property);
 694
 695         return 0;
 696 }
 697
 698 static int set_static_array_property(struct connman_element *element,
 699                         const char *name, int type, const void *value, int len)
 700 {
 701         struct connman_property *property;
 702
 703         DBG("element %p name %s", element, element->name);
 704
 705         if (type != DBUS_TYPE_BYTE)
 706                 return -EINVAL;
 707
 708         property = g_try_new0(struct connman_property, 1);
 709         if (property == NULL)
 710                 return -ENOMEM;
 711
 712         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 713         property->type    = DBUS_TYPE_ARRAY;
 714         property->subtype = type;
 715
 716         DBG("name %s type %d value %p", name, type, value);
 717
 718         switch (type) {
 719         case DBUS_TYPE_BYTE:
 720                 property->value = g_try_malloc(len);
 721                 if (property->value != NULL) {
 722                         memcpy(property->value,
 723                                 *((const unsigned char **) value), len);
 724                         property->size = len;
 725                 }
 726                 break;
 727         }
 728
 729         g_hash_table_replace(element->properties, g_strdup(name), property);
 730
 731         return 0;
 732 }
 733
 734 int connman_element_get_value(struct connman_element *element,
 735                                 enum connman_property_id id, void *value)
 736 {
 737         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 738                 return -EINVAL;
 739
 740         switch (id) {
 741         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 742                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 743                         return connman_element_get_value(element->parent,
 744                                                                 id, value);
 745                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 746                 break;
 747         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 748                 if (element->ipv4.address == NULL)
 749                         return connman_element_get_value(element->parent,
 750                                                                 id, value);
 751                 *((char **) value) = element->ipv4.address;
 752                 break;
 753         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 754                 if (element->ipv4.netmask == NULL)
 755                         return connman_element_get_value(element->parent,
 756                                                                 id, value);
 757                 *((char **) value) = element->ipv4.netmask;
 758                 break;
 759         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 760                 if (element->ipv4.gateway == NULL)
 761                         return connman_element_get_value(element->parent,
 762                                                                 id, value);
 763                 *((char **) value) = element->ipv4.gateway;
 764                 break;
 765         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 766                 if (element->ipv4.broadcast == NULL)
 767                         return connman_element_get_value(element->parent,
 768                                                                 id, value);
 769                 *((char **) value) = element->ipv4.broadcast;
 770                 break;
 771         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 772                 if (element->ipv4.nameserver == NULL)
 773                         return connman_element_get_value(element->parent,
 774                                                                 id, value);
 775                 *((char **) value) = element->ipv4.nameserver;
 776                 break;
 777         case CONNMAN_PROPERTY_ID_IPV4_TIMESERVER:
 778                 if (element->ipv4.timeserver == NULL)
 779                         return connman_element_get_value(element->parent,
 780                                                                 id, value);
 781                 *((char **) value) = element->ipv4.timeserver;
 782                 break;
 783         case CONNMAN_PROPERTY_ID_IPV4_PAC:
 784                 if (element->ipv4.pac == NULL)
 785                         return connman_element_get_value(element->parent,
 786                                                                 id, value);
 787                 *((char **) value) = element->ipv4.pac;
 788                 break;
 789         default:
 790                 return -EINVAL;
 791         }
 792
 793         return 0;
 794 }
 795
 796 static gboolean get_static_property(struct connman_element *element,
 797                                                 const char *name, void *value)
 798 {
 799         struct connman_property *property;
 800         gboolean found = FALSE;
 801
 802         DBG("element %p name %s", element, element->name);
 803
 804         property = g_hash_table_lookup(element->properties, name);
 805         if (property != NULL) {
 806                 switch (property->type) {
 807                 case DBUS_TYPE_STRING:
 808                         *((char **) value) = property->value;
 809                         found = TRUE;
 810                         break;
 811                 case DBUS_TYPE_BOOLEAN:
 812                 case DBUS_TYPE_BYTE:
 813                         memcpy(value, property->value, 1);
 814                         found = TRUE;
 815                         break;
 816                 }
 817         }
 818
 819         if (found == FALSE && element->parent != NULL)
 820                 return get_static_property(element->parent, name, value);
 821
 822         return found;
 823 }
 824
 825 static gboolean get_static_array_property(struct connman_element *element,
 826                         const char *name, void *value, unsigned int *len)
 827 {
 828         struct connman_property *property;
 829         gboolean found = FALSE;
 830
 831         DBG("element %p name %s", element, element->name);
 832
 833         property = g_hash_table_lookup(element->properties, name);
 834         if (property != NULL) {
 835                 *((void **) value) = property->value;
 836                 *len = property->size;
 837                 found = TRUE;
 838         }
 839
 840         return found;
 841 }
 842
 843 /**
 844  * connman_element_set_string:
 845  * @element: element structure
 846  * @key: unique identifier
 847  * @value: string value
 848  *
 849  * Set string value for specific key
 850  */
 851 int connman_element_set_string(struct connman_element *element,
 852                                         const char *key, const char *value)
 853 {
 854         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 855 }
 856
 857 /**
 858  * connman_element_get_string:
 859  * @element: element structure
 860  * @key: unique identifier
 861  *
 862  * Get string value for specific key
 863  */
 864 const char *connman_element_get_string(struct connman_element *element,
 865                                                         const char *key)
 866 {
 867         const char *value;
 868
 869         if (get_static_property(element, key, &value) == FALSE)
 870                 return NULL;
 871
 872         return value;
 873 }
 874
 875 /**
 876  * connman_element_set_bool:
 877  * @element: element structure
 878  * @key: unique identifier
 879  * @value: boolean value
 880  *
 881  * Set boolean value for specific key
 882  */
 883 int connman_element_set_bool(struct connman_element *element,
 884                                         const char *key, connman_bool_t value)
 885 {
 886         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
 887 }
 888
 889 /**
 890  * connman_element_get_bool:
 891  * @element: element structure
 892  * @key: unique identifier
 893  *
 894  * Get boolean value for specific key
 895  */
 896 connman_bool_t connman_element_get_bool(struct connman_element *element,
 897                                                         const char *key)
 898 {
 899         connman_bool_t value;
 900
 901         if (get_static_property(element, key, &value) == FALSE)
 902                 return FALSE;
 903
 904         return value;
 905 }
 906
 907 /**
 908  * connman_element_set_uint8:
 909  * @element: element structure
 910  * @key: unique identifier
 911  * @value: integer value
 912  *
 913  * Set integer value for specific key
 914  */
 915 int connman_element_set_uint8(struct connman_element *element,
 916                                         const char *key, connman_uint8_t value)
 917 {
 918         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 919 }
 920
 921 /**
 922  * connman_element_get_uint8:
 923  * @element: element structure
 924  * @key: unique identifier
 925  *
 926  * Get integer value for specific key
 927  */
 928 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 929                                                         const char *key)
 930 {
 931         connman_uint8_t value;
 932
 933         if (get_static_property(element, key, &value) == FALSE)
 934                 return 0;
 935
 936         return value;
 937 }
 938
 939 /**
 940  * connman_element_set_blob:
 941  * @element: element structure
 942  * @key: unique identifier
 943  * @data: blob data
 944  * @size: blob size
 945  *
 946  * Set binary blob value for specific key
 947  */
 948 int connman_element_set_blob(struct connman_element *element,
 949                         const char *key, const void *data, unsigned int size)
 950 {
 951         return set_static_array_property(element, key,
 952                                                 DBUS_TYPE_BYTE, &data, size);
 953 }
 954
 955 /**
 956  * connman_element_get_blob:
 957  * @element: element structure
 958  * @key: unique identifier
 959  * @size: pointer to blob size
 960  *
 961  * Get binary blob value for specific key
 962  */
 963 const void *connman_element_get_blob(struct connman_element *element,
 964                                         const char *key, unsigned int *size)
 965 {
 966         void *value;
 967
 968         if (get_static_array_property(element, key, &value, size) == FALSE)
 969                 return NULL;
 970
 971         return value;
 972 }
 973
 974 static void probe_element(struct connman_element *element)
 975 {
 976         GSList *list;
 977
 978         DBG("element %p name %s", element, element->name);
 979
 980         for (list = driver_list; list; list = list->next) {
 981                 struct connman_driver *driver = list->data;
 982
 983                 if (match_driver(element, driver) == FALSE)
 984                         continue;
 985
 986                 DBG("driver %p name %s", driver, driver->name);
 987
 988                 if (driver->probe(element) == 0) {
 989                         element->driver = driver;
 990                         break;
 991                 }
 992         }
 993 }
 994
 995 static void register_element(gpointer data, gpointer user_data)
 996 {
 997         struct connman_element *element = data;
 998         const gchar *basepath;
 999         GNode *node;
1000
1001         if (element->parent) {
1002                 node = g_node_find(element_root, G_PRE_ORDER,
1003                                         G_TRAVERSE_ALL, element->parent);
1004                 basepath = element->parent->path;
1005         } else {
1006                 element->parent = element_root->data;
1007
1008                 node = element_root;
1009                 basepath = CONNMAN_PATH "/device";
1010         }
1011
1012         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1013
1014         if (node == NULL) {
1015                 connman_error("Element registration for %s failed",
1016                                                         element->path);
1017                 return;
1018         }
1019
1020         DBG("element %p path %s", element, element->path);
1021
1022         g_node_append_data(node, element);
1023
1024         if (started == FALSE)
1025                 return;
1026
1027         probe_element(element);
1028 }
1029
1030 gboolean __connman_element_device_isfiltered(const char *devname)
1031 {
1032         if (device_filter == NULL)
1033                 goto nodevice;
1034
1035         if (g_pattern_match_simple(device_filter, devname) == FALSE) {
1036                 DBG("ignoring device %s (match)", devname);
1037                 return TRUE;
1038         }
1039
1040 nodevice:
1041         if (nodevice_filter == NULL)
1042                 return FALSE;
1043
1044         if (g_pattern_match_simple(nodevice_filter, devname) == TRUE) {
1045                 DBG("ignoring device %s (no match)", devname);
1046                 return TRUE;
1047         }
1048
1049         return FALSE;
1050 }
1051
1052 /**
1053  * connman_element_register:
1054  * @element: the element to register
1055  * @parent: the parent to register the element with
1056  *
1057  * Register an element with the core. It will be register under the given
1058  * parent of if %NULL is provided under the root element.
1059  *
1060  * Returns: %0 on success
1061  */
1062 int connman_element_register(struct connman_element *element,
1063                                         struct connman_element *parent)
1064 {
1065         DBG("element %p name %s parent %p", element, element->name, parent);
1066
1067         if (element->devname == NULL)
1068                 element->devname = g_strdup(element->name);
1069
1070         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1071                 goto setup;
1072
1073         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1074                 return -EPERM;
1075
1076 setup:
1077         if (connman_element_ref(element) == NULL)
1078                 return -EINVAL;
1079
1080         if (element->name == NULL) {
1081                 element->name = g_strdup(type2string(element->type));
1082                 if (element->name == NULL) {
1083                         return -EINVAL;
1084                 }
1085         }
1086
1087         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1088                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1089
1090         element->parent = parent;
1091
1092         register_element(element, NULL);
1093
1094         return 0;
1095 }
1096
1097 static gboolean remove_element(GNode *node, gpointer user_data)
1098 {
1099         struct connman_element *element = node->data;
1100         struct connman_element *root = user_data;
1101
1102         DBG("element %p name %s", element, element->name);
1103
1104         if (element == root)
1105                 return FALSE;
1106
1107         if (node != NULL)
1108                 g_node_unlink(node);
1109
1110         if (element->driver) {
1111                 if (element->driver->remove)
1112                         element->driver->remove(element);
1113
1114                 element->driver = NULL;
1115         }
1116
1117         if (node != NULL)
1118                 g_node_destroy(node);
1119
1120         connman_element_unref(element);
1121
1122         return FALSE;
1123 }
1124
1125 void connman_element_unregister(struct connman_element *element)
1126 {
1127         GNode *node;
1128
1129         DBG("element %p name %s", element, element->name);
1130
1131         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1132
1133         if (node != NULL)
1134                 g_node_traverse(node, G_POST_ORDER,
1135                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1136 }
1137
1138 void connman_element_unregister_children(struct connman_element *element)
1139 {
1140         GNode *node;
1141
1142         DBG("element %p name %s", element, element->name);
1143
1144         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1145
1146         if (node != NULL)
1147                 g_node_traverse(node, G_POST_ORDER,
1148                                 G_TRAVERSE_ALL, -1, remove_element, element);
1149 }
1150
1151 static gboolean update_element(GNode *node, gpointer user_data)
1152 {
1153         struct connman_element *element = node->data;
1154
1155         DBG("element %p name %s", element, element->name);
1156
1157         if (element->driver && element->driver->update)
1158                 element->driver->update(element);
1159
1160         return FALSE;
1161 }
1162
1163 void connman_element_update(struct connman_element *element)
1164 {
1165         GNode *node;
1166
1167         DBG("element %p name %s", element, element->name);
1168
1169         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1170
1171         if (node != NULL)
1172                 g_node_traverse(node, G_PRE_ORDER,
1173                                 G_TRAVERSE_ALL, -1, update_element, element);
1174 }
1175
1176 int connman_element_set_enabled(struct connman_element *element,
1177                                                         gboolean enabled)
1178 {
1179         if (element->enabled == enabled)
1180                 return 0;
1181
1182         element->enabled = enabled;
1183
1184         connman_element_update(element);
1185
1186         return 0;
1187 }
1188
1189 static enum connman_service_error convert_error(enum connman_element_error error)
1190 {
1191         switch (error) {
1192         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1193         case CONNMAN_ELEMENT_ERROR_FAILED:
1194                 break;
1195         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1196                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1197         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1198                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1199         }
1200
1201         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1202 }
1203
1204 /**
1205  * connman_element_set_error:
1206  * @element: element structure
1207  * @error: error identifier
1208  *
1209  * Set error state and specific error identifier
1210  */
1211 void connman_element_set_error(struct connman_element *element,
1212                                         enum connman_element_error error)
1213 {
1214         struct connman_service *service;
1215
1216         DBG("element %p error %d", element, error);
1217
1218         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1219                 return;
1220
1221         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1222         element->error = error;
1223
1224         if (element->driver && element->driver->change)
1225                 element->driver->change(element);
1226
1227         service = __connman_element_get_service(element);
1228         __connman_service_indicate_error(service, convert_error(error));
1229 }
1230
1231 int __connman_element_init(const char *device, const char *nodevice)
1232 {
1233         struct connman_element *element;
1234
1235         DBG("");
1236
1237         connection = connman_dbus_get_connection();
1238         if (connection == NULL)
1239                 return -EIO;
1240
1241         device_filter = g_strdup(device);
1242         nodevice_filter = g_strdup(nodevice);
1243
1244         element = connman_element_create("root");
1245
1246         element->path = g_strdup("/");
1247         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1248
1249         element_root = g_node_new(element);
1250
1251         __connman_technology_init();
1252         __connman_notifier_init();
1253         __connman_service_init();
1254         __connman_provider_init();
1255         __connman_network_init();
1256         __connman_device_init();
1257
1258         return 0;
1259 }
1260
1261 static gboolean probe_node(GNode *node, gpointer data)
1262 {
1263         struct connman_element *element = node->data;
1264
1265         DBG("element %p name %s", element, element->name);
1266
1267         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1268                 return FALSE;
1269
1270         if (element->driver)
1271                 return FALSE;
1272
1273         probe_element(element);
1274
1275         return FALSE;
1276 }
1277
1278 void __connman_element_start(void)
1279 {
1280         DBG("");
1281
1282         __connman_storage_init_profile();
1283
1284         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1285                                                         probe_node, NULL);
1286
1287         started = TRUE;
1288
1289         __connman_rtnl_start();
1290         __connman_udev_start();
1291
1292         __connman_connection_init();
1293         __connman_ipv4_init();
1294         __connman_dhcp_init();
1295
1296         if (__connman_rfkill_init() < 0)
1297                 __connman_udev_enable_rfkill_processing();
1298 }
1299
1300 void __connman_element_stop(void)
1301 {
1302         DBG("");
1303
1304         __connman_rfkill_cleanup();
1305
1306         __connman_dhcp_cleanup();
1307         __connman_ipv4_cleanup();
1308         __connman_provider_cleanup();
1309         __connman_connection_cleanup();
1310 }
1311
1312 static gboolean free_driver(GNode *node, gpointer data)
1313 {
1314         struct connman_element *element = node->data;
1315
1316         DBG("element %p name %s", element, element->name);
1317
1318         if (element->driver) {
1319                 if (element->driver->remove)
1320                         element->driver->remove(element);
1321
1322                 element->driver = NULL;
1323         }
1324
1325         return FALSE;
1326 }
1327
1328 static gboolean free_node(GNode *node, gpointer data)
1329 {
1330         struct connman_element *element = node->data;
1331
1332         DBG("element %p name %s", element, element->name);
1333
1334         if (g_node_depth(node) > 1)
1335                 connman_element_unregister(element);
1336
1337         return FALSE;
1338 }
1339
1340 void __connman_element_cleanup(void)
1341 {
1342         DBG("");
1343
1344         __connman_device_cleanup();
1345         __connman_network_cleanup();
1346         __connman_service_cleanup();
1347         __connman_notifier_cleanup();
1348         __connman_technology_cleanup();
1349
1350         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1351                                                         free_driver, NULL);
1352
1353         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1354                                                         free_node, NULL);
1355
1356         g_node_destroy(element_root);
1357         element_root = NULL;
1358
1359         g_free(nodevice_filter);
1360         g_free(device_filter);
1361
1362         if (connection == NULL)
1363                 return;
1364
1365         dbus_connection_unref(connection);
1366 }