git.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 <gdbus.h>
  27
  28 #include "connman.h"
  29
  30 struct connman_network {
  31         struct connman_element element;
  32         enum connman_network_type type;
  33         enum connman_network_protocol protocol;
  34         gboolean connected;
  35         char *identifier;
  36         char *path;
  37
  38         struct connman_network_driver *driver;
  39         void *driver_data;
  40
  41         struct connman_device *device;
  42 };
  43
  44 static DBusMessage *get_properties(DBusConnection *conn,
  45                                         DBusMessage *msg, void *data)
  46 {
  47         struct connman_network *network = data;
  48         DBusMessage *reply;
  49         DBusMessageIter array, dict;
  50
  51         DBG("conn %p", conn);
  52
  53         reply = dbus_message_new_method_return(msg);
  54         if (reply == NULL)
  55                 return NULL;
  56
  57         dbus_message_iter_init_append(reply, &array);
  58
  59         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
  60                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
  61                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
  62                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
  63
  64         if (network->identifier != NULL)
  65                 connman_dbus_dict_append_variant(&dict, "Name",
  66                                 DBUS_TYPE_STRING, &network->identifier);
  67
  68         connman_dbus_dict_append_variant(&dict, "Connected",
  69                                 DBUS_TYPE_BOOLEAN, &network->connected);
  70
  71         dbus_message_iter_close_container(&array, &dict);
  72
  73         return reply;
  74 }
  75
  76 static DBusMessage *set_property(DBusConnection *conn,
  77                                         DBusMessage *msg, void *data)
  78 {
  79         DBusMessageIter iter, value;
  80         const char *name;
  81
  82         DBG("conn %p", conn);
  83
  84         if (dbus_message_iter_init(msg, &iter) == FALSE)
  85                 return __connman_error_invalid_arguments(msg);
  86
  87         dbus_message_iter_get_basic(&iter, &name);
  88         dbus_message_iter_next(&iter);
  89         dbus_message_iter_recurse(&iter, &value);
  90
  91         if (__connman_security_check_privileges(msg) < 0)
  92                 return __connman_error_permission_denied(msg);
  93
  94         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
  95 }
  96
  97 static DBusMessage *do_connect(DBusConnection *conn,
  98                                         DBusMessage *msg, void *data)
  99 {
 100         struct connman_network *network = data;
 101         int err;
 102
 103         DBG("conn %p", conn);
 104
 105         if (network->driver && network->driver->connect) {
 106                 err = network->driver->connect(network);
 107                 if (err < 0 && err != -EINPROGRESS)
 108                         return __connman_error_failed(msg);
 109         }
 110
 111         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 112 }
 113
 114 static DBusMessage *do_disconnect(DBusConnection *conn,
 115                                         DBusMessage *msg, void *data)
 116 {
 117         struct connman_network *network = data;
 118         int err;
 119
 120         DBG("conn %p", conn);
 121
 122         if (network->driver && network->driver->disconnect) {
 123                 err = network->driver->disconnect(network);
 124                 if (err < 0 && err != -EINPROGRESS)
 125                         return __connman_error_failed(msg);
 126         }
 127
 128         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 129 }
 130
 131 static GDBusMethodTable network_methods[] = {
 132         { "GetProperties", "",   "a{sv}", get_properties },
 133         { "SetProperty",   "sv", "",      set_property   },
 134         { "Connect",       "",   "",      do_connect     },
 135         { "Disconnect",    "",   "",      do_disconnect  },
 136         { },
 137 };
 138
 139 static GDBusSignalTable network_signals[] = {
 140         { "PropertyChanged", "sv" },
 141         { },
 142 };
 143
 144 static DBusConnection *connection;
 145
 146 static void emit_networks_signal(void)
 147 {
 148 }
 149
 150 static int register_interface(struct connman_element *element)
 151 {
 152         struct connman_network *network = element->network;
 153
 154         DBG("element %p name %s", element, element->name);
 155
 156         g_dbus_unregister_interface(connection, element->path,
 157                                                 CONNMAN_NETWORK_INTERFACE);
 158
 159         if (g_dbus_register_interface(connection, element->path,
 160                                         CONNMAN_NETWORK_INTERFACE,
 161                                         network_methods, network_signals,
 162                                         NULL, network, NULL) == FALSE) {
 163                 connman_error("Failed to register %s network", element->path);
 164                 return -EIO;
 165         }
 166
 167         emit_networks_signal();
 168
 169         return 0;
 170 }
 171
 172 static void unregister_interface(struct connman_element *element)
 173 {
 174         DBG("element %p name %s", element, element->name);
 175
 176         emit_networks_signal();
 177
 178         g_dbus_unregister_interface(connection, element->path,
 179                                                 CONNMAN_NETWORK_INTERFACE);
 180 }
 181
 182 static GSList *driver_list = NULL;
 183
 184 static gint compare_priority(gconstpointer a, gconstpointer b)
 185 {
 186         const struct connman_network_driver *driver1 = a;
 187         const struct connman_network_driver *driver2 = b;
 188
 189         return driver2->priority - driver1->priority;
 190 }
 191
 192 /**
 193  * connman_network_driver_register:
 194  * @driver: network driver definition
 195  *
 196  * Register a new network driver
 197  *
 198  * Returns: %0 on success
 199  */
 200 int connman_network_driver_register(struct connman_network_driver *driver)
 201 {
 202         DBG("driver %p name %s", driver, driver->name);
 203
 204         driver_list = g_slist_insert_sorted(driver_list, driver,
 205                                                         compare_priority);
 206
 207         return 0;
 208 }
 209
 210 /**
 211  * connman_network_driver_unregister:
 212  * @driver: network driver definition
 213  *
 214  * Remove a previously registered network driver
 215  */
 216 void connman_network_driver_unregister(struct connman_network_driver *driver)
 217 {
 218         DBG("driver %p name %s", driver, driver->name);
 219
 220         driver_list = g_slist_remove(driver_list, driver);
 221 }
 222
 223 static void network_destruct(struct connman_element *element)
 224 {
 225         struct connman_network *network = element->network;
 226
 227         DBG("element %p name %s", element, element->name);
 228
 229         g_free(network->path);
 230         g_free(network->identifier);
 231 }
 232
 233 /**
 234  * connman_network_create:
 235  * @identifier: network identifier (for example an unqiue name)
 236  *
 237  * Allocate a new network and assign the #identifier to it.
 238  *
 239  * Returns: a newly-allocated #connman_network structure
 240  */
 241 struct connman_network *connman_network_create(const char *identifier,
 242                                                 enum connman_network_type type)
 243 {
 244         struct connman_network *network;
 245
 246         DBG("identifier %s type %d", identifier, type);
 247
 248         network = g_try_new0(struct connman_network, 1);
 249         if (network == NULL)
 250                 return NULL;
 251
 252         DBG("network %p", network);
 253
 254         network->element.refcount = 1;
 255
 256         network->element.name = g_strdup(identifier);
 257         network->element.type = CONNMAN_ELEMENT_TYPE_NETWORK;
 258         network->element.index = -1;
 259
 260         switch (type) {
 261         case CONNMAN_NETWORK_TYPE_UNKNOWN:
 262                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 263                 break;
 264         case CONNMAN_NETWORK_TYPE_WIFI:
 265                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 266                 break;
 267         case CONNMAN_NETWORK_TYPE_BLUETOOTH_PAN:
 268         case CONNMAN_NETWORK_TYPE_BLUETOOTH_DUN:
 269                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH;
 270                 break;
 271         case CONNMAN_NETWORK_TYPE_HSO:
 272                 network->element.subtype = CONNMAN_ELEMENT_SUBTYPE_CELLULAR;
 273                 break;
 274         }
 275
 276         network->element.network = network;
 277         network->element.destruct = network_destruct;
 278
 279         network->type = type;
 280         network->identifier = g_strdup(identifier);
 281
 282         return network;
 283 }
 284
 285 /**
 286  * connman_network_ref:
 287  * @network: network structure
 288  *
 289  * Increase reference counter of  network
 290  */
 291 struct connman_network *connman_network_ref(struct connman_network *network)
 292 {
 293         if (connman_element_ref(&network->element) == NULL)
 294                 return NULL;
 295
 296         return network;
 297 }
 298
 299 /**
 300  * connman_network_unref:
 301  * @network: network structure
 302  *
 303  * Decrease reference counter of network
 304  */
 305 void connman_network_unref(struct connman_network *network)
 306 {
 307         connman_element_unref(&network->element);
 308 }
 309
 310 /**
 311  * connman_network_get_identifier:
 312  * @network: network structure
 313  *
 314  * Get identifier of network
 315  */
 316 const char *connman_network_get_identifier(struct connman_network *network)
 317 {
 318         return network->identifier;
 319 }
 320
 321 /**
 322  * connman_network_set_path:
 323  * @network: network structure
 324  * @path: path name
 325  *
 326  * Set path name of network
 327  */
 328 void connman_network_set_path(struct connman_network *network, const char *path)
 329 {
 330         g_free(network->element.devpath);
 331         network->element.devpath = g_strdup(path);
 332
 333         g_free(network->path);
 334         network->path = g_strdup(path);
 335 }
 336
 337 /**
 338  * connman_network_get_path:
 339  * @network: network structure
 340  *
 341  * Get path name of network
 342  */
 343 const char *connman_network_get_path(struct connman_network *network)
 344 {
 345         return network->path;
 346 }
 347
 348 /**
 349  * connman_network_set_index:
 350  * @network: network structure
 351  * @index: index number
 352  *
 353  * Set index number of network
 354  */
 355 void connman_network_set_index(struct connman_network *network, int index)
 356 {
 357         network->element.index = index;
 358 }
 359
 360 /**
 361  * connman_network_get_index:
 362  * @network: network structure
 363  *
 364  * Get index number of network
 365  */
 366 int connman_network_get_index(struct connman_network *network)
 367 {
 368         return network->element.index;
 369 }
 370
 371 /**
 372  * connman_network_set_protocol:
 373  * @network: network structure
 374  * @protocol: network protocol
 375  *
 376  * Change protocol of network
 377  */
 378 void connman_network_set_protocol(struct connman_network *network,
 379                                         enum connman_network_protocol protocol)
 380 {
 381         network->protocol = protocol;
 382 }
 383
 384 /**
 385  * connman_network_set_connected:
 386  * @network: network structure
 387  * @connected: connected state
 388  *
 389  * Change connected state of network
 390  */
 391 int connman_network_set_connected(struct connman_network *network,
 392                                                 connman_bool_t connected)
 393 {
 394         DBG("network %p connected %d", network, connected);
 395
 396         if (network->connected == connected)
 397                 return -EALREADY;
 398
 399         network->connected = connected;
 400
 401         if (connected == TRUE) {
 402                 struct connman_element *element;
 403                 enum connman_element_type type = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 404
 405                 switch (network->protocol) {
 406                 case CONNMAN_NETWORK_PROTOCOL_UNKNOWN:
 407                         return 0;
 408                 case CONNMAN_NETWORK_PROTOCOL_IP:
 409                         type = CONNMAN_ELEMENT_TYPE_DHCP;
 410                         break;
 411                 case CONNMAN_NETWORK_PROTOCOL_PPP:
 412                         type = CONNMAN_ELEMENT_TYPE_PPP;
 413                         break;
 414                 }
 415
 416                 element = connman_element_create(NULL);
 417                 if (element != NULL) {
 418                         element->type    = type;
 419                         element->subtype = network->element.subtype;
 420                         element->index   = network->element.index;
 421
 422                         if (connman_element_register(element,
 423                                                         &network->element) < 0)
 424                                 connman_element_unref(element);
 425                 }
 426         } else
 427                 connman_element_unregister_children(&network->element);
 428
 429         return 0;
 430 }
 431
 432 void __connman_network_set_device(struct connman_network *network,
 433                                         struct connman_device *device)
 434 {
 435         network->device = device;
 436 }
 437
 438 /**
 439  * connman_network_get_device:
 440  * @network: network structure
 441  *
 442  * Get parent device of network
 443  */
 444 struct connman_device *connman_network_get_device(struct connman_network *network)
 445 {
 446         return network->device;
 447 }
 448
 449 /**
 450  * connman_network_get_data:
 451  * @network: network structure
 452  *
 453  * Get private network data pointer
 454  */
 455 void *connman_network_get_data(struct connman_network *network)
 456 {
 457         return network->driver_data;
 458 }
 459
 460 /**
 461  * connman_network_set_data:
 462  * @network: network structure
 463  * @data: data pointer
 464  *
 465  * Set private network data pointer
 466  */
 467 void connman_network_set_data(struct connman_network *network, void *data)
 468 {
 469         network->driver_data = data;
 470 }
 471
 472 static gboolean match_driver(struct connman_network *network,
 473                                         struct connman_network_driver *driver)
 474 {
 475         if (network->type == driver->type ||
 476                         driver->type == CONNMAN_NETWORK_TYPE_UNKNOWN)
 477                 return TRUE;
 478
 479         return FALSE;
 480 }
 481
 482 static int network_probe(struct connman_element *element)
 483 {
 484         struct connman_network *network = element->network;
 485         GSList *list;
 486         int err;
 487
 488         DBG("element %p name %s", element, element->name);
 489
 490         if (network == NULL)
 491                 return -ENODEV;
 492
 493         for (list = driver_list; list; list = list->next) {
 494                 struct connman_network_driver *driver = list->data;
 495
 496                 if (match_driver(network, driver) == FALSE)
 497                         continue;
 498
 499                 DBG("driver %p name %s", driver, driver->name);
 500
 501                 if (driver->probe(network) == 0) {
 502                         network->driver = driver;
 503                         break;
 504                 }
 505         }
 506
 507         if (network->driver == NULL)
 508                 return -ENODEV;
 509
 510         err = register_interface(element);
 511         if (err < 0) {
 512                 if (network->driver->remove)
 513                         network->driver->remove(network);
 514                 return err;
 515         }
 516
 517         return 0;
 518 }
 519
 520 static void network_remove(struct connman_element *element)
 521 {
 522         struct connman_network *network = element->network;
 523
 524         DBG("element %p name %s", element, element->name);
 525
 526         if (network == NULL)
 527                 return;
 528
 529         if (network->driver == NULL)
 530                 return;
 531
 532         unregister_interface(element);
 533
 534         if (network->driver->remove)
 535                 network->driver->remove(network);
 536 }
 537
 538 static struct connman_driver network_driver = {
 539         .name           = "network",
 540         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 541         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
 542         .probe          = network_probe,
 543         .remove         = network_remove,
 544 };
 545
 546 int __connman_network_init(void)
 547 {
 548         DBG("");
 549
 550         connection = connman_dbus_get_connection();
 551
 552         return connman_driver_register(&network_driver);
 553 }
 554
 555 void __connman_network_cleanup(void)
 556 {
 557         DBG("");
 558
 559         connman_driver_unregister(&network_driver);
 560
 561         dbus_connection_unref(connection);
 562 }