plugins/wifi.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <errno.h>
  29 #include <string.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32 #include <linux/if_arp.h>
  33 #include <linux/wireless.h>
  34 #include <net/ethernet.h>
  35
  36 #ifndef IFF_LOWER_UP
  37 #define IFF_LOWER_UP    0x10000
  38 #endif
  39
  40 #include <dbus/dbus.h>
  41 #include <glib.h>
  42
  43 #define CONNMAN_API_SUBJECT_TO_CHANGE
  44 #include <connman/plugin.h>
  45 #include <connman/inet.h>
  46 #include <connman/device.h>
  47 #include <connman/rtnl.h>
  48 #include <connman/technology.h>
  49 #include <connman/log.h>
  50 #include <connman/option.h>
  51
  52 #include <gsupplicant/gsupplicant.h>
  53
  54 #define CLEANUP_TIMEOUT   8     /* in seconds */
  55 #define INACTIVE_TIMEOUT  12    /* in seconds */
  56
  57 struct connman_technology *wifi_technology = NULL;
  58
  59 struct wifi_data {
  60         char *identifier;
  61         struct connman_device *device;
  62         struct connman_network *network;
  63         struct connman_network *pending_network;
  64         GSList *networks;
  65         GSupplicantInterface *interface;
  66         GSupplicantState state;
  67         connman_bool_t connected;
  68         connman_bool_t disconnecting;
  69         connman_bool_t tethering;
  70         connman_bool_t bridged;
  71         const char *bridge;
  72         int index;
  73         unsigned flags;
  74         unsigned int watch;
  75 };
  76
  77 static GList *iface_list = NULL;
  78
  79 static void handle_tethering(struct wifi_data *wifi)
  80 {
  81         if (wifi->tethering == FALSE)
  82                 return;
  83
  84         if (wifi->bridge == NULL)
  85                 return;
  86
  87         if (wifi->bridged == TRUE)
  88                 return;
  89
  90         DBG("index %d bridge %s", wifi->index, wifi->bridge);
  91
  92         if (connman_inet_add_to_bridge(wifi->index, wifi->bridge) < 0)
  93                 return;
  94
  95         wifi->bridged = TRUE;
  96 }
  97
  98 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
  99 {
 100         struct connman_device *device = user_data;
 101         struct wifi_data *wifi = connman_device_get_data(device);
 102
 103         DBG("index %d flags %d change %d", wifi->index, flags, change);
 104
 105         if (!change)
 106                 return;
 107
 108         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 109                 if (flags & IFF_UP)
 110                         DBG("interface up");
 111                 else
 112                         DBG("interface down");
 113         }
 114
 115         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 116                 if (flags & IFF_LOWER_UP) {
 117                         DBG("carrier on");
 118
 119                         handle_tethering(wifi);
 120                 } else
 121                         DBG("carrier off");
 122         }
 123
 124         wifi->flags = flags;
 125 }
 126
 127 static int wifi_probe(struct connman_device *device)
 128 {
 129         struct wifi_data *wifi;
 130
 131         DBG("device %p", device);
 132
 133         wifi = g_try_new0(struct wifi_data, 1);
 134         if (wifi == NULL)
 135                 return -ENOMEM;
 136
 137         wifi->connected = FALSE;
 138         wifi->disconnecting = FALSE;
 139         wifi->tethering = FALSE;
 140         wifi->bridged = FALSE;
 141         wifi->bridge = NULL;
 142         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 143
 144         connman_device_set_data(device, wifi);
 145         wifi->device = connman_device_ref(device);
 146
 147         wifi->index = connman_device_get_index(device);
 148         wifi->flags = 0;
 149
 150         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 151                                                         wifi_newlink, device);
 152
 153         iface_list = g_list_append(iface_list, wifi);
 154
 155         return 0;
 156 }
 157
 158 static void remove_networks(struct connman_device *device,
 159                                 struct wifi_data *wifi)
 160 {
 161         GSList *list;
 162
 163         for (list = wifi->networks; list != NULL; list = list->next) {
 164                 struct connman_network *network = list->data;
 165
 166                 connman_device_remove_network(device, network);
 167                 connman_network_unref(network);
 168         }
 169
 170         g_slist_free(wifi->networks);
 171         wifi->networks = NULL;
 172 }
 173
 174 static void wifi_remove(struct connman_device *device)
 175 {
 176         struct wifi_data *wifi = connman_device_get_data(device);
 177
 178         DBG("device %p", device);
 179
 180         if (wifi == NULL)
 181                 return;
 182
 183         iface_list = g_list_remove(iface_list, wifi);
 184
 185         remove_networks(device, wifi);
 186
 187         connman_device_set_data(device, NULL);
 188         connman_device_unref(wifi->device);
 189         connman_rtnl_remove_watch(wifi->watch);
 190
 191         g_supplicant_interface_set_data(wifi->interface, NULL);
 192
 193         g_free(wifi->identifier);
 194         g_free(wifi);
 195 }
 196
 197 static void interface_create_callback(int result,
 198                                         GSupplicantInterface *interface,
 199                                                         void *user_data)
 200 {
 201         struct wifi_data *wifi = user_data;
 202
 203         DBG("result %d ifname %s, wifi %p", result,
 204                                 g_supplicant_interface_get_ifname(interface),
 205                                 wifi);
 206
 207         if (result < 0 || wifi == NULL)
 208                 return;
 209
 210         wifi->interface = interface;
 211         g_supplicant_interface_set_data(interface, wifi);
 212 }
 213
 214 static void interface_remove_callback(int result,
 215                                         GSupplicantInterface *interface,
 216                                                         void *user_data)
 217 {
 218         struct wifi_data *wifi = user_data;
 219
 220         DBG("result %d wifi %p", result, wifi);
 221
 222         if (result < 0 || wifi == NULL)
 223                 return;
 224
 225         wifi->interface = NULL;
 226 }
 227
 228
 229 static int wifi_enable(struct connman_device *device)
 230 {
 231         struct wifi_data *wifi = connman_device_get_data(device);
 232         const char *interface = connman_device_get_string(device, "Interface");
 233         const char *driver = connman_option_get_string("wifi");
 234         int ret;
 235
 236         DBG("device %p %p", device, wifi);
 237
 238         ret = g_supplicant_interface_create(interface, driver, NULL,
 239                                                 interface_create_callback,
 240                                                         wifi);
 241         if (ret < 0)
 242                 return ret;
 243
 244         return -EINPROGRESS;
 245 }
 246
 247 static int wifi_disable(struct connman_device *device)
 248 {
 249         struct wifi_data *wifi = connman_device_get_data(device);
 250         int ret;
 251
 252         DBG("device %p", device);
 253
 254         wifi->connected = FALSE;
 255         wifi->disconnecting = FALSE;
 256
 257         if (wifi->pending_network != NULL)
 258                 wifi->pending_network = NULL;
 259
 260         remove_networks(device, wifi);
 261
 262         ret = g_supplicant_interface_remove(wifi->interface,
 263                                                 interface_remove_callback,
 264                                                         wifi);
 265         if (ret < 0)
 266                 return ret;
 267
 268         return -EINPROGRESS;
 269 }
 270
 271 static void scan_callback(int result, GSupplicantInterface *interface,
 272                                                 void *user_data)
 273 {
 274         struct connman_device *device = user_data;
 275
 276         DBG("result %d", result);
 277
 278         if (result < 0)
 279                 connman_device_reset_scanning(device);
 280         else
 281                 connman_device_set_scanning(device, FALSE);
 282         connman_device_unref(device);
 283 }
 284
 285 static int wifi_scan(struct connman_device *device)
 286 {
 287         struct wifi_data *wifi = connman_device_get_data(device);
 288         int ret;
 289
 290         DBG("device %p %p", device, wifi->interface);
 291
 292         if (wifi->tethering == TRUE)
 293                 return 0;
 294
 295         connman_device_ref(device);
 296         ret = g_supplicant_interface_scan(wifi->interface, scan_callback,
 297                                                                 device);
 298         if (ret == 0)
 299                 connman_device_set_scanning(device, TRUE);
 300         else
 301                 connman_device_unref(device);
 302
 303         return ret;
 304 }
 305
 306 static struct connman_device_driver wifi_ng_driver = {
 307         .name           = "wifi",
 308         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 309         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 310         .probe          = wifi_probe,
 311         .remove         = wifi_remove,
 312         .enable         = wifi_enable,
 313         .disable        = wifi_disable,
 314         .scan           = wifi_scan,
 315 };
 316
 317 static void system_ready(void)
 318 {
 319         DBG("");
 320
 321         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 322                 connman_error("Failed to register WiFi driver");
 323 }
 324
 325 static void system_killed(void)
 326 {
 327         DBG("");
 328
 329         connman_device_driver_unregister(&wifi_ng_driver);
 330 }
 331
 332 static int network_probe(struct connman_network *network)
 333 {
 334         DBG("network %p", network);
 335
 336         return 0;
 337 }
 338
 339 static void network_remove(struct connman_network *network)
 340 {
 341         struct connman_device *device = connman_network_get_device(network);
 342         struct wifi_data *wifi;
 343
 344         DBG("network %p", network);
 345
 346         wifi = connman_device_get_data(device);
 347         if (wifi == NULL)
 348                 return;
 349
 350         if (wifi->network != network)
 351                 return;
 352
 353         wifi->network = NULL;
 354 }
 355
 356 static void connect_callback(int result, GSupplicantInterface *interface,
 357                                                         void *user_data)
 358 {
 359         struct connman_network *network = user_data;
 360
 361         DBG("network %p result %d", network, result);
 362
 363         if (result == -ENOKEY) {
 364                 connman_network_set_error(network,
 365                                         CONNMAN_NETWORK_ERROR_INVALID_KEY);
 366         } else if (result < 0) {
 367                 connman_network_set_error(network,
 368                                         CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
 369         }
 370 }
 371
 372 static GSupplicantSecurity network_security(const char *security)
 373 {
 374         if (g_str_equal(security, "none") == TRUE)
 375                 return G_SUPPLICANT_SECURITY_NONE;
 376         else if (g_str_equal(security, "wep") == TRUE)
 377                 return G_SUPPLICANT_SECURITY_WEP;
 378         else if (g_str_equal(security, "psk") == TRUE)
 379                 return G_SUPPLICANT_SECURITY_PSK;
 380         else if (g_str_equal(security, "wpa") == TRUE)
 381                 return G_SUPPLICANT_SECURITY_PSK;
 382         else if (g_str_equal(security, "rsn") == TRUE)
 383                 return G_SUPPLICANT_SECURITY_PSK;
 384         else if (g_str_equal(security, "ieee8021x") == TRUE)
 385                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 386
 387         return G_SUPPLICANT_SECURITY_UNKNOWN;
 388 }
 389
 390 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 391 {
 392         const char *security, *passphrase, *agent_passphrase;
 393
 394         memset(ssid, 0, sizeof(*ssid));
 395         ssid->mode = G_SUPPLICANT_MODE_INFRA;
 396         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 397                                                 &ssid->ssid_len);
 398         ssid->scan_ssid = 1;
 399         security = connman_network_get_string(network, "WiFi.Security");
 400         ssid->security = network_security(security);
 401         passphrase = connman_network_get_string(network,
 402                                                 "WiFi.Passphrase");
 403         if (passphrase == NULL || strlen(passphrase) == 0) {
 404
 405                 /* Use agent provided passphrase as a fallback */
 406                 agent_passphrase = connman_network_get_string(network,
 407                                                 "WiFi.AgentPassphrase");
 408
 409                 if (agent_passphrase == NULL || strlen(agent_passphrase) == 0)
 410                         ssid->passphrase = NULL;
 411                 else
 412                         ssid->passphrase = agent_passphrase;
 413         } else
 414                 ssid->passphrase = passphrase;
 415
 416         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 417
 418         /*
 419          * If our private key password is unset,
 420          * we use the supplied passphrase. That is needed
 421          * for PEAP where 2 passphrases (identity and client
 422          * cert may have to be provided.
 423          */
 424         if (connman_network_get_string(network,
 425                                         "WiFi.PrivateKeyPassphrase") == NULL)
 426                 connman_network_set_string(network,
 427                                                 "WiFi.PrivateKeyPassphrase",
 428                                                 ssid->passphrase);
 429         /* We must have an identity for both PEAP and TLS */
 430         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 431
 432         /* Use agent provided identity as a fallback */
 433         if (ssid->identity == NULL || strlen(ssid->identity) == 0)
 434                 ssid->identity = connman_network_get_string(network,
 435                                                         "WiFi.AgentIdentity");
 436
 437         ssid->ca_cert_path = connman_network_get_string(network,
 438                                                         "WiFi.CACertFile");
 439         ssid->client_cert_path = connman_network_get_string(network,
 440                                                         "WiFi.ClientCertFile");
 441         ssid->private_key_path = connman_network_get_string(network,
 442                                                         "WiFi.PrivateKeyFile");
 443         ssid->private_key_passphrase = connman_network_get_string(network,
 444                                                 "WiFi.PrivateKeyPassphrase");
 445         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 446
 447         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
 448         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
 449
 450 }
 451
 452 static int network_connect(struct connman_network *network)
 453 {
 454         struct connman_device *device = connman_network_get_device(network);
 455         struct wifi_data *wifi;
 456         GSupplicantInterface *interface;
 457         GSupplicantSSID *ssid;
 458
 459         DBG("network %p", network);
 460
 461         if (device == NULL)
 462                 return -ENODEV;
 463
 464         wifi = connman_device_get_data(device);
 465         if (wifi == NULL)
 466                 return -ENODEV;
 467
 468         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
 469         if (ssid == NULL)
 470                 return -ENOMEM;
 471
 472         interface = wifi->interface;
 473
 474         ssid_init(ssid, network);
 475
 476         if (wifi->disconnecting == TRUE)
 477                 wifi->pending_network = network;
 478         else {
 479                 wifi->network = network;
 480
 481                 return g_supplicant_interface_connect(interface, ssid,
 482                                                 connect_callback, network);
 483         }
 484
 485         return -EINPROGRESS;
 486 }
 487
 488 static void disconnect_callback(int result, GSupplicantInterface *interface,
 489                                                                 void *user_data)
 490 {
 491         struct wifi_data *wifi = user_data;
 492
 493         if (wifi->network != NULL) {
 494                 /*
 495                  * if result < 0 supplican return an error because
 496                  * the network is not current.
 497                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 498                  * failed, call connman_network_set_connected to report
 499                  * disconnect is completed.
 500                  */
 501                 if (result < 0)
 502                         connman_network_set_connected(wifi->network, FALSE);
 503         }
 504
 505         wifi->network = NULL;
 506
 507         wifi->disconnecting = FALSE;
 508
 509         if (wifi->pending_network != NULL) {
 510                 network_connect(wifi->pending_network);
 511                 wifi->pending_network = NULL;
 512         }
 513
 514 }
 515
 516 static int network_disconnect(struct connman_network *network)
 517 {
 518         struct connman_device *device = connman_network_get_device(network);
 519         struct wifi_data *wifi;
 520         int err;
 521
 522         DBG("network %p", network);
 523
 524         wifi = connman_device_get_data(device);
 525         if (wifi == NULL || wifi->interface == NULL)
 526                 return -ENODEV;
 527
 528         connman_network_set_associating(network, FALSE);
 529
 530         if (wifi->disconnecting == TRUE)
 531                 return -EALREADY;
 532
 533         wifi->disconnecting = TRUE;
 534
 535         err = g_supplicant_interface_disconnect(wifi->interface,
 536                                                 disconnect_callback, wifi);
 537         if (err < 0)
 538                 wifi->disconnecting = FALSE;
 539
 540         return err;
 541 }
 542
 543 static struct connman_network_driver network_driver = {
 544         .name           = "wifi",
 545         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 546         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 547         .probe          = network_probe,
 548         .remove         = network_remove,
 549         .connect        = network_connect,
 550         .disconnect     = network_disconnect,
 551 };
 552
 553 static void interface_added(GSupplicantInterface *interface)
 554 {
 555         const char *ifname = g_supplicant_interface_get_ifname(interface);
 556         const char *driver = g_supplicant_interface_get_driver(interface);
 557         struct wifi_data *wifi;
 558
 559         wifi = g_supplicant_interface_get_data(interface);
 560
 561         /*
 562          * We can get here with a NULL wifi pointer when
 563          * the interface added signal is sent before the
 564          * interface creation callback is called.
 565          */
 566         if (wifi == NULL)
 567                 return;
 568
 569         DBG("ifname %s driver %s wifi %p tethering %d",
 570                         ifname, driver, wifi, wifi->tethering);
 571
 572         if (wifi->device == NULL) {
 573                 connman_error("WiFi device not set");
 574                 return;
 575         }
 576
 577         connman_device_set_powered(wifi->device, TRUE);
 578
 579         if (wifi->tethering == TRUE)
 580                 return;
 581
 582         wifi_scan(wifi->device);
 583 }
 584
 585 static connman_bool_t is_idle(struct wifi_data *wifi)
 586 {
 587         DBG("state %d", wifi->state);
 588
 589         switch (wifi->state) {
 590         case G_SUPPLICANT_STATE_UNKNOWN:
 591         case G_SUPPLICANT_STATE_DISCONNECTED:
 592         case G_SUPPLICANT_STATE_INACTIVE:
 593         case G_SUPPLICANT_STATE_SCANNING:
 594                 return TRUE;
 595
 596         case G_SUPPLICANT_STATE_AUTHENTICATING:
 597         case G_SUPPLICANT_STATE_ASSOCIATING:
 598         case G_SUPPLICANT_STATE_ASSOCIATED:
 599         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 600         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 601         case G_SUPPLICANT_STATE_COMPLETED:
 602                 return FALSE;
 603         }
 604
 605         return FALSE;
 606 }
 607
 608 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
 609                                                 struct wifi_data *wifi)
 610 {
 611         /* First, let's check if WPS processing did not went wrong */
 612         if (g_supplicant_interface_get_wps_state(interface) ==
 613                 G_SUPPLICANT_WPS_STATE_FAIL)
 614                 return FALSE;
 615
 616         /* Unlike normal connection, being associated while processing wps
 617          * actually means that we are idling. */
 618         switch (wifi->state) {
 619         case G_SUPPLICANT_STATE_UNKNOWN:
 620         case G_SUPPLICANT_STATE_DISCONNECTED:
 621         case G_SUPPLICANT_STATE_INACTIVE:
 622         case G_SUPPLICANT_STATE_SCANNING:
 623         case G_SUPPLICANT_STATE_ASSOCIATED:
 624                 return TRUE;
 625         case G_SUPPLICANT_STATE_AUTHENTICATING:
 626         case G_SUPPLICANT_STATE_ASSOCIATING:
 627         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 628         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 629         case G_SUPPLICANT_STATE_COMPLETED:
 630                 return FALSE;
 631         }
 632
 633         return FALSE;
 634 }
 635
 636 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
 637                                         struct connman_network *network,
 638                                         struct connman_device *device,
 639                                         struct wifi_data *wifi)
 640 {
 641         connman_bool_t wps;
 642
 643         wps = connman_network_get_bool(network, "WiFi.UseWPS");
 644         if (wps == TRUE) {
 645                 const unsigned char *ssid, *wps_ssid;
 646                 unsigned int ssid_len, wps_ssid_len;
 647                 const char *wps_key;
 648
 649                 /* Checking if we got associated with requested
 650                  * network */
 651                 ssid = connman_network_get_blob(network, "WiFi.SSID",
 652                                                 &ssid_len);
 653
 654                 wps_ssid = g_supplicant_interface_get_wps_ssid(
 655                         interface, &wps_ssid_len);
 656
 657                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
 658                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
 659                         connman_network_set_associating(network, FALSE);
 660                         g_supplicant_interface_disconnect(wifi->interface,
 661                                                 disconnect_callback, wifi);
 662                         return FALSE;
 663                 }
 664
 665                 wps_key = g_supplicant_interface_get_wps_key(interface);
 666                 connman_network_set_string(network, "WiFi.Passphrase",
 667                                         wps_key);
 668
 669                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
 670         }
 671
 672         return TRUE;
 673 }
 674
 675 static void interface_state(GSupplicantInterface *interface)
 676 {
 677         struct connman_network *network;
 678         struct connman_device *device;
 679         struct wifi_data *wifi;
 680         GSupplicantState state = g_supplicant_interface_get_state(interface);
 681         connman_bool_t wps;
 682
 683         wifi = g_supplicant_interface_get_data(interface);
 684
 685         DBG("wifi %p interface state %d", wifi, state);
 686
 687         if (wifi == NULL)
 688                 return;
 689
 690         network = wifi->network;
 691         device = wifi->device;
 692
 693         if (device == NULL || network == NULL)
 694                 return;
 695
 696         switch (state) {
 697         case G_SUPPLICANT_STATE_SCANNING:
 698                 break;
 699
 700         case G_SUPPLICANT_STATE_AUTHENTICATING:
 701         case G_SUPPLICANT_STATE_ASSOCIATING:
 702                 connman_network_set_associating(network, TRUE);
 703                 break;
 704
 705         case G_SUPPLICANT_STATE_COMPLETED:
 706                 if (handle_wps_completion(interface, network, device, wifi) ==
 707                                                                         FALSE)
 708                         break;
 709
 710                 /* reset scan trigger and schedule background scan */
 711                 connman_device_schedule_scan(device);
 712
 713                 connman_network_set_connected(network, TRUE);
 714                 break;
 715
 716         case G_SUPPLICANT_STATE_DISCONNECTED:
 717                 /*
 718                  * If we're in one of the idle modes, we have
 719                  * not started association yet and thus setting
 720                  * those ones to FALSE could cancel an association
 721                  * in progress.
 722                  */
 723                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
 724                 if (wps == TRUE)
 725                         if (is_idle_wps(interface, wifi) == TRUE)
 726                                 break;
 727
 728                 if (is_idle(wifi))
 729                         break;
 730                 connman_network_set_associating(network, FALSE);
 731                 connman_network_set_connected(network, FALSE);
 732                 break;
 733
 734         case G_SUPPLICANT_STATE_INACTIVE:
 735                 connman_network_set_associating(network, FALSE);
 736                 break;
 737
 738         case G_SUPPLICANT_STATE_UNKNOWN:
 739         case G_SUPPLICANT_STATE_ASSOCIATED:
 740         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 741         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 742                 break;
 743         }
 744
 745         wifi->state = state;
 746
 747         DBG("DONE");
 748 }
 749
 750 static void interface_removed(GSupplicantInterface *interface)
 751 {
 752         const char *ifname = g_supplicant_interface_get_ifname(interface);
 753         struct wifi_data *wifi;
 754
 755         DBG("ifname %s", ifname);
 756
 757         wifi = g_supplicant_interface_get_data(interface);
 758
 759         if (wifi != NULL && wifi->tethering == TRUE)
 760                 return;
 761
 762         if (wifi == NULL || wifi->device == NULL) {
 763                 connman_error("Wrong wifi pointer");
 764                 return;
 765         }
 766
 767         connman_device_set_powered(wifi->device, FALSE);
 768 }
 769
 770 static void scan_started(GSupplicantInterface *interface)
 771 {
 772         DBG("");
 773 }
 774
 775 static void scan_finished(GSupplicantInterface *interface)
 776 {
 777         DBG("");
 778 }
 779
 780 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
 781 {
 782         unsigned char strength;
 783
 784         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
 785         if (strength > 100)
 786                 strength = 100;
 787
 788         return strength;
 789 }
 790
 791 static void network_added(GSupplicantNetwork *supplicant_network)
 792 {
 793         struct connman_network *network;
 794         GSupplicantInterface *interface;
 795         struct wifi_data *wifi;
 796         const char *name, *identifier, *security, *group;
 797         const unsigned char *ssid;
 798         unsigned int ssid_len;
 799         connman_bool_t wps;
 800
 801         DBG("");
 802
 803         interface = g_supplicant_network_get_interface(supplicant_network);
 804         wifi = g_supplicant_interface_get_data(interface);
 805         name = g_supplicant_network_get_name(supplicant_network);
 806         identifier = g_supplicant_network_get_identifier(supplicant_network);
 807         security = g_supplicant_network_get_security(supplicant_network);
 808         group = g_supplicant_network_get_identifier(supplicant_network);
 809         wps = g_supplicant_network_get_wps(supplicant_network);
 810
 811         if (wifi == NULL)
 812                 return;
 813
 814         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
 815
 816         network = connman_device_get_network(wifi->device, identifier);
 817
 818         if (network == NULL) {
 819                 network = connman_network_create(identifier,
 820                                                 CONNMAN_NETWORK_TYPE_WIFI);
 821                 if (network == NULL)
 822                         return;
 823
 824                 connman_network_set_index(network, wifi->index);
 825
 826                 if (connman_device_add_network(wifi->device, network) < 0) {
 827                         connman_network_unref(network);
 828                         return;
 829                 }
 830
 831                 wifi->networks = g_slist_append(wifi->networks, network);
 832         }
 833
 834         if (name != NULL && name[0] != '\0')
 835                 connman_network_set_name(network, name);
 836
 837         connman_network_set_blob(network, "WiFi.SSID",
 838                                                 ssid, ssid_len);
 839         connman_network_set_string(network, "WiFi.Security", security);
 840         connman_network_set_strength(network,
 841                                 calculate_strength(supplicant_network));
 842         connman_network_set_bool(network, "WiFi.WPS", wps);
 843
 844         connman_network_set_available(network, TRUE);
 845
 846         if (ssid != NULL)
 847                 connman_network_set_group(network, group);
 848 }
 849
 850 static void network_removed(GSupplicantNetwork *network)
 851 {
 852         GSupplicantInterface *interface;
 853         struct wifi_data *wifi;
 854         const char *name, *identifier;
 855         struct connman_network *connman_network;
 856
 857         interface = g_supplicant_network_get_interface(network);
 858         wifi = g_supplicant_interface_get_data(interface);
 859         identifier = g_supplicant_network_get_identifier(network);
 860         name = g_supplicant_network_get_name(network);
 861
 862         DBG("name %s", name);
 863
 864         if (wifi == NULL)
 865                 return;
 866
 867         connman_network = connman_device_get_network(wifi->device, identifier);
 868         if (connman_network == NULL)
 869                 return;
 870
 871         wifi->networks = g_slist_remove(wifi->networks, connman_network);
 872
 873         connman_device_remove_network(wifi->device, connman_network);
 874         connman_network_unref(connman_network);
 875 }
 876
 877 static void network_changed(GSupplicantNetwork *network, const char *property)
 878 {
 879         GSupplicantInterface *interface;
 880         struct wifi_data *wifi;
 881         const char *name, *identifier;
 882         struct connman_network *connman_network;
 883
 884         interface = g_supplicant_network_get_interface(network);
 885         wifi = g_supplicant_interface_get_data(interface);
 886         identifier = g_supplicant_network_get_identifier(network);
 887         name = g_supplicant_network_get_name(network);
 888
 889         DBG("name %s", name);
 890
 891         if (wifi == NULL)
 892                 return;
 893
 894         connman_network = connman_device_get_network(wifi->device, identifier);
 895         if (connman_network == NULL)
 896                 return;
 897
 898         if (g_str_equal(property, "Signal") == TRUE) {
 899                connman_network_set_strength(connman_network,
 900                                         calculate_strength(network));
 901                connman_network_update(connman_network);
 902         }
 903 }
 904
 905 static void debug(const char *str)
 906 {
 907         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
 908                 connman_debug("%s", str);
 909 }
 910
 911 static const GSupplicantCallbacks callbacks = {
 912         .system_ready           = system_ready,
 913         .system_killed          = system_killed,
 914         .interface_added        = interface_added,
 915         .interface_state        = interface_state,
 916         .interface_removed      = interface_removed,
 917         .scan_started           = scan_started,
 918         .scan_finished          = scan_finished,
 919         .network_added          = network_added,
 920         .network_removed        = network_removed,
 921         .network_changed        = network_changed,
 922         .debug                  = debug,
 923 };
 924
 925
 926 static int tech_probe(struct connman_technology *technology)
 927 {
 928         wifi_technology = technology;
 929
 930         return 0;
 931 }
 932
 933 static void tech_remove(struct connman_technology *technology)
 934 {
 935         wifi_technology = NULL;
 936 }
 937
 938 struct wifi_tethering_info {
 939         struct wifi_data *wifi;
 940         struct connman_technology *technology;
 941         char *ifname;
 942         GSupplicantSSID *ssid;
 943 };
 944
 945 static GSupplicantSSID *ssid_ap_init(const char *ssid, const char *passphrase)
 946 {
 947         GSupplicantSSID *ap;
 948
 949         ap = g_try_malloc0(sizeof(GSupplicantSSID));
 950         if (ap == NULL)
 951                 return NULL;
 952
 953         ap->mode = G_SUPPLICANT_MODE_MASTER;
 954         ap->ssid = ssid;
 955         ap->ssid_len = strlen(ssid);
 956         ap->scan_ssid = 0;
 957         ap->freq = 2412;
 958
 959         if (passphrase == NULL || strlen(passphrase) == 0) {
 960                 ap->security = G_SUPPLICANT_SECURITY_NONE;
 961                 ap->passphrase = NULL;
 962         } else {
 963                ap->security = G_SUPPLICANT_SECURITY_PSK;
 964                ap->protocol = G_SUPPLICANT_PROTO_RSN;
 965                ap->pairwise_cipher = G_SUPPLICANT_PAIRWISE_CCMP;
 966                ap->group_cipher = G_SUPPLICANT_GROUP_CCMP;
 967                ap->passphrase = passphrase;
 968         }
 969
 970         return ap;
 971 }
 972
 973 static void ap_start_callback(int result, GSupplicantInterface *interface,
 974                                                         void *user_data)
 975 {
 976         struct wifi_tethering_info *info = user_data;
 977
 978         DBG("result %d index %d bridge %s",
 979                 result, info->wifi->index, info->wifi->bridge);
 980
 981         if (result < 0) {
 982                 connman_inet_remove_from_bridge(info->wifi->index,
 983                                                         info->wifi->bridge);
 984                 connman_technology_tethering_notify(info->technology, FALSE);
 985         }
 986
 987         g_free(info->ifname);
 988         g_free(info);
 989 }
 990
 991 static void ap_create_callback(int result,
 992                                 GSupplicantInterface *interface,
 993                                         void *user_data)
 994 {
 995         struct wifi_tethering_info *info = user_data;
 996
 997         DBG("result %d ifname %s", result,
 998                                 g_supplicant_interface_get_ifname(interface));
 999
1000         if (result < 0) {
1001                 connman_inet_remove_from_bridge(info->wifi->index,
1002                                                         info->wifi->bridge);
1003                 connman_technology_tethering_notify(info->technology, FALSE);
1004
1005                 g_free(info->ifname);
1006                 g_free(info);
1007                 return;
1008         }
1009
1010         info->wifi->interface = interface;
1011         g_supplicant_interface_set_data(interface, info->wifi);
1012
1013         if (g_supplicant_interface_set_apscan(interface, 2) < 0)
1014                 connman_error("Failed to set interface ap_scan property");
1015
1016         g_supplicant_interface_connect(interface, info->ssid,
1017                                                 ap_start_callback, info);
1018 }
1019
1020 static void sta_remove_callback(int result,
1021                                 GSupplicantInterface *interface,
1022                                         void *user_data)
1023 {
1024         struct wifi_tethering_info *info = user_data;
1025         const char *driver = connman_option_get_string("wifi");
1026
1027         DBG("ifname %s result %d ", info->ifname, result);
1028
1029         if (result < 0) {
1030                 info->wifi->tethering = TRUE;
1031
1032                 g_free(info->ifname);
1033                 g_free(info);
1034                 return;
1035         }
1036
1037         info->wifi->interface = NULL;
1038
1039         connman_technology_tethering_notify(info->technology, TRUE);
1040
1041         g_supplicant_interface_create(info->ifname, driver, info->wifi->bridge,
1042                                                 ap_create_callback,
1043                                                         info);
1044 }
1045
1046 static int tech_set_tethering(struct connman_technology *technology,
1047                                 const char *identifier, const char *passphrase,
1048                                 const char *bridge, connman_bool_t enabled)
1049 {
1050         GList *list;
1051         GSupplicantInterface *interface;
1052         struct wifi_data *wifi;
1053         struct wifi_tethering_info *info;
1054         const char *ifname;
1055         unsigned int mode;
1056         int err;
1057
1058         DBG("");
1059
1060         if (enabled == FALSE) {
1061                 for (list = iface_list; list; list = list->next) {
1062                         wifi = list->data;
1063
1064                         if (wifi->tethering == TRUE) {
1065                                 wifi->tethering = FALSE;
1066
1067                                 connman_inet_remove_from_bridge(wifi->index,
1068                                                                         bridge);
1069                                 wifi->bridged = FALSE;
1070                         }
1071                 }
1072
1073                 connman_technology_tethering_notify(technology, FALSE);
1074
1075                 return 0;
1076         }
1077
1078         for (list = iface_list; list; list = list->next) {
1079                 wifi = list->data;
1080
1081                 interface = wifi->interface;
1082
1083                 if (interface == NULL)
1084                         continue;
1085
1086                 ifname = g_supplicant_interface_get_ifname(wifi->interface);
1087
1088                 mode = g_supplicant_interface_get_mode(interface);
1089                 if ((mode & G_SUPPLICANT_CAPABILITY_MODE_AP) == 0) {
1090                         DBG("%s does not support AP mode", ifname);
1091                         continue;
1092                 }
1093
1094                 info = g_try_malloc0(sizeof(struct wifi_tethering_info));
1095                 if (info == NULL)
1096                         return -ENOMEM;
1097
1098                 info->wifi = wifi;
1099                 info->technology = technology;
1100                 info->wifi->bridge = bridge;
1101                 info->ssid = ssid_ap_init(identifier, passphrase);
1102                 if (info->ssid == NULL) {
1103                         g_free(info);
1104                         continue;
1105                 }
1106                 info->ifname = g_strdup(ifname);
1107                 if (info->ifname == NULL) {
1108                         g_free(info);
1109                         continue;
1110                 }
1111
1112                 info->wifi->tethering = TRUE;
1113
1114                 err = g_supplicant_interface_remove(interface,
1115                                                 sta_remove_callback,
1116                                                         info);
1117                 if (err == 0)
1118                         return err;
1119         }
1120
1121         return -EOPNOTSUPP;
1122 }
1123
1124 static void regdom_callback(void *user_data)
1125 {
1126         char *alpha2 = user_data;
1127
1128         DBG("");
1129
1130         if (wifi_technology == NULL)
1131                 return;
1132
1133         connman_technology_regdom_notify(wifi_technology, alpha2);
1134 }
1135
1136 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
1137 {
1138         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
1139 }
1140
1141 static struct connman_technology_driver tech_driver = {
1142         .name           = "wifi",
1143         .type           = CONNMAN_SERVICE_TYPE_WIFI,
1144         .probe          = tech_probe,
1145         .remove         = tech_remove,
1146         .set_tethering  = tech_set_tethering,
1147         .set_regdom     = tech_set_regdom,
1148 };
1149
1150 static int wifi_init(void)
1151 {
1152         int err;
1153
1154         err = connman_network_driver_register(&network_driver);
1155         if (err < 0)
1156                 return err;
1157
1158         err = g_supplicant_register(&callbacks);
1159         if (err < 0) {
1160                 connman_network_driver_unregister(&network_driver);
1161                 return err;
1162         }
1163
1164         err = connman_technology_driver_register(&tech_driver);
1165         if (err < 0) {
1166                 g_supplicant_unregister(&callbacks);
1167                 connman_network_driver_unregister(&network_driver);
1168                 return err;
1169         }
1170
1171         return 0;
1172 }
1173
1174 static void wifi_exit(void)
1175 {
1176         DBG();
1177
1178         connman_technology_driver_unregister(&tech_driver);
1179
1180         g_supplicant_unregister(&callbacks);
1181
1182         connman_network_driver_unregister(&network_driver);
1183 }
1184
1185 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
1186                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)