wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2010, 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 "scan.h"
  35 #include "wps_supplicant.h"
  36
  37
  38 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  39
  40 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  41 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  42
  43
  44 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  45 {
  46         if (!wpa_s->wps_success &&
  47             wpa_s->current_ssid &&
  48             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  49                 const u8 *bssid = wpa_s->bssid;
  50                 if (is_zero_ether_addr(bssid))
  51                         bssid = wpa_s->pending_bssid;
  52
  53                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  54                            " did not succeed - continue trying to find "
  55                            "suitable AP", MAC2STR(bssid));
  56                 wpa_blacklist_add(wpa_s, bssid);
  57
  58                 wpa_supplicant_deauthenticate(wpa_s,
  59                                               WLAN_REASON_DEAUTH_LEAVING);
  60                 wpa_s->reassociate = 1;
  61                 wpa_supplicant_req_scan(wpa_s,
  62                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  63                 wpa_s->blacklist_cleared = 0;
  64                 return 1;
  65         }
  66
  67         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  68
  69         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  70             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  71                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  72                            "try to associate with the received credential");
  73                 wpa_supplicant_deauthenticate(wpa_s,
  74                                               WLAN_REASON_DEAUTH_LEAVING);
  75                 wpa_s->reassociate = 1;
  76                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  77                 return 1;
  78         }
  79
  80         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  81                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  82                            "for external credential processing");
  83                 wpas_clear_wps(wpa_s);
  84                 wpa_supplicant_deauthenticate(wpa_s,
  85                                               WLAN_REASON_DEAUTH_LEAVING);
  86                 return 1;
  87         }
  88
  89         return 0;
  90 }
  91
  92
  93 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
  94                                          struct wpa_ssid *ssid,
  95                                          const struct wps_credential *cred)
  96 {
  97         struct wpa_driver_capa capa;
  98         struct wpa_bss *bss;
  99         const u8 *ie;
 100         struct wpa_ie_data adv;
 101         int wpa2 = 0, ccmp = 0;
 102
 103         /*
 104          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 105          * case they are configured for mixed mode operation (WPA+WPA2 and
 106          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 107          * actually supports stronger security and select that if the client
 108          * has support for it, too.
 109          */
 110
 111         if (wpa_drv_get_capa(wpa_s, &capa))
 112                 return; /* Unknown what driver supports */
 113
 114         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 115         if (bss == NULL) {
 116                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 117                            "table - use credential as-is");
 118                 return;
 119         }
 120
 121         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 122
 123         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 124         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 125                 wpa2 = 1;
 126                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 127                         ccmp = 1;
 128         } else {
 129                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 130                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 131                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 132                         ccmp = 1;
 133         }
 134
 135         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 136             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 137                 /*
 138                  * TODO: This could be the initial AP configuration and the
 139                  * Beacon contents could change shortly. Should request a new
 140                  * scan and delay addition of the network until the updated
 141                  * scan results are available.
 142                  */
 143                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 144                            "support - use credential as-is");
 145                 return;
 146         }
 147
 148         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 149             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 150             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 151                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 152                            "based on scan results");
 153                 if (wpa_s->conf->ap_scan == 1)
 154                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 155                 else
 156                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 157         }
 158
 159         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 160             (ssid->proto & WPA_PROTO_WPA) &&
 161             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 162                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 163                            "based on scan results");
 164                 if (wpa_s->conf->ap_scan == 1)
 165                         ssid->proto |= WPA_PROTO_RSN;
 166                 else
 167                         ssid->proto = WPA_PROTO_RSN;
 168         }
 169 }
 170
 171
 172 static int wpa_supplicant_wps_cred(void *ctx,
 173                                    const struct wps_credential *cred)
 174 {
 175         struct wpa_supplicant *wpa_s = ctx;
 176         struct wpa_ssid *ssid = wpa_s->current_ssid;
 177         u8 key_idx = 0;
 178         u16 auth_type;
 179
 180         if ((wpa_s->conf->wps_cred_processing == 1 ||
 181              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 182                 size_t blen = cred->cred_attr_len * 2 + 1;
 183                 char *buf = os_malloc(blen);
 184                 if (buf) {
 185                         wpa_snprintf_hex(buf, blen,
 186                                          cred->cred_attr, cred->cred_attr_len);
 187                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 188                                 WPS_EVENT_CRED_RECEIVED, buf);
 189                         os_free(buf);
 190                 }
 191
 192                 wpas_notify_wps_credential(wpa_s, cred);
 193         } else
 194                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 195
 196         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 197                         cred->cred_attr, cred->cred_attr_len);
 198
 199         if (wpa_s->conf->wps_cred_processing == 1)
 200                 return 0;
 201
 202         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 203         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 204                    cred->auth_type);
 205         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 206         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 207         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 208                         cred->key, cred->key_len);
 209         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 210                    MAC2STR(cred->mac_addr));
 211
 212         auth_type = cred->auth_type;
 213         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 214                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 215                            "auth_type into WPA2PSK");
 216                 auth_type = WPS_AUTH_WPA2PSK;
 217         }
 218
 219         if (auth_type != WPS_AUTH_OPEN &&
 220             auth_type != WPS_AUTH_SHARED &&
 221             auth_type != WPS_AUTH_WPAPSK &&
 222             auth_type != WPS_AUTH_WPA2PSK) {
 223                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 224                            "unsupported authentication type 0x%x",
 225                            auth_type);
 226                 return 0;
 227         }
 228
 229         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 230                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 231                            "on the received credential");
 232                 os_free(ssid->eap.identity);
 233                 ssid->eap.identity = NULL;
 234                 ssid->eap.identity_len = 0;
 235                 os_free(ssid->eap.phase1);
 236                 ssid->eap.phase1 = NULL;
 237                 os_free(ssid->eap.eap_methods);
 238                 ssid->eap.eap_methods = NULL;
 239         } else {
 240                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 241                            "received credential");
 242                 ssid = wpa_config_add_network(wpa_s->conf);
 243                 if (ssid == NULL)
 244                         return -1;
 245                 wpas_notify_network_added(wpa_s, ssid);
 246         }
 247
 248         wpa_config_set_network_defaults(ssid);
 249
 250         os_free(ssid->ssid);
 251         ssid->ssid = os_malloc(cred->ssid_len);
 252         if (ssid->ssid) {
 253                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 254                 ssid->ssid_len = cred->ssid_len;
 255         }
 256
 257         switch (cred->encr_type) {
 258         case WPS_ENCR_NONE:
 259                 break;
 260         case WPS_ENCR_WEP:
 261                 if (cred->key_len <= 0)
 262                         break;
 263                 if (cred->key_len != 5 && cred->key_len != 13 &&
 264                     cred->key_len != 10 && cred->key_len != 26) {
 265                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 266                                    "%lu", (unsigned long) cred->key_len);
 267                         return -1;
 268                 }
 269                 if (cred->key_idx > NUM_WEP_KEYS) {
 270                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 271                                    cred->key_idx);
 272                         return -1;
 273                 }
 274                 if (cred->key_idx)
 275                         key_idx = cred->key_idx - 1;
 276                 if (cred->key_len == 10 || cred->key_len == 26) {
 277                         if (hexstr2bin((char *) cred->key,
 278                                        ssid->wep_key[key_idx],
 279                                        cred->key_len / 2) < 0) {
 280                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 281                                            "%d", key_idx);
 282                                 return -1;
 283                         }
 284                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 285                 } else {
 286                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 287                                   cred->key_len);
 288                         ssid->wep_key_len[key_idx] = cred->key_len;
 289                 }
 290                 ssid->wep_tx_keyidx = key_idx;
 291                 break;
 292         case WPS_ENCR_TKIP:
 293                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 294                 break;
 295         case WPS_ENCR_AES:
 296                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 297                 break;
 298         }
 299
 300         switch (auth_type) {
 301         case WPS_AUTH_OPEN:
 302                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 303                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 304                 ssid->proto = 0;
 305                 break;
 306         case WPS_AUTH_SHARED:
 307                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 308                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 309                 ssid->proto = 0;
 310                 break;
 311         case WPS_AUTH_WPAPSK:
 312                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 313                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 314                 ssid->proto = WPA_PROTO_WPA;
 315                 break;
 316         case WPS_AUTH_WPA:
 317                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 318                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 319                 ssid->proto = WPA_PROTO_WPA;
 320                 break;
 321         case WPS_AUTH_WPA2:
 322                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 323                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 324                 ssid->proto = WPA_PROTO_RSN;
 325                 break;
 326         case WPS_AUTH_WPA2PSK:
 327                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 328                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 329                 ssid->proto = WPA_PROTO_RSN;
 330                 break;
 331         }
 332
 333         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 334                 if (cred->key_len == 2 * PMK_LEN) {
 335                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 336                                        PMK_LEN)) {
 337                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 338                                            "Key");
 339                                 return -1;
 340                         }
 341                         ssid->psk_set = 1;
 342                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 343                         os_free(ssid->passphrase);
 344                         ssid->passphrase = os_malloc(cred->key_len + 1);
 345                         if (ssid->passphrase == NULL)
 346                                 return -1;
 347                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 348                         ssid->passphrase[cred->key_len] = '\0';
 349                         wpa_config_update_psk(ssid);
 350                 } else {
 351                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 352                                    "length %lu",
 353                                    (unsigned long) cred->key_len);
 354                         return -1;
 355                 }
 356         }
 357
 358         wpas_wps_security_workaround(wpa_s, ssid, cred);
 359
 360 #ifndef CONFIG_NO_CONFIG_WRITE
 361         if (wpa_s->conf->update_config &&
 362             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 363                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 364                 return -1;
 365         }
 366 #endif /* CONFIG_NO_CONFIG_WRITE */
 367
 368         return 0;
 369 }
 370
 371
 372 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 373                                          struct wps_event_m2d *m2d)
 374 {
 375         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 376                 "dev_password_id=%d config_error=%d",
 377                 m2d->dev_password_id, m2d->config_error);
 378         wpas_notify_wps_event_m2d(wpa_s, m2d);
 379 }
 380
 381
 382 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 383                                           struct wps_event_fail *fail)
 384 {
 385         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
 386         wpas_clear_wps(wpa_s);
 387         wpas_notify_wps_event_fail(wpa_s, fail);
 388 }
 389
 390
 391 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 392 {
 393         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 394         wpa_s->wps_success = 1;
 395         wpas_notify_wps_event_success(wpa_s);
 396 }
 397
 398
 399 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 400                                                struct wps_event_er_ap *ap)
 401 {
 402         char uuid_str[100];
 403         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 404
 405         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 406         if (ap->pri_dev_type)
 407                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 408                                      sizeof(dev_type));
 409         else
 410                 dev_type[0] = '\0';
 411
 412         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 413                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 414                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 415                 ap->friendly_name ? ap->friendly_name : "",
 416                 ap->manufacturer ? ap->manufacturer : "",
 417                 ap->model_description ? ap->model_description : "",
 418                 ap->model_name ? ap->model_name : "",
 419                 ap->manufacturer_url ? ap->manufacturer_url : "",
 420                 ap->model_url ? ap->model_url : "");
 421 }
 422
 423
 424 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 425                                                   struct wps_event_er_ap *ap)
 426 {
 427         char uuid_str[100];
 428         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 429         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 430 }
 431
 432
 433 static void wpa_supplicant_wps_event_er_enrollee_add(
 434         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 435 {
 436         char uuid_str[100];
 437         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 438
 439         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 440         if (enrollee->pri_dev_type)
 441                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 442                                      sizeof(dev_type));
 443         else
 444                 dev_type[0] = '\0';
 445
 446         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 447                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 448                 "|%s|%s|%s|%s|%s|",
 449                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 450                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 451                 enrollee->dev_name ? enrollee->dev_name : "",
 452                 enrollee->manufacturer ? enrollee->manufacturer : "",
 453                 enrollee->model_name ? enrollee->model_name : "",
 454                 enrollee->model_number ? enrollee->model_number : "",
 455                 enrollee->serial_number ? enrollee->serial_number : "");
 456 }
 457
 458
 459 static void wpa_supplicant_wps_event_er_enrollee_remove(
 460         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 461 {
 462         char uuid_str[100];
 463         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 464         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 465                 uuid_str, MAC2STR(enrollee->mac_addr));
 466 }
 467
 468
 469 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 470                                      union wps_event_data *data)
 471 {
 472         struct wpa_supplicant *wpa_s = ctx;
 473         switch (event) {
 474         case WPS_EV_M2D:
 475                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 476                 break;
 477         case WPS_EV_FAIL:
 478                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 479                 break;
 480         case WPS_EV_SUCCESS:
 481                 wpa_supplicant_wps_event_success(wpa_s);
 482                 break;
 483         case WPS_EV_PWD_AUTH_FAIL:
 484                 break;
 485         case WPS_EV_PBC_OVERLAP:
 486                 break;
 487         case WPS_EV_PBC_TIMEOUT:
 488                 break;
 489         case WPS_EV_ER_AP_ADD:
 490                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 491                 break;
 492         case WPS_EV_ER_AP_REMOVE:
 493                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 494                 break;
 495         case WPS_EV_ER_ENROLLEE_ADD:
 496                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 497                                                          &data->enrollee);
 498                 break;
 499         case WPS_EV_ER_ENROLLEE_REMOVE:
 500                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 501                                                             &data->enrollee);
 502                 break;
 503         }
 504 }
 505
 506
 507 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 508 {
 509         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 510             eap_is_wps_pin_enrollee(&ssid->eap))
 511                 return WPS_REQ_ENROLLEE;
 512         else
 513                 return WPS_REQ_REGISTRAR;
 514 }
 515
 516
 517 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 518 {
 519         int id;
 520         struct wpa_ssid *ssid, *remove_ssid = NULL;
 521
 522         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 523
 524         /* Remove any existing WPS network from configuration */
 525         ssid = wpa_s->conf->ssid;
 526         while (ssid) {
 527                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 528                         if (ssid == wpa_s->current_ssid) {
 529                                 wpa_s->current_ssid = NULL;
 530                                 if (ssid != NULL)
 531                                         wpas_notify_network_changed(wpa_s);
 532                         }
 533                         id = ssid->id;
 534                         remove_ssid = ssid;
 535                 } else
 536                         id = -1;
 537                 ssid = ssid->next;
 538                 if (id >= 0) {
 539                         wpas_notify_network_removed(wpa_s, remove_ssid);
 540                         wpa_config_remove_network(wpa_s->conf, id);
 541                 }
 542         }
 543 }
 544
 545
 546 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 547 {
 548         struct wpa_supplicant *wpa_s = eloop_ctx;
 549         wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 550                    "out");
 551         wpas_clear_wps(wpa_s);
 552 }
 553
 554
 555 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 556                                               int registrar, const u8 *bssid)
 557 {
 558         struct wpa_ssid *ssid;
 559
 560         ssid = wpa_config_add_network(wpa_s->conf);
 561         if (ssid == NULL)
 562                 return NULL;
 563         wpas_notify_network_added(wpa_s, ssid);
 564         wpa_config_set_network_defaults(ssid);
 565         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 566             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 567             wpa_config_set(ssid, "identity", registrar ?
 568                            "\"" WSC_ID_REGISTRAR "\"" :
 569                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 570                 wpas_notify_network_removed(wpa_s, ssid);
 571                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 572                 return NULL;
 573         }
 574
 575         if (bssid) {
 576                 struct wpa_bss *bss;
 577                 int count = 0;
 578
 579                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 580                 ssid->bssid_set = 1;
 581
 582                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 583                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 584                                 continue;
 585
 586                         os_free(ssid->ssid);
 587                         ssid->ssid = os_malloc(bss->ssid_len);
 588                         if (ssid->ssid == NULL)
 589                                 break;
 590                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 591                         ssid->ssid_len = bss->ssid_len;
 592                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 593                                           "scan results",
 594                                           ssid->ssid, ssid->ssid_len);
 595                         count++;
 596                 }
 597
 598                 if (count > 1) {
 599                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 600                                    "for the AP; use wildcard");
 601                         os_free(ssid->ssid);
 602                         ssid->ssid = NULL;
 603                         ssid->ssid_len = 0;
 604                 }
 605         }
 606
 607         return ssid;
 608 }
 609
 610
 611 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 612                              struct wpa_ssid *selected)
 613 {
 614         struct wpa_ssid *ssid;
 615
 616         /* Mark all other networks disabled and trigger reassociation */
 617         ssid = wpa_s->conf->ssid;
 618         while (ssid) {
 619                 int was_disabled = ssid->disabled;
 620                 ssid->disabled = ssid != selected;
 621                 if (was_disabled != ssid->disabled)
 622                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 623                 ssid = ssid->next;
 624         }
 625         wpa_s->disconnected = 0;
 626         wpa_s->reassociate = 1;
 627         wpa_s->scan_runs = 0;
 628         wpa_s->wps_success = 0;
 629         wpa_s->blacklist_cleared = 0;
 630         wpa_supplicant_req_scan(wpa_s, 0, 0);
 631 }
 632
 633
 634 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 635 {
 636         struct wpa_ssid *ssid;
 637         wpas_clear_wps(wpa_s);
 638         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 639         if (ssid == NULL)
 640                 return -1;
 641         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 642         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 643                                wpa_s, NULL);
 644         wpas_wps_reassoc(wpa_s, ssid);
 645         return 0;
 646 }
 647
 648
 649 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 650                        const char *pin)
 651 {
 652         struct wpa_ssid *ssid;
 653         char val[128];
 654         unsigned int rpin = 0;
 655
 656         wpas_clear_wps(wpa_s);
 657         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 658         if (ssid == NULL)
 659                 return -1;
 660         if (pin)
 661                 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
 662         else {
 663                 rpin = wps_generate_pin();
 664                 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
 665         }
 666         wpa_config_set(ssid, "phase1", val, 0);
 667         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 668                                wpa_s, NULL);
 669         wpas_wps_reassoc(wpa_s, ssid);
 670         return rpin;
 671 }
 672
 673
 674 #ifdef CONFIG_WPS_OOB
 675 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 676                        char *path, char *method, char *name)
 677 {
 678         struct wps_context *wps = wpa_s->wps;
 679         struct oob_device_data *oob_dev;
 680
 681         oob_dev = wps_get_oob_device(device_type);
 682         if (oob_dev == NULL)
 683                 return -1;
 684         oob_dev->device_path = path;
 685         oob_dev->device_name = name;
 686         wps->oob_conf.oob_method = wps_get_oob_method(method);
 687
 688         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 689                 /*
 690                  * Use pre-configured DH keys in order to be able to write the
 691                  * key hash into the OOB file.
 692                  */
 693                 wpabuf_free(wps->dh_pubkey);
 694                 wpabuf_free(wps->dh_privkey);
 695                 wps->dh_privkey = NULL;
 696                 wps->dh_pubkey = NULL;
 697                 dh5_free(wps->dh_ctx);
 698                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 699                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 700                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 701                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 702                                    "Diffie-Hellman handshake");
 703                         return -1;
 704                 }
 705         }
 706
 707         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 708                 wpas_clear_wps(wpa_s);
 709
 710         if (wps_process_oob(wps, oob_dev, 0) < 0)
 711                 return -1;
 712
 713         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 714              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 715             wpas_wps_start_pin(wpa_s, NULL,
 716                                wpabuf_head(wps->oob_conf.dev_password)) < 0)
 717                         return -1;
 718
 719         return 0;
 720 }
 721 #endif /* CONFIG_WPS_OOB */
 722
 723
 724 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 725                        const char *pin, struct wps_new_ap_settings *settings)
 726 {
 727         struct wpa_ssid *ssid;
 728         char val[200];
 729         char *pos, *end;
 730         int res;
 731
 732         if (!pin)
 733                 return -1;
 734         wpas_clear_wps(wpa_s);
 735         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 736         if (ssid == NULL)
 737                 return -1;
 738         pos = val;
 739         end = pos + sizeof(val);
 740         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 741         if (res < 0 || res >= end - pos)
 742                 return -1;
 743         pos += res;
 744         if (settings) {
 745                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 746                                   "new_encr=%s new_key=%s",
 747                                   settings->ssid_hex, settings->auth,
 748                                   settings->encr, settings->key_hex);
 749                 if (res < 0 || res >= end - pos)
 750                         return -1;
 751                 pos += res;
 752         }
 753         res = os_snprintf(pos, end - pos, "\"");
 754         if (res < 0 || res >= end - pos)
 755                 return -1;
 756         wpa_config_set(ssid, "phase1", val, 0);
 757         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 758                                wpa_s, NULL);
 759         wpas_wps_reassoc(wpa_s, ssid);
 760         return 0;
 761 }
 762
 763
 764 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 765                                size_t psk_len)
 766 {
 767         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 768                    "STA " MACSTR, MAC2STR(mac_addr));
 769         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 770
 771         /* TODO */
 772
 773         return 0;
 774 }
 775
 776
 777 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 778                                    const struct wps_device_data *dev)
 779 {
 780         char uuid[40], txt[400];
 781         int len;
 782         char devtype[WPS_DEV_TYPE_BUFSIZE];
 783         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 784                 return;
 785         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 786         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 787                           " [%s|%s|%s|%s|%s|%s]",
 788                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 789                           dev->manufacturer, dev->model_name,
 790                           dev->model_number, dev->serial_number,
 791                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 792                                                sizeof(devtype)));
 793         if (len > 0 && len < (int) sizeof(txt))
 794                 wpa_printf(MSG_INFO, "%s", txt);
 795 }
 796
 797
 798 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 799                                     u16 sel_reg_config_methods)
 800 {
 801 #ifdef CONFIG_WPS_ER
 802         struct wpa_supplicant *wpa_s = ctx;
 803
 804         if (wpa_s->wps_er == NULL)
 805                 return;
 806         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 807                            sel_reg_config_methods);
 808 #endif /* CONFIG_WPS_ER */
 809 }
 810
 811
 812 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 813 {
 814         struct wps_context *wps;
 815         struct wps_registrar_config rcfg;
 816
 817         wps = os_zalloc(sizeof(*wps));
 818         if (wps == NULL)
 819                 return -1;
 820
 821         wps->cred_cb = wpa_supplicant_wps_cred;
 822         wps->event_cb = wpa_supplicant_wps_event;
 823         wps->cb_ctx = wpa_s;
 824
 825         wps->dev.device_name = wpa_s->conf->device_name;
 826         wps->dev.manufacturer = wpa_s->conf->manufacturer;
 827         wps->dev.model_name = wpa_s->conf->model_name;
 828         wps->dev.model_number = wpa_s->conf->model_number;
 829         wps->dev.serial_number = wpa_s->conf->serial_number;
 830         wps->config_methods =
 831                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
 832         if (wpa_s->conf->device_type &&
 833             wps_dev_type_str2bin(wpa_s->conf->device_type,
 834                                  wps->dev.pri_dev_type) < 0) {
 835                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 836                 os_free(wps);
 837                 return -1;
 838         }
 839         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
 840         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
 841         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 842         if (is_nil_uuid(wpa_s->conf->uuid)) {
 843                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
 844                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 845                             wps->uuid, WPS_UUID_LEN);
 846         } else
 847                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 848
 849         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 850         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 851
 852         os_memset(&rcfg, 0, sizeof(rcfg));
 853         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
 854         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
 855         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
 856         rcfg.cb_ctx = wpa_s;
 857
 858         wps->registrar = wps_registrar_init(wps, &rcfg);
 859         if (wps->registrar == NULL) {
 860                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
 861                 os_free(wps);
 862                 return -1;
 863         }
 864
 865         wpa_s->wps = wps;
 866
 867         return 0;
 868 }
 869
 870
 871 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 872 {
 873         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 874
 875         if (wpa_s->wps == NULL)
 876                 return;
 877
 878 #ifdef CONFIG_WPS_ER
 879         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
 880         wpa_s->wps_er = NULL;
 881 #endif /* CONFIG_WPS_ER */
 882
 883         wps_registrar_deinit(wpa_s->wps->registrar);
 884         wpabuf_free(wpa_s->wps->dh_pubkey);
 885         wpabuf_free(wpa_s->wps->dh_privkey);
 886         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
 887         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
 888         os_free(wpa_s->wps->network_key);
 889         os_free(wpa_s->wps);
 890         wpa_s->wps = NULL;
 891 }
 892
 893
 894 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
 895                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
 896 {
 897         struct wpabuf *wps_ie;
 898
 899         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
 900                 return -1;
 901
 902         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 903         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 904                 if (!wps_ie) {
 905                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 906                         return 0;
 907                 }
 908
 909                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
 910                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 911                                    "without active PBC Registrar");
 912                         wpabuf_free(wps_ie);
 913                         return 0;
 914                 }
 915
 916                 /* TODO: overlap detection */
 917                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 918                            "(Active PBC)");
 919                 wpabuf_free(wps_ie);
 920                 return 1;
 921         }
 922
 923         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 924                 if (!wps_ie) {
 925                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 926                         return 0;
 927                 }
 928
 929                 /*
 930                  * Start with WPS APs that advertise active PIN Registrar and
 931                  * allow any WPS AP after third scan since some APs do not set
 932                  * Selected Registrar attribute properly when using external
 933                  * Registrar.
 934                  */
 935                 if (!wps_is_selected_pin_registrar(wps_ie)) {
 936                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
 937                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 938                                            "without active PIN Registrar");
 939                                 wpabuf_free(wps_ie);
 940                                 return 0;
 941                         }
 942                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 943                 } else {
 944                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 945                                    "(Active PIN)");
 946                 }
 947                 wpabuf_free(wps_ie);
 948                 return 1;
 949         }
 950
 951         if (wps_ie) {
 952                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 953                 wpabuf_free(wps_ie);
 954                 return 1;
 955         }
 956
 957         return -1;
 958 }
 959
 960
 961 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
 962                               struct wpa_ssid *ssid,
 963                               struct wpa_scan_res *bss)
 964 {
 965         struct wpabuf *wps_ie = NULL;
 966         int ret = 0;
 967
 968         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 969                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 970                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
 971                         /* allow wildcard SSID for WPS PBC */
 972                         ret = 1;
 973                 }
 974         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 975                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 976                 if (wps_ie &&
 977                     (wps_is_selected_pin_registrar(wps_ie) ||
 978                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
 979                         /* allow wildcard SSID for WPS PIN */
 980                         ret = 1;
 981                 }
 982         }
 983
 984         if (!ret && ssid->bssid_set &&
 985             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
 986                 /* allow wildcard SSID due to hardcoded BSSID match */
 987                 ret = 1;
 988         }
 989
 990         wpabuf_free(wps_ie);
 991
 992         return ret;
 993 }
 994
 995
 996 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
 997                               struct wpa_bss *selected, struct wpa_ssid *ssid)
 998 {
 999         const u8 *sel_uuid, *uuid;
1000         struct wpabuf *wps_ie;
1001         int ret = 0;
1002         struct wpa_bss *bss;
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_bss_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         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1015                 struct wpabuf *ie;
1016                 if (bss == selected)
1017                         continue;
1018                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1019                 if (!ie)
1020                         continue;
1021                 if (!wps_is_selected_pbc_registrar(ie)) {
1022                         wpabuf_free(ie);
1023                         continue;
1024                 }
1025                 uuid = wps_get_uuid_e(ie);
1026                 if (sel_uuid == NULL || uuid == NULL ||
1027                     os_memcmp(sel_uuid, uuid, 16) != 0) {
1028                         ret = 1; /* PBC overlap */
1029                         wpabuf_free(ie);
1030                         break;
1031                 }
1032
1033                 /* TODO: verify that this is reasonable dual-band situation */
1034
1035                 wpabuf_free(ie);
1036         }
1037
1038         wpabuf_free(wps_ie);
1039
1040         return ret;
1041 }
1042
1043
1044 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1045 {
1046         struct wpa_bss *bss;
1047
1048         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1049                 return;
1050
1051         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1052                 struct wpabuf *ie;
1053                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1054                 if (!ie)
1055                         continue;
1056                 if (wps_is_selected_pbc_registrar(ie))
1057                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1058                                      WPS_EVENT_AP_AVAILABLE_PBC);
1059                 else if (wps_is_selected_pin_registrar(ie))
1060                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1061                                      WPS_EVENT_AP_AVAILABLE_PIN);
1062                 else
1063                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1064                                      WPS_EVENT_AP_AVAILABLE);
1065                 wpabuf_free(ie);
1066                 break;
1067         }
1068 }
1069
1070
1071 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1072 {
1073         struct wpa_ssid *ssid;
1074
1075         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1076                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1077                         return 1;
1078         }
1079
1080         return 0;
1081 }
1082
1083
1084 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1085                               char *end)
1086 {
1087         struct wpabuf *wps_ie;
1088         int ret;
1089
1090         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1091         if (wps_ie == NULL)
1092                 return 0;
1093
1094         ret = wps_attr_text(wps_ie, buf, end);
1095         wpabuf_free(wps_ie);
1096         return ret;
1097 }
1098
1099
1100 int wpas_wps_er_start(struct wpa_supplicant *wpa_s)
1101 {
1102 #ifdef CONFIG_WPS_ER
1103         if (wpa_s->wps_er) {
1104                 wps_er_refresh(wpa_s->wps_er);
1105                 return 0;
1106         }
1107         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname);
1108         if (wpa_s->wps_er == NULL)
1109                 return -1;
1110         return 0;
1111 #else /* CONFIG_WPS_ER */
1112         return 0;
1113 #endif /* CONFIG_WPS_ER */
1114 }
1115
1116
1117 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1118 {
1119 #ifdef CONFIG_WPS_ER
1120         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1121         wpa_s->wps_er = NULL;
1122 #endif /* CONFIG_WPS_ER */
1123         return 0;
1124 }
1125
1126
1127 #ifdef CONFIG_WPS_ER
1128 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
1129                         const char *pin)
1130 {
1131         u8 u[UUID_LEN];
1132         int any = 0;
1133
1134         if (os_strcmp(uuid, "any") == 0)
1135                 any = 1;
1136         else if (uuid_str2bin(uuid, u))
1137                 return -1;
1138         return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
1139                                      (const u8 *) pin, os_strlen(pin), 300);
1140 }
1141
1142
1143 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1144 {
1145         u8 u[UUID_LEN];
1146
1147         if (uuid_str2bin(uuid, u))
1148                 return -1;
1149         return wps_er_pbc(wpa_s->wps_er, u);
1150 }
1151
1152
1153 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1154                       const char *pin)
1155 {
1156         u8 u[UUID_LEN];
1157
1158         if (uuid_str2bin(uuid, u))
1159                 return -1;
1160         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1161                             os_strlen(pin));
1162 }
1163
1164
1165 static void wpas_wps_terminate_cb(void *ctx)
1166 {
1167         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1168         eloop_terminate();
1169 }
1170 #endif /* CONFIG_WPS_ER */
1171
1172
1173 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1174 {
1175 #ifdef CONFIG_WPS_ER
1176         if (wpa_s->wps_er) {
1177                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1178                 wpa_s->wps_er = NULL;
1179                 return 1;
1180         }
1181 #endif /* CONFIG_WPS_ER */
1182         return 0;
1183 }