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         int index;
  69         unsigned flags;
  70         unsigned int watch;
  71 };
  72
  73 static int get_bssid(struct connman_device *device,
  74                                 unsigned char *bssid, unsigned int *bssid_len)
  75 {
  76         struct iwreq wrq;
  77         char *ifname;
  78         int ifindex;
  79         int fd, err;
  80
  81         ifindex = connman_device_get_index(device);
  82         if (ifindex < 0)
  83                 return -EINVAL;
  84
  85         ifname = connman_inet_ifname(ifindex);
  86         if (ifname == NULL)
  87                 return -EINVAL;
  88
  89         fd = socket(PF_INET, SOCK_DGRAM, 0);
  90         if (fd < 0) {
  91                 g_free(ifname);
  92                 return -EINVAL;
  93         }
  94
  95         memset(&wrq, 0, sizeof(wrq));
  96         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
  97
  98         err = ioctl(fd, SIOCGIWAP, &wrq);
  99
 100         g_free(ifname);
 101         close(fd);
 102
 103         if (err < 0)
 104                 return -EIO;
 105
 106         memcpy(bssid, wrq.u.ap_addr.sa_data, ETH_ALEN);
 107         *bssid_len = ETH_ALEN;
 108
 109         return 0;
 110 }
 111
 112 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
 113 {
 114         struct connman_device *device = user_data;
 115         struct wifi_data *wifi = connman_device_get_data(device);
 116
 117         DBG("index %d flags %d change %d", wifi->index, flags, change);
 118
 119         if (!change)
 120                 return;
 121
 122         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 123                 if (flags & IFF_UP)
 124                         DBG("interface up");
 125                 else
 126                         DBG("interface down");
 127         }
 128
 129         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 130                 if (flags & IFF_LOWER_UP)
 131                         DBG("carrier on");
 132                 else
 133                         DBG("carrier off");
 134         }
 135
 136         wifi->flags = flags;
 137 }
 138
 139 static int wifi_probe(struct connman_device *device)
 140 {
 141         struct wifi_data *wifi;
 142
 143         DBG("device %p", device);
 144
 145         wifi = g_try_new0(struct wifi_data, 1);
 146         if (wifi == NULL)
 147                 return -ENOMEM;
 148
 149         wifi->connected = FALSE;
 150         wifi->disconnecting = FALSE;
 151         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 152
 153         connman_device_set_data(device, wifi);
 154         wifi->device = connman_device_ref(device);
 155
 156         wifi->index = connman_device_get_index(device);
 157         wifi->flags = 0;
 158
 159         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 160                                                         wifi_newlink, device);
 161
 162         return 0;
 163 }
 164
 165 static void wifi_remove(struct connman_device *device)
 166 {
 167         struct wifi_data *wifi = connman_device_get_data(device);
 168
 169         DBG("device %p", device);
 170
 171         if (wifi->pending_network != NULL) {
 172                 connman_network_unref(wifi->pending_network);
 173                 wifi->pending_network = NULL;
 174         }
 175
 176         connman_device_set_data(device, NULL);
 177         connman_device_unref(wifi->device);
 178         connman_rtnl_remove_watch(wifi->watch);
 179
 180         g_supplicant_interface_set_data(wifi->interface, NULL);
 181
 182         g_free(wifi->identifier);
 183         g_free(wifi);
 184 }
 185
 186 static void interface_create_callback(int result,
 187                                         GSupplicantInterface *interface,
 188                                                         void *user_data)
 189 {
 190         struct wifi_data *wifi = user_data;
 191
 192         DBG("result %d ifname %s", result,
 193                                 g_supplicant_interface_get_ifname(interface));
 194
 195         if (result < 0)
 196                 return;
 197
 198         wifi->interface = interface;
 199         g_supplicant_interface_set_data(interface, wifi);
 200 }
 201
 202 static void interface_remove_callback(int result,
 203                                         GSupplicantInterface *interface,
 204                                                         void *user_data)
 205 {
 206         struct wifi_data *wifi = user_data;
 207
 208         DBG("result %d", result);
 209
 210         if (result < 0)
 211                 return;
 212
 213         wifi->interface = NULL;
 214 }
 215
 216
 217 static int wifi_enable(struct connman_device *device)
 218 {
 219         struct wifi_data *wifi = connman_device_get_data(device);
 220         const char *interface = connman_device_get_string(device, "Interface");
 221         const char *driver = connman_option_get_string("wifi");
 222
 223         DBG("device %p %p", device, wifi);
 224
 225         return g_supplicant_interface_create(interface, driver,
 226                                                 interface_create_callback,
 227                                                         wifi);
 228 }
 229
 230 static int wifi_disable(struct connman_device *device)
 231 {
 232         struct wifi_data *wifi = connman_device_get_data(device);
 233
 234         DBG("device %p", device);
 235
 236         wifi->connected = FALSE;
 237         wifi->disconnecting = FALSE;
 238
 239         if (wifi->pending_network != NULL) {
 240                 connman_network_unref(wifi->pending_network);
 241                 wifi->pending_network = NULL;
 242         }
 243
 244         return g_supplicant_interface_remove(wifi->interface,
 245                                                 interface_remove_callback,
 246                                                         wifi);
 247 }
 248
 249 static void scan_callback(int result, GSupplicantInterface *interface,
 250                                                 void *user_data)
 251 {
 252         struct connman_device *device = user_data;
 253
 254         DBG("result %d", result);
 255
 256         if (result < 0)
 257                 connman_device_reset_scanning(device);
 258         else
 259                 connman_device_set_scanning(device, FALSE);
 260 }
 261
 262 static int wifi_scan(struct connman_device *device)
 263 {
 264         struct wifi_data *wifi = connman_device_get_data(device);
 265         int ret;
 266
 267         DBG("device %p %p", device, wifi->interface);
 268
 269         ret = g_supplicant_interface_scan(wifi->interface, scan_callback,
 270                                                                 device);
 271         if (ret == 0)
 272                 connman_device_set_scanning(device, TRUE);
 273
 274         return ret;
 275 }
 276
 277 static struct connman_device_driver wifi_ng_driver = {
 278         .name           = "wifi",
 279         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 280         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
 281         .probe          = wifi_probe,
 282         .remove         = wifi_remove,
 283         .enable         = wifi_enable,
 284         .disable        = wifi_disable,
 285         .scan           = wifi_scan,
 286 };
 287
 288 static void system_ready(void)
 289 {
 290         DBG("");
 291
 292         if (connman_device_driver_register(&wifi_ng_driver) < 0)
 293                 connman_error("Failed to register WiFi driver");
 294 }
 295
 296 static void system_killed(void)
 297 {
 298         DBG("");
 299
 300         connman_device_driver_unregister(&wifi_ng_driver);
 301 }
 302
 303 static int network_probe(struct connman_network *network)
 304 {
 305         DBG("network %p", network);
 306
 307         return 0;
 308 }
 309
 310 static void network_remove(struct connman_network *network)
 311 {
 312         DBG("network %p", network);
 313 }
 314
 315 static void connect_callback(int result, GSupplicantInterface *interface,
 316                                                         void *user_data)
 317 {
 318         connman_error("%s", __func__);
 319 }
 320
 321 static GSupplicantSecurity network_security(const char *security)
 322 {
 323         if (g_str_equal(security, "none") == TRUE)
 324                 return G_SUPPLICANT_SECURITY_NONE;
 325         else if (g_str_equal(security, "wep") == TRUE)
 326                 return G_SUPPLICANT_SECURITY_WEP;
 327         else if (g_str_equal(security, "psk") == TRUE)
 328                 return G_SUPPLICANT_SECURITY_PSK;
 329         else if (g_str_equal(security, "wpa") == TRUE)
 330                 return G_SUPPLICANT_SECURITY_PSK;
 331         else if (g_str_equal(security, "rsn") == TRUE)
 332                 return G_SUPPLICANT_SECURITY_PSK;
 333         else if (g_str_equal(security, "ieee8021x") == TRUE)
 334                 return G_SUPPLICANT_SECURITY_IEEE8021X;
 335
 336         return G_SUPPLICANT_SECURITY_UNKNOWN;
 337 }
 338
 339 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
 340 {
 341         const char *security, *passphrase;
 342
 343         memset(ssid, 0, sizeof(*ssid));
 344         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
 345                                                 &ssid->ssid_len);
 346         security = connman_network_get_string(network, "WiFi.Security");
 347         ssid->security = network_security(security);
 348         passphrase = connman_network_get_string(network,
 349                                                 "WiFi.Passphrase");
 350         if (passphrase == NULL || strlen(passphrase) == 0)
 351                 ssid->passphrase = NULL;
 352         else
 353                 ssid->passphrase = passphrase;
 354
 355         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
 356
 357         /*
 358          * If our private key password is unset,
 359          * we use the supplied passphrase. That is needed
 360          * for PEAP where 2 passphrases (identity and client
 361          * cert may have to be provided.
 362          */
 363         if (connman_network_get_string(network,
 364                                         "WiFi.PrivateKeyPassphrase") == NULL)
 365                 connman_network_set_string(network,
 366                                                 "WiFi.PrivateKeyPassphrase",
 367                                                 ssid->passphrase);
 368         /* We must have an identity for both PEAP and TLS */
 369         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
 370         ssid->ca_cert_path = connman_network_get_string(network,
 371                                                         "WiFi.CACertFile");
 372         ssid->client_cert_path = connman_network_get_string(network,
 373                                                         "WiFi.ClientCertFile");
 374         ssid->private_key_path = connman_network_get_string(network,
 375                                                         "WiFi.PrivateKeyFile");
 376         ssid->private_key_passphrase = connman_network_get_string(network,
 377                                                 "WiFi.PrivateKeyPassphrase");
 378         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
 379
 380         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
 381         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
 382
 383 }
 384
 385 static int network_connect(struct connman_network *network)
 386 {
 387         struct connman_device *device = connman_network_get_device(network);
 388         struct wifi_data *wifi;
 389         GSupplicantInterface *interface;
 390         GSupplicantSSID *ssid;
 391
 392         DBG("network %p", network);
 393
 394         if (device == NULL)
 395                 return -ENODEV;
 396
 397         wifi = connman_device_get_data(device);
 398         if (wifi == NULL)
 399                 return -ENODEV;
 400
 401         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
 402         if (ssid == NULL)
 403                 return -ENOMEM;
 404
 405         interface = wifi->interface;
 406
 407         ssid_init(ssid, network);
 408
 409         if (wifi->disconnecting == TRUE)
 410                 wifi->pending_network = connman_network_ref(network);
 411         else {
 412                 wifi->network = connman_network_ref(network);
 413
 414                 return g_supplicant_interface_connect(interface, ssid,
 415                                                 connect_callback, NULL);
 416         }
 417
 418         return -EINPROGRESS;
 419 }
 420
 421 static void disconnect_callback(int result, GSupplicantInterface *interface,
 422                                                                 void *user_data)
 423 {
 424         struct wifi_data *wifi = user_data;
 425
 426         if (wifi->network != NULL) {
 427                 /*
 428                  * if result < 0 supplican return an error because
 429                  * the network is not current.
 430                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
 431                  * failed, call connman_network_set_connected to report
 432                  * disconnect is completed.
 433                  */
 434                 if (result < 0)
 435                         connman_network_set_connected(wifi->network, FALSE);
 436
 437                 connman_network_unref(wifi->network);
 438         }
 439
 440         wifi->network = NULL;
 441
 442         wifi->disconnecting = FALSE;
 443
 444         if (wifi->pending_network != NULL) {
 445                 network_connect(wifi->pending_network);
 446                 connman_network_unref(wifi->pending_network);
 447                 wifi->pending_network = NULL;
 448         }
 449
 450 }
 451
 452 static int network_disconnect(struct connman_network *network)
 453 {
 454         struct connman_device *device = connman_network_get_device(network);
 455         struct wifi_data *wifi;
 456         int err;
 457
 458         DBG("network %p", network);
 459
 460         wifi = connman_device_get_data(device);
 461         if (wifi == NULL || wifi->interface == NULL)
 462                 return -ENODEV;
 463
 464         connman_network_set_associating(network, FALSE);
 465
 466         if (wifi->disconnecting == TRUE)
 467                 return -EALREADY;
 468
 469         wifi->disconnecting = TRUE;
 470
 471         err = g_supplicant_interface_disconnect(wifi->interface,
 472                                                 disconnect_callback, wifi);
 473         if (err < 0)
 474                 wifi->disconnecting = FALSE;
 475
 476         return err;
 477 }
 478
 479 static struct connman_network_driver network_driver = {
 480         .name           = "wifi",
 481         .type           = CONNMAN_NETWORK_TYPE_WIFI,
 482         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
 483         .probe          = network_probe,
 484         .remove         = network_remove,
 485         .connect        = network_connect,
 486         .disconnect     = network_disconnect,
 487 };
 488
 489 static void interface_added(GSupplicantInterface *interface)
 490 {
 491         const char *ifname = g_supplicant_interface_get_ifname(interface);
 492         const char *driver = g_supplicant_interface_get_driver(interface);
 493         struct wifi_data *wifi;
 494
 495         wifi = g_supplicant_interface_get_data(interface);
 496
 497         /*
 498          * We can get here with a NULL wifi pointer when
 499          * the interface added signal is sent before the
 500          * interface creation callback is called.
 501          */
 502         if (wifi == NULL)
 503                 return;
 504
 505         DBG("ifname %s driver %s wifi %p", ifname, driver, wifi);
 506
 507         if (wifi->device == NULL) {
 508                 connman_error("WiFi device not set");
 509                 return;
 510         }
 511
 512         connman_device_set_powered(wifi->device, TRUE);
 513         wifi_scan(wifi->device);
 514 }
 515
 516 static connman_bool_t is_idle(struct wifi_data *wifi)
 517 {
 518         DBG("state %d", wifi->state);
 519
 520         switch (wifi->state) {
 521         case G_SUPPLICANT_STATE_UNKNOWN:
 522         case G_SUPPLICANT_STATE_DISCONNECTED:
 523         case G_SUPPLICANT_STATE_INACTIVE:
 524         case G_SUPPLICANT_STATE_SCANNING:
 525                 return TRUE;
 526
 527         case G_SUPPLICANT_STATE_AUTHENTICATING:
 528         case G_SUPPLICANT_STATE_ASSOCIATING:
 529         case G_SUPPLICANT_STATE_ASSOCIATED:
 530         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 531         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 532         case G_SUPPLICANT_STATE_COMPLETED:
 533                 return FALSE;
 534         }
 535
 536         return FALSE;
 537 }
 538
 539 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
 540                                                 struct wifi_data *wifi)
 541 {
 542         /* First, let's check if WPS processing did not went wrong */
 543         if (g_supplicant_interface_get_wps_state(interface) ==
 544                 G_SUPPLICANT_WPS_STATE_FAIL)
 545                 return FALSE;
 546
 547         /* Unlike normal connection, being associated while processing wps
 548          * actually means that we are idling. */
 549         switch (wifi->state) {
 550         case G_SUPPLICANT_STATE_UNKNOWN:
 551         case G_SUPPLICANT_STATE_DISCONNECTED:
 552         case G_SUPPLICANT_STATE_INACTIVE:
 553         case G_SUPPLICANT_STATE_SCANNING:
 554         case G_SUPPLICANT_STATE_ASSOCIATED:
 555                 return TRUE;
 556         case G_SUPPLICANT_STATE_AUTHENTICATING:
 557         case G_SUPPLICANT_STATE_ASSOCIATING:
 558         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 559         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 560         case G_SUPPLICANT_STATE_COMPLETED:
 561                 return FALSE;
 562         }
 563
 564         return FALSE;
 565 }
 566
 567 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
 568                                         struct connman_network *network,
 569                                         struct connman_device *device,
 570                                         struct wifi_data *wifi)
 571 {
 572         connman_bool_t wps;
 573
 574         wps = connman_network_get_bool(network, "WiFi.UseWPS");
 575         if (wps == TRUE) {
 576                 const unsigned char *ssid, *wps_ssid;
 577                 unsigned int ssid_len, wps_ssid_len;
 578                 const char *wps_key;
 579
 580                 /* Checking if we got associated with requested
 581                  * network */
 582                 ssid = connman_network_get_blob(network, "WiFi.SSID",
 583                                                 &ssid_len);
 584
 585                 wps_ssid = g_supplicant_interface_get_wps_ssid(
 586                         interface, &wps_ssid_len);
 587
 588                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
 589                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
 590                         connman_network_set_associating(network, FALSE);
 591                         g_supplicant_interface_disconnect(wifi->interface,
 592                                                 disconnect_callback, wifi);
 593                         return FALSE;
 594                 }
 595
 596                 wps_key = g_supplicant_interface_get_wps_key(interface);
 597                 connman_network_set_string(network, "WiFi.Passphrase",
 598                                         wps_key);
 599
 600                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
 601         }
 602
 603         return TRUE;
 604 }
 605
 606 static void interface_state(GSupplicantInterface *interface)
 607 {
 608         struct connman_network *network;
 609         struct connman_device *device;
 610         struct wifi_data *wifi;
 611         GSupplicantState state = g_supplicant_interface_get_state(interface);
 612         unsigned char bssid[ETH_ALEN];
 613         unsigned int bssid_len;
 614         connman_bool_t wps;
 615
 616         wifi = g_supplicant_interface_get_data(interface);
 617
 618         DBG("wifi %p interface state %d", wifi, state);
 619
 620         if (wifi == NULL)
 621                 return;
 622
 623         network = wifi->network;
 624         device = wifi->device;
 625
 626         if (device == NULL || network == NULL)
 627                 return;
 628
 629         switch (state) {
 630         case G_SUPPLICANT_STATE_SCANNING:
 631                 break;
 632
 633         case G_SUPPLICANT_STATE_AUTHENTICATING:
 634         case G_SUPPLICANT_STATE_ASSOCIATING:
 635                 connman_network_set_associating(network, TRUE);
 636                 break;
 637
 638         case G_SUPPLICANT_STATE_COMPLETED:
 639                 if (handle_wps_completion(interface, network, device, wifi) ==
 640                                                                         FALSE)
 641                         break;
 642
 643                 /* reset scan trigger and schedule background scan */
 644                 connman_device_schedule_scan(device);
 645
 646                 if (get_bssid(device, bssid, &bssid_len) == 0)
 647                         connman_network_set_address(network,
 648                                                         bssid, bssid_len);
 649                 connman_network_set_connected(network, TRUE);
 650                 break;
 651
 652         case G_SUPPLICANT_STATE_DISCONNECTED:
 653                 /*
 654                  * If we're in one of the idle modes, we have
 655                  * not started association yet and thus setting
 656                  * those ones to FALSE could cancel an association
 657                  * in progress.
 658                  */
 659                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
 660                 if (wps == TRUE)
 661                         if (is_idle_wps(interface, wifi) == TRUE)
 662                                 break;
 663
 664                 if (is_idle(wifi))
 665                         break;
 666                 connman_network_set_associating(network, FALSE);
 667                 connman_network_set_connected(network, FALSE);
 668                 break;
 669
 670         case G_SUPPLICANT_STATE_INACTIVE:
 671                 connman_network_set_associating(network, FALSE);
 672                 break;
 673
 674         case G_SUPPLICANT_STATE_UNKNOWN:
 675         case G_SUPPLICANT_STATE_ASSOCIATED:
 676         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
 677         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
 678                 break;
 679         }
 680
 681         wifi->state = state;
 682
 683         DBG("DONE");
 684 }
 685
 686 static void interface_removed(GSupplicantInterface *interface)
 687 {
 688         const char *ifname = g_supplicant_interface_get_ifname(interface);
 689         struct wifi_data *wifi;
 690
 691         DBG("ifname %s", ifname);
 692
 693         wifi = g_supplicant_interface_get_data(interface);
 694
 695         if (wifi == NULL || wifi->device == NULL) {
 696                 connman_error("Wrong wifi pointer");
 697                 return;
 698         }
 699
 700         connman_device_set_powered(wifi->device, FALSE);
 701 }
 702
 703 static void scan_started(GSupplicantInterface *interface)
 704 {
 705         struct wifi_data *wifi;
 706
 707         DBG("");
 708
 709         wifi = g_supplicant_interface_get_data(interface);
 710
 711         if (wifi == NULL)
 712                 return;
 713 }
 714
 715 static void scan_finished(GSupplicantInterface *interface)
 716 {
 717         struct wifi_data *wifi;
 718
 719         DBG("");
 720
 721         wifi = g_supplicant_interface_get_data(interface);
 722
 723         if (wifi == NULL)
 724                 return;
 725 }
 726
 727 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
 728 {
 729         unsigned char strength;
 730
 731         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
 732         if (strength > 100)
 733                 strength = 100;
 734
 735         return strength;
 736 }
 737
 738 static void network_added(GSupplicantNetwork *supplicant_network)
 739 {
 740         struct connman_network *network;
 741         GSupplicantInterface *interface;
 742         struct wifi_data *wifi;
 743         const char *name, *identifier, *mode, *security, *group;
 744         const unsigned char *ssid;
 745         unsigned int ssid_len;
 746         connman_bool_t wps;
 747
 748         DBG("");
 749
 750         interface = g_supplicant_network_get_interface(supplicant_network);
 751         wifi = g_supplicant_interface_get_data(interface);
 752         name = g_supplicant_network_get_name(supplicant_network);
 753         identifier = g_supplicant_network_get_identifier(supplicant_network);
 754         mode = g_supplicant_network_get_mode(supplicant_network);
 755         security = g_supplicant_network_get_security(supplicant_network);
 756         group = g_supplicant_network_get_identifier(supplicant_network);
 757         wps = g_supplicant_network_get_wps(supplicant_network);
 758
 759         if (wifi == NULL)
 760                 return;
 761
 762         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
 763
 764         network = connman_device_get_network(wifi->device, identifier);
 765
 766         if (network == NULL) {
 767                 network = connman_network_create(identifier,
 768                                                 CONNMAN_NETWORK_TYPE_WIFI);
 769                 if (network == NULL)
 770                         return;
 771
 772                 connman_network_set_index(network, wifi->index);
 773
 774                 if (connman_device_add_network(wifi->device, network) < 0) {
 775                         connman_network_unref(network);
 776                         return;
 777                 }
 778         }
 779
 780         if (name != NULL && name[0] != '\0')
 781                 connman_network_set_name(network, name);
 782
 783         connman_network_set_blob(network, "WiFi.SSID",
 784                                                 ssid, ssid_len);
 785         connman_network_set_string(network, "WiFi.Mode", mode);
 786         connman_network_set_string(network, "WiFi.Security", security);
 787         connman_network_set_strength(network,
 788                                 calculate_strength(supplicant_network));
 789         connman_network_set_bool(network, "WiFi.WPS", wps);
 790
 791         connman_network_set_available(network, TRUE);
 792
 793         if (ssid != NULL)
 794                 connman_network_set_group(network, group);
 795 }
 796
 797 static void network_removed(GSupplicantNetwork *network)
 798 {
 799         GSupplicantInterface *interface;
 800         struct wifi_data *wifi;
 801         const char *name, *identifier;
 802
 803         interface = g_supplicant_network_get_interface(network);
 804         wifi = g_supplicant_interface_get_data(interface);
 805         identifier = g_supplicant_network_get_identifier(network);
 806         name = g_supplicant_network_get_name(network);
 807
 808         DBG("name %s", name);
 809
 810         if (wifi != NULL)
 811                 connman_device_remove_network(wifi->device, identifier);
 812 }
 813
 814 static void debug(const char *str)
 815 {
 816         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
 817                 connman_debug("%s", str);
 818 }
 819
 820 static const GSupplicantCallbacks callbacks = {
 821         .system_ready           = system_ready,
 822         .system_killed          = system_killed,
 823         .interface_added        = interface_added,
 824         .interface_state        = interface_state,
 825         .interface_removed      = interface_removed,
 826         .scan_started           = scan_started,
 827         .scan_finished          = scan_finished,
 828         .network_added          = network_added,
 829         .network_removed        = network_removed,
 830         .debug                  = debug,
 831 };
 832
 833
 834 static int tech_probe(struct connman_technology *technology)
 835 {
 836         wifi_technology = technology;
 837
 838         return 0;
 839 }
 840
 841 static void tech_remove(struct connman_technology *technology)
 842 {
 843         wifi_technology = NULL;
 844 }
 845
 846 static void regdom_callback(void *user_data)
 847 {
 848         char *alpha2 = user_data;
 849
 850         DBG("");
 851
 852         if (wifi_technology == NULL)
 853                 return;
 854
 855         connman_technology_regdom_notify(wifi_technology, alpha2);
 856 }
 857
 858 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
 859 {
 860         return g_supplicant_set_country(alpha2, regdom_callback, alpha2);
 861 }
 862
 863 static struct connman_technology_driver tech_driver = {
 864         .name           = "wifi",
 865         .type           = CONNMAN_SERVICE_TYPE_WIFI,
 866         .probe          = tech_probe,
 867         .remove         = tech_remove,
 868         .set_regdom     = tech_set_regdom,
 869 };
 870
 871 static int wifi_init(void)
 872 {
 873         int err;
 874
 875         err = connman_network_driver_register(&network_driver);
 876         if (err < 0)
 877                 return err;
 878
 879         err = g_supplicant_register(&callbacks);
 880         if (err < 0) {
 881                 connman_network_driver_unregister(&network_driver);
 882                 return err;
 883         }
 884
 885         err = connman_technology_driver_register(&tech_driver);
 886         if (err < 0) {
 887                 g_supplicant_unregister(&callbacks);
 888                 connman_network_driver_unregister(&network_driver);
 889                 return err;
 890         }
 891
 892         return 0;
 893 }
 894
 895 static void wifi_exit(void)
 896 {
 897         DBG();
 898
 899         connman_technology_driver_unregister(&tech_driver);
 900
 901         g_supplicant_unregister(&callbacks);
 902
 903         connman_network_driver_unregister(&network_driver);
 904 }
 905
 906 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 907                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)