vcs.maemo.org Git - connman/blob - src/network.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 <string.h>
  27
  28 #include <gdbus.h>
  29
  30 #include "connman.h"
  31
  32 struct connman_network {
  33         struct connman_element element;
  34         enum connman_network_type type;
  35         enum connman_network_protocol protocol;
  36         connman_bool_t connected;
  37         connman_bool_t remember;
  38         connman_uint8_t strength;
  39         char *identifier;
  40         char *name;
  41         char *node;
  42
  43         struct connman_network_driver *driver;
  44         void *driver_data;
  45
  46         connman_bool_t registered;
  47
  48         struct connman_device *device;
  49
  50         struct {
  51                 void *ssid;
  52                 int ssid_len;
  53                 char *mode;
  54                 char *security;
  55                 char *passphrase;
  56         } wifi;
  57 };
  58
  59 static DBusMessage *get_properties(DBusConnection *conn,
  60                                         DBusMessage *msg, void *data)
  61 {
  62         struct connman_network *network = data;
  63         DBusMessage *reply;
  64         DBusMessageIter array, dict;
  65
  66         DBG("conn %p", conn);
  67
  68         reply = dbus_message_new_method_return(msg);
  69         if (reply == NULL)
  70                 return NULL;
  71
  72         dbus_message_iter_init_append(reply, &array);
  73
  74         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
  75                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
  76                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
  77                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
  78
  79         if (network->device) {
  80                 const char *path = connman_device_get_path(network->device);
  81                 if (path != NULL)
  82                         connman_dbus_dict_append_variant(&dict, "Device",
  83                                                 DBUS_TYPE_OBJECT_PATH, &path);
  84         }
  85
  86         if (network->name != NULL)
  87                 connman_dbus_dict_append_variant(&dict, "Name",
  88                                         DBUS_TYPE_STRING, &network->name);
  89
  90         connman_dbus_dict_append_variant(&dict, "Connected",
  91                                 DBUS_TYPE_BOOLEAN, &network->connected);
  92
  93         connman_dbus_dict_append_variant(&dict, "Remember",
  94                                 DBUS_TYPE_BOOLEAN, &network->remember);
  95
  96         if (network->strength > 0)
  97                 connman_dbus_dict_append_variant(&dict, "Strength",
  98                                         DBUS_TYPE_BYTE, &network->strength);
  99
 100         if (network->wifi.ssid != NULL && network->wifi.ssid_len > 0)
 101                 connman_dbus_dict_append_array(&dict, "WiFi.SSID",
 102                                 DBUS_TYPE_BYTE, &network->wifi.ssid,
 103                                                 network->wifi.ssid_len);
 104
 105         if (network->wifi.mode != NULL)
 106                 connman_dbus_dict_append_variant(&dict, "WiFi.Mode",
 107                                 DBUS_TYPE_STRING, &network->wifi.mode);
 108
 109         if (network->wifi.security != NULL)
 110                 connman_dbus_dict_append_variant(&dict, "WiFi.Security",
 111                                 DBUS_TYPE_STRING, &network->wifi.security);
 112
 113         if (network->wifi.passphrase != NULL)
 114                 connman_dbus_dict_append_variant(&dict, "WiFi.Passphrase",
 115                                 DBUS_TYPE_STRING, &network->wifi.passphrase);
 116
 117         dbus_message_iter_close_container(&array, &dict);
 118
 119         return reply;
 120 }
 121
 122 static DBusMessage *set_property(DBusConnection *conn,
 123                                         DBusMessage *msg, void *data)
 124 {
 125         struct connman_network *network = data;
 126         DBusMessageIter iter, value;
 127         const char *name;
 128
 129         DBG("conn %p", conn);
 130
 131         if (dbus_message_iter_init(msg, &iter) == FALSE)
 132                 return __connman_error_invalid_arguments(msg);
 133
 134         dbus_message_iter_get_basic(&iter, &name);
 135         dbus_message_iter_next(&iter);
 136         dbus_message_iter_recurse(&iter, &value);
 137
 138         if (__connman_security_check_privileges(msg) < 0)
 139                 return __connman_error_permission_denied(msg);
 140
 141         if (g_str_equal(name, "Remember") == TRUE) {
 142                 connman_bool_t remember;
 143
 144                 dbus_message_iter_get_basic(&value, &remember);
 145
 146                 if (network->remember == remember)
 147                         return __connman_error_invalid_arguments(msg);
 148         } else if (g_str_equal(name, "WiFi.Passphrase") == TRUE) {
 149                 const char *passphrase;
 150
 151                 dbus_message_iter_get_basic(&value, &passphrase);
 152
 153                 g_free(network->wifi.passphrase);
 154                 network->wifi.passphrase = g_strdup(passphrase);
 155         }
 156
 157         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 158 }
 159
 160 static DBusMessage *do_connect(DBusConnection *conn,
 161                                         DBusMessage *msg, void *data)
 162 {
 163         struct connman_network *network = data;
 164         int err;
 165
 166         DBG("conn %p", conn);
 167
 168         if (network->driver && network->driver->connect) {
 169                 err = network->driver->connect(network);
 170                 if (err < 0 && err != -EINPROGRESS)
 171                         return __connman_error_failed(msg);
 172         }
 173
 174         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 175 }
 176
 177 static DBusMessage *do_disconnect(DBusConnection *conn,
 178                                         DBusMessage *msg, void *data)
 179 {
 180         struct connman_network *network = data;
 181         int err;
 182
 183         DBG("conn %p", conn);
 184
 185         if (network->driver && network->driver->disconnect) {
 186                 err = network->driver->disconnect(network);
 187                 if (err < 0 && err != -EINPROGRESS)
 188                         return __connman_error_failed(msg);
 189         }
 190
 191         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 192 }
 193
 194 static GDBusMethodTable network_methods[] = {
 195         { "GetProperties", "",   "a{sv}", get_properties },
 196         { "SetProperty",   "sv", "",      set_property   },
 197         { "Connect",       "",   "",      do_connect     },
 198         { "Disconnect",    "",   "",      do_disconnect  },
 199         { },
 200 };
 201
 202 static GDBusSignalTable network_signals[] = {
 203         { "PropertyChanged", "sv" },
 204         { },
 205 };
 206
 207 static DBusConnection *connection;
 208
 209 static void emit_networks_signal(void)
 210 {
 211 }
 212
 213 static int register_interface(struct connman_element *element)
 214 {
 215         struct connman_network *network = element->network;
 216
 217         DBG("element %p name %s", element, element->name);
 218
 219         if (g_dbus_register_interface(connection, element->path,
 220                                         CONNMAN_NETWORK_INTERFACE,
 221                                         network_methods, network_signals,
 222                                         NULL, network, NULL) == FALSE) {
 223                 connman_error("Failed to register %s network", element->path);
 224                 return -EIO;
 225         }
 226
 227         network->registered = TRUE;
 228
 229         emit_networks_signal();
 230
 231         return 0;
 232 }
 233
 234 static void unregister_interface(struct connman_element *element)
 235 {
 236         struct connman_network * network = element->network;
 237
 238         DBG("element %p name %s", element, element->name);
 239
 240         network->registered = FALSE;
 241
 242         emit_networks_signal();
 243
 244         g_dbus_unregister_interface(connection, element->path,
 245                                                 CONNMAN_NETWORK_INTERFACE);
 246 }
 247
 248 connman_bool_t __connman_network_has_driver(struct connman_network *network)
 249 {
 250         if (network == NULL || network->driver == NULL)
 251                 return FALSE;
 252
 253         return network->registered;
 254 }
 255
 256 static GSList *driver_list = NULL;
 257
 258 static gint compare_priority(gconstpointer a, gconstpointer b)
 259 {
 260         const struct connman_network_driver *driver1 = a;
 261         const struct connman_network_driver *driver2 = b;
 262
 263         return driver2->priority - driver1->priority;
 264 }
 265
 266 /**
 267  * connman_network_driver_register:
 268  * @driver: network driver definition
 269  *
 270  * Register a new network driver
 271  *
 272  * Returns: %0 on success
 273  */
 274 int connman_network_driver_register(struct connman_network_driver *driver)
 275 {
 276         DBG("driver %p name %s", driver, driver->name);
 277
 278         driver_list = g_slist_insert_sorted(driver_list, driver,
 279                                                         compare_priority);
 280
 281         return 0;
 282 }
 283
 284 /**
 285  * connman_network_driver_unregister:
 286  * @driver: network driver definition
 287  *
 288  * Remove a previously registered network driver
 289  */
 290 void connman_network_driver_unregister(struct connman_network_driver *driver)
 291 {
 292         DBG("driver %p name %s", driver, driver->name);
 293
 294         driver_list = g_slist_remove(driver_list, driver);
 295 }
 296
 297 static void network_destruct(struct connman_element *element)
 298 {
 299         struct connman_network *network = element->network;
 300
 301         DBG("element %p name %s", element, element->name);
 302
 303         g_free(network->wifi.ssid);
 304         g_free(network->wifi.mode);
 305         g_free(network->wifi.security);
 306         g_free(network->wifi.passphrase);
 307
 308         g_free(network->node);
 309         g_free(network->name);
 310         g_free(network->identifier);
 311 }
 312
 313 /**
 314  * connman_network_create:
 315  * @identifier: network identifier (for example an unqiue name)
 316  *
 317  * Allocate a new network and assign the #identifier to it.
 318  *
 319  * Returns: a newly-allocated #connman_network structure
 320  */
 321 struct connman_network *connman_network_create(const char *identifier,
 322                                                 enum connman_network_type type)
 323 {
 324         struct connman_network *network;
 325
 326         DBG("identifier %s type %d", identifier, type);
 327
 328         network = g_try_new0(struct connman_network, 1);
 329         if (network == NULL)
 330                 return NULL;
 331
 332         DBG("network %p", network);
 333
 334         network->element.refcount = 1;
 335
 336         network->element.name = g_strdup(identifier);
 337         network->element.type = CONNMAN_ELEMENT_TYPE_NETWORK;
 338         network->element.index = -1;
 339
 340         switch (type) {
 341         case CONNMAN_NETWORK_TYPE_UNKNOWN:
 342         case CONNMAN_NETWORK_TYPE_VENDOR:
 343                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 344                 break;
 345         case CONNMAN_NETWORK_TYPE_WIFI:
 346                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 347                 break;
 348         case CONNMAN_NETWORK_TYPE_BLUETOOTH_PAN:
 349         case CONNMAN_NETWORK_TYPE_BLUETOOTH_DUN:
 350                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH;
 351                 break;
 352         case CONNMAN_NETWORK_TYPE_HSO:
 353                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_CELLULAR;
 354                 break;
 355         }
 356
 357         network->element.network = network;
 358         network->element.destruct = network_destruct;
 359
 360         network->type = type;
 361         network->identifier = g_strdup(identifier);
 362
 363         return network;
 364 }
 365
 366 /**
 367  * connman_network_ref:
 368  * @network: network structure
 369  *
 370  * Increase reference counter of  network
 371  */
 372 struct connman_network *connman_network_ref(struct connman_network *network)
 373 {
 374         if (connman_element_ref(&network->element) == NULL)
 375                 return NULL;
 376
 377         return network;
 378 }
 379
 380 /**
 381  * connman_network_unref:
 382  * @network: network structure
 383  *
 384  * Decrease reference counter of network
 385  */
 386 void connman_network_unref(struct connman_network *network)
 387 {
 388         connman_element_unref(&network->element);
 389 }
 390
 391 /**
 392  * connman_network_get_identifier:
 393  * @network: network structure
 394  *
 395  * Get identifier of network
 396  */
 397 const char *connman_network_get_identifier(struct connman_network *network)
 398 {
 399         return network->identifier;
 400 }
 401
 402 /**
 403  * connman_network_get_path:
 404  * @network: network structure
 405  *
 406  * Get path name of network
 407  */
 408 const char *connman_network_get_path(struct connman_network *network)
 409 {
 410         return network->element.path;
 411 }
 412
 413 /**
 414  * connman_network_set_index:
 415  * @network: network structure
 416  * @index: index number
 417  *
 418  * Set index number of network
 419  */
 420 void connman_network_set_index(struct connman_network *network, int index)
 421 {
 422         network->element.index = index;
 423 }
 424
 425 /**
 426  * connman_network_get_index:
 427  * @network: network structure
 428  *
 429  * Get index number of network
 430  */
 431 int connman_network_get_index(struct connman_network *network)
 432 {
 433         return network->element.index;
 434 }
 435
 436 /**
 437  * connman_network_set_protocol:
 438  * @network: network structure
 439  * @protocol: network protocol
 440  *
 441  * Change protocol of network
 442  */
 443 void connman_network_set_protocol(struct connman_network *network,
 444                                         enum connman_network_protocol protocol)
 445 {
 446         network->protocol = protocol;
 447 }
 448
 449 /**
 450  * connman_network_set_connected:
 451  * @network: network structure
 452  * @connected: connected state
 453  *
 454  * Change connected state of network
 455  */
 456 int connman_network_set_connected(struct connman_network *network,
 457                                                 connman_bool_t connected)
 458 {
 459         DBG("network %p connected %d", network, connected);
 460
 461         if (network->connected == connected)
 462                 return -EALREADY;
 463
 464         network->connected = connected;
 465
 466         if (connected == TRUE) {
 467                 struct connman_element *element;
 468                 enum connman_element_type type = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 469
 470                 switch (network->protocol) {
 471                 case CONNMAN_NETWORK_PROTOCOL_UNKNOWN:
 472                         return 0;
 473                 case CONNMAN_NETWORK_PROTOCOL_IP:
 474                         type = CONNMAN_ELEMENT_TYPE_DHCP;
 475                         break;
 476                 case CONNMAN_NETWORK_PROTOCOL_PPP:
 477                         type = CONNMAN_ELEMENT_TYPE_PPP;
 478                         break;
 479                 }
 480
 481                 element = connman_element_create(NULL);
 482                 if (element != NULL) {
 483                         element->type    = type;
 484                         element->subtype = network->element.subtype;
 485                         element->index   = network->element.index;
 486
 487                         if (connman_element_register(element,
 488                                                         &network->element) < 0)
 489                                 connman_element_unref(element);
 490                 }
 491         } else
 492                 connman_element_unregister_children(&network->element);
 493
 494         return 0;
 495 }
 496
 497 /**
 498  * connman_network_set_string:
 499  * @network: network structure
 500  * @key: unique identifier
 501  * @value: string value
 502  *
 503  * Set string value for specific key
 504  */
 505 int connman_network_set_string(struct connman_network *network,
 506                                         const char *key, const char *value)
 507 {
 508         DBG("network %p key %s value %s", network, key, value);
 509
 510         if (g_str_equal(key, "Name") == TRUE) {
 511                 g_free(network->name);
 512                 network->name = g_strdup(value);
 513         } else if (g_str_equal(key, "Node") == TRUE) {
 514                 g_free(network->node);
 515                 network->node = g_strdup(value);
 516         } else if (g_str_equal(key, "WiFi.Mode") == TRUE) {
 517                 g_free(network->wifi.mode);
 518                 network->wifi.mode = g_strdup(value);
 519         } else if (g_str_equal(key, "WiFi.Security") == TRUE) {
 520                 g_free(network->wifi.security);
 521                 network->wifi.security = g_strdup(value);
 522         }
 523
 524         return 0;
 525 }
 526
 527 /**
 528  * connman_network_get_string:
 529  * @network: network structure
 530  * @key: unique identifier
 531  *
 532  * Get string value for specific key
 533  */
 534 const char *connman_network_get_string(struct connman_network *network,
 535                                                         const char *key)
 536 {
 537         DBG("network %p key %s", network);
 538
 539         if (g_str_equal(key, "Name") == TRUE)
 540                 return network->name;
 541         else if (g_str_equal(key, "Node") == TRUE)
 542                 return network->node;
 543         else if (g_str_equal(key, "WiFi.Mode") == TRUE)
 544                 return network->wifi.mode;
 545         else if (g_str_equal(key, "WiFi.Security") == TRUE)
 546                 return network->wifi.security;
 547
 548         return NULL;
 549 }
 550
 551 /**
 552  * connman_network_set_uint8:
 553  * @network: network structure
 554  * @key: unique identifier
 555  * @value: integer value
 556  *
 557  * Set integer value for specific key
 558  */
 559 int connman_network_set_uint8(struct connman_network *network,
 560                                         const char *key, connman_uint8_t value)
 561 {
 562         DBG("network %p key %s value %d", network, key, value);
 563
 564         if (g_str_equal(key, "Strength") == TRUE)
 565                 network->strength = value;
 566
 567         return 0;
 568 }
 569
 570 /**
 571  * connman_network_set_blob:
 572  * @network: network structure
 573  * @key: unique identifier
 574  * @data: blob data
 575  * @size: blob size
 576  *
 577  * Set binary blob value for specific key
 578  */
 579 int connman_network_set_blob(struct connman_network *network,
 580                         const char *key, const void *data, unsigned int size)
 581 {
 582         DBG("network %p key %s size %d", network, key, size);
 583
 584         if (g_str_equal(key, "WiFi.SSID") == TRUE) {
 585                 g_free(network->wifi.ssid);
 586                 network->wifi.ssid = g_try_malloc(size);
 587                 if (network->wifi.ssid != NULL) {
 588                         memcpy(network->wifi.ssid, data, size);
 589                         network->wifi.ssid_len = size;
 590                 } else
 591                         network->wifi.ssid_len = 0;
 592         }
 593
 594         return 0;
 595 }
 596
 597 void __connman_network_set_device(struct connman_network *network,
 598                                         struct connman_device *device)
 599 {
 600         network->device = device;
 601 }
 602
 603 /**
 604  * connman_network_get_device:
 605  * @network: network structure
 606  *
 607  * Get parent device of network
 608  */
 609 struct connman_device *connman_network_get_device(struct connman_network *network)
 610 {
 611         return network->device;
 612 }
 613
 614 /**
 615  * connman_network_get_data:
 616  * @network: network structure
 617  *
 618  * Get private network data pointer
 619  */
 620 void *connman_network_get_data(struct connman_network *network)
 621 {
 622         return network->driver_data;
 623 }
 624
 625 /**
 626  * connman_network_set_data:
 627  * @network: network structure
 628  * @data: data pointer
 629  *
 630  * Set private network data pointer
 631  */
 632 void connman_network_set_data(struct connman_network *network, void *data)
 633 {
 634         network->driver_data = data;
 635 }
 636
 637 static gboolean match_driver(struct connman_network *network,
 638                                         struct connman_network_driver *driver)
 639 {
 640         if (network->type == driver->type ||
 641                         driver->type == CONNMAN_NETWORK_TYPE_UNKNOWN)
 642                 return TRUE;
 643
 644         return FALSE;
 645 }
 646
 647 static int network_probe(struct connman_element *element)
 648 {
 649         struct connman_network *network = element->network;
 650         GSList *list;
 651         int err;
 652
 653         DBG("element %p name %s", element, element->name);
 654
 655         if (network == NULL)
 656                 return -ENODEV;
 657
 658         for (list = driver_list; list; list = list->next) {
 659                 struct connman_network_driver *driver = list->data;
 660
 661                 if (match_driver(network, driver) == FALSE)
 662                         continue;
 663
 664                 DBG("driver %p name %s", driver, driver->name);
 665
 666                 if (driver->probe(network) == 0) {
 667                         network->driver = driver;
 668                         break;
 669                 }
 670         }
 671
 672         if (network->driver == NULL)
 673                 return -ENODEV;
 674
 675         err = register_interface(element);
 676         if (err < 0) {
 677                 if (network->driver->remove)
 678                         network->driver->remove(network);
 679                 return err;
 680         }
 681
 682         return 0;
 683 }
 684
 685 static void network_remove(struct connman_element *element)
 686 {
 687         struct connman_network *network = element->network;
 688
 689         DBG("element %p name %s", element, element->name);
 690
 691         if (network == NULL)
 692                 return;
 693
 694         if (network->driver == NULL)
 695                 return;
 696
 697         unregister_interface(element);
 698
 699         if (network->driver->remove)
 700                 network->driver->remove(network);
 701 }
 702
 703 static struct connman_driver network_driver = {
 704         .name           = "network",
 705         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 706         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
 707         .probe          = network_probe,
 708         .remove         = network_remove,
 709 };
 710
 711 static int network_load(struct connman_network *network)
 712 {
 713         DBG("network %p", network);
 714
 715         return 0;
 716 }
 717
 718 static int network_save(struct connman_network *network)
 719 {
 720         DBG("network %p", network);
 721
 722         return 0;
 723 }
 724
 725 static struct connman_storage network_storage = {
 726         .name           = "network",
 727         .priority       = CONNMAN_STORAGE_PRIORITY_LOW,
 728         .network_load   = network_load,
 729         .network_save   = network_save,
 730 };
 731
 732 int __connman_network_init(void)
 733 {
 734         DBG("");
 735
 736         connection = connman_dbus_get_connection();
 737
 738         if (connman_storage_register(&network_storage) < 0)
 739                 connman_error("Failed to register network storage");
 740
 741         return connman_driver_register(&network_driver);
 742 }
 743
 744 void __connman_network_cleanup(void)
 745 {
 746         DBG("");
 747
 748         connman_driver_unregister(&network_driver);
 749
 750         connman_storage_unregister(&network_storage);
 751
 752         dbus_connection_unref(connection);
 753 }