plugins/wifi.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <errno.h>
  29 #include <string.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32 #include <linux/if_arp.h>
  33 #include <linux/wireless.h>
  34 #include <net/ethernet.h>
  35
  36 #ifndef IFF_LOWER_UP
  37 #define IFF_LOWER_UP    0x10000
  38 #endif
  39
  40 #include <dbus/dbus.h>
  41 #include <glib.h>
  42
  43 #define CONNMAN_API_SUBJECT_TO_CHANGE
  44 #include <connman/plugin.h>
  45 #include <connman/inet.h>
  46 #include <connman/device.h>
  47 #include <connman/rtnl.h>
  48 #include <connman/technology.h>
  49 #include <connman/log.h>
  50 #include <connman/option.h>
  51
  52 #include <gsupplicant/gsupplicant.h>
  53
  54 #define CLEANUP_TIMEOUT   8     /* in seconds */
  55 #define INACTIVE_TIMEOUT  12    /* in seconds */
  56
  57 struct connman_technology *wifi_technology = NULL;
  58
  59 struct wifi_data {
  60         char *identifier;
  61         struct connman_device *device;
  62         struct connman_network *network;
  63         struct connman_network *pending_network;
  64         GSList *networks;
  65         GSupplicantInterface *interface;
  66         GSupplicantState state;
  67         connman_bool_t connected;
  68         connman_bool_t disconnecting;
  69         connman_bool_t tethering;
  70         connman_bool_t bridged;
  71         const char *bridge;
  72         int index;
  73         unsigned flags;
  74         unsigned int watch;
  75 };
  76
  77 static GList *iface_list = NULL;
  78
  79 static void handle_tethering(struct wifi_data *wifi)
  80 {
  81         if (wifi->tethering == FALSE)
  82                 return;
  83
  84         if (wifi->bridge == NULL)
  85                 return;
  86
  87         if (wifi->bridged == TRUE)
  88                 return;
  89
  90         DBG("index %d bridge %s", wifi->index, wifi->bridge);
  91
  92         if (connman_inet_add_to_bridge(wifi->index, wifi->bridge) < 0)
  93                 return;
  94
  95         wifi->bridged = TRUE;
  96 }
  97
  98 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
  99 {
 100         struct connman_device *device = user_data;
 101         struct wifi_data *wifi = connman_device_get_data(device);
 102
 103         DBG("index %d flags %d change %d", wifi->index, flags, change);
 104
 105         if (!change)
 106                 return;
 107
 108         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 109                 if (flags & IFF_UP)
 110                         DBG("interface up");
 111                 else
 112                         DBG("interface down");
 113         }
 114
 115         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 116                 if (flags & IFF_LOWER_UP) {
 117                         DBG("carrier on");
 118
 119                         handle_tethering(wifi);
 120                 } else
 121                         DBG("carrier off");
 122         }
 123
 124         wifi->flags = flags;
 125 }
 126
 127 static int wifi_probe(struct connman_device *device)
 128 {
 129         struct wifi_data *wifi;
 130
 131         DBG("device %p", device);
 132
 133         wifi = g_try_new0(struct wifi_data, 1);
 134         if (wifi == NULL)
 135                 return -ENOMEM;
 136
 137         wifi->connected = FALSE;
 138         wifi->disconnecting = FALSE;
 139         wifi->tethering = FALSE;
 140         wifi->bridged = FALSE;
 141         wifi->bridge = NULL;
 142         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 143
 144         connman_device_set_data(device, wifi);
 145         wifi->device = connman_device_ref(device);
 146
 147         wifi->index = connman_device_get_index(device);
 148         wifi->flags = 0;
 149
 150         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 151                                                         wifi_newlink, device);
 152
 153         iface_list = g_list_append(iface_list, wifi);
 154
 155         return 0;
 156 }
 157
 158 static void remove_networks(struct connman_device *device,
 159                                 struct wifi_data *wifi)
 160 {
 161         GSList *list;
 162
 163         for (list = wifi->networks; list != NULL; list = list->next) {
 164                 struct connman_network *network = list->data;
 165
 166                 connman_device_remove_network(device, network);
 167                 connman_network_unref(network);
 168         }
 169
 170         g_slist_free(wifi->networks);
 171         wifi->networks = NULL;
 172 }
 173
 174 static void wifi_remove(struct connman_device *device)
 175 {
 176         struct wifi_data *wifi = connman_device_get_data(device);
 177
 178         DBG("device %p", device);
 179
 180         if (wifi == NULL)
 181                 return;
 182
 183         iface_list = g_list_remove(iface_list, wifi);
 184
 185         remove_networks(device, wifi);
 186
 187         connman_device_set_data(device, NULL);
 188         connman_device_unref(wifi->device);
 189         connman_rtnl_remove_watch(wifi->watch);
 190
 191         g_supplicant_interface_set_data(wifi->interface, NULL);
 192
 193         g_free(wifi->identifier);
 194         g_free(wifi);
 195 }
 196
 197 static void interface_create_callback(int result,
 198                                         GSupplicantInterface *interface,
 199                                                         void *user_data)
 200 {
 201         struct wifi_data *wifi = user_data;
 202
 203         DBG("result %d ifname %s, wifi %p", result,
 204                                 g_supplicant_interface_get_ifname(interface),
 205                                 wifi);
 206
 207         if (result < 0 || wifi == NULL)
 208                 return;
 209
 210         wifi->interface = interface;
 211         g_supplicant_interface_set_data(interface, wifi);
 212 }
 213
 214 static void interface_remove_callback(int result,
 215                                         GSupplicantInterface *interface,
 216                                                         void *user_data)
 217 {
 218         struct wifi_data *wifi = user_data;
 219
 220         DBG("result %d wifi %p", result, wifi);
 221
 222         if (result < 0 || wifi == NULL)
 223                 return;
 224
 225         wifi->interface = NULL;
 226 }
 227
 228
 229 static int wifi_enable(struct connman_device *device)
 230 {
 231         struct wifi_data *wifi = connman_device_get_data(device);
 232         const char *interface = connman_device_get_string(device, "Interface");
 233         const char *driver = connman_option_get_string("wifi");
 234         int ret;
 235
 236         DBG("device %p %p", device, wifi);
 237
 238         ret = g_supplicant_interface_create(interface, driver, NULL,
 239                                                 interface_create_callback,
 240                                                         wifi);
 241         if (ret < 0)
 242                 return ret;
 243
 244         return -EINPROGRESS;
 245 }
 246
 247 static int wifi_disable(struct connman_device *device)
 248 {
 249         struct wifi_data *wifi = connman_device_get_data(device);
 250         int ret;
 251
 252         DBG("device %p", device);
 253
 254         wifi->connected = FALSE;
 255         wifi->disconnecting = FALSE;
 256
 257         if (wifi->pending_network != NULL)
 258                 wifi->pending_network = NULL;
 259
 260         remove_networks(device, wifi);
 261
 262         ret = g_supplicant_interface_remove(wifi->interface,
 263                                                 interface_remove_callback,
 264                                                         wifi);
 265         if (ret < 0)
 266                 return ret;
 267
 268         return -EINPROGRESS;
 269 }
 270
 271 static void scan_callback(int result, GSupplicantInterface *interface,
 272                                                 void *user_data)
 273 {
 274         struct connman_device *device = user_data;
 275
 276         DBG("result %d", result);
 277
 278         if (result < 0)
 279                 connman_device_reset_scanning(device);
 280         else
 281                 connman_device_set_scanning(device, FALSE);
 282 }
 283
 284 static int wifi_scan(struct connman_device *device)
 285 {
 286         struct wifi_data *wifi = connman_device_get_data(device);
 287         int ret;
 288
 289         DBG("device %p %p", device, wifi->interface);
 290
 291         if (wifi->tethering == TRUE)
 292                 return 0;
 293
 294         ret = g_supplicant_interface_scan(wifi->interface, scan_callback,
 295                                                                 device);
 296         if (ret == 0)
 297                 connman_device_set_scanning(device, TRUE);
 298
 299         return ret;
 300 }
 301
 302 static struct connman_device_driver wifi_ng_driver = {
 303         .name           = "wifi",
 304         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 305         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 306         .probe          = wifi_probe,
 307         .remove         = wifi_remove,
 308         .enable         = wifi_enable,
 309         .disable        = wifi_disable,
 310         .scan           = wifi_scan,
 311 };
 312
 313 static void system_ready(void)
 314 {
 315         DBG("");
 316
 317         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 318                 connman_error("Failed to register WiFi driver");
 319 }
 320
 321 static void system_killed(void)
 322 {
 323         DBG("");
 324
 325         connman_device_driver_unregister(&wifi_ng_driver);
 326 }
 327
 328 static int network_probe(struct connman_network *network)
 329 {
 330         DBG("network %p", network);
 331
 332         return 0;
 333 }
 334
 335 static void network_remove(struct connman_network *network)
 336 {
 337         struct connman_device *device = connman_network_get_device(network);
 338         struct wifi_data *wifi;
 339
 340         DBG("network %p", network);
 341
 342         wifi = connman_device_get_data(device);
 343         if (wifi == NULL)
 344                 return;
 345
 346         if (wifi->network != network)
 347                 return;
 348
 349         wifi->network = NULL;
 350 }
 351
 352 static void connect_callback(int result, GSupplicantInterface *interface,
 353                                                         void *user_data)
 354 {
 355         struct connman_network *network = user_data;
 356
 357         DBG("network %p result %d", network, result);
 358
 359         if (result == -ENOKEY) {
 360                 connman_network_set_error(network,
 361                                         CONNMAN_NETWORK_ERROR_INVALID_KEY);
 362         } else if (result < 0) {
 363                 connman_network_set_error(network,
 364                                         CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
 365         }
 366 }
 367
 368 static GSupplicantSecurity network_security(const char *security)
 369 {
 370         if (g_str_equal(security, "none") == TRUE)
 371                 return G_SUPPLICANT_SECURITY_NONE;
 372         else if (g_str_equal(security, "wep") == TRUE)
 373                 return G_SUPPLICANT_SECURITY_WEP;
 374         else if (g_str_equal(security, "psk") == TRUE)
 375                 return G_SUPPLICANT_SECURITY_PSK;
 376         else if (g_str_equal(security, "wpa") == TRUE)
 377                 return G_SUPPLICANT_SECURITY_PSK;
 378         else if (g_str_equal(security, "rsn") == TRUE)
 379                 return G_SUPPLICANT_SECURITY_PSK;
 380         else if (g_str_equal(security, "ieee8021x") == TRUE)
 381                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 382
 383         return G_SUPPLICANT_SECURITY_UNKNOWN;
 384 }
 385
 386 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 387 {
 388         const char *security, *passphrase, *agent_passphrase;
 389
 390         memset(ssid, 0, sizeof(*ssid));
 391         ssid->mode = G_SUPPLICANT_MODE_INFRA;
 392         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 393                                                 &ssid->ssid_len);
 394         ssid->scan_ssid = 1;
 395         security = connman_network_get_string(network, "WiFi.Security");
 396         ssid->security = network_security(security);
 397         passphrase = connman_network_get_string(network,
 398                                                 "WiFi.Passphrase");
 399         if (passphrase == NULL || strlen(passphrase) == 0) {
 400
 401                 /* Use agent provided passphrase as a fallback */
 402                 agent_passphrase = connman_network_get_string(network,
 403                                                 "WiFi.AgentPassphrase");
 404
 405                 if (agent_passphrase == NULL || strlen(agent_passphrase) == 0)
 406                         ssid->passphrase = NULL;
 407                 else
 408                         ssid->passphrase = agent_passphrase;
 409         } else
 410                 ssid->passphrase = passphrase;
 411
 412         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 413
 414         /*
 415          * If our private key password is unset,
 416          * we use the supplied passphrase. That is needed
 417          * for PEAP where 2 passphrases (identity and client
 418          * cert may have to be provided.
 419          */
 420         if (connman_network_get_string(network,
 421                                         "WiFi.PrivateKeyPassphrase") == NULL)
 422                 connman_network_set_string(network,
 423                                                 "WiFi.PrivateKeyPassphrase",
 424                                                 ssid->passphrase);
 425         /* We must have an identity for both PEAP and TLS */
 426         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 427
 428         /* Use agent provided identity as a fallback */
 429         if (ssid->identity == NULL || strlen(ssid->identity) == 0)
 430                 ssid->identity = connman_network_get_string(network,
 431                                                         "WiFi.AgentIdentity");
 432
 433         ssid->ca_cert_path = connman_network_get_string(network,
 434                                                         "WiFi.CACertFile");
 435         ssid->client_cert_path = connman_network_get_string(network,
 436                                                         "WiFi.ClientCertFile");
 437         ssid->private_key_path = connman_network_get_string(network,
 438                                                         "WiFi.PrivateKeyFile");
 439         ssid->private_key_passphrase = connman_network_get_string(network,
 440                                                 "WiFi.PrivateKeyPassphrase");
 441         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 442
 443         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
 444         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
 445
 446 }
 447
 448 static int network_connect(struct connman_network *network)
 449 {
 450         struct connman_device *device = connman_network_get_device(network);
 451         struct wifi_data *wifi;
 452         GSupplicantInterface *interface;
 453         GSupplicantSSID *ssid;
 454
 455         DBG("network %p", network);
 456
 457         if (device == NULL)
 458                 return -ENODEV;
 459
 460         wifi = connman_device_get_data(device);
 461         if (wifi == NULL)
 462                 return -ENODEV;
 463
 464         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
 465         if (ssid == NULL)
 466                 return -ENOMEM;
 467
 468         interface = wifi->interface;
 469
 470         ssid_init(ssid, network);
 471
 472         if (wifi->disconnecting == TRUE)
 473                 wifi->pending_network = network;
 474         else {
 475                 wifi->network = network;
 476
 477                 return g_supplicant_interface_connect(interface, ssid,
 478                                                 connect_callback, network);
 479         }
 480
 481         return -EINPROGRESS;
 482 }
 483
 484 static void disconnect_callback(int result, GSupplicantInterface *interface,
 485                                                                 void *user_data)
 486 {
 487         struct wifi_data *wifi = user_data;
 488
 489         if (wifi->network != NULL) {
 490                 /*
 491                  * if result < 0 supplican return an error because
 492                  * the network is not current.
 493                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 494                  * failed, call connman_network_set_connected to report
 495                  * disconnect is completed.
 496                  */
 497                 if (result < 0)
 498                         connman_network_set_connected(wifi->network, FALSE);
 499         }
 500
 501         wifi->network = NULL;
 502
 503         wifi->disconnecting = FALSE;
 504
 505         if (wifi->pending_network != NULL) {
 506                 network_connect(wifi->pending_network);
 507                 wifi->pending_network = NULL;
 508         }
 509
 510 }
 511
 512 static int network_disconnect(struct connman_network *network)
 513 {
 514         struct connman_device *device = connman_network_get_device(network);
 515         struct wifi_data *wifi;
 516         int err;
 517
 518         DBG("network %p", network);
 519
 520         wifi = connman_device_get_data(device);
 521         if (wifi == NULL || wifi->interface == NULL)
 522                 return -ENODEV;
 523
 524         connman_network_set_associating(network, FALSE);
 525
 526         if (wifi->disconnecting == TRUE)
 527                 return -EALREADY;
 528
 529         wifi->disconnecting = TRUE;
 530
 531         err = g_supplicant_interface_disconnect(wifi->interface,
 532                                                 disconnect_callback, wifi);
 533         if (err < 0)
 534                 wifi->disconnecting = FALSE;
 535
 536         return err;
 537 }
 538
 539 static struct connman_network_driver network_driver = {
 540         .name           = "wifi",
 541         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 542         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 543         .probe          = network_probe,
 544         .remove         = network_remove,
 545         .connect        = network_connect,
 546         .disconnect     = network_disconnect,
 547 };
 548
 549 static void interface_added(GSupplicantInterface *interface)
 550 {
 551         const char *ifname = g_supplicant_interface_get_ifname(interface);
 552         const char *driver = g_supplicant_interface_get_driver(interface);
 553         struct wifi_data *wifi;
 554
 555         wifi = g_supplicant_interface_get_data(interface);
 556
 557         /*
 558          * We can get here with a NULL wifi pointer when
 559          * the interface added signal is sent before the
 560          * interface creation callback is called.
 561          */
 562         if (wifi == NULL)
 563                 return;
 564
 565         DBG("ifname %s driver %s wifi %p tethering %d",
 566                         ifname, driver, wifi, wifi->tethering);
 567
 568         if (wifi->device == NULL) {
 569                 connman_error("WiFi device not set");
 570                 return;
 571         }
 572
 573         connman_device_set_powered(wifi->device, TRUE);
 574
 575         if (wifi->tethering == TRUE)
 576                 return;
 577
 578         wifi_scan(wifi->device);
 579 }
 580
 581 static connman_bool_t is_idle(struct wifi_data *wifi)
 582 {
 583         DBG("state %d", wifi->state);
 584
 585         switch (wifi->state) {
 586         case G_SUPPLICANT_STATE_UNKNOWN:
 587         case G_SUPPLICANT_STATE_DISCONNECTED:
 588         case G_SUPPLICANT_STATE_INACTIVE:
 589         case G_SUPPLICANT_STATE_SCANNING:
 590                 return TRUE;
 591
 592         case G_SUPPLICANT_STATE_AUTHENTICATING:
 593         case G_SUPPLICANT_STATE_ASSOCIATING:
 594         case G_SUPPLICANT_STATE_ASSOCIATED:
 595         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 596         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 597         case G_SUPPLICANT_STATE_COMPLETED:
 598                 return FALSE;
 599         }
 600
 601         return FALSE;
 602 }
 603
 604 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
 605                                                 struct wifi_data *wifi)
 606 {
 607         /* First, let's check if WPS processing did not went wrong */
 608         if (g_supplicant_interface_get_wps_state(interface) ==
 609                 G_SUPPLICANT_WPS_STATE_FAIL)
 610                 return FALSE;
 611
 612         /* Unlike normal connection, being associated while processing wps
 613          * actually means that we are idling. */
 614         switch (wifi->state) {
 615         case G_SUPPLICANT_STATE_UNKNOWN:
 616         case G_SUPPLICANT_STATE_DISCONNECTED:
 617         case G_SUPPLICANT_STATE_INACTIVE:
 618         case G_SUPPLICANT_STATE_SCANNING:
 619         case G_SUPPLICANT_STATE_ASSOCIATED:
 620                 return TRUE;
 621         case G_SUPPLICANT_STATE_AUTHENTICATING:
 622         case G_SUPPLICANT_STATE_ASSOCIATING:
 623         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 624         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 625         case G_SUPPLICANT_STATE_COMPLETED:
 626                 return FALSE;
 627         }
 628
 629         return FALSE;
 630 }
 631
 632 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
 633                                         struct connman_network *network,
 634                                         struct connman_device *device,
 635                                         struct wifi_data *wifi)
 636 {
 637         connman_bool_t wps;
 638
 639         wps = connman_network_get_bool(network, "WiFi.UseWPS");
 640         if (wps == TRUE) {
 641                 const unsigned char *ssid, *wps_ssid;
 642                 unsigned int ssid_len, wps_ssid_len;
 643                 const char *wps_key;
 644
 645                 /* Checking if we got associated with requested
 646                  * network */
 647                 ssid = connman_network_get_blob(network, "WiFi.SSID",
 648                                                 &ssid_len);
 649
 650                 wps_ssid = g_supplicant_interface_get_wps_ssid(
 651                         interface, &wps_ssid_len);
 652
 653                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
 654                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
 655                         connman_network_set_associating(network, FALSE);
 656                         g_supplicant_interface_disconnect(wifi->interface,
 657                                                 disconnect_callback, wifi);
 658                         return FALSE;
 659                 }
 660
 661                 wps_key = g_supplicant_interface_get_wps_key(interface);
 662                 connman_network_set_string(network, "WiFi.Passphrase",
 663                                         wps_key);
 664
 665                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
 666         }
 667
 668         return TRUE;
 669 }
 670
 671 static void interface_state(GSupplicantInterface *interface)
 672 {
 673         struct connman_network *network;
 674         struct connman_device *device;
 675         struct wifi_data *wifi;
 676         GSupplicantState state = g_supplicant_interface_get_state(interface);
 677         connman_bool_t wps;
 678
 679         wifi = g_supplicant_interface_get_data(interface);
 680
 681         DBG("wifi %p interface state %d", wifi, state);
 682
 683         if (wifi == NULL)
 684                 return;
 685
 686         network = wifi->network;
 687         device = wifi->device;
 688
 689         if (device == NULL || network == NULL)
 690                 return;
 691
 692         switch (state) {
 693         case G_SUPPLICANT_STATE_SCANNING:
 694                 break;
 695
 696         case G_SUPPLICANT_STATE_AUTHENTICATING:
 697         case G_SUPPLICANT_STATE_ASSOCIATING:
 698                 connman_network_set_associating(network, TRUE);
 699                 break;
 700
 701         case G_SUPPLICANT_STATE_COMPLETED:
 702                 if (handle_wps_completion(interface, network, device, wifi) ==
 703                                                                         FALSE)
 704                         break;
 705
 706                 /* reset scan trigger and schedule background scan */
 707                 connman_device_schedule_scan(device);
 708
 709                 connman_network_set_connected(network, TRUE);
 710                 break;
 711
 712         case G_SUPPLICANT_STATE_DISCONNECTED:
 713                 /*
 714                  * If we're in one of the idle modes, we have
 715                  * not started association yet and thus setting
 716                  * those ones to FALSE could cancel an association
 717                  * in progress.
 718                  */
 719                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
 720                 if (wps == TRUE)
 721                         if (is_idle_wps(interface, wifi) == TRUE)
 722                                 break;
 723
 724                 if (is_idle(wifi))
 725                         break;
 726                 connman_network_set_associating(network, FALSE);
 727                 connman_network_set_connected(network, FALSE);
 728                 break;
 729
 730         case G_SUPPLICANT_STATE_INACTIVE:
 731                 connman_network_set_associating(network, FALSE);
 732                 break;
 733
 734         case G_SUPPLICANT_STATE_UNKNOWN:
 735         case G_SUPPLICANT_STATE_ASSOCIATED:
 736         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 737         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 738                 break;
 739         }
 740
 741         wifi->state = state;
 742
 743         DBG("DONE");
 744 }
 745
 746 static void interface_removed(GSupplicantInterface *interface)
 747 {
 748         const char *ifname = g_supplicant_interface_get_ifname(interface);
 749         struct wifi_data *wifi;
 750
 751         DBG("ifname %s", ifname);
 752
 753         wifi = g_supplicant_interface_get_data(interface);
 754
 755         if (wifi != NULL && wifi->tethering == TRUE)
 756                 return;
 757
 758         if (wifi == NULL || wifi->device == NULL) {
 759                 connman_error("Wrong wifi pointer");
 760                 return;
 761         }
 762
 763         connman_device_set_powered(wifi->device, FALSE);
 764 }
 765
 766 static void scan_started(GSupplicantInterface *interface)
 767 {
 768         DBG("");
 769 }
 770
 771 static void scan_finished(GSupplicantInterface *interface)
 772 {
 773         DBG("");
 774 }
 775
 776 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
 777 {
 778         unsigned char strength;
 779
 780         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
 781         if (strength > 100)
 782                 strength = 100;
 783
 784         return strength;
 785 }
 786
 787 static void network_added(GSupplicantNetwork *supplicant_network)
 788 {
 789         struct connman_network *network;
 790         GSupplicantInterface *interface;
 791         struct wifi_data *wifi;
 792         const char *name, *identifier, *security, *group;
 793         const unsigned char *ssid;
 794         unsigned int ssid_len;
 795         connman_bool_t wps;
 796
 797         DBG("");
 798
 799         interface = g_supplicant_network_get_interface(supplicant_network);
 800         wifi = g_supplicant_interface_get_data(interface);
 801         name = g_supplicant_network_get_name(supplicant_network);
 802         identifier = g_supplicant_network_get_identifier(supplicant_network);
 803         security = g_supplicant_network_get_security(supplicant_network);
 804         group = g_supplicant_network_get_identifier(supplicant_network);
 805         wps = g_supplicant_network_get_wps(supplicant_network);
 806
 807         if (wifi == NULL)
 808                 return;
 809
 810         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
 811
 812         network = connman_device_get_network(wifi->device, identifier);
 813
 814         if (network == NULL) {
 815                 network = connman_network_create(identifier,
 816                                                 CONNMAN_NETWORK_TYPE_WIFI);
 817                 if (network == NULL)
 818                         return;
 819
 820                 connman_network_set_index(network, wifi->index);
 821
 822                 if (connman_device_add_network(wifi->device, network) < 0) {
 823                         connman_network_unref(network);
 824                         return;
 825                 }
 826
 827                 wifi->networks = g_slist_append(wifi->networks, network);
 828         }
 829
 830         if (name != NULL && name[0] != '\0')
 831                 connman_network_set_name(network, name);
 832
 833         connman_network_set_blob(network, "WiFi.SSID",
 834                                                 ssid, ssid_len);
 835         connman_network_set_string(network, "WiFi.Security", security);
 836         connman_network_set_strength(network,
 837                                 calculate_strength(supplicant_network));
 838         connman_network_set_bool(network, "WiFi.WPS", wps);
 839
 840         connman_network_set_available(network, TRUE);
 841
 842         if (ssid != NULL)
 843                 connman_network_set_group(network, group);
 844 }
 845
 846 static void network_removed(GSupplicantNetwork *network)
 847 {
 848         GSupplicantInterface *interface;
 849         struct wifi_data *wifi;
 850         const char *name, *identifier;
 851         struct connman_network *connman_network;
 852
 853         interface = g_supplicant_network_get_interface(network);
 854         wifi = g_supplicant_interface_get_data(interface);
 855         identifier = g_supplicant_network_get_identifier(network);
 856         name = g_supplicant_network_get_name(network);
 857
 858         DBG("name %s", name);
 859
 860         if (wifi == NULL)
 861                 return;
 862
 863         connman_network = connman_device_get_network(wifi->device, identifier);
 864         if (connman_network == NULL)
 865                 return;
 866
 867         wifi->networks = g_slist_remove(wifi->networks, connman_network);
 868
 869         connman_device_remove_network(wifi->device, connman_network);
 870         connman_network_unref(connman_network);
 871 }
 872
 873 static void network_changed(GSupplicantNetwork *network, const char *property)
 874 {
 875         GSupplicantInterface *interface;
 876         struct wifi_data *wifi;
 877         const char *name, *identifier;
 878         struct connman_network *connman_network;
 879
 880         interface = g_supplicant_network_get_interface(network);
 881         wifi = g_supplicant_interface_get_data(interface);
 882         identifier = g_supplicant_network_get_identifier(network);
 883         name = g_supplicant_network_get_name(network);
 884
 885         DBG("name %s", name);
 886
 887         if (wifi == NULL)
 888                 return;
 889
 890         connman_network = connman_device_get_network(wifi->device, identifier);
 891         if (connman_network == NULL)
 892                 return;
 893
 894         if (g_str_equal(property, "Signal") == TRUE) {
 895                connman_network_set_strength(connman_network,
 896                                         calculate_strength(network));
 897                connman_network_update(connman_network);
 898         }
 899 }
 900
 901 static void debug(const char *str)
 902 {
 903         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
 904                 connman_debug("%s", str);
 905 }
 906
 907 static const GSupplicantCallbacks callbacks = {
 908         .system_ready           = system_ready,
 909         .system_killed          = system_killed,
 910         .interface_added        = interface_added,
 911         .interface_state        = interface_state,
 912         .interface_removed      = interface_removed,
 913         .scan_started           = scan_started,
 914         .scan_finished          = scan_finished,
 915         .network_added          = network_added,
 916         .network_removed        = network_removed,
 917         .network_changed        = network_changed,
 918         .debug                  = debug,
 919 };
 920
 921
 922 static int tech_probe(struct connman_technology *technology)
 923 {
 924         wifi_technology = technology;
 925
 926         return 0;
 927 }
 928
 929 static void tech_remove(struct connman_technology *technology)
 930 {
 931         wifi_technology = NULL;
 932 }
 933
 934 struct wifi_tethering_info {
 935         struct wifi_data *wifi;
 936         struct connman_technology *technology;
 937         char *ifname;
 938         GSupplicantSSID *ssid;
 939 };
 940
 941 static GSupplicantSSID *ssid_ap_init(const char *ssid, const char *passphrase)
 942 {
 943         GSupplicantSSID *ap;
 944
 945         ap = g_try_malloc0(sizeof(GSupplicantSSID));
 946         if (ap == NULL)
 947                 return NULL;
 948
 949         ap->mode = G_SUPPLICANT_MODE_MASTER;
 950         ap->ssid = ssid;
 951         ap->ssid_len = strlen(ssid);
 952         ap->scan_ssid = 0;
 953         ap->freq = 2412;
 954
 955         if (passphrase == NULL || strlen(passphrase) == 0) {
 956                 ap->security = G_SUPPLICANT_SECURITY_NONE;
 957                 ap->passphrase = NULL;
 958         } else {
 959                ap->security = G_SUPPLICANT_SECURITY_PSK;
 960                ap->protocol = G_SUPPLICANT_PROTO_RSN;
 961                ap->pairwise_cipher = G_SUPPLICANT_PAIRWISE_CCMP;
 962                ap->group_cipher = G_SUPPLICANT_GROUP_CCMP;
 963                ap->passphrase = passphrase;
 964         }
 965
 966         return ap;
 967 }
 968
 969 static void ap_start_callback(int result, GSupplicantInterface *interface,
 970                                                         void *user_data)
 971 {
 972         struct wifi_tethering_info *info = user_data;
 973
 974         DBG("result %d index %d bridge %s",
 975                 result, info->wifi->index, info->wifi->bridge);
 976
 977         if (result < 0) {
 978                 connman_inet_remove_from_bridge(info->wifi->index,
 979                                                         info->wifi->bridge);
 980                 connman_technology_tethering_notify(info->technology, FALSE);
 981         }
 982
 983         g_free(info->ifname);
 984         g_free(info);
 985 }
 986
 987 static void ap_create_callback(int result,
 988                                 GSupplicantInterface *interface,
 989                                         void *user_data)
 990 {
 991         struct wifi_tethering_info *info = user_data;
 992
 993         DBG("result %d ifname %s", result,
 994                                 g_supplicant_interface_get_ifname(interface));
 995
 996         if (result < 0) {
 997                 connman_inet_remove_from_bridge(info->wifi->index,
 998                                                         info->wifi->bridge);
 999                 connman_technology_tethering_notify(info->technology, FALSE);
1000
1001                 g_free(info->ifname);
1002                 g_free(info);
1003                 return;
1004         }
1005
1006         info->wifi->interface = interface;
1007         g_supplicant_interface_set_data(interface, info->wifi);
1008
1009         if (g_supplicant_interface_set_apscan(interface, 2) < 0)
1010                 connman_error("Failed to set interface ap_scan property");
1011
1012         g_supplicant_interface_connect(interface, info->ssid,
1013                                                 ap_start_callback, info);
1014 }
1015
1016 static void sta_remove_callback(int result,
1017                                 GSupplicantInterface *interface,
1018                                         void *user_data)
1019 {
1020         struct wifi_tethering_info *info = user_data;
1021         const char *driver = connman_option_get_string("wifi");
1022
1023         DBG("ifname %s result %d ", info->ifname, result);
1024
1025         if (result < 0) {
1026                 info->wifi->tethering = TRUE;
1027
1028                 g_free(info->ifname);
1029                 g_free(info);
1030                 return;
1031         }
1032
1033         info->wifi->interface = NULL;
1034
1035         connman_technology_tethering_notify(info->technology, TRUE);
1036
1037         g_supplicant_interface_create(info->ifname, driver, info->wifi->bridge,
1038                                                 ap_create_callback,
1039                                                         info);
1040 }
1041
1042 static int tech_set_tethering(struct connman_technology *technology,
1043                                 const char *identifier, const char *passphrase,
1044                                 const char *bridge, connman_bool_t enabled)
1045 {
1046         GList *list;
1047         GSupplicantInterface *interface;
1048         struct wifi_data *wifi;
1049         struct wifi_tethering_info *info;
1050         const char *ifname;
1051         unsigned int mode;
1052         int err;
1053
1054         DBG("");
1055
1056         if (enabled == FALSE) {
1057                 for (list = iface_list; list; list = list->next) {
1058                         wifi = list->data;
1059
1060                         if (wifi->tethering == TRUE) {
1061                                 wifi->tethering = FALSE;
1062
1063                                 connman_inet_remove_from_bridge(wifi->index,
1064                                                                         bridge);
1065                                 wifi->bridged = FALSE;
1066                         }
1067                 }
1068
1069                 connman_technology_tethering_notify(technology, FALSE);
1070
1071                 return 0;
1072         }
1073
1074         for (list = iface_list; list; list = list->next) {
1075                 wifi = list->data;
1076
1077                 interface = wifi->interface;
1078
1079                 if (interface == NULL)
1080                         continue;
1081
1082                 ifname = g_supplicant_interface_get_ifname(wifi->interface);
1083
1084                 mode = g_supplicant_interface_get_mode(interface);
1085                 if ((mode & G_SUPPLICANT_CAPABILITY_MODE_AP) == 0) {
1086                         DBG("%s does not support AP mode", ifname);
1087                         continue;
1088                 }
1089
1090                 info = g_try_malloc0(sizeof(struct wifi_tethering_info));
1091                 if (info == NULL)
1092                         return -ENOMEM;
1093
1094                 info->wifi = wifi;
1095                 info->technology = technology;
1096                 info->wifi->bridge = bridge;
1097                 info->ssid = ssid_ap_init(identifier, passphrase);
1098                 if (info->ssid == NULL) {
1099                         g_free(info);
1100                         continue;
1101                 }
1102                 info->ifname = g_strdup(ifname);
1103                 if (info->ifname == NULL) {
1104                         g_free(info);
1105                         continue;
1106                 }
1107
1108                 info->wifi->tethering = TRUE;
1109
1110                 err = g_supplicant_interface_remove(interface,
1111                                                 sta_remove_callback,
1112                                                         info);
1113                 if (err == 0)
1114                         return err;
1115         }
1116
1117         return -EOPNOTSUPP;
1118 }
1119
1120 static void regdom_callback(void *user_data)
1121 {
1122         char *alpha2 = user_data;
1123
1124         DBG("");
1125
1126         if (wifi_technology == NULL)
1127                 return;
1128
1129         connman_technology_regdom_notify(wifi_technology, alpha2);
1130 }
1131
1132 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
1133 {
1134         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
1135 }
1136
1137 static struct connman_technology_driver tech_driver = {
1138         .name           = "wifi",
1139         .type           = CONNMAN_SERVICE_TYPE_WIFI,
1140         .probe          = tech_probe,
1141         .remove         = tech_remove,
1142         .set_tethering  = tech_set_tethering,
1143         .set_regdom     = tech_set_regdom,
1144 };
1145
1146 static int wifi_init(void)
1147 {
1148         int err;
1149
1150         err = connman_network_driver_register(&network_driver);
1151         if (err < 0)
1152                 return err;
1153
1154         err = g_supplicant_register(&callbacks);
1155         if (err < 0) {
1156                 connman_network_driver_unregister(&network_driver);
1157                 return err;
1158         }
1159
1160         err = connman_technology_driver_register(&tech_driver);
1161         if (err < 0) {
1162                 g_supplicant_unregister(&callbacks);
1163                 connman_network_driver_unregister(&network_driver);
1164                 return err;
1165         }
1166
1167         return 0;
1168 }
1169
1170 static void wifi_exit(void)
1171 {
1172         DBG();
1173
1174         connman_technology_driver_unregister(&tech_driver);
1175
1176         g_supplicant_unregister(&callbacks);
1177
1178         connman_network_driver_unregister(&network_driver);
1179 }
1180
1181 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
1182                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)