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 struct connman_service *__connman_element_get_service(struct connman_element *element)
 276 {
 277         struct connman_service *service;
 278         struct connman_device *device;
 279         enum connman_device_type type;
 280
 281         device = __connman_element_get_device(element);
 282         if (device == NULL)
 283                 return NULL;
 284
 285         type = connman_device_get_type(device);
 286
 287         switch (type) {
 288         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 289         case CONNMAN_DEVICE_TYPE_VENDOR:
 290         case CONNMAN_DEVICE_TYPE_WIFI:
 291         case CONNMAN_DEVICE_TYPE_WIMAX:
 292         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 293         case CONNMAN_DEVICE_TYPE_GPS:
 294         case CONNMAN_DEVICE_TYPE_HSO:
 295         case CONNMAN_DEVICE_TYPE_NOZOMI:
 296         case CONNMAN_DEVICE_TYPE_HUAWEI:
 297         case CONNMAN_DEVICE_TYPE_NOVATEL:
 298                 return NULL;
 299         case CONNMAN_DEVICE_TYPE_ETHERNET:
 300                 service = __connman_service_lookup_from_device(device);
 301                 break;
 302         }
 303
 304         return service;
 305 }
 306
 307 struct connman_device *__connman_element_get_device(struct connman_element *element)
 308 {
 309         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 310                                                 element->device != NULL)
 311                 return element->device;
 312
 313         if (element->parent == NULL)
 314                 return NULL;
 315
 316         return __connman_element_get_device(element->parent);
 317 }
 318
 319 const char *__connman_element_get_device_path(struct connman_element *element)
 320 {
 321         struct connman_device *device;
 322
 323         device = __connman_element_get_device(element);
 324         if (device == NULL)
 325                 return NULL;
 326
 327         return element->path;
 328 }
 329
 330 const char *__connman_element_get_network_path(struct connman_element *element)
 331 {
 332         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 333                                                 element->network != NULL)
 334                 return element->path;
 335
 336         if (element->parent == NULL)
 337                 return NULL;
 338
 339         return __connman_element_get_network_path(element->parent);
 340 }
 341
 342 static gint compare_priority(gconstpointer a, gconstpointer b)
 343 {
 344         const struct connman_driver *driver1 = a;
 345         const struct connman_driver *driver2 = b;
 346
 347         return driver2->priority - driver1->priority;
 348 }
 349
 350 static gboolean match_driver(struct connman_element *element,
 351                                         struct connman_driver *driver)
 352 {
 353         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 354                 return FALSE;
 355
 356         if (element->type == driver->type ||
 357                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 358                 return TRUE;
 359
 360         return FALSE;
 361 }
 362
 363 static gboolean probe_driver(GNode *node, gpointer data)
 364 {
 365         struct connman_element *element = node->data;
 366         struct connman_driver *driver = data;
 367
 368         DBG("element %p name %s", element, element->name);
 369
 370         if (!element->driver && match_driver(element, driver) == TRUE) {
 371                 if (driver->probe(element) < 0)
 372                         return FALSE;
 373
 374                 __connman_element_lock(element);
 375                 element->driver = driver;
 376                 __connman_element_unlock(element);
 377         }
 378
 379         return FALSE;
 380 }
 381
 382 void __connman_driver_rescan(struct connman_driver *driver)
 383 {
 384         DBG("driver %p name %s", driver, driver->name);
 385
 386         if (!driver->probe)
 387                 return;
 388
 389         if (element_root != NULL)
 390                 g_node_traverse(element_root, G_PRE_ORDER,
 391                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 392 }
 393
 394 /**
 395  * connman_driver_register:
 396  * @driver: driver definition
 397  *
 398  * Register a new driver
 399  *
 400  * Returns: %0 on success
 401  */
 402 int connman_driver_register(struct connman_driver *driver)
 403 {
 404         DBG("driver %p name %s", driver, driver->name);
 405
 406         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 407                 return -EINVAL;
 408
 409         if (!driver->probe)
 410                 return -EINVAL;
 411
 412         driver_list = g_slist_insert_sorted(driver_list, driver,
 413                                                         compare_priority);
 414
 415         if (started == FALSE)
 416                 return 0;
 417
 418         if (element_root != NULL)
 419                 g_node_traverse(element_root, G_PRE_ORDER,
 420                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 421
 422         return 0;
 423 }
 424
 425 static gboolean remove_driver(GNode *node, gpointer data)
 426 {
 427         struct connman_element *element = node->data;
 428         struct connman_driver *driver = data;
 429
 430         DBG("element %p name %s", element, element->name);
 431
 432         if (element->driver == driver) {
 433                 if (driver->remove)
 434                         driver->remove(element);
 435
 436                 __connman_element_lock(element);
 437                 element->driver = NULL;
 438                 __connman_element_unlock(element);
 439         }
 440
 441         return FALSE;
 442 }
 443
 444 /**
 445  * connman_driver_unregister:
 446  * @driver: driver definition
 447  *
 448  * Remove a previously registered driver
 449  */
 450 void connman_driver_unregister(struct connman_driver *driver)
 451 {
 452         DBG("driver %p name %s", driver, driver->name);
 453
 454         driver_list = g_slist_remove(driver_list, driver);
 455
 456         if (element_root != NULL)
 457                 g_node_traverse(element_root, G_POST_ORDER,
 458                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 459 }
 460
 461 static void unregister_property(gpointer data)
 462 {
 463         struct connman_property *property = data;
 464
 465         DBG("property %p", property);
 466
 467         g_free(property->value);
 468         g_free(property);
 469 }
 470
 471 void __connman_element_initialize(struct connman_element *element)
 472 {
 473         DBG("element %p", element);
 474
 475         element->refcount = 1;
 476
 477         element->name    = NULL;
 478         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 479         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 480         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 481         element->index   = -1;
 482         element->enabled = FALSE;
 483
 484         element->configuring = FALSE;
 485
 486         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 487                                                 g_free, unregister_property);
 488 }
 489
 490 /**
 491  * connman_element_create:
 492  * @name: element name
 493  *
 494  * Allocate a new element and assign the given #name to it. If the name
 495  * is #NULL, it will be later on created based on the element type.
 496  *
 497  * Returns: a newly-allocated #connman_element structure
 498  */
 499 struct connman_element *connman_element_create(const char *name)
 500 {
 501         struct connman_element *element;
 502
 503         element = g_try_new0(struct connman_element, 1);
 504         if (element == NULL)
 505                 return NULL;
 506
 507         DBG("element %p", element);
 508
 509         __connman_element_initialize(element);
 510
 511         return element;
 512 }
 513
 514 struct connman_element *connman_element_ref(struct connman_element *element)
 515 {
 516         DBG("element %p name %s refcount %d", element, element->name,
 517                                 g_atomic_int_get(&element->refcount) + 1);
 518
 519         g_atomic_int_inc(&element->refcount);
 520
 521         return element;
 522 }
 523
 524 static void free_properties(struct connman_element *element)
 525 {
 526         DBG("element %p name %s", element, element->name);
 527
 528         __connman_element_lock(element);
 529
 530         g_hash_table_destroy(element->properties);
 531         element->properties = NULL;
 532
 533         __connman_element_unlock(element);
 534 }
 535
 536 void connman_element_unref(struct connman_element *element)
 537 {
 538         DBG("element %p name %s refcount %d", element, element->name,
 539                                 g_atomic_int_get(&element->refcount) - 1);
 540
 541         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 542                 if (element->destruct)
 543                         element->destruct(element);
 544                 free_properties(element);
 545                 g_free(element->ipv4.address);
 546                 g_free(element->ipv4.netmask);
 547                 g_free(element->ipv4.gateway);
 548                 g_free(element->ipv4.network);
 549                 g_free(element->ipv4.broadcast);
 550                 g_free(element->ipv4.nameserver);
 551                 g_free(element->devname);
 552                 g_free(element->path);
 553                 g_free(element->name);
 554                 g_free(element);
 555         }
 556 }
 557
 558 static int set_static_property(struct connman_element *element,
 559                                 const char *name, int type, const void *value)
 560 {
 561         struct connman_property *property;
 562
 563         DBG("element %p name %s", element, element->name);
 564
 565         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 566                 return -EINVAL;
 567
 568         property = g_try_new0(struct connman_property, 1);
 569         if (property == NULL)
 570                 return -ENOMEM;
 571
 572         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 573         property->type = type;
 574
 575         DBG("name %s type %d value %p", name, type, value);
 576
 577         switch (type) {
 578         case DBUS_TYPE_STRING:
 579                 property->value = g_strdup(*((const char **) value));
 580                 break;
 581         case DBUS_TYPE_BYTE:
 582                 property->value = g_try_malloc(1);
 583                 if (property->value != NULL)
 584                         memcpy(property->value, value, 1);
 585                 break;
 586         }
 587
 588         __connman_element_lock(element);
 589
 590         g_hash_table_replace(element->properties, g_strdup(name), property);
 591
 592         __connman_element_unlock(element);
 593
 594         return 0;
 595 }
 596
 597 static int set_static_array_property(struct connman_element *element,
 598                         const char *name, int type, const void *value, int len)
 599 {
 600         struct connman_property *property;
 601
 602         DBG("element %p name %s", element, element->name);
 603
 604         if (type != DBUS_TYPE_BYTE)
 605                 return -EINVAL;
 606
 607         property = g_try_new0(struct connman_property, 1);
 608         if (property == NULL)
 609                 return -ENOMEM;
 610
 611         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 612         property->type    = DBUS_TYPE_ARRAY;
 613         property->subtype = type;
 614
 615         DBG("name %s type %d value %p", name, type, value);
 616
 617         switch (type) {
 618         case DBUS_TYPE_BYTE:
 619                 property->value = g_try_malloc(len);
 620                 if (property->value != NULL) {
 621                         memcpy(property->value,
 622                                 *((const unsigned char **) value), len);
 623                         property->size = len;
 624                 }
 625                 break;
 626         }
 627
 628         __connman_element_lock(element);
 629
 630         g_hash_table_replace(element->properties, g_strdup(name), property);
 631
 632         __connman_element_unlock(element);
 633
 634         return 0;
 635 }
 636
 637 #if 0
 638 static int set_property(struct connman_element *element,
 639                                 enum connman_property_id id, const void *value)
 640 {
 641         switch (id) {
 642         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 643                 __connman_element_lock(element);
 644                 g_free(element->ipv4.address);
 645                 element->ipv4.address = g_strdup(*((const char **) value));
 646                 __connman_element_unlock(element);
 647                 break;
 648         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 649                 __connman_element_lock(element);
 650                 g_free(element->ipv4.netmask);
 651                 element->ipv4.netmask = g_strdup(*((const char **) value));
 652                 __connman_element_unlock(element);
 653                 break;
 654         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 655                 __connman_element_lock(element);
 656                 g_free(element->ipv4.gateway);
 657                 element->ipv4.gateway = g_strdup(*((const char **) value));
 658                 __connman_element_unlock(element);
 659                 break;
 660         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 661                 __connman_element_lock(element);
 662                 g_free(element->ipv4.broadcast);
 663                 element->ipv4.broadcast = g_strdup(*((const char **) value));
 664                 __connman_element_unlock(element);
 665                 break;
 666         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 667                 __connman_element_lock(element);
 668                 g_free(element->ipv4.nameserver);
 669                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 670                 __connman_element_unlock(element);
 671                 break;
 672         default:
 673                 return -EINVAL;
 674         }
 675
 676         return 0;
 677 }
 678 #endif
 679
 680 int connman_element_get_value(struct connman_element *element,
 681                                 enum connman_property_id id, void *value)
 682 {
 683         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 684                 return -EINVAL;
 685
 686         switch (id) {
 687         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 688                 if (element->ipv4.method == CONNMAN_IPV4_METHOD_UNKNOWN)
 689                         return connman_element_get_value(element->parent,
 690                                                                 id, value);
 691                 __connman_element_lock(element);
 692                 *((const char **) value) = __connman_ipv4_method2string(element->ipv4.method);
 693                 __connman_element_unlock(element);
 694                 break;
 695         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 696                 if (element->ipv4.address == NULL)
 697                         return connman_element_get_value(element->parent,
 698                                                                 id, value);
 699                 __connman_element_lock(element);
 700                 *((char **) value) = element->ipv4.address;
 701                 __connman_element_unlock(element);
 702                 break;
 703         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 704                 if (element->ipv4.netmask == NULL)
 705                         return connman_element_get_value(element->parent,
 706                                                                 id, value);
 707                 __connman_element_lock(element);
 708                 *((char **) value) = element->ipv4.netmask;
 709                 __connman_element_unlock(element);
 710                 break;
 711         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 712                 if (element->ipv4.gateway == NULL)
 713                         return connman_element_get_value(element->parent,
 714                                                                 id, value);
 715                 __connman_element_lock(element);
 716                 *((char **) value) = element->ipv4.gateway;
 717                 __connman_element_unlock(element);
 718                 break;
 719         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 720                 if (element->ipv4.broadcast == NULL)
 721                         return connman_element_get_value(element->parent,
 722                                                                 id, value);
 723                 __connman_element_lock(element);
 724                 *((char **) value) = element->ipv4.broadcast;
 725                 __connman_element_unlock(element);
 726                 break;
 727         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 728                 if (element->ipv4.nameserver == NULL)
 729                         return connman_element_get_value(element->parent,
 730                                                                 id, value);
 731                 __connman_element_lock(element);
 732                 *((char **) value) = element->ipv4.nameserver;
 733                 __connman_element_unlock(element);
 734                 break;
 735         default:
 736                 return -EINVAL;
 737         }
 738
 739         return 0;
 740 }
 741
 742 static gboolean get_static_property(struct connman_element *element,
 743                                                 const char *name, void *value)
 744 {
 745         struct connman_property *property;
 746         gboolean found = FALSE;
 747
 748         DBG("element %p name %s", element, element->name);
 749
 750         __connman_element_lock(element);
 751
 752         property = g_hash_table_lookup(element->properties, name);
 753         if (property != NULL) {
 754                 switch (property->type) {
 755                 case DBUS_TYPE_STRING:
 756                         *((char **) value) = property->value;
 757                         found = TRUE;
 758                         break;
 759                 case DBUS_TYPE_BYTE:
 760                         memcpy(value, property->value, 1);
 761                         found = TRUE;
 762                         break;
 763                 }
 764         }
 765
 766         __connman_element_unlock(element);
 767
 768         if (found == FALSE && element->parent != NULL)
 769                 return get_static_property(element->parent, name, value);
 770
 771         return found;
 772 }
 773
 774 static gboolean get_static_array_property(struct connman_element *element,
 775                         const char *name, void *value, unsigned int *len)
 776 {
 777         struct connman_property *property;
 778         gboolean found = FALSE;
 779
 780         DBG("element %p name %s", element, element->name);
 781
 782         __connman_element_lock(element);
 783
 784         property = g_hash_table_lookup(element->properties, name);
 785         if (property != NULL) {
 786                 *((char **) value) = property->value;
 787                 *len = property->size;
 788                 found = TRUE;
 789         }
 790
 791         __connman_element_unlock(element);
 792
 793         return found;
 794 }
 795
 796 #if 0
 797 static gboolean 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                 if (property->type == DBUS_TYPE_STRING)
 810                         result = g_str_equal(property->value,
 811                                                 *((const char **) value));
 812         }
 813
 814         __connman_element_unlock(element);
 815
 816         return result;
 817 }
 818 #endif
 819
 820 /**
 821  * connman_element_set_string:
 822  * @element: element structure
 823  * @key: unique identifier
 824  * @value: string value
 825  *
 826  * Set string value for specific key
 827  */
 828 int connman_element_set_string(struct connman_element *element,
 829                                         const char *key, const char *value)
 830 {
 831         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 832 }
 833
 834 /**
 835  * connman_element_get_string:
 836  * @element: element structure
 837  * @key: unique identifier
 838  *
 839  * Get string value for specific key
 840  */
 841 const char *connman_element_get_string(struct connman_element *element,
 842                                                         const char *key)
 843 {
 844         const char *value;
 845
 846         if (get_static_property(element, key, &value) == FALSE)
 847                 return NULL;
 848
 849         return value;
 850 }
 851
 852 /**
 853  * connman_element_set_uint8:
 854  * @element: element structure
 855  * @key: unique identifier
 856  * @value: integer value
 857  *
 858  * Set integer value for specific key
 859  */
 860 int connman_element_set_uint8(struct connman_element *element,
 861                                         const char *key, connman_uint8_t value)
 862 {
 863         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 864 }
 865
 866 /**
 867  * connman_element_get_uint8:
 868  * @element: element structure
 869  * @key: unique identifier
 870  *
 871  * Get integer value for specific key
 872  */
 873 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 874                                                         const char *key)
 875 {
 876         connman_uint8_t value;
 877
 878         if (get_static_property(element, key, &value) == FALSE)
 879                 return 0;
 880
 881         return value;
 882 }
 883
 884 /**
 885  * connman_element_set_blob:
 886  * @element: element structure
 887  * @key: unique identifier
 888  * @data: blob data
 889  * @size: blob size
 890  *
 891  * Set binary blob value for specific key
 892  */
 893 int connman_element_set_blob(struct connman_element *element,
 894                         const char *key, const void *data, unsigned int size)
 895 {
 896         return set_static_array_property(element, key,
 897                                                 DBUS_TYPE_BYTE, &data, size);
 898 }
 899
 900 /**
 901  * connman_element_get_blob:
 902  * @element: element structure
 903  * @key: unique identifier
 904  * @size: pointer to blob size
 905  *
 906  * Get binary blob value for specific key
 907  */
 908 const void *connman_element_get_blob(struct connman_element *element,
 909                                         const char *key, unsigned int *size)
 910 {
 911         void *value;
 912
 913         if (get_static_array_property(element, key, &value, size) == FALSE)
 914                 return NULL;
 915
 916         return value;
 917 }
 918
 919 int __connman_element_append_ipv4(struct connman_element *element,
 920                                                 DBusMessageIter *dict)
 921 {
 922         const char *method = NULL;
 923         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 924
 925         connman_element_get_value(element,
 926                                 CONNMAN_PROPERTY_ID_IPV4_METHOD, &method);
 927
 928         connman_element_get_value(element,
 929                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 930         connman_element_get_value(element,
 931                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 932         connman_element_get_value(element,
 933                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 934
 935         if (method != NULL)
 936                 connman_dbus_dict_append_variant(dict, "IPv4.Method",
 937                                                 DBUS_TYPE_STRING, &method);
 938
 939         if (address != NULL)
 940                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 941                                                 DBUS_TYPE_STRING, &address);
 942
 943         if (netmask != NULL)
 944                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 945                                                 DBUS_TYPE_STRING, &netmask);
 946
 947         if (gateway != NULL)
 948                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 949                                                 DBUS_TYPE_STRING, &gateway);
 950
 951         return 0;
 952 }
 953
 954 int __connman_element_set_ipv4(struct connman_element *element,
 955                                 const char *name, DBusMessageIter *value)
 956 {
 957         int type;
 958
 959         type = dbus_message_iter_get_arg_type(value);
 960
 961         if (g_str_equal(name, "IPv4.Method") == TRUE) {
 962                 enum connman_ipv4_method method;
 963                 const char *str;
 964
 965                 if (type != DBUS_TYPE_STRING)
 966                         return -EINVAL;
 967
 968                 dbus_message_iter_get_basic(value, &str);
 969                 method = __connman_ipv4_string2method(str);
 970                 if (method == CONNMAN_IPV4_METHOD_UNKNOWN)
 971                         return -EINVAL;
 972
 973                 if (method == element->ipv4.method)
 974                         return -EALREADY;
 975
 976                 element->ipv4.method = method;
 977
 978                 connman_element_update(element);
 979         } else if (g_str_equal(name, "IPv4.Address") == TRUE) {
 980                 const char *address;
 981
 982                 if (type != DBUS_TYPE_STRING)
 983                         return -EINVAL;
 984
 985                 dbus_message_iter_get_basic(value, &address);
 986
 987                 g_free(element->ipv4.address);
 988                 element->ipv4.address = g_strdup(address);
 989
 990                 connman_element_update(element);
 991         } else if (g_str_equal(name, "IPv4.Netmask") == TRUE) {
 992                 const char *netmask;
 993
 994                 if (type != DBUS_TYPE_STRING)
 995                         return -EINVAL;
 996
 997                 dbus_message_iter_get_basic(value, &netmask);
 998
 999                 g_free(element->ipv4.netmask);
1000                 element->ipv4.netmask = g_strdup(netmask);
1001
1002                 connman_element_update(element);
1003         } else if (g_str_equal(name, "IPv4.Gateway") == TRUE) {
1004                 const char *gateway;
1005
1006                 if (type != DBUS_TYPE_STRING)
1007                         return -EINVAL;
1008
1009                 dbus_message_iter_get_basic(value, &gateway);
1010
1011                 g_free(element->ipv4.gateway);
1012                 element->ipv4.gateway = g_strdup(gateway);
1013
1014                 connman_element_update(element);
1015         }
1016
1017         return 0;
1018 }
1019
1020 static void append_state(DBusMessageIter *entry, const char *state)
1021 {
1022         DBusMessageIter value;
1023         const char *key = "State";
1024
1025         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1026
1027         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1028                                         DBUS_TYPE_STRING_AS_STRING, &value);
1029         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1030         dbus_message_iter_close_container(entry, &value);
1031 }
1032
1033 static void emit_state_change(DBusConnection *conn, const char *state)
1034 {
1035         DBusMessage *signal;
1036         DBusMessageIter entry;
1037
1038         DBG("conn %p", conn);
1039
1040         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1041                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1042         if (signal == NULL)
1043                 return;
1044
1045         dbus_message_iter_init_append(signal, &entry);
1046
1047         append_state(&entry, state);
1048
1049         g_dbus_send_message(conn, signal);
1050 }
1051
1052 static void probe_element(struct connman_element *element)
1053 {
1054         GSList *list;
1055
1056         DBG("element %p name %s", element, element->name);
1057
1058         for (list = driver_list; list; list = list->next) {
1059                 struct connman_driver *driver = list->data;
1060
1061                 if (match_driver(element, driver) == FALSE)
1062                         continue;
1063
1064                 DBG("driver %p name %s", driver, driver->name);
1065
1066                 if (driver->probe(element) == 0) {
1067                         __connman_element_lock(element);
1068                         element->driver = driver;
1069                         __connman_element_unlock(element);
1070                         break;
1071                 }
1072         }
1073 }
1074
1075 static void register_element(gpointer data, gpointer user_data)
1076 {
1077         struct connman_element *element = data;
1078         const gchar *basepath;
1079         GNode *node;
1080
1081         __connman_element_lock(element);
1082
1083         if (element->parent) {
1084                 node = g_node_find(element_root, G_PRE_ORDER,
1085                                         G_TRAVERSE_ALL, element->parent);
1086                 basepath = element->parent->path;
1087         } else {
1088                 element->parent = element_root->data;
1089
1090                 node = element_root;
1091                 basepath = "";
1092         }
1093
1094         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1095
1096         __connman_element_unlock(element);
1097
1098         DBG("element %p path %s", element, element->path);
1099
1100         g_node_append_data(node, element);
1101
1102         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP) {
1103                 element->parent->configuring = TRUE;
1104
1105                 if (__connman_element_count(NULL,
1106                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1107                         emit_state_change(connection, "connecting");
1108         }
1109
1110         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1111                 struct connman_element *parent = element->parent;
1112
1113                 while (parent) {
1114                         parent->configuring = FALSE;
1115                         parent = parent->parent;
1116                 }
1117
1118                 if (__connman_element_count(NULL,
1119                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 1)
1120                         emit_state_change(connection, "online");
1121         }
1122
1123         emit_element_signal(connection, "ElementAdded", element);
1124
1125         if (started == FALSE)
1126                 return;
1127
1128         probe_element(element);
1129 }
1130
1131 /**
1132  * connman_element_register:
1133  * @element: the element to register
1134  * @parent: the parent to register the element with
1135  *
1136  * Register an element with the core. It will be register under the given
1137  * parent of if %NULL is provided under the root element.
1138  *
1139  * Returns: %0 on success
1140  */
1141 int connman_element_register(struct connman_element *element,
1142                                         struct connman_element *parent)
1143 {
1144         DBG("element %p name %s parent %p", element, element->name, parent);
1145
1146         if (element->devname == NULL)
1147                 element->devname = g_strdup(element->name);
1148
1149         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1150                 if (g_pattern_match_simple(device_filter,
1151                                                 element->devname) == FALSE) {
1152                         DBG("ignoring %s [%s] device", element->name,
1153                                                         element->devname);
1154                         return -EPERM;
1155                 }
1156         }
1157
1158         if (connman_element_ref(element) == NULL)
1159                 return -EINVAL;
1160
1161         __connman_element_lock(element);
1162
1163         if (element->name == NULL) {
1164                 element->name = g_strdup(type2string(element->type));
1165                 if (element->name == NULL) {
1166                         __connman_element_unlock(element);
1167                         return -EINVAL;
1168                 }
1169         }
1170
1171         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1172                 element->ipv4.method = CONNMAN_IPV4_METHOD_DHCP;
1173
1174         element->parent = parent;
1175
1176         __connman_element_unlock(element);
1177
1178         register_element(element, NULL);
1179
1180         return 0;
1181 }
1182
1183 static gboolean remove_element(GNode *node, gpointer user_data)
1184 {
1185         struct connman_element *element = node->data;
1186         struct connman_element *root = user_data;
1187
1188         DBG("element %p name %s", element, element->name);
1189
1190         if (element == root)
1191                 return FALSE;
1192
1193         if (node != NULL)
1194                 g_node_unlink(node);
1195
1196         if (element->driver) {
1197                 if (element->driver->remove)
1198                         element->driver->remove(element);
1199
1200                 __connman_element_lock(element);
1201                 element->driver = NULL;
1202                 __connman_element_unlock(element);
1203         }
1204
1205         if (node != NULL)
1206                 g_node_destroy(node);
1207
1208         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1209                 if (__connman_element_count(NULL,
1210                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1211                         emit_state_change(connection, "offline");
1212         }
1213
1214         emit_element_signal(connection, "ElementRemoved", element);
1215
1216         connman_element_unref(element);
1217
1218         return FALSE;
1219 }
1220
1221 void connman_element_unregister(struct connman_element *element)
1222 {
1223         GNode *node;
1224
1225         DBG("element %p name %s", element, element->name);
1226
1227         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1228
1229         if (node != NULL)
1230                 g_node_traverse(node, G_POST_ORDER,
1231                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1232 }
1233
1234 void connman_element_unregister_children(struct connman_element *element)
1235 {
1236         GNode *node;
1237
1238         DBG("element %p name %s", element, element->name);
1239
1240         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1241
1242         if (node != NULL)
1243                 g_node_traverse(node, G_POST_ORDER,
1244                                 G_TRAVERSE_ALL, -1, remove_element, element);
1245 }
1246
1247 static gboolean update_element(GNode *node, gpointer user_data)
1248 {
1249         struct connman_element *element = node->data;
1250
1251         DBG("element %p name %s", element, element->name);
1252
1253         if (element->driver && element->driver->update)
1254                 element->driver->update(element);
1255
1256         emit_element_signal(connection, "ElementUpdated", element);
1257
1258         return FALSE;
1259 }
1260
1261 void connman_element_update(struct connman_element *element)
1262 {
1263         GNode *node;
1264
1265         DBG("element %p name %s", element, element->name);
1266
1267         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1268
1269         if (node != NULL)
1270                 g_node_traverse(node, G_PRE_ORDER,
1271                                 G_TRAVERSE_ALL, -1, update_element, element);
1272 }
1273
1274 int connman_element_set_enabled(struct connman_element *element,
1275                                                         gboolean enabled)
1276 {
1277         if (element->enabled == enabled)
1278                 return 0;
1279
1280         element->enabled = enabled;
1281
1282         connman_element_update(element);
1283
1284         return 0;
1285 }
1286
1287 /**
1288  * connman_element_set_error:
1289  * @element: element structure
1290  * @error: error identifier
1291  *
1292  * Set error state and specific error identifier
1293  */
1294 void connman_element_set_error(struct connman_element *element,
1295                                         enum connman_element_error error)
1296 {
1297         DBG("element %p error %d", element, error);
1298
1299         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1300                 return;
1301
1302         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1303         element->error = error;
1304
1305         if (element->driver && element->driver->change)
1306                 element->driver->change(element);
1307 }
1308
1309 int __connman_element_init(DBusConnection *conn, const char *device,
1310                                                         const char *nodevice)
1311 {
1312         struct connman_element *element;
1313
1314         DBG("conn %p", conn);
1315
1316         connection = dbus_connection_ref(conn);
1317         if (connection == NULL)
1318                 return -EIO;
1319
1320         device_filter = g_strdup(device);
1321
1322         element = connman_element_create("root");
1323
1324         element->path = g_strdup("/");
1325         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1326
1327         element_root = g_node_new(element);
1328
1329         __connman_notifier_init();
1330         __connman_service_init();
1331         __connman_network_init();
1332         __connman_device_init();
1333
1334         return 0;
1335 }
1336
1337 static gboolean probe_node(GNode *node, gpointer data)
1338 {
1339         struct connman_element *element = node->data;
1340
1341         DBG("element %p name %s", element, element->name);
1342
1343         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1344                 return FALSE;
1345
1346         if (element->driver)
1347                 return FALSE;
1348
1349         probe_element(element);
1350
1351         return FALSE;
1352 }
1353
1354 void __connman_element_start(void)
1355 {
1356         DBG("");
1357
1358         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1359                                                         probe_node, NULL);
1360
1361         started = TRUE;
1362
1363         __connman_storage_init_device();
1364
1365         __connman_connection_init();
1366         __connman_ipv4_init();
1367         __connman_detect_init();
1368 }
1369
1370 void __connman_element_stop(void)
1371 {
1372         DBG("");
1373
1374         __connman_detect_cleanup();
1375         __connman_ipv4_cleanup();
1376         __connman_connection_cleanup();
1377 }
1378
1379 static gboolean free_driver(GNode *node, gpointer data)
1380 {
1381         struct connman_element *element = node->data;
1382
1383         DBG("element %p name %s", element, element->name);
1384
1385         if (element->driver) {
1386                 if (element->driver->remove)
1387                         element->driver->remove(element);
1388
1389                 __connman_element_lock(element);
1390                 element->driver = NULL;
1391                 __connman_element_unlock(element);
1392         }
1393
1394         return FALSE;
1395 }
1396
1397 static gboolean free_node(GNode *node, gpointer data)
1398 {
1399         struct connman_element *element = node->data;
1400
1401         DBG("element %p name %s", element, element->name);
1402
1403         if (g_node_depth(node) > 1)
1404                 connman_element_unregister(element);
1405
1406         return FALSE;
1407 }
1408
1409 void __connman_element_cleanup(void)
1410 {
1411         DBG("");
1412
1413         __connman_device_cleanup();
1414         __connman_network_cleanup();
1415         __connman_service_cleanup();
1416         __connman_notifier_cleanup();
1417
1418         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1419                                                         free_driver, NULL);
1420
1421         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1422                                                         free_node, NULL);
1423
1424         g_node_destroy(element_root);
1425         element_root = NULL;
1426
1427         g_free(device_filter);
1428
1429         dbus_connection_unref(connection);
1430 }