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         GSupplicantInterface *interface;
  65         GSupplicantState state;
  66         connman_bool_t connected;
  67         connman_bool_t disconnecting;
  68         int index;
  69         unsigned flags;
  70         unsigned int watch;
  71 };
  72
  73 static int get_bssid(struct connman_device *device,
  74                                 unsigned char *bssid, unsigned int *bssid_len)
  75 {
  76         struct iwreq wrq;
  77         char *ifname;
  78         int ifindex;
  79         int fd, err;
  80
  81         ifindex = connman_device_get_index(device);
  82         if (ifindex < 0)
  83                 return -EINVAL;
  84
  85         ifname = connman_inet_ifname(ifindex);
  86         if (ifname == NULL)
  87                 return -EINVAL;
  88
  89         fd = socket(PF_INET, SOCK_DGRAM, 0);
  90         if (fd < 0) {
  91                 g_free(ifname);
  92                 return -EINVAL;
  93         }
  94
  95         memset(&wrq, 0, sizeof(wrq));
  96         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
  97
  98         err = ioctl(fd, SIOCGIWAP, &wrq);
  99
 100         g_free(ifname);
 101         close(fd);
 102
 103         if (err < 0)
 104                 return -EIO;
 105
 106         memcpy(bssid, wrq.u.ap_addr.sa_data, ETH_ALEN);
 107         *bssid_len = ETH_ALEN;
 108
 109         return 0;
 110 }
 111
 112 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
 113 {
 114         struct connman_device *device = user_data;
 115         struct wifi_data *wifi = connman_device_get_data(device);
 116
 117         DBG("index %d flags %d change %d", wifi->index, flags, change);
 118
 119         if (!change)
 120                 return;
 121
 122         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 123                 if (flags & IFF_UP)
 124                         DBG("interface up");
 125                 else
 126                         DBG("interface down");
 127         }
 128
 129         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 130                 if (flags & IFF_LOWER_UP)
 131                         DBG("carrier on");
 132                 else
 133                         DBG("carrier off");
 134         }
 135
 136         wifi->flags = flags;
 137 }
 138
 139 static int wifi_probe(struct connman_device *device)
 140 {
 141         struct wifi_data *wifi;
 142
 143         DBG("device %p", device);
 144
 145         wifi = g_try_new0(struct wifi_data, 1);
 146         if (wifi == NULL)
 147                 return -ENOMEM;
 148
 149         wifi->connected = FALSE;
 150         wifi->disconnecting = FALSE;
 151         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 152
 153         connman_device_set_data(device, wifi);
 154         wifi->device = connman_device_ref(device);
 155
 156         wifi->index = connman_device_get_index(device);
 157         wifi->flags = 0;
 158
 159         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 160                                                         wifi_newlink, device);
 161
 162         return 0;
 163 }
 164
 165 static void wifi_remove(struct connman_device *device)
 166 {
 167         struct wifi_data *wifi = connman_device_get_data(device);
 168
 169         DBG("device %p", device);
 170
 171         if (wifi->pending_network != NULL) {
 172                 connman_network_unref(wifi->pending_network);
 173                 wifi->pending_network = NULL;
 174         }
 175
 176         connman_device_set_data(device, NULL);
 177         connman_device_unref(wifi->device);
 178         connman_rtnl_remove_watch(wifi->watch);
 179
 180         g_supplicant_interface_set_data(wifi->interface, NULL);
 181
 182         g_free(wifi->identifier);
 183         g_free(wifi);
 184 }
 185
 186 static void interface_create_callback(int result,
 187                                         GSupplicantInterface *interface,
 188                                                         void *user_data)
 189 {
 190         struct wifi_data *wifi = user_data;
 191
 192         DBG("result %d ifname %s", result,
 193                                 g_supplicant_interface_get_ifname(interface));
 194
 195         if (result < 0)
 196                 return;
 197
 198         wifi->interface = interface;
 199         g_supplicant_interface_set_data(interface, wifi);
 200 }
 201
 202 static void interface_remove_callback(int result,
 203                                         GSupplicantInterface *interface,
 204                                                         void *user_data)
 205 {
 206         struct wifi_data *wifi = user_data;
 207
 208         DBG("result %d", result);
 209
 210         if (result < 0)
 211                 return;
 212
 213         wifi->interface = NULL;
 214 }
 215
 216
 217 static int wifi_enable(struct connman_device *device)
 218 {
 219         struct wifi_data *wifi = connman_device_get_data(device);
 220         const char *interface = connman_device_get_string(device, "Interface");
 221         const char *driver = connman_option_get_string("wifi");
 222
 223         DBG("device %p %p", device, wifi);
 224
 225         return g_supplicant_interface_create(interface, driver,
 226                                                 interface_create_callback,
 227                                                         wifi);
 228 }
 229
 230 static int wifi_disable(struct connman_device *device)
 231 {
 232         struct wifi_data *wifi = connman_device_get_data(device);
 233
 234         DBG("device %p", device);
 235
 236         wifi->connected = FALSE;
 237         wifi->disconnecting = FALSE;
 238
 239         if (wifi->pending_network != NULL) {
 240                 connman_network_unref(wifi->pending_network);
 241                 wifi->pending_network = NULL;
 242         }
 243
 244         return g_supplicant_interface_remove(wifi->interface,
 245                                                 interface_remove_callback,
 246                                                         wifi);
 247 }
 248
 249 static void scan_callback(int result, GSupplicantInterface *interface,
 250                                                 void *user_data)
 251 {
 252         struct connman_device *device = user_data;
 253
 254         DBG("result %d", result);
 255
 256         connman_device_set_scanning(device, FALSE);
 257 }
 258
 259 static int wifi_scan(struct connman_device *device)
 260 {
 261         struct wifi_data *wifi = connman_device_get_data(device);
 262
 263         DBG("device %p %p", device, wifi->interface);
 264
 265         return g_supplicant_interface_scan(wifi->interface, scan_callback,
 266                                                                 device);
 267 }
 268
 269 static struct connman_device_driver wifi_ng_driver = {
 270         .name           = "wifi",
 271         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 272         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 273         .probe          = wifi_probe,
 274         .remove         = wifi_remove,
 275         .enable         = wifi_enable,
 276         .disable        = wifi_disable,
 277         .scan           = wifi_scan,
 278 };
 279
 280 static void system_ready(void)
 281 {
 282         DBG("");
 283
 284         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 285                 connman_error("Failed to register WiFi driver");
 286 }
 287
 288 static void system_killed(void)
 289 {
 290         DBG("");
 291
 292         connman_device_driver_unregister(&wifi_ng_driver);
 293 }
 294
 295 static void interface_added(GSupplicantInterface *interface)
 296 {
 297         const char *ifname = g_supplicant_interface_get_ifname(interface);
 298         const char *driver = g_supplicant_interface_get_driver(interface);
 299         struct wifi_data *wifi;
 300
 301         wifi = g_supplicant_interface_get_data(interface);
 302
 303         /*
 304          * We can get here with a NULL wifi pointer when
 305          * the interface added signal is sent before the
 306          * interface creation callback is called.
 307          */
 308         if (wifi == NULL)
 309                 return;
 310
 311         DBG("ifname %s driver %s wifi %p", ifname, driver, wifi);
 312
 313         if (wifi->device == NULL) {
 314                 connman_error("WiFi device not set");
 315                 return;
 316         }
 317
 318         connman_device_set_powered(wifi->device, TRUE);
 319         wifi_scan(wifi->device);
 320 }
 321
 322 static connman_bool_t is_idle(struct wifi_data *wifi)
 323 {
 324         DBG("state %d", wifi->state);
 325
 326         switch (wifi->state) {
 327         case G_SUPPLICANT_STATE_UNKNOWN:
 328         case G_SUPPLICANT_STATE_DISCONNECTED:
 329         case G_SUPPLICANT_STATE_INACTIVE:
 330         case G_SUPPLICANT_STATE_SCANNING:
 331                 return TRUE;
 332
 333         case G_SUPPLICANT_STATE_AUTHENTICATING:
 334         case G_SUPPLICANT_STATE_ASSOCIATING:
 335         case G_SUPPLICANT_STATE_ASSOCIATED:
 336         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 337         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 338         case G_SUPPLICANT_STATE_COMPLETED:
 339                 return FALSE;
 340         }
 341
 342         return FALSE;
 343 }
 344
 345 static void interface_state(GSupplicantInterface *interface)
 346 {
 347         struct connman_network *network;
 348         struct connman_device *device;
 349         struct wifi_data *wifi;
 350         GSupplicantState state = g_supplicant_interface_get_state(interface);
 351         unsigned char bssid[ETH_ALEN];
 352         unsigned int bssid_len;
 353
 354         wifi = g_supplicant_interface_get_data(interface);
 355
 356         DBG("wifi %p interface state %d", wifi, state);
 357
 358         if (wifi == NULL)
 359                 return;
 360
 361         network = wifi->network;
 362         device = wifi->device;
 363
 364         if (device == NULL || network == NULL)
 365                 return;
 366
 367         switch (state) {
 368         case G_SUPPLICANT_STATE_SCANNING:
 369                 connman_device_set_scanning(device, TRUE);
 370                 break;
 371
 372         case G_SUPPLICANT_STATE_AUTHENTICATING:
 373         case G_SUPPLICANT_STATE_ASSOCIATING:
 374                 connman_network_set_associating(network, TRUE);
 375                 break;
 376
 377         case G_SUPPLICANT_STATE_COMPLETED:
 378                 /* reset scan trigger and schedule background scan */
 379                 connman_device_schedule_scan(device);
 380
 381                 if (get_bssid(device, bssid, &bssid_len) == 0)
 382                         connman_network_set_address(network,
 383                                                         bssid, bssid_len);
 384                 connman_network_set_connected(network, TRUE);
 385                 break;
 386
 387         case G_SUPPLICANT_STATE_DISCONNECTED:
 388                 /*
 389                  * If we're in one of the idle modes, we have
 390                  * not started association yet and thus setting
 391                  * those ones to FALSE could cancel an association
 392                  * in progress.
 393                  */
 394                 if (is_idle(wifi))
 395                         break;
 396                 connman_network_set_associating(network, FALSE);
 397                 connman_network_set_connected(network, FALSE);
 398                 break;
 399
 400         case G_SUPPLICANT_STATE_INACTIVE:
 401                 connman_network_set_associating(network, FALSE);
 402                 break;
 403
 404         case G_SUPPLICANT_STATE_UNKNOWN:
 405         case G_SUPPLICANT_STATE_ASSOCIATED:
 406         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 407         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 408                 break;
 409         }
 410
 411         wifi->state = state;
 412
 413         DBG("DONE");
 414 }
 415
 416 static void interface_removed(GSupplicantInterface *interface)
 417 {
 418         const char *ifname = g_supplicant_interface_get_ifname(interface);
 419         struct wifi_data *wifi;
 420
 421         DBG("ifname %s", ifname);
 422
 423         wifi = g_supplicant_interface_get_data(interface);
 424
 425         if (wifi == NULL || wifi->device == NULL) {
 426                 connman_error("Wrong wifi pointer");
 427                 return;
 428         }
 429
 430         connman_device_set_powered(wifi->device, FALSE);
 431 }
 432
 433 static void scan_started(GSupplicantInterface *interface)
 434 {
 435         struct wifi_data *wifi;
 436
 437         DBG("");
 438
 439         wifi = g_supplicant_interface_get_data(interface);
 440
 441         if (wifi == NULL)
 442                 return;
 443
 444         if (wifi->device)
 445                 connman_device_set_scanning(wifi->device, TRUE);
 446 }
 447
 448 static void scan_finished(GSupplicantInterface *interface)
 449 {
 450         struct wifi_data *wifi;
 451
 452         DBG("");
 453
 454         wifi = g_supplicant_interface_get_data(interface);
 455
 456         if (wifi == NULL)
 457                 return;
 458 }
 459
 460 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
 461 {
 462         unsigned char strength;
 463
 464         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
 465         if (strength > 100)
 466                 strength = 100;
 467
 468         return strength;
 469 }
 470
 471 static void network_added(GSupplicantNetwork *supplicant_network)
 472 {
 473         struct connman_network *network;
 474         GSupplicantInterface *interface;
 475         struct wifi_data *wifi;
 476         const char *name, *identifier, *mode, *security, *group;
 477         const unsigned char *ssid;
 478         unsigned int ssid_len;
 479
 480         DBG("");
 481
 482         interface = g_supplicant_network_get_interface(supplicant_network);
 483         wifi = g_supplicant_interface_get_data(interface);
 484         name = g_supplicant_network_get_name(supplicant_network);
 485         identifier = g_supplicant_network_get_identifier(supplicant_network);
 486         mode = g_supplicant_network_get_mode(supplicant_network);
 487         security = g_supplicant_network_get_security(supplicant_network);
 488         group = g_supplicant_network_get_identifier(supplicant_network);
 489
 490         if (wifi == NULL)
 491                 return;
 492
 493         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
 494
 495         network = connman_device_get_network(wifi->device, identifier);
 496
 497         if (network == NULL) {
 498                 network = connman_network_create(identifier,
 499                                                 CONNMAN_NETWORK_TYPE_WIFI);
 500                 if (network == NULL)
 501                         return;
 502
 503                 connman_network_set_index(network, wifi->index);
 504
 505                 if (connman_device_add_network(wifi->device, network) < 0) {
 506                         connman_network_unref(network);
 507                         return;
 508                 }
 509         }
 510
 511         if (name != NULL && name[0] != '\0')
 512                 connman_network_set_name(network, name);
 513
 514         connman_network_set_blob(network, "WiFi.SSID",
 515                                                 ssid, ssid_len);
 516         connman_network_set_string(network, "WiFi.Mode", mode);
 517         connman_network_set_string(network, "WiFi.Security", security);
 518         connman_network_set_strength(network,
 519                                 calculate_strength(supplicant_network));
 520
 521         connman_network_set_available(network, TRUE);
 522
 523         if (ssid != NULL)
 524                 connman_network_set_group(network, group);
 525 }
 526
 527 static void network_removed(GSupplicantNetwork *network)
 528 {
 529         const char *name = g_supplicant_network_get_name(network);
 530
 531         DBG("* name %s", name);
 532 }
 533
 534 static void debug(const char *str)
 535 {
 536         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
 537                 connman_debug("%s", str);
 538 }
 539
 540 static const GSupplicantCallbacks callbacks = {
 541         .system_ready           = system_ready,
 542         .system_killed          = system_killed,
 543         .interface_added        = interface_added,
 544         .interface_state        = interface_state,
 545         .interface_removed      = interface_removed,
 546         .scan_started           = scan_started,
 547         .scan_finished          = scan_finished,
 548         .network_added          = network_added,
 549         .network_removed        = network_removed,
 550         .debug                  = debug,
 551 };
 552
 553
 554 static int network_probe(struct connman_network *network)
 555 {
 556         DBG("network %p", network);
 557
 558         return 0;
 559 }
 560
 561 static void network_remove(struct connman_network *network)
 562 {
 563         DBG("network %p", network);
 564 }
 565
 566 static void connect_callback(int result, GSupplicantInterface *interface,
 567                                                         void *user_data)
 568 {
 569         connman_error("%s", __func__);
 570 }
 571
 572 static GSupplicantSecurity network_security(const char *security)
 573 {
 574         if (g_str_equal(security, "none") == TRUE)
 575                 return G_SUPPLICANT_SECURITY_NONE;
 576         else if (g_str_equal(security, "wep") == TRUE)
 577                 return G_SUPPLICANT_SECURITY_WEP;
 578         else if (g_str_equal(security, "psk") == TRUE)
 579                 return G_SUPPLICANT_SECURITY_PSK;
 580         else if (g_str_equal(security, "wpa") == TRUE)
 581                 return G_SUPPLICANT_SECURITY_PSK;
 582         else if (g_str_equal(security, "rsn") == TRUE)
 583                 return G_SUPPLICANT_SECURITY_PSK;
 584         else if (g_str_equal(security, "ieee8021x") == TRUE)
 585                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 586
 587         return G_SUPPLICANT_SECURITY_UNKNOWN;
 588 }
 589
 590 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 591 {
 592         const char *security, *passphrase;
 593
 594         memset(ssid, 0, sizeof(*ssid));
 595         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 596                                                 &ssid->ssid_len);
 597         security = connman_network_get_string(network, "WiFi.Security");
 598         ssid->security = network_security(security);
 599         passphrase = connman_network_get_string(network,
 600                                                 "WiFi.Passphrase");
 601         if (strlen(passphrase) == 0)
 602                 ssid->passphrase = NULL;
 603         else
 604                 ssid->passphrase = passphrase;
 605
 606         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 607
 608         /*
 609          * If our private key password is unset,
 610          * we use the supplied passphrase. That is needed
 611          * for PEAP where 2 passphrases (identity and client
 612          * cert may have to be provided.
 613          */
 614         if (connman_network_get_string(network,
 615                                         "WiFi.PrivateKeyPassphrase") == NULL)
 616                 connman_network_set_string(network,
 617                                                 "WiFi.PrivateKeyPassphrase",
 618                                                 ssid->passphrase);
 619         /* We must have an identity for both PEAP and TLS */
 620         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 621         ssid->ca_cert_path = connman_network_get_string(network,
 622                                                         "WiFi.CACertFile");
 623         ssid->client_cert_path = connman_network_get_string(network,
 624                                                         "WiFi.ClientCertFile");
 625         ssid->private_key_path = connman_network_get_string(network,
 626                                                         "WiFi.PrivateKeyFile");
 627         ssid->private_key_passphrase = connman_network_get_string(network,
 628                                                 "WiFi.PrivateKeyPassphrase");
 629         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 630
 631 }
 632
 633 static int network_connect(struct connman_network *network)
 634 {
 635         struct connman_device *device = connman_network_get_device(network);
 636         struct wifi_data *wifi;
 637         GSupplicantInterface *interface;
 638         GSupplicantSSID ssid;
 639
 640         DBG("network %p", network);
 641
 642         if (device == NULL)
 643                 return -ENODEV;
 644
 645         wifi = connman_device_get_data(device);
 646         if (wifi == NULL)
 647                 return -ENODEV;
 648
 649         interface = wifi->interface;
 650
 651         ssid_init(&ssid, network);
 652
 653         if (wifi->disconnecting == TRUE)
 654                 wifi->pending_network = connman_network_ref(network);
 655         else {
 656                 wifi->network = connman_network_ref(network);
 657
 658                 return g_supplicant_interface_connect(interface, &ssid,
 659                                                 connect_callback, NULL);
 660         }
 661
 662         return -EINPROGRESS;
 663 }
 664
 665 static void disconnect_callback(int result, GSupplicantInterface *interface,
 666                                                                 void *user_data)
 667 {
 668         struct wifi_data *wifi = user_data;
 669
 670         if (wifi->network != NULL) {
 671                 /*
 672                  * if result < 0 supplican return an error because
 673                  * the network is not current.
 674                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 675                  * failed, call connman_network_set_connected to report
 676                  * disconnect is completed.
 677                  */
 678                 if (result < 0)
 679                         connman_network_set_connected(wifi->network, FALSE);
 680
 681                 connman_network_unref(wifi->network);
 682         }
 683
 684         wifi->network = NULL;
 685
 686         wifi->disconnecting = FALSE;
 687
 688         if (wifi->pending_network != NULL) {
 689                 network_connect(wifi->pending_network);
 690                 connman_network_unref(wifi->pending_network);
 691                 wifi->pending_network = NULL;
 692         }
 693
 694 }
 695
 696 static int network_disconnect(struct connman_network *network)
 697 {
 698         struct connman_device *device = connman_network_get_device(network);
 699         struct wifi_data *wifi;
 700         int err;
 701
 702         DBG("network %p", network);
 703
 704         wifi = connman_device_get_data(device);
 705         if (wifi == NULL || wifi->interface == NULL)
 706                 return -ENODEV;
 707
 708         connman_network_set_associating(network, FALSE);
 709
 710         if (wifi->disconnecting == TRUE)
 711                 return -EALREADY;
 712
 713         wifi->disconnecting = TRUE;
 714
 715         err = g_supplicant_interface_disconnect(wifi->interface,
 716                                                 disconnect_callback, wifi);
 717         if (err < 0)
 718                 wifi->disconnecting = FALSE;
 719
 720         return err;
 721 }
 722
 723 static struct connman_network_driver network_driver = {
 724         .name           = "wifi",
 725         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 726         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 727         .probe          = network_probe,
 728         .remove         = network_remove,
 729         .connect        = network_connect,
 730         .disconnect     = network_disconnect,
 731 };
 732
 733 static int tech_probe(struct connman_technology *technology)
 734 {
 735         wifi_technology = technology;
 736
 737         return 0;
 738 }
 739
 740 static void tech_remove(struct connman_technology *technology)
 741 {
 742         wifi_technology = NULL;
 743 }
 744
 745 static void regdom_callback(void *user_data)
 746 {
 747         char *alpha2 = user_data;
 748
 749         DBG("");
 750
 751         if (wifi_technology == NULL)
 752                 return;
 753
 754         connman_technology_regdom_notify(wifi_technology, alpha2);
 755 }
 756
 757 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
 758 {
 759         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
 760 }
 761
 762 static struct connman_technology_driver tech_driver = {
 763         .name           = "wifi",
 764         .type           = CONNMAN_SERVICE_TYPE_WIFI,
 765         .probe          = tech_probe,
 766         .remove         = tech_remove,
 767         .set_regdom     = tech_set_regdom,
 768 };
 769
 770 static int wifi_init(void)
 771 {
 772         int err;
 773
 774         err = connman_network_driver_register(&network_driver);
 775         if (err < 0)
 776                 return err;
 777
 778         err = g_supplicant_register(&callbacks);
 779         if (err < 0) {
 780                 connman_network_driver_unregister(&network_driver);
 781                 return err;
 782         }
 783
 784         err = connman_technology_driver_register(&tech_driver);
 785         if (err < 0) {
 786                 g_supplicant_unregister(&callbacks);
 787                 connman_network_driver_unregister(&network_driver);
 788                 return err;
 789         }
 790
 791         return 0;
 792 }
 793
 794 static void wifi_exit(void)
 795 {
 796         DBG();
 797
 798         connman_technology_driver_unregister(&tech_driver);
 799
 800         g_supplicant_unregister(&callbacks);
 801
 802         connman_network_driver_unregister(&network_driver);
 803 }
 804
 805 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 806                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)