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