git.maemo.org Git - wpasupplicant/blob - wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "ieee802_11_defs.h"
  19 #include "wpa_common.h"
  20 #include "config.h"
  21 #include "eap_peer/eap.h"
  22 #include "wpa_supplicant_i.h"
  23 #include "eloop.h"
  24 #include "uuid.h"
  25 #include "wpa_ctrl.h"
  26 #include "eap_common/eap_wsc_common.h"
  27 #include "wps_supplicant.h"
  28
  29
  30 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  31 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  32
  33
  34 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  35 {
  36         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  37
  38         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  39             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  40                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  41                            "try to associate with the received credential");
  42                 wpa_supplicant_deauthenticate(wpa_s,
  43                                               WLAN_REASON_DEAUTH_LEAVING);
  44                 wpa_s->reassociate = 1;
  45                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  46                 return 1;
  47         }
  48
  49         return 0;
  50 }
  51
  52
  53 static int wpa_supplicant_wps_cred(void *ctx,
  54                                    const struct wps_credential *cred)
  55 {
  56         struct wpa_supplicant *wpa_s = ctx;
  57         struct wpa_ssid *ssid = wpa_s->current_ssid;
  58
  59         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
  60
  61         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  62                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
  63                            "on the received credential");
  64                 os_free(ssid->eap.identity);
  65                 ssid->eap.identity = NULL;
  66                 ssid->eap.identity_len = 0;
  67                 os_free(ssid->eap.phase1);
  68                 ssid->eap.phase1 = NULL;
  69                 os_free(ssid->eap.eap_methods);
  70                 ssid->eap.eap_methods = NULL;
  71         } else {
  72                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
  73                            "received credential");
  74                 ssid = wpa_config_add_network(wpa_s->conf);
  75                 if (ssid == NULL)
  76                         return -1;
  77         }
  78
  79         wpa_config_set_network_defaults(ssid);
  80
  81         os_free(ssid->ssid);
  82         ssid->ssid = os_malloc(cred->ssid_len);
  83         if (ssid->ssid) {
  84                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
  85                 ssid->ssid_len = cred->ssid_len;
  86         }
  87
  88         switch (cred->encr_type) {
  89         case WPS_ENCR_NONE:
  90                 ssid->pairwise_cipher = ssid->group_cipher = WPA_CIPHER_NONE;
  91                 break;
  92         case WPS_ENCR_WEP:
  93                 ssid->pairwise_cipher = ssid->group_cipher =
  94                         WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104;
  95                 if (cred->key_len > 0 && cred->key_len <= MAX_WEP_KEY_LEN &&
  96                     cred->key_idx < NUM_WEP_KEYS) {
  97                         os_memcpy(ssid->wep_key[cred->key_idx], cred->key,
  98                                   cred->key_len);
  99                         ssid->wep_key_len[cred->key_idx] = cred->key_len;
 100                         ssid->wep_tx_keyidx = cred->key_idx;
 101                 }
 102                 break;
 103         case WPS_ENCR_TKIP:
 104                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 105                 ssid->group_cipher = WPA_CIPHER_TKIP;
 106                 break;
 107         case WPS_ENCR_AES:
 108                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 109                 ssid->group_cipher = WPA_CIPHER_CCMP | WPA_CIPHER_TKIP;
 110                 break;
 111         }
 112
 113         switch (cred->auth_type) {
 114         case WPS_AUTH_OPEN:
 115                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 116                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 117                 ssid->proto = 0;
 118                 break;
 119         case WPS_AUTH_SHARED:
 120                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 121                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 122                 ssid->proto = 0;
 123                 break;
 124         case WPS_AUTH_WPAPSK:
 125                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 126                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 127                 ssid->proto = WPA_PROTO_WPA;
 128                 break;
 129         case WPS_AUTH_WPA:
 130                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 131                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 132                 ssid->proto = WPA_PROTO_WPA;
 133                 break;
 134         case WPS_AUTH_WPA2:
 135                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 136                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 137                 ssid->proto = WPA_PROTO_RSN;
 138                 break;
 139         case WPS_AUTH_WPA2PSK:
 140                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 141                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 142                 ssid->proto = WPA_PROTO_RSN;
 143                 break;
 144         }
 145
 146         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 147                 if (cred->key_len == 2 * PMK_LEN) {
 148                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 149                                        PMK_LEN)) {
 150                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 151                                            "Key");
 152                                 return -1;
 153                         }
 154                         ssid->psk_set = 1;
 155                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 156                         os_free(ssid->passphrase);
 157                         ssid->passphrase = os_malloc(cred->key_len + 1);
 158                         if (ssid->passphrase == NULL)
 159                                 return -1;
 160                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 161                         ssid->passphrase[cred->key_len] = '\0';
 162                         wpa_config_update_psk(ssid);
 163                 } else {
 164                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 165                                    "length %lu",
 166                                    (unsigned long) cred->key_len);
 167                         return -1;
 168                 }
 169         }
 170
 171 #ifndef CONFIG_NO_CONFIG_WRITE
 172         if (wpa_s->conf->update_config &&
 173             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 174                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 175                 return -1;
 176         }
 177 #endif /* CONFIG_NO_CONFIG_WRITE */
 178
 179         return 0;
 180 }
 181
 182
 183 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 184                                          struct wps_event_m2d *m2d)
 185 {
 186         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 187                 "dev_password_id=%d config_error=%d",
 188                 m2d->dev_password_id, m2d->config_error);
 189 }
 190
 191
 192 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 193                                           struct wps_event_fail *fail)
 194 {
 195         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
 196         wpas_clear_wps(wpa_s);
 197 }
 198
 199
 200 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 201 {
 202         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 203 }
 204
 205
 206 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 207                                      union wps_event_data *data)
 208 {
 209         struct wpa_supplicant *wpa_s = ctx;
 210         switch (event) {
 211         case WPS_EV_M2D:
 212                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 213                 break;
 214         case WPS_EV_FAIL:
 215                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 216                 break;
 217         case WPS_EV_SUCCESS:
 218                 wpa_supplicant_wps_event_success(wpa_s);
 219                 break;
 220         }
 221 }
 222
 223
 224 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 225 {
 226         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 227             eap_is_wps_pin_enrollee(&ssid->eap))
 228                 return WPS_REQ_ENROLLEE;
 229         else
 230                 return WPS_REQ_REGISTRAR;
 231 }
 232
 233
 234 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 235 {
 236         int id;
 237         struct wpa_ssid *ssid;
 238
 239         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 240
 241         /* Remove any existing WPS network from configuration */
 242         ssid = wpa_s->conf->ssid;
 243         while (ssid) {
 244                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 245                         if (ssid == wpa_s->current_ssid)
 246                                 wpa_s->current_ssid = NULL;
 247                         id = ssid->id;
 248                 } else
 249                         id = -1;
 250                 ssid = ssid->next;
 251                 if (id >= 0)
 252                         wpa_config_remove_network(wpa_s->conf, id);
 253         }
 254 }
 255
 256
 257 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 258 {
 259         struct wpa_supplicant *wpa_s = eloop_ctx;
 260         wpa_printf(MSG_DEBUG, "WPS: Requested operation timed out");
 261         wpas_clear_wps(wpa_s);
 262 }
 263
 264
 265 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 266                                               int registrar, const u8 *bssid)
 267 {
 268         struct wpa_ssid *ssid;
 269
 270         ssid = wpa_config_add_network(wpa_s->conf);
 271         if (ssid == NULL)
 272                 return NULL;
 273         wpa_config_set_network_defaults(ssid);
 274         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 275             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 276             wpa_config_set(ssid, "identity", registrar ?
 277                            "\"" WSC_ID_REGISTRAR "\"" :
 278                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 279                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 280                 return NULL;
 281         }
 282
 283         if (bssid) {
 284                 size_t i;
 285                 struct wpa_scan_res *res;
 286
 287                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 288                 ssid->bssid_set = 1;
 289
 290                 /* Try to get SSID from scan results */
 291                 if (wpa_s->scan_res == NULL &&
 292                     wpa_supplicant_get_scan_results(wpa_s) < 0)
 293                         return ssid; /* Could not find any scan results */
 294
 295                 for (i = 0; i < wpa_s->scan_res->num; i++) {
 296                         const u8 *ie;
 297
 298                         res = wpa_s->scan_res->res[i];
 299                         if (os_memcmp(bssid, res->bssid, ETH_ALEN) != 0)
 300                                 continue;
 301
 302                         ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 303                         if (ie == NULL)
 304                                 break;
 305                         os_free(ssid->ssid);
 306                         ssid->ssid = os_malloc(ie[1]);
 307                         if (ssid->ssid == NULL)
 308                                 break;
 309                         os_memcpy(ssid->ssid, ie + 2, ie[1]);
 310                         ssid->ssid_len = ie[1];
 311                         break;
 312                 }
 313         }
 314
 315         return ssid;
 316 }
 317
 318
 319 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 320                              struct wpa_ssid *selected)
 321 {
 322         struct wpa_ssid *ssid;
 323
 324         /* Mark all other networks disabled and trigger reassociation */
 325         ssid = wpa_s->conf->ssid;
 326         while (ssid) {
 327                 ssid->disabled = ssid != selected;
 328                 ssid = ssid->next;
 329         }
 330         wpa_s->disconnected = 0;
 331         wpa_s->reassociate = 1;
 332         wpa_supplicant_req_scan(wpa_s, 0, 0);
 333 }
 334
 335
 336 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 337 {
 338         struct wpa_ssid *ssid;
 339         wpas_clear_wps(wpa_s);
 340         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 341         if (ssid == NULL)
 342                 return -1;
 343         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 344         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 345                                wpa_s, NULL);
 346         wpas_wps_reassoc(wpa_s, ssid);
 347         return 0;
 348 }
 349
 350
 351 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 352                        const char *pin)
 353 {
 354         struct wpa_ssid *ssid;
 355         char val[30];
 356         unsigned int rpin = 0;
 357
 358         wpas_clear_wps(wpa_s);
 359         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 360         if (ssid == NULL)
 361                 return -1;
 362         if (pin)
 363                 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
 364         else {
 365                 rpin = wps_generate_pin();
 366                 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
 367         }
 368         wpa_config_set(ssid, "phase1", val, 0);
 369         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 370                                wpa_s, NULL);
 371         wpas_wps_reassoc(wpa_s, ssid);
 372         return rpin;
 373 }
 374
 375
 376 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 377                        const char *pin)
 378 {
 379         struct wpa_ssid *ssid;
 380         char val[30];
 381
 382         if (!pin)
 383                 return -1;
 384         wpas_clear_wps(wpa_s);
 385         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 386         if (ssid == NULL)
 387                 return -1;
 388         os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
 389         wpa_config_set(ssid, "phase1", val, 0);
 390         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 391                                wpa_s, NULL);
 392         wpas_wps_reassoc(wpa_s, ssid);
 393         return 0;
 394 }
 395
 396
 397 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 398 {
 399         struct wps_context *wps;
 400
 401         wps = os_zalloc(sizeof(*wps));
 402         if (wps == NULL)
 403                 return -1;
 404
 405         wps->cred_cb = wpa_supplicant_wps_cred;
 406         wps->event_cb = wpa_supplicant_wps_event;
 407         wps->cb_ctx = wpa_s;
 408
 409         wps->dev.device_name = wpa_s->conf->device_name;
 410         wps->dev.manufacturer = wpa_s->conf->manufacturer;
 411         wps->dev.model_name = wpa_s->conf->model_name;
 412         wps->dev.model_number = wpa_s->conf->model_number;
 413         wps->dev.serial_number = wpa_s->conf->serial_number;
 414         if (wpa_s->conf->device_type) {
 415                 char *pos;
 416                 u8 oui[4];
 417                 /* <categ>-<OUI>-<subcateg> */
 418                 wps->dev.categ = atoi(wpa_s->conf->device_type);
 419                 pos = os_strchr(wpa_s->conf->device_type, '-');
 420                 if (pos == NULL) {
 421                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 422                         os_free(wps);
 423                         return -1;
 424                 }
 425                 pos++;
 426                 if (hexstr2bin(pos, oui, 4)) {
 427                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 428                         os_free(wps);
 429                         return -1;
 430                 }
 431                 wps->dev.oui = WPA_GET_BE32(oui);
 432                 pos = os_strchr(pos, '-');
 433                 if (pos == NULL) {
 434                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 435                         os_free(wps);
 436                         return -1;
 437                 }
 438                 pos++;
 439                 wps->dev.sub_categ = atoi(pos);
 440         }
 441         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
 442         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
 443         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 444         if (is_nil_uuid(wpa_s->conf->uuid)) {
 445                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
 446                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 447                             wps->uuid, WPS_UUID_LEN);
 448         } else
 449                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 450
 451         wpa_s->wps = wps;
 452
 453         return 0;
 454 }
 455
 456
 457 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 458 {
 459         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 460
 461         if (wpa_s->wps == NULL)
 462                 return;
 463
 464         os_free(wpa_s->wps->network_key);
 465         os_free(wpa_s->wps);
 466         wpa_s->wps = NULL;
 467 }
 468
 469
 470 int wpas_wps_ssid_bss_match(struct wpa_ssid *ssid, struct wpa_scan_res *bss)
 471 {
 472         struct wpabuf *wps_ie;
 473
 474         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
 475                 return -1;
 476
 477         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 478         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 479                 if (!wps_ie) {
 480                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 481                         return 0;
 482                 }
 483
 484                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
 485                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 486                                    "without active PBC Registrar");
 487                         wpabuf_free(wps_ie);
 488                         return 0;
 489                 }
 490
 491                 /* TODO: overlap detection */
 492                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 493                            "(Active PBC)");
 494                 wpabuf_free(wps_ie);
 495                 return 1;
 496         }
 497
 498         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 499                 if (!wps_ie) {
 500                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 501                         return 0;
 502                 }
 503
 504                 if (!wps_is_selected_pin_registrar(wps_ie)) {
 505                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 506                                    "without active PIN Registrar");
 507                         wpabuf_free(wps_ie);
 508                         return 0;
 509                 }
 510                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 511                            "(Active PIN)");
 512                 wpabuf_free(wps_ie);
 513                 return 1;
 514         }
 515
 516         if (wps_ie) {
 517                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 518                 wpabuf_free(wps_ie);
 519                 return 1;
 520         }
 521
 522         return -1;
 523 }
 524
 525
 526 int wpas_wps_ssid_wildcard_ok(struct wpa_ssid *ssid,
 527                               struct wpa_scan_res *bss)
 528 {
 529         struct wpabuf *wps_ie = NULL;
 530         int ret = 0;
 531
 532         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 533                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 534                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
 535                         /* allow wildcard SSID for WPS PBC */
 536                         ret = 1;
 537                 }
 538         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 539                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 540                 if (wps_ie && wps_is_selected_pin_registrar(wps_ie)) {
 541                         /* allow wildcard SSID for WPS PIN */
 542                         ret = 1;
 543                 }
 544         }
 545
 546         if (!ret && ssid->bssid_set &&
 547             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
 548                 /* allow wildcard SSID due to hardcoded BSSID match */
 549                 ret = 1;
 550         }
 551
 552         wpabuf_free(wps_ie);
 553
 554         return ret;
 555 }
 556
 557
 558 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
 559                               struct wpa_scan_res *selected,
 560                               struct wpa_ssid *ssid)
 561 {
 562         const u8 *sel_uuid, *uuid;
 563         size_t i;
 564         struct wpabuf *wps_ie;
 565         int ret = 0;
 566
 567         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
 568                 return 0;
 569
 570         /* Make sure that only one AP is in active PBC mode */
 571         wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
 572         if (wps_ie)
 573                 sel_uuid = wps_get_uuid_e(wps_ie);
 574         else
 575                 sel_uuid = NULL;
 576
 577         for (i = 0; i < wpa_s->scan_res->num; i++) {
 578                 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
 579                 struct wpabuf *ie;
 580                 if (bss == selected)
 581                         continue;
 582                 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 583                 if (!ie)
 584                         continue;
 585                 if (!wps_is_selected_pbc_registrar(ie)) {
 586                         wpabuf_free(ie);
 587                         continue;
 588                 }
 589                 uuid = wps_get_uuid_e(ie);
 590                 if (sel_uuid == NULL || uuid == NULL ||
 591                     os_memcmp(sel_uuid, uuid, 16) != 0) {
 592                         ret = 1; /* PBC overlap */
 593                         wpabuf_free(ie);
 594                         break;
 595                 }
 596
 597                 /* TODO: verify that this is reasonable dual-band situation */
 598
 599                 wpabuf_free(ie);
 600         }
 601
 602         wpabuf_free(wps_ie);
 603
 604         return ret;
 605 }
 606
 607
 608 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
 609 {
 610         size_t i;
 611
 612         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
 613                 return;
 614
 615         for (i = 0; i < wpa_s->scan_res->num; i++) {
 616                 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
 617                 struct wpabuf *ie;
 618                 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 619                 if (!ie)
 620                         continue;
 621                 if (wps_is_selected_pbc_registrar(ie))
 622                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
 623                 else if (wps_is_selected_pin_registrar(ie))
 624                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
 625                 else
 626                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
 627                 wpabuf_free(ie);
 628                 break;
 629         }
 630 }
 631
 632
 633 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
 634 {
 635         struct wpa_ssid *ssid;
 636
 637         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 638                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
 639                         return 1;
 640         }
 641
 642         return 0;
 643 }