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 struct find_data {
 334         enum connman_device_type type;
 335         struct connman_device *device;
 336 };
 337
 338 static gboolean find_device(GNode *node, gpointer user_data)
 339 {
 340         struct connman_element *element = node->data;
 341         struct find_data *data = user_data;
 342
 343         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 344                 return FALSE;
 345
 346         if (element->device == NULL)
 347                 return FALSE;
 348
 349         if (data->type != connman_device_get_type(element->device))
 350                 return FALSE;
 351
 352         data->device = element->device;
 353
 354         return TRUE;
 355 }
 356
 357 struct connman_device *__connman_element_find_device(enum connman_device_type type)
 358 {
 359         struct find_data data = { .type = type, .device = NULL };
 360
 361         g_node_traverse(element_root, G_PRE_ORDER,
 362                                 G_TRAVERSE_ALL, -1, find_device, &data);
 363
 364         return data.device;
 365 }
 366
 367 static gint compare_priority(gconstpointer a, gconstpointer b)
 368 {
 369         const struct connman_driver *driver1 = a;
 370         const struct connman_driver *driver2 = b;
 371
 372         return driver2->priority - driver1->priority;
 373 }
 374
 375 static gboolean match_driver(struct connman_element *element,
 376                                         struct connman_driver *driver)
 377 {
 378         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 379                 return FALSE;
 380
 381         if (element->type == driver->type ||
 382                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 383                 return TRUE;
 384
 385         return FALSE;
 386 }
 387
 388 static gboolean probe_driver(GNode *node, gpointer data)
 389 {
 390         struct connman_element *element = node->data;
 391         struct connman_driver *driver = data;
 392
 393         DBG("element %p name %s", element, element->name);
 394
 395         if (!element->driver && match_driver(element, driver) == TRUE) {
 396                 if (driver->probe(element) < 0)
 397                         return FALSE;
 398
 399                 __connman_element_lock(element);
 400                 element->driver = driver;
 401                 __connman_element_unlock(element);
 402         }
 403
 404         return FALSE;
 405 }
 406
 407 void __connman_driver_rescan(struct connman_driver *driver)
 408 {
 409         DBG("driver %p name %s", driver, driver->name);
 410
 411         if (!driver->probe)
 412                 return;
 413
 414         if (element_root != NULL)
 415                 g_node_traverse(element_root, G_PRE_ORDER,
 416                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 417 }
 418
 419 /**
 420  * connman_driver_register:
 421  * @driver: driver definition
 422  *
 423  * Register a new driver
 424  *
 425  * Returns: %0 on success
 426  */
 427 int connman_driver_register(struct connman_driver *driver)
 428 {
 429         DBG("driver %p name %s", driver, driver->name);
 430
 431         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 432                 return -EINVAL;
 433
 434         if (!driver->probe)
 435                 return -EINVAL;
 436
 437         driver_list = g_slist_insert_sorted(driver_list, driver,
 438                                                         compare_priority);
 439
 440         if (started == FALSE)
 441                 return 0;
 442
 443         if (element_root != NULL)
 444                 g_node_traverse(element_root, G_PRE_ORDER,
 445                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 446
 447         return 0;
 448 }
 449
 450 static gboolean remove_driver(GNode *node, gpointer data)
 451 {
 452         struct connman_element *element = node->data;
 453         struct connman_driver *driver = data;
 454
 455         DBG("element %p name %s", element, element->name);
 456
 457         if (element->driver == driver) {
 458                 if (driver->remove)
 459                         driver->remove(element);
 460
 461                 __connman_element_lock(element);
 462                 element->driver = NULL;
 463                 __connman_element_unlock(element);
 464         }
 465
 466         return FALSE;
 467 }
 468
 469 /**
 470  * connman_driver_unregister:
 471  * @driver: driver definition
 472  *
 473  * Remove a previously registered driver
 474  */
 475 void connman_driver_unregister(struct connman_driver *driver)
 476 {
 477         DBG("driver %p name %s", driver, driver->name);
 478
 479         driver_list = g_slist_remove(driver_list, driver);
 480
 481         if (element_root != NULL)
 482                 g_node_traverse(element_root, G_POST_ORDER,
 483                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 484 }
 485
 486 static void unregister_property(gpointer data)
 487 {
 488         struct connman_property *property = data;
 489
 490         DBG("property %p", property);
 491
 492         g_free(property->value);
 493         g_free(property);
 494 }
 495
 496 void __connman_element_initialize(struct connman_element *element)
 497 {
 498         DBG("element %p", element);
 499
 500         element->refcount = 1;
 501
 502         element->name    = NULL;
 503         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 504         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 505         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 506         element->index   = -1;
 507         element->enabled = FALSE;
 508
 509         element->configuring = FALSE;
 510
 511         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 512                                                 g_free, unregister_property);
 513 }
 514
 515 /**
 516  * connman_element_create:
 517  * @name: element name
 518  *
 519  * Allocate a new element and assign the given #name to it. If the name
 520  * is #NULL, it will be later on created based on the element type.
 521  *
 522  * Returns: a newly-allocated #connman_element structure
 523  */
 524 struct connman_element *connman_element_create(const char *name)
 525 {
 526         struct connman_element *element;
 527
 528         element = g_try_new0(struct connman_element, 1);
 529         if (element == NULL)
 530                 return NULL;
 531
 532         DBG("element %p", element);
 533
 534         __connman_element_initialize(element);
 535
 536         return element;
 537 }
 538
 539 struct connman_element *connman_element_ref(struct connman_element *element)
 540 {
 541         DBG("element %p name %s refcount %d", element, element->name,
 542                                 g_atomic_int_get(&element->refcount) + 1);
 543
 544         g_atomic_int_inc(&element->refcount);
 545
 546         return element;
 547 }
 548
 549 static void free_properties(struct connman_element *element)
 550 {
 551         DBG("element %p name %s", element, element->name);
 552
 553         __connman_element_lock(element);
 554
 555         g_hash_table_destroy(element->properties);
 556         element->properties = NULL;
 557
 558         __connman_element_unlock(element);
 559 }
 560
 561 void connman_element_unref(struct connman_element *element)
 562 {
 563         DBG("element %p name %s refcount %d", element, element->name,
 564                                 g_atomic_int_get(&element->refcount) - 1);
 565
 566         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 567                 if (element->destruct)
 568                         element->destruct(element);
 569                 free_properties(element);
 570                 g_free(element->ipv4.address);
 571                 g_free(element->ipv4.netmask);
 572                 g_free(element->ipv4.gateway);
 573                 g_free(element->ipv4.network);
 574                 g_free(element->ipv4.broadcast);
 575                 g_free(element->ipv4.nameserver);
 576                 g_free(element->devname);
 577                 g_free(element->path);
 578                 g_free(element->name);
 579                 g_free(element);
 580         }
 581 }
 582
 583 static int set_static_property(struct connman_element *element,
 584                                 const char *name, int type, const void *value)
 585 {
 586         struct connman_property *property;
 587
 588         DBG("element %p name %s", element, element->name);
 589
 590         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 591                 return -EINVAL;
 592
 593         property = g_try_new0(struct connman_property, 1);
 594         if (property == NULL)
 595                 return -ENOMEM;
 596
 597         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 598         property->type = type;
 599
 600         DBG("name %s type %d value %p", name, type, value);
 601
 602         switch (type) {
 603         case DBUS_TYPE_STRING:
 604                 property->value = g_strdup(*((const char **) value));
 605                 break;
 606         case DBUS_TYPE_BYTE:
 607                 property->value = g_try_malloc(1);
 608                 if (property->value != NULL)
 609                         memcpy(property->value, value, 1);
 610                 break;
 611         }
 612
 613         __connman_element_lock(element);
 614
 615         g_hash_table_replace(element->properties, g_strdup(name), property);
 616
 617         __connman_element_unlock(element);
 618
 619         return 0;
 620 }
 621
 622 static int set_static_array_property(struct connman_element *element,
 623                         const char *name, int type, const void *value, int len)
 624 {
 625         struct connman_property *property;
 626
 627         DBG("element %p name %s", element, element->name);
 628
 629         if (type != DBUS_TYPE_BYTE)
 630                 return -EINVAL;
 631
 632         property = g_try_new0(struct connman_property, 1);
 633         if (property == NULL)
 634                 return -ENOMEM;
 635
 636         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 637         property->type    = DBUS_TYPE_ARRAY;
 638         property->subtype = type;
 639
 640         DBG("name %s type %d value %p", name, type, value);
 641
 642         switch (type) {
 643         case DBUS_TYPE_BYTE:
 644                 property->value = g_try_malloc(len);
 645                 if (property->value != NULL) {
 646                         memcpy(property->value,
 647                                 *((const unsigned char **) value), len);
 648                         property->size = len;
 649                 }
 650                 break;
 651         }
 652
 653         __connman_element_lock(element);
 654
 655         g_hash_table_replace(element->properties, g_strdup(name), property);
 656
 657         __connman_element_unlock(element);
 658
 659         return 0;
 660 }
 661
 662 #if 0
 663 static int set_property(struct connman_element *element,
 664                                 enum connman_property_id id, const void *value)
 665 {
 666         switch (id) {
 667         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 668                 __connman_element_lock(element);
 669                 g_free(element->ipv4.address);
 670                 element->ipv4.address = g_strdup(*((const char **) value));
 671                 __connman_element_unlock(element);
 672                 break;
 673         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 674                 __connman_element_lock(element);
 675                 g_free(element->ipv4.netmask);
 676                 element->ipv4.netmask = g_strdup(*((const char **) value));
 677                 __connman_element_unlock(element);
 678                 break;
 679         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 680                 __connman_element_lock(element);
 681                 g_free(element->ipv4.gateway);
 682                 element->ipv4.gateway = g_strdup(*((const char **) value));
 683                 __connman_element_unlock(element);
 684                 break;
 685         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 686                 __connman_element_lock(element);
 687                 g_free(element->ipv4.broadcast);
 688                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 689                 __connman_element_unlock(element);
 690                 break;
 691         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 692                 __connman_element_lock(element);
 693                 g_free(element->ipv4.nameserver);
 694                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 695                 __connman_element_unlock(element);
 696                 break;
 697         default:
 698                 return -EINVAL;
 699         }
 700
 701         return 0;
 702 }
 703 #endif
 704
 705 int connman_element_get_value(struct connman_element *element,
 706                                 enum connman_property_id id, void *value)
 707 {
 708         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 709                 return -EINVAL;
 710
 711         switch (id) {
 712         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 713                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 714                         return connman_element_get_value(element->parent,
 715                                                                 id, value);
 716                 __connman_element_lock(element);
 717                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 718                 __connman_element_unlock(element);
 719                 break;
 720         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 721                 if (element->ipv4.address == NULL)
 722                         return connman_element_get_value(element->parent,
 723                                                                 id, value);
 724                 __connman_element_lock(element);
 725                 *((char **) value) = element->ipv4.address;
 726                 __connman_element_unlock(element);
 727                 break;
 728         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 729                 if (element->ipv4.netmask == NULL)
 730                         return connman_element_get_value(element->parent,
 731                                                                 id, value);
 732                 __connman_element_lock(element);
 733                 *((char **) value) = element->ipv4.netmask;
 734                 __connman_element_unlock(element);
 735                 break;
 736         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 737                 if (element->ipv4.gateway == NULL)
 738                         return connman_element_get_value(element->parent,
 739                                                                 id, value);
 740                 __connman_element_lock(element);
 741                 *((char **) value) = element->ipv4.gateway;
 742                 __connman_element_unlock(element);
 743                 break;
 744         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 745                 if (element->ipv4.broadcast == NULL)
 746                         return connman_element_get_value(element->parent,
 747                                                                 id, value);
 748                 __connman_element_lock(element);
 749                 *((char **) value) = element->ipv4.broadcast;
 750                 __connman_element_unlock(element);
 751                 break;
 752         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 753                 if (element->ipv4.nameserver == NULL)
 754                         return connman_element_get_value(element->parent,
 755                                                                 id, value);
 756                 __connman_element_lock(element);
 757                 *((char **) value) = element->ipv4.nameserver;
 758                 __connman_element_unlock(element);
 759                 break;
 760         default:
 761                 return -EINVAL;
 762         }
 763
 764         return 0;
 765 }
 766
 767 static gboolean get_static_property(struct connman_element *element,
 768                                                 const char *name, void *value)
 769 {
 770         struct connman_property *property;
 771         gboolean found = FALSE;
 772
 773         DBG("element %p name %s", element, element->name);
 774
 775         __connman_element_lock(element);
 776
 777         property = g_hash_table_lookup(element->properties, name);
 778         if (property != NULL) {
 779                 switch (property->type) {
 780                 case DBUS_TYPE_STRING:
 781                         *((char **) value) = property->value;
 782                         found = TRUE;
 783                         break;
 784                 case DBUS_TYPE_BYTE:
 785                         memcpy(value, property->value, 1);
 786                         found = TRUE;
 787                         break;
 788                 }
 789         }
 790
 791         __connman_element_unlock(element);
 792
 793         if (found == FALSE && element->parent != NULL)
 794                 return get_static_property(element->parent, name, value);
 795
 796         return found;
 797 }
 798
 799 static gboolean get_static_array_property(struct connman_element *element,
 800                         const char *name, void *value, unsigned int *len)
 801 {
 802         struct connman_property *property;
 803         gboolean found = FALSE;
 804
 805         DBG("element %p name %s", element, element->name);
 806
 807         __connman_element_lock(element);
 808
 809         property = g_hash_table_lookup(element->properties, name);
 810         if (property != NULL) {
 811                 *((void **) value) = property->value;
 812                 *len = property->size;
 813                 found = TRUE;
 814         }
 815
 816         __connman_element_unlock(element);
 817
 818         return found;
 819 }
 820
 821 #if 0
 822 static gboolean match_static_property(struct connman_element *element,
 823                                         const char *name, const void *value)
 824 {
 825         struct connman_property *property;
 826         gboolean result = FALSE;
 827
 828         DBG("element %p name %s", element, element->name);
 829
 830         __connman_element_lock(element);
 831
 832         property = g_hash_table_lookup(element->properties, name);
 833         if (property != NULL) {
 834                 if (property->type == DBUS_TYPE_STRING)
 835                         result = g_str_equal(property->value,
 836                                                 *((const char **) value));
 837         }
 838
 839         __connman_element_unlock(element);
 840
 841         return result;
 842 }
 843 #endif
 844
 845 /**
 846  * connman_element_set_string:
 847  * @element: element structure
 848  * @key: unique identifier
 849  * @value: string value
 850  *
 851  * Set string value for specific key
 852  */
 853 int connman_element_set_string(struct connman_element *element,
 854                                         const char *key, const char *value)
 855 {
 856         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 857 }
 858
 859 /**
 860  * connman_element_get_string:
 861  * @element: element structure
 862  * @key: unique identifier
 863  *
 864  * Get string value for specific key
 865  */
 866 const char *connman_element_get_string(struct connman_element *element,
 867                                                         const char *key)
 868 {
 869         const char *value;
 870
 871         if (get_static_property(element, key, &value) == FALSE)
 872                 return NULL;
 873
 874         return value;
 875 }
 876
 877 /**
 878  * connman_element_set_uint8:
 879  * @element: element structure
 880  * @key: unique identifier
 881  * @value: integer value
 882  *
 883  * Set integer value for specific key
 884  */
 885 int connman_element_set_uint8(struct connman_element *element,
 886                                         const char *key, connman_uint8_t value)
 887 {
 888         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 889 }
 890
 891 /**
 892  * connman_element_get_uint8:
 893  * @element: element structure
 894  * @key: unique identifier
 895  *
 896  * Get integer value for specific key
 897  */
 898 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 899                                                         const char *key)
 900 {
 901         connman_uint8_t value;
 902
 903         if (get_static_property(element, key, &value) == FALSE)
 904                 return 0;
 905
 906         return value;
 907 }
 908
 909 /**
 910  * connman_element_set_blob:
 911  * @element: element structure
 912  * @key: unique identifier
 913  * @data: blob data
 914  * @size: blob size
 915  *
 916  * Set binary blob value for specific key
 917  */
 918 int connman_element_set_blob(struct connman_element *element,
 919                         const char *key, const void *data, unsigned int size)
 920 {
 921         return set_static_array_property(element, key,
 922                                                 DBUS_TYPE_BYTE, &data, size);
 923 }
 924
 925 /**
 926  * connman_element_get_blob:
 927  * @element: element structure
 928  * @key: unique identifier
 929  * @size: pointer to blob size
 930  *
 931  * Get binary blob value for specific key
 932  */
 933 const void *connman_element_get_blob(struct connman_element *element,
 934                                         const char *key, unsigned int *size)
 935 {
 936         void *value;
 937
 938         if (get_static_array_property(element, key, &value, size) == FALSE)
 939                 return NULL;
 940
 941         return value;
 942 }
 943
 944 int __connman_element_append_ipv4(struct connman_element *element,
 945                                                 DBusMessageIter *dict)
 946 {
 947         const char *method = NULL;
 948         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 949         const char *broadcast = NULL, *nameserver = NULL;
 950
 951         connman_element_get_value(element,
 952                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
 953
 954         connman_element_get_value(element,
 955                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 956         connman_element_get_value(element,
 957                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 958         connman_element_get_value(element,
 959                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 960         connman_element_get_value(element,
 961                         CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
 962         connman_element_get_value(element,
 963                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
 964
 965         if (method != NULL)
 966                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
 967                                                 DBUS_TYPE_STRING, &method);
 968
 969         if (address != NULL)
 970                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 971                                                 DBUS_TYPE_STRING, &address);
 972
 973         if (netmask != NULL)
 974                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 975                                                 DBUS_TYPE_STRING, &netmask);
 976
 977         if (gateway != NULL)
 978                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 979                                                 DBUS_TYPE_STRING, &gateway);
 980
 981         if (broadcast != NULL)
 982                 connman_dbus_dict_append_variant(dict, "IPv4.Broadcast",
 983                                                 DBUS_TYPE_STRING, &broadcast);
 984
 985         if (nameserver != NULL)
 986                 connman_dbus_dict_append_variant(dict, "IPv4.Nameserver",
 987                                                 DBUS_TYPE_STRING, &nameserver);
 988
 989         return 0;
 990 }
 991
 992 int __connman_element_set_ipv4(struct connman_element *element,
 993                                 const char *name, DBusMessageIter *value)
 994 {
 995         int type;
 996
 997         type = dbus_message_iter_get_arg_type(value);
 998
 999         if (g_str_equal(name, "IPv4.Method") == TRUE) {
1000                 enum connman_ipconfig_method method;
1001                 const char *str;
1002
1003                 if (type != DBUS_TYPE_STRING)
1004                         return -EINVAL;
1005
1006                 dbus_message_iter_get_basic(value, &str);
1007                 method = __connman_ipconfig_string2method(str);
1008                 if (method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
1009                         return -EINVAL;
1010
1011                 if (method == element->ipv4.method)
1012                         return -EALREADY;
1013
1014                 element->ipv4.method = method;
1015
1016                 connman_element_update(element);
1017         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
1018                 const char *address;
1019
1020                 if (type != DBUS_TYPE_STRING)
1021                         return -EINVAL;
1022
1023                 dbus_message_iter_get_basic(value, &address);
1024
1025                 g_free(element->ipv4.address);
1026                 element->ipv4.address = g_strdup(address);
1027
1028                 connman_element_update(element);
1029         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
1030                 const char *netmask;
1031
1032                 if (type != DBUS_TYPE_STRING)
1033                         return -EINVAL;
1034
1035                 dbus_message_iter_get_basic(value, &netmask);
1036
1037                 g_free(element->ipv4.netmask);
1038                 element->ipv4.netmask = g_strdup(netmask);
1039
1040                 connman_element_update(element);
1041         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1042                 const char *gateway;
1043
1044                 if (type != DBUS_TYPE_STRING)
1045                         return -EINVAL;
1046
1047                 dbus_message_iter_get_basic(value, &gateway);
1048
1049                 g_free(element->ipv4.gateway);
1050                 element->ipv4.gateway = g_strdup(gateway);
1051
1052                 connman_element_update(element);
1053         } else if (g_str_equal(name, "IPv4.Broadcast") == TRUE) {
1054                 const char *broadcast;
1055
1056                 if (type != DBUS_TYPE_STRING)
1057                         return -EINVAL;
1058
1059                 dbus_message_iter_get_basic(value, &broadcast);
1060
1061                 g_free(element->ipv4.broadcast);
1062                 element->ipv4.broadcast = g_strdup(broadcast);
1063
1064                 connman_element_update(element);
1065         } else if (g_str_equal(name, "IPv4.Nameserver") == TRUE) {
1066                 const char *nameserver;
1067
1068                 if (type != DBUS_TYPE_STRING)
1069                         return -EINVAL;
1070
1071                 dbus_message_iter_get_basic(value, &nameserver);
1072
1073                 g_free(element->ipv4.nameserver);
1074                 element->ipv4.nameserver = g_strdup(nameserver);
1075
1076                 connman_element_update(element);
1077         }
1078
1079         return 0;
1080 }
1081
1082 static void append_state(DBusMessageIter *entry, const char *state)
1083 {
1084         DBusMessageIter value;
1085         const char *key = "State";
1086
1087         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1088
1089         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1090                                         DBUS_TYPE_STRING_AS_STRING, &value);
1091         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1092         dbus_message_iter_close_container(entry, &value);
1093 }
1094
1095 static void emit_state_change(DBusConnection *conn, const char *state)
1096 {
1097         DBusMessage *signal;
1098         DBusMessageIter entry;
1099
1100         DBG("conn %p", conn);
1101
1102         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1103                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1104         if (signal == NULL)
1105                 return;
1106
1107         dbus_message_iter_init_append(signal, &entry);
1108
1109         append_state(&entry, state);
1110
1111         g_dbus_send_message(conn, signal);
1112
1113         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1114                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
1115         if (signal == NULL)
1116                 return;
1117
1118         dbus_message_iter_init_append(signal, &entry);
1119         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &state);
1120
1121         g_dbus_send_message(conn, signal);
1122 }
1123
1124 static void probe_element(struct connman_element *element)
1125 {
1126         GSList *list;
1127
1128         DBG("element %p name %s", element, element->name);
1129
1130         for (list = driver_list; list; list = list->next) {
1131                 struct connman_driver *driver = list->data;
1132
1133                 if (match_driver(element, driver) == FALSE)
1134                         continue;
1135
1136                 DBG("driver %p name %s", driver, driver->name);
1137
1138                 if (driver->probe(element) == 0) {
1139                         __connman_element_lock(element);
1140                         element->driver = driver;
1141                         __connman_element_unlock(element);
1142                         break;
1143                 }
1144         }
1145 }
1146
1147 static void register_element(gpointer data, gpointer user_data)
1148 {
1149         struct connman_element *element = data;
1150         const gchar *basepath;
1151         GNode *node;
1152
1153         __connman_element_lock(element);
1154
1155         if (element->parent) {
1156                 node = g_node_find(element_root, G_PRE_ORDER,
1157                                         G_TRAVERSE_ALL, element->parent);
1158                 basepath = element->parent->path;
1159         } else {
1160                 element->parent = element_root->data;
1161
1162                 node = element_root;
1163                 basepath = "/device";
1164         }
1165
1166         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1167
1168         __connman_element_unlock(element);
1169
1170         if (node == NULL) {
1171                 connman_error("Element registration for %s failed",
1172                                                         element->path);
1173                 return;
1174         }
1175
1176         DBG("element %p path %s", element, element->path);
1177
1178         g_node_append_data(node, element);
1179
1180         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1181                 element->parent->configuring = TRUE;
1182
1183                 if (__connman_element_count(NULL,
1184                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1185                         emit_state_change(connection, "connecting");
1186         }
1187
1188         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1189                 struct connman_element *parent = element->parent;
1190
1191                 while (parent) {
1192                         parent->configuring = FALSE;
1193                         parent = parent->parent;
1194                 }
1195
1196                 if (__connman_element_count(NULL,
1197                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1198                         emit_state_change(connection, "online");
1199         }
1200
1201         emit_element_signal(connection, "ElementAdded", element);
1202
1203         if (started == FALSE)
1204                 return;
1205
1206         probe_element(element);
1207 }
1208
1209 /**
1210  * connman_element_register:
1211  * @element: the element to register
1212  * @parent: the parent to register the element with
1213  *
1214  * Register an element with the core. It will be register under the given
1215  * parent of if %NULL is provided under the root element.
1216  *
1217  * Returns: %0 on success
1218  */
1219 int connman_element_register(struct connman_element *element,
1220                                         struct connman_element *parent)
1221 {
1222         DBG("element %p name %s parent %p", element, element->name, parent);
1223
1224         if (element->devname == NULL)
1225                 element->devname = g_strdup(element->name);
1226
1227         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1228                 if (g_pattern_match_simple(device_filter,
1229                                                 element->devname) == FALSE) {
1230                         DBG("ignoring %s [%s] device", element->name,
1231                                                         element->devname);
1232                         return -EPERM;
1233                 }
1234         }
1235
1236         if (connman_element_ref(element) == NULL)
1237                 return -EINVAL;
1238
1239         __connman_element_lock(element);
1240
1241         if (element->name == NULL) {
1242                 element->name = g_strdup(type2string(element->type));
1243                 if (element->name == NULL) {
1244                         __connman_element_unlock(element);
1245                         return -EINVAL;
1246                 }
1247         }
1248
1249         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1250                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1251
1252         element->parent = parent;
1253
1254         __connman_element_unlock(element);
1255
1256         register_element(element, NULL);
1257
1258         return 0;
1259 }
1260
1261 static gboolean remove_element(GNode *node, gpointer user_data)
1262 {
1263         struct connman_element *element = node->data;
1264         struct connman_element *root = user_data;
1265
1266         DBG("element %p name %s", element, element->name);
1267
1268         if (element == root)
1269                 return FALSE;
1270
1271         if (node != NULL)
1272                 g_node_unlink(node);
1273
1274         if (element->driver) {
1275                 if (element->driver->remove)
1276                         element->driver->remove(element);
1277
1278                 __connman_element_lock(element);
1279                 element->driver = NULL;
1280                 __connman_element_unlock(element);
1281         }
1282
1283         if (node != NULL)
1284                 g_node_destroy(node);
1285
1286         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1287                 if (__connman_element_count(NULL,
1288                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1289                         emit_state_change(connection, "offline");
1290         }
1291
1292         emit_element_signal(connection, "ElementRemoved", element);
1293
1294         connman_element_unref(element);
1295
1296         return FALSE;
1297 }
1298
1299 void connman_element_unregister(struct connman_element *element)
1300 {
1301         GNode *node;
1302
1303         DBG("element %p name %s", element, element->name);
1304
1305         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1306
1307         if (node != NULL)
1308                 g_node_traverse(node, G_POST_ORDER,
1309                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1310 }
1311
1312 void connman_element_unregister_children(struct connman_element *element)
1313 {
1314         GNode *node;
1315
1316         DBG("element %p name %s", element, element->name);
1317
1318         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1319
1320         if (node != NULL)
1321                 g_node_traverse(node, G_POST_ORDER,
1322                                 G_TRAVERSE_ALL, -1, remove_element, element);
1323 }
1324
1325 static gboolean update_element(GNode *node, gpointer user_data)
1326 {
1327         struct connman_element *element = node->data;
1328
1329         DBG("element %p name %s", element, element->name);
1330
1331         if (element->driver && element->driver->update)
1332                 element->driver->update(element);
1333
1334         emit_element_signal(connection, "ElementUpdated", element);
1335
1336         return FALSE;
1337 }
1338
1339 void connman_element_update(struct connman_element *element)
1340 {
1341         GNode *node;
1342
1343         DBG("element %p name %s", element, element->name);
1344
1345         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1346
1347         if (node != NULL)
1348                 g_node_traverse(node, G_PRE_ORDER,
1349                                 G_TRAVERSE_ALL, -1, update_element, element);
1350 }
1351
1352 int connman_element_set_enabled(struct connman_element *element,
1353                                                         gboolean enabled)
1354 {
1355         if (element->enabled == enabled)
1356                 return 0;
1357
1358         element->enabled = enabled;
1359
1360         connman_element_update(element);
1361
1362         return 0;
1363 }
1364
1365 static enum connman_service_error convert_error(enum connman_element_error error)
1366 {
1367         switch (error) {
1368         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1369         case CONNMAN_ELEMENT_ERROR_FAILED:
1370                 break;
1371         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1372                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1373         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1374                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1375         }
1376
1377         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1378 }
1379
1380 /**
1381  * connman_element_set_error:
1382  * @element: element structure
1383  * @error: error identifier
1384  *
1385  * Set error state and specific error identifier
1386  */
1387 void connman_element_set_error(struct connman_element *element,
1388                                         enum connman_element_error error)
1389 {
1390         struct connman_service *service;
1391
1392         DBG("element %p error %d", element, error);
1393
1394         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1395                 return;
1396
1397         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1398         element->error = error;
1399
1400         if (element->driver && element->driver->change)
1401                 element->driver->change(element);
1402
1403         service = __connman_element_get_service(element);
1404         __connman_service_indicate_error(service, convert_error(error));
1405 }
1406
1407 int __connman_element_init(DBusConnection *conn, const char *device,
1408                                                         const char *nodevice)
1409 {
1410         struct connman_element *element;
1411
1412         DBG("conn %p", conn);
1413
1414         connection = dbus_connection_ref(conn);
1415         if (connection == NULL)
1416                 return -EIO;
1417
1418         device_filter = g_strdup(device);
1419
1420         element = connman_element_create("root");
1421
1422         element->path = g_strdup("/");
1423         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1424
1425         element_root = g_node_new(element);
1426
1427         __connman_notifier_init();
1428         __connman_service_init();
1429         __connman_network_init();
1430         __connman_device_init();
1431
1432         return 0;
1433 }
1434
1435 static gboolean probe_node(GNode *node, gpointer data)
1436 {
1437         struct connman_element *element = node->data;
1438
1439         DBG("element %p name %s", element, element->name);
1440
1441         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1442                 return FALSE;
1443
1444         if (element->driver)
1445                 return FALSE;
1446
1447         probe_element(element);
1448
1449         return FALSE;
1450 }
1451
1452 void __connman_element_start(void)
1453 {
1454         DBG("");
1455
1456         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1457                                                         probe_node, NULL);
1458
1459         started = TRUE;
1460
1461         __connman_storage_init_device();
1462
1463         __connman_connection_init();
1464         __connman_ipv4_init();
1465         __connman_rfkill_init();
1466 }
1467
1468 void __connman_element_stop(void)
1469 {
1470         DBG("");
1471
1472         __connman_rfkill_cleanup();
1473         __connman_ipv4_cleanup();
1474         __connman_connection_cleanup();
1475 }
1476
1477 static gboolean free_driver(GNode *node, gpointer data)
1478 {
1479         struct connman_element *element = node->data;
1480
1481         DBG("element %p name %s", element, element->name);
1482
1483         if (element->driver) {
1484                 if (element->driver->remove)
1485                         element->driver->remove(element);
1486
1487                 __connman_element_lock(element);
1488                 element->driver = NULL;
1489                 __connman_element_unlock(element);
1490         }
1491
1492         return FALSE;
1493 }
1494
1495 static gboolean free_node(GNode *node, gpointer data)
1496 {
1497         struct connman_element *element = node->data;
1498
1499         DBG("element %p name %s", element, element->name);
1500
1501         if (g_node_depth(node) > 1)
1502                 connman_element_unregister(element);
1503
1504         return FALSE;
1505 }
1506
1507 void __connman_element_cleanup(void)
1508 {
1509         DBG("");
1510
1511         __connman_device_cleanup();
1512         __connman_network_cleanup();
1513         __connman_service_cleanup();
1514         __connman_notifier_cleanup();
1515
1516         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1517                                                         free_driver, NULL);
1518
1519         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1520                                                         free_node, NULL);
1521
1522         g_node_destroy(element_root);
1523         element_root = NULL;
1524
1525         g_free(device_filter);
1526
1527         dbus_connection_unref(connection);
1528 }