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 const char *type2string(enum connman_element_type type)
  44 {
  45         switch (type) {
  46         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  47                 return "unknown";
  48         case CONNMAN_ELEMENT_TYPE_ROOT:
  49                 return "root";
  50         case CONNMAN_ELEMENT_TYPE_PROFILE:
  51                 return "profile";
  52         case CONNMAN_ELEMENT_TYPE_DEVICE:
  53                 return "device";
  54         case CONNMAN_ELEMENT_TYPE_NETWORK:
  55                 return "network";
  56         case CONNMAN_ELEMENT_TYPE_SERVICE:
  57                 return "service";
  58         case CONNMAN_ELEMENT_TYPE_PPP:
  59                 return "ppp";
  60         case CONNMAN_ELEMENT_TYPE_IPV4:
  61                 return "ipv4";
  62         case CONNMAN_ELEMENT_TYPE_IPV6:
  63                 return "ipv6";
  64         case CONNMAN_ELEMENT_TYPE_DHCP:
  65                 return "dhcp";
  66         case CONNMAN_ELEMENT_TYPE_BOOTP:
  67                 return "bootp";
  68         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  69                 return "zeroconf";
  70         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  71                 return "connection";
  72         case CONNMAN_ELEMENT_TYPE_VENDOR:
  73                 return "vendor";
  74         }
  75
  76         return NULL;
  77 }
  78
  79 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
  80 {
  81         switch (method) {
  82         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
  83                 return "unknown";
  84         case CONNMAN_IPCONFIG_METHOD_OFF:
  85                 return "off";
  86         case CONNMAN_IPCONFIG_METHOD_STATIC:
  87                 return "static";
  88         case CONNMAN_IPCONFIG_METHOD_DHCP:
  89                 return "dhcp";
  90         }
  91
  92         return "unknown";
  93 }
  94
  95 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
  96 {
  97         if (strcasecmp(method, "off") == 0)
  98                 return CONNMAN_IPCONFIG_METHOD_OFF;
  99         else if (strcasecmp(method, "static") == 0)
 100                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 101         else if (strcasecmp(method, "dhcp") == 0)
 102                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 103         else
 104                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 105 }
 106
 107 static void emit_element_signal(DBusConnection *conn, const char *member,
 108                                         struct connman_element *element)
 109 {
 110         DBusMessage *signal;
 111
 112         if (__connman_debug_enabled() == FALSE)
 113                 return;
 114
 115         DBG("conn %p member %s", conn, member);
 116
 117         if (element == NULL)
 118                 return;
 119
 120         signal = dbus_message_new_signal(element->path,
 121                                         CONNMAN_DEBUG_INTERFACE, member);
 122         if (signal == NULL)
 123                 return;
 124
 125         g_dbus_send_message(conn, signal);
 126 }
 127
 128 struct foreach_data {
 129         enum connman_element_type type;
 130         element_cb_t callback;
 131         gpointer user_data;
 132 };
 133
 134 static gboolean foreach_callback(GNode *node, gpointer user_data)
 135 {
 136         struct connman_element *element = node->data;
 137         struct foreach_data *data = user_data;
 138
 139         DBG("element %p name %s", element, element->name);
 140
 141         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 142                 return FALSE;
 143
 144         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 145                                         data->type != element->type)
 146                 return FALSE;
 147
 148         if (data->callback)
 149                 data->callback(element, data->user_data);
 150
 151         return FALSE;
 152 }
 153
 154 void __connman_element_foreach(struct connman_element *element,
 155                                 enum connman_element_type type,
 156                                 element_cb_t callback, gpointer user_data)
 157 {
 158         struct foreach_data data = { type, callback, user_data };
 159         GNode *node;
 160
 161         DBG("");
 162
 163         if (element != NULL) {
 164                 node = g_node_find(element_root, G_PRE_ORDER,
 165                                                 G_TRAVERSE_ALL, element);
 166                 if (node == NULL)
 167                         return;
 168         } else
 169                 node = element_root;
 170
 171         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 172                                                 foreach_callback, &data);
 173 }
 174
 175 struct append_filter {
 176         enum connman_element_type type;
 177         DBusMessageIter *iter;
 178 };
 179
 180 static gboolean append_path(GNode *node, gpointer user_data)
 181 {
 182         struct connman_element *element = node->data;
 183         struct append_filter *filter = user_data;
 184
 185         DBG("element %p name %s", element, element->name);
 186
 187         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 188                 return FALSE;
 189
 190         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 191                                         filter->type != element->type)
 192                 return FALSE;
 193
 194         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 195                         __connman_device_has_driver(element->device) == FALSE)
 196                 return FALSE;
 197
 198         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 199                         __connman_network_has_driver(element->network) == FALSE)
 200                 return FALSE;
 201
 202         dbus_message_iter_append_basic(filter->iter,
 203                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 204
 205         return FALSE;
 206 }
 207
 208 void __connman_element_list(struct connman_element *element,
 209                                         enum connman_element_type type,
 210                                                         DBusMessageIter *iter)
 211 {
 212         struct append_filter filter = { type, iter };
 213         GNode *node;
 214
 215         DBG("");
 216
 217         if (element != NULL) {
 218                 node = g_node_find(element_root, G_PRE_ORDER,
 219                                                 G_TRAVERSE_ALL, element);
 220                 if (node == NULL)
 221                         return;
 222         } else
 223                 node = element_root;
 224
 225         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 226                                                 append_path, &filter);
 227 }
 228
 229 struct count_data {
 230         enum connman_element_type type;
 231         int count;
 232 };
 233
 234 static gboolean count_element(GNode *node, gpointer user_data)
 235 {
 236         struct connman_element *element = node->data;
 237         struct count_data *data = user_data;
 238
 239         DBG("element %p name %s", element, element->name);
 240
 241         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 242                 return FALSE;
 243
 244         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 245                                         data->type != element->type)
 246                 return FALSE;
 247
 248         data->count++;
 249
 250         return FALSE;
 251 }
 252
 253 int __connman_element_count(struct connman_element *element,
 254                                         enum connman_element_type type)
 255 {
 256         struct count_data data = { type, 0 };
 257         GNode *node;
 258
 259         DBG("");
 260
 261         if (element != NULL) {
 262                 node = g_node_find(element_root, G_PRE_ORDER,
 263                                                 G_TRAVERSE_ALL, element);
 264                 if (node == NULL)
 265                         return 0;
 266         } else
 267                 node = element_root;
 268
 269         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 270                                                 count_element, &data);
 271
 272         return data.count;
 273 }
 274
 275 static struct connman_network *__connman_element_get_network(struct connman_element *element)
 276 {
 277         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 278                                                 element->network != NULL)
 279                 return element->network;
 280
 281         if (element->parent == NULL)
 282                 return NULL;
 283
 284         return __connman_element_get_network(element->parent);
 285 }
 286
 287 struct connman_service *__connman_element_get_service(struct connman_element *element)
 288 {
 289         struct connman_service *service = NULL;
 290         struct connman_network *network;
 291         struct connman_device *device;
 292         enum connman_device_type type;
 293
 294         device = __connman_element_get_device(element);
 295         if (device == NULL)
 296                 return NULL;
 297
 298         type = connman_device_get_type(device);
 299
 300         switch (type) {
 301         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 302         case CONNMAN_DEVICE_TYPE_VENDOR:
 303         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 304         case CONNMAN_DEVICE_TYPE_GPS:
 305         case CONNMAN_DEVICE_TYPE_HSO:
 306         case CONNMAN_DEVICE_TYPE_NOZOMI:
 307         case CONNMAN_DEVICE_TYPE_HUAWEI:
 308         case CONNMAN_DEVICE_TYPE_NOVATEL:
 309                 break;
 310         case CONNMAN_DEVICE_TYPE_ETHERNET:
 311                 service = __connman_service_lookup_from_device(device);
 312                 break;
 313         case CONNMAN_DEVICE_TYPE_WIFI:
 314         case CONNMAN_DEVICE_TYPE_WIMAX:
 315                 network = __connman_element_get_network(element);
 316                 if (network == NULL)
 317                         return NULL;
 318                 service = __connman_service_lookup_from_network(network);
 319                 break;
 320         }
 321
 322         return service;
 323 }
 324
 325 struct connman_device *__connman_element_get_device(struct connman_element *element)
 326 {
 327         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 328                                                 element->device != NULL)
 329                 return element->device;
 330
 331         if (element->parent == NULL)
 332                 return NULL;
 333
 334         return __connman_element_get_device(element->parent);
 335 }
 336
 337 const char *__connman_element_get_device_path(struct connman_element *element)
 338 {
 339         struct connman_device *device;
 340
 341         device = __connman_element_get_device(element);
 342         if (device == NULL)
 343                 return NULL;
 344
 345         return connman_device_get_path(device);
 346 }
 347
 348 const char *__connman_element_get_network_path(struct connman_element *element)
 349 {
 350         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 351                                                 element->network != NULL)
 352                 return element->path;
 353
 354         if (element->parent == NULL)
 355                 return NULL;
 356
 357         return __connman_element_get_network_path(element->parent);
 358 }
 359
 360 static gint compare_priority(gconstpointer a, gconstpointer b)
 361 {
 362         const struct connman_driver *driver1 = a;
 363         const struct connman_driver *driver2 = b;
 364
 365         return driver2->priority - driver1->priority;
 366 }
 367
 368 static gboolean match_driver(struct connman_element *element,
 369                                         struct connman_driver *driver)
 370 {
 371         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 372                 return FALSE;
 373
 374         if (element->type == driver->type ||
 375                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 376                 return TRUE;
 377
 378         return FALSE;
 379 }
 380
 381 static gboolean probe_driver(GNode *node, gpointer data)
 382 {
 383         struct connman_element *element = node->data;
 384         struct connman_driver *driver = data;
 385
 386         DBG("element %p name %s", element, element->name);
 387
 388         if (!element->driver && match_driver(element, driver) == TRUE) {
 389                 if (driver->probe(element) < 0)
 390                         return FALSE;
 391
 392                 __connman_element_lock(element);
 393                 element->driver = driver;
 394                 __connman_element_unlock(element);
 395         }
 396
 397         return FALSE;
 398 }
 399
 400 void __connman_driver_rescan(struct connman_driver *driver)
 401 {
 402         DBG("driver %p name %s", driver, driver->name);
 403
 404         if (!driver->probe)
 405                 return;
 406
 407         if (element_root != NULL)
 408                 g_node_traverse(element_root, G_PRE_ORDER,
 409                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 410 }
 411
 412 /**
 413  * connman_driver_register:
 414  * @driver: driver definition
 415  *
 416  * Register a new driver
 417  *
 418  * Returns: %0 on success
 419  */
 420 int connman_driver_register(struct connman_driver *driver)
 421 {
 422         DBG("driver %p name %s", driver, driver->name);
 423
 424         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 425                 return -EINVAL;
 426
 427         if (!driver->probe)
 428                 return -EINVAL;
 429
 430         driver_list = g_slist_insert_sorted(driver_list, driver,
 431                                                         compare_priority);
 432
 433         if (started == FALSE)
 434                 return 0;
 435
 436         if (element_root != NULL)
 437                 g_node_traverse(element_root, G_PRE_ORDER,
 438                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 439
 440         return 0;
 441 }
 442
 443 static gboolean remove_driver(GNode *node, gpointer data)
 444 {
 445         struct connman_element *element = node->data;
 446         struct connman_driver *driver = data;
 447
 448         DBG("element %p name %s", element, element->name);
 449
 450         if (element->driver == driver) {
 451                 if (driver->remove)
 452                         driver->remove(element);
 453
 454                 __connman_element_lock(element);
 455                 element->driver = NULL;
 456                 __connman_element_unlock(element);
 457         }
 458
 459         return FALSE;
 460 }
 461
 462 /**
 463  * connman_driver_unregister:
 464  * @driver: driver definition
 465  *
 466  * Remove a previously registered driver
 467  */
 468 void connman_driver_unregister(struct connman_driver *driver)
 469 {
 470         DBG("driver %p name %s", driver, driver->name);
 471
 472         driver_list = g_slist_remove(driver_list, driver);
 473
 474         if (element_root != NULL)
 475                 g_node_traverse(element_root, G_POST_ORDER,
 476                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 477 }
 478
 479 static void unregister_property(gpointer data)
 480 {
 481         struct connman_property *property = data;
 482
 483         DBG("property %p", property);
 484
 485         g_free(property->value);
 486         g_free(property);
 487 }
 488
 489 void __connman_element_initialize(struct connman_element *element)
 490 {
 491         DBG("element %p", element);
 492
 493         element->refcount = 1;
 494
 495         element->name    = NULL;
 496         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 497         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 498         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 499         element->index   = -1;
 500         element->enabled = FALSE;
 501
 502         element->configuring = FALSE;
 503
 504         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 505                                                 g_free, unregister_property);
 506 }
 507
 508 /**
 509  * connman_element_create:
 510  * @name: element name
 511  *
 512  * Allocate a new element and assign the given #name to it. If the name
 513  * is #NULL, it will be later on created based on the element type.
 514  *
 515  * Returns: a newly-allocated #connman_element structure
 516  */
 517 struct connman_element *connman_element_create(const char *name)
 518 {
 519         struct connman_element *element;
 520
 521         element = g_try_new0(struct connman_element, 1);
 522         if (element == NULL)
 523                 return NULL;
 524
 525         DBG("element %p", element);
 526
 527         __connman_element_initialize(element);
 528
 529         return element;
 530 }
 531
 532 struct connman_element *connman_element_ref(struct connman_element *element)
 533 {
 534         DBG("element %p name %s refcount %d", element, element->name,
 535                                 g_atomic_int_get(&element->refcount) + 1);
 536
 537         g_atomic_int_inc(&element->refcount);
 538
 539         return element;
 540 }
 541
 542 static void free_properties(struct connman_element *element)
 543 {
 544         DBG("element %p name %s", element, element->name);
 545
 546         __connman_element_lock(element);
 547
 548         g_hash_table_destroy(element->properties);
 549         element->properties = NULL;
 550
 551         __connman_element_unlock(element);
 552 }
 553
 554 void connman_element_unref(struct connman_element *element)
 555 {
 556         DBG("element %p name %s refcount %d", element, element->name,
 557                                 g_atomic_int_get(&element->refcount) - 1);
 558
 559         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 560                 if (element->destruct)
 561                         element->destruct(element);
 562                 free_properties(element);
 563                 g_free(element->ipv4.address);
 564                 g_free(element->ipv4.netmask);
 565                 g_free(element->ipv4.gateway);
 566                 g_free(element->ipv4.network);
 567                 g_free(element->ipv4.broadcast);
 568                 g_free(element->ipv4.nameserver);
 569                 g_free(element->devname);
 570                 g_free(element->path);
 571                 g_free(element->name);
 572                 g_free(element);
 573         }
 574 }
 575
 576 static int set_static_property(struct connman_element *element,
 577                                 const char *name, int type, const void *value)
 578 {
 579         struct connman_property *property;
 580
 581         DBG("element %p name %s", element, element->name);
 582
 583         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 584                 return -EINVAL;
 585
 586         property = g_try_new0(struct connman_property, 1);
 587         if (property == NULL)
 588                 return -ENOMEM;
 589
 590         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 591         property->type = type;
 592
 593         DBG("name %s type %d value %p", name, type, value);
 594
 595         switch (type) {
 596         case DBUS_TYPE_STRING:
 597                 property->value = g_strdup(*((const char **) value));
 598                 break;
 599         case DBUS_TYPE_BYTE:
 600                 property->value = g_try_malloc(1);
 601                 if (property->value != NULL)
 602                         memcpy(property->value, value, 1);
 603                 break;
 604         }
 605
 606         __connman_element_lock(element);
 607
 608         g_hash_table_replace(element->properties, g_strdup(name), property);
 609
 610         __connman_element_unlock(element);
 611
 612         return 0;
 613 }
 614
 615 static int set_static_array_property(struct connman_element *element,
 616                         const char *name, int type, const void *value, int len)
 617 {
 618         struct connman_property *property;
 619
 620         DBG("element %p name %s", element, element->name);
 621
 622         if (type != DBUS_TYPE_BYTE)
 623                 return -EINVAL;
 624
 625         property = g_try_new0(struct connman_property, 1);
 626         if (property == NULL)
 627                 return -ENOMEM;
 628
 629         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 630         property->type    = DBUS_TYPE_ARRAY;
 631         property->subtype = type;
 632
 633         DBG("name %s type %d value %p", name, type, value);
 634
 635         switch (type) {
 636         case DBUS_TYPE_BYTE:
 637                 property->value = g_try_malloc(len);
 638                 if (property->value != NULL) {
 639                         memcpy(property->value,
 640                                 *((const unsigned char **) value), len);
 641                         property->size = len;
 642                 }
 643                 break;
 644         }
 645
 646         __connman_element_lock(element);
 647
 648         g_hash_table_replace(element->properties, g_strdup(name), property);
 649
 650         __connman_element_unlock(element);
 651
 652         return 0;
 653 }
 654
 655 #if 0
 656 static int set_property(struct connman_element *element,
 657                                 enum connman_property_id id, const void *value)
 658 {
 659         switch (id) {
 660         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 661                 __connman_element_lock(element);
 662                 g_free(element->ipv4.address);
 663                 element->ipv4.address = g_strdup(*((const char **) value));
 664                 __connman_element_unlock(element);
 665                 break;
 666         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 667                 __connman_element_lock(element);
 668                 g_free(element->ipv4.netmask);
 669                 element->ipv4.netmask = g_strdup(*((const char **) value));
 670                 __connman_element_unlock(element);
 671                 break;
 672         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 673                 __connman_element_lock(element);
 674                 g_free(element->ipv4.gateway);
 675                 element->ipv4.gateway = g_strdup(*((const char **) value));
 676                 __connman_element_unlock(element);
 677                 break;
 678         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 679                 __connman_element_lock(element);
 680                 g_free(element->ipv4.broadcast);
 681                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 682                 __connman_element_unlock(element);
 683                 break;
 684         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 685                 __connman_element_lock(element);
 686                 g_free(element->ipv4.nameserver);
 687                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 688                 __connman_element_unlock(element);
 689                 break;
 690         default:
 691                 return -EINVAL;
 692         }
 693
 694         return 0;
 695 }
 696 #endif
 697
 698 int connman_element_get_value(struct connman_element *element,
 699                                 enum connman_property_id id, void *value)
 700 {
 701         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 702                 return -EINVAL;
 703
 704         switch (id) {
 705         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 706                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 707                         return connman_element_get_value(element->parent,
 708                                                                 id, value);
 709                 __connman_element_lock(element);
 710                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 711                 __connman_element_unlock(element);
 712                 break;
 713         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 714                 if (element->ipv4.address == NULL)
 715                         return connman_element_get_value(element->parent,
 716                                                                 id, value);
 717                 __connman_element_lock(element);
 718                 *((char **) value) = element->ipv4.address;
 719                 __connman_element_unlock(element);
 720                 break;
 721         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 722                 if (element->ipv4.netmask == NULL)
 723                         return connman_element_get_value(element->parent,
 724                                                                 id, value);
 725                 __connman_element_lock(element);
 726                 *((char **) value) = element->ipv4.netmask;
 727                 __connman_element_unlock(element);
 728                 break;
 729         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 730                 if (element->ipv4.gateway == NULL)
 731                         return connman_element_get_value(element->parent,
 732                                                                 id, value);
 733                 __connman_element_lock(element);
 734                 *((char **) value) = element->ipv4.gateway;
 735                 __connman_element_unlock(element);
 736                 break;
 737         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 738                 if (element->ipv4.broadcast == NULL)
 739                         return connman_element_get_value(element->parent,
 740                                                                 id, value);
 741                 __connman_element_lock(element);
 742                 *((char **) value) = element->ipv4.broadcast;
 743                 __connman_element_unlock(element);
 744                 break;
 745         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 746                 if (element->ipv4.nameserver == NULL)
 747                         return connman_element_get_value(element->parent,
 748                                                                 id, value);
 749                 __connman_element_lock(element);
 750                 *((char **) value) = element->ipv4.nameserver;
 751                 __connman_element_unlock(element);
 752                 break;
 753         default:
 754                 return -EINVAL;
 755         }
 756
 757         return 0;
 758 }
 759
 760 static gboolean get_static_property(struct connman_element *element,
 761                                                 const char *name, void *value)
 762 {
 763         struct connman_property *property;
 764         gboolean found = FALSE;
 765
 766         DBG("element %p name %s", element, element->name);
 767
 768         __connman_element_lock(element);
 769
 770         property = g_hash_table_lookup(element->properties, name);
 771         if (property != NULL) {
 772                 switch (property->type) {
 773                 case DBUS_TYPE_STRING:
 774                         *((char **) value) = property->value;
 775                         found = TRUE;
 776                         break;
 777                 case DBUS_TYPE_BYTE:
 778                         memcpy(value, property->value, 1);
 779                         found = TRUE;
 780                         break;
 781                 }
 782         }
 783
 784         __connman_element_unlock(element);
 785
 786         if (found == FALSE && element->parent != NULL)
 787                 return get_static_property(element->parent, name, value);
 788
 789         return found;
 790 }
 791
 792 static gboolean get_static_array_property(struct connman_element *element,
 793                         const char *name, void *value, unsigned int *len)
 794 {
 795         struct connman_property *property;
 796         gboolean found = FALSE;
 797
 798         DBG("element %p name %s", element, element->name);
 799
 800         __connman_element_lock(element);
 801
 802         property = g_hash_table_lookup(element->properties, name);
 803         if (property != NULL) {
 804                 *((char **) value) = property->value;
 805                 *len = property->size;
 806                 found = TRUE;
 807         }
 808
 809         __connman_element_unlock(element);
 810
 811         return found;
 812 }
 813
 814 #if 0
 815 static gboolean match_static_property(struct connman_element *element,
 816                                         const char *name, const void *value)
 817 {
 818         struct connman_property *property;
 819         gboolean result = FALSE;
 820
 821         DBG("element %p name %s", element, element->name);
 822
 823         __connman_element_lock(element);
 824
 825         property = g_hash_table_lookup(element->properties, name);
 826         if (property != NULL) {
 827                 if (property->type == DBUS_TYPE_STRING)
 828                         result = g_str_equal(property->value,
 829                                                 *((const char **) value));
 830         }
 831
 832         __connman_element_unlock(element);
 833
 834         return result;
 835 }
 836 #endif
 837
 838 /**
 839  * connman_element_set_string:
 840  * @element: element structure
 841  * @key: unique identifier
 842  * @value: string value
 843  *
 844  * Set string value for specific key
 845  */
 846 int connman_element_set_string(struct connman_element *element,
 847                                         const char *key, const char *value)
 848 {
 849         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 850 }
 851
 852 /**
 853  * connman_element_get_string:
 854  * @element: element structure
 855  * @key: unique identifier
 856  *
 857  * Get string value for specific key
 858  */
 859 const char *connman_element_get_string(struct connman_element *element,
 860                                                         const char *key)
 861 {
 862         const char *value;
 863
 864         if (get_static_property(element, key, &value) == FALSE)
 865                 return NULL;
 866
 867         return value;
 868 }
 869
 870 /**
 871  * connman_element_set_uint8:
 872  * @element: element structure
 873  * @key: unique identifier
 874  * @value: integer value
 875  *
 876  * Set integer value for specific key
 877  */
 878 int connman_element_set_uint8(struct connman_element *element,
 879                                         const char *key, connman_uint8_t value)
 880 {
 881         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 882 }
 883
 884 /**
 885  * connman_element_get_uint8:
 886  * @element: element structure
 887  * @key: unique identifier
 888  *
 889  * Get integer value for specific key
 890  */
 891 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 892                                                         const char *key)
 893 {
 894         connman_uint8_t value;
 895
 896         if (get_static_property(element, key, &value) == FALSE)
 897                 return 0;
 898
 899         return value;
 900 }
 901
 902 /**
 903  * connman_element_set_blob:
 904  * @element: element structure
 905  * @key: unique identifier
 906  * @data: blob data
 907  * @size: blob size
 908  *
 909  * Set binary blob value for specific key
 910  */
 911 int connman_element_set_blob(struct connman_element *element,
 912                         const char *key, const void *data, unsigned int size)
 913 {
 914         return set_static_array_property(element, key,
 915                                                 DBUS_TYPE_BYTE, &data, size);
 916 }
 917
 918 /**
 919  * connman_element_get_blob:
 920  * @element: element structure
 921  * @key: unique identifier
 922  * @size: pointer to blob size
 923  *
 924  * Get binary blob value for specific key
 925  */
 926 const void *connman_element_get_blob(struct connman_element *element,
 927                                         const char *key, unsigned int *size)
 928 {
 929         void *value;
 930
 931         if (get_static_array_property(element, key, &value, size) == FALSE)
 932                 return NULL;
 933
 934         return value;
 935 }
 936
 937 int __connman_element_append_ipv4(struct connman_element *element,
 938                                                 DBusMessageIter *dict)
 939 {
 940         const char *method = NULL;
 941         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 942         const char *broadcast = NULL, *nameserver = NULL;
 943
 944         connman_element_get_value(element,
 945                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
 946
 947         connman_element_get_value(element,
 948                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 949         connman_element_get_value(element,
 950                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 951         connman_element_get_value(element,
 952                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 953         connman_element_get_value(element,
 954                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
 955         connman_element_get_value(element,
 956                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
 957
 958         if (method != NULL)
 959                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
 960                                                 DBUS_TYPE_STRING, &method);
 961
 962         if (address != NULL)
 963                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 964                                                 DBUS_TYPE_STRING, &address);
 965
 966         if (netmask != NULL)
 967                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 968                                                 DBUS_TYPE_STRING, &netmask);
 969
 970         if (gateway != NULL)
 971                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 972                                                 DBUS_TYPE_STRING, &gateway);
 973
 974         if (broadcast != NULL)
 975                 connman_dbus_dict_append_variant(dict, "IPv4.Broadcast",
 976                                                 DBUS_TYPE_STRING, &broadcast);
 977
 978         if (nameserver != NULL)
 979                 connman_dbus_dict_append_variant(dict, "IPv4.Nameserver",
 980                                                 DBUS_TYPE_STRING, &nameserver);
 981
 982         return 0;
 983 }
 984
 985 int __connman_element_set_ipv4(struct connman_element *element,
 986                                 const char *name, DBusMessageIter *value)
 987 {
 988         int type;
 989
 990         type = dbus_message_iter_get_arg_type(value);
 991
 992         if (g_str_equal(name, "IPv4.Method") == TRUE) {
 993                 enum connman_ipconfig_method method;
 994                 const char *str;
 995
 996                 if (type != DBUS_TYPE_STRING)
 997                         return -EINVAL;
 998
 999                 dbus_message_iter_get_basic(value, &str);
1000                 method = __connman_ipconfig_string2method(str);
1001                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
1002                         return -EINVAL;
1003
1004                 if (method == element->ipv4.method)
1005                         return -EALREADY;
1006
1007                 element->ipv4.method = method;
1008
1009                 connman_element_update(element);
1010         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
1011                 const char *address;
1012
1013                 if (type != DBUS_TYPE_STRING)
1014                         return -EINVAL;
1015
1016                 dbus_message_iter_get_basic(value, &address);
1017
1018                 g_free(element->ipv4.address);
1019                 element->ipv4.address = g_strdup(address);
1020
1021                 connman_element_update(element);
1022         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
1023                 const char *netmask;
1024
1025                 if (type != DBUS_TYPE_STRING)
1026                         return -EINVAL;
1027
1028                 dbus_message_iter_get_basic(value, &netmask);
1029
1030                 g_free(element->ipv4.netmask);
1031                 element->ipv4.netmask = g_strdup(netmask);
1032
1033                 connman_element_update(element);
1034         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1035                 const char *gateway;
1036
1037                 if (type != DBUS_TYPE_STRING)
1038                         return -EINVAL;
1039
1040                 dbus_message_iter_get_basic(value, &gateway);
1041
1042                 g_free(element->ipv4.gateway);
1043                 element->ipv4.gateway = g_strdup(gateway);
1044
1045                 connman_element_update(element);
1046         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1047                 const char *broadcast;
1048
1049                 if (type != DBUS_TYPE_STRING)
1050                         return -EINVAL;
1051
1052                 dbus_message_iter_get_basic(value, &broadcast);
1053
1054                 g_free(element->ipv4.broadcast);
1055                 element->ipv4.broadcast = g_strdup(broadcast);
1056
1057                 connman_element_update(element);
1058         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1059                 const char *nameserver;
1060
1061                 if (type != DBUS_TYPE_STRING)
1062                         return -EINVAL;
1063
1064                 dbus_message_iter_get_basic(value, &nameserver);
1065
1066                 g_free(element->ipv4.nameserver);
1067                 element->ipv4.nameserver = g_strdup(nameserver);
1068
1069                 connman_element_update(element);
1070         }
1071
1072         return 0;
1073 }
1074
1075 static void append_state(DBusMessageIter *entry, const char *state)
1076 {
1077         DBusMessageIter value;
1078         const char *key = "State";
1079
1080         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1081
1082         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1083                                         DBUS_TYPE_STRING_AS_STRING, &value);
1084         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1085         dbus_message_iter_close_container(entry, &value);
1086 }
1087
1088 static void emit_state_change(DBusConnection *conn, const char *state)
1089 {
1090         DBusMessage *signal;
1091         DBusMessageIter entry;
1092
1093         DBG("conn %p", conn);
1094
1095         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1096                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1097         if (signal == NULL)
1098                 return;
1099
1100         dbus_message_iter_init_append(signal, &entry);
1101
1102         append_state(&entry, state);
1103
1104         g_dbus_send_message(conn, signal);
1105
1106         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1107                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1108         if (signal == NULL)
1109                 return;
1110
1111         dbus_message_iter_init_append(signal, &entry);
1112         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &state);
1113
1114         g_dbus_send_message(conn, signal);
1115 }
1116
1117 static void probe_element(struct connman_element *element)
1118 {
1119         GSList *list;
1120
1121         DBG("element %p name %s", element, element->name);
1122
1123         for (list = driver_list; list; list = list->next) {
1124                 struct connman_driver *driver = list->data;
1125
1126                 if (match_driver(element, driver) == FALSE)
1127                         continue;
1128
1129                 DBG("driver %p name %s", driver, driver->name);
1130
1131                 if (driver->probe(element) == 0) {
1132                         __connman_element_lock(element);
1133                         element->driver = driver;
1134                         __connman_element_unlock(element);
1135                         break;
1136                 }
1137         }
1138 }
1139
1140 static void register_element(gpointer data, gpointer user_data)
1141 {
1142         struct connman_element *element = data;
1143         const gchar *basepath;
1144         GNode *node;
1145
1146         __connman_element_lock(element);
1147
1148         if (element->parent) {
1149                 node = g_node_find(element_root, G_PRE_ORDER,
1150                                         G_TRAVERSE_ALL, element->parent);
1151                 basepath = element->parent->path;
1152         } else {
1153                 element->parent = element_root->data;
1154
1155                 node = element_root;
1156                 basepath = "/device";
1157         }
1158
1159         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1160
1161         __connman_element_unlock(element);
1162
1163         if (node == NULL) {
1164                 connman_error("Element registration for %s failed",
1165                                                         element->path);
1166                 return;
1167         }
1168
1169         DBG("element %p path %s", element, element->path);
1170
1171         g_node_append_data(node, element);
1172
1173         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1174                 element->parent->configuring = TRUE;
1175
1176                 if (__connman_element_count(NULL,
1177                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1178                         emit_state_change(connection, "connecting");
1179         }
1180
1181         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1182                 struct connman_element *parent = element->parent;
1183
1184                 while (parent) {
1185                         parent->configuring = FALSE;
1186                         parent = parent->parent;
1187                 }
1188
1189                 if (__connman_element_count(NULL,
1190                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1191                         emit_state_change(connection, "online");
1192         }
1193
1194         emit_element_signal(connection, "ElementAdded", element);
1195
1196         if (started == FALSE)
1197                 return;
1198
1199         probe_element(element);
1200 }
1201
1202 /**
1203  * connman_element_register:
1204  * @element: the element to register
1205  * @parent: the parent to register the element with
1206  *
1207  * Register an element with the core. It will be register under the given
1208  * parent of if %NULL is provided under the root element.
1209  *
1210  * Returns: %0 on success
1211  */
1212 int connman_element_register(struct connman_element *element,
1213                                         struct connman_element *parent)
1214 {
1215         DBG("element %p name %s parent %p", element, element->name, parent);
1216
1217         if (element->devname == NULL)
1218                 element->devname = g_strdup(element->name);
1219
1220         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1221                 if (g_pattern_match_simple(device_filter,
1222                                                 element->devname) == FALSE) {
1223                         DBG("ignoring %s [%s] device", element->name,
1224                                                         element->devname);
1225                         return -EPERM;
1226                 }
1227         }
1228
1229         if (connman_element_ref(element) == NULL)
1230                 return -EINVAL;
1231
1232         __connman_element_lock(element);
1233
1234         if (element->name == NULL) {
1235                 element->name = g_strdup(type2string(element->type));
1236                 if (element->name == NULL) {
1237                         __connman_element_unlock(element);
1238                         return -EINVAL;
1239                 }
1240         }
1241
1242         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1243                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1244
1245         element->parent = parent;
1246
1247         __connman_element_unlock(element);
1248
1249         register_element(element, NULL);
1250
1251         return 0;
1252 }
1253
1254 static gboolean remove_element(GNode *node, gpointer user_data)
1255 {
1256         struct connman_element *element = node->data;
1257         struct connman_element *root = user_data;
1258
1259         DBG("element %p name %s", element, element->name);
1260
1261         if (element == root)
1262                 return FALSE;
1263
1264         if (node != NULL)
1265                 g_node_unlink(node);
1266
1267         if (element->driver) {
1268                 if (element->driver->remove)
1269                         element->driver->remove(element);
1270
1271                 __connman_element_lock(element);
1272                 element->driver = NULL;
1273                 __connman_element_unlock(element);
1274         }
1275
1276         if (node != NULL)
1277                 g_node_destroy(node);
1278
1279         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1280                 if (__connman_element_count(NULL,
1281                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1282                         emit_state_change(connection, "offline");
1283         }
1284
1285         emit_element_signal(connection, "ElementRemoved", element);
1286
1287         connman_element_unref(element);
1288
1289         return FALSE;
1290 }
1291
1292 void connman_element_unregister(struct connman_element *element)
1293 {
1294         GNode *node;
1295
1296         DBG("element %p name %s", element, element->name);
1297
1298         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1299
1300         if (node != NULL)
1301                 g_node_traverse(node, G_POST_ORDER,
1302                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1303 }
1304
1305 void connman_element_unregister_children(struct connman_element *element)
1306 {
1307         GNode *node;
1308
1309         DBG("element %p name %s", element, element->name);
1310
1311         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1312
1313         if (node != NULL)
1314                 g_node_traverse(node, G_POST_ORDER,
1315                                 G_TRAVERSE_ALL, -1, remove_element, element);
1316 }
1317
1318 static gboolean update_element(GNode *node, gpointer user_data)
1319 {
1320         struct connman_element *element = node->data;
1321
1322         DBG("element %p name %s", element, element->name);
1323
1324         if (element->driver && element->driver->update)
1325                 element->driver->update(element);
1326
1327         emit_element_signal(connection, "ElementUpdated", element);
1328
1329         return FALSE;
1330 }
1331
1332 void connman_element_update(struct connman_element *element)
1333 {
1334         GNode *node;
1335
1336         DBG("element %p name %s", element, element->name);
1337
1338         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1339
1340         if (node != NULL)
1341                 g_node_traverse(node, G_PRE_ORDER,
1342                                 G_TRAVERSE_ALL, -1, update_element, element);
1343 }
1344
1345 int connman_element_set_enabled(struct connman_element *element,
1346                                                         gboolean enabled)
1347 {
1348         if (element->enabled == enabled)
1349                 return 0;
1350
1351         element->enabled = enabled;
1352
1353         connman_element_update(element);
1354
1355         return 0;
1356 }
1357
1358 /**
1359  * connman_element_set_error:
1360  * @element: element structure
1361  * @error: error identifier
1362  *
1363  * Set error state and specific error identifier
1364  */
1365 void connman_element_set_error(struct connman_element *element,
1366                                         enum connman_element_error error)
1367 {
1368         struct connman_service *service;
1369
1370         DBG("element %p error %d", element, error);
1371
1372         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1373                 return;
1374
1375         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1376         element->error = error;
1377
1378         if (element->driver && element->driver->change)
1379                 element->driver->change(element);
1380
1381         service = __connman_element_get_service(element);
1382         __connman_service_indicate_state(service,
1383                                         CONNMAN_SERVICE_STATE_FAILURE);
1384 }
1385
1386 int __connman_element_init(DBusConnection *conn, const char *device,
1387                                                         const char *nodevice)
1388 {
1389         struct connman_element *element;
1390
1391         DBG("conn %p", conn);
1392
1393         connection = dbus_connection_ref(conn);
1394         if (connection == NULL)
1395                 return -EIO;
1396
1397         device_filter = g_strdup(device);
1398
1399         element = connman_element_create("root");
1400
1401         element->path = g_strdup("/");
1402         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1403
1404         element_root = g_node_new(element);
1405
1406         __connman_notifier_init();
1407         __connman_service_init();
1408         __connman_network_init();
1409         __connman_device_init();
1410
1411         return 0;
1412 }
1413
1414 static gboolean probe_node(GNode *node, gpointer data)
1415 {
1416         struct connman_element *element = node->data;
1417
1418         DBG("element %p name %s", element, element->name);
1419
1420         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1421                 return FALSE;
1422
1423         if (element->driver)
1424                 return FALSE;
1425
1426         probe_element(element);
1427
1428         return FALSE;
1429 }
1430
1431 void __connman_element_start(void)
1432 {
1433         DBG("");
1434
1435         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1436                                                         probe_node, NULL);
1437
1438         started = TRUE;
1439
1440         __connman_storage_init_device();
1441
1442         __connman_connection_init();
1443         __connman_ipv4_init();
1444         __connman_detect_init();
1445         __connman_rfkill_init();
1446 }
1447
1448 void __connman_element_stop(void)
1449 {
1450         DBG("");
1451
1452         __connman_rfkill_cleanup();
1453         __connman_detect_cleanup();
1454         __connman_ipv4_cleanup();
1455         __connman_connection_cleanup();
1456 }
1457
1458 static gboolean free_driver(GNode *node, gpointer data)
1459 {
1460         struct connman_element *element = node->data;
1461
1462         DBG("element %p name %s", element, element->name);
1463
1464         if (element->driver) {
1465                 if (element->driver->remove)
1466                         element->driver->remove(element);
1467
1468                 __connman_element_lock(element);
1469                 element->driver = NULL;
1470                 __connman_element_unlock(element);
1471         }
1472
1473         return FALSE;
1474 }
1475
1476 static gboolean free_node(GNode *node, gpointer data)
1477 {
1478         struct connman_element *element = node->data;
1479
1480         DBG("element %p name %s", element, element->name);
1481
1482         if (g_node_depth(node) > 1)
1483                 connman_element_unregister(element);
1484
1485         return FALSE;
1486 }
1487
1488 void __connman_element_cleanup(void)
1489 {
1490         DBG("");
1491
1492         __connman_device_cleanup();
1493         __connman_network_cleanup();
1494         __connman_service_cleanup();
1495         __connman_notifier_cleanup();
1496
1497         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1498                                                         free_driver, NULL);
1499
1500         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1501                                                         free_node, NULL);
1502
1503         g_node_destroy(element_root);
1504         element_root = NULL;
1505
1506         g_free(device_filter);
1507
1508         dbus_connection_unref(connection);
1509 }