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 struct {
  44         enum connman_property_id id;
  45         int type;
  46         const char *name;
  47         const void *value;
  48 } propid_table[] = {
  49         { CONNMAN_PROPERTY_ID_IPV4_METHOD,
  50                 DBUS_TYPE_STRING, "IPv4.Method", "dhcp" },
  51         { CONNMAN_PROPERTY_ID_IPV4_ADDRESS,
  52                 DBUS_TYPE_STRING, "IPv4.Address" },
  53         { CONNMAN_PROPERTY_ID_IPV4_NETMASK,
  54                 DBUS_TYPE_STRING, "IPv4.Netmask" },
  55         { CONNMAN_PROPERTY_ID_IPV4_GATEWAY,
  56                 DBUS_TYPE_STRING, "IPv4.Gateway" },
  57         { CONNMAN_PROPERTY_ID_IPV4_BROADCAST,
  58                 DBUS_TYPE_STRING, "IPv4.Broadcast" },
  59         { CONNMAN_PROPERTY_ID_IPV4_NAMESERVER,
  60                 DBUS_TYPE_STRING, "IPv4.Nameserver" },
  61
  62         { CONNMAN_PROPERTY_ID_WIFI_SECURITY,
  63                 DBUS_TYPE_STRING, "WiFi.Security" },
  64         { CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE,
  65                 DBUS_TYPE_STRING, "WiFi.Passphrase" },
  66
  67         { }
  68 };
  69
  70 static int propid2type(enum connman_property_id id)
  71 {
  72         int i;
  73
  74         for (i = 0; propid_table[i].name; i++) {
  75                 if (propid_table[i].id == id)
  76                         return propid_table[i].type;
  77         }
  78
  79         return DBUS_TYPE_INVALID;
  80 }
  81
  82 static const char *propid2name(enum connman_property_id id)
  83 {
  84         int i;
  85
  86         for (i = 0; propid_table[i].name; i++) {
  87                 if (propid_table[i].id == id)
  88                         return propid_table[i].name;
  89         }
  90
  91         return NULL;
  92 }
  93
  94 static const char *type2string(enum connman_element_type type)
  95 {
  96         switch (type) {
  97         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  98                 return "unknown";
  99         case CONNMAN_ELEMENT_TYPE_ROOT:
 100                 return "root";
 101         case CONNMAN_ELEMENT_TYPE_PROFILE:
 102                 return "profile";
 103         case CONNMAN_ELEMENT_TYPE_DEVICE:
 104                 return "device";
 105         case CONNMAN_ELEMENT_TYPE_NETWORK:
 106                 return "network";
 107         case CONNMAN_ELEMENT_TYPE_SERVICE:
 108                 return "service";
 109         case CONNMAN_ELEMENT_TYPE_PPP:
 110                 return "ppp";
 111         case CONNMAN_ELEMENT_TYPE_IPV4:
 112                 return "ipv4";
 113         case CONNMAN_ELEMENT_TYPE_IPV6:
 114                 return "ipv6";
 115         case CONNMAN_ELEMENT_TYPE_DHCP:
 116                 return "dhcp";
 117         case CONNMAN_ELEMENT_TYPE_BOOTP:
 118                 return "bootp";
 119         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 120                 return "zeroconf";
 121         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 122                 return "connection";
 123         case CONNMAN_ELEMENT_TYPE_VENDOR:
 124                 return "vendor";
 125         }
 126
 127         return NULL;
 128 }
 129
 130 static const char *subtype2string(enum connman_element_subtype type)
 131 {
 132         switch (type) {
 133         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
 134                 return "unknown";
 135         case CONNMAN_ELEMENT_SUBTYPE_FAKE:
 136                 return "fake";
 137         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
 138                 return "ethernet";
 139         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
 140                 return "wifi";
 141         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
 142                 return "wimax";
 143         case CONNMAN_ELEMENT_SUBTYPE_CELLULAR:
 144                 return "cellular";
 145         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
 146                 return "bluetooth";
 147         }
 148
 149         return NULL;
 150 }
 151
 152 const char *__connman_element_policy2string(enum connman_element_policy policy)
 153 {
 154         switch (policy) {
 155         case CONNMAN_ELEMENT_POLICY_UNKNOWN:
 156                 return "unknown";
 157         case CONNMAN_ELEMENT_POLICY_IGNORE:
 158                 return "ignore";
 159         case CONNMAN_ELEMENT_POLICY_AUTO:
 160                 return "auto";
 161         case CONNMAN_ELEMENT_POLICY_ASK:
 162                 return "ask";
 163         }
 164
 165         return NULL;
 166 }
 167
 168 enum connman_element_policy __connman_element_string2policy(const char *policy)
 169 {
 170         if (strcasecmp(policy, "ignore") == 0)
 171                 return CONNMAN_ELEMENT_POLICY_IGNORE;
 172         else if (strcasecmp(policy, "auto") == 0)
 173                 return CONNMAN_ELEMENT_POLICY_AUTO;
 174         else if (strcasecmp(policy, "ask") == 0)
 175                 return CONNMAN_ELEMENT_POLICY_ASK;
 176         else
 177                 return CONNMAN_ELEMENT_POLICY_UNKNOWN;
 178 }
 179
 180 const char *__connman_ipv4_method2string(enum connman_ipv4_method method)
 181 {
 182         switch (method) {
 183         case CONNMAN_IPV4_METHOD_UNKNOWN:
 184                 return "unknown";
 185         case CONNMAN_IPV4_METHOD_OFF:
 186                 return "off";
 187         case CONNMAN_IPV4_METHOD_STATIC:
 188                 return "static";
 189         case CONNMAN_IPV4_METHOD_DHCP:
 190                 return "dhcp";
 191         }
 192
 193         return "unknown";
 194 }
 195
 196 enum connman_ipv4_method __connman_ipv4_string2method(const char *method)
 197 {
 198         if (strcasecmp(method, "off") == 0)
 199                 return CONNMAN_IPV4_METHOD_OFF;
 200         else if (strcasecmp(method, "static") == 0)
 201                 return CONNMAN_IPV4_METHOD_STATIC;
 202         else if (strcasecmp(method, "dhcp") == 0)
 203                 return CONNMAN_IPV4_METHOD_DHCP;
 204         else
 205                 return CONNMAN_IPV4_METHOD_UNKNOWN;
 206 }
 207
 208 static void append_property(DBusMessageIter *dict,
 209                                 struct connman_property *property)
 210 {
 211         if (property->value == NULL)
 212                 return;
 213
 214         switch (property->type) {
 215         case DBUS_TYPE_ARRAY:
 216                 connman_dbus_dict_append_array(dict, property->name,
 217                         property->subtype, &property->value, property->size);
 218                 break;
 219         case DBUS_TYPE_STRING:
 220                 connman_dbus_dict_append_variant(dict, property->name,
 221                                         property->type, &property->value);
 222                 break;
 223         default:
 224                 connman_dbus_dict_append_variant(dict, property->name,
 225                                         property->type, property->value);
 226                 break;
 227         }
 228 }
 229
 230 static void add_common_properties(struct connman_element *element,
 231                                                 DBusMessageIter *dict)
 232 {
 233         const char *address = NULL, *netmask = NULL, *gateway = NULL;
 234         GSList *list;
 235
 236         connman_element_get_value(element,
 237                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 238         connman_element_get_value(element,
 239                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 240         connman_element_get_value(element,
 241                                 CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
 242
 243         if (element->priority > 0)
 244                 connman_dbus_dict_append_variant(dict, "Priority",
 245                                         DBUS_TYPE_UINT16, &element->priority);
 246
 247         if (address != NULL)
 248                 connman_dbus_dict_append_variant(dict, "IPv4.Address",
 249                                                 DBUS_TYPE_STRING, &address);
 250         if (netmask != NULL)
 251                 connman_dbus_dict_append_variant(dict, "IPv4.Netmask",
 252                                                 DBUS_TYPE_STRING, &netmask);
 253         if (gateway != NULL)
 254                 connman_dbus_dict_append_variant(dict, "IPv4.Gateway",
 255                                                 DBUS_TYPE_STRING, &gateway);
 256
 257         if (element->wifi.security != NULL) {
 258                 const char *passphrase = "";
 259
 260                 connman_dbus_dict_append_variant(dict, "WiFi.Security",
 261                                 DBUS_TYPE_STRING, &element->wifi.security);
 262
 263                 if (element->wifi.passphrase != NULL)
 264                         passphrase = element->wifi.passphrase;
 265
 266                 connman_dbus_dict_append_variant(dict, "WiFi.Passphrase",
 267                                 DBUS_TYPE_STRING, &passphrase);
 268         }
 269
 270         __connman_element_lock(element);
 271
 272         for (list = element->properties; list; list = list->next) {
 273                 struct connman_property *property = list->data;
 274
 275                 append_property(dict, property);
 276         }
 277
 278         __connman_element_unlock(element);
 279 }
 280
 281 #if 0
 282 static void set_common_property(struct connman_element *element,
 283                                 const char *name, DBusMessageIter *value)
 284 {
 285         GSList *list;
 286
 287         if (g_str_equal(name, "Priority") == TRUE) {
 288                 dbus_message_iter_get_basic(value, &element->priority);
 289                 return;
 290         }
 291
 292         __connman_element_lock(element);
 293
 294         for (list = element->properties; list; list = list->next) {
 295                 struct connman_property *property = list->data;
 296                 const char *str;
 297
 298                 if (g_str_equal(property->name, name) == FALSE)
 299                         continue;
 300
 301                 if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC)
 302                         continue;
 303
 304                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
 305
 306                 if (property->type == DBUS_TYPE_STRING) {
 307                         dbus_message_iter_get_basic(value, &str);
 308                         g_free(property->value);
 309                         property->value = g_strdup(str);
 310                 } else
 311                         property->value = NULL;
 312         }
 313
 314         __connman_element_unlock(element);
 315 }
 316 #endif
 317
 318 static void emit_element_signal(DBusConnection *conn, const char *member,
 319                                         struct connman_element *element)
 320 {
 321         DBusMessage *signal;
 322
 323         if (__connman_debug_enabled() == FALSE)
 324                 return;
 325
 326         DBG("conn %p member %s", conn, member);
 327
 328         if (element == NULL)
 329                 return;
 330
 331         signal = dbus_message_new_signal(element->path,
 332                                         CONNMAN_DEBUG_INTERFACE, member);
 333         if (signal == NULL)
 334                 return;
 335
 336         g_dbus_send_message(conn, signal);
 337 }
 338
 339 static void emit_enabled_signal(DBusConnection *conn,
 340                                         struct connman_element *element)
 341 {
 342         DBusMessage *signal;
 343         DBusMessageIter entry, value;
 344         const char *iface, *key;
 345
 346         DBG("conn %p", conn);
 347
 348         if (element == NULL)
 349                 return;
 350
 351         switch (element->type) {
 352         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 353                 iface = CONNMAN_CONNECTION_INTERFACE;
 354                 key = "Default";
 355                 break;
 356         default:
 357                 return;
 358         }
 359
 360         signal = dbus_message_new_signal(element->path,
 361                                                 iface, "PropertyChanged");
 362         if (signal == NULL)
 363                 return;
 364
 365         dbus_message_iter_init_append(signal, &entry);
 366
 367         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 368
 369         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 370                                         DBUS_TYPE_BOOLEAN_AS_STRING, &value);
 371         dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN,
 372                                                         &element->enabled);
 373         dbus_message_iter_close_container(&entry, &value);
 374
 375         g_dbus_send_message(conn, signal);
 376 }
 377
 378 static DBusMessage *do_enable(DBusConnection *conn,
 379                                         DBusMessage *msg, void *data)
 380 {
 381         struct connman_element *element = data;
 382
 383         DBG("conn %p", conn);
 384
 385         if (element->enabled == TRUE)
 386                 return __connman_error_failed(msg);
 387
 388         if (element->driver && element->driver->enable) {
 389                 DBG("Calling enable callback");
 390                 if (element->driver->enable(element) < 0)
 391                         return __connman_error_failed(msg);
 392         }
 393
 394         element->enabled = TRUE;
 395
 396         emit_enabled_signal(connection, element);
 397
 398         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 399 }
 400
 401 static DBusMessage *do_disable(DBusConnection *conn,
 402                                         DBusMessage *msg, void *data)
 403 {
 404         struct connman_element *element = data;
 405
 406         DBG("conn %p", conn);
 407
 408         if (element->enabled == FALSE)
 409                 return __connman_error_failed(msg);
 410
 411         if (element->driver && element->driver->disable) {
 412                 DBG("Calling disable callback");
 413                 if (element->driver->disable(element) < 0)
 414                         return __connman_error_failed(msg);
 415         }
 416
 417         element->enabled = FALSE;
 418
 419         emit_enabled_signal(connection, element);
 420
 421         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 422 }
 423
 424 static DBusMessage *connection_get_properties(DBusConnection *conn,
 425                                         DBusMessage *msg, void *data)
 426 {
 427         struct connman_element *element = data;
 428         DBusMessage *reply;
 429         DBusMessageIter array, dict;
 430         const char *str;
 431
 432         DBG("conn %p", conn);
 433
 434         reply = dbus_message_new_method_return(msg);
 435         if (reply == NULL)
 436                 return NULL;
 437
 438         dbus_message_iter_init_append(reply, &array);
 439
 440         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 441                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 442                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 443                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 444
 445         str = subtype2string(element->subtype);
 446         if (str != NULL)
 447                 connman_dbus_dict_append_variant(&dict, "Type",
 448                                                 DBUS_TYPE_STRING, &str);
 449
 450         if (element->devname != NULL)
 451                 connman_dbus_dict_append_variant(&dict, "Interface",
 452                                         DBUS_TYPE_STRING, &element->devname);
 453
 454         if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIFI ||
 455                         element->subtype == CONNMAN_ELEMENT_SUBTYPE_WIMAX)
 456                 connman_dbus_dict_append_variant(&dict, "Strength",
 457                                         DBUS_TYPE_BYTE, &element->strength);
 458
 459         connman_dbus_dict_append_variant(&dict, "Default",
 460                                         DBUS_TYPE_BOOLEAN, &element->enabled);
 461
 462         add_common_properties(element, &dict);
 463
 464         dbus_message_iter_close_container(&array, &dict);
 465
 466         return reply;
 467 }
 468
 469 static DBusMessage *connection_set_property(DBusConnection *conn,
 470                                         DBusMessage *msg, void *data)
 471 {
 472         struct connman_element *element = data;
 473         DBusMessageIter iter, value;
 474         const char *name;
 475
 476         DBG("conn %p", conn);
 477
 478         if (dbus_message_iter_init(msg, &iter) == FALSE)
 479                 return __connman_error_invalid_arguments(msg);
 480
 481         dbus_message_iter_get_basic(&iter, &name);
 482         dbus_message_iter_next(&iter);
 483         dbus_message_iter_recurse(&iter, &value);
 484
 485         if (__connman_security_check_privileges(msg) < 0)
 486                 return __connman_error_permission_denied(msg);
 487
 488         if (g_str_equal(name, "Default") == TRUE) {
 489                 dbus_bool_t enabled;
 490
 491                 dbus_message_iter_get_basic(&value, &enabled);
 492
 493                 if (enabled == TRUE)
 494                         return do_enable(conn, msg, element);
 495                 else
 496                         return do_disable(conn, msg, element);
 497         }
 498
 499         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 500 }
 501
 502 static GDBusMethodTable connection_methods[] = {
 503         { "GetProperties", "",   "a{sv}", connection_get_properties },
 504         { "SetProperty",   "sv", "",      connection_set_property   },
 505         { },
 506 };
 507
 508 static GDBusSignalTable element_signals[] = {
 509         { "PropertyChanged", "sv" },
 510         { },
 511 };
 512
 513 struct foreach_data {
 514         enum connman_element_type type;
 515         element_cb_t callback;
 516         gpointer user_data;
 517 };
 518
 519 static gboolean foreach_callback(GNode *node, gpointer user_data)
 520 {
 521         struct connman_element *element = node->data;
 522         struct foreach_data *data = user_data;
 523
 524         DBG("element %p name %s", element, element->name);
 525
 526         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 527                 return FALSE;
 528
 529         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 530                                         data->type != element->type)
 531                 return FALSE;
 532
 533         if (data->callback)
 534                 data->callback(element, data->user_data);
 535
 536         return FALSE;
 537 }
 538
 539 void __connman_element_foreach(struct connman_element *element,
 540                                 enum connman_element_type type,
 541                                 element_cb_t callback, gpointer user_data)
 542 {
 543         struct foreach_data data = { type, callback, user_data };
 544         GNode *node;
 545
 546         DBG("");
 547
 548         if (element != NULL) {
 549                 node = g_node_find(element_root, G_PRE_ORDER,
 550                                                 G_TRAVERSE_ALL, element);
 551                 if (node == NULL)
 552                         return;
 553         } else
 554                 node = element_root;
 555
 556         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 557                                                 foreach_callback, &data);
 558 }
 559
 560 struct append_filter {
 561         enum connman_element_type type;
 562         DBusMessageIter *iter;
 563 };
 564
 565 static gboolean append_path(GNode *node, gpointer user_data)
 566 {
 567         struct connman_element *element = node->data;
 568         struct append_filter *filter = user_data;
 569
 570         DBG("element %p name %s", element, element->name);
 571
 572         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 573                 return FALSE;
 574
 575         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 576                                         filter->type != element->type)
 577                 return FALSE;
 578
 579         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 580                         __connman_device_has_driver(element->device) == FALSE)
 581                 return FALSE;
 582
 583         dbus_message_iter_append_basic(filter->iter,
 584                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 585
 586         return FALSE;
 587 }
 588
 589 void __connman_element_list(struct connman_element *element,
 590                                         enum connman_element_type type,
 591                                                         DBusMessageIter *iter)
 592 {
 593         struct append_filter filter = { type, iter };
 594         GNode *node;
 595
 596         DBG("");
 597
 598         if (element != NULL) {
 599                 node = g_node_find(element_root, G_PRE_ORDER,
 600                                                 G_TRAVERSE_ALL, element);
 601                 if (node == NULL)
 602                         return;
 603         } else
 604                 node = element_root;
 605
 606         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 607                                                 append_path, &filter);
 608 }
 609
 610 struct count_data {
 611         enum connman_element_type type;
 612         int count;
 613 };
 614
 615 static gboolean count_element(GNode *node, gpointer user_data)
 616 {
 617         struct connman_element *element = node->data;
 618         struct count_data *data = user_data;
 619
 620         DBG("element %p name %s", element, element->name);
 621
 622         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 623                 return FALSE;
 624
 625         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 626                                         data->type != element->type)
 627                 return FALSE;
 628
 629         data->count++;
 630
 631         return FALSE;
 632 }
 633
 634 int __connman_element_count(struct connman_element *element,
 635                                         enum connman_element_type type)
 636 {
 637         struct count_data data = { type, 0 };
 638         GNode *node;
 639
 640         DBG("");
 641
 642         if (element != NULL) {
 643                 node = g_node_find(element_root, G_PRE_ORDER,
 644                                                 G_TRAVERSE_ALL, element);
 645                 if (node == NULL)
 646                         return 0;
 647         } else
 648                 node = element_root;
 649
 650         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 651                                                 count_element, &data);
 652
 653         return data.count;
 654 }
 655
 656 static gint compare_priority(gconstpointer a, gconstpointer b)
 657 {
 658         const struct connman_driver *driver1 = a;
 659         const struct connman_driver *driver2 = b;
 660
 661         return driver2->priority - driver1->priority;
 662 }
 663
 664 static gboolean match_driver(struct connman_element *element,
 665                                         struct connman_driver *driver)
 666 {
 667         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 668                 return FALSE;
 669
 670         if (element->type != driver->type &&
 671                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 672                 return FALSE;
 673
 674         if (element->subtype == driver->subtype ||
 675                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 676                 return TRUE;
 677
 678         return FALSE;
 679 }
 680
 681 static void enable_element(struct connman_element *element)
 682 {
 683         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 684                 return;
 685
 686         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 687                 return;
 688
 689         if (element->driver && element->driver->enable) {
 690                 if (element->driver->enable(element) == 0) {
 691                         element->enabled = TRUE;
 692                         emit_enabled_signal(connection, element);
 693                 }
 694         }
 695 }
 696
 697 static gboolean probe_driver(GNode *node, gpointer data)
 698 {
 699         struct connman_element *element = node->data;
 700         struct connman_driver *driver = data;
 701
 702         DBG("element %p name %s", element, element->name);
 703
 704         if (!element->driver && match_driver(element, driver) == TRUE) {
 705                 if (driver->probe(element) < 0)
 706                         return FALSE;
 707
 708                 __connman_element_lock(element);
 709                 element->driver = driver;
 710                 __connman_element_unlock(element);
 711
 712                 enable_element(element);
 713         }
 714
 715         return FALSE;
 716 }
 717
 718 void __connman_driver_rescan(struct connman_driver *driver)
 719 {
 720         DBG("driver %p name %s", driver, driver->name);
 721
 722         if (!driver->probe)
 723                 return;
 724
 725         if (element_root != NULL)
 726                 g_node_traverse(element_root, G_PRE_ORDER,
 727                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 728 }
 729
 730 /**
 731  * connman_driver_register:
 732  * @driver: driver definition
 733  *
 734  * Register a new driver
 735  *
 736  * Returns: %0 on success
 737  */
 738 int connman_driver_register(struct connman_driver *driver)
 739 {
 740         DBG("driver %p name %s", driver, driver->name);
 741
 742         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 743                 return -EINVAL;
 744
 745         if (!driver->probe)
 746                 return -EINVAL;
 747
 748         driver_list = g_slist_insert_sorted(driver_list, driver,
 749                                                         compare_priority);
 750
 751         if (started == FALSE)
 752                 return 0;
 753
 754         if (element_root != NULL)
 755                 g_node_traverse(element_root, G_PRE_ORDER,
 756                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 757
 758         return 0;
 759 }
 760
 761 static void disable_element(struct connman_element *element)
 762 {
 763         if (element->policy != CONNMAN_ELEMENT_POLICY_AUTO)
 764                 return;
 765
 766         if (element->enabled == FALSE)
 767                 return;
 768
 769         if (element->driver && element->driver->disable) {
 770                 if (element->driver->disable(element) == 0) {
 771                         element->enabled = FALSE;
 772                         emit_enabled_signal(connection, element);
 773                 }
 774         }
 775 }
 776
 777 static gboolean remove_driver(GNode *node, gpointer data)
 778 {
 779         struct connman_element *element = node->data;
 780         struct connman_driver *driver = data;
 781
 782         DBG("element %p name %s", element, element->name);
 783
 784         if (element->driver == driver) {
 785                 disable_element(element);
 786
 787                 if (driver->remove)
 788                         driver->remove(element);
 789
 790                 __connman_element_lock(element);
 791                 element->driver = NULL;
 792                 __connman_element_unlock(element);
 793         }
 794
 795         return FALSE;
 796 }
 797
 798 /**
 799  * connman_driver_unregister:
 800  * @driver: driver definition
 801  *
 802  * Remove a previously registered driver
 803  */
 804 void connman_driver_unregister(struct connman_driver *driver)
 805 {
 806         DBG("driver %p name %s", driver, driver->name);
 807
 808         driver_list = g_slist_remove(driver_list, driver);
 809
 810         if (element_root != NULL)
 811                 g_node_traverse(element_root, G_POST_ORDER,
 812                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 813 }
 814
 815 /**
 816  * connman_element_create:
 817  * @name: element name
 818  *
 819  * Allocate a new element and assign the given #name to it. If the name
 820  * is #NULL, it will be later on created based on the element type.
 821  *
 822  * Returns: a newly-allocated #connman_element structure
 823  */
 824 struct connman_element *connman_element_create(const char *name)
 825 {
 826         struct connman_element *element;
 827
 828         element = g_try_new0(struct connman_element, 1);
 829         if (element == NULL)
 830                 return NULL;
 831
 832         DBG("element %p", element);
 833
 834         element->refcount = 1;
 835
 836         element->name    = g_strdup(name);
 837         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 838         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 839         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 840         element->policy  = CONNMAN_ELEMENT_POLICY_AUTO;
 841         element->index   = -1;
 842         element->enabled = FALSE;
 843
 844         return element;
 845 }
 846
 847 struct connman_element *connman_element_ref(struct connman_element *element)
 848 {
 849         DBG("element %p name %s refcount %d", element, element->name,
 850                                 g_atomic_int_get(&element->refcount) + 1);
 851
 852         g_atomic_int_inc(&element->refcount);
 853
 854         return element;
 855 }
 856
 857 static void free_properties(struct connman_element *element)
 858 {
 859         GSList *list;
 860
 861         DBG("element %p name %s", element, element->name);
 862
 863         __connman_element_lock(element);
 864
 865         for (list = element->properties; list; list = list->next) {
 866                 struct connman_property *property = list->data;
 867
 868                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
 869                         g_free(property->value);
 870
 871                 g_free(property->name);
 872                 g_free(property);
 873         }
 874
 875         g_slist_free(element->properties);
 876
 877         element->properties = NULL;
 878
 879         __connman_element_unlock(element);
 880 }
 881
 882 void connman_element_unref(struct connman_element *element)
 883 {
 884         DBG("element %p name %s refcount %d", element, element->name,
 885                                 g_atomic_int_get(&element->refcount) - 1);
 886
 887         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 888                 if (element->destruct)
 889                         element->destruct(element);
 890                 free_properties(element);
 891                 g_free(element->ipv4.address);
 892                 g_free(element->ipv4.netmask);
 893                 g_free(element->ipv4.gateway);
 894                 g_free(element->ipv4.network);
 895                 g_free(element->ipv4.broadcast);
 896                 g_free(element->ipv4.nameserver);
 897                 g_free(element->devname);
 898                 g_free(element->devpath);
 899                 g_free(element->path);
 900                 g_free(element->name);
 901                 g_free(element);
 902         }
 903 }
 904
 905 int connman_element_add_static_property(struct connman_element *element,
 906                                 const char *name, int type, const void *value)
 907 {
 908         struct connman_property *property;
 909
 910         DBG("element %p name %s", element, element->name);
 911
 912         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 913                 return -EINVAL;
 914
 915         property = g_try_new0(struct connman_property, 1);
 916         if (property == NULL)
 917                 return -ENOMEM;
 918
 919         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 920         property->id    = CONNMAN_PROPERTY_ID_INVALID;
 921         property->name  = g_strdup(name);
 922         property->type  = type;
 923
 924         DBG("name %s type %d value %p", name, type, value);
 925
 926         switch (type) {
 927         case DBUS_TYPE_STRING:
 928                 property->value = g_strdup(*((const char **) value));
 929                 break;
 930         case DBUS_TYPE_BYTE:
 931                 property->value = g_try_malloc(1);
 932                 if (property->value != NULL)
 933                         memcpy(property->value, value, 1);
 934                 break;
 935         }
 936
 937         __connman_element_lock(element);
 938         element->properties = g_slist_append(element->properties, property);
 939         __connman_element_unlock(element);
 940
 941         return 0;
 942 }
 943
 944 static void emit_property_changed(DBusConnection *conn,
 945                                 struct connman_element *element,
 946                                 const char *name, int type, const void *data)
 947 {
 948         DBusMessage *signal;
 949         DBusMessageIter entry, value;
 950         const char *iface, *sig;
 951
 952         DBG("conn %p", conn);
 953
 954         switch (element->type) {
 955         case CONNMAN_ELEMENT_TYPE_CONNECTION:
 956                 iface = CONNMAN_CONNECTION_INTERFACE;
 957                 break;
 958         default:
 959                 return;
 960         }
 961
 962         signal = dbus_message_new_signal(element->path,
 963                                                 iface, "PropertyChanged");
 964         if (signal == NULL)
 965                 return;
 966
 967         dbus_message_iter_init_append(signal, &entry);
 968
 969         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &name);
 970
 971         switch (type) {
 972         case DBUS_TYPE_STRING:
 973                 sig = DBUS_TYPE_STRING_AS_STRING;
 974                 break;
 975         case DBUS_TYPE_BYTE:
 976                 sig = DBUS_TYPE_BYTE_AS_STRING;
 977                 break;
 978         default:
 979                 sig = DBUS_TYPE_VARIANT_AS_STRING;
 980                 break;
 981         }
 982
 983         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 984                                                         sig, &value);
 985         dbus_message_iter_append_basic(&value, type, data);
 986         dbus_message_iter_close_container(&entry, &value);
 987
 988         g_dbus_send_message(conn, signal);
 989 }
 990
 991 int connman_element_set_static_property(struct connman_element *element,
 992                                 const char *name, int type, const void *value)
 993 {
 994         GSList *list;
 995
 996         DBG("element %p name %s", element, element->name);
 997
 998         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 999                 return -EINVAL;
1000
1001         __connman_element_lock(element);
1002
1003         for (list = element->properties; list; list = list->next) {
1004                 struct connman_property *property = list->data;
1005
1006                 if (g_str_equal(property->name, name) == FALSE)
1007                         continue;
1008
1009                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1010                         continue;
1011
1012                 property->type = type;
1013                 g_free(property->value);
1014
1015                 switch (type) {
1016                 case DBUS_TYPE_STRING:
1017                         property->value = g_strdup(*((const char **) value));
1018                         break;
1019                 case DBUS_TYPE_BYTE:
1020                         property->value = g_try_malloc(1);
1021                         if (property->value != NULL)
1022                                 memcpy(property->value, value, 1);
1023                         break;
1024                 }
1025         }
1026
1027         __connman_element_unlock(element);
1028
1029         emit_property_changed(connection, element, name, type, value);
1030
1031         return 0;
1032 }
1033
1034 int connman_element_add_static_array_property(struct connman_element *element,
1035                         const char *name, int type, const void *value, int len)
1036 {
1037         struct connman_property *property;
1038
1039         DBG("element %p name %s", element, element->name);
1040
1041         if (type != DBUS_TYPE_BYTE)
1042                 return -EINVAL;
1043
1044         property = g_try_new0(struct connman_property, 1);
1045         if (property == NULL)
1046                 return -ENOMEM;
1047
1048         property->flags   = CONNMAN_PROPERTY_FLAG_STATIC;
1049         property->id      = CONNMAN_PROPERTY_ID_INVALID;
1050         property->name    = g_strdup(name);
1051         property->type    = DBUS_TYPE_ARRAY;
1052         property->subtype = type;
1053
1054         DBG("name %s type %d value %p", name, type, value);
1055
1056         switch (type) {
1057         case DBUS_TYPE_BYTE:
1058                 property->value = g_try_malloc(len);
1059                 if (property->value != NULL) {
1060                         memcpy(property->value,
1061                                 *((const unsigned char **) value), len);
1062                         property->size = len;
1063                 }
1064                 break;
1065         }
1066
1067         __connman_element_lock(element);
1068         element->properties = g_slist_append(element->properties, property);
1069         __connman_element_unlock(element);
1070
1071         return 0;
1072 }
1073
1074 static void *get_reference_value(struct connman_element *element,
1075                                                 enum connman_property_id id)
1076 {
1077         GSList *list;
1078
1079         DBG("element %p name %s", element, element->name);
1080
1081         for (list = element->properties; list; list = list->next) {
1082                 struct connman_property *property = list->data;
1083
1084                 if (property->id != id)
1085                         continue;
1086
1087                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1088                         return property->value;
1089         }
1090
1091         if (element->parent == NULL)
1092                 return NULL;
1093
1094         return get_reference_value(element->parent, id);
1095 }
1096
1097 static void set_reference_properties(struct connman_element *element)
1098 {
1099         GSList *list;
1100
1101         DBG("element %p name %s", element, element->name);
1102
1103         for (list = element->properties; list; list = list->next) {
1104                 struct connman_property *property = list->data;
1105
1106                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_REFERENCE))
1107                         continue;
1108
1109                 property->value = get_reference_value(element->parent,
1110                                                                 property->id);
1111         }
1112 }
1113
1114 static struct connman_property *create_property(struct connman_element *element,
1115                                                 enum connman_property_id id)
1116 {
1117         struct connman_property *property;
1118         GSList *list;
1119
1120         DBG("element %p name %s", element, element->name);
1121
1122         __connman_element_lock(element);
1123
1124         for (list = element->properties; list; list = list->next) {
1125                 property = list->data;
1126
1127                 if (property->id == id)
1128                         goto unlock;
1129         }
1130
1131         property = g_try_new0(struct connman_property, 1);
1132         if (property == NULL)
1133                 goto unlock;
1134
1135         property->flags = CONNMAN_PROPERTY_FLAG_REFERENCE;
1136         property->id    = id;
1137         property->name  = g_strdup(propid2name(id));
1138         property->type  = propid2type(id);
1139
1140         if (property->name == NULL) {
1141                 g_free(property);
1142                 property = NULL;
1143                 goto unlock;
1144         }
1145
1146         element->properties = g_slist_append(element->properties, property);
1147
1148 unlock:
1149         __connman_element_unlock(element);
1150
1151         return property;
1152 }
1153
1154 static void create_default_properties(struct connman_element *element)
1155 {
1156         struct connman_property *property;
1157         int i;
1158
1159         DBG("element %p name %s", element, element->name);
1160
1161         for (i = 0; propid_table[i].name; i++) {
1162                 DBG("property %s", propid_table[i].name);
1163
1164                 property = create_property(element, propid_table[i].id);
1165
1166                 property->flags &= ~CONNMAN_PROPERTY_FLAG_REFERENCE;
1167
1168                 if (propid_table[i].type != DBUS_TYPE_STRING)
1169                         continue;
1170
1171                 if (propid_table[i].value)
1172                         property->value = g_strdup(propid_table[i].value);
1173                 else
1174                         property->value = g_strdup("");
1175         }
1176 }
1177
1178 static int define_properties_valist(struct connman_element *element,
1179                                                                 va_list args)
1180 {
1181         enum connman_property_id id;
1182
1183         DBG("element %p name %s", element, element->name);
1184
1185         id = va_arg(args, enum connman_property_id);
1186
1187         while (id != CONNMAN_PROPERTY_ID_INVALID) {
1188
1189                 DBG("property %d", id);
1190
1191                 create_property(element, id);
1192
1193                 id = va_arg(args, enum connman_property_id);
1194         }
1195
1196         return 0;
1197 }
1198
1199 /**
1200  * connman_element_define_properties:
1201  * @element: an element
1202  * @varargs: list of property identifiers
1203  *
1204  * Define the valid properties for an element.
1205  *
1206  * Returns: %0 on success
1207  */
1208 int connman_element_define_properties(struct connman_element *element, ...)
1209 {
1210         va_list args;
1211         int err;
1212
1213         DBG("element %p name %s", element, element->name);
1214
1215         va_start(args, element);
1216
1217         err = define_properties_valist(element, args);
1218
1219         va_end(args);
1220
1221         return err;
1222 }
1223
1224 int connman_element_create_property(struct connman_element *element,
1225                                                 const char *name, int type)
1226 {
1227         return -EIO;
1228 }
1229
1230 int connman_element_set_property(struct connman_element *element,
1231                                 enum connman_property_id id, const void *value)
1232 {
1233         switch (id) {
1234         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1235                 __connman_element_lock(element);
1236                 g_free(element->ipv4.address);
1237                 element->ipv4.address = g_strdup(*((const char **) value));
1238                 __connman_element_unlock(element);
1239                 break;
1240         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1241                 __connman_element_lock(element);
1242                 g_free(element->ipv4.netmask);
1243                 element->ipv4.netmask = g_strdup(*((const char **) value));
1244                 __connman_element_unlock(element);
1245                 break;
1246         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1247                 __connman_element_lock(element);
1248                 g_free(element->ipv4.gateway);
1249                 element->ipv4.gateway = g_strdup(*((const char **) value));
1250                 __connman_element_unlock(element);
1251                 break;
1252         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1253                 __connman_element_lock(element);
1254                 g_free(element->ipv4.broadcast);
1255                 element->ipv4.broadcast = g_strdup(*((const char **) value));
1256                 __connman_element_unlock(element);
1257                 break;
1258         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1259                 __connman_element_lock(element);
1260                 g_free(element->ipv4.nameserver);
1261                 element->ipv4.nameserver = g_strdup(*((const char **) value));
1262                 __connman_element_unlock(element);
1263                 break;
1264         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1265                 __connman_element_lock(element);
1266                 g_free(element->wifi.security);
1267                 element->wifi.security = g_strdup(*((const char **) value));
1268                 __connman_element_unlock(element);
1269                 break;
1270         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1271                 __connman_element_lock(element);
1272                 g_free(element->wifi.passphrase);
1273                 element->wifi.passphrase = g_strdup(*((const char **) value));
1274                 __connman_element_unlock(element);
1275                 break;
1276         default:
1277                 return -EINVAL;
1278         }
1279
1280         return 0;
1281 }
1282
1283 int connman_element_get_value(struct connman_element *element,
1284                                 enum connman_property_id id, void *value)
1285 {
1286         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1287                 return -EINVAL;
1288
1289         switch (id) {
1290         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
1291                 if (element->ipv4.address == NULL)
1292                         return connman_element_get_value(element->parent,
1293                                                                 id, value);
1294                 __connman_element_lock(element);
1295                 *((char **) value) = element->ipv4.address;
1296                 __connman_element_unlock(element);
1297                 break;
1298         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
1299                 if (element->ipv4.netmask == NULL)
1300                         return connman_element_get_value(element->parent,
1301                                                                 id, value);
1302                 __connman_element_lock(element);
1303                 *((char **) value) = element->ipv4.netmask;
1304                 __connman_element_unlock(element);
1305                 break;
1306         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
1307                 if (element->ipv4.gateway == NULL)
1308                         return connman_element_get_value(element->parent,
1309                                                                 id, value);
1310                 __connman_element_lock(element);
1311                 *((char **) value) = element->ipv4.gateway;
1312                 __connman_element_unlock(element);
1313                 break;
1314         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
1315                 if (element->ipv4.broadcast == NULL)
1316                         return connman_element_get_value(element->parent,
1317                                                                 id, value);
1318                 __connman_element_lock(element);
1319                 *((char **) value) = element->ipv4.broadcast;
1320                 __connman_element_unlock(element);
1321                 break;
1322         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
1323                 if (element->ipv4.nameserver == NULL)
1324                         return connman_element_get_value(element->parent,
1325                                                                 id, value);
1326                 __connman_element_lock(element);
1327                 *((char **) value) = element->ipv4.nameserver;
1328                 __connman_element_unlock(element);
1329                 break;
1330         case CONNMAN_PROPERTY_ID_WIFI_SECURITY:
1331                 if (element->wifi.security == NULL)
1332                         return connman_element_get_value(element->parent,
1333                                                                 id, value);
1334                 __connman_element_lock(element);
1335                 *((char **) value) = element->wifi.security;
1336                 __connman_element_unlock(element);
1337                 break;
1338         case CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE:
1339                 if (element->wifi.passphrase == NULL)
1340                         return connman_element_get_value(element->parent,
1341                                                                 id, value);
1342                 __connman_element_lock(element);
1343                 *((char **) value) = element->wifi.passphrase;
1344                 __connman_element_unlock(element);
1345                 break;
1346         default:
1347                 return -EINVAL;
1348         }
1349
1350         return 0;
1351 }
1352
1353 gboolean connman_element_get_static_property(struct connman_element *element,
1354                                                 const char *name, void *value)
1355 {
1356         GSList *list;
1357         gboolean found = FALSE;
1358
1359         DBG("element %p name %s", element, element->name);
1360
1361         __connman_element_lock(element);
1362
1363         for (list = element->properties; list; list = list->next) {
1364                 struct connman_property *property = list->data;
1365
1366                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1367                         continue;
1368
1369                 if (g_str_equal(property->name, name) == TRUE) {
1370                         switch (property->type) {
1371                         case DBUS_TYPE_STRING:
1372                                 *((char **) value) = property->value;
1373                                 found = TRUE;
1374                                 break;
1375                         }
1376                         break;
1377                 }
1378         }
1379
1380         __connman_element_unlock(element);
1381
1382         return found;
1383 }
1384
1385 gboolean connman_element_get_static_array_property(struct connman_element *element,
1386                                         const char *name, void *value, int *len)
1387 {
1388         GSList *list;
1389         gboolean found = FALSE;
1390
1391         DBG("element %p name %s", element, element->name);
1392
1393         __connman_element_lock(element);
1394
1395         for (list = element->properties; list; list = list->next) {
1396                 struct connman_property *property = list->data;
1397
1398                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1399                         continue;
1400
1401                 if (g_str_equal(property->name, name) == TRUE) {
1402                         *((char **) value) = property->value;
1403                         *len = property->size;
1404                         found = TRUE;
1405                         break;
1406                 }
1407         }
1408
1409         __connman_element_unlock(element);
1410
1411         return found;
1412 }
1413
1414 gboolean connman_element_match_static_property(struct connman_element *element,
1415                                         const char *name, const void *value)
1416 {
1417         GSList *list;
1418         gboolean result = FALSE;
1419
1420         DBG("element %p name %s", element, element->name);
1421
1422         __connman_element_lock(element);
1423
1424         for (list = element->properties; list; list = list->next) {
1425                 struct connman_property *property = list->data;
1426
1427                 if (!(property->flags & CONNMAN_PROPERTY_FLAG_STATIC))
1428                         continue;
1429
1430                 if (g_str_equal(property->name, name) == FALSE)
1431                         continue;
1432
1433                 if (property->type == DBUS_TYPE_STRING)
1434                         result = g_str_equal(property->value,
1435                                                 *((const char **) value));
1436
1437                 if (result == TRUE)
1438                         break;
1439         }
1440
1441         __connman_element_unlock(element);
1442
1443         return result;
1444 }
1445
1446 static void append_connections(DBusMessageIter *entry)
1447 {
1448         DBusMessageIter value, iter;
1449         const char *key = "Connections";
1450
1451         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1452
1453         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1454                 DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_OBJECT_PATH_AS_STRING,
1455                                                                 &value);
1456
1457         dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY,
1458                                 DBUS_TYPE_OBJECT_PATH_AS_STRING, &iter);
1459         __connman_element_list(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION, &iter);
1460         dbus_message_iter_close_container(&value, &iter);
1461
1462         dbus_message_iter_close_container(entry, &value);
1463 }
1464
1465 static void emit_connections_signal(DBusConnection *conn)
1466 {
1467         DBusMessage *signal;
1468         DBusMessageIter entry;
1469
1470         DBG("conn %p", conn);
1471
1472         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1473                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1474         if (signal == NULL)
1475                 return;
1476
1477         dbus_message_iter_init_append(signal, &entry);
1478
1479         append_connections(&entry);
1480
1481         g_dbus_send_message(conn, signal);
1482 }
1483
1484 static void append_state(DBusMessageIter *entry, const char *state)
1485 {
1486         DBusMessageIter value;
1487         const char *key = "State";
1488
1489         dbus_message_iter_append_basic(entry, DBUS_TYPE_STRING, &key);
1490
1491         dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT,
1492                                         DBUS_TYPE_STRING_AS_STRING, &value);
1493         dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &state);
1494         dbus_message_iter_close_container(entry, &value);
1495 }
1496
1497 static void emit_state_change(DBusConnection *conn, const char *state)
1498 {
1499         DBusMessage *signal;
1500         DBusMessageIter entry;
1501
1502         DBG("conn %p", conn);
1503
1504         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
1505                                 CONNMAN_MANAGER_INTERFACE, "PropertyChanged");
1506         if (signal == NULL)
1507                 return;
1508
1509         dbus_message_iter_init_append(signal, &entry);
1510
1511         append_state(&entry, state);
1512
1513         g_dbus_send_message(conn, signal);
1514 }
1515
1516 static void set_signal_strength(struct connman_element *connection)
1517 {
1518         struct connman_element *element = connection;
1519
1520         while (element != NULL) {
1521                 if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1522                         connection->strength = element->strength;
1523                         break;
1524                 }
1525
1526                 element = element->parent;
1527         }
1528 }
1529
1530 static void probe_element(struct connman_element *element)
1531 {
1532         GSList *list;
1533
1534         DBG("element %p name %s", element, element->name);
1535
1536         for (list = driver_list; list; list = list->next) {
1537                 struct connman_driver *driver = list->data;
1538
1539                 if (match_driver(element, driver) == FALSE)
1540                         continue;
1541
1542                 DBG("driver %p name %s", driver, driver->name);
1543
1544                 if (driver->probe(element) == 0) {
1545                         __connman_element_lock(element);
1546                         element->driver = driver;
1547                         __connman_element_unlock(element);
1548
1549                         enable_element(element);
1550                         break;
1551                 }
1552         }
1553 }
1554
1555 static void register_element(gpointer data, gpointer user_data)
1556 {
1557         struct connman_element *element = data;
1558         const gchar *basepath;
1559         GNode *node;
1560
1561         __connman_element_lock(element);
1562
1563         if (element->parent) {
1564                 node = g_node_find(element_root, G_PRE_ORDER,
1565                                         G_TRAVERSE_ALL, element->parent);
1566                 basepath = element->parent->path;
1567
1568                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
1569                         element->subtype = element->parent->subtype;
1570         } else {
1571                 element->parent = element_root->data;
1572
1573                 node = element_root;
1574                 basepath = "";
1575         }
1576
1577         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1578
1579         set_reference_properties(element);
1580
1581         __connman_element_unlock(element);
1582
1583         DBG("element %p path %s", element, element->path);
1584
1585         __connman_element_load(element);
1586
1587         g_node_append_data(node, element);
1588
1589         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1590                 if (g_dbus_register_interface(connection, element->path,
1591                                         CONNMAN_CONNECTION_INTERFACE,
1592                                         connection_methods, element_signals,
1593                                         NULL, element, NULL) == FALSE)
1594                         connman_error("Failed to register %s connection",
1595                                                                 element->path);
1596                 else {
1597                         set_signal_strength(element);
1598                         emit_connections_signal(connection);
1599                         emit_state_change(connection, "online");
1600                 }
1601         }
1602
1603         emit_element_signal(connection, "ElementAdded", element);
1604
1605         __connman_element_store(element);
1606
1607         if (started == FALSE)
1608                 return;
1609
1610         probe_element(element);
1611 }
1612
1613 /**
1614  * connman_element_register:
1615  * @element: the element to register
1616  * @parent: the parent to register the element with
1617  *
1618  * Register an element with the core. It will be register under the given
1619  * parent of if %NULL is provided under the root element.
1620  *
1621  * Returns: %0 on success
1622  */
1623 int connman_element_register(struct connman_element *element,
1624                                         struct connman_element *parent)
1625 {
1626         DBG("element %p name %s parent %p", element, element->name, parent);
1627
1628         if (element->devname == NULL)
1629                 element->devname = g_strdup(element->name);
1630
1631         if (device_filter && element->type == CONNMAN_ELEMENT_TYPE_DEVICE) {
1632                 if (g_pattern_match_simple(device_filter,
1633                                                 element->devname) == FALSE) {
1634                         DBG("ignoring %s [%s] device", element->name,
1635                                                         element->devname);
1636                         return -EPERM;
1637                 }
1638         }
1639
1640         if (connman_element_ref(element) == NULL)
1641                 return -EINVAL;
1642
1643         __connman_element_lock(element);
1644
1645         if (element->name == NULL) {
1646                 element->name = g_strdup(type2string(element->type));
1647                 if (element->name == NULL) {
1648                         __connman_element_unlock(element);
1649                         return -EINVAL;
1650                 }
1651         }
1652
1653         element->parent = parent;
1654
1655         __connman_element_unlock(element);
1656
1657         register_element(element, NULL);
1658
1659         return 0;
1660 }
1661
1662 static gboolean remove_element(GNode *node, gpointer user_data)
1663 {
1664         struct connman_element *element = node->data;
1665         struct connman_element *root = user_data;
1666
1667         DBG("element %p name %s", element, element->name);
1668
1669         if (element == root)
1670                 return FALSE;
1671
1672         if (node != NULL)
1673                 g_node_unlink(node);
1674
1675         if (element->driver) {
1676                 disable_element(element);
1677
1678                 if (element->driver->remove)
1679                         element->driver->remove(element);
1680
1681                 __connman_element_lock(element);
1682                 element->driver = NULL;
1683                 __connman_element_unlock(element);
1684         }
1685
1686         if (node != NULL)
1687                 g_node_destroy(node);
1688
1689         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION) {
1690                 if (__connman_element_count(NULL,
1691                                         CONNMAN_ELEMENT_TYPE_CONNECTION) == 0)
1692                         emit_state_change(connection, "offline");
1693                 emit_connections_signal(connection);
1694
1695                 g_dbus_unregister_interface(connection, element->path,
1696                                                 CONNMAN_CONNECTION_INTERFACE);
1697         }
1698
1699         emit_element_signal(connection, "ElementRemoved", element);
1700
1701         connman_element_unref(element);
1702
1703         return FALSE;
1704 }
1705
1706 void connman_element_unregister(struct connman_element *element)
1707 {
1708         GNode *node;
1709
1710         DBG("element %p name %s", element, element->name);
1711
1712         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1713
1714         if (node != NULL)
1715                 g_node_traverse(node, G_POST_ORDER,
1716                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1717 }
1718
1719 void connman_element_unregister_children(struct connman_element *element)
1720 {
1721         GNode *node;
1722
1723         DBG("element %p name %s", element, element->name);
1724
1725         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1726
1727         if (node != NULL)
1728                 g_node_traverse(node, G_POST_ORDER,
1729                                 G_TRAVERSE_ALL, -1, remove_element, element);
1730 }
1731
1732 static gboolean update_element(GNode *node, gpointer user_data)
1733 {
1734         struct connman_element *element = node->data;
1735         struct connman_element *root = user_data;
1736
1737         DBG("element %p name %s", element, element->name);
1738
1739         if (element->driver && element->driver->update)
1740                 element->driver->update(element);
1741
1742         if (element->type == CONNMAN_ELEMENT_TYPE_CONNECTION &&
1743                                 root->type == CONNMAN_ELEMENT_TYPE_NETWORK) {
1744                 if (element->strength != root->strength) {
1745                         element->strength = root->strength;
1746                         emit_property_changed(connection, element, "Strength",
1747                                         DBUS_TYPE_BYTE, &element->strength);
1748                 }
1749         }
1750
1751         emit_element_signal(connection, "ElementUpdated", element);
1752
1753         return FALSE;
1754 }
1755
1756 void connman_element_update(struct connman_element *element)
1757 {
1758         GNode *node;
1759
1760         DBG("element %p name %s", element, element->name);
1761
1762         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1763
1764         if (node != NULL)
1765                 g_node_traverse(node, G_PRE_ORDER,
1766                                 G_TRAVERSE_ALL, -1, update_element, element);
1767 }
1768
1769 int connman_element_set_enabled(struct connman_element *element,
1770                                                         gboolean enabled)
1771 {
1772         if (element->enabled == enabled)
1773                 return 0;
1774
1775         element->enabled = enabled;
1776
1777         emit_enabled_signal(connection, element);
1778
1779         return 0;
1780 }
1781
1782 int __connman_element_init(DBusConnection *conn, const char *device)
1783 {
1784         struct connman_element *element;
1785
1786         DBG("conn %p", conn);
1787
1788         connection = dbus_connection_ref(conn);
1789         if (connection == NULL)
1790                 return -EIO;
1791
1792         device_filter = g_strdup(device);
1793
1794         element = connman_element_create("root");
1795
1796         element->path = g_strdup("/");
1797         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1798
1799         create_default_properties(element);
1800
1801         element_root = g_node_new(element);
1802
1803         __connman_device_init();
1804         __connman_network_init();
1805
1806         return 0;
1807 }
1808
1809 static gboolean probe_node(GNode *node, gpointer data)
1810 {
1811         struct connman_element *element = node->data;
1812
1813         DBG("element %p name %s", element, element->name);
1814
1815         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1816                 return FALSE;
1817
1818         if (element->driver)
1819                 return FALSE;
1820
1821         probe_element(element);
1822
1823         return FALSE;
1824 }
1825
1826 void __connman_element_start(void)
1827 {
1828         DBG("");
1829
1830         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1831                                                         probe_node, NULL);
1832
1833         started = TRUE;
1834
1835         __connman_detect_init();
1836 }
1837
1838 void __connman_element_stop(void)
1839 {
1840         DBG("");
1841
1842         __connman_detect_cleanup();
1843 }
1844
1845 static gboolean free_driver(GNode *node, gpointer data)
1846 {
1847         struct connman_element *element = node->data;
1848
1849         DBG("element %p name %s", element, element->name);
1850
1851         if (element->driver) {
1852                 disable_element(element);
1853
1854                 if (element->driver->remove)
1855                         element->driver->remove(element);
1856
1857                 __connman_element_lock(element);
1858                 element->driver = NULL;
1859                 __connman_element_unlock(element);
1860         }
1861
1862         return FALSE;
1863 }
1864
1865 static gboolean free_node(GNode *node, gpointer data)
1866 {
1867         struct connman_element *element = node->data;
1868
1869         DBG("element %p name %s", element, element->name);
1870
1871         if (g_node_depth(node) > 1)
1872                 connman_element_unregister(element);
1873
1874         return FALSE;
1875 }
1876
1877 void __connman_element_cleanup(void)
1878 {
1879         DBG("");
1880
1881         __connman_network_cleanup();
1882         __connman_device_cleanup();
1883
1884         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1885                                                         free_driver, NULL);
1886
1887         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1888                                                         free_node, NULL);
1889
1890         g_node_destroy(element_root);
1891         element_root = NULL;
1892
1893         g_free(device_filter);
1894
1895         dbus_connection_unref(connection);
1896 }