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