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