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

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36
  37 static GNode *element_root = NULL;
  38 static GSList *driver_list = NULL;
  39 static gchar *device_filter = NULL;
  40
  41 static gboolean started = FALSE;
  42
  43 static const char *type2string(enum connman_element_type type)
  44 {
  45         switch (type) {
  46         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  47                 return "unknown";
  48         case CONNMAN_ELEMENT_TYPE_ROOT:
  49                 return "root";
  50         case CONNMAN_ELEMENT_TYPE_PROFILE:
  51                 return "profile";
  52         case CONNMAN_ELEMENT_TYPE_DEVICE:
  53                 return "device";
  54         case CONNMAN_ELEMENT_TYPE_NETWORK:
  55                 return "network";
  56         case CONNMAN_ELEMENT_TYPE_SERVICE:
  57                 return "service";
  58         case CONNMAN_ELEMENT_TYPE_PPP:
  59                 return "ppp";
  60         case CONNMAN_ELEMENT_TYPE_IPV4:
  61                 return "ipv4";
  62         case CONNMAN_ELEMENT_TYPE_IPV6:
  63                 return "ipv6";
  64         case CONNMAN_ELEMENT_TYPE_DHCP:
  65                 return "dhcp";
  66         case CONNMAN_ELEMENT_TYPE_BOOTP:
  67                 return "bootp";
  68         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  69                 return "zeroconf";
  70         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  71                 return "connection";
  72         case CONNMAN_ELEMENT_TYPE_VENDOR:
  73                 return "vendor";
  74         }
  75
  76         return NULL;
  77 }
  78
  79 const char *__connman_ipv4_method2string(enum connman_ipv4_method method)
  80 {
  81         switch (method) {
  82         case CONNMAN_IPV4_METHOD_UNKNOWN:
  83                 return "unknown";
  84         case CONNMAN_IPV4_METHOD_OFF:
  85                 return "off";
  86         case CONNMAN_IPV4_METHOD_STATIC:
  87                 return "static";
  88         case CONNMAN_IPV4_METHOD_DHCP:
  89                 return "dhcp";
  90         }
  91
  92         return "unknown";
  93 }
  94
  95 enum connman_ipv4_method __connman_ipv4_string2method(const char *method)
  96 {
  97         if (strcasecmp(method, "off") == 0)
  98                 return CONNMAN_IPV4_METHOD_OFF;
  99         else if (strcasecmp(method, "static") == 0)
 100                 return CONNMAN_IPV4_METHOD_STATIC;
 101         else if (strcasecmp(method, "dhcp") == 0)
 102                 return CONNMAN_IPV4_METHOD_DHCP;
 103         else
 104                 return CONNMAN_IPV4_METHOD_UNKNOWN;
 105 }
 106
 107 static void emit_element_signal(DBusConnection *conn, const char *member,
 108                                         struct connman_element *element)
 109 {
 110         DBusMessage *signal;
 111
 112         if (__connman_debug_enabled() == FALSE)
 113                 return;
 114
 115         DBG("conn %p member %s", conn, member);
 116
 117         if (element == NULL)
 118                 return;
 119
 120         signal = dbus_message_new_signal(element->path,
 121                                         CONNMAN_DEBUG_INTERFACE, member);
 122         if (signal == NULL)
 123                 return;
 124
 125         g_dbus_send_message(conn, signal);
 126 }
 127
 128 struct foreach_data {
 129         enum connman_element_type type;
 130         element_cb_t callback;
 131         gpointer user_data;
 132 };
 133
 134 static gboolean foreach_callback(GNode *node, gpointer user_data)
 135 {
 136         struct connman_element *element = node->data;
 137         struct foreach_data *data = user_data;
 138
 139         DBG("element %p name %s", element, element->name);
 140
 141         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 142                 return FALSE;
 143
 144         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 145                                         data->type != element->type)
 146                 return FALSE;
 147
 148         if (data->callback)
 149                 data->callback(element, data->user_data);
 150
 151         return FALSE;
 152 }
 153
 154 void __connman_element_foreach(struct connman_element *element,
 155                                 enum connman_element_type type,
 156                                 element_cb_t callback, gpointer user_data)
 157 {
 158         struct foreach_data data = { type, callback, user_data };
 159         GNode *node;
 160
 161         DBG("");
 162
 163         if (element != NULL) {
 164                 node = g_node_find(element_root, G_PRE_ORDER,
 165                                                 G_TRAVERSE_ALL, element);
 166                 if (node == NULL)
 167                         return;
 168         } else
 169                 node = element_root;
 170
 171         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 172                                                 foreach_callback, &data);
 173 }
 174
 175 struct append_filter {
 176         enum connman_element_type type;
 177         DBusMessageIter *iter;
 178 };
 179
 180 static gboolean append_path(GNode *node, gpointer user_data)
 181 {
 182         struct connman_element *element = node->data;
 183         struct append_filter *filter = user_data;
 184
 185         DBG("element %p name %s", element, element->name);
 186
 187         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 188                 return FALSE;
 189
 190         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 191                                         filter->type != element->type)
 192                 return FALSE;
 193
 194         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 195                         __connman_device_has_driver(element->device) == FALSE)
 196                 return FALSE;
 197
 198         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 199                         __connman_network_has_driver(element->network) == FALSE)
 200                 return FALSE;
 201
 202         dbus_message_iter_append_basic(filter->iter,
 203                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 204
 205         return FALSE;
 206 }
 207
 208 void __connman_element_list(struct connman_element *element,
 209                                         enum connman_element_type type,
 210                                                         DBusMessageIter *iter)
 211 {
 212         struct append_filter filter = { type, iter };
 213         GNode *node;
 214
 215         DBG("");
 216
 217         if (element != NULL) {
 218                 node = g_node_find(element_root, G_PRE_ORDER,
 219                                                 G_TRAVERSE_ALL, element);
 220                 if (node == NULL)
 221                         return;
 222         } else
 223                 node = element_root;
 224
 225         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 226                                                 append_path, &filter);
 227 }
 228
 229 struct count_data {
 230         enum connman_element_type type;
 231         int count;
 232 };
 233
 234 static gboolean count_element(GNode *node, gpointer user_data)
 235 {
 236         struct connman_element *element = node->data;
 237         struct count_data *data = user_data;
 238
 239         DBG("element %p name %s", element, element->name);
 240
 241         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 242                 return FALSE;
 243
 244         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 245                                         data->type != element->type)
 246                 return FALSE;
 247
 248         data->count++;
 249
 250         return FALSE;
 251 }
 252
 253 int __connman_element_count(struct connman_element *element,
 254                                         enum connman_element_type type)
 255 {
 256         struct count_data data = { type, 0 };
 257         GNode *node;
 258
 259         DBG("");
 260
 261         if (element != NULL) {
 262                 node = g_node_find(element_root, G_PRE_ORDER,
 263                                                 G_TRAVERSE_ALL, element);
 264                 if (node == NULL)
 265                         return 0;
 266         } else
 267                 node = element_root;
 268
 269         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 270                                                 count_element, &data);
 271
 272         return data.count;
 273 }
 274
 275 const char *__connman_element_get_device(struct connman_element *element)
 276 {
 277         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 278                                                 element->device != NULL)
 279                 return element->path;
 280
 281         if (element->parent == NULL)
 282                 return NULL;
 283
 284         return __connman_element_get_device(element->parent);
 285 }
 286
 287 const char *__connman_element_get_network(struct connman_element *element)
 288 {
 289         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 290                                                 element->network != NULL)
 291                 return element->path;
 292
 293         if (element->parent == NULL)
 294                 return NULL;
 295
 296         return __connman_element_get_network(element->parent);
 297 }
 298
 299 static gint compare_priority(gconstpointer a, gconstpointer b)
 300 {
 301         const struct connman_driver *driver1 = a;
 302         const struct connman_driver *driver2 = b;
 303
 304         return driver2->priority - driver1->priority;
 305 }
 306
 307 static gboolean match_driver(struct connman_element *element,
 308                                         struct connman_driver *driver)
 309 {
 310         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 311                 return FALSE;
 312
 313         if (element->type == driver->type ||
 314                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 315                 return TRUE;
 316
 317         return FALSE;
 318 }
 319
 320 static gboolean probe_driver(GNode *node, gpointer data)
 321 {
 322         struct connman_element *element = node->data;
 323         struct connman_driver *driver = data;
 324
 325         DBG("element %p name %s", element, element->name);
 326
 327         if (!element->driver && match_driver(element, driver) == TRUE) {
 328                 if (driver->probe(element) < 0)
 329                         return FALSE;
 330
 331                 __connman_element_lock(element);
 332                 element->driver = driver;
 333                 __connman_element_unlock(element);
 334         }
 335
 336         return FALSE;
 337 }
 338
 339 void __connman_driver_rescan(struct connman_driver *driver)
 340 {
 341         DBG("driver %p name %s", driver, driver->name);
 342
 343         if (!driver->probe)
 344                 return;
 345
 346         if (element_root != NULL)
 347                 g_node_traverse(element_root, G_PRE_ORDER,
 348                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 349 }
 350
 351 /**
 352  * connman_driver_register:
 353  * @driver: driver definition
 354  *
 355  * Register a new driver
 356  *
 357  * Returns: %0 on success
 358  */
 359 int connman_driver_register(struct connman_driver *driver)
 360 {
 361         DBG("driver %p name %s", driver, driver->name);
 362
 363         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 364                 return -EINVAL;
 365
 366         if (!driver->probe)
 367                 return -EINVAL;
 368
 369         driver_list = g_slist_insert_sorted(driver_list, driver,
 370                                                         compare_priority);
 371
 372         if (started == FALSE)
 373                 return 0;
 374
 375         if (element_root != NULL)
 376                 g_node_traverse(element_root, G_PRE_ORDER,
 377                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 378
 379         return 0;
 380 }
 381
 382 static gboolean remove_driver(GNode *node, gpointer data)
 383 {
 384         struct connman_element *element = node->data;
 385         struct connman_driver *driver = data;
 386
 387         DBG("element %p name %s", element, element->name);
 388
 389         if (element->driver == driver) {
 390                 if (driver->remove)
 391                         driver->remove(element);
 392
 393                 __connman_element_lock(element);
 394                 element->driver = NULL;
 395                 __connman_element_unlock(element);
 396         }
 397
 398         return FALSE;
 399 }
 400
 401 /**
 402  * connman_driver_unregister:
 403  * @driver: driver definition
 404  *
 405  * Remove a previously registered driver
 406  */
 407 void connman_driver_unregister(struct connman_driver *driver)
 408 {
 409         DBG("driver %p name %s", driver, driver->name);
 410
 411         driver_list = g_slist_remove(driver_list, driver);
 412
 413         if (element_root != NULL)
 414                 g_node_traverse(element_root, G_POST_ORDER,
 415                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 416 }
 417
 418 static void unregister_property(gpointer data)
 419 {
 420         struct connman_property *property = data;
 421
 422         DBG("property %p", property);
 423
 424         if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 425                 g_free(property->value);
 426
 427         g_free(property->name);
 428         g_free(property);
 429 }
 430
 431 void __connman_element_initialize(struct connman_element *element)
 432 {
 433         DBG("element %p", element);
 434
 435         element->refcount = 1;
 436
 437         element->name    = NULL;
 438         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 439         element->index   = -1;
 440         element->enabled = FALSE;
 441
 442         element->properties = g_hash_table_new_full(g_str_hash, g_direct_equal,
 443                                                 g_free, unregister_property);
 444 }
 445
 446 /**
 447  * connman_element_create:
 448  * @name: element name
 449  *
 450  * Allocate a new element and assign the given #name to it. If the name
 451  * is #NULL, it will be later on created based on the element type.
 452  *
 453  * Returns: a newly-allocated #connman_element structure
 454  */
 455 struct connman_element *connman_element_create(const char *name)
 456 {
 457         struct connman_element *element;
 458
 459         element = g_try_new0(struct connman_element, 1);
 460         if (element == NULL)
 461                 return NULL;
 462
 463         DBG("element %p", element);
 464
 465         __connman_element_initialize(element);
 466
 467         return element;
 468 }
 469
 470 struct connman_element *connman_element_ref(struct connman_element *element)
 471 {
 472         DBG("element %p name %s refcount %d", element, element->name,
 473                                 g_atomic_int_get(&element->refcount) + 1);
 474
 475         g_atomic_int_inc(&element->refcount);
 476
 477         return element;
 478 }
 479
 480 static void free_properties(struct connman_element *element)
 481 {
 482         DBG("element %p name %s", element, element->name);
 483
 484         __connman_element_lock(element);
 485
 486         g_hash_table_destroy(element->properties);
 487         element->properties = NULL;
 488
 489         __connman_element_unlock(element);
 490 }
 491
 492 void connman_element_unref(struct connman_element *element)
 493 {
 494         DBG("element %p name %s refcount %d", element, element->name,
 495                                 g_atomic_int_get(&element->refcount) - 1);
 496
 497         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 498                 if (element->destruct)
 499                         element->destruct(element);
 500                 free_properties(element);
 501                 g_free(element->ipv4.address);
 502                 g_free(element->ipv4.netmask);
 503                 g_free(element->ipv4.gateway);
 504                 g_free(element->ipv4.network);
 505                 g_free(element->ipv4.broadcast);
 506                 g_free(element->ipv4.nameserver);
 507                 g_free(element->devname);
 508                 g_free(element->path);
 509                 g_free(element->name);
 510                 g_free(element);
 511         }
 512 }
 513
 514 int connman_element_add_static_property(struct connman_element *element,
 515                                 const char *name, int type, const void *value)
 516 {
 517         struct connman_property *property;
 518
 519         DBG("element %p name %s", element, element->name);
 520
 521         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 522                 return -EINVAL;
 523
 524         property = g_try_new0(struct connman_property, 1);
 525         if (property == NULL)
 526                 return -ENOMEM;
 527
 528         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 529         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 530         property->name  = g_strdup(name);
 531         property->type  = type;
 532
 533         DBG("name %s type %d value %p", name, type, value);
 534
 535         switch (type) {
 536         case DBUS_TYPE_STRING:
 537                 property->value = g_strdup(*((const char **) value));
 538                 break;
 539         case DBUS_TYPE_BYTE:
 540                 property->value = g_try_malloc(1);
 541                 if (property->value != NULL)
 542                         memcpy(property->value, value, 1);
 543                 break;
 544         }
 545
 546         __connman_element_lock(element);
 547
 548         g_hash_table_insert(element->properties, g_strdup(name), property);
 549
 550         __connman_element_unlock(element);
 551
 552         return 0;
 553 }
 554
 555 int connman_element_set_static_property(struct connman_element *element,
 556                                 const char *name, int type, const void *value)
 557 {
 558         struct connman_property *property;
 559
 560         DBG("element %p name %s", element, element->name);
 561
 562         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 563                 return -EINVAL;
 564
 565         __connman_element_lock(element);
 566
 567         property = g_hash_table_lookup(element->properties, name);
 568         if (property != NULL) {
 569                 property->flags |= CONNMAN_PROPERTY_FLAG_STATIC;
 570
 571                 property->type = type;
 572                 g_free(property->value);
 573
 574                 switch (type) {
 575                 case DBUS_TYPE_STRING:
 576                         property->value = g_strdup(*((const char **) value));
 577                         break;
 578                 case DBUS_TYPE_BYTE:
 579                         property->value = g_try_malloc(1);
 580                         if (property->value != NULL)
 581                                 memcpy(property->value, value, 1);
 582                         break;
 583                 }
 584         }
 585
 586         __connman_element_unlock(element);
 587
 588         return 0;
 589 }
 590
 591 int connman_element_add_static_array_property(struct connman_element *element,
 592                         const char *name, int type, const void *value, int len)
 593 {
 594         struct connman_property *property;
 595
 596         DBG("element %p name %s", element, element->name);
 597
 598         if (type != DBUS_TYPE_BYTE)
 599                 return -EINVAL;
 600
 601         property = g_try_new0(struct connman_property, 1);
 602         if (property == NULL)
 603                 return -ENOMEM;
 604
 605         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
 606         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 607         property->name    = g_strdup(name);
 608         property->type    = DBUS_TYPE_ARRAY;
 609         property->subtype = type;
 610
 611         DBG("name %s type %d value %p", name, type, value);
 612
 613         switch (type) {
 614         case DBUS_TYPE_BYTE:
 615                 property->value = g_try_malloc(len);
 616                 if (property->value != NULL) {
 617                         memcpy(property->value,
 618                                 *((const unsigned char **) value), len);
 619                         property->size = len;
 620                 }
 621                 break;
 622         }
 623
 624         __connman_element_lock(element);
 625
 626         g_hash_table_insert(element->properties, g_strdup(name), property);
 627
 628         __connman_element_unlock(element);
 629
 630         return 0;
 631 }
 632
 633 int connman_element_set_property(struct connman_element *element,
 634                                 enum connman_property_id id, const void *value)
 635 {
 636         switch (id) {
 637         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 638                 __connman_element_lock(element);
 639                 g_free(element->ipv4.address);
 640                 element->ipv4.address = g_strdup(*((const char **) value));
 641                 __connman_element_unlock(element);
 642                 break;
 643         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 644                 __connman_element_lock(element);
 645                 g_free(element->ipv4.netmask);
 646                 element->ipv4.netmask = g_strdup(*((const char **) value));
 647                 __connman_element_unlock(element);
 648                 break;
 649         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 650                 __connman_element_lock(element);
 651                 g_free(element->ipv4.gateway);
 652                 element->ipv4.gateway = g_strdup(*((const char **) value));
 653                 __connman_element_unlock(element);
 654                 break;
 655         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 656                 __connman_element_lock(element);
 657                 g_free(element->ipv4.broadcast);
 658                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 659                 __connman_element_unlock(element);
 660                 break;
 661         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 662                 __connman_element_lock(element);
 663                 g_free(element->ipv4.nameserver);
 664                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 665                 __connman_element_unlock(element);
 666                 break;
 667         default:
 668                 return -EINVAL;
 669         }
 670
 671         return 0;
 672 }
 673
 674 int connman_element_get_value(struct connman_element *element,
 675                                 enum connman_property_id id, void *value)
 676 {
 677         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 678                 return -EINVAL;
 679
 680         switch (id) {
 681         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 682                 if (element->ipv4.method == CONNMAN_IPV4_METHOD_UNKNOWN)
 683                         return connman_element_get_value(element->parent,
 684                                                                 id, value);
 685                 __connman_element_lock(element);
 686                 *((const char **) value) = __connman_ipv4_method2string(element->ipv4.method);
 687                 __connman_element_unlock(element);
 688                 break;
 689         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 690                 if (element->ipv4.address == NULL)
 691                         return connman_element_get_value(element->parent,
 692                                                                 id, value);
 693                 __connman_element_lock(element);
 694                 *((char **) value) = element->ipv4.address;
 695                 __connman_element_unlock(element);
 696                 break;
 697         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 698                 if (element->ipv4.netmask == NULL)
 699                         return connman_element_get_value(element->parent,
 700                                                                 id, value);
 701                 __connman_element_lock(element);
 702                 *((char **) value) = element->ipv4.netmask;
 703                 __connman_element_unlock(element);
 704                 break;
 705         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 706                 if (element->ipv4.gateway == NULL)
 707                         return connman_element_get_value(element->parent,
 708                                                                 id, value);
 709                 __connman_element_lock(element);
 710                 *((char **) value) = element->ipv4.gateway;
 711                 __connman_element_unlock(element);
 712                 break;
 713         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 714                 if (element->ipv4.broadcast == NULL)
 715                         return connman_element_get_value(element->parent,
 716                                                                 id, value);
 717                 __connman_element_lock(element);
 718                 *((char **) value) = element->ipv4.broadcast;
 719                 __connman_element_unlock(element);
 720                 break;
 721         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 722                 if (element->ipv4.nameserver == NULL)
 723                         return connman_element_get_value(element->parent,
 724                                                                 id, value);
 725                 __connman_element_lock(element);
 726                 *((char **) value) = element->ipv4.nameserver;
 727                 __connman_element_unlock(element);
 728                 break;
 729         default:
 730                 return -EINVAL;
 731         }
 732
 733         return 0;
 734 }
 735
 736 gboolean connman_element_get_static_property(struct connman_element *element,
 737                                                 const char *name, void *value)
 738 {
 739         struct connman_property *property;
 740         gboolean found = FALSE;
 741
 742         DBG("element %p name %s", element, element->name);
 743
 744         __connman_element_lock(element);
 745
 746         property = g_hash_table_lookup(element->properties, name);
 747         if (property != NULL &&
 748                         (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)) {
 749                 if (g_str_equal(property->name, name) == TRUE) {
 750                         switch (property->type) {
 751                         case DBUS_TYPE_STRING:
 752                                 *((char **) value) = property->value;
 753                                 found = TRUE;
 754                                 break;
 755                         case DBUS_TYPE_BYTE:
 756                                 memcpy(value, property->value, 1);
 757                                 found = TRUE;
 758                                 break;
 759                         }
 760                 }
 761         }
 762
 763         __connman_element_unlock(element);
 764
 765         if (found == FALSE && element->parent != NULL)
 766                 return connman_element_get_static_property(element->parent,
 767                                                                 name, value);
 768
 769         return found;
 770 }
 771
 772 gboolean connman_element_get_static_array_property(struct connman_element *element,
 773                                         const char *name, void *value, int *len)
 774 {
 775         struct connman_property *property;
 776         gboolean found = FALSE;
 777
 778         DBG("element %p name %s", element, element->name);
 779
 780         __connman_element_lock(element);
 781
 782         property = g_hash_table_lookup(element->properties, name);
 783         if (property != NULL &&
 784                         (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)) {
 785                 if (g_str_equal(property->name, name) == TRUE) {
 786                         *((char **) value) = property->value;
 787                         *len = property->size;
 788                         found = TRUE;
 789                 }
 790         }
 791
 792         __connman_element_unlock(element);
 793
 794         return found;
 795 }
 796
 797 gboolean connman_element_match_static_property(struct connman_element *element,
 798                                         const char *name, const void *value)
 799 {
 800         struct connman_property *property;
 801         gboolean result = FALSE;
 802
 803         DBG("element %p name %s", element, element->name);
 804
 805         __connman_element_lock(element);
 806
 807         property = g_hash_table_lookup(element->properties, name);
 808         if (property != NULL &&
 809                         (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)) {
 810                 if (g_str_equal(property->name, name) == TRUE &&
 811                                         property->type == DBUS_TYPE_STRING)
 812                         result = g_str_equal(property->value,
 813                                                 *((const char **) value));
 814         }
 815
 816         __connman_element_unlock(element);
 817
 818         return result;
 819 }
 820
 821 int __connman_element_append_ipv4(struct connman_element *element,
 822                                                 DBusMessageIter *dict)
 823 {
 824         const char *method = NULL;
 825         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 826
 827         connman_element_get_value(element,
 828                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
 829
 830         connman_element_get_value(element,
 831                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 832         connman_element_get_value(element,
 833                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 834         connman_element_get_value(element,
 835                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 836
 837         if (method != NULL)
 838                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
 839                                                 DBUS_TYPE_STRING, &method);
 840
 841         if (address != NULL)
 842                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 843                                                 DBUS_TYPE_STRING, &address);
 844
 845         if (netmask != NULL)
 846                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 847                                                 DBUS_TYPE_STRING, &netmask);
 848
 849         if (gateway != NULL)
 850                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 851                                                 DBUS_TYPE_STRING, &gateway);
 852
 853         return 0;
 854 }
 855
 856 int __connman_element_set_ipv4(struct connman_element *element,
 857                                 const char *name, DBusMessageIter *value)
 858 {
 859         int type;
 860
 861         type = dbus_message_iter_get_arg_type(value);
 862
 863         if (g_str_equal(name, "IPv4.Method") == TRUE) {
 864                 enum connman_ipv4_method method;
 865                 const char *str;
 866
 867                 if (type != DBUS_TYPE_STRING)
 868                         return -EINVAL;
 869
 870                 dbus_message_iter_get_basic(value, &str);
 871                 method = __connman_ipv4_string2method(str);
 872                 if (method == CONNMAN_IPV4_METHOD_UNKNOWN)
 873                         return -EINVAL;
 874
 875                 if (method == element->ipv4.method)
 876                         return -EALREADY;
 877
 878                 element->ipv4.method = method;
 879
 880                 connman_element_update(element);
 881         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
 882                 const char *address;
 883
 884                 if (type != DBUS_TYPE_STRING)
 885                         return -EINVAL;
 886
 887                 dbus_message_iter_get_basic(value, &address);
 888
 889                 g_free(element->ipv4.address);
 890                 element->ipv4.address = g_strdup(address);
 891
 892                 connman_element_update(element);
 893         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
 894                 const char *netmask;
 895
 896                 if (type != DBUS_TYPE_STRING)
 897                         return -EINVAL;
 898
 899                 dbus_message_iter_get_basic(value, &netmask);
 900
 901                 g_free(element->ipv4.netmask);
 902                 element->ipv4.netmask = g_strdup(netmask);
 903
 904                 connman_element_update(element);
 905         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
 906                 const char *gateway;
 907
 908                 if (type != DBUS_TYPE_STRING)
 909                         return -EINVAL;
 910
 911                 dbus_message_iter_get_basic(value, &gateway);
 912
 913                 g_free(element->ipv4.gateway);
 914                 element->ipv4.gateway = g_strdup(gateway);
 915
 916                 connman_element_update(element);
 917         }
 918
 919         return 0;
 920 }
 921
 922 static void append_connections(DBusMessageIter *entry)
 923 {
 924         DBusMessageIter value, iter;
 925         const char *key = "Connections";
 926
 927         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
 928
 929         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
 930                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
 931                                                                 &value);
 932
 933         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
 934                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
 935         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
 936         dbus_message_iter_close_container(&value, &iter);
 937
 938         dbus_message_iter_close_container(entry, &value);
 939 }
 940
 941 static void emit_connections_signal(DBusConnection *conn)
 942 {
 943         DBusMessage *signal;
 944         DBusMessageIter entry;
 945
 946         DBG("conn %p", conn);
 947
 948         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 949                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
 950         if (signal == NULL)
 951                 return;
 952
 953         dbus_message_iter_init_append(signal, &entry);
 954
 955         append_connections(&entry);
 956
 957         g_dbus_send_message(conn, signal);
 958 }
 959
 960 static void append_state(DBusMessageIter *entry, const char *state)
 961 {
 962         DBusMessageIter value;
 963         const char *key = "State";
 964
 965         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
 966
 967         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
 968                                         DBUS_TYPE_STRING_AS_STRING, &value);
 969         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
 970         dbus_message_iter_close_container(entry, &value);
 971 }
 972
 973 static void emit_state_change(DBusConnection *conn, const char *state)
 974 {
 975         DBusMessage *signal;
 976         DBusMessageIter entry;
 977
 978         DBG("conn %p", conn);
 979
 980         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 981                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
 982         if (signal == NULL)
 983                 return;
 984
 985         dbus_message_iter_init_append(signal, &entry);
 986
 987         append_state(&entry, state);
 988
 989         g_dbus_send_message(conn, signal);
 990 }
 991
 992 static void probe_element(struct connman_element *element)
 993 {
 994         GSList *list;
 995
 996         DBG("element %p name %s", element, element->name);
 997
 998         for (list = driver_list; list; list = list->next) {
 999                 struct connman_driver *driver = list->data;
1000
1001                 if (match_driver(element, driver) == FALSE)
1002                         continue;
1003
1004                 DBG("driver %p name %s", driver, driver->name);
1005
1006                 if (driver->probe(element) == 0) {
1007                         __connman_element_lock(element);
1008                         element->driver = driver;
1009                         __connman_element_unlock(element);
1010                         break;
1011                 }
1012         }
1013 }
1014
1015 static void register_element(gpointer data, gpointer user_data)
1016 {
1017         struct connman_element *element = data;
1018         const gchar *basepath;
1019         GNode *node;
1020
1021         __connman_element_lock(element);
1022
1023         if (element->parent) {
1024                 node = g_node_find(element_root, G_PRE_ORDER,
1025                                         G_TRAVERSE_ALL, element->parent);
1026                 basepath = element->parent->path;
1027         } else {
1028                 element->parent = element_root->data;
1029
1030                 node = element_root;
1031                 basepath = "";
1032         }
1033
1034         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1035
1036         __connman_element_unlock(element);
1037
1038         DBG("element %p path %s", element, element->path);
1039
1040         g_node_append_data(node, element);
1041
1042         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1043                 emit_connections_signal(connection);
1044                 emit_state_change(connection, "online");
1045         }
1046
1047         emit_element_signal(connection, "ElementAdded", element);
1048
1049         if (started == FALSE)
1050                 return;
1051
1052         probe_element(element);
1053 }
1054
1055 /**
1056  * connman_element_register:
1057  * @element: the element to register
1058  * @parent: the parent to register the element with
1059  *
1060  * Register an element with the core. It will be register under the given
1061  * parent of if %NULL is provided under the root element.
1062  *
1063  * Returns: %0 on success
1064  */
1065 int connman_element_register(struct connman_element *element,
1066                                         struct connman_element *parent)
1067 {
1068         DBG("element %p name %s parent %p", element, element->name, parent);
1069
1070         if (element->devname == NULL)
1071                 element->devname = g_strdup(element->name);
1072
1073         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1074                 if (g_pattern_match_simple(device_filter,
1075                                                 element->devname) == FALSE) {
1076                         DBG("ignoring %s [%s] device", element->name,
1077                                                         element->devname);
1078                         return -EPERM;
1079                 }
1080         }
1081
1082         if (connman_element_ref(element) == NULL)
1083                 return -EINVAL;
1084
1085         __connman_element_lock(element);
1086
1087         if (element->name == NULL) {
1088                 element->name = g_strdup(type2string(element->type));
1089                 if (element->name == NULL) {
1090                         __connman_element_unlock(element);
1091                         return -EINVAL;
1092                 }
1093         }
1094
1095         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1096                 element->ipv4.method = CONNMAN_IPV4_METHOD_DHCP;
1097
1098         element->parent = parent;
1099
1100         __connman_element_unlock(element);
1101
1102         register_element(element, NULL);
1103
1104         return 0;
1105 }
1106
1107 static gboolean remove_element(GNode *node, gpointer user_data)
1108 {
1109         struct connman_element *element = node->data;
1110         struct connman_element *root = user_data;
1111
1112         DBG("element %p name %s", element, element->name);
1113
1114         if (element == root)
1115                 return FALSE;
1116
1117         if (node != NULL)
1118                 g_node_unlink(node);
1119
1120         if (element->driver) {
1121                 if (element->driver->remove)
1122                         element->driver->remove(element);
1123
1124                 __connman_element_lock(element);
1125                 element->driver = NULL;
1126                 __connman_element_unlock(element);
1127         }
1128
1129         if (node != NULL)
1130                 g_node_destroy(node);
1131
1132         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1133                 if (__connman_element_count(NULL,
1134                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1135                         emit_state_change(connection, "offline");
1136                 emit_connections_signal(connection);
1137         }
1138
1139         emit_element_signal(connection, "ElementRemoved", element);
1140
1141         connman_element_unref(element);
1142
1143         return FALSE;
1144 }
1145
1146 void connman_element_unregister(struct connman_element *element)
1147 {
1148         GNode *node;
1149
1150         DBG("element %p name %s", element, element->name);
1151
1152         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1153
1154         if (node != NULL)
1155                 g_node_traverse(node, G_POST_ORDER,
1156                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1157 }
1158
1159 void connman_element_unregister_children(struct connman_element *element)
1160 {
1161         GNode *node;
1162
1163         DBG("element %p name %s", element, element->name);
1164
1165         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1166
1167         if (node != NULL)
1168                 g_node_traverse(node, G_POST_ORDER,
1169                                 G_TRAVERSE_ALL, -1, remove_element, element);
1170 }
1171
1172 static gboolean update_element(GNode *node, gpointer user_data)
1173 {
1174         struct connman_element *element = node->data;
1175
1176         DBG("element %p name %s", element, element->name);
1177
1178         if (element->driver && element->driver->update)
1179                 element->driver->update(element);
1180
1181         emit_element_signal(connection, "ElementUpdated", element);
1182
1183         return FALSE;
1184 }
1185
1186 void connman_element_update(struct connman_element *element)
1187 {
1188         GNode *node;
1189
1190         DBG("element %p name %s", element, element->name);
1191
1192         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1193
1194         if (node != NULL)
1195                 g_node_traverse(node, G_PRE_ORDER,
1196                                 G_TRAVERSE_ALL, -1, update_element, element);
1197 }
1198
1199 int connman_element_set_enabled(struct connman_element *element,
1200                                                         gboolean enabled)
1201 {
1202         if (element->enabled == enabled)
1203                 return 0;
1204
1205         element->enabled = enabled;
1206
1207         return 0;
1208 }
1209
1210 int __connman_element_init(DBusConnection *conn, const char *device)
1211 {
1212         struct connman_element *element;
1213
1214         DBG("conn %p", conn);
1215
1216         connection = dbus_connection_ref(conn);
1217         if (connection == NULL)
1218                 return -EIO;
1219
1220         device_filter = g_strdup(device);
1221
1222         element = connman_element_create("root");
1223
1224         element->path = g_strdup("/");
1225         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1226
1227         element_root = g_node_new(element);
1228
1229         __connman_network_init();
1230         __connman_device_init();
1231
1232         return 0;
1233 }
1234
1235 static gboolean probe_node(GNode *node, gpointer data)
1236 {
1237         struct connman_element *element = node->data;
1238
1239         DBG("element %p name %s", element, element->name);
1240
1241         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1242                 return FALSE;
1243
1244         if (element->driver)
1245                 return FALSE;
1246
1247         probe_element(element);
1248
1249         return FALSE;
1250 }
1251
1252 void __connman_element_start(void)
1253 {
1254         DBG("");
1255
1256         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1257                                                         probe_node, NULL);
1258
1259         started = TRUE;
1260
1261         __connman_storage_init_device();
1262
1263         __connman_connection_init();
1264         __connman_ipv4_init();
1265         __connman_detect_init();
1266 }
1267
1268 void __connman_element_stop(void)
1269 {
1270         DBG("");
1271
1272         __connman_detect_cleanup();
1273         __connman_ipv4_cleanup();
1274         __connman_connection_cleanup();
1275 }
1276
1277 static gboolean free_driver(GNode *node, gpointer data)
1278 {
1279         struct connman_element *element = node->data;
1280
1281         DBG("element %p name %s", element, element->name);
1282
1283         if (element->driver) {
1284                 if (element->driver->remove)
1285                         element->driver->remove(element);
1286
1287                 __connman_element_lock(element);
1288                 element->driver = NULL;
1289                 __connman_element_unlock(element);
1290         }
1291
1292         return FALSE;
1293 }
1294
1295 static gboolean free_node(GNode *node, gpointer data)
1296 {
1297         struct connman_element *element = node->data;
1298
1299         DBG("element %p name %s", element, element->name);
1300
1301         if (g_node_depth(node) > 1)
1302                 connman_element_unregister(element);
1303
1304         return FALSE;
1305 }
1306
1307 void __connman_element_cleanup(void)
1308 {
1309         DBG("");
1310
1311         __connman_device_cleanup();
1312         __connman_network_cleanup();
1313
1314         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1315                                                         free_driver, NULL);
1316
1317         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1318                                                         free_node, NULL);
1319
1320         g_node_destroy(element_root);
1321         element_root = NULL;
1322
1323         g_free(device_filter);
1324
1325         dbus_connection_unref(connection);
1326 }