git.maemo.org Git - connman/blob - src/network.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  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         char *identifier;
  34         char *path;
  35
  36         struct connman_network_driver *driver;
  37         void *driver_data;
  38
  39         struct connman_device *device;
  40 };
  41
  42 static DBusMessage *get_properties(DBusConnection *conn,
  43                                         DBusMessage *msg, void *data)
  44 {
  45         struct connman_network *network = data;
  46         DBusMessage *reply;
  47         DBusMessageIter array, dict;
  48
  49         DBG("conn %p", conn);
  50
  51         reply = dbus_message_new_method_return(msg);
  52         if (reply == NULL)
  53                 return NULL;
  54
  55         dbus_message_iter_init_append(reply, &array);
  56
  57         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
  58                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
  59                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
  60                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
  61
  62         if (network->identifier != NULL)
  63                 connman_dbus_dict_append_variant(&dict, "Name",
  64                                 DBUS_TYPE_STRING, &network->identifier);
  65
  66         dbus_message_iter_close_container(&array, &dict);
  67
  68         return reply;
  69 }
  70
  71 static DBusMessage *set_property(DBusConnection *conn,
  72                                         DBusMessage *msg, void *data)
  73 {
  74         DBusMessageIter iter, value;
  75         const char *name;
  76
  77         DBG("conn %p", conn);
  78
  79         if (dbus_message_iter_init(msg, &iter) == FALSE)
  80                 return __connman_error_invalid_arguments(msg);
  81
  82         dbus_message_iter_get_basic(&iter, &name);
  83         dbus_message_iter_next(&iter);
  84         dbus_message_iter_recurse(&iter, &value);
  85
  86         if (__connman_security_check_privileges(msg) < 0)
  87                 return __connman_error_permission_denied(msg);
  88
  89         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
  90 }
  91
  92 static DBusMessage *do_connect(DBusConnection *conn,
  93                                         DBusMessage *msg, void *data)
  94 {
  95         struct connman_network *network = data;
  96         int err;
  97
  98         DBG("conn %p", conn);
  99
 100         if (network->driver && network->driver->connect) {
 101                 err = network->driver->connect(network);
 102                 if (err < 0 && err != -EINPROGRESS)
 103                         return __connman_error_failed(msg);
 104         }
 105
 106         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 107 }
 108
 109 static DBusMessage *do_disconnect(DBusConnection *conn,
 110                                         DBusMessage *msg, void *data)
 111 {
 112         struct connman_network *network = data;
 113         int err;
 114
 115         DBG("conn %p", conn);
 116
 117         if (network->driver && network->driver->disconnect) {
 118                 err = network->driver->disconnect(network);
 119                 if (err < 0 && err != -EINPROGRESS)
 120                         return __connman_error_failed(msg);
 121         }
 122
 123         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 124 }
 125
 126 static GDBusMethodTable network_methods[] = {
 127         { "GetProperties", "",   "a{sv}", get_properties },
 128         { "SetProperty",   "sv", "",      set_property   },
 129         { "Connect",       "",   "",      do_connect     },
 130         { "Disconnect",    "",   "",      do_disconnect  },
 131         { },
 132 };
 133
 134 static GDBusSignalTable network_signals[] = {
 135         { "PropertyChanged", "sv" },
 136         { },
 137 };
 138
 139 static DBusConnection *connection;
 140
 141 static void emit_networks_signal(void)
 142 {
 143 }
 144
 145 static int register_interface(struct connman_element *element)
 146 {
 147         struct connman_network *network = element->network;
 148
 149         DBG("element %p name %s", element, element->name);
 150
 151         g_dbus_unregister_interface(connection, element->path,
 152                                                 CONNMAN_NETWORK_INTERFACE);
 153
 154         if (g_dbus_register_interface(connection, element->path,
 155                                         CONNMAN_NETWORK_INTERFACE,
 156                                         network_methods, network_signals,
 157                                         NULL, network, NULL) == FALSE) {
 158                 connman_error("Failed to register %s network", element->path);
 159                 return -EIO;
 160         }
 161
 162         emit_networks_signal();
 163
 164         return 0;
 165 }
 166
 167 static void unregister_interface(struct connman_element *element)
 168 {
 169         DBG("element %p name %s", element, element->name);
 170
 171         emit_networks_signal();
 172
 173         g_dbus_unregister_interface(connection, element->path,
 174                                                 CONNMAN_NETWORK_INTERFACE);
 175 }
 176
 177 static GSList *driver_list = NULL;
 178
 179 static gint compare_priority(gconstpointer a, gconstpointer b)
 180 {
 181         const struct connman_network_driver *driver1 = a;
 182         const struct connman_network_driver *driver2 = b;
 183
 184         return driver2->priority - driver1->priority;
 185 }
 186
 187 /**
 188  * connman_network_driver_register:
 189  * @driver: network driver definition
 190  *
 191  * Register a new network driver
 192  *
 193  * Returns: %0 on success
 194  */
 195 int connman_network_driver_register(struct connman_network_driver *driver)
 196 {
 197         DBG("driver %p name %s", driver, driver->name);
 198
 199         driver_list = g_slist_insert_sorted(driver_list, driver,
 200                                                         compare_priority);
 201
 202         return 0;
 203 }
 204
 205 /**
 206  * connman_network_driver_unregister:
 207  * @driver: network driver definition
 208  *
 209  * Remove a previously registered network driver
 210  */
 211 void connman_network_driver_unregister(struct connman_network_driver *driver)
 212 {
 213         DBG("driver %p name %s", driver, driver->name);
 214
 215         driver_list = g_slist_remove(driver_list, driver);
 216 }
 217
 218 static void network_destruct(struct connman_element *element)
 219 {
 220         struct connman_network *network = element->network;
 221
 222         DBG("element %p name %s", element, element->name);
 223
 224         g_free(network->path);
 225         g_free(network->identifier);
 226 }
 227
 228 /**
 229  * connman_network_create:
 230  * @identifier: network identifier (for example an unqiue name)
 231  *
 232  * Allocate a new network and assign the #identifier to it.
 233  *
 234  * Returns: a newly-allocated #connman_network structure
 235  */
 236 struct connman_network *connman_network_create(const char *identifier,
 237                                                 enum connman_network_type type)
 238 {
 239         struct connman_network *network;
 240
 241         DBG("identifier %s type %d", identifier, type);
 242
 243         network = g_try_new0(struct connman_network, 1);
 244         if (network == NULL)
 245                 return NULL;
 246
 247         DBG("network %p", network);
 248
 249         network->element.refcount = 1;
 250
 251         network->element.name = g_strdup(identifier);
 252         network->element.type = CONNMAN_ELEMENT_TYPE_NETWORK;
 253         network->element.index = -1;
 254
 255         network->element.network = network;
 256         network->element.destruct = network_destruct;
 257
 258         network->type = type;
 259         network->identifier = g_strdup(identifier);
 260
 261         return network;
 262 }
 263
 264 /**
 265  * connman_network_ref:
 266  * @network: network structure
 267  *
 268  * Increase reference counter of  network
 269  */
 270 struct connman_network *connman_network_ref(struct connman_network *network)
 271 {
 272         if (connman_element_ref(&network->element) == NULL)
 273                 return NULL;
 274
 275         return network;
 276 }
 277
 278 /**
 279  * connman_network_unref:
 280  * @network: network structure
 281  *
 282  * Decrease reference counter of network
 283  */
 284 void connman_network_unref(struct connman_network *network)
 285 {
 286         connman_element_unref(&network->element);
 287 }
 288
 289 /**
 290  * connman_network_get_identifier:
 291  * @network: network structure
 292  *
 293  * Get identifier of network
 294  */
 295 const char *connman_network_get_identifier(struct connman_network *network)
 296 {
 297         return network->identifier;
 298 }
 299
 300 /**
 301  * connman_network_set_path:
 302  * @network: network structure
 303  * @path: path name
 304  *
 305  * Set path name of network
 306  */
 307 void connman_network_set_path(struct connman_network *network, const char *path)
 308 {
 309         g_free(network->element.devpath);
 310         network->element.devpath = g_strdup(path);
 311
 312         g_free(network->path);
 313         network->path = g_strdup(path);
 314 }
 315
 316 /**
 317  * connman_network_get_path:
 318  * @network: network structure
 319  *
 320  * Get path name of network
 321  */
 322 const char *connman_network_get_path(struct connman_network *network)
 323 {
 324         return network->path;
 325 }
 326
 327 void __connman_network_set_device(struct connman_network *network,
 328                                         struct connman_device *device)
 329 {
 330         network->device = device;
 331 }
 332
 333 /**
 334  * connman_network_get_device:
 335  * @network: network structure
 336  *
 337  * Get parent device of network
 338  */
 339 struct connman_device *connman_network_get_device(struct connman_network *network)
 340 {
 341         return network->device;
 342 }
 343
 344 /**
 345  * connman_network_get_data:
 346  * @network: network structure
 347  *
 348  * Get private network data pointer
 349  */
 350 void *connman_network_get_data(struct connman_network *network)
 351 {
 352         return network->driver_data;
 353 }
 354
 355 /**
 356  * connman_network_set_data:
 357  * @network: network structure
 358  * @data: data pointer
 359  *
 360  * Set private network data pointer
 361  */
 362 void connman_network_set_data(struct connman_network *network, void *data)
 363 {
 364         network->driver_data = data;
 365 }
 366
 367 static gboolean match_driver(struct connman_network *network,
 368                                         struct connman_network_driver *driver)
 369 {
 370         if (network->type == driver->type ||
 371                         driver->type == CONNMAN_NETWORK_TYPE_UNKNOWN)
 372                 return TRUE;
 373
 374         return FALSE;
 375 }
 376
 377 static int network_probe(struct connman_element *element)
 378 {
 379         struct connman_network *network = element->network;
 380         GSList *list;
 381         int err;
 382
 383         DBG("element %p name %s", element, element->name);
 384
 385         if (network == NULL)
 386                 return -ENODEV;
 387
 388         for (list = driver_list; list; list = list->next) {
 389                 struct connman_network_driver *driver = list->data;
 390
 391                 if (match_driver(network, driver) == FALSE)
 392                         continue;
 393
 394                 DBG("driver %p name %s", driver, driver->name);
 395
 396                 if (driver->probe(network) == 0) {
 397                         network->driver = driver;
 398                         break;
 399                 }
 400         }
 401
 402         if (network->driver == NULL)
 403                 return -ENODEV;
 404
 405         err = register_interface(element);
 406         if (err < 0) {
 407                 if (network->driver->remove)
 408                         network->driver->remove(network);
 409                 return err;
 410         }
 411
 412         return 0;
 413 }
 414
 415 static void network_remove(struct connman_element *element)
 416 {
 417         struct connman_network *network = element->network;
 418
 419         DBG("element %p name %s", element, element->name);
 420
 421         if (network == NULL)
 422                 return;
 423
 424         if (network->driver == NULL)
 425                 return;
 426
 427         unregister_interface(element);
 428
 429         if (network->driver->remove)
 430                 network->driver->remove(network);
 431 }
 432
 433 static struct connman_driver network_driver = {
 434         .name           = "network",
 435         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 436         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
 437         .probe          = network_probe,
 438         .remove         = network_remove,
 439 };
 440
 441 int __connman_network_init(void)
 442 {
 443         DBG("");
 444
 445         connection = connman_dbus_get_connection();
 446
 447         return connman_driver_register(&network_driver);
 448 }
 449
 450 void __connman_network_cleanup(void)
 451 {
 452         DBG("");
 453
 454         connman_driver_unregister(&network_driver);
 455
 456         dbus_connection_unref(connection);
 457 }