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