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 struct count_data {
 180         enum connman_element_type type;
 181         int count;
 182 };
 183
 184 static gboolean count_element(GNode *node, gpointer user_data)
 185 {
 186         struct connman_element *element = node->data;
 187         struct count_data *data = user_data;
 188
 189         DBG("element %p name %s", element, element->name);
 190
 191         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 192                 return FALSE;
 193
 194         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 195                                         data->type != element->type)
 196                 return FALSE;
 197
 198         data->count++;
 199
 200         return FALSE;
 201 }
 202
 203 int __connman_element_count(struct connman_element *element,
 204                                         enum connman_element_type type)
 205 {
 206         struct count_data data = { type, 0 };
 207         GNode *node;
 208
 209         DBG("");
 210
 211         if (element != NULL) {
 212                 node = g_node_find(element_root, G_PRE_ORDER,
 213                                                 G_TRAVERSE_ALL, element);
 214                 if (node == NULL)
 215                         return 0;
 216         } else
 217                 node = element_root;
 218
 219         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 220                                                 count_element, &data);
 221
 222         return data.count;
 223 }
 224
 225 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 226 {
 227         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 228                                                 element->network != NULL)
 229                 return element->network;
 230
 231         if (element->parent == NULL)
 232                 return NULL;
 233
 234         return __connman_element_get_network(element->parent);
 235 }
 236
 237 struct connman_service *__connman_element_get_service(struct connman_element *element)
 238 {
 239         struct connman_service *service = NULL;
 240         struct connman_network *network;
 241         struct connman_device *device;
 242         enum connman_device_type type;
 243
 244         device = __connman_element_get_device(element);
 245         if (device == NULL)
 246                 return NULL;
 247
 248         type = connman_device_get_type(device);
 249
 250         switch (type) {
 251         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 252         case CONNMAN_DEVICE_TYPE_VENDOR:
 253         case CONNMAN_DEVICE_TYPE_GPS:
 254                 break;
 255         case CONNMAN_DEVICE_TYPE_ETHERNET:
 256         case CONNMAN_DEVICE_TYPE_WIFI:
 257         case CONNMAN_DEVICE_TYPE_WIMAX:
 258         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 259         case CONNMAN_DEVICE_TYPE_CELLULAR:
 260         case CONNMAN_DEVICE_TYPE_MBM:
 261         case CONNMAN_DEVICE_TYPE_HSO:
 262                 network = __connman_element_get_network(element);
 263                 if (network == NULL)
 264                         return NULL;
 265                 service = __connman_service_lookup_from_network(network);
 266                 break;
 267         }
 268
 269         return service;
 270 }
 271
 272 struct connman_device *__connman_element_get_device(struct connman_element *element)
 273 {
 274         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 275                                                 element->device != NULL)
 276                 return element->device;
 277
 278         if (element->parent == NULL)
 279                 return NULL;
 280
 281         return __connman_element_get_device(element->parent);
 282 }
 283
 284 const char *__connman_element_get_device_path(struct connman_element *element)
 285 {
 286         struct connman_device *device;
 287
 288         device = __connman_element_get_device(element);
 289         if (device == NULL)
 290                 return NULL;
 291
 292         return connman_device_get_path(device);
 293 }
 294
 295 const char *__connman_element_get_network_path(struct connman_element *element)
 296 {
 297         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 298                                                 element->network != NULL)
 299                 return element->path;
 300
 301         if (element->parent == NULL)
 302                 return NULL;
 303
 304         return __connman_element_get_network_path(element->parent);
 305 }
 306
 307 struct find_data {
 308         enum connman_service_type type;
 309         struct connman_device *device;
 310 };
 311
 312 static gboolean find_device(GNode *node, gpointer user_data)
 313 {
 314         struct connman_element *element = node->data;
 315         struct find_data *data = user_data;
 316
 317         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 318                 return FALSE;
 319
 320         if (element->device == NULL)
 321                 return FALSE;
 322
 323         if (data->type != connman_device_get_type(element->device))
 324                 return FALSE;
 325
 326         data->device = element->device;
 327
 328         return TRUE;
 329 }
 330
 331 struct connman_device *__connman_element_find_device(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, find_device, &data);
 337
 338         return data.device;
 339 }
 340
 341 static gboolean request_scan(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_ETHERNET:
 359         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 360         case CONNMAN_SERVICE_TYPE_CELLULAR:
 361         case CONNMAN_SERVICE_TYPE_VPN:
 362                 return FALSE;
 363         case CONNMAN_SERVICE_TYPE_WIFI:
 364         case CONNMAN_SERVICE_TYPE_WIMAX:
 365                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 366                                                         data->type != type)
 367                         return FALSE;
 368                 break;
 369         }
 370
 371         __connman_device_scan(element->device);
 372
 373         return FALSE;
 374 }
 375
 376 int __connman_element_request_scan(enum connman_service_type type)
 377 {
 378         struct find_data data = { .type = type, .device = NULL };
 379
 380         g_node_traverse(element_root, G_PRE_ORDER,
 381                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 382
 383         return 0;
 384 }
 385
 386 static gboolean enable_technology(GNode *node, gpointer user_data)
 387 {
 388         struct connman_element *element = node->data;
 389         struct find_data *data = user_data;
 390         enum connman_service_type type;
 391
 392         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 393                 return FALSE;
 394
 395         if (element->device == NULL)
 396                 return FALSE;
 397
 398         type = __connman_device_get_service_type(element->device);
 399
 400         switch (type) {
 401         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 402         case CONNMAN_SERVICE_TYPE_SYSTEM:
 403         case CONNMAN_SERVICE_TYPE_VPN:
 404                 return FALSE;
 405         case CONNMAN_SERVICE_TYPE_ETHERNET:
 406         case CONNMAN_SERVICE_TYPE_WIFI:
 407         case CONNMAN_SERVICE_TYPE_WIMAX:
 408         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 409         case CONNMAN_SERVICE_TYPE_CELLULAR:
 410                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 411                                                         data->type != type)
 412                         return FALSE;
 413                 break;
 414         }
 415
 416         __connman_device_enable_persistent(element->device);
 417
 418         return FALSE;
 419 }
 420
 421 int __connman_element_enable_technology(enum connman_service_type type)
 422 {
 423         struct find_data data = { .type = type, .device = NULL };
 424
 425         g_node_traverse(element_root, G_PRE_ORDER,
 426                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 427
 428         return 0;
 429 }
 430
 431 static gboolean disable_technology(GNode *node, gpointer user_data)
 432 {
 433         struct connman_element *element = node->data;
 434         struct find_data *data = user_data;
 435         enum connman_service_type type;
 436
 437         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 438                 return FALSE;
 439
 440         if (element->device == NULL)
 441                 return FALSE;
 442
 443         type = __connman_device_get_service_type(element->device);
 444
 445         switch (type) {
 446         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 447         case CONNMAN_SERVICE_TYPE_SYSTEM:
 448         case CONNMAN_SERVICE_TYPE_VPN:
 449                 return FALSE;
 450         case CONNMAN_SERVICE_TYPE_ETHERNET:
 451         case CONNMAN_SERVICE_TYPE_WIFI:
 452         case CONNMAN_SERVICE_TYPE_WIMAX:
 453         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 454         case CONNMAN_SERVICE_TYPE_CELLULAR:
 455                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 456                                                         data->type != type)
 457                         return FALSE;
 458                 break;
 459         }
 460
 461         __connman_device_disable_persistent(element->device);
 462
 463         return FALSE;
 464 }
 465
 466 int __connman_element_disable_technology(enum connman_service_type type)
 467 {
 468         struct find_data data = { .type = type, .device = NULL };
 469
 470         g_node_traverse(element_root, G_PRE_ORDER,
 471                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 472
 473         return 0;
 474 }
 475
 476 static gint compare_priority(gconstpointer a, gconstpointer b)
 477 {
 478         const struct connman_driver *driver1 = a;
 479         const struct connman_driver *driver2 = b;
 480
 481         return driver2->priority - driver1->priority;
 482 }
 483
 484 static gboolean match_driver(struct connman_element *element,
 485                                         struct connman_driver *driver)
 486 {
 487         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 488                 return FALSE;
 489
 490         if (element->type == driver->type ||
 491                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 492                 return TRUE;
 493
 494         return FALSE;
 495 }
 496
 497 static gboolean probe_driver(GNode *node, gpointer data)
 498 {
 499         struct connman_element *element = node->data;
 500         struct connman_driver *driver = data;
 501
 502         DBG("element %p name %s", element, element->name);
 503
 504         if (!element->driver && match_driver(element, driver) == TRUE) {
 505                 if (driver->probe(element) < 0)
 506                         return FALSE;
 507
 508                 element->driver = driver;
 509         }
 510
 511         return FALSE;
 512 }
 513
 514 void __connman_driver_rescan(struct connman_driver *driver)
 515 {
 516         DBG("driver %p name %s", driver, driver->name);
 517
 518         if (!driver->probe)
 519                 return;
 520
 521         if (element_root != NULL)
 522                 g_node_traverse(element_root, G_PRE_ORDER,
 523                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 524 }
 525
 526 /**
 527  * connman_driver_register:
 528  * @driver: driver definition
 529  *
 530  * Register a new driver
 531  *
 532  * Returns: %0 on success
 533  */
 534 int connman_driver_register(struct connman_driver *driver)
 535 {
 536         DBG("driver %p name %s", driver, driver->name);
 537
 538         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 539                 return -EINVAL;
 540
 541         if (!driver->probe)
 542                 return -EINVAL;
 543
 544         driver_list = g_slist_insert_sorted(driver_list, driver,
 545                                                         compare_priority);
 546
 547         if (started == FALSE)
 548                 return 0;
 549
 550         if (element_root != NULL)
 551                 g_node_traverse(element_root, G_PRE_ORDER,
 552                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 553
 554         return 0;
 555 }
 556
 557 static gboolean remove_driver(GNode *node, gpointer data)
 558 {
 559         struct connman_element *element = node->data;
 560         struct connman_driver *driver = data;
 561
 562         DBG("element %p name %s", element, element->name);
 563
 564         if (element->driver == driver) {
 565                 if (driver->remove)
 566                         driver->remove(element);
 567
 568                 element->driver = NULL;
 569         }
 570
 571         return FALSE;
 572 }
 573
 574 /**
 575  * connman_driver_unregister:
 576  * @driver: driver definition
 577  *
 578  * Remove a previously registered driver
 579  */
 580 void connman_driver_unregister(struct connman_driver *driver)
 581 {
 582         DBG("driver %p name %s", driver, driver->name);
 583
 584         driver_list = g_slist_remove(driver_list, driver);
 585
 586         if (element_root != NULL)
 587                 g_node_traverse(element_root, G_POST_ORDER,
 588                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 589 }
 590
 591 static void unregister_property(gpointer data)
 592 {
 593         struct connman_property *property = data;
 594
 595         DBG("property %p", property);
 596
 597         g_free(property->value);
 598         g_free(property);
 599 }
 600
 601 void __connman_element_initialize(struct connman_element *element)
 602 {
 603         DBG("element %p", element);
 604
 605         element->refcount = 1;
 606
 607         element->name    = NULL;
 608         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 609         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 610         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 611         element->index   = -1;
 612         element->enabled = FALSE;
 613
 614         element->configuring = FALSE;
 615
 616         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 617                                                 g_free, unregister_property);
 618 }
 619
 620 /**
 621  * connman_element_create:
 622  * @name: element name
 623  *
 624  * Allocate a new element and assign the given #name to it. If the name
 625  * is #NULL, it will be later on created based on the element type.
 626  *
 627  * Returns: a newly-allocated #connman_element structure
 628  */
 629 struct connman_element *connman_element_create(const char *name)
 630 {
 631         struct connman_element *element;
 632
 633         element = g_try_new0(struct connman_element, 1);
 634         if (element == NULL)
 635                 return NULL;
 636
 637         DBG("element %p", element);
 638
 639         __connman_element_initialize(element);
 640
 641         return element;
 642 }
 643
 644 struct connman_element *connman_element_ref(struct connman_element *element)
 645 {
 646         DBG("element %p name %s refcount %d", element, element->name,
 647                                 g_atomic_int_get(&element->refcount) + 1);
 648
 649         g_atomic_int_inc(&element->refcount);
 650
 651         return element;
 652 }
 653
 654 static void free_properties(struct connman_element *element)
 655 {
 656         DBG("element %p name %s", element, element->name);
 657
 658         g_hash_table_destroy(element->properties);
 659         element->properties = NULL;
 660 }
 661
 662 void connman_element_unref(struct connman_element *element)
 663 {
 664         DBG("element %p name %s refcount %d", element, element->name,
 665                                 g_atomic_int_get(&element->refcount) - 1);
 666
 667         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 668                 if (element->destruct)
 669                         element->destruct(element);
 670                 free_properties(element);
 671                 g_free(element->ipv4.address);
 672                 g_free(element->ipv4.netmask);
 673                 g_free(element->ipv4.gateway);
 674                 g_free(element->ipv4.network);
 675                 g_free(element->ipv4.broadcast);
 676                 g_free(element->ipv4.nameserver);
 677                 g_free(element->ipv4.timeserver);
 678                 g_free(element->ipv4.pac);
 679                 g_free(element->devname);
 680                 g_free(element->path);
 681                 g_free(element->name);
 682                 g_free(element);
 683         }
 684 }
 685
 686 static int set_static_property(struct connman_element *element,
 687                                 const char *name, int type, const void *value)
 688 {
 689         struct connman_property *property;
 690
 691         DBG("element %p name %s", element, element->name);
 692
 693         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 694                 return -EINVAL;
 695
 696         property = g_try_new0(struct connman_property, 1);
 697         if (property == NULL)
 698                 return -ENOMEM;
 699
 700         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 701         property->type = type;
 702
 703         DBG("name %s type %d value %p", name, type, value);
 704
 705         switch (type) {
 706         case DBUS_TYPE_STRING:
 707                 property->value = g_strdup(*((const char **) value));
 708                 break;
 709         case DBUS_TYPE_BOOLEAN:
 710         case DBUS_TYPE_BYTE:
 711                 property->value = g_try_malloc(1);
 712                 if (property->value != NULL)
 713                         memcpy(property->value, value, 1);
 714                 break;
 715         }
 716
 717         g_hash_table_replace(element->properties, g_strdup(name), property);
 718
 719         return 0;
 720 }
 721
 722 static int set_static_array_property(struct connman_element *element,
 723                         const char *name, int type, const void *value, int len)
 724 {
 725         struct connman_property *property;
 726
 727         DBG("element %p name %s", element, element->name);
 728
 729         if (type != DBUS_TYPE_BYTE)
 730                 return -EINVAL;
 731
 732         property = g_try_new0(struct connman_property, 1);
 733         if (property == NULL)
 734                 return -ENOMEM;
 735
 736         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 737         property->type    = DBUS_TYPE_ARRAY;
 738         property->subtype = type;
 739
 740         DBG("name %s type %d value %p", name, type, value);
 741
 742         switch (type) {
 743         case DBUS_TYPE_BYTE:
 744                 property->value = g_try_malloc(len);
 745                 if (property->value != NULL) {
 746                         memcpy(property->value,
 747                                 *((const unsigned char **) value), len);
 748                         property->size = len;
 749                 }
 750                 break;
 751         }
 752
 753         g_hash_table_replace(element->properties, g_strdup(name), property);
 754
 755         return 0;
 756 }
 757
 758 int connman_element_get_value(struct connman_element *element,
 759                                 enum connman_property_id id, void *value)
 760 {
 761         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 762                 return -EINVAL;
 763
 764         switch (id) {
 765         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 766                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 767                         return connman_element_get_value(element->parent,
 768                                                                 id, value);
 769                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 770                 break;
 771         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 772                 if (element->ipv4.address == NULL)
 773                         return connman_element_get_value(element->parent,
 774                                                                 id, value);
 775                 *((char **) value) = element->ipv4.address;
 776                 break;
 777         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 778                 if (element->ipv4.netmask == NULL)
 779                         return connman_element_get_value(element->parent,
 780                                                                 id, value);
 781                 *((char **) value) = element->ipv4.netmask;
 782                 break;
 783         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 784                 if (element->ipv4.gateway == NULL)
 785                         return connman_element_get_value(element->parent,
 786                                                                 id, value);
 787                 *((char **) value) = element->ipv4.gateway;
 788                 break;
 789         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 790                 if (element->ipv4.broadcast == NULL)
 791                         return connman_element_get_value(element->parent,
 792                                                                 id, value);
 793                 *((char **) value) = element->ipv4.broadcast;
 794                 break;
 795         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 796                 if (element->ipv4.nameserver == NULL)
 797                         return connman_element_get_value(element->parent,
 798                                                                 id, value);
 799                 *((char **) value) = element->ipv4.nameserver;
 800                 break;
 801         case CONNMAN_PROPERTY_ID_IPV4_TIMESERVER:
 802                 if (element->ipv4.timeserver == NULL)
 803                         return connman_element_get_value(element->parent,
 804                                                                 id, value);
 805                 *((char **) value) = element->ipv4.timeserver;
 806                 break;
 807         case CONNMAN_PROPERTY_ID_IPV4_PAC:
 808                 if (element->ipv4.pac == NULL)
 809                         return connman_element_get_value(element->parent,
 810                                                                 id, value);
 811                 *((char **) value) = element->ipv4.pac;
 812                 break;
 813         default:
 814                 return -EINVAL;
 815         }
 816
 817         return 0;
 818 }
 819
 820 static gboolean get_static_property(struct connman_element *element,
 821                                                 const char *name, void *value)
 822 {
 823         struct connman_property *property;
 824         gboolean found = FALSE;
 825
 826         DBG("element %p name %s", element, element->name);
 827
 828         property = g_hash_table_lookup(element->properties, name);
 829         if (property != NULL) {
 830                 switch (property->type) {
 831                 case DBUS_TYPE_STRING:
 832                         *((char **) value) = property->value;
 833                         found = TRUE;
 834                         break;
 835                 case DBUS_TYPE_BOOLEAN:
 836                 case DBUS_TYPE_BYTE:
 837                         memcpy(value, property->value, 1);
 838                         found = TRUE;
 839                         break;
 840                 }
 841         }
 842
 843         if (found == FALSE && element->parent != NULL)
 844                 return get_static_property(element->parent, name, value);
 845
 846         return found;
 847 }
 848
 849 static gboolean get_static_array_property(struct connman_element *element,
 850                         const char *name, void *value, unsigned int *len)
 851 {
 852         struct connman_property *property;
 853         gboolean found = FALSE;
 854
 855         DBG("element %p name %s", element, element->name);
 856
 857         property = g_hash_table_lookup(element->properties, name);
 858         if (property != NULL) {
 859                 *((void **) value) = property->value;
 860                 *len = property->size;
 861                 found = TRUE;
 862         }
 863
 864         return found;
 865 }
 866
 867 /**
 868  * connman_element_set_string:
 869  * @element: element structure
 870  * @key: unique identifier
 871  * @value: string value
 872  *
 873  * Set string value for specific key
 874  */
 875 int connman_element_set_string(struct connman_element *element,
 876                                         const char *key, const char *value)
 877 {
 878         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 879 }
 880
 881 /**
 882  * connman_element_get_string:
 883  * @element: element structure
 884  * @key: unique identifier
 885  *
 886  * Get string value for specific key
 887  */
 888 const char *connman_element_get_string(struct connman_element *element,
 889                                                         const char *key)
 890 {
 891         const char *value;
 892
 893         if (get_static_property(element, key, &value) == FALSE)
 894                 return NULL;
 895
 896         return value;
 897 }
 898
 899 /**
 900  * connman_element_set_bool:
 901  * @element: element structure
 902  * @key: unique identifier
 903  * @value: boolean value
 904  *
 905  * Set boolean value for specific key
 906  */
 907 int connman_element_set_bool(struct connman_element *element,
 908                                         const char *key, connman_bool_t value)
 909 {
 910         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
 911 }
 912
 913 /**
 914  * connman_element_get_bool:
 915  * @element: element structure
 916  * @key: unique identifier
 917  *
 918  * Get boolean value for specific key
 919  */
 920 connman_bool_t connman_element_get_bool(struct connman_element *element,
 921                                                         const char *key)
 922 {
 923         connman_bool_t value;
 924
 925         if (get_static_property(element, key, &value) == FALSE)
 926                 return FALSE;
 927
 928         return value;
 929 }
 930
 931 /**
 932  * connman_element_set_uint8:
 933  * @element: element structure
 934  * @key: unique identifier
 935  * @value: integer value
 936  *
 937  * Set integer value for specific key
 938  */
 939 int connman_element_set_uint8(struct connman_element *element,
 940                                         const char *key, connman_uint8_t value)
 941 {
 942         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 943 }
 944
 945 /**
 946  * connman_element_get_uint8:
 947  * @element: element structure
 948  * @key: unique identifier
 949  *
 950  * Get integer value for specific key
 951  */
 952 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 953                                                         const char *key)
 954 {
 955         connman_uint8_t value;
 956
 957         if (get_static_property(element, key, &value) == FALSE)
 958                 return 0;
 959
 960         return value;
 961 }
 962
 963 /**
 964  * connman_element_set_blob:
 965  * @element: element structure
 966  * @key: unique identifier
 967  * @data: blob data
 968  * @size: blob size
 969  *
 970  * Set binary blob value for specific key
 971  */
 972 int connman_element_set_blob(struct connman_element *element,
 973                         const char *key, const void *data, unsigned int size)
 974 {
 975         return set_static_array_property(element, key,
 976                                                 DBUS_TYPE_BYTE, &data, size);
 977 }
 978
 979 /**
 980  * connman_element_get_blob:
 981  * @element: element structure
 982  * @key: unique identifier
 983  * @size: pointer to blob size
 984  *
 985  * Get binary blob value for specific key
 986  */
 987 const void *connman_element_get_blob(struct connman_element *element,
 988                                         const char *key, unsigned int *size)
 989 {
 990         void *value;
 991
 992         if (get_static_array_property(element, key, &value, size) == FALSE)
 993                 return NULL;
 994
 995         return value;
 996 }
 997
 998 static void emit_state_change(DBusConnection *conn, const char *state)
 999 {
1000         DBusMessage *signal;
1001         DBusMessageIter iter;
1002
1003         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
1004                                 CONNMAN_MANAGER_INTERFACE, "State",
1005                                                 DBUS_TYPE_STRING, &state);
1006
1007         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1008                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1009         if (signal == NULL)
1010                 return;
1011
1012         dbus_message_iter_init_append(signal, &iter);
1013         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &state);
1014
1015         g_dbus_send_message(conn, signal);
1016 }
1017
1018 static void probe_element(struct connman_element *element)
1019 {
1020         GSList *list;
1021
1022         DBG("element %p name %s", element, element->name);
1023
1024         for (list = driver_list; list; list = list->next) {
1025                 struct connman_driver *driver = list->data;
1026
1027                 if (match_driver(element, driver) == FALSE)
1028                         continue;
1029
1030                 DBG("driver %p name %s", driver, driver->name);
1031
1032                 if (driver->probe(element) == 0) {
1033                         element->driver = driver;
1034                         break;
1035                 }
1036         }
1037 }
1038
1039 static void register_element(gpointer data, gpointer user_data)
1040 {
1041         struct connman_element *element = data;
1042         const gchar *basepath;
1043         GNode *node;
1044
1045         if (element->parent) {
1046                 node = g_node_find(element_root, G_PRE_ORDER,
1047                                         G_TRAVERSE_ALL, element->parent);
1048                 basepath = element->parent->path;
1049         } else {
1050                 element->parent = element_root->data;
1051
1052                 node = element_root;
1053                 basepath = "/device";
1054         }
1055
1056         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1057
1058         if (node == NULL) {
1059                 connman_error("Element registration for %s failed",
1060                                                         element->path);
1061                 return;
1062         }
1063
1064         DBG("element %p path %s", element, element->path);
1065
1066         g_node_append_data(node, element);
1067
1068         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1069                 element->parent->configuring = TRUE;
1070
1071 #if 0
1072                 if (__connman_element_count(NULL,
1073                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1074                         emit_state_change(connection, "connecting");
1075 #endif
1076         }
1077
1078         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1079                 struct connman_element *parent = element->parent;
1080
1081                 while (parent) {
1082                         parent->configuring = FALSE;
1083                         parent = parent->parent;
1084                 }
1085
1086                 if (__connman_element_count(NULL,
1087                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1088                         emit_state_change(connection, "online");
1089         }
1090
1091         if (started == FALSE)
1092                 return;
1093
1094         probe_element(element);
1095 }
1096
1097 gboolean __connman_element_device_isfiltered(const char *devname)
1098 {
1099         if (device_filter == NULL)
1100                 goto nodevice;
1101
1102         if (g_pattern_match_simple(device_filter, devname) == FALSE) {
1103                 DBG("ignoring device %s (match)", devname);
1104                 return TRUE;
1105         }
1106
1107 nodevice:
1108         if (nodevice_filter == NULL)
1109                 return FALSE;
1110
1111         if (g_pattern_match_simple(nodevice_filter, devname) == TRUE) {
1112                 DBG("ignoring device %s (no match)", devname);
1113                 return TRUE;
1114         }
1115
1116         return FALSE;
1117 }
1118
1119 /**
1120  * connman_element_register:
1121  * @element: the element to register
1122  * @parent: the parent to register the element with
1123  *
1124  * Register an element with the core. It will be register under the given
1125  * parent of if %NULL is provided under the root element.
1126  *
1127  * Returns: %0 on success
1128  */
1129 int connman_element_register(struct connman_element *element,
1130                                         struct connman_element *parent)
1131 {
1132         DBG("element %p name %s parent %p", element, element->name, parent);
1133
1134         if (element->devname == NULL)
1135                 element->devname = g_strdup(element->name);
1136
1137         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1138                 goto setup;
1139
1140         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1141                 return -EPERM;
1142
1143 setup:
1144         if (connman_element_ref(element) == NULL)
1145                 return -EINVAL;
1146
1147         if (element->name == NULL) {
1148                 element->name = g_strdup(type2string(element->type));
1149                 if (element->name == NULL) {
1150                         return -EINVAL;
1151                 }
1152         }
1153
1154         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1155                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1156
1157         element->parent = parent;
1158
1159         register_element(element, NULL);
1160
1161         return 0;
1162 }
1163
1164 static gboolean remove_element(GNode *node, gpointer user_data)
1165 {
1166         struct connman_element *element = node->data;
1167         struct connman_element *root = user_data;
1168
1169         DBG("element %p name %s", element, element->name);
1170
1171         if (element == root)
1172                 return FALSE;
1173
1174         if (node != NULL)
1175                 g_node_unlink(node);
1176
1177         if (element->driver) {
1178                 if (element->driver->remove)
1179                         element->driver->remove(element);
1180
1181                 element->driver = NULL;
1182         }
1183
1184         if (node != NULL)
1185                 g_node_destroy(node);
1186
1187         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1188                 if (__connman_element_count(NULL,
1189                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1190                         emit_state_change(connection, "offline");
1191         }
1192
1193         connman_element_unref(element);
1194
1195         return FALSE;
1196 }
1197
1198 void connman_element_unregister(struct connman_element *element)
1199 {
1200         GNode *node;
1201
1202         DBG("element %p name %s", element, element->name);
1203
1204         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1205
1206         if (node != NULL)
1207                 g_node_traverse(node, G_POST_ORDER,
1208                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1209 }
1210
1211 void connman_element_unregister_children(struct connman_element *element)
1212 {
1213         GNode *node;
1214
1215         DBG("element %p name %s", element, element->name);
1216
1217         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1218
1219         if (node != NULL)
1220                 g_node_traverse(node, G_POST_ORDER,
1221                                 G_TRAVERSE_ALL, -1, remove_element, element);
1222 }
1223
1224 static gboolean update_element(GNode *node, gpointer user_data)
1225 {
1226         struct connman_element *element = node->data;
1227
1228         DBG("element %p name %s", element, element->name);
1229
1230         if (element->driver && element->driver->update)
1231                 element->driver->update(element);
1232
1233         return FALSE;
1234 }
1235
1236 void connman_element_update(struct connman_element *element)
1237 {
1238         GNode *node;
1239
1240         DBG("element %p name %s", element, element->name);
1241
1242         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1243
1244         if (node != NULL)
1245                 g_node_traverse(node, G_PRE_ORDER,
1246                                 G_TRAVERSE_ALL, -1, update_element, element);
1247 }
1248
1249 int connman_element_set_enabled(struct connman_element *element,
1250                                                         gboolean enabled)
1251 {
1252         if (element->enabled == enabled)
1253                 return 0;
1254
1255         element->enabled = enabled;
1256
1257         connman_element_update(element);
1258
1259         return 0;
1260 }
1261
1262 static enum connman_service_error convert_error(enum connman_element_error error)
1263 {
1264         switch (error) {
1265         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1266         case CONNMAN_ELEMENT_ERROR_FAILED:
1267                 break;
1268         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1269                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1270         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1271                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1272         }
1273
1274         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1275 }
1276
1277 /**
1278  * connman_element_set_error:
1279  * @element: element structure
1280  * @error: error identifier
1281  *
1282  * Set error state and specific error identifier
1283  */
1284 void connman_element_set_error(struct connman_element *element,
1285                                         enum connman_element_error error)
1286 {
1287         struct connman_service *service;
1288
1289         DBG("element %p error %d", element, error);
1290
1291         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1292                 return;
1293
1294         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1295         element->error = error;
1296
1297         if (element->driver && element->driver->change)
1298                 element->driver->change(element);
1299
1300         service = __connman_element_get_service(element);
1301         __connman_service_indicate_error(service, convert_error(error));
1302 }
1303
1304 int __connman_element_init(const char *device, const char *nodevice)
1305 {
1306         struct connman_element *element;
1307
1308         DBG("");
1309
1310         connection = connman_dbus_get_connection();
1311         if (connection == NULL)
1312                 return -EIO;
1313
1314         device_filter = g_strdup(device);
1315         nodevice_filter = g_strdup(nodevice);
1316
1317         element = connman_element_create("root");
1318
1319         element->path = g_strdup("/");
1320         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1321
1322         element_root = g_node_new(element);
1323
1324         __connman_technology_init();
1325         __connman_notifier_init();
1326         __connman_service_init();
1327         __connman_provider_init();
1328         __connman_network_init();
1329         __connman_device_init();
1330
1331         return 0;
1332 }
1333
1334 static gboolean probe_node(GNode *node, gpointer data)
1335 {
1336         struct connman_element *element = node->data;
1337
1338         DBG("element %p name %s", element, element->name);
1339
1340         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1341                 return FALSE;
1342
1343         if (element->driver)
1344                 return FALSE;
1345
1346         probe_element(element);
1347
1348         return FALSE;
1349 }
1350
1351 void __connman_element_start(void)
1352 {
1353         DBG("");
1354
1355         __connman_storage_init_profile();
1356
1357         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1358                                                         probe_node, NULL);
1359
1360         started = TRUE;
1361
1362         __connman_rtnl_start();
1363         __connman_udev_start();
1364
1365         __connman_connection_init();
1366         __connman_ipv4_init();
1367         __connman_dhcp_init();
1368
1369         if (__connman_rfkill_init() < 0)
1370                 __connman_udev_enable_rfkill_processing();
1371 }
1372
1373 void __connman_element_stop(void)
1374 {
1375         DBG("");
1376
1377         __connman_rfkill_cleanup();
1378
1379         __connman_dhcp_cleanup();
1380         __connman_ipv4_cleanup();
1381         __connman_provider_cleanup();
1382         __connman_connection_cleanup();
1383 }
1384
1385 static gboolean free_driver(GNode *node, gpointer data)
1386 {
1387         struct connman_element *element = node->data;
1388
1389         DBG("element %p name %s", element, element->name);
1390
1391         if (element->driver) {
1392                 if (element->driver->remove)
1393                         element->driver->remove(element);
1394
1395                 element->driver = NULL;
1396         }
1397
1398         return FALSE;
1399 }
1400
1401 static gboolean free_node(GNode *node, gpointer data)
1402 {
1403         struct connman_element *element = node->data;
1404
1405         DBG("element %p name %s", element, element->name);
1406
1407         if (g_node_depth(node) > 1)
1408                 connman_element_unregister(element);
1409
1410         return FALSE;
1411 }
1412
1413 void __connman_element_cleanup(void)
1414 {
1415         DBG("");
1416
1417         __connman_device_cleanup();
1418         __connman_network_cleanup();
1419         __connman_service_cleanup();
1420         __connman_notifier_cleanup();
1421         __connman_technology_cleanup();
1422
1423         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1424                                                         free_driver, NULL);
1425
1426         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1427                                                         free_node, NULL);
1428
1429         g_node_destroy(element_root);
1430         element_root = NULL;
1431
1432         g_free(nodevice_filter);
1433         g_free(device_filter);
1434
1435         if (connection == NULL)
1436                 return;
1437
1438         dbus_connection_unref(connection);
1439 }