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