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 <stdio.h>
  30 #include <string.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/socket.h>
  33 #include <linux/if_arp.h>
  34 #include <linux/wireless.h>
  35 #include <net/ethernet.h>
  36
  37 #ifndef IFF_LOWER_UP
  38 #define IFF_LOWER_UP    0x10000
  39 #endif
  40
  41 #include <dbus/dbus.h>
  42 #include <glib.h>
  43
  44 #define CONNMAN_API_SUBJECT_TO_CHANGE
  45 #include <connman/plugin.h>
  46 #include <connman/inet.h>
  47 #include <connman/device.h>
  48 #include <connman/rtnl.h>
  49 #include <connman/technology.h>
  50 #include <connman/log.h>
  51 #include <connman/option.h>
  52 #include <connman/storage.h>
  53
  54 #include <gsupplicant/gsupplicant.h>
  55
  56 #define CLEANUP_TIMEOUT   8     /* in seconds */
  57 #define INACTIVE_TIMEOUT  12    /* in seconds */
  58 #define MAXIMUM_RETRIES   4
  59
  60 #define BGSCAN_DEFAULT "simple:30:-45:300"
  61
  62 struct connman_technology *wifi_technology = NULL;
  63
  64 struct hidden_params {
  65         char ssid[32];
  66         unsigned int ssid_len;
  67         char *identity;
  68         char *passphrase;
  69 };
  70
  71 struct wifi_data {
  72         char *identifier;
  73         struct connman_device *device;
  74         struct connman_network *network;
  75         struct connman_network *pending_network;
  76         GSList *networks;
  77         GSupplicantInterface *interface;
  78         GSupplicantState state;
  79         connman_bool_t connected;
  80         connman_bool_t disconnecting;
  81         connman_bool_t tethering;
  82         connman_bool_t bridged;
  83         const char *bridge;
  84         int index;
  85         unsigned flags;
  86         unsigned int watch;
  87         int retries;
  88         struct hidden_params *hidden;
  89 };
  90
  91 static GList *iface_list = NULL;
  92
  93 static void handle_tethering(struct wifi_data *wifi)
  94 {
  95         if (wifi->tethering == FALSE)
  96                 return;
  97
  98         if (wifi->bridge == NULL)
  99                 return;
 100
 101         if (wifi->bridged == TRUE)
 102                 return;
 103
 104         DBG("index %d bridge %s", wifi->index, wifi->bridge);
 105
 106         if (connman_inet_add_to_bridge(wifi->index, wifi->bridge) < 0)
 107                 return;
 108
 109         wifi->bridged = TRUE;
 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
 133                         handle_tethering(wifi);
 134                 } else
 135                         DBG("carrier off");
 136         }
 137
 138         wifi->flags = flags;
 139 }
 140
 141 static int wifi_probe(struct connman_device *device)
 142 {
 143         struct wifi_data *wifi;
 144
 145         DBG("device %p", device);
 146
 147         wifi = g_try_new0(struct wifi_data, 1);
 148         if (wifi == NULL)
 149                 return -ENOMEM;
 150
 151         wifi->connected = FALSE;
 152         wifi->disconnecting = FALSE;
 153         wifi->tethering = FALSE;
 154         wifi->bridged = FALSE;
 155         wifi->bridge = NULL;
 156         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 157
 158         connman_device_set_data(device, wifi);
 159         wifi->device = connman_device_ref(device);
 160
 161         wifi->index = connman_device_get_index(device);
 162         wifi->flags = 0;
 163
 164         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 165                                                         wifi_newlink, device);
 166
 167         iface_list = g_list_append(iface_list, wifi);
 168
 169         return 0;
 170 }
 171
 172 static void remove_networks(struct connman_device *device,
 173                                 struct wifi_data *wifi)
 174 {
 175         GSList *list;
 176
 177         for (list = wifi->networks; list != NULL; list = list->next) {
 178                 struct connman_network *network = list->data;
 179
 180                 connman_device_remove_network(device, network);
 181                 connman_network_unref(network);
 182         }
 183
 184         g_slist_free(wifi->networks);
 185         wifi->networks = NULL;
 186 }
 187
 188 static void wifi_remove(struct connman_device *device)
 189 {
 190         struct wifi_data *wifi = connman_device_get_data(device);
 191
 192         DBG("device %p wifi %p", device, wifi);
 193
 194         if (wifi == NULL)
 195                 return;
 196
 197         iface_list = g_list_remove(iface_list, wifi);
 198
 199         remove_networks(device, wifi);
 200
 201         connman_device_set_powered(device, FALSE);
 202         connman_device_set_data(device, NULL);
 203         connman_device_unref(wifi->device);
 204         connman_rtnl_remove_watch(wifi->watch);
 205
 206         g_supplicant_interface_set_data(wifi->interface, NULL);
 207
 208         g_free(wifi->identifier);
 209         g_free(wifi);
 210 }
 211
 212 static void interface_create_callback(int result,
 213                                         GSupplicantInterface *interface,
 214                                                         void *user_data)
 215 {
 216         struct wifi_data *wifi = user_data;
 217
 218         DBG("result %d ifname %s, wifi %p", result,
 219                                 g_supplicant_interface_get_ifname(interface),
 220                                 wifi);
 221
 222         if (result < 0 || wifi == NULL)
 223                 return;
 224
 225         wifi->interface = interface;
 226         g_supplicant_interface_set_data(interface, wifi);
 227
 228         if (g_supplicant_interface_get_ready(interface) == FALSE)
 229                 return;
 230
 231         DBG("interface is ready wifi %p tethering %d", wifi, wifi->tethering);
 232
 233         if (wifi->device == NULL) {
 234                 connman_error("WiFi device not set");
 235                 return;
 236         }
 237
 238         connman_device_set_powered(wifi->device, TRUE);
 239 }
 240
 241 static int wifi_enable(struct connman_device *device)
 242 {
 243         struct wifi_data *wifi = connman_device_get_data(device);
 244         const char *interface = connman_device_get_string(device, "Interface");
 245         const char *driver = connman_option_get_string("wifi");
 246         int ret;
 247
 248         DBG("device %p %p", device, wifi);
 249
 250         ret = g_supplicant_interface_create(interface, driver, NULL,
 251                                                 interface_create_callback,
 252                                                         wifi);
 253         if (ret < 0)
 254                 return ret;
 255
 256         return -EINPROGRESS;
 257 }
 258
 259 static int wifi_disable(struct connman_device *device)
 260 {
 261         struct wifi_data *wifi = connman_device_get_data(device);
 262         int ret;
 263
 264         DBG("device %p", device);
 265
 266         wifi->connected = FALSE;
 267         wifi->disconnecting = FALSE;
 268
 269         if (wifi->pending_network != NULL)
 270                 wifi->pending_network = NULL;
 271
 272         remove_networks(device, wifi);
 273
 274         ret = g_supplicant_interface_remove(wifi->interface, NULL, NULL);
 275         if (ret < 0)
 276                 return ret;
 277
 278         return -EINPROGRESS;
 279 }
 280
 281 static void hidden_free(struct hidden_params *hidden)
 282 {
 283         if (hidden == NULL)
 284                 return;
 285
 286         g_free(hidden->identity);
 287         g_free(hidden->passphrase);
 288         g_free(hidden);
 289 }
 290
 291 static void scan_callback(int result, GSupplicantInterface *interface,
 292                                                 void *user_data)
 293 {
 294         struct connman_device *device = user_data;
 295         struct wifi_data *wifi = connman_device_get_data(device);
 296
 297         DBG("result %d", result);
 298
 299         if (wifi != NULL && wifi->hidden != NULL) {
 300                 hidden_free(wifi->hidden);
 301                 wifi->hidden = NULL;
 302         }
 303
 304         if (result < 0)
 305                 connman_device_reset_scanning(device);
 306
 307         connman_device_set_scanning(device, FALSE);
 308         connman_device_unref(device);
 309 }
 310
 311 static int add_scan_param(gchar *hex_ssid, int freq,
 312                         GSupplicantScanParams *scan_data,
 313                         int driver_max_scan_ssids)
 314 {
 315         unsigned int i;
 316
 317         if (driver_max_scan_ssids > scan_data->num_ssids && hex_ssid != NULL) {
 318                 gchar *ssid;
 319                 unsigned int j = 0, hex;
 320                 size_t hex_ssid_len = strlen(hex_ssid);
 321
 322                 ssid = g_try_malloc0(hex_ssid_len / 2);
 323                 if (ssid == NULL)
 324                         return -ENOMEM;
 325
 326                 for (i = 0; i < hex_ssid_len; i += 2) {
 327                         sscanf(hex_ssid + i, "%02x", &hex);
 328                         ssid[j++] = hex;
 329                 }
 330
 331                 memcpy(scan_data->ssids[scan_data->num_ssids].ssid, ssid, j);
 332                 scan_data->ssids[scan_data->num_ssids].ssid_len = j;
 333                 scan_data->num_ssids++;
 334
 335                 g_free(ssid);
 336         }
 337
 338         /* Don't add duplicate entries */
 339         for (i = 0; i < G_SUPPLICANT_MAX_FAST_SCAN; i++) {
 340                 if (scan_data->freqs[i] == 0) {
 341                         scan_data->freqs[i] = freq;
 342                         break;
 343                 } else if (scan_data->freqs[i] == freq)
 344                         break;
 345         }
 346
 347         return 0;
 348 }
 349
 350 struct last_connected {
 351         GTimeVal modified;
 352         gchar *ssid;
 353         int freq;
 354 };
 355
 356 static gint sort_entry(gconstpointer a, gconstpointer b, gpointer user_data)
 357 {
 358         GTimeVal *aval = (GTimeVal *)a;
 359         GTimeVal *bval = (GTimeVal *)b;
 360
 361         /* Note that the sort order is descending */
 362         if (aval->tv_sec < bval->tv_sec)
 363                 return 1;
 364
 365         if (aval->tv_sec > bval->tv_sec)
 366                 return -1;
 367
 368         return 0;
 369 }
 370
 371 static void free_entry(gpointer data)
 372 {
 373         struct last_connected *entry = data;
 374
 375         g_free(entry->ssid);
 376         g_free(entry);
 377 }
 378
 379 static int get_latest_connections(int max_ssids,
 380                                 GSupplicantScanParams *scan_data)
 381 {
 382         GSequenceIter *iter;
 383         GSequence *latest_list;
 384         struct last_connected *entry;
 385         GKeyFile *keyfile;
 386         GTimeVal modified;
 387         gchar **services;
 388         gchar *str;
 389         char *ssid;
 390         int i, freq;
 391         int num_ssids = 0;
 392
 393         latest_list = g_sequence_new(free_entry);
 394         if (latest_list == NULL)
 395                 return -ENOMEM;
 396
 397         services = connman_storage_get_services();
 398         for (i = 0; services && services[i]; i++) {
 399                 if (strncmp(services[i], "wifi_", 5) != 0)
 400                         continue;
 401
 402                 keyfile = connman_storage_load_service(services[i]);
 403
 404                 str = g_key_file_get_string(keyfile,
 405                                         services[i], "Favorite", NULL);
 406                 if (str == NULL || g_strcmp0(str, "true")) {
 407                         if (str)
 408                                 g_free(str);
 409                         g_key_file_free(keyfile);
 410                         continue;
 411                 }
 412                 g_free(str);
 413
 414                 str = g_key_file_get_string(keyfile,
 415                                         services[i], "AutoConnect", NULL);
 416                 if (str == NULL || g_strcmp0(str, "true")) {
 417                         if (str)
 418                                 g_free(str);
 419                         g_key_file_free(keyfile);
 420                         continue;
 421                 }
 422                 g_free(str);
 423
 424                 str = g_key_file_get_string(keyfile,
 425                                         services[i], "Modified", NULL);
 426                 if (str != NULL) {
 427                         g_time_val_from_iso8601(str, &modified);
 428                         g_free(str);
 429                 }
 430
 431                 ssid = g_key_file_get_string(keyfile,
 432                                         services[i], "SSID", NULL);
 433
 434                 freq = g_key_file_get_integer(keyfile, services[i],
 435                                         "Frequency", NULL);
 436                 if (freq) {
 437                         entry = g_try_new(struct last_connected, 1);
 438                         if (entry == NULL) {
 439                                 g_sequence_free(latest_list);
 440                                 g_key_file_free(keyfile);
 441                                 g_free(ssid);
 442                                 return -ENOMEM;
 443                         }
 444
 445                         entry->ssid = ssid;
 446                         entry->modified = modified;
 447                         entry->freq = freq;
 448
 449                         g_sequence_insert_sorted(latest_list, entry,
 450                                                 sort_entry, NULL);
 451                         num_ssids++;
 452                 } else
 453                         g_free(ssid);
 454
 455                 g_key_file_free(keyfile);
 456         }
 457
 458         g_strfreev(services);
 459
 460         num_ssids = num_ssids > G_SUPPLICANT_MAX_FAST_SCAN ?
 461                 G_SUPPLICANT_MAX_FAST_SCAN : num_ssids;
 462
 463         iter = g_sequence_get_begin_iter(latest_list);
 464
 465         for (i = 0; i < num_ssids; i++) {
 466                 entry = g_sequence_get(iter);
 467
 468                 DBG("ssid %s freq %d modified %lu", entry->ssid, entry->freq,
 469                                                 entry->modified.tv_sec);
 470
 471                 add_scan_param(entry->ssid, entry->freq, scan_data, max_ssids);
 472
 473                 iter = g_sequence_iter_next(iter);
 474         }
 475
 476         g_sequence_free(latest_list);
 477         return num_ssids;
 478 }
 479
 480 static int wifi_scan(struct connman_device *device)
 481 {
 482         struct wifi_data *wifi = connman_device_get_data(device);
 483         int ret;
 484
 485         DBG("device %p %p", device, wifi->interface);
 486
 487         if (wifi->tethering == TRUE)
 488                 return 0;
 489
 490         connman_device_ref(device);
 491         ret = g_supplicant_interface_scan(wifi->interface, NULL,
 492                                         scan_callback, device);
 493         if (ret == 0)
 494                 connman_device_set_scanning(device, TRUE);
 495         else
 496                 connman_device_unref(device);
 497
 498         return ret;
 499 }
 500
 501 static int wifi_scan_fast(struct connman_device *device)
 502 {
 503         struct wifi_data *wifi = connman_device_get_data(device);
 504         GSupplicantScanParams *scan_params = NULL;
 505         int ret;
 506         int driver_max_ssids = 0;
 507
 508         DBG("device %p %p", device, wifi->interface);
 509
 510         if (wifi->tethering == TRUE)
 511                 return 0;
 512
 513         driver_max_ssids = g_supplicant_interface_get_max_scan_ssids(
 514                                                         wifi->interface);
 515         DBG("max ssids %d", driver_max_ssids);
 516         if (driver_max_ssids == 0)
 517                 return wifi_scan(device);
 518
 519         scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
 520         if (scan_params == NULL)
 521                 return -ENOMEM;
 522
 523         ret = get_latest_connections(driver_max_ssids, scan_params);
 524         if (ret <= 0) {
 525                 g_free(scan_params);
 526                 return wifi_scan(device);
 527         }
 528
 529         connman_device_ref(device);
 530         ret = g_supplicant_interface_scan(wifi->interface, scan_params,
 531                                                 scan_callback, device);
 532         if (ret == 0)
 533                 connman_device_set_scanning(device, TRUE);
 534         else {
 535                 g_free(scan_params);
 536                 connman_device_unref(device);
 537         }
 538
 539         return ret;
 540 }
 541
 542 static int wifi_scan_hidden(struct connman_device *device,
 543                 const char *ssid, unsigned int ssid_len,
 544                 const char *identity, const char* passphrase)
 545 {
 546         struct wifi_data *wifi = connman_device_get_data(device);
 547         GSupplicantScanParams *scan_params = NULL;
 548         struct hidden_params *hidden;
 549         int ret;
 550
 551         DBG("hidden SSID %s", ssid);
 552
 553         if (wifi->tethering == TRUE || wifi->hidden != NULL)
 554                 return -EBUSY;
 555
 556         if (ssid == NULL || ssid_len == 0 || ssid_len > 32)
 557                 return -EINVAL;
 558
 559         scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
 560         if (scan_params == NULL)
 561                 return -ENOMEM;
 562         memcpy(scan_params->ssids[0].ssid, ssid, ssid_len);
 563         scan_params->ssids[0].ssid_len = ssid_len;
 564         scan_params->num_ssids = 1;
 565
 566         hidden = g_try_new0(struct hidden_params, 1);
 567         if (hidden == NULL) {
 568                 g_free(scan_params);
 569                 return -ENOMEM;
 570         }
 571         memcpy(hidden->ssid, ssid, ssid_len);
 572         hidden->ssid_len = ssid_len;
 573         hidden->identity = g_strdup(identity);
 574         hidden->passphrase = g_strdup(passphrase);
 575         wifi->hidden = hidden;
 576
 577         connman_device_ref(device);
 578         ret = g_supplicant_interface_scan(wifi->interface, scan_params,
 579                         scan_callback, device);
 580         if (ret == 0)
 581                 connman_device_set_scanning(device, TRUE);
 582         else {
 583                 connman_device_unref(device);
 584                 g_free(scan_params);
 585                 hidden_free(wifi->hidden);
 586                 wifi->hidden = NULL;
 587         }
 588
 589         return ret;
 590 }
 591
 592 static struct connman_device_driver wifi_ng_driver = {
 593         .name           = "wifi",
 594         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 595         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 596         .probe          = wifi_probe,
 597         .remove         = wifi_remove,
 598         .enable         = wifi_enable,
 599         .disable        = wifi_disable,
 600         .scan           = wifi_scan,
 601         .scan_fast      = wifi_scan_fast,
 602         .scan_hidden    = wifi_scan_hidden,
 603 };
 604
 605 static void system_ready(void)
 606 {
 607         DBG("");
 608
 609         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 610                 connman_error("Failed to register WiFi driver");
 611 }
 612
 613 static void system_killed(void)
 614 {
 615         DBG("");
 616
 617         connman_device_driver_unregister(&wifi_ng_driver);
 618 }
 619
 620 static int network_probe(struct connman_network *network)
 621 {
 622         DBG("network %p", network);
 623
 624         return 0;
 625 }
 626
 627 static void network_remove(struct connman_network *network)
 628 {
 629         struct connman_device *device = connman_network_get_device(network);
 630         struct wifi_data *wifi;
 631
 632         DBG("network %p", network);
 633
 634         wifi = connman_device_get_data(device);
 635         if (wifi == NULL)
 636                 return;
 637
 638         if (wifi->network != network)
 639                 return;
 640
 641         wifi->network = NULL;
 642 }
 643
 644 static void connect_callback(int result, GSupplicantInterface *interface,
 645                                                         void *user_data)
 646 {
 647         struct connman_network *network = user_data;
 648
 649         DBG("network %p result %d", network, result);
 650
 651         if (result == -ENOKEY) {
 652                 connman_network_set_error(network,
 653                                         CONNMAN_NETWORK_ERROR_INVALID_KEY);
 654         } else if (result < 0) {
 655                 connman_network_set_error(network,
 656                                         CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
 657         }
 658 }
 659
 660 static GSupplicantSecurity network_security(const char *security)
 661 {
 662         if (g_str_equal(security, "none") == TRUE)
 663                 return G_SUPPLICANT_SECURITY_NONE;
 664         else if (g_str_equal(security, "wep") == TRUE)
 665                 return G_SUPPLICANT_SECURITY_WEP;
 666         else if (g_str_equal(security, "psk") == TRUE)
 667                 return G_SUPPLICANT_SECURITY_PSK;
 668         else if (g_str_equal(security, "wpa") == TRUE)
 669                 return G_SUPPLICANT_SECURITY_PSK;
 670         else if (g_str_equal(security, "rsn") == TRUE)
 671                 return G_SUPPLICANT_SECURITY_PSK;
 672         else if (g_str_equal(security, "ieee8021x") == TRUE)
 673                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 674
 675         return G_SUPPLICANT_SECURITY_UNKNOWN;
 676 }
 677
 678 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 679 {
 680         const char *security, *passphrase, *agent_passphrase;
 681
 682         memset(ssid, 0, sizeof(*ssid));
 683         ssid->mode = G_SUPPLICANT_MODE_INFRA;
 684         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 685                                                 &ssid->ssid_len);
 686         ssid->scan_ssid = 1;
 687         security = connman_network_get_string(network, "WiFi.Security");
 688         ssid->security = network_security(security);
 689         passphrase = connman_network_get_string(network,
 690                                                 "WiFi.Passphrase");
 691         if (passphrase == NULL || strlen(passphrase) == 0) {
 692
 693                 /* Use agent provided passphrase as a fallback */
 694                 agent_passphrase = connman_network_get_string(network,
 695                                                 "WiFi.AgentPassphrase");
 696
 697                 if (agent_passphrase == NULL || strlen(agent_passphrase) == 0)
 698                         ssid->passphrase = NULL;
 699                 else
 700                         ssid->passphrase = agent_passphrase;
 701         } else
 702                 ssid->passphrase = passphrase;
 703
 704         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 705
 706         /*
 707          * If our private key password is unset,
 708          * we use the supplied passphrase. That is needed
 709          * for PEAP where 2 passphrases (identity and client
 710          * cert may have to be provided.
 711          */
 712         if (connman_network_get_string(network,
 713                                         "WiFi.PrivateKeyPassphrase") == NULL)
 714                 connman_network_set_string(network,
 715                                                 "WiFi.PrivateKeyPassphrase",
 716                                                 ssid->passphrase);
 717         /* We must have an identity for both PEAP and TLS */
 718         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 719
 720         /* Use agent provided identity as a fallback */
 721         if (ssid->identity == NULL || strlen(ssid->identity) == 0)
 722                 ssid->identity = connman_network_get_string(network,
 723                                                         "WiFi.AgentIdentity");
 724
 725         ssid->ca_cert_path = connman_network_get_string(network,
 726                                                         "WiFi.CACertFile");
 727         ssid->client_cert_path = connman_network_get_string(network,
 728                                                         "WiFi.ClientCertFile");
 729         ssid->private_key_path = connman_network_get_string(network,
 730                                                         "WiFi.PrivateKeyFile");
 731         ssid->private_key_passphrase = connman_network_get_string(network,
 732                                                 "WiFi.PrivateKeyPassphrase");
 733         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 734
 735         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
 736         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
 737
 738         ssid->bgscan = BGSCAN_DEFAULT;
 739 }
 740
 741 static int network_connect(struct connman_network *network)
 742 {
 743         struct connman_device *device = connman_network_get_device(network);
 744         struct wifi_data *wifi;
 745         GSupplicantInterface *interface;
 746         GSupplicantSSID *ssid;
 747
 748         DBG("network %p", network);
 749
 750         if (device == NULL)
 751                 return -ENODEV;
 752
 753         wifi = connman_device_get_data(device);
 754         if (wifi == NULL)
 755                 return -ENODEV;
 756
 757         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
 758         if (ssid == NULL)
 759                 return -ENOMEM;
 760
 761         interface = wifi->interface;
 762
 763         ssid_init(ssid, network);
 764
 765         if (wifi->disconnecting == TRUE)
 766                 wifi->pending_network = network;
 767         else {
 768                 wifi->network = network;
 769                 wifi->retries = 0;
 770
 771                 return g_supplicant_interface_connect(interface, ssid,
 772                                                 connect_callback, network);
 773         }
 774
 775         return -EINPROGRESS;
 776 }
 777
 778 static void disconnect_callback(int result, GSupplicantInterface *interface,
 779                                                                 void *user_data)
 780 {
 781         struct wifi_data *wifi = user_data;
 782
 783         if (wifi->network != NULL) {
 784                 /*
 785                  * if result < 0 supplican return an error because
 786                  * the network is not current.
 787                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 788                  * failed, call connman_network_set_connected to report
 789                  * disconnect is completed.
 790                  */
 791                 if (result < 0)
 792                         connman_network_set_connected(wifi->network, FALSE);
 793         }
 794
 795         wifi->network = NULL;
 796
 797         wifi->disconnecting = FALSE;
 798
 799         if (wifi->pending_network != NULL) {
 800                 network_connect(wifi->pending_network);
 801                 wifi->pending_network = NULL;
 802         }
 803
 804 }
 805
 806 static int network_disconnect(struct connman_network *network)
 807 {
 808         struct connman_device *device = connman_network_get_device(network);
 809         struct wifi_data *wifi;
 810         int err;
 811
 812         DBG("network %p", network);
 813
 814         wifi = connman_device_get_data(device);
 815         if (wifi == NULL || wifi->interface == NULL)
 816                 return -ENODEV;
 817
 818         connman_network_set_associating(network, FALSE);
 819
 820         if (wifi->disconnecting == TRUE)
 821                 return -EALREADY;
 822
 823         wifi->disconnecting = TRUE;
 824
 825         err = g_supplicant_interface_disconnect(wifi->interface,
 826                                                 disconnect_callback, wifi);
 827         if (err < 0)
 828                 wifi->disconnecting = FALSE;
 829
 830         return err;
 831 }
 832
 833 static struct connman_network_driver network_driver = {
 834         .name           = "wifi",
 835         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 836         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 837         .probe          = network_probe,
 838         .remove         = network_remove,
 839         .connect        = network_connect,
 840         .disconnect     = network_disconnect,
 841 };
 842
 843 static void interface_added(GSupplicantInterface *interface)
 844 {
 845         const char *ifname = g_supplicant_interface_get_ifname(interface);
 846         const char *driver = g_supplicant_interface_get_driver(interface);
 847         struct wifi_data *wifi;
 848
 849         wifi = g_supplicant_interface_get_data(interface);
 850
 851         /*
 852          * We can get here with a NULL wifi pointer when
 853          * the interface added signal is sent before the
 854          * interface creation callback is called.
 855          */
 856         if (wifi == NULL)
 857                 return;
 858
 859         DBG("ifname %s driver %s wifi %p tethering %d",
 860                         ifname, driver, wifi, wifi->tethering);
 861
 862         if (wifi->device == NULL) {
 863                 connman_error("WiFi device not set");
 864                 return;
 865         }
 866
 867         connman_device_set_powered(wifi->device, TRUE);
 868
 869         if (wifi->tethering == TRUE)
 870                 return;
 871 }
 872
 873 static connman_bool_t is_idle(struct wifi_data *wifi)
 874 {
 875         DBG("state %d", wifi->state);
 876
 877         switch (wifi->state) {
 878         case G_SUPPLICANT_STATE_UNKNOWN:
 879         case G_SUPPLICANT_STATE_DISCONNECTED:
 880         case G_SUPPLICANT_STATE_INACTIVE:
 881         case G_SUPPLICANT_STATE_SCANNING:
 882                 return TRUE;
 883
 884         case G_SUPPLICANT_STATE_AUTHENTICATING:
 885         case G_SUPPLICANT_STATE_ASSOCIATING:
 886         case G_SUPPLICANT_STATE_ASSOCIATED:
 887         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 888         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 889         case G_SUPPLICANT_STATE_COMPLETED:
 890                 return FALSE;
 891         }
 892
 893         return FALSE;
 894 }
 895
 896 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
 897                                                 struct wifi_data *wifi)
 898 {
 899         /* First, let's check if WPS processing did not went wrong */
 900         if (g_supplicant_interface_get_wps_state(interface) ==
 901                 G_SUPPLICANT_WPS_STATE_FAIL)
 902                 return FALSE;
 903
 904         /* Unlike normal connection, being associated while processing wps
 905          * actually means that we are idling. */
 906         switch (wifi->state) {
 907         case G_SUPPLICANT_STATE_UNKNOWN:
 908         case G_SUPPLICANT_STATE_DISCONNECTED:
 909         case G_SUPPLICANT_STATE_INACTIVE:
 910         case G_SUPPLICANT_STATE_SCANNING:
 911         case G_SUPPLICANT_STATE_ASSOCIATED:
 912                 return TRUE;
 913         case G_SUPPLICANT_STATE_AUTHENTICATING:
 914         case G_SUPPLICANT_STATE_ASSOCIATING:
 915         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 916         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 917         case G_SUPPLICANT_STATE_COMPLETED:
 918                 return FALSE;
 919         }
 920
 921         return FALSE;
 922 }
 923
 924 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
 925                                         struct connman_network *network,
 926                                         struct connman_device *device,
 927                                         struct wifi_data *wifi)
 928 {
 929         connman_bool_t wps;
 930
 931         wps = connman_network_get_bool(network, "WiFi.UseWPS");
 932         if (wps == TRUE) {
 933                 const unsigned char *ssid, *wps_ssid;
 934                 unsigned int ssid_len, wps_ssid_len;
 935                 const char *wps_key;
 936
 937                 /* Checking if we got associated with requested
 938                  * network */
 939                 ssid = connman_network_get_blob(network, "WiFi.SSID",
 940                                                 &ssid_len);
 941
 942                 wps_ssid = g_supplicant_interface_get_wps_ssid(
 943                         interface, &wps_ssid_len);
 944
 945                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
 946                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
 947                         connman_network_set_associating(network, FALSE);
 948                         g_supplicant_interface_disconnect(wifi->interface,
 949                                                 disconnect_callback, wifi);
 950                         return FALSE;
 951                 }
 952
 953                 wps_key = g_supplicant_interface_get_wps_key(interface);
 954                 connman_network_set_string(network, "WiFi.Passphrase",
 955                                         wps_key);
 956
 957                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
 958         }
 959
 960         return TRUE;
 961 }
 962
 963 static connman_bool_t handle_4way_handshake_failure(GSupplicantInterface *interface,
 964                                         struct connman_network *network,
 965                                         struct wifi_data *wifi)
 966 {
 967         if (wifi->state != G_SUPPLICANT_STATE_4WAY_HANDSHAKE)
 968                 return FALSE;
 969
 970         wifi->retries++;
 971
 972         if (wifi->retries < MAXIMUM_RETRIES)
 973                 return TRUE;
 974
 975         connman_network_set_error(network, CONNMAN_NETWORK_ERROR_INVALID_KEY);
 976
 977         return FALSE;
 978 }
 979
 980 static void interface_state(GSupplicantInterface *interface)
 981 {
 982         struct connman_network *network;
 983         struct connman_device *device;
 984         struct wifi_data *wifi;
 985         GSupplicantState state = g_supplicant_interface_get_state(interface);
 986         connman_bool_t wps;
 987
 988         wifi = g_supplicant_interface_get_data(interface);
 989
 990         DBG("wifi %p interface state %d", wifi, state);
 991
 992         if (wifi == NULL)
 993                 return;
 994
 995         network = wifi->network;
 996         device = wifi->device;
 997
 998         if (device == NULL || network == NULL)
 999                 return;
1000
1001         switch (state) {
1002         case G_SUPPLICANT_STATE_SCANNING:
1003                 break;
1004
1005         case G_SUPPLICANT_STATE_AUTHENTICATING:
1006         case G_SUPPLICANT_STATE_ASSOCIATING:
1007                 connman_network_set_associating(network, TRUE);
1008                 break;
1009
1010         case G_SUPPLICANT_STATE_COMPLETED:
1011                 if (handle_wps_completion(interface, network, device, wifi) ==
1012                                                                         FALSE)
1013                         break;
1014
1015                 /* reset scan trigger and schedule background scan */
1016                 connman_device_schedule_scan(device);
1017
1018                 connman_network_set_connected(network, TRUE);
1019                 break;
1020
1021         case G_SUPPLICANT_STATE_DISCONNECTED:
1022                 /*
1023                  * If we're in one of the idle modes, we have
1024                  * not started association yet and thus setting
1025                  * those ones to FALSE could cancel an association
1026                  * in progress.
1027                  */
1028                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
1029                 if (wps == TRUE)
1030                         if (is_idle_wps(interface, wifi) == TRUE)
1031                                 break;
1032
1033                 if (is_idle(wifi))
1034                         break;
1035
1036                 /* If previous state was 4way-handshake, then
1037                  * it's either: psk was incorrect and thus we retry
1038                  * or if we reach the maximum retries we declare the
1039                  * psk as wrong */
1040                 if (handle_4way_handshake_failure(interface,
1041                                                 network, wifi) == TRUE)
1042                         break;
1043
1044                 /* We disable the selected network, if not then
1045                  * wpa_supplicant will loop retrying */
1046                 if (g_supplicant_interface_enable_selected_network(interface,
1047                                                 FALSE) != 0)
1048                         DBG("Could not disables selected network");
1049
1050                 connman_network_set_associating(network, FALSE);
1051                 connman_network_set_connected(network, FALSE);
1052                 break;
1053
1054         case G_SUPPLICANT_STATE_INACTIVE:
1055                 connman_network_set_associating(network, FALSE);
1056                 break;
1057
1058         case G_SUPPLICANT_STATE_UNKNOWN:
1059         case G_SUPPLICANT_STATE_ASSOCIATED:
1060         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
1061         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
1062                 break;
1063         }
1064
1065         wifi->state = state;
1066
1067         DBG("DONE");
1068 }
1069
1070 static void interface_removed(GSupplicantInterface *interface)
1071 {
1072         const char *ifname = g_supplicant_interface_get_ifname(interface);
1073         struct wifi_data *wifi;
1074
1075         DBG("ifname %s", ifname);
1076
1077         wifi = g_supplicant_interface_get_data(interface);
1078
1079         if (wifi != NULL && wifi->tethering == TRUE)
1080                 return;
1081
1082         if (wifi == NULL || wifi->device == NULL) {
1083                 connman_error("Wrong wifi pointer");
1084                 return;
1085         }
1086
1087         wifi->interface = NULL;
1088         connman_device_set_powered(wifi->device, FALSE);
1089 }
1090
1091 static void scan_started(GSupplicantInterface *interface)
1092 {
1093         DBG("");
1094 }
1095
1096 static void scan_finished(GSupplicantInterface *interface)
1097 {
1098         DBG("");
1099 }
1100
1101 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
1102 {
1103         unsigned char strength;
1104
1105         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
1106         if (strength > 100)
1107                 strength = 100;
1108
1109         return strength;
1110 }
1111
1112 static void network_added(GSupplicantNetwork *supplicant_network)
1113 {
1114         struct connman_network *network;
1115         GSupplicantInterface *interface;
1116         struct wifi_data *wifi;
1117         const char *name, *identifier, *security, *group, *mode;
1118         const unsigned char *ssid;
1119         unsigned int ssid_len;
1120         connman_bool_t wps;
1121
1122         DBG("");
1123
1124         interface = g_supplicant_network_get_interface(supplicant_network);
1125         wifi = g_supplicant_interface_get_data(interface);
1126         name = g_supplicant_network_get_name(supplicant_network);
1127         identifier = g_supplicant_network_get_identifier(supplicant_network);
1128         security = g_supplicant_network_get_security(supplicant_network);
1129         group = g_supplicant_network_get_identifier(supplicant_network);
1130         wps = g_supplicant_network_get_wps(supplicant_network);
1131         mode = g_supplicant_network_get_mode(supplicant_network);
1132
1133         if (wifi == NULL)
1134                 return;
1135
1136         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
1137
1138         network = connman_device_get_network(wifi->device, identifier);
1139
1140         if (network == NULL) {
1141                 network = connman_network_create(identifier,
1142                                                 CONNMAN_NETWORK_TYPE_WIFI);
1143                 if (network == NULL)
1144                         return;
1145
1146                 connman_network_set_index(network, wifi->index);
1147
1148                 if (connman_device_add_network(wifi->device, network) < 0) {
1149                         connman_network_unref(network);
1150                         return;
1151                 }
1152
1153                 wifi->networks = g_slist_append(wifi->networks, network);
1154         }
1155
1156         if (name != NULL && name[0] != '\0')
1157                 connman_network_set_name(network, name);
1158
1159         connman_network_set_blob(network, "WiFi.SSID",
1160                                                 ssid, ssid_len);
1161         connman_network_set_string(network, "WiFi.Security", security);
1162         connman_network_set_strength(network,
1163                                 calculate_strength(supplicant_network));
1164         connman_network_set_bool(network, "WiFi.WPS", wps);
1165
1166         connman_network_set_frequency(network,
1167                         g_supplicant_network_get_frequency(supplicant_network));
1168
1169         connman_network_set_available(network, TRUE);
1170         connman_network_set_string(network, "WiFi.Mode", mode);
1171
1172         if (ssid != NULL)
1173                 connman_network_set_group(network, group);
1174
1175         if (wifi->hidden != NULL) {
1176                 if (wifi->hidden->ssid_len == ssid_len &&
1177                                 memcmp(wifi->hidden->ssid, ssid,
1178                                                 ssid_len) == 0) {
1179                         connman_network_connect_hidden(network,
1180                                         wifi->hidden->identity,
1181                                         wifi->hidden->passphrase);
1182                         hidden_free(wifi->hidden);
1183                         wifi->hidden = NULL;
1184                 }
1185         }
1186 }
1187
1188 static void network_removed(GSupplicantNetwork *network)
1189 {
1190         GSupplicantInterface *interface;
1191         struct wifi_data *wifi;
1192         const char *name, *identifier;
1193         struct connman_network *connman_network;
1194
1195         interface = g_supplicant_network_get_interface(network);
1196         wifi = g_supplicant_interface_get_data(interface);
1197         identifier = g_supplicant_network_get_identifier(network);
1198         name = g_supplicant_network_get_name(network);
1199
1200         DBG("name %s", name);
1201
1202         if (wifi == NULL)
1203                 return;
1204
1205         connman_network = connman_device_get_network(wifi->device, identifier);
1206         if (connman_network == NULL)
1207                 return;
1208
1209         wifi->networks = g_slist_remove(wifi->networks, connman_network);
1210
1211         connman_device_remove_network(wifi->device, connman_network);
1212         connman_network_unref(connman_network);
1213 }
1214
1215 static void network_changed(GSupplicantNetwork *network, const char *property)
1216 {
1217         GSupplicantInterface *interface;
1218         struct wifi_data *wifi;
1219         const char *name, *identifier;
1220         struct connman_network *connman_network;
1221
1222         interface = g_supplicant_network_get_interface(network);
1223         wifi = g_supplicant_interface_get_data(interface);
1224         identifier = g_supplicant_network_get_identifier(network);
1225         name = g_supplicant_network_get_name(network);
1226
1227         DBG("name %s", name);
1228
1229         if (wifi == NULL)
1230                 return;
1231
1232         connman_network = connman_device_get_network(wifi->device, identifier);
1233         if (connman_network == NULL)
1234                 return;
1235
1236         if (g_str_equal(property, "Signal") == TRUE) {
1237                connman_network_set_strength(connman_network,
1238                                         calculate_strength(network));
1239                connman_network_update(connman_network);
1240         }
1241 }
1242
1243 static void debug(const char *str)
1244 {
1245         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
1246                 connman_debug("%s", str);
1247 }
1248
1249 static const GSupplicantCallbacks callbacks = {
1250         .system_ready           = system_ready,
1251         .system_killed          = system_killed,
1252         .interface_added        = interface_added,
1253         .interface_state        = interface_state,
1254         .interface_removed      = interface_removed,
1255         .scan_started           = scan_started,
1256         .scan_finished          = scan_finished,
1257         .network_added          = network_added,
1258         .network_removed        = network_removed,
1259         .network_changed        = network_changed,
1260         .debug                  = debug,
1261 };
1262
1263
1264 static int tech_probe(struct connman_technology *technology)
1265 {
1266         wifi_technology = technology;
1267
1268         return 0;
1269 }
1270
1271 static void tech_remove(struct connman_technology *technology)
1272 {
1273         wifi_technology = NULL;
1274 }
1275
1276 struct wifi_tethering_info {
1277         struct wifi_data *wifi;
1278         struct connman_technology *technology;
1279         char *ifname;
1280         GSupplicantSSID *ssid;
1281 };
1282
1283 static GSupplicantSSID *ssid_ap_init(const char *ssid, const char *passphrase)
1284 {
1285         GSupplicantSSID *ap;
1286
1287         ap = g_try_malloc0(sizeof(GSupplicantSSID));
1288         if (ap == NULL)
1289                 return NULL;
1290
1291         ap->mode = G_SUPPLICANT_MODE_MASTER;
1292         ap->ssid = ssid;
1293         ap->ssid_len = strlen(ssid);
1294         ap->scan_ssid = 0;
1295         ap->freq = 2412;
1296
1297         if (passphrase == NULL || strlen(passphrase) == 0) {
1298                 ap->security = G_SUPPLICANT_SECURITY_NONE;
1299                 ap->passphrase = NULL;
1300         } else {
1301                ap->security = G_SUPPLICANT_SECURITY_PSK;
1302                ap->protocol = G_SUPPLICANT_PROTO_RSN;
1303                ap->pairwise_cipher = G_SUPPLICANT_PAIRWISE_CCMP;
1304                ap->group_cipher = G_SUPPLICANT_GROUP_CCMP;
1305                ap->passphrase = passphrase;
1306         }
1307
1308         return ap;
1309 }
1310
1311 static void ap_start_callback(int result, GSupplicantInterface *interface,
1312                                                         void *user_data)
1313 {
1314         struct wifi_tethering_info *info = user_data;
1315
1316         DBG("result %d index %d bridge %s",
1317                 result, info->wifi->index, info->wifi->bridge);
1318
1319         if (result < 0) {
1320                 connman_inet_remove_from_bridge(info->wifi->index,
1321                                                         info->wifi->bridge);
1322                 connman_technology_tethering_notify(info->technology, FALSE);
1323         }
1324
1325         g_free(info->ifname);
1326         g_free(info);
1327 }
1328
1329 static void ap_create_callback(int result,
1330                                 GSupplicantInterface *interface,
1331                                         void *user_data)
1332 {
1333         struct wifi_tethering_info *info = user_data;
1334
1335         DBG("result %d ifname %s", result,
1336                                 g_supplicant_interface_get_ifname(interface));
1337
1338         if (result < 0) {
1339                 connman_inet_remove_from_bridge(info->wifi->index,
1340                                                         info->wifi->bridge);
1341                 connman_technology_tethering_notify(info->technology, FALSE);
1342
1343                 g_free(info->ifname);
1344                 g_free(info);
1345                 return;
1346         }
1347
1348         info->wifi->interface = interface;
1349         g_supplicant_interface_set_data(interface, info->wifi);
1350
1351         if (g_supplicant_interface_set_apscan(interface, 2) < 0)
1352                 connman_error("Failed to set interface ap_scan property");
1353
1354         g_supplicant_interface_connect(interface, info->ssid,
1355                                                 ap_start_callback, info);
1356 }
1357
1358 static void sta_remove_callback(int result,
1359                                 GSupplicantInterface *interface,
1360                                         void *user_data)
1361 {
1362         struct wifi_tethering_info *info = user_data;
1363         const char *driver = connman_option_get_string("wifi");
1364
1365         DBG("ifname %s result %d ", info->ifname, result);
1366
1367         if (result < 0) {
1368                 info->wifi->tethering = TRUE;
1369
1370                 g_free(info->ifname);
1371                 g_free(info);
1372                 return;
1373         }
1374
1375         info->wifi->interface = NULL;
1376
1377         connman_technology_tethering_notify(info->technology, TRUE);
1378
1379         g_supplicant_interface_create(info->ifname, driver, info->wifi->bridge,
1380                                                 ap_create_callback,
1381                                                         info);
1382 }
1383
1384 static int tech_set_tethering(struct connman_technology *technology,
1385                                 const char *identifier, const char *passphrase,
1386                                 const char *bridge, connman_bool_t enabled)
1387 {
1388         GList *list;
1389         GSupplicantInterface *interface;
1390         struct wifi_data *wifi;
1391         struct wifi_tethering_info *info;
1392         const char *ifname;
1393         unsigned int mode;
1394         int err;
1395
1396         DBG("");
1397
1398         if (enabled == FALSE) {
1399                 for (list = iface_list; list; list = list->next) {
1400                         wifi = list->data;
1401
1402                         if (wifi->tethering == TRUE) {
1403                                 wifi->tethering = FALSE;
1404
1405                                 connman_inet_remove_from_bridge(wifi->index,
1406                                                                         bridge);
1407                                 wifi->bridged = FALSE;
1408                         }
1409                 }
1410
1411                 connman_technology_tethering_notify(technology, FALSE);
1412
1413                 return 0;
1414         }
1415
1416         for (list = iface_list; list; list = list->next) {
1417                 wifi = list->data;
1418
1419                 interface = wifi->interface;
1420
1421                 if (interface == NULL)
1422                         continue;
1423
1424                 ifname = g_supplicant_interface_get_ifname(wifi->interface);
1425
1426                 mode = g_supplicant_interface_get_mode(interface);
1427                 if ((mode & G_SUPPLICANT_CAPABILITY_MODE_AP) == 0) {
1428                         DBG("%s does not support AP mode", ifname);
1429                         continue;
1430                 }
1431
1432                 info = g_try_malloc0(sizeof(struct wifi_tethering_info));
1433                 if (info == NULL)
1434                         return -ENOMEM;
1435
1436                 info->wifi = wifi;
1437                 info->technology = technology;
1438                 info->wifi->bridge = bridge;
1439                 info->ssid = ssid_ap_init(identifier, passphrase);
1440                 if (info->ssid == NULL) {
1441                         g_free(info);
1442                         continue;
1443                 }
1444                 info->ifname = g_strdup(ifname);
1445                 if (info->ifname == NULL) {
1446                         g_free(info);
1447                         continue;
1448                 }
1449
1450                 info->wifi->tethering = TRUE;
1451
1452                 err = g_supplicant_interface_remove(interface,
1453                                                 sta_remove_callback,
1454                                                         info);
1455                 if (err == 0)
1456                         return err;
1457         }
1458
1459         return -EOPNOTSUPP;
1460 }
1461
1462 static void regdom_callback(void *user_data)
1463 {
1464         char *alpha2 = user_data;
1465
1466         DBG("");
1467
1468         if (wifi_technology == NULL)
1469                 return;
1470
1471         connman_technology_regdom_notify(wifi_technology, alpha2);
1472 }
1473
1474 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
1475 {
1476         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
1477 }
1478
1479 static struct connman_technology_driver tech_driver = {
1480         .name           = "wifi",
1481         .type           = CONNMAN_SERVICE_TYPE_WIFI,
1482         .probe          = tech_probe,
1483         .remove         = tech_remove,
1484         .set_tethering  = tech_set_tethering,
1485         .set_regdom     = tech_set_regdom,
1486 };
1487
1488 static int wifi_init(void)
1489 {
1490         int err;
1491
1492         err = connman_network_driver_register(&network_driver);
1493         if (err < 0)
1494                 return err;
1495
1496         err = g_supplicant_register(&callbacks);
1497         if (err < 0) {
1498                 connman_network_driver_unregister(&network_driver);
1499                 return err;
1500         }
1501
1502         err = connman_technology_driver_register(&tech_driver);
1503         if (err < 0) {
1504                 g_supplicant_unregister(&callbacks);
1505                 connman_network_driver_unregister(&network_driver);
1506                 return err;
1507         }
1508
1509         return 0;
1510 }
1511
1512 static void wifi_exit(void)
1513 {
1514         DBG();
1515
1516         connman_technology_driver_unregister(&tech_driver);
1517
1518         g_supplicant_unregister(&callbacks);
1519
1520         connman_network_driver_unregister(&network_driver);
1521 }
1522
1523 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
1524                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)