plugins/wifi.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 <unistd.h>
  27 #include <stdlib.h>
  28 #include <errno.h>
  29 #include <string.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32 #include <linux/if_arp.h>
  33 #include <linux/wireless.h>
  34 #include <net/ethernet.h>
  35
  36 #ifndef IFF_LOWER_UP
  37 #define IFF_LOWER_UP    0x10000
  38 #endif
  39
  40 #include <dbus/dbus.h>
  41 #include <glib.h>
  42
  43 #define CONNMAN_API_SUBJECT_TO_CHANGE
  44 #include <connman/plugin.h>
  45 #include <connman/inet.h>
  46 #include <connman/device.h>
  47 #include <connman/rtnl.h>
  48 #include <connman/technology.h>
  49 #include <connman/log.h>
  50 #include <connman/option.h>
  51
  52 #include <gsupplicant/gsupplicant.h>
  53
  54 #define CLEANUP_TIMEOUT   8     /* in seconds */
  55 #define INACTIVE_TIMEOUT  12    /* in seconds */
  56
  57 struct connman_technology *wifi_technology = NULL;
  58
  59 struct wifi_data {
  60         char *identifier;
  61         struct connman_device *device;
  62         struct connman_network *network;
  63         struct connman_network *pending_network;
  64         GSList *networks;
  65         GSupplicantInterface *interface;
  66         GSupplicantState state;
  67         connman_bool_t connected;
  68         connman_bool_t disconnecting;
  69         connman_bool_t tethering;
  70         connman_bool_t bridged;
  71         const char *bridge;
  72         int index;
  73         unsigned flags;
  74         unsigned int watch;
  75 };
  76
  77 static GList *iface_list = NULL;
  78
  79 static void handle_tethering(struct wifi_data *wifi)
  80 {
  81         if (wifi->tethering == FALSE)
  82                 return;
  83
  84         if (wifi->bridge == NULL)
  85                 return;
  86
  87         if (wifi->bridged == TRUE)
  88                 return;
  89
  90         DBG("index %d bridge %s", wifi->index, wifi->bridge);
  91
  92         if (connman_inet_add_to_bridge(wifi->index, wifi->bridge) < 0)
  93                 return;
  94
  95         wifi->bridged = TRUE;
  96 }
  97
  98 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
  99 {
 100         struct connman_device *device = user_data;
 101         struct wifi_data *wifi = connman_device_get_data(device);
 102
 103         DBG("index %d flags %d change %d", wifi->index, flags, change);
 104
 105         if (!change)
 106                 return;
 107
 108         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 109                 if (flags & IFF_UP)
 110                         DBG("interface up");
 111                 else
 112                         DBG("interface down");
 113         }
 114
 115         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 116                 if (flags & IFF_LOWER_UP) {
 117                         DBG("carrier on");
 118
 119                         handle_tethering(wifi);
 120                 } else
 121                         DBG("carrier off");
 122         }
 123
 124         wifi->flags = flags;
 125 }
 126
 127 static int wifi_probe(struct connman_device *device)
 128 {
 129         struct wifi_data *wifi;
 130
 131         DBG("device %p", device);
 132
 133         wifi = g_try_new0(struct wifi_data, 1);
 134         if (wifi == NULL)
 135                 return -ENOMEM;
 136
 137         wifi->connected = FALSE;
 138         wifi->disconnecting = FALSE;
 139         wifi->tethering = FALSE;
 140         wifi->bridged = FALSE;
 141         wifi->bridge = NULL;
 142         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 143
 144         connman_device_set_data(device, wifi);
 145         wifi->device = connman_device_ref(device);
 146
 147         wifi->index = connman_device_get_index(device);
 148         wifi->flags = 0;
 149
 150         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 151                                                         wifi_newlink, device);
 152
 153         iface_list = g_list_append(iface_list, wifi);
 154
 155         return 0;
 156 }
 157
 158 static void remove_networks(struct connman_device *device,
 159                                 struct wifi_data *wifi)
 160 {
 161         GSList *list;
 162
 163         for (list = wifi->networks; list != NULL; list = list->next) {
 164                 struct connman_network *network = list->data;
 165
 166                 connman_device_remove_network(device, network);
 167                 connman_network_unref(network);
 168         }
 169
 170         g_slist_free(wifi->networks);
 171         wifi->networks = NULL;
 172 }
 173
 174 static void wifi_remove(struct connman_device *device)
 175 {
 176         struct wifi_data *wifi = connman_device_get_data(device);
 177
 178         DBG("device %p", device);
 179
 180         if (wifi == NULL)
 181                 return;
 182
 183         iface_list = g_list_remove(iface_list, wifi);
 184
 185         remove_networks(device, wifi);
 186
 187         connman_device_set_data(device, NULL);
 188         connman_device_unref(wifi->device);
 189         connman_rtnl_remove_watch(wifi->watch);
 190
 191         g_supplicant_interface_set_data(wifi->interface, NULL);
 192
 193         g_free(wifi->identifier);
 194         g_free(wifi);
 195 }
 196
 197 static void interface_create_callback(int result,
 198                                         GSupplicantInterface *interface,
 199                                                         void *user_data)
 200 {
 201         struct wifi_data *wifi = user_data;
 202
 203         DBG("result %d ifname %s, wifi %p", result,
 204                                 g_supplicant_interface_get_ifname(interface),
 205                                 wifi);
 206
 207         if (result < 0 || wifi == NULL)
 208                 return;
 209
 210         wifi->interface = interface;
 211         g_supplicant_interface_set_data(interface, wifi);
 212 }
 213
 214 static void interface_remove_callback(int result,
 215                                         GSupplicantInterface *interface,
 216                                                         void *user_data)
 217 {
 218         struct wifi_data *wifi = user_data;
 219
 220         DBG("result %d wifi %p", result, wifi);
 221
 222         if (result < 0 || wifi == NULL)
 223                 return;
 224
 225         wifi->interface = NULL;
 226 }
 227
 228
 229 static int wifi_enable(struct connman_device *device)
 230 {
 231         struct wifi_data *wifi = connman_device_get_data(device);
 232         const char *interface = connman_device_get_string(device, "Interface");
 233         const char *driver = connman_option_get_string("wifi");
 234         int ret;
 235
 236         DBG("device %p %p", device, wifi);
 237
 238         ret = g_supplicant_interface_create(interface, driver, NULL,
 239                                                 interface_create_callback,
 240                                                         wifi);
 241         if (ret < 0)
 242                 return ret;
 243
 244         return -EINPROGRESS;
 245 }
 246
 247 static int wifi_disable(struct connman_device *device)
 248 {
 249         struct wifi_data *wifi = connman_device_get_data(device);
 250         int ret;
 251
 252         DBG("device %p", device);
 253
 254         wifi->connected = FALSE;
 255         wifi->disconnecting = FALSE;
 256
 257         if (wifi->pending_network != NULL)
 258                 wifi->pending_network = NULL;
 259
 260         remove_networks(device, wifi);
 261
 262         ret = g_supplicant_interface_remove(wifi->interface,
 263                                                 interface_remove_callback,
 264                                                         wifi);
 265         if (ret < 0)
 266                 return ret;
 267
 268         return -EINPROGRESS;
 269 }
 270
 271 static void scan_callback(int result, GSupplicantInterface *interface,
 272                                                 void *user_data)
 273 {
 274         struct connman_device *device = user_data;
 275
 276         DBG("result %d", result);
 277
 278         if (result < 0)
 279                 connman_device_reset_scanning(device);
 280         else
 281                 connman_device_set_scanning(device, FALSE);
 282         connman_device_unref(device);
 283 }
 284
 285 static int wifi_scan(struct connman_device *device)
 286 {
 287         struct wifi_data *wifi = connman_device_get_data(device);
 288         int ret;
 289
 290         DBG("device %p %p", device, wifi->interface);
 291
 292         if (wifi->tethering == TRUE)
 293                 return 0;
 294
 295         connman_device_ref(device);
 296         ret = g_supplicant_interface_scan(wifi->interface, scan_callback,
 297                                                                 device);
 298         if (ret == 0)
 299                 connman_device_set_scanning(device, TRUE);
 300         else
 301                 connman_device_unref(device);
 302
 303         return ret;
 304 }
 305
 306 static int wifi_scan_fast(struct connman_device *device)
 307 {
 308         struct wifi_data *wifi = connman_device_get_data(device);
 309         int ret;
 310
 311         DBG("device %p %p", device, wifi->interface);
 312
 313         if (wifi->tethering == TRUE)
 314                 return 0;
 315
 316         ret = g_supplicant_interface_scan(wifi->interface, scan_callback,
 317                                                                         device);
 318         if (ret == 0)
 319                 connman_device_set_scanning(device, TRUE);
 320
 321         return ret;
 322 }
 323
 324 static struct connman_device_driver wifi_ng_driver = {
 325         .name           = "wifi",
 326         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 327         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 328         .probe          = wifi_probe,
 329         .remove         = wifi_remove,
 330         .enable         = wifi_enable,
 331         .disable        = wifi_disable,
 332         .scan           = wifi_scan,
 333         .scan_fast      = wifi_scan_fast,
 334 };
 335
 336 static void system_ready(void)
 337 {
 338         DBG("");
 339
 340         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 341                 connman_error("Failed to register WiFi driver");
 342 }
 343
 344 static void system_killed(void)
 345 {
 346         DBG("");
 347
 348         connman_device_driver_unregister(&wifi_ng_driver);
 349 }
 350
 351 static int network_probe(struct connman_network *network)
 352 {
 353         DBG("network %p", network);
 354
 355         return 0;
 356 }
 357
 358 static void network_remove(struct connman_network *network)
 359 {
 360         struct connman_device *device = connman_network_get_device(network);
 361         struct wifi_data *wifi;
 362
 363         DBG("network %p", network);
 364
 365         wifi = connman_device_get_data(device);
 366         if (wifi == NULL)
 367                 return;
 368
 369         if (wifi->network != network)
 370                 return;
 371
 372         wifi->network = NULL;
 373 }
 374
 375 static void connect_callback(int result, GSupplicantInterface *interface,
 376                                                         void *user_data)
 377 {
 378         struct connman_network *network = user_data;
 379
 380         DBG("network %p result %d", network, result);
 381
 382         if (result == -ENOKEY) {
 383                 connman_network_set_error(network,
 384                                         CONNMAN_NETWORK_ERROR_INVALID_KEY);
 385         } else if (result < 0) {
 386                 connman_network_set_error(network,
 387                                         CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
 388         }
 389 }
 390
 391 static GSupplicantSecurity network_security(const char *security)
 392 {
 393         if (g_str_equal(security, "none") == TRUE)
 394                 return G_SUPPLICANT_SECURITY_NONE;
 395         else if (g_str_equal(security, "wep") == TRUE)
 396                 return G_SUPPLICANT_SECURITY_WEP;
 397         else if (g_str_equal(security, "psk") == TRUE)
 398                 return G_SUPPLICANT_SECURITY_PSK;
 399         else if (g_str_equal(security, "wpa") == TRUE)
 400                 return G_SUPPLICANT_SECURITY_PSK;
 401         else if (g_str_equal(security, "rsn") == TRUE)
 402                 return G_SUPPLICANT_SECURITY_PSK;
 403         else if (g_str_equal(security, "ieee8021x") == TRUE)
 404                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 405
 406         return G_SUPPLICANT_SECURITY_UNKNOWN;
 407 }
 408
 409 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 410 {
 411         const char *security, *passphrase, *agent_passphrase;
 412
 413         memset(ssid, 0, sizeof(*ssid));
 414         ssid->mode = G_SUPPLICANT_MODE_INFRA;
 415         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 416                                                 &ssid->ssid_len);
 417         ssid->scan_ssid = 1;
 418         security = connman_network_get_string(network, "WiFi.Security");
 419         ssid->security = network_security(security);
 420         passphrase = connman_network_get_string(network,
 421                                                 "WiFi.Passphrase");
 422         if (passphrase == NULL || strlen(passphrase) == 0) {
 423
 424                 /* Use agent provided passphrase as a fallback */
 425                 agent_passphrase = connman_network_get_string(network,
 426                                                 "WiFi.AgentPassphrase");
 427
 428                 if (agent_passphrase == NULL || strlen(agent_passphrase) == 0)
 429                         ssid->passphrase = NULL;
 430                 else
 431                         ssid->passphrase = agent_passphrase;
 432         } else
 433                 ssid->passphrase = passphrase;
 434
 435         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 436
 437         /*
 438          * If our private key password is unset,
 439          * we use the supplied passphrase. That is needed
 440          * for PEAP where 2 passphrases (identity and client
 441          * cert may have to be provided.
 442          */
 443         if (connman_network_get_string(network,
 444                                         "WiFi.PrivateKeyPassphrase") == NULL)
 445                 connman_network_set_string(network,
 446                                                 "WiFi.PrivateKeyPassphrase",
 447                                                 ssid->passphrase);
 448         /* We must have an identity for both PEAP and TLS */
 449         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 450
 451         /* Use agent provided identity as a fallback */
 452         if (ssid->identity == NULL || strlen(ssid->identity) == 0)
 453                 ssid->identity = connman_network_get_string(network,
 454                                                         "WiFi.AgentIdentity");
 455
 456         ssid->ca_cert_path = connman_network_get_string(network,
 457                                                         "WiFi.CACertFile");
 458         ssid->client_cert_path = connman_network_get_string(network,
 459                                                         "WiFi.ClientCertFile");
 460         ssid->private_key_path = connman_network_get_string(network,
 461                                                         "WiFi.PrivateKeyFile");
 462         ssid->private_key_passphrase = connman_network_get_string(network,
 463                                                 "WiFi.PrivateKeyPassphrase");
 464         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 465
 466         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
 467         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
 468
 469 }
 470
 471 static int network_connect(struct connman_network *network)
 472 {
 473         struct connman_device *device = connman_network_get_device(network);
 474         struct wifi_data *wifi;
 475         GSupplicantInterface *interface;
 476         GSupplicantSSID *ssid;
 477
 478         DBG("network %p", network);
 479
 480         if (device == NULL)
 481                 return -ENODEV;
 482
 483         wifi = connman_device_get_data(device);
 484         if (wifi == NULL)
 485                 return -ENODEV;
 486
 487         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
 488         if (ssid == NULL)
 489                 return -ENOMEM;
 490
 491         interface = wifi->interface;
 492
 493         ssid_init(ssid, network);
 494
 495         if (wifi->disconnecting == TRUE)
 496                 wifi->pending_network = network;
 497         else {
 498                 wifi->network = network;
 499
 500                 return g_supplicant_interface_connect(interface, ssid,
 501                                                 connect_callback, network);
 502         }
 503
 504         return -EINPROGRESS;
 505 }
 506
 507 static void disconnect_callback(int result, GSupplicantInterface *interface,
 508                                                                 void *user_data)
 509 {
 510         struct wifi_data *wifi = user_data;
 511
 512         if (wifi->network != NULL) {
 513                 /*
 514                  * if result < 0 supplican return an error because
 515                  * the network is not current.
 516                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 517                  * failed, call connman_network_set_connected to report
 518                  * disconnect is completed.
 519                  */
 520                 if (result < 0)
 521                         connman_network_set_connected(wifi->network, FALSE);
 522         }
 523
 524         wifi->network = NULL;
 525
 526         wifi->disconnecting = FALSE;
 527
 528         if (wifi->pending_network != NULL) {
 529                 network_connect(wifi->pending_network);
 530                 wifi->pending_network = NULL;
 531         }
 532
 533 }
 534
 535 static int network_disconnect(struct connman_network *network)
 536 {
 537         struct connman_device *device = connman_network_get_device(network);
 538         struct wifi_data *wifi;
 539         int err;
 540
 541         DBG("network %p", network);
 542
 543         wifi = connman_device_get_data(device);
 544         if (wifi == NULL || wifi->interface == NULL)
 545                 return -ENODEV;
 546
 547         connman_network_set_associating(network, FALSE);
 548
 549         if (wifi->disconnecting == TRUE)
 550                 return -EALREADY;
 551
 552         wifi->disconnecting = TRUE;
 553
 554         err = g_supplicant_interface_disconnect(wifi->interface,
 555                                                 disconnect_callback, wifi);
 556         if (err < 0)
 557                 wifi->disconnecting = FALSE;
 558
 559         return err;
 560 }
 561
 562 static struct connman_network_driver network_driver = {
 563         .name           = "wifi",
 564         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 565         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 566         .probe          = network_probe,
 567         .remove         = network_remove,
 568         .connect        = network_connect,
 569         .disconnect     = network_disconnect,
 570 };
 571
 572 static void interface_added(GSupplicantInterface *interface)
 573 {
 574         const char *ifname = g_supplicant_interface_get_ifname(interface);
 575         const char *driver = g_supplicant_interface_get_driver(interface);
 576         struct wifi_data *wifi;
 577
 578         wifi = g_supplicant_interface_get_data(interface);
 579
 580         /*
 581          * We can get here with a NULL wifi pointer when
 582          * the interface added signal is sent before the
 583          * interface creation callback is called.
 584          */
 585         if (wifi == NULL)
 586                 return;
 587
 588         DBG("ifname %s driver %s wifi %p tethering %d",
 589                         ifname, driver, wifi, wifi->tethering);
 590
 591         if (wifi->device == NULL) {
 592                 connman_error("WiFi device not set");
 593                 return;
 594         }
 595
 596         connman_device_set_powered(wifi->device, TRUE);
 597
 598         if (wifi->tethering == TRUE)
 599                 return;
 600 }
 601
 602 static connman_bool_t is_idle(struct wifi_data *wifi)
 603 {
 604         DBG("state %d", wifi->state);
 605
 606         switch (wifi->state) {
 607         case G_SUPPLICANT_STATE_UNKNOWN:
 608         case G_SUPPLICANT_STATE_DISCONNECTED:
 609         case G_SUPPLICANT_STATE_INACTIVE:
 610         case G_SUPPLICANT_STATE_SCANNING:
 611                 return TRUE;
 612
 613         case G_SUPPLICANT_STATE_AUTHENTICATING:
 614         case G_SUPPLICANT_STATE_ASSOCIATING:
 615         case G_SUPPLICANT_STATE_ASSOCIATED:
 616         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 617         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 618         case G_SUPPLICANT_STATE_COMPLETED:
 619                 return FALSE;
 620         }
 621
 622         return FALSE;
 623 }
 624
 625 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
 626                                                 struct wifi_data *wifi)
 627 {
 628         /* First, let's check if WPS processing did not went wrong */
 629         if (g_supplicant_interface_get_wps_state(interface) ==
 630                 G_SUPPLICANT_WPS_STATE_FAIL)
 631                 return FALSE;
 632
 633         /* Unlike normal connection, being associated while processing wps
 634          * actually means that we are idling. */
 635         switch (wifi->state) {
 636         case G_SUPPLICANT_STATE_UNKNOWN:
 637         case G_SUPPLICANT_STATE_DISCONNECTED:
 638         case G_SUPPLICANT_STATE_INACTIVE:
 639         case G_SUPPLICANT_STATE_SCANNING:
 640         case G_SUPPLICANT_STATE_ASSOCIATED:
 641                 return TRUE;
 642         case G_SUPPLICANT_STATE_AUTHENTICATING:
 643         case G_SUPPLICANT_STATE_ASSOCIATING:
 644         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 645         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 646         case G_SUPPLICANT_STATE_COMPLETED:
 647                 return FALSE;
 648         }
 649
 650         return FALSE;
 651 }
 652
 653 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
 654                                         struct connman_network *network,
 655                                         struct connman_device *device,
 656                                         struct wifi_data *wifi)
 657 {
 658         connman_bool_t wps;
 659
 660         wps = connman_network_get_bool(network, "WiFi.UseWPS");
 661         if (wps == TRUE) {
 662                 const unsigned char *ssid, *wps_ssid;
 663                 unsigned int ssid_len, wps_ssid_len;
 664                 const char *wps_key;
 665
 666                 /* Checking if we got associated with requested
 667                  * network */
 668                 ssid = connman_network_get_blob(network, "WiFi.SSID",
 669                                                 &ssid_len);
 670
 671                 wps_ssid = g_supplicant_interface_get_wps_ssid(
 672                         interface, &wps_ssid_len);
 673
 674                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
 675                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
 676                         connman_network_set_associating(network, FALSE);
 677                         g_supplicant_interface_disconnect(wifi->interface,
 678                                                 disconnect_callback, wifi);
 679                         return FALSE;
 680                 }
 681
 682                 wps_key = g_supplicant_interface_get_wps_key(interface);
 683                 connman_network_set_string(network, "WiFi.Passphrase",
 684                                         wps_key);
 685
 686                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
 687         }
 688
 689         return TRUE;
 690 }
 691
 692 static void interface_state(GSupplicantInterface *interface)
 693 {
 694         struct connman_network *network;
 695         struct connman_device *device;
 696         struct wifi_data *wifi;
 697         GSupplicantState state = g_supplicant_interface_get_state(interface);
 698         connman_bool_t wps;
 699
 700         wifi = g_supplicant_interface_get_data(interface);
 701
 702         DBG("wifi %p interface state %d", wifi, state);
 703
 704         if (wifi == NULL)
 705                 return;
 706
 707         network = wifi->network;
 708         device = wifi->device;
 709
 710         if (device == NULL || network == NULL)
 711                 return;
 712
 713         switch (state) {
 714         case G_SUPPLICANT_STATE_SCANNING:
 715                 break;
 716
 717         case G_SUPPLICANT_STATE_AUTHENTICATING:
 718         case G_SUPPLICANT_STATE_ASSOCIATING:
 719                 connman_network_set_associating(network, TRUE);
 720                 break;
 721
 722         case G_SUPPLICANT_STATE_COMPLETED:
 723                 if (handle_wps_completion(interface, network, device, wifi) ==
 724                                                                         FALSE)
 725                         break;
 726
 727                 /* reset scan trigger and schedule background scan */
 728                 connman_device_schedule_scan(device);
 729
 730                 connman_network_set_connected(network, TRUE);
 731                 break;
 732
 733         case G_SUPPLICANT_STATE_DISCONNECTED:
 734                 /*
 735                  * If we're in one of the idle modes, we have
 736                  * not started association yet and thus setting
 737                  * those ones to FALSE could cancel an association
 738                  * in progress.
 739                  */
 740                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
 741                 if (wps == TRUE)
 742                         if (is_idle_wps(interface, wifi) == TRUE)
 743                                 break;
 744
 745                 if (is_idle(wifi))
 746                         break;
 747                 connman_network_set_associating(network, FALSE);
 748                 connman_network_set_connected(network, FALSE);
 749                 break;
 750
 751         case G_SUPPLICANT_STATE_INACTIVE:
 752                 connman_network_set_associating(network, FALSE);
 753                 break;
 754
 755         case G_SUPPLICANT_STATE_UNKNOWN:
 756         case G_SUPPLICANT_STATE_ASSOCIATED:
 757         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 758         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 759                 break;
 760         }
 761
 762         wifi->state = state;
 763
 764         DBG("DONE");
 765 }
 766
 767 static void interface_removed(GSupplicantInterface *interface)
 768 {
 769         const char *ifname = g_supplicant_interface_get_ifname(interface);
 770         struct wifi_data *wifi;
 771
 772         DBG("ifname %s", ifname);
 773
 774         wifi = g_supplicant_interface_get_data(interface);
 775
 776         if (wifi != NULL && wifi->tethering == TRUE)
 777                 return;
 778
 779         if (wifi == NULL || wifi->device == NULL) {
 780                 connman_error("Wrong wifi pointer");
 781                 return;
 782         }
 783
 784         connman_device_set_powered(wifi->device, FALSE);
 785 }
 786
 787 static void scan_started(GSupplicantInterface *interface)
 788 {
 789         DBG("");
 790 }
 791
 792 static void scan_finished(GSupplicantInterface *interface)
 793 {
 794         DBG("");
 795 }
 796
 797 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
 798 {
 799         unsigned char strength;
 800
 801         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
 802         if (strength > 100)
 803                 strength = 100;
 804
 805         return strength;
 806 }
 807
 808 static void network_added(GSupplicantNetwork *supplicant_network)
 809 {
 810         struct connman_network *network;
 811         GSupplicantInterface *interface;
 812         struct wifi_data *wifi;
 813         const char *name, *identifier, *security, *group;
 814         const unsigned char *ssid;
 815         unsigned int ssid_len;
 816         connman_bool_t wps;
 817
 818         DBG("");
 819
 820         interface = g_supplicant_network_get_interface(supplicant_network);
 821         wifi = g_supplicant_interface_get_data(interface);
 822         name = g_supplicant_network_get_name(supplicant_network);
 823         identifier = g_supplicant_network_get_identifier(supplicant_network);
 824         security = g_supplicant_network_get_security(supplicant_network);
 825         group = g_supplicant_network_get_identifier(supplicant_network);
 826         wps = g_supplicant_network_get_wps(supplicant_network);
 827
 828         if (wifi == NULL)
 829                 return;
 830
 831         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
 832
 833         network = connman_device_get_network(wifi->device, identifier);
 834
 835         if (network == NULL) {
 836                 network = connman_network_create(identifier,
 837                                                 CONNMAN_NETWORK_TYPE_WIFI);
 838                 if (network == NULL)
 839                         return;
 840
 841                 connman_network_set_index(network, wifi->index);
 842
 843                 if (connman_device_add_network(wifi->device, network) < 0) {
 844                         connman_network_unref(network);
 845                         return;
 846                 }
 847
 848                 wifi->networks = g_slist_append(wifi->networks, network);
 849         }
 850
 851         if (name != NULL && name[0] != '\0')
 852                 connman_network_set_name(network, name);
 853
 854         connman_network_set_blob(network, "WiFi.SSID",
 855                                                 ssid, ssid_len);
 856         connman_network_set_string(network, "WiFi.Security", security);
 857         connman_network_set_strength(network,
 858                                 calculate_strength(supplicant_network));
 859         connman_network_set_bool(network, "WiFi.WPS", wps);
 860
 861         connman_network_set_frequency(network,
 862                         g_supplicant_network_get_frequency(supplicant_network));
 863
 864         connman_network_set_available(network, TRUE);
 865
 866         if (ssid != NULL)
 867                 connman_network_set_group(network, group);
 868 }
 869
 870 static void network_removed(GSupplicantNetwork *network)
 871 {
 872         GSupplicantInterface *interface;
 873         struct wifi_data *wifi;
 874         const char *name, *identifier;
 875         struct connman_network *connman_network;
 876
 877         interface = g_supplicant_network_get_interface(network);
 878         wifi = g_supplicant_interface_get_data(interface);
 879         identifier = g_supplicant_network_get_identifier(network);
 880         name = g_supplicant_network_get_name(network);
 881
 882         DBG("name %s", name);
 883
 884         if (wifi == NULL)
 885                 return;
 886
 887         connman_network = connman_device_get_network(wifi->device, identifier);
 888         if (connman_network == NULL)
 889                 return;
 890
 891         wifi->networks = g_slist_remove(wifi->networks, connman_network);
 892
 893         connman_device_remove_network(wifi->device, connman_network);
 894         connman_network_unref(connman_network);
 895 }
 896
 897 static void network_changed(GSupplicantNetwork *network, const char *property)
 898 {
 899         GSupplicantInterface *interface;
 900         struct wifi_data *wifi;
 901         const char *name, *identifier;
 902         struct connman_network *connman_network;
 903
 904         interface = g_supplicant_network_get_interface(network);
 905         wifi = g_supplicant_interface_get_data(interface);
 906         identifier = g_supplicant_network_get_identifier(network);
 907         name = g_supplicant_network_get_name(network);
 908
 909         DBG("name %s", name);
 910
 911         if (wifi == NULL)
 912                 return;
 913
 914         connman_network = connman_device_get_network(wifi->device, identifier);
 915         if (connman_network == NULL)
 916                 return;
 917
 918         if (g_str_equal(property, "Signal") == TRUE) {
 919                connman_network_set_strength(connman_network,
 920                                         calculate_strength(network));
 921                connman_network_update(connman_network);
 922         }
 923 }
 924
 925 static void debug(const char *str)
 926 {
 927         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
 928                 connman_debug("%s", str);
 929 }
 930
 931 static const GSupplicantCallbacks callbacks = {
 932         .system_ready           = system_ready,
 933         .system_killed          = system_killed,
 934         .interface_added        = interface_added,
 935         .interface_state        = interface_state,
 936         .interface_removed      = interface_removed,
 937         .scan_started           = scan_started,
 938         .scan_finished          = scan_finished,
 939         .network_added          = network_added,
 940         .network_removed        = network_removed,
 941         .network_changed        = network_changed,
 942         .debug                  = debug,
 943 };
 944
 945
 946 static int tech_probe(struct connman_technology *technology)
 947 {
 948         wifi_technology = technology;
 949
 950         return 0;
 951 }
 952
 953 static void tech_remove(struct connman_technology *technology)
 954 {
 955         wifi_technology = NULL;
 956 }
 957
 958 struct wifi_tethering_info {
 959         struct wifi_data *wifi;
 960         struct connman_technology *technology;
 961         char *ifname;
 962         GSupplicantSSID *ssid;
 963 };
 964
 965 static GSupplicantSSID *ssid_ap_init(const char *ssid, const char *passphrase)
 966 {
 967         GSupplicantSSID *ap;
 968
 969         ap = g_try_malloc0(sizeof(GSupplicantSSID));
 970         if (ap == NULL)
 971                 return NULL;
 972
 973         ap->mode = G_SUPPLICANT_MODE_MASTER;
 974         ap->ssid = ssid;
 975         ap->ssid_len = strlen(ssid);
 976         ap->scan_ssid = 0;
 977         ap->freq = 2412;
 978
 979         if (passphrase == NULL || strlen(passphrase) == 0) {
 980                 ap->security = G_SUPPLICANT_SECURITY_NONE;
 981                 ap->passphrase = NULL;
 982         } else {
 983                ap->security = G_SUPPLICANT_SECURITY_PSK;
 984                ap->protocol = G_SUPPLICANT_PROTO_RSN;
 985                ap->pairwise_cipher = G_SUPPLICANT_PAIRWISE_CCMP;
 986                ap->group_cipher = G_SUPPLICANT_GROUP_CCMP;
 987                ap->passphrase = passphrase;
 988         }
 989
 990         return ap;
 991 }
 992
 993 static void ap_start_callback(int result, GSupplicantInterface *interface,
 994                                                         void *user_data)
 995 {
 996         struct wifi_tethering_info *info = user_data;
 997
 998         DBG("result %d index %d bridge %s",
 999                 result, info->wifi->index, info->wifi->bridge);
1000
1001         if (result < 0) {
1002                 connman_inet_remove_from_bridge(info->wifi->index,
1003                                                         info->wifi->bridge);
1004                 connman_technology_tethering_notify(info->technology, FALSE);
1005         }
1006
1007         g_free(info->ifname);
1008         g_free(info);
1009 }
1010
1011 static void ap_create_callback(int result,
1012                                 GSupplicantInterface *interface,
1013                                         void *user_data)
1014 {
1015         struct wifi_tethering_info *info = user_data;
1016
1017         DBG("result %d ifname %s", result,
1018                                 g_supplicant_interface_get_ifname(interface));
1019
1020         if (result < 0) {
1021                 connman_inet_remove_from_bridge(info->wifi->index,
1022                                                         info->wifi->bridge);
1023                 connman_technology_tethering_notify(info->technology, FALSE);
1024
1025                 g_free(info->ifname);
1026                 g_free(info);
1027                 return;
1028         }
1029
1030         info->wifi->interface = interface;
1031         g_supplicant_interface_set_data(interface, info->wifi);
1032
1033         if (g_supplicant_interface_set_apscan(interface, 2) < 0)
1034                 connman_error("Failed to set interface ap_scan property");
1035
1036         g_supplicant_interface_connect(interface, info->ssid,
1037                                                 ap_start_callback, info);
1038 }
1039
1040 static void sta_remove_callback(int result,
1041                                 GSupplicantInterface *interface,
1042                                         void *user_data)
1043 {
1044         struct wifi_tethering_info *info = user_data;
1045         const char *driver = connman_option_get_string("wifi");
1046
1047         DBG("ifname %s result %d ", info->ifname, result);
1048
1049         if (result < 0) {
1050                 info->wifi->tethering = TRUE;
1051
1052                 g_free(info->ifname);
1053                 g_free(info);
1054                 return;
1055         }
1056
1057         info->wifi->interface = NULL;
1058
1059         connman_technology_tethering_notify(info->technology, TRUE);
1060
1061         g_supplicant_interface_create(info->ifname, driver, info->wifi->bridge,
1062                                                 ap_create_callback,
1063                                                         info);
1064 }
1065
1066 static int tech_set_tethering(struct connman_technology *technology,
1067                                 const char *identifier, const char *passphrase,
1068                                 const char *bridge, connman_bool_t enabled)
1069 {
1070         GList *list;
1071         GSupplicantInterface *interface;
1072         struct wifi_data *wifi;
1073         struct wifi_tethering_info *info;
1074         const char *ifname;
1075         unsigned int mode;
1076         int err;
1077
1078         DBG("");
1079
1080         if (enabled == FALSE) {
1081                 for (list = iface_list; list; list = list->next) {
1082                         wifi = list->data;
1083
1084                         if (wifi->tethering == TRUE) {
1085                                 wifi->tethering = FALSE;
1086
1087                                 connman_inet_remove_from_bridge(wifi->index,
1088                                                                         bridge);
1089                                 wifi->bridged = FALSE;
1090                         }
1091                 }
1092
1093                 connman_technology_tethering_notify(technology, FALSE);
1094
1095                 return 0;
1096         }
1097
1098         for (list = iface_list; list; list = list->next) {
1099                 wifi = list->data;
1100
1101                 interface = wifi->interface;
1102
1103                 if (interface == NULL)
1104                         continue;
1105
1106                 ifname = g_supplicant_interface_get_ifname(wifi->interface);
1107
1108                 mode = g_supplicant_interface_get_mode(interface);
1109                 if ((mode & G_SUPPLICANT_CAPABILITY_MODE_AP) == 0) {
1110                         DBG("%s does not support AP mode", ifname);
1111                         continue;
1112                 }
1113
1114                 info = g_try_malloc0(sizeof(struct wifi_tethering_info));
1115                 if (info == NULL)
1116                         return -ENOMEM;
1117
1118                 info->wifi = wifi;
1119                 info->technology = technology;
1120                 info->wifi->bridge = bridge;
1121                 info->ssid = ssid_ap_init(identifier, passphrase);
1122                 if (info->ssid == NULL) {
1123                         g_free(info);
1124                         continue;
1125                 }
1126                 info->ifname = g_strdup(ifname);
1127                 if (info->ifname == NULL) {
1128                         g_free(info);
1129                         continue;
1130                 }
1131
1132                 info->wifi->tethering = TRUE;
1133
1134                 err = g_supplicant_interface_remove(interface,
1135                                                 sta_remove_callback,
1136                                                         info);
1137                 if (err == 0)
1138                         return err;
1139         }
1140
1141         return -EOPNOTSUPP;
1142 }
1143
1144 static void regdom_callback(void *user_data)
1145 {
1146         char *alpha2 = user_data;
1147
1148         DBG("");
1149
1150         if (wifi_technology == NULL)
1151                 return;
1152
1153         connman_technology_regdom_notify(wifi_technology, alpha2);
1154 }
1155
1156 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
1157 {
1158         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
1159 }
1160
1161 static struct connman_technology_driver tech_driver = {
1162         .name           = "wifi",
1163         .type           = CONNMAN_SERVICE_TYPE_WIFI,
1164         .probe          = tech_probe,
1165         .remove         = tech_remove,
1166         .set_tethering  = tech_set_tethering,
1167         .set_regdom     = tech_set_regdom,
1168 };
1169
1170 static int wifi_init(void)
1171 {
1172         int err;
1173
1174         err = connman_network_driver_register(&network_driver);
1175         if (err < 0)
1176                 return err;
1177
1178         err = g_supplicant_register(&callbacks);
1179         if (err < 0) {
1180                 connman_network_driver_unregister(&network_driver);
1181                 return err;
1182         }
1183
1184         err = connman_technology_driver_register(&tech_driver);
1185         if (err < 0) {
1186                 g_supplicant_unregister(&callbacks);
1187                 connman_network_driver_unregister(&network_driver);
1188                 return err;
1189         }
1190
1191         return 0;
1192 }
1193
1194 static void wifi_exit(void)
1195 {
1196         DBG();
1197
1198         connman_technology_driver_unregister(&tech_driver);
1199
1200         g_supplicant_unregister(&callbacks);
1201
1202         connman_network_driver_unregister(&network_driver);
1203 }
1204
1205 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
1206                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)