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