plugins/wifi.c

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