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->devpath);
 630                 g_free(element->path);
 631                 g_free(element->name);
 632                 g_free(element);
 633         }
 634 }
 635
 636 int connman_element_add_static_property(struct connman_element *element,
 637                                 const char *name, int type, const void *value)
 638 {
 639         struct connman_property *property;
 640
 641         DBG("element %p name %s", element, element->name);
 642
 643         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 644                 return -EINVAL;
 645
 646         property = g_try_new0(struct connman_property, 1);
 647         if (property == NULL)
 648                 return -ENOMEM;
 649
 650         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 651         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 652         property->name  = g_strdup(name);
 653         property->type  = type;
 654
 655         DBG("name %s type %d value %p", name, type, value);
 656
 657         switch (type) {
 658         case DBUS_TYPE_STRING:
 659                 property->value = g_strdup(*((const char **) value));
 660                 break;
 661         case DBUS_TYPE_BYTE:
 662                 property->value = g_try_malloc(1);
 663                 if (property->value != NULL)
 664                         memcpy(property->value, value, 1);
 665                 break;
 666         }
 667
 668         __connman_element_lock(element);
 669         element->properties = g_slist_append(element->properties, property);
 670         __connman_element_unlock(element);
 671
 672         return 0;
 673 }
 674
 675 int connman_element_set_static_property(struct connman_element *element,
 676                                 const char *name, int type, const void *value)
 677 {
 678         GSList *list;
 679
 680         DBG("element %p name %s", element, element->name);
 681
 682         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 683                 return -EINVAL;
 684
 685         __connman_element_lock(element);
 686
 687         for (list = element->properties; list; list = list->next) {
 688                 struct connman_property *property = list->data;
 689
 690                 if (g_str_equal(property->name, name) == FALSE)
 691                         continue;
 692
 693                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
 694                         continue;
 695
 696                 property->type = type;
 697                 g_free(property->value);
 698
 699                 switch (type) {
 700                 case DBUS_TYPE_STRING:
 701                         property->value = g_strdup(*((const char **) value));
 702                         break;
 703                 case DBUS_TYPE_BYTE:
 704                         property->value = g_try_malloc(1);
 705                         if (property->value != NULL)
 706                                 memcpy(property->value, value, 1);
 707                         break;
 708                 }
 709         }
 710
 711         __connman_element_unlock(element);
 712
 713         return 0;
 714 }
 715
 716 int connman_element_add_static_array_property(struct connman_element *element,
 717                         const char *name, int type, const void *value, int len)
 718 {
 719         struct connman_property *property;
 720
 721         DBG("element %p name %s", element, element->name);
 722
 723         if (type != DBUS_TYPE_BYTE)
 724                 return -EINVAL;
 725
 726         property = g_try_new0(struct connman_property, 1);
 727         if (property == NULL)
 728                 return -ENOMEM;
 729
 730         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
 731         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 732         property->name    = g_strdup(name);
 733         property->type    = DBUS_TYPE_ARRAY;
 734         property->subtype = type;
 735
 736         DBG("name %s type %d value %p", name, type, value);
 737
 738         switch (type) {
 739         case DBUS_TYPE_BYTE:
 740                 property->value = g_try_malloc(len);
 741                 if (property->value != NULL) {
 742                         memcpy(property->value,
 743                                 *((const unsigned char **) value), len);
 744                         property->size = len;
 745                 }
 746                 break;
 747         }
 748
 749         __connman_element_lock(element);
 750         element->properties = g_slist_append(element->properties, property);
 751         __connman_element_unlock(element);
 752
 753         return 0;
 754 }
 755
 756 static void *get_reference_value(struct connman_element *element,
 757                                                 enum connman_property_id id)
 758 {
 759         GSList *list;
 760
 761         DBG("element %p name %s", element, element->name);
 762
 763         for (list = element->properties; list; list = list->next) {
 764                 struct connman_property *property = list->data;
 765
 766                 if (property->id != id)
 767                         continue;
 768
 769                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 770                         return property->value;
 771         }
 772
 773         if (element->parent == NULL)
 774                 return NULL;
 775
 776         return get_reference_value(element->parent, id);
 777 }
 778
 779 static void set_reference_properties(struct connman_element *element)
 780 {
 781         GSList *list;
 782
 783         DBG("element %p name %s", element, element->name);
 784
 785         for (list = element->properties; list; list = list->next) {
 786                 struct connman_property *property = list->data;
 787
 788                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 789                         continue;
 790
 791                 property->value = get_reference_value(element->parent,
 792                                                                 property->id);
 793         }
 794 }
 795
 796 static struct connman_property *create_property(struct connman_element *element,
 797                                                 enum connman_property_id id)
 798 {
 799         struct connman_property *property;
 800         GSList *list;
 801
 802         DBG("element %p name %s", element, element->name);
 803
 804         __connman_element_lock(element);
 805
 806         for (list = element->properties; list; list = list->next) {
 807                 property = list->data;
 808
 809                 if (property->id == id)
 810                         goto unlock;
 811         }
 812
 813         property = g_try_new0(struct connman_property, 1);
 814         if (property == NULL)
 815                 goto unlock;
 816
 817         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
 818         property->id    = id;
 819         property->name  = g_strdup(propid2name(id));
 820         property->type  = propid2type(id);
 821
 822         if (property->name == NULL) {
 823                 g_free(property);
 824                 property = NULL;
 825                 goto unlock;
 826         }
 827
 828         element->properties = g_slist_append(element->properties, property);
 829
 830 unlock:
 831         __connman_element_unlock(element);
 832
 833         return property;
 834 }
 835
 836 static void create_default_properties(struct connman_element *element)
 837 {
 838         struct connman_property *property;
 839         int i;
 840
 841         DBG("element %p name %s", element, element->name);
 842
 843         for (i = 0; propid_table[i].name; i++) {
 844                 DBG("property %s", propid_table[i].name);
 845
 846                 property = create_property(element, propid_table[i].id);
 847
 848                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 849
 850                 if (propid_table[i].type != DBUS_TYPE_STRING)
 851                         continue;
 852
 853                 if (propid_table[i].value)
 854                         property->value = g_strdup(propid_table[i].value);
 855                 else
 856                         property->value = g_strdup("");
 857         }
 858 }
 859
 860 static int define_properties_valist(struct connman_element *element,
 861                                                                 va_list args)
 862 {
 863         enum connman_property_id id;
 864
 865         DBG("element %p name %s", element, element->name);
 866
 867         id = va_arg(args, enum connman_property_id);
 868
 869         while (id != CONNMAN_PROPERTY_ID_INVALID) {
 870
 871                 DBG("property %d", id);
 872
 873                 create_property(element, id);
 874
 875                 id = va_arg(args, enum connman_property_id);
 876         }
 877
 878         return 0;
 879 }
 880
 881 /**
 882  * connman_element_define_properties:
 883  * @element: an element
 884  * @varargs: list of property identifiers
 885  *
 886  * Define the valid properties for an element.
 887  *
 888  * Returns: %0 on success
 889  */
 890 int connman_element_define_properties(struct connman_element *element, ...)
 891 {
 892         va_list args;
 893         int err;
 894
 895         DBG("element %p name %s", element, element->name);
 896
 897         va_start(args, element);
 898
 899         err = define_properties_valist(element, args);
 900
 901         va_end(args);
 902
 903         return err;
 904 }
 905
 906 int connman_element_create_property(struct connman_element *element,
 907                                                 const char *name, int type)
 908 {
 909         return -EIO;
 910 }
 911
 912 int connman_element_set_property(struct connman_element *element,
 913                                 enum connman_property_id id, const void *value)
 914 {
 915         switch (id) {
 916         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 917                 __connman_element_lock(element);
 918                 g_free(element->ipv4.address);
 919                 element->ipv4.address = g_strdup(*((const char **) value));
 920                 __connman_element_unlock(element);
 921                 break;
 922         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 923                 __connman_element_lock(element);
 924                 g_free(element->ipv4.netmask);
 925                 element->ipv4.netmask = g_strdup(*((const char **) value));
 926                 __connman_element_unlock(element);
 927                 break;
 928         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 929                 __connman_element_lock(element);
 930                 g_free(element->ipv4.gateway);
 931                 element->ipv4.gateway = g_strdup(*((const char **) value));
 932                 __connman_element_unlock(element);
 933                 break;
 934         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 935                 __connman_element_lock(element);
 936                 g_free(element->ipv4.broadcast);
 937                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 938                 __connman_element_unlock(element);
 939                 break;
 940         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 941                 __connman_element_lock(element);
 942                 g_free(element->ipv4.nameserver);
 943                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 944                 __connman_element_unlock(element);
 945                 break;
 946         default:
 947                 return -EINVAL;
 948         }
 949
 950         return 0;
 951 }
 952
 953 int connman_element_get_value(struct connman_element *element,
 954                                 enum connman_property_id id, void *value)
 955 {
 956         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 957                 return -EINVAL;
 958
 959         switch (id) {
 960         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 961                 if (element->ipv4.method == CONNMAN_IPV4_METHOD_UNKNOWN)
 962                         return connman_element_get_value(element->parent,
 963                                                                 id, value);
 964                 __connman_element_lock(element);
 965                 *((const char **) value) = __connman_ipv4_method2string(element->ipv4.method);
 966                 __connman_element_unlock(element);
 967                 break;
 968         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 969                 if (element->ipv4.address == NULL)
 970                         return connman_element_get_value(element->parent,
 971                                                                 id, value);
 972                 __connman_element_lock(element);
 973                 *((char **) value) = element->ipv4.address;
 974                 __connman_element_unlock(element);
 975                 break;
 976         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 977                 if (element->ipv4.netmask == NULL)
 978                         return connman_element_get_value(element->parent,
 979                                                                 id, value);
 980                 __connman_element_lock(element);
 981                 *((char **) value) = element->ipv4.netmask;
 982                 __connman_element_unlock(element);
 983                 break;
 984         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 985                 if (element->ipv4.gateway == NULL)
 986                         return connman_element_get_value(element->parent,
 987                                                                 id, value);
 988                 __connman_element_lock(element);
 989                 *((char **) value) = element->ipv4.gateway;
 990                 __connman_element_unlock(element);
 991                 break;
 992         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 993                 if (element->ipv4.broadcast == NULL)
 994                         return connman_element_get_value(element->parent,
 995                                                                 id, value);
 996                 __connman_element_lock(element);
 997                 *((char **) value) = element->ipv4.broadcast;
 998                 __connman_element_unlock(element);
 999                 break;
1000         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1001                 if (element->ipv4.nameserver == NULL)
1002                         return connman_element_get_value(element->parent,
1003                                                                 id, value);
1004                 __connman_element_lock(element);
1005                 *((char **) value) = element->ipv4.nameserver;
1006                 __connman_element_unlock(element);
1007                 break;
1008         default:
1009                 return -EINVAL;
1010         }
1011
1012         return 0;
1013 }
1014
1015 gboolean connman_element_get_static_property(struct connman_element *element,
1016                                                 const char *name, void *value)
1017 {
1018         GSList *list;
1019         gboolean found = FALSE;
1020
1021         DBG("element %p name %s", element, element->name);
1022
1023         __connman_element_lock(element);
1024
1025         for (list = element->properties; list; list = list->next) {
1026                 struct connman_property *property = list->data;
1027
1028                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1029                         continue;
1030
1031                 if (g_str_equal(property->name, name) == TRUE) {
1032                         switch (property->type) {
1033                         case DBUS_TYPE_STRING:
1034                                 *((char **) value) = property->value;
1035                                 found = TRUE;
1036                                 break;
1037                         }
1038                         break;
1039                 }
1040         }
1041
1042         __connman_element_unlock(element);
1043
1044         return found;
1045 }
1046
1047 gboolean connman_element_get_static_array_property(struct connman_element *element,
1048                                         const char *name, void *value, int *len)
1049 {
1050         GSList *list;
1051         gboolean found = FALSE;
1052
1053         DBG("element %p name %s", element, element->name);
1054
1055         __connman_element_lock(element);
1056
1057         for (list = element->properties; list; list = list->next) {
1058                 struct connman_property *property = list->data;
1059
1060                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1061                         continue;
1062
1063                 if (g_str_equal(property->name, name) == TRUE) {
1064                         *((char **) value) = property->value;
1065                         *len = property->size;
1066                         found = TRUE;
1067                         break;
1068                 }
1069         }
1070
1071         __connman_element_unlock(element);
1072
1073         return found;
1074 }
1075
1076 gboolean connman_element_match_static_property(struct connman_element *element,
1077                                         const char *name, const void *value)
1078 {
1079         GSList *list;
1080         gboolean result = FALSE;
1081
1082         DBG("element %p name %s", element, element->name);
1083
1084         __connman_element_lock(element);
1085
1086         for (list = element->properties; list; list = list->next) {
1087                 struct connman_property *property = list->data;
1088
1089                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1090                         continue;
1091
1092                 if (g_str_equal(property->name, name) == FALSE)
1093                         continue;
1094
1095                 if (property->type == DBUS_TYPE_STRING)
1096                         result = g_str_equal(property->value,
1097                                                 *((const char **) value));
1098
1099                 if (result == TRUE)
1100                         break;
1101         }
1102
1103         __connman_element_unlock(element);
1104
1105         return result;
1106 }
1107
1108 static void append_connections(DBusMessageIter *entry)
1109 {
1110         DBusMessageIter value, iter;
1111         const char *key = "Connections";
1112
1113         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1114
1115         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1116                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1117                                                                 &value);
1118
1119         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1120                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1121         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1122         dbus_message_iter_close_container(&value, &iter);
1123
1124         dbus_message_iter_close_container(entry, &value);
1125 }
1126
1127 static void emit_connections_signal(DBusConnection *conn)
1128 {
1129         DBusMessage *signal;
1130         DBusMessageIter entry;
1131
1132         DBG("conn %p", conn);
1133
1134         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1135                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1136         if (signal == NULL)
1137                 return;
1138
1139         dbus_message_iter_init_append(signal, &entry);
1140
1141         append_connections(&entry);
1142
1143         g_dbus_send_message(conn, signal);
1144 }
1145
1146 static void append_state(DBusMessageIter *entry, const char *state)
1147 {
1148         DBusMessageIter value;
1149         const char *key = "State";
1150
1151         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1152
1153         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1154                                         DBUS_TYPE_STRING_AS_STRING, &value);
1155         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1156         dbus_message_iter_close_container(entry, &value);
1157 }
1158
1159 static void emit_state_change(DBusConnection *conn, const char *state)
1160 {
1161         DBusMessage *signal;
1162         DBusMessageIter entry;
1163
1164         DBG("conn %p", conn);
1165
1166         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1167                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1168         if (signal == NULL)
1169                 return;
1170
1171         dbus_message_iter_init_append(signal, &entry);
1172
1173         append_state(&entry, state);
1174
1175         g_dbus_send_message(conn, signal);
1176 }
1177
1178 static void set_signal_strength(struct connman_element *connection)
1179 {
1180         struct connman_element *element = connection;
1181
1182         while (element != NULL) {
1183                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1184                         connection->strength = element->strength;
1185                         break;
1186                 }
1187
1188                 element = element->parent;
1189         }
1190 }
1191
1192 static void probe_element(struct connman_element *element)
1193 {
1194         GSList *list;
1195
1196         DBG("element %p name %s", element, element->name);
1197
1198         for (list = driver_list; list; list = list->next) {
1199                 struct connman_driver *driver = list->data;
1200
1201                 if (match_driver(element, driver) == FALSE)
1202                         continue;
1203
1204                 DBG("driver %p name %s", driver, driver->name);
1205
1206                 if (driver->probe(element) == 0) {
1207                         __connman_element_lock(element);
1208                         element->driver = driver;
1209                         __connman_element_unlock(element);
1210                         break;
1211                 }
1212         }
1213 }
1214
1215 static void register_element(gpointer data, gpointer user_data)
1216 {
1217         struct connman_element *element = data;
1218         const gchar *basepath;
1219         GNode *node;
1220
1221         __connman_element_lock(element);
1222
1223         if (element->parent) {
1224                 node = g_node_find(element_root, G_PRE_ORDER,
1225                                         G_TRAVERSE_ALL, element->parent);
1226                 basepath = element->parent->path;
1227         } else {
1228                 element->parent = element_root->data;
1229
1230                 node = element_root;
1231                 basepath = "";
1232         }
1233
1234         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1235
1236         set_reference_properties(element);
1237
1238         __connman_element_unlock(element);
1239
1240         DBG("element %p path %s", element, element->path);
1241
1242         g_node_append_data(node, element);
1243
1244         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1245                 set_signal_strength(element);
1246                 emit_connections_signal(connection);
1247                 emit_state_change(connection, "online");
1248         }
1249
1250         emit_element_signal(connection, "ElementAdded", element);
1251
1252         if (started == FALSE)
1253                 return;
1254
1255         probe_element(element);
1256 }
1257
1258 /**
1259  * connman_element_register:
1260  * @element: the element to register
1261  * @parent: the parent to register the element with
1262  *
1263  * Register an element with the core. It will be register under the given
1264  * parent of if %NULL is provided under the root element.
1265  *
1266  * Returns: %0 on success
1267  */
1268 int connman_element_register(struct connman_element *element,
1269                                         struct connman_element *parent)
1270 {
1271         DBG("element %p name %s parent %p", element, element->name, parent);
1272
1273         if (element->devname == NULL)
1274                 element->devname = g_strdup(element->name);
1275
1276         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1277                 if (g_pattern_match_simple(device_filter,
1278                                                 element->devname) == FALSE) {
1279                         DBG("ignoring %s [%s] device", element->name,
1280                                                         element->devname);
1281                         return -EPERM;
1282                 }
1283         }
1284
1285         if (connman_element_ref(element) == NULL)
1286                 return -EINVAL;
1287
1288         __connman_element_lock(element);
1289
1290         if (element->name == NULL) {
1291                 element->name = g_strdup(type2string(element->type));
1292                 if (element->name == NULL) {
1293                         __connman_element_unlock(element);
1294                         return -EINVAL;
1295                 }
1296         }
1297
1298         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1299                 element->ipv4.method = CONNMAN_IPV4_METHOD_DHCP;
1300
1301         element->parent = parent;
1302
1303         __connman_element_unlock(element);
1304
1305         register_element(element, NULL);
1306
1307         return 0;
1308 }
1309
1310 static gboolean remove_element(GNode *node, gpointer user_data)
1311 {
1312         struct connman_element *element = node->data;
1313         struct connman_element *root = user_data;
1314
1315         DBG("element %p name %s", element, element->name);
1316
1317         if (element == root)
1318                 return FALSE;
1319
1320         if (node != NULL)
1321                 g_node_unlink(node);
1322
1323         if (element->driver) {
1324                 if (element->driver->remove)
1325                         element->driver->remove(element);
1326
1327                 __connman_element_lock(element);
1328                 element->driver = NULL;
1329                 __connman_element_unlock(element);
1330         }
1331
1332         if (node != NULL)
1333                 g_node_destroy(node);
1334
1335         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1336                 if (__connman_element_count(NULL,
1337                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1338                         emit_state_change(connection, "offline");
1339                 emit_connections_signal(connection);
1340         }
1341
1342         emit_element_signal(connection, "ElementRemoved", element);
1343
1344         connman_element_unref(element);
1345
1346         return FALSE;
1347 }
1348
1349 void connman_element_unregister(struct connman_element *element)
1350 {
1351         GNode *node;
1352
1353         DBG("element %p name %s", element, element->name);
1354
1355         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1356
1357         if (node != NULL)
1358                 g_node_traverse(node, G_POST_ORDER,
1359                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1360 }
1361
1362 void connman_element_unregister_children(struct connman_element *element)
1363 {
1364         GNode *node;
1365
1366         DBG("element %p name %s", element, element->name);
1367
1368         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1369
1370         if (node != NULL)
1371                 g_node_traverse(node, G_POST_ORDER,
1372                                 G_TRAVERSE_ALL, -1, remove_element, element);
1373 }
1374
1375 static gboolean update_element(GNode *node, gpointer user_data)
1376 {
1377         struct connman_element *element = node->data;
1378         struct connman_element *root = user_data;
1379
1380         DBG("element %p name %s", element, element->name);
1381
1382         if (element->driver && element->driver->update)
1383                 element->driver->update(element);
1384
1385         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1386                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1387                 if (element->strength != root->strength)
1388                         element->strength = root->strength;
1389         }
1390
1391         emit_element_signal(connection, "ElementUpdated", element);
1392
1393         return FALSE;
1394 }
1395
1396 void connman_element_update(struct connman_element *element)
1397 {
1398         GNode *node;
1399
1400         DBG("element %p name %s", element, element->name);
1401
1402         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1403
1404         if (node != NULL)
1405                 g_node_traverse(node, G_PRE_ORDER,
1406                                 G_TRAVERSE_ALL, -1, update_element, element);
1407 }
1408
1409 int connman_element_set_enabled(struct connman_element *element,
1410                                                         gboolean enabled)
1411 {
1412         if (element->enabled == enabled)
1413                 return 0;
1414
1415         element->enabled = enabled;
1416
1417         return 0;
1418 }
1419
1420 int __connman_element_init(DBusConnection *conn, const char *device)
1421 {
1422         struct connman_element *element;
1423
1424         DBG("conn %p", conn);
1425
1426         connection = dbus_connection_ref(conn);
1427         if (connection == NULL)
1428                 return -EIO;
1429
1430         device_filter = g_strdup(device);
1431
1432         element = connman_element_create("root");
1433
1434         element->path = g_strdup("/");
1435         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1436
1437         create_default_properties(element);
1438
1439         element_root = g_node_new(element);
1440
1441         __connman_network_init();
1442         __connman_device_init();
1443
1444         return 0;
1445 }
1446
1447 static gboolean probe_node(GNode *node, gpointer data)
1448 {
1449         struct connman_element *element = node->data;
1450
1451         DBG("element %p name %s", element, element->name);
1452
1453         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1454                 return FALSE;
1455
1456         if (element->driver)
1457                 return FALSE;
1458
1459         probe_element(element);
1460
1461         return FALSE;
1462 }
1463
1464 void __connman_element_start(void)
1465 {
1466         DBG("");
1467
1468         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1469                                                         probe_node, NULL);
1470
1471         started = TRUE;
1472
1473         __connman_connection_init();
1474         __connman_ipv4_init();
1475         __connman_detect_init();
1476 }
1477
1478 void __connman_element_stop(void)
1479 {
1480         DBG("");
1481
1482         __connman_detect_cleanup();
1483         __connman_ipv4_cleanup();
1484         __connman_connection_cleanup();
1485 }
1486
1487 static gboolean free_driver(GNode *node, gpointer data)
1488 {
1489         struct connman_element *element = node->data;
1490
1491         DBG("element %p name %s", element, element->name);
1492
1493         if (element->driver) {
1494                 if (element->driver->remove)
1495                         element->driver->remove(element);
1496
1497                 __connman_element_lock(element);
1498                 element->driver = NULL;
1499                 __connman_element_unlock(element);
1500         }
1501
1502         return FALSE;
1503 }
1504
1505 static gboolean free_node(GNode *node, gpointer data)
1506 {
1507         struct connman_element *element = node->data;
1508
1509         DBG("element %p name %s", element, element->name);
1510
1511         if (g_node_depth(node) > 1)
1512                 connman_element_unregister(element);
1513
1514         return FALSE;
1515 }
1516
1517 void __connman_element_cleanup(void)
1518 {
1519         DBG("");
1520
1521         __connman_device_cleanup();
1522         __connman_network_cleanup();
1523
1524         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1525                                                         free_driver, NULL);
1526
1527         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1528                                                         free_node, NULL);
1529
1530         g_node_destroy(element_root);
1531         element_root = NULL;
1532
1533         g_free(device_filter);
1534
1535         dbus_connection_unref(connection);
1536 }