vcs.maemo.org Git - connman/blob - src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36
  37 static GNode *element_root = NULL;
  38 static GSList *driver_list = NULL;
  39 static gchar *device_filter = NULL;
  40
  41 static gboolean started = FALSE;
  42
  43 static struct {
  44         enum connman_property_id id;
  45         int type;
  46         const char *name;
  47         const void *value;
  48 } propid_table[] = {
  49         { CONNMAN_PROPERTY_ID_IPV4_METHOD,
  50                 DBUS_TYPE_STRING, "IPv4.Method", "dhcp" },
  51         { CONNMAN_PROPERTY_ID_IPV4_ADDRESS,
  52                 DBUS_TYPE_STRING, "IPv4.Address" },
  53         { CONNMAN_PROPERTY_ID_IPV4_NETMASK,
  54                 DBUS_TYPE_STRING, "IPv4.Netmask" },
  55         { CONNMAN_PROPERTY_ID_IPV4_GATEWAY,
  56                 DBUS_TYPE_STRING, "IPv4.Gateway" },
  57         { CONNMAN_PROPERTY_ID_IPV4_BROADCAST,
  58                 DBUS_TYPE_STRING, "IPv4.Broadcast" },
  59         { CONNMAN_PROPERTY_ID_IPV4_NAMESERVER,
  60                 DBUS_TYPE_STRING, "IPv4.Nameserver" },
  61         { }
  62 };
  63
  64 static int propid2type(enum connman_property_id id)
  65 {
  66         int i;
  67
  68         for (i = 0; propid_table[i].name; i++) {
  69                 if (propid_table[i].id == id)
  70                         return propid_table[i].type;
  71         }
  72
  73         return DBUS_TYPE_INVALID;
  74 }
  75
  76 static const char *propid2name(enum connman_property_id id)
  77 {
  78         int i;
  79
  80         for (i = 0; propid_table[i].name; i++) {
  81                 if (propid_table[i].id == id)
  82                         return propid_table[i].name;
  83         }
  84
  85         return NULL;
  86 }
  87
  88 static const char *type2string(enum connman_element_type type)
  89 {
  90         switch (type) {
  91         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  92                 return "unknown";
  93         case CONNMAN_ELEMENT_TYPE_ROOT:
  94                 return "root";
  95         case CONNMAN_ELEMENT_TYPE_PROFILE:
  96                 return "profile";
  97         case CONNMAN_ELEMENT_TYPE_DEVICE:
  98                 return "device";
  99         case CONNMAN_ELEMENT_TYPE_NETWORK:
 100                 return "network";
 101         case CONNMAN_ELEMENT_TYPE_SERVICE:
 102                 return "service";
 103         case CONNMAN_ELEMENT_TYPE_PPP:
 104                 return "ppp";
 105         case CONNMAN_ELEMENT_TYPE_IPV4:
 106                 return "ipv4";
 107         case CONNMAN_ELEMENT_TYPE_IPV6:
 108                 return "ipv6";
 109         case CONNMAN_ELEMENT_TYPE_DHCP:
 110                 return "dhcp";
 111         case CONNMAN_ELEMENT_TYPE_BOOTP:
 112                 return "bootp";
 113         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 114                 return "zeroconf";
 115         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 116                 return "connection";
 117         case CONNMAN_ELEMENT_TYPE_VENDOR:
 118                 return "vendor";
 119         }
 120
 121         return NULL;
 122 }
 123
 124 const char *__connman_ipv4_method2string(enum connman_ipv4_method method)
 125 {
 126         switch (method) {
 127         case CONNMAN_IPV4_METHOD_UNKNOWN:
 128                 return "unknown";
 129         case CONNMAN_IPV4_METHOD_OFF:
 130                 return "off";
 131         case CONNMAN_IPV4_METHOD_STATIC:
 132                 return "static";
 133         case CONNMAN_IPV4_METHOD_DHCP:
 134                 return "dhcp";
 135         }
 136
 137         return "unknown";
 138 }
 139
 140 enum connman_ipv4_method __connman_ipv4_string2method(const char *method)
 141 {
 142         if (strcasecmp(method, "off") == 0)
 143                 return CONNMAN_IPV4_METHOD_OFF;
 144         else if (strcasecmp(method, "static") == 0)
 145                 return CONNMAN_IPV4_METHOD_STATIC;
 146         else if (strcasecmp(method, "dhcp") == 0)
 147                 return CONNMAN_IPV4_METHOD_DHCP;
 148         else
 149                 return CONNMAN_IPV4_METHOD_UNKNOWN;
 150 }
 151
 152 #if 0
 153 static void append_property(DBusMessageIter *dict,
 154                                 struct connman_property *property)
 155 {
 156         if (property->value == NULL)
 157                 return;
 158
 159         switch (property->type) {
 160         case DBUS_TYPE_ARRAY:
 161                 connman_dbus_dict_append_array(dict, property->name,
 162                         property->subtype, &property->value, property->size);
 163                 break;
 164         case DBUS_TYPE_STRING:
 165                 connman_dbus_dict_append_variant(dict, property->name,
 166                                         property->type, &property->value);
 167                 break;
 168         default:
 169                 connman_dbus_dict_append_variant(dict, property->name,
 170                                         property->type, property->value);
 171                 break;
 172         }
 173 }
 174
 175 static void add_common_properties(struct connman_element *element,
 176                                                 DBusMessageIter *dict)
 177 {
 178         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 179         GSList *list;
 180
 181         connman_element_get_value(element,
 182                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 183         connman_element_get_value(element,
 184                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 185         connman_element_get_value(element,
 186                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 187
 188         if (element->priority > 0)
 189                 connman_dbus_dict_append_variant(dict, "Priority",
 190                                         DBUS_TYPE_UINT16, &element->priority);
 191
 192         if (address != NULL)
 193                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 194                                                 DBUS_TYPE_STRING, &address);
 195         if (netmask != NULL)
 196                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 197                                                 DBUS_TYPE_STRING, &netmask);
 198         if (gateway != NULL)
 199                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 200                                                 DBUS_TYPE_STRING, &gateway);
 201
 202         if (element->wifi.security != NULL) {
 203                 const char *passphrase = "";
 204
 205                 connman_dbus_dict_append_variant(dict, "WiFi.Security",
 206                                 DBUS_TYPE_STRING, &element->wifi.security);
 207
 208                 if (element->wifi.passphrase != NULL)
 209                         passphrase = element->wifi.passphrase;
 210
 211                 connman_dbus_dict_append_variant(dict, "WiFi.Passphrase",
 212                                 DBUS_TYPE_STRING, &passphrase);
 213         }
 214
 215         __connman_element_lock(element);
 216
 217         for (list = element->properties; list; list = list->next) {
 218                 struct connman_property *property = list->data;
 219
 220                 append_property(dict, property);
 221         }
 222
 223         __connman_element_unlock(element);
 224 }
 225
 226 static void set_common_property(struct connman_element *element,
 227                                 const char *name, DBusMessageIter *value)
 228 {
 229         GSList *list;
 230
 231         if (g_str_equal(name, "Priority") == TRUE) {
 232                 dbus_message_iter_get_basic(value, &element->priority);
 233                 return;
 234         }
 235
 236         __connman_element_lock(element);
 237
 238         for (list = element->properties; list; list = list->next) {
 239                 struct connman_property *property = list->data;
 240                 const char *str;
 241
 242                 if (g_str_equal(property->name, name) == FALSE)
 243                         continue;
 244
 245                 if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)
 246                         continue;
 247
 248                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 249
 250                 if (property->type == DBUS_TYPE_STRING) {
 251                         dbus_message_iter_get_basic(value, &str);
 252                         g_free(property->value);
 253                         property->value = g_strdup(str);
 254                 } else
 255                         property->value = NULL;
 256         }
 257
 258         __connman_element_unlock(element);
 259 }
 260 #endif
 261
 262 static void emit_element_signal(DBusConnection *conn, const char *member,
 263                                         struct connman_element *element)
 264 {
 265         DBusMessage *signal;
 266
 267         if (__connman_debug_enabled() == FALSE)
 268                 return;
 269
 270         DBG("conn %p member %s", conn, member);
 271
 272         if (element == NULL)
 273                 return;
 274
 275         signal = dbus_message_new_signal(element->path,
 276                                         CONNMAN_DEBUG_INTERFACE, member);
 277         if (signal == NULL)
 278                 return;
 279
 280         g_dbus_send_message(conn, signal);
 281 }
 282
 283 struct foreach_data {
 284         enum connman_element_type type;
 285         element_cb_t callback;
 286         gpointer user_data;
 287 };
 288
 289 static gboolean foreach_callback(GNode *node, gpointer user_data)
 290 {
 291         struct connman_element *element = node->data;
 292         struct foreach_data *data = user_data;
 293
 294         DBG("element %p name %s", element, element->name);
 295
 296         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 297                 return FALSE;
 298
 299         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 300                                         data->type != element->type)
 301                 return FALSE;
 302
 303         if (data->callback)
 304                 data->callback(element, data->user_data);
 305
 306         return FALSE;
 307 }
 308
 309 void __connman_element_foreach(struct connman_element *element,
 310                                 enum connman_element_type type,
 311                                 element_cb_t callback, gpointer user_data)
 312 {
 313         struct foreach_data data = { type, callback, user_data };
 314         GNode *node;
 315
 316         DBG("");
 317
 318         if (element != NULL) {
 319                 node = g_node_find(element_root, G_PRE_ORDER,
 320                                                 G_TRAVERSE_ALL, element);
 321                 if (node == NULL)
 322                         return;
 323         } else
 324                 node = element_root;
 325
 326         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 327                                                 foreach_callback, &data);
 328 }
 329
 330 struct append_filter {
 331         enum connman_element_type type;
 332         DBusMessageIter *iter;
 333 };
 334
 335 static gboolean append_path(GNode *node, gpointer user_data)
 336 {
 337         struct connman_element *element = node->data;
 338         struct append_filter *filter = user_data;
 339
 340         DBG("element %p name %s", element, element->name);
 341
 342         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 343                 return FALSE;
 344
 345         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 346                                         filter->type != element->type)
 347                 return FALSE;
 348
 349         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 350                         __connman_device_has_driver(element->device) == FALSE)
 351                 return FALSE;
 352
 353         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 354                         __connman_network_has_driver(element->network) == FALSE)
 355                 return FALSE;
 356
 357         dbus_message_iter_append_basic(filter->iter,
 358                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 359
 360         return FALSE;
 361 }
 362
 363 void __connman_element_list(struct connman_element *element,
 364                                         enum connman_element_type type,
 365                                                         DBusMessageIter *iter)
 366 {
 367         struct append_filter filter = { type, iter };
 368         GNode *node;
 369
 370         DBG("");
 371
 372         if (element != NULL) {
 373                 node = g_node_find(element_root, G_PRE_ORDER,
 374                                                 G_TRAVERSE_ALL, element);
 375                 if (node == NULL)
 376                         return;
 377         } else
 378                 node = element_root;
 379
 380         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 381                                                 append_path, &filter);
 382 }
 383
 384 struct count_data {
 385         enum connman_element_type type;
 386         int count;
 387 };
 388
 389 static gboolean count_element(GNode *node, gpointer user_data)
 390 {
 391         struct connman_element *element = node->data;
 392         struct count_data *data = user_data;
 393
 394         DBG("element %p name %s", element, element->name);
 395
 396         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 397                 return FALSE;
 398
 399         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 400                                         data->type != element->type)
 401                 return FALSE;
 402
 403         data->count++;
 404
 405         return FALSE;
 406 }
 407
 408 int __connman_element_count(struct connman_element *element,
 409                                         enum connman_element_type type)
 410 {
 411         struct count_data data = { type, 0 };
 412         GNode *node;
 413
 414         DBG("");
 415
 416         if (element != NULL) {
 417                 node = g_node_find(element_root, G_PRE_ORDER,
 418                                                 G_TRAVERSE_ALL, element);
 419                 if (node == NULL)
 420                         return 0;
 421         } else
 422                 node = element_root;
 423
 424         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 425                                                 count_element, &data);
 426
 427         return data.count;
 428 }
 429
 430 static gint compare_priority(gconstpointer a, gconstpointer b)
 431 {
 432         const struct connman_driver *driver1 = a;
 433         const struct connman_driver *driver2 = b;
 434
 435         return driver2->priority - driver1->priority;
 436 }
 437
 438 static gboolean match_driver(struct connman_element *element,
 439                                         struct connman_driver *driver)
 440 {
 441         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 442                 return FALSE;
 443
 444         if (element->type == driver->type ||
 445                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 446                 return TRUE;
 447
 448         return FALSE;
 449 }
 450
 451 static gboolean probe_driver(GNode *node, gpointer data)
 452 {
 453         struct connman_element *element = node->data;
 454         struct connman_driver *driver = data;
 455
 456         DBG("element %p name %s", element, element->name);
 457
 458         if (!element->driver && match_driver(element, driver) == TRUE) {
 459                 if (driver->probe(element) < 0)
 460                         return FALSE;
 461
 462                 __connman_element_lock(element);
 463                 element->driver = driver;
 464                 __connman_element_unlock(element);
 465         }
 466
 467         return FALSE;
 468 }
 469
 470 void __connman_driver_rescan(struct connman_driver *driver)
 471 {
 472         DBG("driver %p name %s", driver, driver->name);
 473
 474         if (!driver->probe)
 475                 return;
 476
 477         if (element_root != NULL)
 478                 g_node_traverse(element_root, G_PRE_ORDER,
 479                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 480 }
 481
 482 /**
 483  * connman_driver_register:
 484  * @driver: driver definition
 485  *
 486  * Register a new driver
 487  *
 488  * Returns: %0 on success
 489  */
 490 int connman_driver_register(struct connman_driver *driver)
 491 {
 492         DBG("driver %p name %s", driver, driver->name);
 493
 494         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 495                 return -EINVAL;
 496
 497         if (!driver->probe)
 498                 return -EINVAL;
 499
 500         driver_list = g_slist_insert_sorted(driver_list, driver,
 501                                                         compare_priority);
 502
 503         if (started == FALSE)
 504                 return 0;
 505
 506         if (element_root != NULL)
 507                 g_node_traverse(element_root, G_PRE_ORDER,
 508                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 509
 510         return 0;
 511 }
 512
 513 static gboolean remove_driver(GNode *node, gpointer data)
 514 {
 515         struct connman_element *element = node->data;
 516         struct connman_driver *driver = data;
 517
 518         DBG("element %p name %s", element, element->name);
 519
 520         if (element->driver == driver) {
 521                 if (driver->remove)
 522                         driver->remove(element);
 523
 524                 __connman_element_lock(element);
 525                 element->driver = NULL;
 526                 __connman_element_unlock(element);
 527         }
 528
 529         return FALSE;
 530 }
 531
 532 /**
 533  * connman_driver_unregister:
 534  * @driver: driver definition
 535  *
 536  * Remove a previously registered driver
 537  */
 538 void connman_driver_unregister(struct connman_driver *driver)
 539 {
 540         DBG("driver %p name %s", driver, driver->name);
 541
 542         driver_list = g_slist_remove(driver_list, driver);
 543
 544         if (element_root != NULL)
 545                 g_node_traverse(element_root, G_POST_ORDER,
 546                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 547 }
 548
 549 /**
 550  * connman_element_create:
 551  * @name: element name
 552  *
 553  * Allocate a new element and assign the given #name to it. If the name
 554  * is #NULL, it will be later on created based on the element type.
 555  *
 556  * Returns: a newly-allocated #connman_element structure
 557  */
 558 struct connman_element *connman_element_create(const char *name)
 559 {
 560         struct connman_element *element;
 561
 562         element = g_try_new0(struct connman_element, 1);
 563         if (element == NULL)
 564                 return NULL;
 565
 566         DBG("element %p", element);
 567
 568         element->refcount = 1;
 569
 570         element->name    = g_strdup(name);
 571         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 572         element->index   = -1;
 573         element->enabled = FALSE;
 574
 575         return element;
 576 }
 577
 578 struct connman_element *connman_element_ref(struct connman_element *element)
 579 {
 580         DBG("element %p name %s refcount %d", element, element->name,
 581                                 g_atomic_int_get(&element->refcount) + 1);
 582
 583         g_atomic_int_inc(&element->refcount);
 584
 585         return element;
 586 }
 587
 588 static void free_properties(struct connman_element *element)
 589 {
 590         GSList *list;
 591
 592         DBG("element %p name %s", element, element->name);
 593
 594         __connman_element_lock(element);
 595
 596         for (list = element->properties; list; list = list->next) {
 597                 struct connman_property *property = list->data;
 598
 599                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 600                         g_free(property->value);
 601
 602                 g_free(property->name);
 603                 g_free(property);
 604         }
 605
 606         g_slist_free(element->properties);
 607
 608         element->properties = NULL;
 609
 610         __connman_element_unlock(element);
 611 }
 612
 613 void connman_element_unref(struct connman_element *element)
 614 {
 615         DBG("element %p name %s refcount %d", element, element->name,
 616                                 g_atomic_int_get(&element->refcount) - 1);
 617
 618         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 619                 if (element->destruct)
 620                         element->destruct(element);
 621                 free_properties(element);
 622                 g_free(element->ipv4.address);
 623                 g_free(element->ipv4.netmask);
 624                 g_free(element->ipv4.gateway);
 625                 g_free(element->ipv4.network);
 626                 g_free(element->ipv4.broadcast);
 627                 g_free(element->ipv4.nameserver);
 628                 g_free(element->devname);
 629                 g_free(element->path);
 630                 g_free(element->name);
 631                 g_free(element);
 632         }
 633 }
 634
 635 int connman_element_add_static_property(struct connman_element *element,
 636                                 const char *name, int type, const void *value)
 637 {
 638         struct connman_property *property;
 639
 640         DBG("element %p name %s", element, element->name);
 641
 642         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 643                 return -EINVAL;
 644
 645         property = g_try_new0(struct connman_property, 1);
 646         if (property == NULL)
 647                 return -ENOMEM;
 648
 649         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 650         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 651         property->name  = g_strdup(name);
 652         property->type  = type;
 653
 654         DBG("name %s type %d value %p", name, type, value);
 655
 656         switch (type) {
 657         case DBUS_TYPE_STRING:
 658                 property->value = g_strdup(*((const char **) value));
 659                 break;
 660         case DBUS_TYPE_BYTE:
 661                 property->value = g_try_malloc(1);
 662                 if (property->value != NULL)
 663                         memcpy(property->value, value, 1);
 664                 break;
 665         }
 666
 667         __connman_element_lock(element);
 668         element->properties = g_slist_append(element->properties, property);
 669         __connman_element_unlock(element);
 670
 671         return 0;
 672 }
 673
 674 int connman_element_set_static_property(struct connman_element *element,
 675                                 const char *name, int type, const void *value)
 676 {
 677         GSList *list;
 678
 679         DBG("element %p name %s", element, element->name);
 680
 681         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 682                 return -EINVAL;
 683
 684         __connman_element_lock(element);
 685
 686         for (list = element->properties; list; list = list->next) {
 687                 struct connman_property *property = list->data;
 688
 689                 if (g_str_equal(property->name, name) == FALSE)
 690                         continue;
 691
 692                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
 693                         continue;
 694
 695                 property->type = type;
 696                 g_free(property->value);
 697
 698                 switch (type) {
 699                 case DBUS_TYPE_STRING:
 700                         property->value = g_strdup(*((const char **) value));
 701                         break;
 702                 case DBUS_TYPE_BYTE:
 703                         property->value = g_try_malloc(1);
 704                         if (property->value != NULL)
 705                                 memcpy(property->value, value, 1);
 706                         break;
 707                 }
 708         }
 709
 710         __connman_element_unlock(element);
 711
 712         return 0;
 713 }
 714
 715 int connman_element_add_static_array_property(struct connman_element *element,
 716                         const char *name, int type, const void *value, int len)
 717 {
 718         struct connman_property *property;
 719
 720         DBG("element %p name %s", element, element->name);
 721
 722         if (type != DBUS_TYPE_BYTE)
 723                 return -EINVAL;
 724
 725         property = g_try_new0(struct connman_property, 1);
 726         if (property == NULL)
 727                 return -ENOMEM;
 728
 729         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
 730         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 731         property->name    = g_strdup(name);
 732         property->type    = DBUS_TYPE_ARRAY;
 733         property->subtype = type;
 734
 735         DBG("name %s type %d value %p", name, type, value);
 736
 737         switch (type) {
 738         case DBUS_TYPE_BYTE:
 739                 property->value = g_try_malloc(len);
 740                 if (property->value != NULL) {
 741                         memcpy(property->value,
 742                                 *((const unsigned char **) value), len);
 743                         property->size = len;
 744                 }
 745                 break;
 746         }
 747
 748         __connman_element_lock(element);
 749         element->properties = g_slist_append(element->properties, property);
 750         __connman_element_unlock(element);
 751
 752         return 0;
 753 }
 754
 755 static void *get_reference_value(struct connman_element *element,
 756                                                 enum connman_property_id id)
 757 {
 758         GSList *list;
 759
 760         DBG("element %p name %s", element, element->name);
 761
 762         for (list = element->properties; list; list = list->next) {
 763                 struct connman_property *property = list->data;
 764
 765                 if (property->id != id)
 766                         continue;
 767
 768                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 769                         return property->value;
 770         }
 771
 772         if (element->parent == NULL)
 773                 return NULL;
 774
 775         return get_reference_value(element->parent, id);
 776 }
 777
 778 static void set_reference_properties(struct connman_element *element)
 779 {
 780         GSList *list;
 781
 782         DBG("element %p name %s", element, element->name);
 783
 784         for (list = element->properties; list; list = list->next) {
 785                 struct connman_property *property = list->data;
 786
 787                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 788                         continue;
 789
 790                 property->value = get_reference_value(element->parent,
 791                                                                 property->id);
 792         }
 793 }
 794
 795 static struct connman_property *create_property(struct connman_element *element,
 796                                                 enum connman_property_id id)
 797 {
 798         struct connman_property *property;
 799         GSList *list;
 800
 801         DBG("element %p name %s", element, element->name);
 802
 803         __connman_element_lock(element);
 804
 805         for (list = element->properties; list; list = list->next) {
 806                 property = list->data;
 807
 808                 if (property->id == id)
 809                         goto unlock;
 810         }
 811
 812         property = g_try_new0(struct connman_property, 1);
 813         if (property == NULL)
 814                 goto unlock;
 815
 816         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
 817         property->id    = id;
 818         property->name  = g_strdup(propid2name(id));
 819         property->type  = propid2type(id);
 820
 821         if (property->name == NULL) {
 822                 g_free(property);
 823                 property = NULL;
 824                 goto unlock;
 825         }
 826
 827         element->properties = g_slist_append(element->properties, property);
 828
 829 unlock:
 830         __connman_element_unlock(element);
 831
 832         return property;
 833 }
 834
 835 static void create_default_properties(struct connman_element *element)
 836 {
 837         struct connman_property *property;
 838         int i;
 839
 840         DBG("element %p name %s", element, element->name);
 841
 842         for (i = 0; propid_table[i].name; i++) {
 843                 DBG("property %s", propid_table[i].name);
 844
 845                 property = create_property(element, propid_table[i].id);
 846
 847                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 848
 849                 if (propid_table[i].type != DBUS_TYPE_STRING)
 850                         continue;
 851
 852                 if (propid_table[i].value)
 853                         property->value = g_strdup(propid_table[i].value);
 854                 else
 855                         property->value = g_strdup("");
 856         }
 857 }
 858
 859 static int define_properties_valist(struct connman_element *element,
 860                                                                 va_list args)
 861 {
 862         enum connman_property_id id;
 863
 864         DBG("element %p name %s", element, element->name);
 865
 866         id = va_arg(args, enum connman_property_id);
 867
 868         while (id != CONNMAN_PROPERTY_ID_INVALID) {
 869
 870                 DBG("property %d", id);
 871
 872                 create_property(element, id);
 873
 874                 id = va_arg(args, enum connman_property_id);
 875         }
 876
 877         return 0;
 878 }
 879
 880 /**
 881  * connman_element_define_properties:
 882  * @element: an element
 883  * @varargs: list of property identifiers
 884  *
 885  * Define the valid properties for an element.
 886  *
 887  * Returns: %0 on success
 888  */
 889 int connman_element_define_properties(struct connman_element *element, ...)
 890 {
 891         va_list args;
 892         int err;
 893
 894         DBG("element %p name %s", element, element->name);
 895
 896         va_start(args, element);
 897
 898         err = define_properties_valist(element, args);
 899
 900         va_end(args);
 901
 902         return err;
 903 }
 904
 905 int connman_element_create_property(struct connman_element *element,
 906                                                 const char *name, int type)
 907 {
 908         return -EIO;
 909 }
 910
 911 int connman_element_set_property(struct connman_element *element,
 912                                 enum connman_property_id id, const void *value)
 913 {
 914         switch (id) {
 915         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 916                 __connman_element_lock(element);
 917                 g_free(element->ipv4.address);
 918                 element->ipv4.address = g_strdup(*((const char **) value));
 919                 __connman_element_unlock(element);
 920                 break;
 921         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 922                 __connman_element_lock(element);
 923                 g_free(element->ipv4.netmask);
 924                 element->ipv4.netmask = g_strdup(*((const char **) value));
 925                 __connman_element_unlock(element);
 926                 break;
 927         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 928                 __connman_element_lock(element);
 929                 g_free(element->ipv4.gateway);
 930                 element->ipv4.gateway = g_strdup(*((const char **) value));
 931                 __connman_element_unlock(element);
 932                 break;
 933         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 934                 __connman_element_lock(element);
 935                 g_free(element->ipv4.broadcast);
 936                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 937                 __connman_element_unlock(element);
 938                 break;
 939         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 940                 __connman_element_lock(element);
 941                 g_free(element->ipv4.nameserver);
 942                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 943                 __connman_element_unlock(element);
 944                 break;
 945         default:
 946                 return -EINVAL;
 947         }
 948
 949         return 0;
 950 }
 951
 952 int connman_element_get_value(struct connman_element *element,
 953                                 enum connman_property_id id, void *value)
 954 {
 955         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 956                 return -EINVAL;
 957
 958         switch (id) {
 959         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 960                 if (element->ipv4.method == CONNMAN_IPV4_METHOD_UNKNOWN)
 961                         return connman_element_get_value(element->parent,
 962                                                                 id, value);
 963                 __connman_element_lock(element);
 964                 *((const char **) value) = __connman_ipv4_method2string(element->ipv4.method);
 965                 __connman_element_unlock(element);
 966                 break;
 967         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 968                 if (element->ipv4.address == NULL)
 969                         return connman_element_get_value(element->parent,
 970                                                                 id, value);
 971                 __connman_element_lock(element);
 972                 *((char **) value) = element->ipv4.address;
 973                 __connman_element_unlock(element);
 974                 break;
 975         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 976                 if (element->ipv4.netmask == NULL)
 977                         return connman_element_get_value(element->parent,
 978                                                                 id, value);
 979                 __connman_element_lock(element);
 980                 *((char **) value) = element->ipv4.netmask;
 981                 __connman_element_unlock(element);
 982                 break;
 983         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 984                 if (element->ipv4.gateway == NULL)
 985                         return connman_element_get_value(element->parent,
 986                                                                 id, value);
 987                 __connman_element_lock(element);
 988                 *((char **) value) = element->ipv4.gateway;
 989                 __connman_element_unlock(element);
 990                 break;
 991         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 992                 if (element->ipv4.broadcast == NULL)
 993                         return connman_element_get_value(element->parent,
 994                                                                 id, value);
 995                 __connman_element_lock(element);
 996                 *((char **) value) = element->ipv4.broadcast;
 997                 __connman_element_unlock(element);
 998                 break;
 999         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1000                 if (element->ipv4.nameserver == NULL)
1001                         return connman_element_get_value(element->parent,
1002                                                                 id, value);
1003                 __connman_element_lock(element);
1004                 *((char **) value) = element->ipv4.nameserver;
1005                 __connman_element_unlock(element);
1006                 break;
1007         default:
1008                 return -EINVAL;
1009         }
1010
1011         return 0;
1012 }
1013
1014 gboolean connman_element_get_static_property(struct connman_element *element,
1015                                                 const char *name, void *value)
1016 {
1017         GSList *list;
1018         gboolean found = FALSE;
1019
1020         DBG("element %p name %s", element, element->name);
1021
1022         __connman_element_lock(element);
1023
1024         for (list = element->properties; list; list = list->next) {
1025                 struct connman_property *property = list->data;
1026
1027                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1028                         continue;
1029
1030                 if (g_str_equal(property->name, name) == TRUE) {
1031                         switch (property->type) {
1032                         case DBUS_TYPE_STRING:
1033                                 *((char **) value) = property->value;
1034                                 found = TRUE;
1035                                 break;
1036                         }
1037                         break;
1038                 }
1039         }
1040
1041         __connman_element_unlock(element);
1042
1043         return found;
1044 }
1045
1046 gboolean connman_element_get_static_array_property(struct connman_element *element,
1047                                         const char *name, void *value, int *len)
1048 {
1049         GSList *list;
1050         gboolean found = FALSE;
1051
1052         DBG("element %p name %s", element, element->name);
1053
1054         __connman_element_lock(element);
1055
1056         for (list = element->properties; list; list = list->next) {
1057                 struct connman_property *property = list->data;
1058
1059                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1060                         continue;
1061
1062                 if (g_str_equal(property->name, name) == TRUE) {
1063                         *((char **) value) = property->value;
1064                         *len = property->size;
1065                         found = TRUE;
1066                         break;
1067                 }
1068         }
1069
1070         __connman_element_unlock(element);
1071
1072         return found;
1073 }
1074
1075 gboolean connman_element_match_static_property(struct connman_element *element,
1076                                         const char *name, const void *value)
1077 {
1078         GSList *list;
1079         gboolean result = FALSE;
1080
1081         DBG("element %p name %s", element, element->name);
1082
1083         __connman_element_lock(element);
1084
1085         for (list = element->properties; list; list = list->next) {
1086                 struct connman_property *property = list->data;
1087
1088                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1089                         continue;
1090
1091                 if (g_str_equal(property->name, name) == FALSE)
1092                         continue;
1093
1094                 if (property->type == DBUS_TYPE_STRING)
1095                         result = g_str_equal(property->value,
1096                                                 *((const char **) value));
1097
1098                 if (result == TRUE)
1099                         break;
1100         }
1101
1102         __connman_element_unlock(element);
1103
1104         return result;
1105 }
1106
1107 static void append_connections(DBusMessageIter *entry)
1108 {
1109         DBusMessageIter value, iter;
1110         const char *key = "Connections";
1111
1112         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1113
1114         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1115                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1116                                                                 &value);
1117
1118         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1119                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1120         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1121         dbus_message_iter_close_container(&value, &iter);
1122
1123         dbus_message_iter_close_container(entry, &value);
1124 }
1125
1126 static void emit_connections_signal(DBusConnection *conn)
1127 {
1128         DBusMessage *signal;
1129         DBusMessageIter entry;
1130
1131         DBG("conn %p", conn);
1132
1133         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1134                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1135         if (signal == NULL)
1136                 return;
1137
1138         dbus_message_iter_init_append(signal, &entry);
1139
1140         append_connections(&entry);
1141
1142         g_dbus_send_message(conn, signal);
1143 }
1144
1145 static void append_state(DBusMessageIter *entry, const char *state)
1146 {
1147         DBusMessageIter value;
1148         const char *key = "State";
1149
1150         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1151
1152         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1153                                         DBUS_TYPE_STRING_AS_STRING, &value);
1154         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1155         dbus_message_iter_close_container(entry, &value);
1156 }
1157
1158 static void emit_state_change(DBusConnection *conn, const char *state)
1159 {
1160         DBusMessage *signal;
1161         DBusMessageIter entry;
1162
1163         DBG("conn %p", conn);
1164
1165         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1166                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1167         if (signal == NULL)
1168                 return;
1169
1170         dbus_message_iter_init_append(signal, &entry);
1171
1172         append_state(&entry, state);
1173
1174         g_dbus_send_message(conn, signal);
1175 }
1176
1177 static void set_signal_strength(struct connman_element *connection)
1178 {
1179         struct connman_element *element = connection;
1180
1181         while (element != NULL) {
1182                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1183                         connection->strength = element->strength;
1184                         break;
1185                 }
1186
1187                 element = element->parent;
1188         }
1189 }
1190
1191 static void probe_element(struct connman_element *element)
1192 {
1193         GSList *list;
1194
1195         DBG("element %p name %s", element, element->name);
1196
1197         for (list = driver_list; list; list = list->next) {
1198                 struct connman_driver *driver = list->data;
1199
1200                 if (match_driver(element, driver) == FALSE)
1201                         continue;
1202
1203                 DBG("driver %p name %s", driver, driver->name);
1204
1205                 if (driver->probe(element) == 0) {
1206                         __connman_element_lock(element);
1207                         element->driver = driver;
1208                         __connman_element_unlock(element);
1209                         break;
1210                 }
1211         }
1212 }
1213
1214 static void register_element(gpointer data, gpointer user_data)
1215 {
1216         struct connman_element *element = data;
1217         const gchar *basepath;
1218         GNode *node;
1219
1220         __connman_element_lock(element);
1221
1222         if (element->parent) {
1223                 node = g_node_find(element_root, G_PRE_ORDER,
1224                                         G_TRAVERSE_ALL, element->parent);
1225                 basepath = element->parent->path;
1226         } else {
1227                 element->parent = element_root->data;
1228
1229                 node = element_root;
1230                 basepath = "";
1231         }
1232
1233         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1234
1235         set_reference_properties(element);
1236
1237         __connman_element_unlock(element);
1238
1239         DBG("element %p path %s", element, element->path);
1240
1241         g_node_append_data(node, element);
1242
1243         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1244                 set_signal_strength(element);
1245                 emit_connections_signal(connection);
1246                 emit_state_change(connection, "online");
1247         }
1248
1249         emit_element_signal(connection, "ElementAdded", element);
1250
1251         if (started == FALSE)
1252                 return;
1253
1254         probe_element(element);
1255 }
1256
1257 /**
1258  * connman_element_register:
1259  * @element: the element to register
1260  * @parent: the parent to register the element with
1261  *
1262  * Register an element with the core. It will be register under the given
1263  * parent of if %NULL is provided under the root element.
1264  *
1265  * Returns: %0 on success
1266  */
1267 int connman_element_register(struct connman_element *element,
1268                                         struct connman_element *parent)
1269 {
1270         DBG("element %p name %s parent %p", element, element->name, parent);
1271
1272         if (element->devname == NULL)
1273                 element->devname = g_strdup(element->name);
1274
1275         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1276                 if (g_pattern_match_simple(device_filter,
1277                                                 element->devname) == FALSE) {
1278                         DBG("ignoring %s [%s] device", element->name,
1279                                                         element->devname);
1280                         return -EPERM;
1281                 }
1282         }
1283
1284         if (connman_element_ref(element) == NULL)
1285                 return -EINVAL;
1286
1287         __connman_element_lock(element);
1288
1289         if (element->name == NULL) {
1290                 element->name = g_strdup(type2string(element->type));
1291                 if (element->name == NULL) {
1292                         __connman_element_unlock(element);
1293                         return -EINVAL;
1294                 }
1295         }
1296
1297         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1298                 element->ipv4.method = CONNMAN_IPV4_METHOD_DHCP;
1299
1300         element->parent = parent;
1301
1302         __connman_element_unlock(element);
1303
1304         register_element(element, NULL);
1305
1306         return 0;
1307 }
1308
1309 static gboolean remove_element(GNode *node, gpointer user_data)
1310 {
1311         struct connman_element *element = node->data;
1312         struct connman_element *root = user_data;
1313
1314         DBG("element %p name %s", element, element->name);
1315
1316         if (element == root)
1317                 return FALSE;
1318
1319         if (node != NULL)
1320                 g_node_unlink(node);
1321
1322         if (element->driver) {
1323                 if (element->driver->remove)
1324                         element->driver->remove(element);
1325
1326                 __connman_element_lock(element);
1327                 element->driver = NULL;
1328                 __connman_element_unlock(element);
1329         }
1330
1331         if (node != NULL)
1332                 g_node_destroy(node);
1333
1334         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1335                 if (__connman_element_count(NULL,
1336                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1337                         emit_state_change(connection, "offline");
1338                 emit_connections_signal(connection);
1339         }
1340
1341         emit_element_signal(connection, "ElementRemoved", element);
1342
1343         connman_element_unref(element);
1344
1345         return FALSE;
1346 }
1347
1348 void connman_element_unregister(struct connman_element *element)
1349 {
1350         GNode *node;
1351
1352         DBG("element %p name %s", element, element->name);
1353
1354         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1355
1356         if (node != NULL)
1357                 g_node_traverse(node, G_POST_ORDER,
1358                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1359 }
1360
1361 void connman_element_unregister_children(struct connman_element *element)
1362 {
1363         GNode *node;
1364
1365         DBG("element %p name %s", element, element->name);
1366
1367         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1368
1369         if (node != NULL)
1370                 g_node_traverse(node, G_POST_ORDER,
1371                                 G_TRAVERSE_ALL, -1, remove_element, element);
1372 }
1373
1374 static gboolean update_element(GNode *node, gpointer user_data)
1375 {
1376         struct connman_element *element = node->data;
1377         struct connman_element *root = user_data;
1378
1379         DBG("element %p name %s", element, element->name);
1380
1381         if (element->driver && element->driver->update)
1382                 element->driver->update(element);
1383
1384         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1385                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1386                 if (element->strength != root->strength)
1387                         element->strength = root->strength;
1388         }
1389
1390         emit_element_signal(connection, "ElementUpdated", element);
1391
1392         return FALSE;
1393 }
1394
1395 void connman_element_update(struct connman_element *element)
1396 {
1397         GNode *node;
1398
1399         DBG("element %p name %s", element, element->name);
1400
1401         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1402
1403         if (node != NULL)
1404                 g_node_traverse(node, G_PRE_ORDER,
1405                                 G_TRAVERSE_ALL, -1, update_element, element);
1406 }
1407
1408 int connman_element_set_enabled(struct connman_element *element,
1409                                                         gboolean enabled)
1410 {
1411         if (element->enabled == enabled)
1412                 return 0;
1413
1414         element->enabled = enabled;
1415
1416         return 0;
1417 }
1418
1419 int __connman_element_init(DBusConnection *conn, const char *device)
1420 {
1421         struct connman_element *element;
1422
1423         DBG("conn %p", conn);
1424
1425         connection = dbus_connection_ref(conn);
1426         if (connection == NULL)
1427                 return -EIO;
1428
1429         device_filter = g_strdup(device);
1430
1431         element = connman_element_create("root");
1432
1433         element->path = g_strdup("/");
1434         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1435
1436         create_default_properties(element);
1437
1438         element_root = g_node_new(element);
1439
1440         __connman_network_init();
1441         __connman_device_init();
1442
1443         return 0;
1444 }
1445
1446 static gboolean probe_node(GNode *node, gpointer data)
1447 {
1448         struct connman_element *element = node->data;
1449
1450         DBG("element %p name %s", element, element->name);
1451
1452         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1453                 return FALSE;
1454
1455         if (element->driver)
1456                 return FALSE;
1457
1458         probe_element(element);
1459
1460         return FALSE;
1461 }
1462
1463 void __connman_element_start(void)
1464 {
1465         DBG("");
1466
1467         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1468                                                         probe_node, NULL);
1469
1470         started = TRUE;
1471
1472         __connman_connection_init();
1473         __connman_ipv4_init();
1474         __connman_detect_init();
1475 }
1476
1477 void __connman_element_stop(void)
1478 {
1479         DBG("");
1480
1481         __connman_detect_cleanup();
1482         __connman_ipv4_cleanup();
1483         __connman_connection_cleanup();
1484 }
1485
1486 static gboolean free_driver(GNode *node, gpointer data)
1487 {
1488         struct connman_element *element = node->data;
1489
1490         DBG("element %p name %s", element, element->name);
1491
1492         if (element->driver) {
1493                 if (element->driver->remove)
1494                         element->driver->remove(element);
1495
1496                 __connman_element_lock(element);
1497                 element->driver = NULL;
1498                 __connman_element_unlock(element);
1499         }
1500
1501         return FALSE;
1502 }
1503
1504 static gboolean free_node(GNode *node, gpointer data)
1505 {
1506         struct connman_element *element = node->data;
1507
1508         DBG("element %p name %s", element, element->name);
1509
1510         if (g_node_depth(node) > 1)
1511                 connman_element_unregister(element);
1512
1513         return FALSE;
1514 }
1515
1516 void __connman_element_cleanup(void)
1517 {
1518         DBG("");
1519
1520         __connman_device_cleanup();
1521         __connman_network_cleanup();
1522
1523         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1524                                                         free_driver, NULL);
1525
1526         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1527                                                         free_node, NULL);
1528
1529         g_node_destroy(element_root);
1530         element_root = NULL;
1531
1532         g_free(device_filter);
1533
1534         dbus_connection_unref(connection);
1535 }