vcs.maemo.org Git - connman/blob - plugins/wifi.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 <stdio.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <sys/ioctl.h>
  30 #include <sys/socket.h>
  31 #include <linux/if_arp.h>
  32 #include <linux/wireless.h>
  33
  34 #include <gdbus.h>
  35
  36 #include <connman/plugin.h>
  37 #include <connman/driver.h>
  38 #include <connman/rtnl.h>
  39 #include <connman/log.h>
  40
  41 #include "inet.h"
  42 #include "supplicant.h"
  43
  44 struct wifi_data {
  45         GSList *list;
  46         gchar *identifier;
  47         gboolean connected;
  48 };
  49
  50 static int network_probe(struct connman_element *element)
  51 {
  52         DBG("element %p name %s", element, element->name);
  53
  54         return 0;
  55 }
  56
  57 static void network_remove(struct connman_element *element)
  58 {
  59         DBG("element %p name %s", element, element->name);
  60 }
  61
  62 static int network_enable(struct connman_element *element)
  63 {
  64         char *name, *security = NULL, *passphrase = NULL;
  65         unsigned char *ssid;
  66         int ssid_len;
  67
  68         DBG("element %p name %s", element, element->name);
  69
  70         if (connman_element_get_static_property(element,
  71                                                 "Name", &name) == FALSE)
  72                 return -EIO;
  73
  74         if (connman_element_get_static_array_property(element,
  75                                 "WiFi.SSID", &ssid, &ssid_len) == FALSE)
  76                 return -EIO;
  77
  78         if (element->parent != NULL) {
  79                 struct wifi_data *data = connman_element_get_data(element->parent);
  80
  81                 if (data->connected == TRUE)
  82                         return -EBUSY;
  83
  84                 if (data != NULL) {
  85                         g_free(data->identifier);
  86                         data->identifier = g_strdup(name);
  87                 }
  88         }
  89
  90         connman_element_get_value(element,
  91                         CONNMAN_PROPERTY_ID_WIFI_SECURITY, &security);
  92
  93         connman_element_get_value(element,
  94                         CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE, &passphrase);
  95
  96         DBG("name %s security %s passhprase %s",
  97                                         name, security, passphrase);
  98
  99         if (__supplicant_connect(element, ssid, ssid_len,
 100                                                 security, passphrase) < 0)
 101                 connman_error("Failed to initiate connect");
 102
 103         return 0;
 104 }
 105
 106 static int network_disable(struct connman_element *element)
 107 {
 108         DBG("element %p name %s", element, element->name);
 109
 110         connman_element_unregister_children(element);
 111
 112         __supplicant_disconnect(element);
 113
 114         return 0;
 115 }
 116
 117 static struct connman_driver network_driver = {
 118         .name           = "wifi-network",
 119         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 120         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 121         .probe          = network_probe,
 122         .remove         = network_remove,
 123         .enable         = network_enable,
 124         .disable        = network_disable,
 125 };
 126
 127 static struct connman_element *find_element(struct wifi_data *data,
 128                                                 const char *identifier)
 129 {
 130         GSList *list;
 131
 132         for (list = data->list; list; list = list->next) {
 133                 struct connman_element *element = list->data;
 134
 135                 if (connman_element_match_static_property(element,
 136                                         "Name", &identifier) == TRUE)
 137                         return element;
 138         }
 139
 140         return NULL;
 141 }
 142
 143 static void state_change(struct connman_element *parent,
 144                                                 enum supplicant_state state)
 145 {
 146         struct wifi_data *data = connman_element_get_data(parent);
 147         struct connman_element *element;
 148
 149         DBG("state %d", state);
 150
 151         if (data == NULL)
 152                 return;
 153
 154         if (data->identifier == NULL)
 155                 return;
 156
 157         element = find_element(data, data->identifier);
 158         if (element == NULL)
 159                 return;
 160
 161         if (state == STATE_COMPLETED) {
 162                 struct connman_element *dhcp;
 163
 164                 data->connected = TRUE;
 165
 166                 dhcp = connman_element_create(NULL);
 167
 168                 dhcp->type = CONNMAN_ELEMENT_TYPE_DHCP;
 169                 dhcp->index = element->index;
 170
 171                 connman_element_register(dhcp, element);
 172         } else if (state == STATE_DISCONNECTED || state == STATE_INACTIVE)
 173                 data->connected = FALSE;
 174 }
 175
 176 static void scan_result(struct connman_element *parent,
 177                                         struct supplicant_network *network)
 178 {
 179         struct wifi_data *data = connman_element_get_data(parent);
 180         struct connman_element *element;
 181         gchar *temp;
 182         int i;
 183
 184         DBG("network %p identifier %s", network, network->identifier);
 185
 186         if (data == NULL)
 187                 return;
 188
 189         if (network->identifier == NULL)
 190                 return;
 191
 192         if (network->identifier[0] == '\0')
 193                 return;
 194
 195         temp = g_strdup(network->identifier);
 196
 197         for (i = 0; i < strlen(temp); i++) {
 198                 if (temp[i] == ' ' || temp[i] == '.')
 199                         temp[i] = '_';
 200                 else if (temp[i] == '-' || temp[i] == '+')
 201                         temp[i] = '_';
 202                 else if (temp[i] == '!' || temp[i] == '?')
 203                         temp[i] = '_';
 204                 else if (temp[i] == '(' || temp[i] == ')')
 205                         temp[i] = '_';
 206                 else if (g_ascii_isprint(temp[i]) == FALSE)
 207                         temp[i] = '_';
 208                 temp[i] = g_ascii_tolower(temp[i]);
 209         }
 210
 211         element = find_element(data, network->identifier);
 212         if (element == NULL) {
 213                 guint8 strength;
 214
 215                 element = connman_element_create(temp);
 216
 217                 element->type = CONNMAN_ELEMENT_TYPE_NETWORK;
 218                 element->index = parent->index;
 219
 220                 data->list = g_slist_append(data->list, element);
 221
 222                 connman_element_add_static_property(element, "Name",
 223                                 DBUS_TYPE_STRING, &network->identifier);
 224
 225                 connman_element_add_static_array_property(element, "WiFi.SSID",
 226                         DBUS_TYPE_BYTE, &network->ssid, network->ssid_len);
 227
 228                 if (element->wifi.security == NULL) {
 229                         const char *security;
 230
 231                         if (network->has_rsn == TRUE)
 232                                 security = "wpa2";
 233                         else if (network->has_wpa == TRUE)
 234                                 security = "wpa";
 235                         else if (network->has_wep == TRUE)
 236                                 security = "wep";
 237                         else
 238                                 security = "none";
 239
 240                         element->wifi.security = g_strdup(security);
 241                 }
 242
 243                 strength = network->quality;
 244
 245                 connman_element_add_static_property(element, "WiFi.Strength",
 246                                                 DBUS_TYPE_BYTE, &strength);
 247
 248                 //connman_element_add_static_property(element, "WiFi.Noise",
 249                 //                      DBUS_TYPE_INT32, &network->noise);
 250
 251                 DBG("%s (%s) strength %d", network->identifier,
 252                                         element->wifi.security, strength);
 253
 254                 connman_element_register(element, parent);
 255         }
 256
 257         element->available = TRUE;
 258
 259         g_free(temp);
 260 }
 261
 262 static struct supplicant_callback wifi_callback = {
 263         .state_change   = state_change,
 264         .scan_result    = scan_result,
 265 };
 266
 267 static int wifi_probe(struct connman_element *element)
 268 {
 269         struct wifi_data *data;
 270
 271         DBG("element %p name %s", element, element->name);
 272
 273         data = g_try_new0(struct wifi_data, 1);
 274         if (data == NULL)
 275                 return -ENOMEM;
 276
 277         data->connected = FALSE;
 278
 279         connman_element_set_data(element, data);
 280
 281         return 0;
 282 }
 283
 284 static void wifi_remove(struct connman_element *element)
 285 {
 286         struct wifi_data *data = connman_element_get_data(element);
 287
 288         DBG("element %p name %s", element, element->name);
 289
 290         connman_element_set_data(element, NULL);
 291
 292         g_free(data->identifier);
 293         g_free(data);
 294 }
 295
 296 static int wifi_update(struct connman_element *element)
 297 {
 298         DBG("element %p name %s", element, element->name);
 299
 300         __supplicant_scan(element);
 301
 302         return 0;
 303 }
 304
 305 static int wifi_enable(struct connman_element *element)
 306 {
 307         int err;
 308
 309         DBG("element %p name %s", element, element->name);
 310
 311         err = __supplicant_start(element, &wifi_callback);
 312         if (err < 0)
 313                 return err;
 314
 315         __supplicant_scan(element);
 316
 317         return 0;
 318 }
 319
 320 static int wifi_disable(struct connman_element *element)
 321 {
 322         struct wifi_data *data = connman_element_get_data(element);
 323         GSList *list;
 324
 325         DBG("element %p name %s", element, element->name);
 326
 327         __supplicant_disconnect(element);
 328
 329         for (list = data->list; list; list = list->next) {
 330                 struct connman_element *network = list->data;
 331
 332                 connman_element_unref(network);
 333         }
 334
 335         g_slist_free(data->list);
 336         data->list = NULL;
 337
 338         connman_element_unregister_children(element);
 339
 340         __supplicant_stop(element);
 341
 342         return 0;
 343 }
 344
 345 static struct connman_driver wifi_driver = {
 346         .name           = "wifi-device",
 347         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
 348         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 349         .probe          = wifi_probe,
 350         .remove         = wifi_remove,
 351         .update         = wifi_update,
 352         .enable         = wifi_enable,
 353         .disable        = wifi_disable,
 354 };
 355
 356 static GSList *device_list = NULL;
 357
 358 static void wifi_newlink(unsigned short type, int index,
 359                                         unsigned flags, unsigned change)
 360 {
 361         struct connman_element *device;
 362         GSList *list;
 363         gboolean exists = FALSE;
 364         gchar *name, *devname;
 365         struct iwreq iwr;
 366         int sk;
 367
 368         DBG("index %d", index);
 369
 370         if (type != ARPHRD_ETHER)
 371                 return;
 372
 373         name = inet_index2ident(index, "dev_");
 374         devname = inet_index2name(index);
 375
 376         memset(&iwr, 0, sizeof(iwr));
 377         strncpy(iwr.ifr_ifrn.ifrn_name, devname, IFNAMSIZ);
 378
 379         sk = socket(PF_INET, SOCK_DGRAM, 0);
 380
 381         if (ioctl(sk, SIOCGIWNAME, &iwr) < 0) {
 382                 g_free(name);
 383                 close(sk);
 384                 return;
 385         }
 386
 387         close(sk);
 388
 389         for (list = device_list; list; list = list->next) {
 390                 struct connman_element *device = list->data;
 391
 392                 if (device->index == index) {
 393                         exists = TRUE;
 394                         break;
 395                 }
 396         }
 397
 398         if (exists == TRUE) {
 399                 g_free(name);
 400                 return;
 401         }
 402
 403         device = connman_element_create(NULL);
 404         device->type = CONNMAN_ELEMENT_TYPE_DEVICE;
 405         device->subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 406
 407         device->index = index;
 408         device->name = name;
 409         device->devname = devname;
 410
 411         connman_element_register(device, NULL);
 412         device_list = g_slist_append(device_list, device);
 413 }
 414
 415 static void wifi_dellink(unsigned short type, int index,
 416                                         unsigned flags, unsigned change)
 417 {
 418         GSList *list;
 419
 420         DBG("index %d", index);
 421
 422         for (list = device_list; list; list = list->next) {
 423                 struct connman_element *device = list->data;
 424
 425                 if (device->index == index) {
 426                         device_list = g_slist_remove(device_list, device);
 427                         connman_element_unregister(device);
 428                         connman_element_unref(device);
 429                         break;
 430                 }
 431         }
 432 }
 433
 434 static struct connman_rtnl wifi_rtnl = {
 435         .name           = "wifi",
 436         .newlink        = wifi_newlink,
 437         .dellink        = wifi_dellink,
 438 };
 439
 440 static void supplicant_connect(DBusConnection *connection, void *user_data)
 441 {
 442         DBG("connection %p", connection);
 443
 444         __supplicant_init(connection);
 445
 446         if (connman_rtnl_register(&wifi_rtnl) < 0)
 447                 return;
 448
 449         connman_rtnl_send_getlink();
 450 }
 451
 452 static void supplicant_disconnect(DBusConnection *connection, void *user_data)
 453 {
 454         GSList *list;
 455
 456         DBG("connection %p", connection);
 457
 458         connman_rtnl_unregister(&wifi_rtnl);
 459
 460         for (list = device_list; list; list = list->next) {
 461                 struct connman_element *device = list->data;
 462
 463                 connman_element_unregister(device);
 464                 connman_element_unref(device);
 465         }
 466
 467         g_slist_free(device_list);
 468         device_list = NULL;
 469
 470         __supplicant_exit();
 471 }
 472
 473 static DBusConnection *connection;
 474 static guint watch;
 475
 476 static int wifi_init(void)
 477 {
 478         int err;
 479
 480         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 481         if (connection == NULL)
 482                 return -EIO;
 483
 484         err = connman_driver_register(&network_driver);
 485         if (err < 0) {
 486                 dbus_connection_unref(connection);
 487                 return err;
 488         }
 489
 490         err = connman_driver_register(&wifi_driver);
 491         if (err < 0) {
 492                 connman_driver_unregister(&network_driver);
 493                 dbus_connection_unref(connection);
 494                 return err;
 495         }
 496
 497         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
 498                         supplicant_connect, supplicant_disconnect, NULL, NULL);
 499
 500         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
 501                 supplicant_connect(connection, NULL);
 502
 503         return 0;
 504 }
 505
 506 static void wifi_exit(void)
 507 {
 508         connman_driver_unregister(&network_driver);
 509         connman_driver_unregister(&wifi_driver);
 510
 511         if (watch > 0)
 512                 g_dbus_remove_watch(connection, watch);
 513
 514         supplicant_disconnect(connection, NULL);
 515
 516         dbus_connection_unref(connection);
 517 }
 518
 519 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 520                                                         wifi_init, wifi_exit)