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 #define CLEANUP_TIMEOUT   8     /* in seconds */
  45 #define INACTIVE_TIMEOUT  12    /* in seconds */
  46
  47 struct wifi_data {
  48         GSList *current;
  49         GSList *pending;
  50         guint cleanup_timer;
  51         guint inactive_timer;
  52         gchar *identifier;
  53         gboolean connected;
  54 };
  55
  56 static int network_probe(struct connman_element *element)
  57 {
  58         DBG("element %p name %s", element, element->name);
  59
  60         return 0;
  61 }
  62
  63 static void network_remove(struct connman_element *element)
  64 {
  65         DBG("element %p name %s", element, element->name);
  66 }
  67
  68 static int network_enable(struct connman_element *element)
  69 {
  70         char *name, *security = NULL, *passphrase = NULL;
  71         unsigned char *ssid;
  72         int ssid_len;
  73
  74         DBG("element %p name %s", element, element->name);
  75
  76         if (connman_element_get_static_property(element,
  77                                                 "Name", &name) == FALSE)
  78                 return -EIO;
  79
  80         if (connman_element_get_static_array_property(element,
  81                                 "WiFi.SSID", &ssid, &ssid_len) == FALSE)
  82                 return -EIO;
  83
  84         if (element->parent != NULL) {
  85                 struct wifi_data *data = connman_element_get_data(element->parent);
  86
  87                 if (data->connected == TRUE)
  88                         return -EBUSY;
  89
  90                 if (data != NULL) {
  91                         g_free(data->identifier);
  92                         data->identifier = g_strdup(name);
  93                 }
  94         }
  95
  96         connman_element_get_value(element,
  97                         CONNMAN_PROPERTY_ID_WIFI_SECURITY, &security);
  98
  99         connman_element_get_value(element,
 100                         CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE, &passphrase);
 101
 102         DBG("name %s security %s passhprase %s",
 103                                         name, security, passphrase);
 104
 105         if (__supplicant_connect(element, ssid, ssid_len,
 106                                                 security, passphrase) < 0)
 107                 connman_error("Failed to initiate connect");
 108
 109         return 0;
 110 }
 111
 112 static int network_disable(struct connman_element *element)
 113 {
 114         DBG("element %p name %s", element, element->name);
 115
 116         connman_element_unregister_children(element);
 117
 118         __supplicant_disconnect(element);
 119
 120         return 0;
 121 }
 122
 123 static struct connman_driver network_driver = {
 124         .name           = "wifi-network",
 125         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 126         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 127         .probe          = network_probe,
 128         .remove         = network_remove,
 129         .enable         = network_enable,
 130         .disable        = network_disable,
 131 };
 132
 133 static struct connman_element *find_current_element(struct wifi_data *data,
 134                                                         const char *identifier)
 135 {
 136         GSList *list;
 137
 138         for (list = data->current; list; list = list->next) {
 139                 struct connman_element *element = list->data;
 140
 141                 if (connman_element_match_static_property(element,
 142                                         "Name", &identifier) == TRUE)
 143                         return element;
 144         }
 145
 146         return NULL;
 147 }
 148
 149 static struct connman_element *find_pending_element(struct wifi_data *data,
 150                                                         const char *identifier)
 151 {
 152         GSList *list;
 153
 154         for (list = data->pending; list; list = list->next) {
 155                 struct connman_element *element = list->data;
 156
 157                 if (connman_element_match_static_property(element,
 158                                         "Name", &identifier) == TRUE)
 159                         return element;
 160         }
 161
 162         return NULL;
 163 }
 164
 165 static gboolean inactive_scan(gpointer user_data)
 166 {
 167         struct connman_element *device = user_data;
 168         struct wifi_data *data = connman_element_get_data(device);
 169
 170         DBG("");
 171
 172         if (data->cleanup_timer > 0) {
 173                 g_source_remove(data->cleanup_timer);
 174                 data->cleanup_timer = 0;
 175         }
 176
 177         __supplicant_scan(device);
 178
 179         data->inactive_timer = 0;
 180
 181         return FALSE;
 182 }
 183
 184 static void state_change(struct connman_element *parent,
 185                                                 enum supplicant_state state)
 186 {
 187         struct wifi_data *data = connman_element_get_data(parent);
 188         struct connman_element *element;
 189
 190         DBG("state %d", state);
 191
 192         if (state == STATE_INACTIVE && data->inactive_timer == 0)
 193                 data->inactive_timer = g_timeout_add_seconds(INACTIVE_TIMEOUT,
 194                                                         inactive_scan, parent);
 195
 196         if (data == NULL)
 197                 return;
 198
 199         if (data->identifier == NULL)
 200                 return;
 201
 202         element = find_current_element(data, data->identifier);
 203         if (element == NULL)
 204                 return;
 205
 206         if (state == STATE_COMPLETED) {
 207                 struct connman_element *dhcp;
 208
 209                 data->connected = TRUE;
 210
 211                 dhcp = connman_element_create(NULL);
 212
 213                 dhcp->type = CONNMAN_ELEMENT_TYPE_DHCP;
 214                 dhcp->index = element->index;
 215
 216                 connman_element_register(dhcp, element);
 217         } else if (state == STATE_DISCONNECTED || state == STATE_INACTIVE)
 218                 data->connected = FALSE;
 219 }
 220
 221 static gboolean cleanup_pending(gpointer user_data)
 222 {
 223         struct wifi_data *data = user_data;
 224         GSList *list;
 225
 226         DBG("");
 227
 228         for (list = data->pending; list; list = list->next) {
 229                 struct connman_element *element = list->data;
 230
 231                 DBG("element %p name %s", element, element->name);
 232
 233                 connman_element_unregister(element);
 234                 connman_element_unref(element);
 235         }
 236
 237         g_slist_free(data->pending);
 238         data->pending = NULL;
 239
 240         data->cleanup_timer = 0;
 241
 242         return FALSE;
 243 }
 244
 245 static void clear_results(struct connman_element *parent)
 246 {
 247         struct wifi_data *data = connman_element_get_data(parent);
 248
 249         DBG("pending %d", g_slist_length(data->pending));
 250         DBG("current %d", g_slist_length(data->current));
 251
 252         data->pending = data->current;
 253         data->current = NULL;
 254
 255         if (data->cleanup_timer > 0)
 256                 return;
 257
 258         data->cleanup_timer = g_timeout_add_seconds(CLEANUP_TIMEOUT,
 259                                                         cleanup_pending, data);
 260 }
 261
 262 static void scan_result(struct connman_element *parent,
 263                                         struct supplicant_network *network)
 264 {
 265         struct wifi_data *data = connman_element_get_data(parent);
 266         struct connman_element *element;
 267         gchar *temp;
 268         int i;
 269
 270         DBG("network %p identifier %s", network, network->identifier);
 271
 272         if (data == NULL)
 273                 return;
 274
 275         if (network->identifier == NULL)
 276                 return;
 277
 278         if (network->identifier[0] == '\0')
 279                 return;
 280
 281         temp = g_strdup(network->identifier);
 282
 283         for (i = 0; i < strlen(temp); i++) {
 284                 gchar tmp = g_ascii_tolower(temp[i]);
 285
 286                 if (tmp < 'a' || tmp > 'z')
 287                         temp[i] = '_';
 288         }
 289
 290         element = find_pending_element(data, network->identifier);
 291         if (element == NULL) {
 292                 guint8 strength;
 293
 294                 element = connman_element_create(temp);
 295
 296                 element->type = CONNMAN_ELEMENT_TYPE_NETWORK;
 297                 element->index = parent->index;
 298
 299                 connman_element_add_static_property(element, "Name",
 300                                 DBUS_TYPE_STRING, &network->identifier);
 301
 302                 connman_element_add_static_array_property(element, "WiFi.SSID",
 303                         DBUS_TYPE_BYTE, &network->ssid, network->ssid_len);
 304
 305                 if (element->wifi.security == NULL) {
 306                         const char *security;
 307
 308                         if (network->has_rsn == TRUE)
 309                                 security = "wpa2";
 310                         else if (network->has_wpa == TRUE)
 311                                 security = "wpa";
 312                         else if (network->has_wep == TRUE)
 313                                 security = "wep";
 314                         else
 315                                 security = "none";
 316
 317                         element->wifi.security = g_strdup(security);
 318                 }
 319
 320                 strength = network->quality;
 321
 322                 connman_element_add_static_property(element, "WiFi.Strength",
 323                                                 DBUS_TYPE_BYTE, &strength);
 324
 325                 //connman_element_add_static_property(element, "WiFi.Noise",
 326                 //                      DBUS_TYPE_INT32, &network->noise);
 327
 328                 DBG("%s (%s) strength %d", network->identifier,
 329                                         element->wifi.security, strength);
 330
 331                 connman_element_register(element, parent);
 332         } else
 333                 data->pending = g_slist_remove(data->pending, element);
 334
 335         data->current = g_slist_append(data->current, element);
 336
 337         element->available = TRUE;
 338
 339         g_free(temp);
 340 }
 341
 342 static struct supplicant_callback wifi_callback = {
 343         .state_change   = state_change,
 344         .clear_results  = clear_results,
 345         .scan_result    = scan_result,
 346 };
 347
 348 static int wifi_probe(struct connman_element *element)
 349 {
 350         struct wifi_data *data;
 351
 352         DBG("element %p name %s", element, element->name);
 353
 354         data = g_try_new0(struct wifi_data, 1);
 355         if (data == NULL)
 356                 return -ENOMEM;
 357
 358         data->connected = FALSE;
 359
 360         connman_element_set_data(element, data);
 361
 362         return 0;
 363 }
 364
 365 static void wifi_remove(struct connman_element *element)
 366 {
 367         struct wifi_data *data = connman_element_get_data(element);
 368
 369         DBG("element %p name %s", element, element->name);
 370
 371         connman_element_set_data(element, NULL);
 372
 373         g_free(data->identifier);
 374         g_free(data);
 375 }
 376
 377 static int wifi_update(struct connman_element *element)
 378 {
 379         DBG("element %p name %s", element, element->name);
 380
 381         __supplicant_scan(element);
 382
 383         return 0;
 384 }
 385
 386 static int wifi_enable(struct connman_element *element)
 387 {
 388         int err;
 389
 390         DBG("element %p name %s", element, element->name);
 391
 392         err = __supplicant_start(element, &wifi_callback);
 393         if (err < 0)
 394                 return err;
 395
 396         __supplicant_scan(element);
 397
 398         return 0;
 399 }
 400
 401 static int wifi_disable(struct connman_element *element)
 402 {
 403         struct wifi_data *data = connman_element_get_data(element);
 404         GSList *list;
 405
 406         DBG("element %p name %s", element, element->name);
 407
 408         if (data->cleanup_timer > 0) {
 409                 g_source_remove(data->cleanup_timer);
 410                 data->cleanup_timer = 0;
 411         }
 412
 413         if (data->inactive_timer > 0) {
 414                 g_source_remove(data->inactive_timer);
 415                 data->inactive_timer = 0;
 416         }
 417
 418         __supplicant_disconnect(element);
 419
 420         for (list = data->pending; list; list = list->next) {
 421                 struct connman_element *network = list->data;
 422
 423                 connman_element_unref(network);
 424         }
 425
 426         g_slist_free(data->pending);
 427         data->pending = NULL;
 428
 429         for (list = data->current; list; list = list->next) {
 430                 struct connman_element *network = list->data;
 431
 432                 connman_element_unref(network);
 433         }
 434
 435         g_slist_free(data->current);
 436         data->current = NULL;
 437
 438         connman_element_unregister_children(element);
 439
 440         __supplicant_stop(element);
 441
 442         return 0;
 443 }
 444
 445 static struct connman_driver wifi_driver = {
 446         .name           = "wifi-device",
 447         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
 448         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 449         .probe          = wifi_probe,
 450         .remove         = wifi_remove,
 451         .update         = wifi_update,
 452         .enable         = wifi_enable,
 453         .disable        = wifi_disable,
 454 };
 455
 456 static GSList *device_list = NULL;
 457
 458 static void wifi_newlink(unsigned short type, int index,
 459                                         unsigned flags, unsigned change)
 460 {
 461         struct connman_element *device;
 462         GSList *list;
 463         gboolean exists = FALSE;
 464         gchar *name, *devname;
 465         struct iwreq iwr;
 466         int sk;
 467
 468         DBG("index %d", index);
 469
 470         if (type != ARPHRD_ETHER)
 471                 return;
 472
 473         name = inet_index2ident(index, "dev_");
 474         devname = inet_index2name(index);
 475
 476         memset(&iwr, 0, sizeof(iwr));
 477         strncpy(iwr.ifr_ifrn.ifrn_name, devname, IFNAMSIZ);
 478
 479         sk = socket(PF_INET, SOCK_DGRAM, 0);
 480
 481         if (ioctl(sk, SIOCGIWNAME, &iwr) < 0) {
 482                 g_free(name);
 483                 close(sk);
 484                 return;
 485         }
 486
 487         close(sk);
 488
 489         for (list = device_list; list; list = list->next) {
 490                 struct connman_element *device = list->data;
 491
 492                 if (device->index == index) {
 493                         exists = TRUE;
 494                         break;
 495                 }
 496         }
 497
 498         if (exists == TRUE) {
 499                 g_free(name);
 500                 return;
 501         }
 502
 503         device = connman_element_create(NULL);
 504         device->type = CONNMAN_ELEMENT_TYPE_DEVICE;
 505         device->subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 506
 507         device->index = index;
 508         device->name = name;
 509         device->devname = devname;
 510
 511         connman_element_register(device, NULL);
 512         device_list = g_slist_append(device_list, device);
 513 }
 514
 515 static void wifi_dellink(unsigned short type, int index,
 516                                         unsigned flags, unsigned change)
 517 {
 518         GSList *list;
 519
 520         DBG("index %d", index);
 521
 522         for (list = device_list; list; list = list->next) {
 523                 struct connman_element *device = list->data;
 524
 525                 if (device->index == index) {
 526                         device_list = g_slist_remove(device_list, device);
 527                         connman_element_unregister(device);
 528                         connman_element_unref(device);
 529                         break;
 530                 }
 531         }
 532 }
 533
 534 static struct connman_rtnl wifi_rtnl = {
 535         .name           = "wifi",
 536         .newlink        = wifi_newlink,
 537         .dellink        = wifi_dellink,
 538 };
 539
 540 static void supplicant_connect(DBusConnection *connection, void *user_data)
 541 {
 542         DBG("connection %p", connection);
 543
 544         __supplicant_init(connection);
 545
 546         if (connman_rtnl_register(&wifi_rtnl) < 0)
 547                 return;
 548
 549         connman_rtnl_send_getlink();
 550 }
 551
 552 static void supplicant_disconnect(DBusConnection *connection, void *user_data)
 553 {
 554         GSList *list;
 555
 556         DBG("connection %p", connection);
 557
 558         connman_rtnl_unregister(&wifi_rtnl);
 559
 560         for (list = device_list; list; list = list->next) {
 561                 struct connman_element *device = list->data;
 562
 563                 connman_element_unregister(device);
 564                 connman_element_unref(device);
 565         }
 566
 567         g_slist_free(device_list);
 568         device_list = NULL;
 569
 570         __supplicant_exit();
 571 }
 572
 573 static DBusConnection *connection;
 574 static guint watch;
 575
 576 static int wifi_init(void)
 577 {
 578         int err;
 579
 580         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 581         if (connection == NULL)
 582                 return -EIO;
 583
 584         err = connman_driver_register(&network_driver);
 585         if (err < 0) {
 586                 dbus_connection_unref(connection);
 587                 return err;
 588         }
 589
 590         err = connman_driver_register(&wifi_driver);
 591         if (err < 0) {
 592                 connman_driver_unregister(&network_driver);
 593                 dbus_connection_unref(connection);
 594                 return err;
 595         }
 596
 597         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
 598                         supplicant_connect, supplicant_disconnect, NULL, NULL);
 599
 600         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
 601                 supplicant_connect(connection, NULL);
 602
 603         return 0;
 604 }
 605
 606 static void wifi_exit(void)
 607 {
 608         connman_driver_unregister(&network_driver);
 609         connman_driver_unregister(&wifi_driver);
 610
 611         if (watch > 0)
 612                 g_dbus_remove_watch(connection, watch);
 613
 614         supplicant_disconnect(connection, NULL);
 615
 616         dbus_connection_unref(connection);
 617 }
 618
 619 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 620                                                         wifi_init, wifi_exit)