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 *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 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                 network = get_network(element);
 215                 if (network == NULL)
 216                         return NULL;
 217                 service = __connman_service_lookup_from_network(network);
 218                 break;
 219         }
 220
 221         return service;
 222 }
 223
 224 struct connman_device *__connman_element_get_device(struct connman_element *element)
 225 {
 226         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 227                                                 element->device != NULL)
 228                 return element->device;
 229
 230         if (element->parent == NULL)
 231                 return NULL;
 232
 233         return __connman_element_get_device(element->parent);
 234 }
 235
 236 const char *__connman_element_get_device_path(struct connman_element *element)
 237 {
 238         struct connman_device *device;
 239
 240         device = __connman_element_get_device(element);
 241         if (device == NULL)
 242                 return NULL;
 243
 244         return connman_device_get_path(device);
 245 }
 246
 247 const char *__connman_element_get_network_path(struct connman_element *element)
 248 {
 249         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 250                                                 element->network != NULL)
 251                 return element->path;
 252
 253         if (element->parent == NULL)
 254                 return NULL;
 255
 256         return __connman_element_get_network_path(element->parent);
 257 }
 258
 259 struct find_data {
 260         enum connman_service_type type;
 261         struct connman_device *device;
 262         connman_bool_t error;
 263 };
 264
 265 static gboolean find_device(GNode *node, gpointer user_data)
 266 {
 267         struct connman_element *element = node->data;
 268         struct find_data *data = user_data;
 269
 270         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 271                 return FALSE;
 272
 273         if (element->device == NULL)
 274                 return FALSE;
 275
 276         if (data->type != connman_device_get_type(element->device))
 277                 return FALSE;
 278
 279         data->device = element->device;
 280
 281         return TRUE;
 282 }
 283
 284 struct connman_device *__connman_element_find_device(enum connman_service_type type)
 285 {
 286         struct find_data data = { .type = type, .device = NULL };
 287
 288         g_node_traverse(element_root, G_PRE_ORDER,
 289                                 G_TRAVERSE_ALL, -1, find_device, &data);
 290
 291         return data.device;
 292 }
 293
 294 static gboolean request_scan(GNode *node, gpointer user_data)
 295 {
 296         struct connman_element *element = node->data;
 297         struct find_data *data = user_data;
 298         enum connman_service_type type;
 299
 300         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 301                 return FALSE;
 302
 303         if (element->device == NULL)
 304                 return FALSE;
 305
 306         type = __connman_device_get_service_type(element->device);
 307
 308         switch (type) {
 309         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 310         case CONNMAN_SERVICE_TYPE_SYSTEM:
 311         case CONNMAN_SERVICE_TYPE_ETHERNET:
 312         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 313         case CONNMAN_SERVICE_TYPE_CELLULAR:
 314         case CONNMAN_SERVICE_TYPE_GPS:
 315         case CONNMAN_SERVICE_TYPE_VPN:
 316                 return FALSE;
 317         case CONNMAN_SERVICE_TYPE_WIFI:
 318         case CONNMAN_SERVICE_TYPE_WIMAX:
 319                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 320                                                         data->type != type)
 321                         return FALSE;
 322                 break;
 323         }
 324
 325         __connman_device_scan(element->device);
 326
 327         return FALSE;
 328 }
 329
 330 int __connman_element_request_scan(enum connman_service_type type)
 331 {
 332         struct find_data data = { .type = type, .device = NULL };
 333
 334         g_node_traverse(element_root, G_PRE_ORDER,
 335                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 336
 337         return 0;
 338 }
 339
 340 static gboolean enable_technology(GNode *node, gpointer user_data)
 341 {
 342         struct connman_element *element = node->data;
 343         struct find_data *data = user_data;
 344         enum connman_service_type type;
 345         int err;
 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         err = __connman_device_enable_persistent(element->device);
 373         if (err == 0 || (err < 0 && err == -EINPROGRESS))
 374                 data->error = FALSE;
 375
 376         return FALSE;
 377 }
 378
 379 int __connman_element_enable_technology(enum connman_service_type type)
 380 {
 381         struct find_data data = { .type = type, .device = NULL, .error = TRUE };
 382
 383         g_node_traverse(element_root, G_PRE_ORDER,
 384                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 385
 386         if (data.error == TRUE)
 387                 return -ENODEV;
 388
 389         return 0;
 390 }
 391
 392 static gboolean disable_technology(GNode *node, gpointer user_data)
 393 {
 394         struct connman_element *element = node->data;
 395         struct find_data *data = user_data;
 396         enum connman_service_type type;
 397         int err;
 398
 399         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 400                 return FALSE;
 401
 402         if (element->device == NULL)
 403                 return FALSE;
 404
 405         type = __connman_device_get_service_type(element->device);
 406
 407         switch (type) {
 408         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 409         case CONNMAN_SERVICE_TYPE_SYSTEM:
 410         case CONNMAN_SERVICE_TYPE_GPS:
 411         case CONNMAN_SERVICE_TYPE_VPN:
 412                 return FALSE;
 413         case CONNMAN_SERVICE_TYPE_ETHERNET:
 414         case CONNMAN_SERVICE_TYPE_WIFI:
 415         case CONNMAN_SERVICE_TYPE_WIMAX:
 416         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 417         case CONNMAN_SERVICE_TYPE_CELLULAR:
 418                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 419                                                         data->type != type)
 420                         return FALSE;
 421                 break;
 422         }
 423
 424         err = __connman_device_disable_persistent(element->device);
 425         if (err == 0 || (err < 0 && err == -EINPROGRESS))
 426                 data->error = FALSE;
 427
 428         return FALSE;
 429 }
 430
 431 int __connman_element_disable_technology(enum connman_service_type type)
 432 {
 433         struct find_data data = { .type = type, .device = NULL, .error = TRUE };
 434
 435         g_node_traverse(element_root, G_PRE_ORDER,
 436                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 437
 438         if (data.error == TRUE)
 439                 return -ENODEV;
 440
 441         return 0;
 442 }
 443
 444 static gint compare_priority(gconstpointer a, gconstpointer b)
 445 {
 446         const struct connman_driver *driver1 = a;
 447         const struct connman_driver *driver2 = b;
 448
 449         return driver2->priority - driver1->priority;
 450 }
 451
 452 static gboolean match_driver(struct connman_element *element,
 453                                         struct connman_driver *driver)
 454 {
 455         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 456                 return FALSE;
 457
 458         if (element->type == driver->type ||
 459                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 460                 return TRUE;
 461
 462         return FALSE;
 463 }
 464
 465 static gboolean probe_driver(GNode *node, gpointer data)
 466 {
 467         struct connman_element *element = node->data;
 468         struct connman_driver *driver = data;
 469
 470         DBG("element %p name %s", element, element->name);
 471
 472         if (!element->driver && match_driver(element, driver) == TRUE) {
 473                 if (driver->probe(element) < 0)
 474                         return FALSE;
 475
 476                 element->driver = driver;
 477         }
 478
 479         return FALSE;
 480 }
 481
 482 void __connman_driver_rescan(struct connman_driver *driver)
 483 {
 484         DBG("driver %p name %s", driver, driver->name);
 485
 486         if (!driver->probe)
 487                 return;
 488
 489         if (element_root != NULL)
 490                 g_node_traverse(element_root, G_PRE_ORDER,
 491                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 492 }
 493
 494 /**
 495  * connman_driver_register:
 496  * @driver: driver definition
 497  *
 498  * Register a new driver
 499  *
 500  * Returns: %0 on success
 501  */
 502 int connman_driver_register(struct connman_driver *driver)
 503 {
 504         DBG("driver %p name %s", driver, driver->name);
 505
 506         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 507                 return -EINVAL;
 508
 509         if (!driver->probe)
 510                 return -EINVAL;
 511
 512         driver_list = g_slist_insert_sorted(driver_list, driver,
 513                                                         compare_priority);
 514
 515         if (started == FALSE)
 516                 return 0;
 517
 518         if (element_root != NULL)
 519                 g_node_traverse(element_root, G_PRE_ORDER,
 520                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 521
 522         return 0;
 523 }
 524
 525 static gboolean remove_driver(GNode *node, gpointer data)
 526 {
 527         struct connman_element *element = node->data;
 528         struct connman_driver *driver = data;
 529
 530         DBG("element %p name %s", element, element->name);
 531
 532         if (element->driver == driver) {
 533                 if (driver->remove)
 534                         driver->remove(element);
 535
 536                 element->driver = NULL;
 537         }
 538
 539         return FALSE;
 540 }
 541
 542 /**
 543  * connman_driver_unregister:
 544  * @driver: driver definition
 545  *
 546  * Remove a previously registered driver
 547  */
 548 void connman_driver_unregister(struct connman_driver *driver)
 549 {
 550         DBG("driver %p name %s", driver, driver->name);
 551
 552         driver_list = g_slist_remove(driver_list, driver);
 553
 554         if (element_root != NULL)
 555                 g_node_traverse(element_root, G_POST_ORDER,
 556                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 557 }
 558
 559 static void unregister_property(gpointer data)
 560 {
 561         struct connman_property *property = data;
 562
 563         DBG("property %p", property);
 564
 565         g_free(property->value);
 566         g_free(property);
 567 }
 568
 569 static void unregister_child(gpointer data)
 570 {
 571         struct connman_element *element = data;
 572
 573         DBG("element %p", element);
 574
 575         connman_element_unref(element);
 576 }
 577
 578 void __connman_element_initialize(struct connman_element *element)
 579 {
 580         DBG("element %p", element);
 581
 582         element->refcount = 1;
 583
 584         element->name    = NULL;
 585         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 586         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 587         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 588         element->index   = -1;
 589         element->enabled = FALSE;
 590
 591         element->children = g_hash_table_new_full(g_str_hash, g_str_equal,
 592                                                 NULL, unregister_child);
 593
 594         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 595                                                 g_free, unregister_property);
 596 }
 597
 598 /**
 599  * connman_element_create:
 600  * @name: element name
 601  *
 602  * Allocate a new element and assign the given #name to it. If the name
 603  * is #NULL, it will be later on created based on the element type.
 604  *
 605  * Returns: a newly-allocated #connman_element structure
 606  */
 607 struct connman_element *connman_element_create(const char *name)
 608 {
 609         struct connman_element *element;
 610
 611         element = g_try_new0(struct connman_element, 1);
 612         if (element == NULL)
 613                 return NULL;
 614
 615         DBG("element %p", element);
 616
 617         __connman_element_initialize(element);
 618
 619         return element;
 620 }
 621
 622 struct connman_element *connman_element_ref(struct connman_element *element)
 623 {
 624         DBG("element %p name %s refcount %d", element, element->name,
 625                                 g_atomic_int_get(&element->refcount) + 1);
 626
 627         g_atomic_int_inc(&element->refcount);
 628
 629         return element;
 630 }
 631
 632 static void free_properties(struct connman_element *element)
 633 {
 634         DBG("element %p name %s", element, element->name);
 635
 636         g_hash_table_destroy(element->properties);
 637         element->properties = NULL;
 638 }
 639
 640 static void free_children(struct connman_element *element)
 641 {
 642         DBG("element %p name %s", element, element->name);
 643
 644         g_hash_table_destroy(element->children);
 645         element->children = NULL;
 646 }
 647
 648 void connman_element_unref(struct connman_element *element)
 649 {
 650         DBG("element %p name %s refcount %d", element, element->name,
 651                                 g_atomic_int_get(&element->refcount) - 1);
 652
 653         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 654                 if (element->destruct)
 655                         element->destruct(element);
 656                 free_children(element);
 657                 free_properties(element);
 658                 g_free(element->hostname);
 659                 g_free(element->domainname);
 660                 g_free(element->ipv4.address);
 661                 g_free(element->ipv4.netmask);
 662                 g_free(element->ipv4.gateway);
 663                 g_free(element->ipv4.network);
 664                 g_free(element->ipv4.broadcast);
 665                 g_free(element->ipv4.nameserver);
 666                 g_free(element->ipv4.timeserver);
 667                 g_free(element->ipv4.pac);
 668                 g_free(element->ipv6.address);
 669                 g_free(element->ipv6.network);
 670                 g_free(element->devname);
 671                 g_free(element->path);
 672                 g_free(element->name);
 673                 g_free(element);
 674         }
 675 }
 676
 677 static int set_static_property(struct connman_element *element,
 678                                 const char *name, int type, const void *value)
 679 {
 680         struct connman_property *property;
 681
 682         DBG("element %p name %s", element, element->name);
 683
 684         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 685                 return -EINVAL;
 686
 687         property = g_try_new0(struct connman_property, 1);
 688         if (property == NULL)
 689                 return -ENOMEM;
 690
 691         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 692         property->type = type;
 693
 694         DBG("name %s type %d value %p", name, type, value);
 695
 696         switch (type) {
 697         case DBUS_TYPE_STRING:
 698                 property->value = g_strdup(*((const char **) value));
 699                 break;
 700         case DBUS_TYPE_BOOLEAN:
 701         case DBUS_TYPE_BYTE:
 702                 property->value = g_try_malloc(1);
 703                 if (property->value != NULL)
 704                         memcpy(property->value, value, 1);
 705                 break;
 706         }
 707
 708         g_hash_table_replace(element->properties, g_strdup(name), property);
 709
 710         return 0;
 711 }
 712
 713 static int set_static_array_property(struct connman_element *element,
 714                         const char *name, int type, const void *value, int len)
 715 {
 716         struct connman_property *property;
 717
 718         DBG("element %p name %s", element, element->name);
 719
 720         if (type != DBUS_TYPE_BYTE)
 721                 return -EINVAL;
 722
 723         property = g_try_new0(struct connman_property, 1);
 724         if (property == NULL)
 725                 return -ENOMEM;
 726
 727         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 728         property->type    = DBUS_TYPE_ARRAY;
 729         property->subtype = type;
 730
 731         DBG("name %s type %d value %p", name, type, value);
 732
 733         switch (type) {
 734         case DBUS_TYPE_BYTE:
 735                 property->value = g_try_malloc(len);
 736                 if (property->value != NULL) {
 737                         memcpy(property->value,
 738                                 *((const unsigned char **) value), len);
 739                         property->size = len;
 740                 }
 741                 break;
 742         }
 743
 744         g_hash_table_replace(element->properties, g_strdup(name), property);
 745
 746         return 0;
 747 }
 748
 749 int connman_element_get_value(struct connman_element *element,
 750                                 enum connman_property_id id, void *value)
 751 {
 752         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 753                 return -EINVAL;
 754
 755         switch (id) {
 756         case CONNMAN_PROPERTY_ID_HOSTNAME:
 757                 if (element->hostname == NULL)
 758                         return connman_element_get_value(element->parent,
 759                                                                 id, value);
 760                 *((char **) value) = element->hostname;
 761                 break;
 762         case CONNMAN_PROPERTY_ID_DOMAINNAME:
 763                 if (element->domainname == NULL)
 764                         return connman_element_get_value(element->parent,
 765                                                                 id, value);
 766                 *((char **) value) = element->domainname;
 767                 break;
 768         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 769                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 770                         return connman_element_get_value(element->parent,
 771                                                                 id, value);
 772                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 773                 break;
 774         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 775                 if (element->ipv4.address == NULL)
 776                         return connman_element_get_value(element->parent,
 777                                                                 id, value);
 778                 *((char **) value) = element->ipv4.address;
 779                 break;
 780         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 781                 if (element->ipv4.netmask == NULL)
 782                         return connman_element_get_value(element->parent,
 783                                                                 id, value);
 784                 *((char **) value) = element->ipv4.netmask;
 785                 break;
 786         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 787                 if (element->ipv4.gateway == NULL)
 788                         return connman_element_get_value(element->parent,
 789                                                                 id, value);
 790                 *((char **) value) = element->ipv4.gateway;
 791                 break;
 792         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 793                 if (element->ipv4.broadcast == NULL)
 794                         return connman_element_get_value(element->parent,
 795                                                                 id, value);
 796                 *((char **) value) = element->ipv4.broadcast;
 797                 break;
 798         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 799                 if (element->ipv4.nameserver == NULL)
 800                         return connman_element_get_value(element->parent,
 801                                                                 id, value);
 802                 *((char **) value) = element->ipv4.nameserver;
 803                 break;
 804         case CONNMAN_PROPERTY_ID_IPV4_TIMESERVER:
 805                 if (element->ipv4.timeserver == NULL)
 806                         return connman_element_get_value(element->parent,
 807                                                                 id, value);
 808                 *((char **) value) = element->ipv4.timeserver;
 809                 break;
 810         case CONNMAN_PROPERTY_ID_IPV4_PAC:
 811                 if (element->ipv4.pac == NULL)
 812                         return connman_element_get_value(element->parent,
 813                                                                 id, value);
 814                 *((char **) value) = element->ipv4.pac;
 815                 break;
 816         case CONNMAN_PROPERTY_ID_IPV6_GATEWAY:
 817                 if (element->ipv6.gateway == NULL)
 818                         return connman_element_get_value(element->parent,
 819                                                                 id, value);
 820                 *((char **) value) = element->ipv6.gateway;
 821                 break;
 822
 823         default:
 824                 return -EINVAL;
 825         }
 826
 827         return 0;
 828 }
 829
 830 static gboolean get_static_property(struct connman_element *element,
 831                                                 const char *name, void *value)
 832 {
 833         struct connman_property *property;
 834         gboolean found = FALSE;
 835
 836         DBG("element %p name %s", element, element->name);
 837
 838         property = g_hash_table_lookup(element->properties, name);
 839         if (property != NULL) {
 840                 switch (property->type) {
 841                 case DBUS_TYPE_STRING:
 842                         *((char **) value) = property->value;
 843                         found = TRUE;
 844                         break;
 845                 case DBUS_TYPE_BOOLEAN:
 846                 case DBUS_TYPE_BYTE:
 847                         memcpy(value, property->value, 1);
 848                         found = TRUE;
 849                         break;
 850                 }
 851         }
 852
 853         if (found == FALSE && element->parent != NULL)
 854                 return get_static_property(element->parent, name, value);
 855
 856         return found;
 857 }
 858
 859 static gboolean get_static_array_property(struct connman_element *element,
 860                         const char *name, void *value, unsigned int *len)
 861 {
 862         struct connman_property *property;
 863         gboolean found = FALSE;
 864
 865         DBG("element %p name %s", element, element->name);
 866
 867         property = g_hash_table_lookup(element->properties, name);
 868         if (property != NULL) {
 869                 *((void **) value) = property->value;
 870                 *len = property->size;
 871                 found = TRUE;
 872         }
 873
 874         return found;
 875 }
 876
 877 /**
 878  * connman_element_set_string:
 879  * @element: element structure
 880  * @key: unique identifier
 881  * @value: string value
 882  *
 883  * Set string value for specific key
 884  */
 885 int connman_element_set_string(struct connman_element *element,
 886                                         const char *key, const char *value)
 887 {
 888         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 889 }
 890
 891 /**
 892  * connman_element_get_string:
 893  * @element: element structure
 894  * @key: unique identifier
 895  *
 896  * Get string value for specific key
 897  */
 898 const char *connman_element_get_string(struct connman_element *element,
 899                                                         const char *key)
 900 {
 901         const char *value;
 902
 903         if (get_static_property(element, key, &value) == FALSE)
 904                 return NULL;
 905
 906         return value;
 907 }
 908
 909 /**
 910  * connman_element_set_bool:
 911  * @element: element structure
 912  * @key: unique identifier
 913  * @value: boolean value
 914  *
 915  * Set boolean value for specific key
 916  */
 917 int connman_element_set_bool(struct connman_element *element,
 918                                         const char *key, connman_bool_t value)
 919 {
 920         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
 921 }
 922
 923 /**
 924  * connman_element_get_bool:
 925  * @element: element structure
 926  * @key: unique identifier
 927  *
 928  * Get boolean value for specific key
 929  */
 930 connman_bool_t connman_element_get_bool(struct connman_element *element,
 931                                                         const char *key)
 932 {
 933         connman_bool_t value;
 934
 935         if (get_static_property(element, key, &value) == FALSE)
 936                 return FALSE;
 937
 938         return value;
 939 }
 940
 941 /**
 942  * connman_element_set_uint8:
 943  * @element: element structure
 944  * @key: unique identifier
 945  * @value: integer value
 946  *
 947  * Set integer value for specific key
 948  */
 949 int connman_element_set_uint8(struct connman_element *element,
 950                                         const char *key, connman_uint8_t value)
 951 {
 952         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 953 }
 954
 955 /**
 956  * connman_element_get_uint8:
 957  * @element: element structure
 958  * @key: unique identifier
 959  *
 960  * Get integer value for specific key
 961  */
 962 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 963                                                         const char *key)
 964 {
 965         connman_uint8_t value;
 966
 967         if (get_static_property(element, key, &value) == FALSE)
 968                 return 0;
 969
 970         return value;
 971 }
 972
 973 /**
 974  * connman_element_set_blob:
 975  * @element: element structure
 976  * @key: unique identifier
 977  * @data: blob data
 978  * @size: blob size
 979  *
 980  * Set binary blob value for specific key
 981  */
 982 int connman_element_set_blob(struct connman_element *element,
 983                         const char *key, const void *data, unsigned int size)
 984 {
 985         return set_static_array_property(element, key,
 986                                                 DBUS_TYPE_BYTE, &data, size);
 987 }
 988
 989 /**
 990  * connman_element_get_blob:
 991  * @element: element structure
 992  * @key: unique identifier
 993  * @size: pointer to blob size
 994  *
 995  * Get binary blob value for specific key
 996  */
 997 const void *connman_element_get_blob(struct connman_element *element,
 998                                         const char *key, unsigned int *size)
 999 {
1000         void *value;
1001
1002         if (get_static_array_property(element, key, &value, size) == FALSE)
1003                 return NULL;
1004
1005         return value;
1006 }
1007
1008 static void probe_element(struct connman_element *element)
1009 {
1010         GSList *list;
1011
1012         DBG("element %p name %s", element, element->name);
1013
1014         for (list = driver_list; list; list = list->next) {
1015                 struct connman_driver *driver = list->data;
1016
1017                 if (match_driver(element, driver) == FALSE)
1018                         continue;
1019
1020                 DBG("driver %p name %s", driver, driver->name);
1021
1022                 if (driver->probe(element) == 0) {
1023                         element->driver = driver;
1024                         break;
1025                 }
1026         }
1027 }
1028
1029 static void register_element(gpointer data, gpointer user_data)
1030 {
1031         struct connman_element *element = data;
1032         const gchar *basepath;
1033         GNode *node;
1034
1035         if (element->parent) {
1036                 node = g_node_find(element_root, G_PRE_ORDER,
1037                                         G_TRAVERSE_ALL, element->parent);
1038                 basepath = element->parent->path;
1039         } else {
1040                 element->parent = element_root->data;
1041
1042                 node = element_root;
1043                 basepath = CONNMAN_PATH "/device";
1044         }
1045
1046         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1047
1048         if (node == NULL) {
1049                 connman_error("Element registration for %s failed",
1050                                                         element->path);
1051                 return;
1052         }
1053
1054         DBG("element %p path %s", element, element->path);
1055
1056         g_node_append_data(node, element);
1057
1058         if (started == FALSE)
1059                 return;
1060
1061         probe_element(element);
1062 }
1063
1064 gboolean __connman_element_device_isfiltered(const char *devname)
1065 {
1066         if (device_filter == NULL)
1067                 goto nodevice;
1068
1069         if (g_pattern_match_simple(device_filter, devname) == FALSE) {
1070                 DBG("ignoring device %s (match)", devname);
1071                 return TRUE;
1072         }
1073
1074 nodevice:
1075         if (nodevice_filter == NULL)
1076                 return FALSE;
1077
1078         if (g_pattern_match_simple(nodevice_filter, devname) == TRUE) {
1079                 DBG("ignoring device %s (no match)", devname);
1080                 return TRUE;
1081         }
1082
1083         return FALSE;
1084 }
1085
1086 /**
1087  * connman_element_register:
1088  * @element: the element to register
1089  * @parent: the parent to register the element with
1090  *
1091  * Register an element with the core. It will be register under the given
1092  * parent of if %NULL is provided under the root element.
1093  *
1094  * Returns: %0 on success
1095  */
1096 int connman_element_register(struct connman_element *element,
1097                                         struct connman_element *parent)
1098 {
1099         DBG("element %p name %s parent %p", element, element->name, parent);
1100
1101         if (element->devname == NULL)
1102                 element->devname = g_strdup(element->name);
1103
1104         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1105                 goto setup;
1106
1107         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1108                 return -EPERM;
1109
1110 setup:
1111         if (connman_element_ref(element) == NULL)
1112                 return -EINVAL;
1113
1114         if (element->name == NULL) {
1115                 element->name = g_strdup(type2string(element->type));
1116                 if (element->name == NULL) {
1117                         return -EINVAL;
1118                 }
1119         }
1120
1121         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1122                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1123
1124         element->parent = parent;
1125
1126         register_element(element, NULL);
1127
1128         return 0;
1129 }
1130
1131 static gboolean remove_element(GNode *node, gpointer user_data)
1132 {
1133         struct connman_element *element = node->data;
1134         struct connman_element *root = user_data;
1135
1136         DBG("element %p name %s", element, element->name);
1137
1138         if (element == root)
1139                 return FALSE;
1140
1141         g_node_unlink(node);
1142
1143         if (element->driver) {
1144                 if (element->driver->remove)
1145                         element->driver->remove(element);
1146
1147                 element->driver = NULL;
1148         }
1149
1150         g_node_destroy(node);
1151
1152         connman_element_unref(element);
1153
1154         return FALSE;
1155 }
1156
1157 struct unregister_type {
1158         struct connman_element *root;
1159         enum connman_element_type type;
1160 };
1161
1162 static gboolean remove_element_type(GNode *node, gpointer user_data)
1163 {
1164         struct unregister_type *children_type = user_data;
1165         struct connman_element *root = children_type->root;
1166         struct connman_element *element = node->data;
1167         enum connman_element_type type = children_type->type;
1168
1169         DBG("element %p name %s", element, element->name);
1170
1171         if (element == root)
1172                 return FALSE;
1173
1174         if(element->type != type)
1175                 return FALSE;
1176
1177         g_node_unlink(node);
1178
1179         if (element->driver) {
1180                 if (element->driver->remove)
1181                         element->driver->remove(element);
1182
1183                 element->driver = NULL;
1184         }
1185
1186         g_node_destroy(node);
1187
1188         connman_element_unref(element);
1189
1190         return FALSE;
1191 }
1192
1193
1194 void connman_element_unregister(struct connman_element *element)
1195 {
1196         GNode *node;
1197
1198         DBG("element %p name %s", element, element->name);
1199
1200         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1201
1202         if (node != NULL)
1203                 g_node_traverse(node, G_POST_ORDER,
1204                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1205 }
1206
1207 void connman_element_unregister_children(struct connman_element *element)
1208 {
1209         GNode *node;
1210
1211         DBG("element %p name %s", element, element->name);
1212
1213         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1214
1215         if (node != NULL)
1216                 g_node_traverse(node, G_POST_ORDER,
1217                                 G_TRAVERSE_ALL, -1, remove_element, element);
1218 }
1219
1220 void connman_element_unregister_children_type(struct connman_element *element, enum connman_element_type type)
1221 {
1222         GNode *node;
1223
1224         DBG("element %p name %s", element, element->name);
1225
1226         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1227
1228         if (node != NULL) {
1229                 struct unregister_type children_type;
1230
1231                 children_type.root = element;
1232                 children_type.type = type;
1233                 g_node_traverse(node, G_POST_ORDER,
1234                                 G_TRAVERSE_ALL, -1, remove_element_type, &children_type);
1235         }
1236 }
1237
1238
1239 static gboolean update_element(GNode *node, gpointer user_data)
1240 {
1241         struct connman_element *element = node->data;
1242
1243         DBG("element %p name %s", element, element->name);
1244
1245         if (element->driver && element->driver->update)
1246                 element->driver->update(element);
1247
1248         return FALSE;
1249 }
1250
1251 void connman_element_update(struct connman_element *element)
1252 {
1253         GNode *node;
1254
1255         DBG("element %p name %s", element, element->name);
1256
1257         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1258
1259         if (node != NULL)
1260                 g_node_traverse(node, G_PRE_ORDER,
1261                                 G_TRAVERSE_ALL, -1, update_element, element);
1262 }
1263
1264 int connman_element_set_enabled(struct connman_element *element,
1265                                                         gboolean enabled)
1266 {
1267         if (element->enabled == enabled)
1268                 return 0;
1269
1270         element->enabled = enabled;
1271
1272         connman_element_update(element);
1273
1274         return 0;
1275 }
1276
1277 static enum connman_service_error convert_error(enum connman_element_error error)
1278 {
1279         switch (error) {
1280         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1281         case CONNMAN_ELEMENT_ERROR_FAILED:
1282                 break;
1283         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1284                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1285         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1286                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1287         }
1288
1289         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1290 }
1291
1292 /**
1293  * connman_element_set_error:
1294  * @element: element structure
1295  * @error: error identifier
1296  *
1297  * Set error state and specific error identifier
1298  */
1299 void connman_element_set_error(struct connman_element *element,
1300                                         enum connman_element_error error)
1301 {
1302         struct connman_service *service;
1303
1304         DBG("element %p error %d", element, error);
1305
1306         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1307                 return;
1308
1309         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1310         element->error = error;
1311
1312         if (element->driver && element->driver->change)
1313                 element->driver->change(element);
1314
1315         service = __connman_element_get_service(element);
1316         __connman_service_indicate_error(service, convert_error(error));
1317 }
1318
1319 int __connman_element_init(const char *device, const char *nodevice)
1320 {
1321         struct connman_element *element;
1322
1323         DBG("");
1324
1325         connection = connman_dbus_get_connection();
1326         if (connection == NULL)
1327                 return -EIO;
1328
1329         device_filter = g_strdup(device);
1330         nodevice_filter = g_strdup(nodevice);
1331
1332         element = connman_element_create("root");
1333
1334         element->path = g_strdup("/");
1335         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1336
1337         element_root = g_node_new(element);
1338
1339         __connman_technology_init();
1340         __connman_notifier_init();
1341         __connman_location_init();
1342         __connman_service_init();
1343         __connman_provider_init();
1344         __connman_network_init();
1345         __connman_device_init();
1346
1347         return 0;
1348 }
1349
1350 static gboolean probe_node(GNode *node, gpointer data)
1351 {
1352         struct connman_element *element = node->data;
1353
1354         DBG("element %p name %s", element, element->name);
1355
1356         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1357                 return FALSE;
1358
1359         if (element->driver)
1360                 return FALSE;
1361
1362         probe_element(element);
1363
1364         return FALSE;
1365 }
1366
1367 void __connman_element_start(void)
1368 {
1369         DBG("");
1370
1371         __connman_storage_init_profile();
1372
1373         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1374                                                         probe_node, NULL);
1375
1376         started = TRUE;
1377
1378         __connman_rtnl_start();
1379         __connman_udev_start();
1380
1381         __connman_connection_init();
1382         __connman_ipv4_init();
1383         __connman_dhcp_init();
1384         __connman_wpad_init();
1385
1386         __connman_rfkill_init();
1387 }
1388
1389 void __connman_element_stop(void)
1390 {
1391         DBG("");
1392
1393         __connman_rfkill_cleanup();
1394
1395         __connman_wpad_cleanup();
1396         __connman_dhcp_cleanup();
1397         __connman_ipv4_cleanup();
1398         __connman_provider_cleanup();
1399         __connman_connection_cleanup();
1400 }
1401
1402 static gboolean free_driver(GNode *node, gpointer data)
1403 {
1404         struct connman_element *element = node->data;
1405
1406         DBG("element %p name %s", element, element->name);
1407
1408         if (element->driver) {
1409                 if (element->driver->remove)
1410                         element->driver->remove(element);
1411
1412                 element->driver = NULL;
1413         }
1414
1415         return FALSE;
1416 }
1417
1418 static gboolean free_node(GNode *node, gpointer data)
1419 {
1420         struct connman_element *element = node->data;
1421
1422         DBG("element %p name %s", element, element->name);
1423
1424         if (g_node_depth(node) > 1)
1425                 connman_element_unregister(element);
1426
1427         return FALSE;
1428 }
1429
1430 void __connman_element_cleanup(void)
1431 {
1432         DBG("");
1433
1434         __connman_device_cleanup();
1435         __connman_network_cleanup();
1436         __connman_service_cleanup();
1437         __connman_location_cleanup();
1438         __connman_notifier_cleanup();
1439         __connman_technology_cleanup();
1440
1441         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1442                                                         free_driver, NULL);
1443
1444         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1445                                                         free_node, NULL);
1446
1447         g_node_destroy(element_root);
1448         element_root = NULL;
1449
1450         g_free(nodevice_filter);
1451         g_free(device_filter);
1452
1453         if (connection == NULL)
1454                 return;
1455
1456         dbus_connection_unref(connection);
1457 }