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_uint8_t strength;
  38         char *identifier;
  39         char *name;
  40         char *node;
  41
  42         struct connman_network_driver *driver;
  43         void *driver_data;
  44
  45         struct connman_device *device;
  46
  47         struct {
  48                 void *ssid;
  49                 int ssid_len;
  50                 char *mode;
  51                 char *security;
  52                 char *passphrase;
  53         } wifi;
  54 };
  55
  56 static DBusMessage *get_properties(DBusConnection *conn,
  57                                         DBusMessage *msg, void *data)
  58 {
  59         struct connman_network *network = data;
  60         DBusMessage *reply;
  61         DBusMessageIter array, dict;
  62
  63         DBG("conn %p", conn);
  64
  65         reply = dbus_message_new_method_return(msg);
  66         if (reply == NULL)
  67                 return NULL;
  68
  69         dbus_message_iter_init_append(reply, &array);
  70
  71         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
  72                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
  73                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
  74                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
  75
  76         if (network->device) {
  77                 const char *path = connman_device_get_path(network->device);
  78                 if (path != NULL)
  79                         connman_dbus_dict_append_variant(&dict, "Device",
  80                                                 DBUS_TYPE_OBJECT_PATH, &path);
  81         }
  82
  83         if (network->name != NULL)
  84                 connman_dbus_dict_append_variant(&dict, "Name",
  85                                         DBUS_TYPE_STRING, &network->name);
  86
  87         connman_dbus_dict_append_variant(&dict, "Connected",
  88                                 DBUS_TYPE_BOOLEAN, &network->connected);
  89
  90         if (network->strength > 0)
  91                 connman_dbus_dict_append_variant(&dict, "Strength",
  92                                         DBUS_TYPE_BYTE, &network->strength);
  93
  94         if (network->wifi.ssid != NULL && network->wifi.ssid_len > 0)
  95                 connman_dbus_dict_append_array(&dict, "WiFi.SSID",
  96                                 DBUS_TYPE_BYTE, &network->wifi.ssid,
  97                                                 network->wifi.ssid_len);
  98
  99         if (network->wifi.mode != NULL)
 100                 connman_dbus_dict_append_variant(&dict, "WiFi.Mode",
 101                                 DBUS_TYPE_STRING, &network->wifi.mode);
 102
 103         if (network->wifi.security != NULL)
 104                 connman_dbus_dict_append_variant(&dict, "WiFi.Security",
 105                                 DBUS_TYPE_STRING, &network->wifi.security);
 106
 107         if (network->wifi.passphrase != NULL)
 108                 connman_dbus_dict_append_variant(&dict, "WiFi.Passphrase",
 109                                 DBUS_TYPE_STRING, &network->wifi.passphrase);
 110
 111         dbus_message_iter_close_container(&array, &dict);
 112
 113         return reply;
 114 }
 115
 116 static DBusMessage *set_property(DBusConnection *conn,
 117                                         DBusMessage *msg, void *data)
 118 {
 119         DBusMessageIter iter, value;
 120         const char *name;
 121
 122         DBG("conn %p", conn);
 123
 124         if (dbus_message_iter_init(msg, &iter) == FALSE)
 125                 return __connman_error_invalid_arguments(msg);
 126
 127         dbus_message_iter_get_basic(&iter, &name);
 128         dbus_message_iter_next(&iter);
 129         dbus_message_iter_recurse(&iter, &value);
 130
 131         if (__connman_security_check_privileges(msg) < 0)
 132                 return __connman_error_permission_denied(msg);
 133
 134         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 135 }
 136
 137 static DBusMessage *do_connect(DBusConnection *conn,
 138                                         DBusMessage *msg, void *data)
 139 {
 140         struct connman_network *network = data;
 141         int err;
 142
 143         DBG("conn %p", conn);
 144
 145         if (network->driver && network->driver->connect) {
 146                 err = network->driver->connect(network);
 147                 if (err < 0 && err != -EINPROGRESS)
 148                         return __connman_error_failed(msg);
 149         }
 150
 151         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 152 }
 153
 154 static DBusMessage *do_disconnect(DBusConnection *conn,
 155                                         DBusMessage *msg, void *data)
 156 {
 157         struct connman_network *network = data;
 158         int err;
 159
 160         DBG("conn %p", conn);
 161
 162         if (network->driver && network->driver->disconnect) {
 163                 err = network->driver->disconnect(network);
 164                 if (err < 0 && err != -EINPROGRESS)
 165                         return __connman_error_failed(msg);
 166         }
 167
 168         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 169 }
 170
 171 static GDBusMethodTable network_methods[] = {
 172         { "GetProperties", "",   "a{sv}", get_properties },
 173         { "SetProperty",   "sv", "",      set_property   },
 174         { "Connect",       "",   "",      do_connect     },
 175         { "Disconnect",    "",   "",      do_disconnect  },
 176         { },
 177 };
 178
 179 static GDBusSignalTable network_signals[] = {
 180         { "PropertyChanged", "sv" },
 181         { },
 182 };
 183
 184 static DBusConnection *connection;
 185
 186 static void emit_networks_signal(void)
 187 {
 188 }
 189
 190 static int register_interface(struct connman_element *element)
 191 {
 192         struct connman_network *network = element->network;
 193
 194         DBG("element %p name %s", element, element->name);
 195
 196         if (g_dbus_register_interface(connection, element->path,
 197                                         CONNMAN_NETWORK_INTERFACE,
 198                                         network_methods, network_signals,
 199                                         NULL, network, NULL) == FALSE) {
 200                 connman_error("Failed to register %s network", element->path);
 201                 return -EIO;
 202         }
 203
 204         emit_networks_signal();
 205
 206         return 0;
 207 }
 208
 209 static void unregister_interface(struct connman_element *element)
 210 {
 211         DBG("element %p name %s", element, element->name);
 212
 213         emit_networks_signal();
 214
 215         g_dbus_unregister_interface(connection, element->path,
 216                                                 CONNMAN_NETWORK_INTERFACE);
 217 }
 218
 219 static GSList *driver_list = NULL;
 220
 221 static gint compare_priority(gconstpointer a, gconstpointer b)
 222 {
 223         const struct connman_network_driver *driver1 = a;
 224         const struct connman_network_driver *driver2 = b;
 225
 226         return driver2->priority - driver1->priority;
 227 }
 228
 229 /**
 230  * connman_network_driver_register:
 231  * @driver: network driver definition
 232  *
 233  * Register a new network driver
 234  *
 235  * Returns: %0 on success
 236  */
 237 int connman_network_driver_register(struct connman_network_driver *driver)
 238 {
 239         DBG("driver %p name %s", driver, driver->name);
 240
 241         driver_list = g_slist_insert_sorted(driver_list, driver,
 242                                                         compare_priority);
 243
 244         return 0;
 245 }
 246
 247 /**
 248  * connman_network_driver_unregister:
 249  * @driver: network driver definition
 250  *
 251  * Remove a previously registered network driver
 252  */
 253 void connman_network_driver_unregister(struct connman_network_driver *driver)
 254 {
 255         DBG("driver %p name %s", driver, driver->name);
 256
 257         driver_list = g_slist_remove(driver_list, driver);
 258 }
 259
 260 static void network_destruct(struct connman_element *element)
 261 {
 262         struct connman_network *network = element->network;
 263
 264         DBG("element %p name %s", element, element->name);
 265
 266         g_free(network->wifi.ssid);
 267         g_free(network->wifi.mode);
 268         g_free(network->wifi.security);
 269         g_free(network->wifi.passphrase);
 270
 271         g_free(network->node);
 272         g_free(network->name);
 273         g_free(network->identifier);
 274 }
 275
 276 /**
 277  * connman_network_create:
 278  * @identifier: network identifier (for example an unqiue name)
 279  *
 280  * Allocate a new network and assign the #identifier to it.
 281  *
 282  * Returns: a newly-allocated #connman_network structure
 283  */
 284 struct connman_network *connman_network_create(const char *identifier,
 285                                                 enum connman_network_type type)
 286 {
 287         struct connman_network *network;
 288
 289         DBG("identifier %s type %d", identifier, type);
 290
 291         network = g_try_new0(struct connman_network, 1);
 292         if (network == NULL)
 293                 return NULL;
 294
 295         DBG("network %p", network);
 296
 297         network->element.refcount = 1;
 298
 299         network->element.name = g_strdup(identifier);
 300         network->element.type = CONNMAN_ELEMENT_TYPE_NETWORK;
 301         network->element.index = -1;
 302
 303         switch (type) {
 304         case CONNMAN_NETWORK_TYPE_UNKNOWN:
 305         case CONNMAN_NETWORK_TYPE_VENDOR:
 306                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 307                 break;
 308         case CONNMAN_NETWORK_TYPE_WIFI:
 309                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 310                 break;
 311         case CONNMAN_NETWORK_TYPE_BLUETOOTH_PAN:
 312         case CONNMAN_NETWORK_TYPE_BLUETOOTH_DUN:
 313                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH;
 314                 break;
 315         case CONNMAN_NETWORK_TYPE_HSO:
 316                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_CELLULAR;
 317                 break;
 318         }
 319
 320         network->element.network = network;
 321         network->element.destruct = network_destruct;
 322
 323         network->type = type;
 324         network->identifier = g_strdup(identifier);
 325
 326         return network;
 327 }
 328
 329 /**
 330  * connman_network_ref:
 331  * @network: network structure
 332  *
 333  * Increase reference counter of  network
 334  */
 335 struct connman_network *connman_network_ref(struct connman_network *network)
 336 {
 337         if (connman_element_ref(&network->element) == NULL)
 338                 return NULL;
 339
 340         return network;
 341 }
 342
 343 /**
 344  * connman_network_unref:
 345  * @network: network structure
 346  *
 347  * Decrease reference counter of network
 348  */
 349 void connman_network_unref(struct connman_network *network)
 350 {
 351         connman_element_unref(&network->element);
 352 }
 353
 354 /**
 355  * connman_network_get_identifier:
 356  * @network: network structure
 357  *
 358  * Get identifier of network
 359  */
 360 const char *connman_network_get_identifier(struct connman_network *network)
 361 {
 362         return network->identifier;
 363 }
 364
 365 /**
 366  * connman_network_get_path:
 367  * @network: network structure
 368  *
 369  * Get path name of network
 370  */
 371 const char *connman_network_get_path(struct connman_network *network)
 372 {
 373         return network->element.path;
 374 }
 375
 376 /**
 377  * connman_network_set_index:
 378  * @network: network structure
 379  * @index: index number
 380  *
 381  * Set index number of network
 382  */
 383 void connman_network_set_index(struct connman_network *network, int index)
 384 {
 385         network->element.index = index;
 386 }
 387
 388 /**
 389  * connman_network_get_index:
 390  * @network: network structure
 391  *
 392  * Get index number of network
 393  */
 394 int connman_network_get_index(struct connman_network *network)
 395 {
 396         return network->element.index;
 397 }
 398
 399 /**
 400  * connman_network_set_protocol:
 401  * @network: network structure
 402  * @protocol: network protocol
 403  *
 404  * Change protocol of network
 405  */
 406 void connman_network_set_protocol(struct connman_network *network,
 407                                         enum connman_network_protocol protocol)
 408 {
 409         network->protocol = protocol;
 410 }
 411
 412 /**
 413  * connman_network_set_connected:
 414  * @network: network structure
 415  * @connected: connected state
 416  *
 417  * Change connected state of network
 418  */
 419 int connman_network_set_connected(struct connman_network *network,
 420                                                 connman_bool_t connected)
 421 {
 422         DBG("network %p connected %d", network, connected);
 423
 424         if (network->connected == connected)
 425                 return -EALREADY;
 426
 427         network->connected = connected;
 428
 429         if (connected == TRUE) {
 430                 struct connman_element *element;
 431                 enum connman_element_type type = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 432
 433                 switch (network->protocol) {
 434                 case CONNMAN_NETWORK_PROTOCOL_UNKNOWN:
 435                         return 0;
 436                 case CONNMAN_NETWORK_PROTOCOL_IP:
 437                         type = CONNMAN_ELEMENT_TYPE_DHCP;
 438                         break;
 439                 case CONNMAN_NETWORK_PROTOCOL_PPP:
 440                         type = CONNMAN_ELEMENT_TYPE_PPP;
 441                         break;
 442                 }
 443
 444                 element = connman_element_create(NULL);
 445                 if (element != NULL) {
 446                         element->type    = type;
 447                         element->subtype = network->element.subtype;
 448                         element->index   = network->element.index;
 449
 450                         if (connman_element_register(element,
 451                                                         &network->element) < 0)
 452                                 connman_element_unref(element);
 453                 }
 454         } else
 455                 connman_element_unregister_children(&network->element);
 456
 457         return 0;
 458 }
 459
 460 /**
 461  * connman_network_set_string:
 462  * @network: network structure
 463  * @key: unique identifier
 464  * @value: string value
 465  *
 466  * Set string value for specific key
 467  */
 468 int connman_network_set_string(struct connman_network *network,
 469                                         const char *key, const char *value)
 470 {
 471         DBG("network %p key %s value %s", network, key, value);
 472
 473         if (g_str_equal(key, "Name") == TRUE) {
 474                 g_free(network->name);
 475                 network->name = g_strdup(value);
 476         } else if (g_str_equal(key, "Node") == TRUE) {
 477                 g_free(network->node);
 478                 network->node = g_strdup(value);
 479         } else if (g_str_equal(key, "WiFi.Mode") == TRUE) {
 480                 g_free(network->wifi.mode);
 481                 network->wifi.mode = g_strdup(value);
 482         } else if (g_str_equal(key, "WiFi.Security") == TRUE) {
 483                 g_free(network->wifi.security);
 484                 network->wifi.security = g_strdup(value);
 485         }
 486
 487         return 0;
 488 }
 489
 490 /**
 491  * connman_network_get_string:
 492  * @network: network structure
 493  * @key: unique identifier
 494  *
 495  * Get string value for specific key
 496  */
 497 const char *connman_network_get_string(struct connman_network *network,
 498                                                         const char *key)
 499 {
 500         DBG("network %p key %s", network);
 501
 502         if (g_str_equal(key, "Name") == TRUE)
 503                 return network->name;
 504         else if (g_str_equal(key, "Node") == TRUE)
 505                 return network->node;
 506         else if (g_str_equal(key, "WiFi.Mode") == TRUE)
 507                 return network->wifi.mode;
 508         else if (g_str_equal(key, "WiFi.Security") == TRUE)
 509                 return network->wifi.security;
 510
 511         return NULL;
 512 }
 513
 514 /**
 515  * connman_network_set_uint8:
 516  * @network: network structure
 517  * @key: unique identifier
 518  * @value: integer value
 519  *
 520  * Set integer value for specific key
 521  */
 522 int connman_network_set_uint8(struct connman_network *network,
 523                                         const char *key, connman_uint8_t value)
 524 {
 525         DBG("network %p key %s value %d", network, key, value);
 526
 527         if (g_str_equal(key, "Strength") == TRUE)
 528                 network->strength = value;
 529
 530         return 0;
 531 }
 532
 533 /**
 534  * connman_network_set_blob:
 535  * @network: network structure
 536  * @key: unique identifier
 537  * @data: blob data
 538  * @size: blob size
 539  *
 540  * Set binary blob value for specific key
 541  */
 542 int connman_network_set_blob(struct connman_network *network,
 543                         const char *key, const void *data, unsigned int size)
 544 {
 545         DBG("network %p key %s size %d", network, key, size);
 546
 547         if (g_str_equal(key, "WiFi.SSID") == TRUE) {
 548                 g_free(network->wifi.ssid);
 549                 network->wifi.ssid = g_try_malloc(size);
 550                 if (network->wifi.ssid != NULL) {
 551                         memcpy(network->wifi.ssid, data, size);
 552                         network->wifi.ssid_len = size;
 553                 } else
 554                         network->wifi.ssid_len = 0;
 555         }
 556
 557         return 0;
 558 }
 559
 560 void __connman_network_set_device(struct connman_network *network,
 561                                         struct connman_device *device)
 562 {
 563         network->device = device;
 564 }
 565
 566 /**
 567  * connman_network_get_device:
 568  * @network: network structure
 569  *
 570  * Get parent device of network
 571  */
 572 struct connman_device *connman_network_get_device(struct connman_network *network)
 573 {
 574         return network->device;
 575 }
 576
 577 /**
 578  * connman_network_get_data:
 579  * @network: network structure
 580  *
 581  * Get private network data pointer
 582  */
 583 void *connman_network_get_data(struct connman_network *network)
 584 {
 585         return network->driver_data;
 586 }
 587
 588 /**
 589  * connman_network_set_data:
 590  * @network: network structure
 591  * @data: data pointer
 592  *
 593  * Set private network data pointer
 594  */
 595 void connman_network_set_data(struct connman_network *network, void *data)
 596 {
 597         network->driver_data = data;
 598 }
 599
 600 static gboolean match_driver(struct connman_network *network,
 601                                         struct connman_network_driver *driver)
 602 {
 603         if (network->type == driver->type ||
 604                         driver->type == CONNMAN_NETWORK_TYPE_UNKNOWN)
 605                 return TRUE;
 606
 607         return FALSE;
 608 }
 609
 610 static int network_probe(struct connman_element *element)
 611 {
 612         struct connman_network *network = element->network;
 613         GSList *list;
 614         int err;
 615
 616         DBG("element %p name %s", element, element->name);
 617
 618         if (network == NULL)
 619                 return -ENODEV;
 620
 621         for (list = driver_list; list; list = list->next) {
 622                 struct connman_network_driver *driver = list->data;
 623
 624                 if (match_driver(network, driver) == FALSE)
 625                         continue;
 626
 627                 DBG("driver %p name %s", driver, driver->name);
 628
 629                 if (driver->probe(network) == 0) {
 630                         network->driver = driver;
 631                         break;
 632                 }
 633         }
 634
 635         if (network->driver == NULL)
 636                 return -ENODEV;
 637
 638         err = register_interface(element);
 639         if (err < 0) {
 640                 if (network->driver->remove)
 641                         network->driver->remove(network);
 642                 return err;
 643         }
 644
 645         return 0;
 646 }
 647
 648 static void network_remove(struct connman_element *element)
 649 {
 650         struct connman_network *network = element->network;
 651
 652         DBG("element %p name %s", element, element->name);
 653
 654         if (network == NULL)
 655                 return;
 656
 657         if (network->driver == NULL)
 658                 return;
 659
 660         unregister_interface(element);
 661
 662         if (network->driver->remove)
 663                 network->driver->remove(network);
 664 }
 665
 666 static struct connman_driver network_driver = {
 667         .name           = "network",
 668         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 669         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
 670         .probe          = network_probe,
 671         .remove         = network_remove,
 672 };
 673
 674 static int network_load(struct connman_network *network)
 675 {
 676         DBG("network %p", network);
 677
 678         return 0;
 679 }
 680
 681 static int network_save(struct connman_network *network)
 682 {
 683         DBG("network %p", network);
 684
 685         return 0;
 686 }
 687
 688 static struct connman_storage network_storage = {
 689         .name           = "network",
 690         .priority       = CONNMAN_STORAGE_PRIORITY_LOW,
 691         .network_load   = network_load,
 692         .network_save   = network_save,
 693 };
 694
 695 int __connman_network_init(void)
 696 {
 697         DBG("");
 698
 699         connection = connman_dbus_get_connection();
 700
 701         if (connman_storage_register(&network_storage) < 0)
 702                 connman_error("Failed to register network storage");
 703
 704         return connman_driver_register(&network_driver);
 705 }
 706
 707 void __connman_network_cleanup(void)
 708 {
 709         DBG("");
 710
 711         connman_driver_unregister(&network_driver);
 712
 713         connman_storage_unregister(&network_storage);
 714
 715         dbus_connection_unref(connection);
 716 }