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_GPS:
 362         case CONNMAN_SERVICE_TYPE_VPN:
 363                 return FALSE;
 364         case CONNMAN_SERVICE_TYPE_WIFI:
 365         case CONNMAN_SERVICE_TYPE_WIMAX:
 366                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 367                                                         data->type != type)
 368                         return FALSE;
 369                 break;
 370         }
 371
 372         __connman_device_scan(element->device);
 373
 374         return FALSE;
 375 }
 376
 377 int __connman_element_request_scan(enum connman_service_type type)
 378 {
 379         struct find_data data = { .type = type, .device = NULL };
 380
 381         g_node_traverse(element_root, G_PRE_ORDER,
 382                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 383
 384         return 0;
 385 }
 386
 387 static gboolean enable_technology(GNode *node, gpointer user_data)
 388 {
 389         struct connman_element *element = node->data;
 390         struct find_data *data = user_data;
 391         enum connman_service_type type;
 392
 393         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 394                 return FALSE;
 395
 396         if (element->device == NULL)
 397                 return FALSE;
 398
 399         type = __connman_device_get_service_type(element->device);
 400
 401         switch (type) {
 402         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 403         case CONNMAN_SERVICE_TYPE_SYSTEM:
 404         case CONNMAN_SERVICE_TYPE_GPS:
 405         case CONNMAN_SERVICE_TYPE_VPN:
 406                 return FALSE;
 407         case CONNMAN_SERVICE_TYPE_ETHERNET:
 408         case CONNMAN_SERVICE_TYPE_WIFI:
 409         case CONNMAN_SERVICE_TYPE_WIMAX:
 410         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 411         case CONNMAN_SERVICE_TYPE_CELLULAR:
 412                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 413                                                         data->type != type)
 414                         return FALSE;
 415                 break;
 416         }
 417
 418         __connman_device_enable_persistent(element->device);
 419
 420         return FALSE;
 421 }
 422
 423 int __connman_element_enable_technology(enum connman_service_type type)
 424 {
 425         struct find_data data = { .type = type, .device = NULL };
 426
 427         g_node_traverse(element_root, G_PRE_ORDER,
 428                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 429
 430         return 0;
 431 }
 432
 433 static gboolean disable_technology(GNode *node, gpointer user_data)
 434 {
 435         struct connman_element *element = node->data;
 436         struct find_data *data = user_data;
 437         enum connman_service_type type;
 438
 439         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 440                 return FALSE;
 441
 442         if (element->device == NULL)
 443                 return FALSE;
 444
 445         type = __connman_device_get_service_type(element->device);
 446
 447         switch (type) {
 448         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 449         case CONNMAN_SERVICE_TYPE_SYSTEM:
 450         case CONNMAN_SERVICE_TYPE_GPS:
 451         case CONNMAN_SERVICE_TYPE_VPN:
 452                 return FALSE;
 453         case CONNMAN_SERVICE_TYPE_ETHERNET:
 454         case CONNMAN_SERVICE_TYPE_WIFI:
 455         case CONNMAN_SERVICE_TYPE_WIMAX:
 456         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 457         case CONNMAN_SERVICE_TYPE_CELLULAR:
 458                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 459                                                         data->type != type)
 460                         return FALSE;
 461                 break;
 462         }
 463
 464         __connman_device_disable_persistent(element->device);
 465
 466         return FALSE;
 467 }
 468
 469 int __connman_element_disable_technology(enum connman_service_type type)
 470 {
 471         struct find_data data = { .type = type, .device = NULL };
 472
 473         g_node_traverse(element_root, G_PRE_ORDER,
 474                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 475
 476         return 0;
 477 }
 478
 479 static gint compare_priority(gconstpointer a, gconstpointer b)
 480 {
 481         const struct connman_driver *driver1 = a;
 482         const struct connman_driver *driver2 = b;
 483
 484         return driver2->priority - driver1->priority;
 485 }
 486
 487 static gboolean match_driver(struct connman_element *element,
 488                                         struct connman_driver *driver)
 489 {
 490         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 491                 return FALSE;
 492
 493         if (element->type == driver->type ||
 494                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 495                 return TRUE;
 496
 497         return FALSE;
 498 }
 499
 500 static gboolean probe_driver(GNode *node, gpointer data)
 501 {
 502         struct connman_element *element = node->data;
 503         struct connman_driver *driver = data;
 504
 505         DBG("element %p name %s", element, element->name);
 506
 507         if (!element->driver && match_driver(element, driver) == TRUE) {
 508                 if (driver->probe(element) < 0)
 509                         return FALSE;
 510
 511                 element->driver = driver;
 512         }
 513
 514         return FALSE;
 515 }
 516
 517 void __connman_driver_rescan(struct connman_driver *driver)
 518 {
 519         DBG("driver %p name %s", driver, driver->name);
 520
 521         if (!driver->probe)
 522                 return;
 523
 524         if (element_root != NULL)
 525                 g_node_traverse(element_root, G_PRE_ORDER,
 526                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 527 }
 528
 529 /**
 530  * connman_driver_register:
 531  * @driver: driver definition
 532  *
 533  * Register a new driver
 534  *
 535  * Returns: %0 on success
 536  */
 537 int connman_driver_register(struct connman_driver *driver)
 538 {
 539         DBG("driver %p name %s", driver, driver->name);
 540
 541         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 542                 return -EINVAL;
 543
 544         if (!driver->probe)
 545                 return -EINVAL;
 546
 547         driver_list = g_slist_insert_sorted(driver_list, driver,
 548                                                         compare_priority);
 549
 550         if (started == FALSE)
 551                 return 0;
 552
 553         if (element_root != NULL)
 554                 g_node_traverse(element_root, G_PRE_ORDER,
 555                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 556
 557         return 0;
 558 }
 559
 560 static gboolean remove_driver(GNode *node, gpointer data)
 561 {
 562         struct connman_element *element = node->data;
 563         struct connman_driver *driver = data;
 564
 565         DBG("element %p name %s", element, element->name);
 566
 567         if (element->driver == driver) {
 568                 if (driver->remove)
 569                         driver->remove(element);
 570
 571                 element->driver = NULL;
 572         }
 573
 574         return FALSE;
 575 }
 576
 577 /**
 578  * connman_driver_unregister:
 579  * @driver: driver definition
 580  *
 581  * Remove a previously registered driver
 582  */
 583 void connman_driver_unregister(struct connman_driver *driver)
 584 {
 585         DBG("driver %p name %s", driver, driver->name);
 586
 587         driver_list = g_slist_remove(driver_list, driver);
 588
 589         if (element_root != NULL)
 590                 g_node_traverse(element_root, G_POST_ORDER,
 591                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 592 }
 593
 594 static void unregister_property(gpointer data)
 595 {
 596         struct connman_property *property = data;
 597
 598         DBG("property %p", property);
 599
 600         g_free(property->value);
 601         g_free(property);
 602 }
 603
 604 void __connman_element_initialize(struct connman_element *element)
 605 {
 606         DBG("element %p", element);
 607
 608         element->refcount = 1;
 609
 610         element->name    = NULL;
 611         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 612         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 613         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 614         element->index   = -1;
 615         element->enabled = FALSE;
 616
 617         element->configuring = FALSE;
 618
 619         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 620                                                 g_free, unregister_property);
 621 }
 622
 623 /**
 624  * connman_element_create:
 625  * @name: element name
 626  *
 627  * Allocate a new element and assign the given #name to it. If the name
 628  * is #NULL, it will be later on created based on the element type.
 629  *
 630  * Returns: a newly-allocated #connman_element structure
 631  */
 632 struct connman_element *connman_element_create(const char *name)
 633 {
 634         struct connman_element *element;
 635
 636         element = g_try_new0(struct connman_element, 1);
 637         if (element == NULL)
 638                 return NULL;
 639
 640         DBG("element %p", element);
 641
 642         __connman_element_initialize(element);
 643
 644         return element;
 645 }
 646
 647 struct connman_element *connman_element_ref(struct connman_element *element)
 648 {
 649         DBG("element %p name %s refcount %d", element, element->name,
 650                                 g_atomic_int_get(&element->refcount) + 1);
 651
 652         g_atomic_int_inc(&element->refcount);
 653
 654         return element;
 655 }
 656
 657 static void free_properties(struct connman_element *element)
 658 {
 659         DBG("element %p name %s", element, element->name);
 660
 661         g_hash_table_destroy(element->properties);
 662         element->properties = NULL;
 663 }
 664
 665 void connman_element_unref(struct connman_element *element)
 666 {
 667         DBG("element %p name %s refcount %d", element, element->name,
 668                                 g_atomic_int_get(&element->refcount) - 1);
 669
 670         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 671                 if (element->destruct)
 672                         element->destruct(element);
 673                 free_properties(element);
 674                 g_free(element->ipv4.address);
 675                 g_free(element->ipv4.netmask);
 676                 g_free(element->ipv4.gateway);
 677                 g_free(element->ipv4.network);
 678                 g_free(element->ipv4.broadcast);
 679                 g_free(element->ipv4.nameserver);
 680                 g_free(element->ipv4.timeserver);
 681                 g_free(element->ipv4.pac);
 682                 g_free(element->devname);
 683                 g_free(element->path);
 684                 g_free(element->name);
 685                 g_free(element);
 686         }
 687 }
 688
 689 static int set_static_property(struct connman_element *element,
 690                                 const char *name, int type, const void *value)
 691 {
 692         struct connman_property *property;
 693
 694         DBG("element %p name %s", element, element->name);
 695
 696         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 697                 return -EINVAL;
 698
 699         property = g_try_new0(struct connman_property, 1);
 700         if (property == NULL)
 701                 return -ENOMEM;
 702
 703         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 704         property->type = type;
 705
 706         DBG("name %s type %d value %p", name, type, value);
 707
 708         switch (type) {
 709         case DBUS_TYPE_STRING:
 710                 property->value = g_strdup(*((const char **) value));
 711                 break;
 712         case DBUS_TYPE_BOOLEAN:
 713         case DBUS_TYPE_BYTE:
 714                 property->value = g_try_malloc(1);
 715                 if (property->value != NULL)
 716                         memcpy(property->value, value, 1);
 717                 break;
 718         }
 719
 720         g_hash_table_replace(element->properties, g_strdup(name), property);
 721
 722         return 0;
 723 }
 724
 725 static int set_static_array_property(struct connman_element *element,
 726                         const char *name, int type, const void *value, int len)
 727 {
 728         struct connman_property *property;
 729
 730         DBG("element %p name %s", element, element->name);
 731
 732         if (type != DBUS_TYPE_BYTE)
 733                 return -EINVAL;
 734
 735         property = g_try_new0(struct connman_property, 1);
 736         if (property == NULL)
 737                 return -ENOMEM;
 738
 739         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 740         property->type    = DBUS_TYPE_ARRAY;
 741         property->subtype = type;
 742
 743         DBG("name %s type %d value %p", name, type, value);
 744
 745         switch (type) {
 746         case DBUS_TYPE_BYTE:
 747                 property->value = g_try_malloc(len);
 748                 if (property->value != NULL) {
 749                         memcpy(property->value,
 750                                 *((const unsigned char **) value), len);
 751                         property->size = len;
 752                 }
 753                 break;
 754         }
 755
 756         g_hash_table_replace(element->properties, g_strdup(name), property);
 757
 758         return 0;
 759 }
 760
 761 int connman_element_get_value(struct connman_element *element,
 762                                 enum connman_property_id id, void *value)
 763 {
 764         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 765                 return -EINVAL;
 766
 767         switch (id) {
 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         default:
 817                 return -EINVAL;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static gboolean get_static_property(struct connman_element *element,
 824                                                 const char *name, void *value)
 825 {
 826         struct connman_property *property;
 827         gboolean found = FALSE;
 828
 829         DBG("element %p name %s", element, element->name);
 830
 831         property = g_hash_table_lookup(element->properties, name);
 832         if (property != NULL) {
 833                 switch (property->type) {
 834                 case DBUS_TYPE_STRING:
 835                         *((char **) value) = property->value;
 836                         found = TRUE;
 837                         break;
 838                 case DBUS_TYPE_BOOLEAN:
 839                 case DBUS_TYPE_BYTE:
 840                         memcpy(value, property->value, 1);
 841                         found = TRUE;
 842                         break;
 843                 }
 844         }
 845
 846         if (found == FALSE && element->parent != NULL)
 847                 return get_static_property(element->parent, name, value);
 848
 849         return found;
 850 }
 851
 852 static gboolean get_static_array_property(struct connman_element *element,
 853                         const char *name, void *value, unsigned int *len)
 854 {
 855         struct connman_property *property;
 856         gboolean found = FALSE;
 857
 858         DBG("element %p name %s", element, element->name);
 859
 860         property = g_hash_table_lookup(element->properties, name);
 861         if (property != NULL) {
 862                 *((void **) value) = property->value;
 863                 *len = property->size;
 864                 found = TRUE;
 865         }
 866
 867         return found;
 868 }
 869
 870 /**
 871  * connman_element_set_string:
 872  * @element: element structure
 873  * @key: unique identifier
 874  * @value: string value
 875  *
 876  * Set string value for specific key
 877  */
 878 int connman_element_set_string(struct connman_element *element,
 879                                         const char *key, const char *value)
 880 {
 881         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 882 }
 883
 884 /**
 885  * connman_element_get_string:
 886  * @element: element structure
 887  * @key: unique identifier
 888  *
 889  * Get string value for specific key
 890  */
 891 const char *connman_element_get_string(struct connman_element *element,
 892                                                         const char *key)
 893 {
 894         const char *value;
 895
 896         if (get_static_property(element, key, &value) == FALSE)
 897                 return NULL;
 898
 899         return value;
 900 }
 901
 902 /**
 903  * connman_element_set_bool:
 904  * @element: element structure
 905  * @key: unique identifier
 906  * @value: boolean value
 907  *
 908  * Set boolean value for specific key
 909  */
 910 int connman_element_set_bool(struct connman_element *element,
 911                                         const char *key, connman_bool_t value)
 912 {
 913         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
 914 }
 915
 916 /**
 917  * connman_element_get_bool:
 918  * @element: element structure
 919  * @key: unique identifier
 920  *
 921  * Get boolean value for specific key
 922  */
 923 connman_bool_t connman_element_get_bool(struct connman_element *element,
 924                                                         const char *key)
 925 {
 926         connman_bool_t value;
 927
 928         if (get_static_property(element, key, &value) == FALSE)
 929                 return FALSE;
 930
 931         return value;
 932 }
 933
 934 /**
 935  * connman_element_set_uint8:
 936  * @element: element structure
 937  * @key: unique identifier
 938  * @value: integer value
 939  *
 940  * Set integer value for specific key
 941  */
 942 int connman_element_set_uint8(struct connman_element *element,
 943                                         const char *key, connman_uint8_t value)
 944 {
 945         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 946 }
 947
 948 /**
 949  * connman_element_get_uint8:
 950  * @element: element structure
 951  * @key: unique identifier
 952  *
 953  * Get integer value for specific key
 954  */
 955 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 956                                                         const char *key)
 957 {
 958         connman_uint8_t value;
 959
 960         if (get_static_property(element, key, &value) == FALSE)
 961                 return 0;
 962
 963         return value;
 964 }
 965
 966 /**
 967  * connman_element_set_blob:
 968  * @element: element structure
 969  * @key: unique identifier
 970  * @data: blob data
 971  * @size: blob size
 972  *
 973  * Set binary blob value for specific key
 974  */
 975 int connman_element_set_blob(struct connman_element *element,
 976                         const char *key, const void *data, unsigned int size)
 977 {
 978         return set_static_array_property(element, key,
 979                                                 DBUS_TYPE_BYTE, &data, size);
 980 }
 981
 982 /**
 983  * connman_element_get_blob:
 984  * @element: element structure
 985  * @key: unique identifier
 986  * @size: pointer to blob size
 987  *
 988  * Get binary blob value for specific key
 989  */
 990 const void *connman_element_get_blob(struct connman_element *element,
 991                                         const char *key, unsigned int *size)
 992 {
 993         void *value;
 994
 995         if (get_static_array_property(element, key, &value, size) == FALSE)
 996                 return NULL;
 997
 998         return value;
 999 }
1000
1001 static void emit_state_change(DBusConnection *conn, const char *state)
1002 {
1003         DBusMessage *signal;
1004         DBusMessageIter iter;
1005
1006         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
1007                                 CONNMAN_MANAGER_INTERFACE, "State",
1008                                                 DBUS_TYPE_STRING, &state);
1009
1010         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1011                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1012         if (signal == NULL)
1013                 return;
1014
1015         dbus_message_iter_init_append(signal, &iter);
1016         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &state);
1017
1018         g_dbus_send_message(conn, signal);
1019 }
1020
1021 static void probe_element(struct connman_element *element)
1022 {
1023         GSList *list;
1024
1025         DBG("element %p name %s", element, element->name);
1026
1027         for (list = driver_list; list; list = list->next) {
1028                 struct connman_driver *driver = list->data;
1029
1030                 if (match_driver(element, driver) == FALSE)
1031                         continue;
1032
1033                 DBG("driver %p name %s", driver, driver->name);
1034
1035                 if (driver->probe(element) == 0) {
1036                         element->driver = driver;
1037                         break;
1038                 }
1039         }
1040 }
1041
1042 static void register_element(gpointer data, gpointer user_data)
1043 {
1044         struct connman_element *element = data;
1045         const gchar *basepath;
1046         GNode *node;
1047
1048         if (element->parent) {
1049                 node = g_node_find(element_root, G_PRE_ORDER,
1050                                         G_TRAVERSE_ALL, element->parent);
1051                 basepath = element->parent->path;
1052         } else {
1053                 element->parent = element_root->data;
1054
1055                 node = element_root;
1056                 basepath = "/device";
1057         }
1058
1059         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1060
1061         if (node == NULL) {
1062                 connman_error("Element registration for %s failed",
1063                                                         element->path);
1064                 return;
1065         }
1066
1067         DBG("element %p path %s", element, element->path);
1068
1069         g_node_append_data(node, element);
1070
1071         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1072                 element->parent->configuring = TRUE;
1073
1074 #if 0
1075                 if (__connman_element_count(NULL,
1076                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1077                         emit_state_change(connection, "connecting");
1078 #endif
1079         }
1080
1081         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1082                 struct connman_element *parent = element->parent;
1083
1084                 while (parent) {
1085                         parent->configuring = FALSE;
1086                         parent = parent->parent;
1087                 }
1088
1089                 if (__connman_element_count(NULL,
1090                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1091                         emit_state_change(connection, "online");
1092         }
1093
1094         if (started == FALSE)
1095                 return;
1096
1097         probe_element(element);
1098 }
1099
1100 gboolean __connman_element_device_isfiltered(const char *devname)
1101 {
1102         if (device_filter == NULL)
1103                 goto nodevice;
1104
1105         if (g_pattern_match_simple(device_filter, devname) == FALSE) {
1106                 DBG("ignoring device %s (match)", devname);
1107                 return TRUE;
1108         }
1109
1110 nodevice:
1111         if (nodevice_filter == NULL)
1112                 return FALSE;
1113
1114         if (g_pattern_match_simple(nodevice_filter, devname) == TRUE) {
1115                 DBG("ignoring device %s (no match)", devname);
1116                 return TRUE;
1117         }
1118
1119         return FALSE;
1120 }
1121
1122 /**
1123  * connman_element_register:
1124  * @element: the element to register
1125  * @parent: the parent to register the element with
1126  *
1127  * Register an element with the core. It will be register under the given
1128  * parent of if %NULL is provided under the root element.
1129  *
1130  * Returns: %0 on success
1131  */
1132 int connman_element_register(struct connman_element *element,
1133                                         struct connman_element *parent)
1134 {
1135         DBG("element %p name %s parent %p", element, element->name, parent);
1136
1137         if (element->devname == NULL)
1138                 element->devname = g_strdup(element->name);
1139
1140         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1141                 goto setup;
1142
1143         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1144                 return -EPERM;
1145
1146 setup:
1147         if (connman_element_ref(element) == NULL)
1148                 return -EINVAL;
1149
1150         if (element->name == NULL) {
1151                 element->name = g_strdup(type2string(element->type));
1152                 if (element->name == NULL) {
1153                         return -EINVAL;
1154                 }
1155         }
1156
1157         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1158                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1159
1160         element->parent = parent;
1161
1162         register_element(element, NULL);
1163
1164         return 0;
1165 }
1166
1167 static gboolean remove_element(GNode *node, gpointer user_data)
1168 {
1169         struct connman_element *element = node->data;
1170         struct connman_element *root = user_data;
1171
1172         DBG("element %p name %s", element, element->name);
1173
1174         if (element == root)
1175                 return FALSE;
1176
1177         if (node != NULL)
1178                 g_node_unlink(node);
1179
1180         if (element->driver) {
1181                 if (element->driver->remove)
1182                         element->driver->remove(element);
1183
1184                 element->driver = NULL;
1185         }
1186
1187         if (node != NULL)
1188                 g_node_destroy(node);
1189
1190         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1191                 if (__connman_element_count(NULL,
1192                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1193                         emit_state_change(connection, "offline");
1194         }
1195
1196         connman_element_unref(element);
1197
1198         return FALSE;
1199 }
1200
1201 void connman_element_unregister(struct connman_element *element)
1202 {
1203         GNode *node;
1204
1205         DBG("element %p name %s", element, element->name);
1206
1207         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1208
1209         if (node != NULL)
1210                 g_node_traverse(node, G_POST_ORDER,
1211                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1212 }
1213
1214 void connman_element_unregister_children(struct connman_element *element)
1215 {
1216         GNode *node;
1217
1218         DBG("element %p name %s", element, element->name);
1219
1220         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1221
1222         if (node != NULL)
1223                 g_node_traverse(node, G_POST_ORDER,
1224                                 G_TRAVERSE_ALL, -1, remove_element, element);
1225 }
1226
1227 static gboolean update_element(GNode *node, gpointer user_data)
1228 {
1229         struct connman_element *element = node->data;
1230
1231         DBG("element %p name %s", element, element->name);
1232
1233         if (element->driver && element->driver->update)
1234                 element->driver->update(element);
1235
1236         return FALSE;
1237 }
1238
1239 void connman_element_update(struct connman_element *element)
1240 {
1241         GNode *node;
1242
1243         DBG("element %p name %s", element, element->name);
1244
1245         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1246
1247         if (node != NULL)
1248                 g_node_traverse(node, G_PRE_ORDER,
1249                                 G_TRAVERSE_ALL, -1, update_element, element);
1250 }
1251
1252 int connman_element_set_enabled(struct connman_element *element,
1253                                                         gboolean enabled)
1254 {
1255         if (element->enabled == enabled)
1256                 return 0;
1257
1258         element->enabled = enabled;
1259
1260         connman_element_update(element);
1261
1262         return 0;
1263 }
1264
1265 static enum connman_service_error convert_error(enum connman_element_error error)
1266 {
1267         switch (error) {
1268         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1269         case CONNMAN_ELEMENT_ERROR_FAILED:
1270                 break;
1271         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1272                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1273         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1274                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1275         }
1276
1277         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1278 }
1279
1280 /**
1281  * connman_element_set_error:
1282  * @element: element structure
1283  * @error: error identifier
1284  *
1285  * Set error state and specific error identifier
1286  */
1287 void connman_element_set_error(struct connman_element *element,
1288                                         enum connman_element_error error)
1289 {
1290         struct connman_service *service;
1291
1292         DBG("element %p error %d", element, error);
1293
1294         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1295                 return;
1296
1297         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1298         element->error = error;
1299
1300         if (element->driver && element->driver->change)
1301                 element->driver->change(element);
1302
1303         service = __connman_element_get_service(element);
1304         __connman_service_indicate_error(service, convert_error(error));
1305 }
1306
1307 int __connman_element_init(const char *device, const char *nodevice)
1308 {
1309         struct connman_element *element;
1310
1311         DBG("");
1312
1313         connection = connman_dbus_get_connection();
1314         if (connection == NULL)
1315                 return -EIO;
1316
1317         device_filter = g_strdup(device);
1318         nodevice_filter = g_strdup(nodevice);
1319
1320         element = connman_element_create("root");
1321
1322         element->path = g_strdup("/");
1323         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1324
1325         element_root = g_node_new(element);
1326
1327         __connman_technology_init();
1328         __connman_notifier_init();
1329         __connman_service_init();
1330         __connman_provider_init();
1331         __connman_network_init();
1332         __connman_device_init();
1333
1334         return 0;
1335 }
1336
1337 static gboolean probe_node(GNode *node, gpointer data)
1338 {
1339         struct connman_element *element = node->data;
1340
1341         DBG("element %p name %s", element, element->name);
1342
1343         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1344                 return FALSE;
1345
1346         if (element->driver)
1347                 return FALSE;
1348
1349         probe_element(element);
1350
1351         return FALSE;
1352 }
1353
1354 void __connman_element_start(void)
1355 {
1356         DBG("");
1357
1358         __connman_storage_init_profile();
1359
1360         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1361                                                         probe_node, NULL);
1362
1363         started = TRUE;
1364
1365         __connman_rtnl_start();
1366         __connman_udev_start();
1367
1368         __connman_connection_init();
1369         __connman_ipv4_init();
1370         __connman_dhcp_init();
1371
1372         if (__connman_rfkill_init() < 0)
1373                 __connman_udev_enable_rfkill_processing();
1374 }
1375
1376 void __connman_element_stop(void)
1377 {
1378         DBG("");
1379
1380         __connman_rfkill_cleanup();
1381
1382         __connman_dhcp_cleanup();
1383         __connman_ipv4_cleanup();
1384         __connman_provider_cleanup();
1385         __connman_connection_cleanup();
1386 }
1387
1388 static gboolean free_driver(GNode *node, gpointer data)
1389 {
1390         struct connman_element *element = node->data;
1391
1392         DBG("element %p name %s", element, element->name);
1393
1394         if (element->driver) {
1395                 if (element->driver->remove)
1396                         element->driver->remove(element);
1397
1398                 element->driver = NULL;
1399         }
1400
1401         return FALSE;
1402 }
1403
1404 static gboolean free_node(GNode *node, gpointer data)
1405 {
1406         struct connman_element *element = node->data;
1407
1408         DBG("element %p name %s", element, element->name);
1409
1410         if (g_node_depth(node) > 1)
1411                 connman_element_unregister(element);
1412
1413         return FALSE;
1414 }
1415
1416 void __connman_element_cleanup(void)
1417 {
1418         DBG("");
1419
1420         __connman_device_cleanup();
1421         __connman_network_cleanup();
1422         __connman_service_cleanup();
1423         __connman_notifier_cleanup();
1424         __connman_technology_cleanup();
1425
1426         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1427                                                         free_driver, NULL);
1428
1429         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1430                                                         free_node, NULL);
1431
1432         g_node_destroy(element_root);
1433         element_root = NULL;
1434
1435         g_free(nodevice_filter);
1436         g_free(device_filter);
1437
1438         if (connection == NULL)
1439                 return;
1440
1441         dbus_connection_unref(connection);
1442 }