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