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 "eloop.h"
  19 #include "uuid.h"
  20 #include "crypto/dh_group5.h"
  21 #include "common/ieee802_11_defs.h"
  22 #include "common/ieee802_11_common.h"
  23 #include "common/wpa_common.h"
  24 #include "common/wpa_ctrl.h"
  25 #include "eap_common/eap_wsc_common.h"
  26 #include "eap_peer/eap.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "config.h"
  29 #include "wpa_supplicant_i.h"
  30 #include "driver_i.h"
  31 #include "notify.h"
  32 #include "blacklist.h"
  33 #include "bss.h"
  34 #include "wps_supplicant.h"
  35
  36
  37 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  38
  39 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  40 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  41
  42
  43 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  44 {
  45         if (!wpa_s->wps_success &&
  46             wpa_s->current_ssid &&
  47             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  48                 const u8 *bssid = wpa_s->bssid;
  49                 if (is_zero_ether_addr(bssid))
  50                         bssid = wpa_s->pending_bssid;
  51
  52                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  53                            " did not succeed - continue trying to find "
  54                            "suitable AP", MAC2STR(bssid));
  55                 wpa_blacklist_add(wpa_s, bssid);
  56
  57                 wpa_supplicant_deauthenticate(wpa_s,
  58                                               WLAN_REASON_DEAUTH_LEAVING);
  59                 wpa_s->reassociate = 1;
  60                 wpa_supplicant_req_scan(wpa_s,
  61                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  62                 wpa_s->blacklist_cleared = 0;
  63                 return 1;
  64         }
  65
  66         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  67
  68         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  69             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  70                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  71                            "try to associate with the received credential");
  72                 wpa_supplicant_deauthenticate(wpa_s,
  73                                               WLAN_REASON_DEAUTH_LEAVING);
  74                 wpa_s->reassociate = 1;
  75                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  76                 return 1;
  77         }
  78
  79         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  80                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  81                            "for external credential processing");
  82                 wpas_clear_wps(wpa_s);
  83                 wpa_supplicant_deauthenticate(wpa_s,
  84                                               WLAN_REASON_DEAUTH_LEAVING);
  85                 return 1;
  86         }
  87
  88         return 0;
  89 }
  90
  91
  92 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
  93                                          struct wpa_ssid *ssid,
  94                                          const struct wps_credential *cred)
  95 {
  96         struct wpa_driver_capa capa;
  97         struct wpa_bss *bss;
  98         const u8 *ie;
  99         struct wpa_ie_data adv;
 100         int wpa2 = 0, ccmp = 0;
 101
 102         /*
 103          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 104          * case they are configured for mixed mode operation (WPA+WPA2 and
 105          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 106          * actually supports stronger security and select that if the client
 107          * has support for it, too.
 108          */
 109
 110         if (wpa_drv_get_capa(wpa_s, &capa))
 111                 return; /* Unknown what driver supports */
 112
 113         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 114         if (bss == NULL) {
 115                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 116                            "table - use credential as-is");
 117                 return;
 118         }
 119
 120         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 121
 122         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 123         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 124                 wpa2 = 1;
 125                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 126                         ccmp = 1;
 127         } else {
 128                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 129                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 130                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 131                         ccmp = 1;
 132         }
 133
 134         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 135             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 136                 /*
 137                  * TODO: This could be the initial AP configuration and the
 138                  * Beacon contents could change shortly. Should request a new
 139                  * scan and delay addition of the network until the updated
 140                  * scan results are available.
 141                  */
 142                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 143                            "support - use credential as-is");
 144                 return;
 145         }
 146
 147         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 148             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 149             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 150                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 151                            "based on scan results");
 152                 if (wpa_s->conf->ap_scan == 1)
 153                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 154                 else
 155                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 156         }
 157
 158         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 159             (ssid->proto & WPA_PROTO_WPA) &&
 160             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 161                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 162                            "based on scan results");
 163                 if (wpa_s->conf->ap_scan == 1)
 164                         ssid->proto |= WPA_PROTO_RSN;
 165                 else
 166                         ssid->proto = WPA_PROTO_RSN;
 167         }
 168 }
 169
 170
 171 static int wpa_supplicant_wps_cred(void *ctx,
 172                                    const struct wps_credential *cred)
 173 {
 174         struct wpa_supplicant *wpa_s = ctx;
 175         struct wpa_ssid *ssid = wpa_s->current_ssid;
 176         u8 key_idx = 0;
 177         u16 auth_type;
 178
 179         if ((wpa_s->conf->wps_cred_processing == 1 ||
 180              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 181                 size_t blen = cred->cred_attr_len * 2 + 1;
 182                 char *buf = os_malloc(blen);
 183                 if (buf) {
 184                         wpa_snprintf_hex(buf, blen,
 185                                          cred->cred_attr, cred->cred_attr_len);
 186                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 187                                 WPS_EVENT_CRED_RECEIVED, buf);
 188                         os_free(buf);
 189                 }
 190
 191                 wpas_notify_wps_credential(wpa_s, cred);
 192         } else
 193                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 194
 195         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 196                         cred->cred_attr, cred->cred_attr_len);
 197
 198         if (wpa_s->conf->wps_cred_processing == 1)
 199                 return 0;
 200
 201         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 202         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 203                    cred->auth_type);
 204         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 205         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 206         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 207                         cred->key, cred->key_len);
 208         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 209                    MAC2STR(cred->mac_addr));
 210
 211         auth_type = cred->auth_type;
 212         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 213                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 214                            "auth_type into WPA2PSK");
 215                 auth_type = WPS_AUTH_WPA2PSK;
 216         }
 217
 218         if (auth_type != WPS_AUTH_OPEN &&
 219             auth_type != WPS_AUTH_SHARED &&
 220             auth_type != WPS_AUTH_WPAPSK &&
 221             auth_type != WPS_AUTH_WPA2PSK) {
 222                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 223                            "unsupported authentication type 0x%x",
 224                            auth_type);
 225                 return 0;
 226         }
 227
 228         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 229                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 230                            "on the received credential");
 231                 os_free(ssid->eap.identity);
 232                 ssid->eap.identity = NULL;
 233                 ssid->eap.identity_len = 0;
 234                 os_free(ssid->eap.phase1);
 235                 ssid->eap.phase1 = NULL;
 236                 os_free(ssid->eap.eap_methods);
 237                 ssid->eap.eap_methods = NULL;
 238         } else {
 239                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 240                            "received credential");
 241                 ssid = wpa_config_add_network(wpa_s->conf);
 242                 if (ssid == NULL)
 243                         return -1;
 244                 wpas_notify_network_added(wpa_s, ssid);
 245         }
 246
 247         wpa_config_set_network_defaults(ssid);
 248
 249         os_free(ssid->ssid);
 250         ssid->ssid = os_malloc(cred->ssid_len);
 251         if (ssid->ssid) {
 252                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 253                 ssid->ssid_len = cred->ssid_len;
 254         }
 255
 256         switch (cred->encr_type) {
 257         case WPS_ENCR_NONE:
 258                 break;
 259         case WPS_ENCR_WEP:
 260                 if (cred->key_len <= 0)
 261                         break;
 262                 if (cred->key_len != 5 && cred->key_len != 13 &&
 263                     cred->key_len != 10 && cred->key_len != 26) {
 264                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 265                                    "%lu", (unsigned long) cred->key_len);
 266                         return -1;
 267                 }
 268                 if (cred->key_idx > NUM_WEP_KEYS) {
 269                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 270                                    cred->key_idx);
 271                         return -1;
 272                 }
 273                 if (cred->key_idx)
 274                         key_idx = cred->key_idx - 1;
 275                 if (cred->key_len == 10 || cred->key_len == 26) {
 276                         if (hexstr2bin((char *) cred->key,
 277                                        ssid->wep_key[key_idx],
 278                                        cred->key_len / 2) < 0) {
 279                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 280                                            "%d", key_idx);
 281                                 return -1;
 282                         }
 283                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 284                 } else {
 285                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 286                                   cred->key_len);
 287                         ssid->wep_key_len[key_idx] = cred->key_len;
 288                 }
 289                 ssid->wep_tx_keyidx = key_idx;
 290                 break;
 291         case WPS_ENCR_TKIP:
 292                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 293                 break;
 294         case WPS_ENCR_AES:
 295                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 296                 break;
 297         }
 298
 299         switch (auth_type) {
 300         case WPS_AUTH_OPEN:
 301                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 302                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 303                 ssid->proto = 0;
 304                 break;
 305         case WPS_AUTH_SHARED:
 306                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 307                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 308                 ssid->proto = 0;
 309                 break;
 310         case WPS_AUTH_WPAPSK:
 311                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 312                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 313                 ssid->proto = WPA_PROTO_WPA;
 314                 break;
 315         case WPS_AUTH_WPA:
 316                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 317                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 318                 ssid->proto = WPA_PROTO_WPA;
 319                 break;
 320         case WPS_AUTH_WPA2:
 321                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 322                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 323                 ssid->proto = WPA_PROTO_RSN;
 324                 break;
 325         case WPS_AUTH_WPA2PSK:
 326                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 327                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 328                 ssid->proto = WPA_PROTO_RSN;
 329                 break;
 330         }
 331
 332         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 333                 if (cred->key_len == 2 * PMK_LEN) {
 334                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 335                                        PMK_LEN)) {
 336                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 337                                            "Key");
 338                                 return -1;
 339                         }
 340                         ssid->psk_set = 1;
 341                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 342                         os_free(ssid->passphrase);
 343                         ssid->passphrase = os_malloc(cred->key_len + 1);
 344                         if (ssid->passphrase == NULL)
 345                                 return -1;
 346                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 347                         ssid->passphrase[cred->key_len] = '\0';
 348                         wpa_config_update_psk(ssid);
 349                 } else {
 350                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 351                                    "length %lu",
 352                                    (unsigned long) cred->key_len);
 353                         return -1;
 354                 }
 355         }
 356
 357         wpas_wps_security_workaround(wpa_s, ssid, cred);
 358
 359 #ifndef CONFIG_NO_CONFIG_WRITE
 360         if (wpa_s->conf->update_config &&
 361             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 362                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 363                 return -1;
 364         }
 365 #endif /* CONFIG_NO_CONFIG_WRITE */
 366
 367         return 0;
 368 }
 369
 370
 371 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 372                                          struct wps_event_m2d *m2d)
 373 {
 374         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 375                 "dev_password_id=%d config_error=%d",
 376                 m2d->dev_password_id, m2d->config_error);
 377         wpas_notify_wps_event_m2d(wpa_s, m2d);
 378 }
 379
 380
 381 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 382                                           struct wps_event_fail *fail)
 383 {
 384         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
 385         wpas_clear_wps(wpa_s);
 386         wpas_notify_wps_event_fail(wpa_s, fail);
 387 }
 388
 389
 390 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 391 {
 392         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 393         wpa_s->wps_success = 1;
 394         wpas_notify_wps_event_success(wpa_s);
 395 }
 396
 397
 398 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 399                                                struct wps_event_er_ap *ap)
 400 {
 401         char uuid_str[100];
 402         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 403
 404         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 405         if (ap->pri_dev_type)
 406                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 407                                      sizeof(dev_type));
 408         else
 409                 dev_type[0] = '\0';
 410
 411         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 412                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 413                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 414                 ap->friendly_name ? ap->friendly_name : "",
 415                 ap->manufacturer ? ap->manufacturer : "",
 416                 ap->model_description ? ap->model_description : "",
 417                 ap->model_name ? ap->model_name : "",
 418                 ap->manufacturer_url ? ap->manufacturer_url : "",
 419                 ap->model_url ? ap->model_url : "");
 420 }
 421
 422
 423 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 424                                                   struct wps_event_er_ap *ap)
 425 {
 426         char uuid_str[100];
 427         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 428         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 429 }
 430
 431
 432 static void wpa_supplicant_wps_event_er_enrollee_add(
 433         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 434 {
 435         char uuid_str[100];
 436         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 437
 438         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 439         if (enrollee->pri_dev_type)
 440                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 441                                      sizeof(dev_type));
 442         else
 443                 dev_type[0] = '\0';
 444
 445         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 446                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 447                 "|%s|%s|%s|%s|%s|",
 448                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 449                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 450                 enrollee->dev_name ? enrollee->dev_name : "",
 451                 enrollee->manufacturer ? enrollee->manufacturer : "",
 452                 enrollee->model_name ? enrollee->model_name : "",
 453                 enrollee->model_number ? enrollee->model_number : "",
 454                 enrollee->serial_number ? enrollee->serial_number : "");
 455 }
 456
 457
 458 static void wpa_supplicant_wps_event_er_enrollee_remove(
 459         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 460 {
 461         char uuid_str[100];
 462         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 463         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 464                 uuid_str, MAC2STR(enrollee->mac_addr));
 465 }
 466
 467
 468 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 469                                      union wps_event_data *data)
 470 {
 471         struct wpa_supplicant *wpa_s = ctx;
 472         switch (event) {
 473         case WPS_EV_M2D:
 474                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 475                 break;
 476         case WPS_EV_FAIL:
 477                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 478                 break;
 479         case WPS_EV_SUCCESS:
 480                 wpa_supplicant_wps_event_success(wpa_s);
 481                 break;
 482         case WPS_EV_PWD_AUTH_FAIL:
 483                 break;
 484         case WPS_EV_PBC_OVERLAP:
 485                 break;
 486         case WPS_EV_PBC_TIMEOUT:
 487                 break;
 488         case WPS_EV_ER_AP_ADD:
 489                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 490                 break;
 491         case WPS_EV_ER_AP_REMOVE:
 492                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 493                 break;
 494         case WPS_EV_ER_ENROLLEE_ADD:
 495                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 496                                                          &data->enrollee);
 497                 break;
 498         case WPS_EV_ER_ENROLLEE_REMOVE:
 499                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 500                                                             &data->enrollee);
 501                 break;
 502         }
 503 }
 504
 505
 506 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 507 {
 508         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 509             eap_is_wps_pin_enrollee(&ssid->eap))
 510                 return WPS_REQ_ENROLLEE;
 511         else
 512                 return WPS_REQ_REGISTRAR;
 513 }
 514
 515
 516 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 517 {
 518         int id;
 519         struct wpa_ssid *ssid, *remove_ssid = NULL;
 520
 521         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 522
 523         /* Remove any existing WPS network from configuration */
 524         ssid = wpa_s->conf->ssid;
 525         while (ssid) {
 526                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 527                         if (ssid == wpa_s->current_ssid) {
 528                                 wpa_s->current_ssid = NULL;
 529                                 if (ssid != NULL)
 530                                         wpas_notify_network_changed(wpa_s);
 531                         }
 532                         id = ssid->id;
 533                         remove_ssid = ssid;
 534                 } else
 535                         id = -1;
 536                 ssid = ssid->next;
 537                 if (id >= 0) {
 538                         wpas_notify_network_removed(wpa_s, remove_ssid);
 539                         wpa_config_remove_network(wpa_s->conf, id);
 540                 }
 541         }
 542 }
 543
 544
 545 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 546 {
 547         struct wpa_supplicant *wpa_s = eloop_ctx;
 548         wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 549                    "out");
 550         wpas_clear_wps(wpa_s);
 551 }
 552
 553
 554 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 555                                               int registrar, const u8 *bssid)
 556 {
 557         struct wpa_ssid *ssid;
 558
 559         ssid = wpa_config_add_network(wpa_s->conf);
 560         if (ssid == NULL)
 561                 return NULL;
 562         wpas_notify_network_added(wpa_s, ssid);
 563         wpa_config_set_network_defaults(ssid);
 564         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 565             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 566             wpa_config_set(ssid, "identity", registrar ?
 567                            "\"" WSC_ID_REGISTRAR "\"" :
 568                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 569                 wpas_notify_network_removed(wpa_s, ssid);
 570                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 571                 return NULL;
 572         }
 573
 574         if (bssid) {
 575                 struct wpa_bss *bss;
 576                 int count = 0;
 577
 578                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 579                 ssid->bssid_set = 1;
 580
 581                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 582                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 583                                 continue;
 584
 585                         os_free(ssid->ssid);
 586                         ssid->ssid = os_malloc(bss->ssid_len);
 587                         if (ssid->ssid == NULL)
 588                                 break;
 589                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 590                         ssid->ssid_len = bss->ssid_len;
 591                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 592                                           "scan results",
 593                                           ssid->ssid, ssid->ssid_len);
 594                         count++;
 595                 }
 596
 597                 if (count > 1) {
 598                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 599                                    "for the AP; use wildcard");
 600                         os_free(ssid->ssid);
 601                         ssid->ssid = NULL;
 602                         ssid->ssid_len = 0;
 603                 }
 604         }
 605
 606         return ssid;
 607 }
 608
 609
 610 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 611                              struct wpa_ssid *selected)
 612 {
 613         struct wpa_ssid *ssid;
 614
 615         /* Mark all other networks disabled and trigger reassociation */
 616         ssid = wpa_s->conf->ssid;
 617         while (ssid) {
 618                 int was_disabled = ssid->disabled;
 619                 ssid->disabled = ssid != selected;
 620                 if (was_disabled != ssid->disabled)
 621                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 622                 ssid = ssid->next;
 623         }
 624         wpa_s->disconnected = 0;
 625         wpa_s->reassociate = 1;
 626         wpa_s->scan_runs = 0;
 627         wpa_s->wps_success = 0;
 628         wpa_s->blacklist_cleared = 0;
 629         wpa_supplicant_req_scan(wpa_s, 0, 0);
 630 }
 631
 632
 633 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 634 {
 635         struct wpa_ssid *ssid;
 636         wpas_clear_wps(wpa_s);
 637         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 638         if (ssid == NULL)
 639                 return -1;
 640         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 641         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 642                                wpa_s, NULL);
 643         wpas_wps_reassoc(wpa_s, ssid);
 644         return 0;
 645 }
 646
 647
 648 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 649                        const char *pin)
 650 {
 651         struct wpa_ssid *ssid;
 652         char val[128];
 653         unsigned int rpin = 0;
 654
 655         wpas_clear_wps(wpa_s);
 656         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 657         if (ssid == NULL)
 658                 return -1;
 659         if (pin)
 660                 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
 661         else {
 662                 rpin = wps_generate_pin();
 663                 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
 664         }
 665         wpa_config_set(ssid, "phase1", val, 0);
 666         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 667                                wpa_s, NULL);
 668         wpas_wps_reassoc(wpa_s, ssid);
 669         return rpin;
 670 }
 671
 672
 673 #ifdef CONFIG_WPS_OOB
 674 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 675                        char *path, char *method, char *name)
 676 {
 677         struct wps_context *wps = wpa_s->wps;
 678         struct oob_device_data *oob_dev;
 679
 680         oob_dev = wps_get_oob_device(device_type);
 681         if (oob_dev == NULL)
 682                 return -1;
 683         oob_dev->device_path = path;
 684         oob_dev->device_name = name;
 685         wps->oob_conf.oob_method = wps_get_oob_method(method);
 686
 687         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 688                 /*
 689                  * Use pre-configured DH keys in order to be able to write the
 690                  * key hash into the OOB file.
 691                  */
 692                 wpabuf_free(wps->dh_pubkey);
 693                 wpabuf_free(wps->dh_privkey);
 694                 wps->dh_privkey = NULL;
 695                 wps->dh_pubkey = NULL;
 696                 dh5_free(wps->dh_ctx);
 697                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 698                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 699                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 700                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 701                                    "Diffie-Hellman handshake");
 702                         return -1;
 703                 }
 704         }
 705
 706         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 707                 wpas_clear_wps(wpa_s);
 708
 709         if (wps_process_oob(wps, oob_dev, 0) < 0)
 710                 return -1;
 711
 712         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 713              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 714             wpas_wps_start_pin(wpa_s, NULL,
 715                                wpabuf_head(wps->oob_conf.dev_password)) < 0)
 716                         return -1;
 717
 718         return 0;
 719 }
 720 #endif /* CONFIG_WPS_OOB */
 721
 722
 723 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 724                        const char *pin, struct wps_new_ap_settings *settings)
 725 {
 726         struct wpa_ssid *ssid;
 727         char val[200];
 728         char *pos, *end;
 729         int res;
 730
 731         if (!pin)
 732                 return -1;
 733         wpas_clear_wps(wpa_s);
 734         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 735         if (ssid == NULL)
 736                 return -1;
 737         pos = val;
 738         end = pos + sizeof(val);
 739         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 740         if (res < 0 || res >= end - pos)
 741                 return -1;
 742         pos += res;
 743         if (settings) {
 744                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 745                                   "new_encr=%s new_key=%s",
 746                                   settings->ssid_hex, settings->auth,
 747                                   settings->encr, settings->key_hex);
 748                 if (res < 0 || res >= end - pos)
 749                         return -1;
 750                 pos += res;
 751         }
 752         res = os_snprintf(pos, end - pos, "\"");
 753         if (res < 0 || res >= end - pos)
 754                 return -1;
 755         wpa_config_set(ssid, "phase1", val, 0);
 756         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 757                                wpa_s, NULL);
 758         wpas_wps_reassoc(wpa_s, ssid);
 759         return 0;
 760 }
 761
 762
 763 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 764                                size_t psk_len)
 765 {
 766         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 767                    "STA " MACSTR, MAC2STR(mac_addr));
 768         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 769
 770         /* TODO */
 771
 772         return 0;
 773 }
 774
 775
 776 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 777                                    const struct wps_device_data *dev)
 778 {
 779         char uuid[40], txt[400];
 780         int len;
 781         char devtype[WPS_DEV_TYPE_BUFSIZE];
 782         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 783                 return;
 784         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 785         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 786                           " [%s|%s|%s|%s|%s|%s]",
 787                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 788                           dev->manufacturer, dev->model_name,
 789                           dev->model_number, dev->serial_number,
 790                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 791                                                sizeof(devtype)));
 792         if (len > 0 && len < (int) sizeof(txt))
 793                 wpa_printf(MSG_INFO, "%s", txt);
 794 }
 795
 796
 797 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 798                                     u16 sel_reg_config_methods)
 799 {
 800 #ifdef CONFIG_WPS_ER
 801         struct wpa_supplicant *wpa_s = ctx;
 802
 803         if (wpa_s->wps_er == NULL)
 804                 return;
 805         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 806                            sel_reg_config_methods);
 807 #endif /* CONFIG_WPS_ER */
 808 }
 809
 810
 811 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 812 {
 813         struct wps_context *wps;
 814         struct wps_registrar_config rcfg;
 815
 816         wps = os_zalloc(sizeof(*wps));
 817         if (wps == NULL)
 818                 return -1;
 819
 820         wps->cred_cb = wpa_supplicant_wps_cred;
 821         wps->event_cb = wpa_supplicant_wps_event;
 822         wps->cb_ctx = wpa_s;
 823
 824         wps->dev.device_name = wpa_s->conf->device_name;
 825         wps->dev.manufacturer = wpa_s->conf->manufacturer;
 826         wps->dev.model_name = wpa_s->conf->model_name;
 827         wps->dev.model_number = wpa_s->conf->model_number;
 828         wps->dev.serial_number = wpa_s->conf->serial_number;
 829         wps->config_methods =
 830                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
 831         if (wpa_s->conf->device_type &&
 832             wps_dev_type_str2bin(wpa_s->conf->device_type,
 833                                  wps->dev.pri_dev_type) < 0) {
 834                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 835                 os_free(wps);
 836                 return -1;
 837         }
 838         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
 839         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
 840         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 841         if (is_nil_uuid(wpa_s->conf->uuid)) {
 842                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
 843                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 844                             wps->uuid, WPS_UUID_LEN);
 845         } else
 846                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 847
 848         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 849         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 850
 851         os_memset(&rcfg, 0, sizeof(rcfg));
 852         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
 853         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
 854         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
 855         rcfg.cb_ctx = wpa_s;
 856
 857         wps->registrar = wps_registrar_init(wps, &rcfg);
 858         if (wps->registrar == NULL) {
 859                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
 860                 os_free(wps);
 861                 return -1;
 862         }
 863
 864         wpa_s->wps = wps;
 865
 866         return 0;
 867 }
 868
 869
 870 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 871 {
 872         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 873
 874         if (wpa_s->wps == NULL)
 875                 return;
 876
 877 #ifdef CONFIG_WPS_ER
 878         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
 879         wpa_s->wps_er = NULL;
 880 #endif /* CONFIG_WPS_ER */
 881
 882         wps_registrar_deinit(wpa_s->wps->registrar);
 883         wpabuf_free(wpa_s->wps->dh_pubkey);
 884         wpabuf_free(wpa_s->wps->dh_privkey);
 885         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
 886         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
 887         os_free(wpa_s->wps->network_key);
 888         os_free(wpa_s->wps);
 889         wpa_s->wps = NULL;
 890 }
 891
 892
 893 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
 894                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
 895 {
 896         struct wpabuf *wps_ie;
 897
 898         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
 899                 return -1;
 900
 901         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 902         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 903                 if (!wps_ie) {
 904                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 905                         return 0;
 906                 }
 907
 908                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
 909                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 910                                    "without active PBC Registrar");
 911                         wpabuf_free(wps_ie);
 912                         return 0;
 913                 }
 914
 915                 /* TODO: overlap detection */
 916                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 917                            "(Active PBC)");
 918                 wpabuf_free(wps_ie);
 919                 return 1;
 920         }
 921
 922         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 923                 if (!wps_ie) {
 924                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 925                         return 0;
 926                 }
 927
 928                 /*
 929                  * Start with WPS APs that advertise active PIN Registrar and
 930                  * allow any WPS AP after third scan since some APs do not set
 931                  * Selected Registrar attribute properly when using external
 932                  * Registrar.
 933                  */
 934                 if (!wps_is_selected_pin_registrar(wps_ie)) {
 935                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
 936                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 937                                            "without active PIN Registrar");
 938                                 wpabuf_free(wps_ie);
 939                                 return 0;
 940                         }
 941                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 942                 } else {
 943                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 944                                    "(Active PIN)");
 945                 }
 946                 wpabuf_free(wps_ie);
 947                 return 1;
 948         }
 949
 950         if (wps_ie) {
 951                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 952                 wpabuf_free(wps_ie);
 953                 return 1;
 954         }
 955
 956         return -1;
 957 }
 958
 959
 960 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
 961                               struct wpa_ssid *ssid,
 962                               struct wpa_scan_res *bss)
 963 {
 964         struct wpabuf *wps_ie = NULL;
 965         int ret = 0;
 966
 967         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 968                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 969                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
 970                         /* allow wildcard SSID for WPS PBC */
 971                         ret = 1;
 972                 }
 973         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 974                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 975                 if (wps_ie &&
 976                     (wps_is_selected_pin_registrar(wps_ie) ||
 977                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
 978                         /* allow wildcard SSID for WPS PIN */
 979                         ret = 1;
 980                 }
 981         }
 982
 983         if (!ret && ssid->bssid_set &&
 984             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
 985                 /* allow wildcard SSID due to hardcoded BSSID match */
 986                 ret = 1;
 987         }
 988
 989         wpabuf_free(wps_ie);
 990
 991         return ret;
 992 }
 993
 994
 995 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
 996                               struct wpa_scan_res *selected,
 997                               struct wpa_ssid *ssid)
 998 {
 999         const u8 *sel_uuid, *uuid;
1000         size_t i;
1001         struct wpabuf *wps_ie;
1002         int ret = 0;
1003
1004         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1005                 return 0;
1006
1007         /* Make sure that only one AP is in active PBC mode */
1008         wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1009         if (wps_ie)
1010                 sel_uuid = wps_get_uuid_e(wps_ie);
1011         else
1012                 sel_uuid = NULL;
1013
1014         for (i = 0; i < wpa_s->scan_res->num; i++) {
1015                 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
1016                 struct wpabuf *ie;
1017                 if (bss == selected)
1018                         continue;
1019                 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1020                 if (!ie)
1021                         continue;
1022                 if (!wps_is_selected_pbc_registrar(ie)) {
1023                         wpabuf_free(ie);
1024                         continue;
1025                 }
1026                 uuid = wps_get_uuid_e(ie);
1027                 if (sel_uuid == NULL || uuid == NULL ||
1028                     os_memcmp(sel_uuid, uuid, 16) != 0) {
1029                         ret = 1; /* PBC overlap */
1030                         wpabuf_free(ie);
1031                         break;
1032                 }
1033
1034                 /* TODO: verify that this is reasonable dual-band situation */
1035
1036                 wpabuf_free(ie);
1037         }
1038
1039         wpabuf_free(wps_ie);
1040
1041         return ret;
1042 }
1043
1044
1045 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1046 {
1047         size_t i;
1048
1049         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1050                 return;
1051
1052         for (i = 0; i < wpa_s->scan_res->num; i++) {
1053                 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
1054                 struct wpabuf *ie;
1055                 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1056                 if (!ie)
1057                         continue;
1058                 if (wps_is_selected_pbc_registrar(ie))
1059                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1060                                      WPS_EVENT_AP_AVAILABLE_PBC);
1061                 else if (wps_is_selected_pin_registrar(ie))
1062                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1063                                      WPS_EVENT_AP_AVAILABLE_PIN);
1064                 else
1065                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1066                                      WPS_EVENT_AP_AVAILABLE);
1067                 wpabuf_free(ie);
1068                 break;
1069         }
1070 }
1071
1072
1073 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1074 {
1075         struct wpa_ssid *ssid;
1076
1077         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1078                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1079                         return 1;
1080         }
1081
1082         return 0;
1083 }
1084
1085
1086 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1087                               char *end)
1088 {
1089         struct wpabuf *wps_ie;
1090         int ret;
1091
1092         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1093         if (wps_ie == NULL)
1094                 return 0;
1095
1096         ret = wps_attr_text(wps_ie, buf, end);
1097         wpabuf_free(wps_ie);
1098         return ret;
1099 }
1100
1101
1102 int wpas_wps_er_start(struct wpa_supplicant *wpa_s)
1103 {
1104 #ifdef CONFIG_WPS_ER
1105         if (wpa_s->wps_er) {
1106                 wps_er_refresh(wpa_s->wps_er);
1107                 return 0;
1108         }
1109         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname);
1110         if (wpa_s->wps_er == NULL)
1111                 return -1;
1112         return 0;
1113 #else /* CONFIG_WPS_ER */
1114         return 0;
1115 #endif /* CONFIG_WPS_ER */
1116 }
1117
1118
1119 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1120 {
1121 #ifdef CONFIG_WPS_ER
1122         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1123         wpa_s->wps_er = NULL;
1124 #endif /* CONFIG_WPS_ER */
1125         return 0;
1126 }
1127
1128
1129 #ifdef CONFIG_WPS_ER
1130 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
1131                         const char *pin)
1132 {
1133         u8 u[UUID_LEN];
1134         int any = 0;
1135
1136         if (os_strcmp(uuid, "any") == 0)
1137                 any = 1;
1138         else if (uuid_str2bin(uuid, u))
1139                 return -1;
1140         return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
1141                                      (const u8 *) pin, os_strlen(pin), 300);
1142 }
1143
1144
1145 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1146 {
1147         u8 u[UUID_LEN];
1148
1149         if (uuid_str2bin(uuid, u))
1150                 return -1;
1151         return wps_er_pbc(wpa_s->wps_er, u);
1152 }
1153
1154
1155 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1156                       const char *pin)
1157 {
1158         u8 u[UUID_LEN];
1159
1160         if (uuid_str2bin(uuid, u))
1161                 return -1;
1162         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1163                             os_strlen(pin));
1164 }
1165
1166
1167 static void wpas_wps_terminate_cb(void *ctx)
1168 {
1169         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1170         eloop_terminate();
1171 }
1172 #endif /* CONFIG_WPS_ER */
1173
1174
1175 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1176 {
1177 #ifdef CONFIG_WPS_ER
1178         if (wpa_s->wps_er) {
1179                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1180                 wpa_s->wps_er = NULL;
1181                 return 1;
1182         }
1183 #endif /* CONFIG_WPS_ER */
1184         return 0;
1185 }