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_er_ap_settings(
 472         struct wpa_supplicant *wpa_s,
 473         struct wps_event_er_ap_settings *ap_settings)
 474 {
 475         char uuid_str[100];
 476         char key_str[65];
 477         const struct wps_credential *cred = ap_settings->cred;
 478
 479         key_str[0] = '\0';
 480         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 481                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 482                         os_memcpy(key_str, cred->key, cred->key_len);
 483                         key_str[cred->key_len] = '\0';
 484                 }
 485         }
 486
 487         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 488         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 489         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 490                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 491                      "key=%s",
 492                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 493                      cred->auth_type, cred->encr_type, key_str);
 494 }
 495
 496
 497 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 498                                      union wps_event_data *data)
 499 {
 500         struct wpa_supplicant *wpa_s = ctx;
 501         switch (event) {
 502         case WPS_EV_M2D:
 503                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 504                 break;
 505         case WPS_EV_FAIL:
 506                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 507                 break;
 508         case WPS_EV_SUCCESS:
 509                 wpa_supplicant_wps_event_success(wpa_s);
 510                 break;
 511         case WPS_EV_PWD_AUTH_FAIL:
 512                 break;
 513         case WPS_EV_PBC_OVERLAP:
 514                 break;
 515         case WPS_EV_PBC_TIMEOUT:
 516                 break;
 517         case WPS_EV_ER_AP_ADD:
 518                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 519                 break;
 520         case WPS_EV_ER_AP_REMOVE:
 521                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 522                 break;
 523         case WPS_EV_ER_ENROLLEE_ADD:
 524                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 525                                                          &data->enrollee);
 526                 break;
 527         case WPS_EV_ER_ENROLLEE_REMOVE:
 528                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 529                                                             &data->enrollee);
 530                 break;
 531         case WPS_EV_ER_AP_SETTINGS:
 532                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 533                                                         &data->ap_settings);
 534                 break;
 535         }
 536 }
 537
 538
 539 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 540 {
 541         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 542             eap_is_wps_pin_enrollee(&ssid->eap))
 543                 return WPS_REQ_ENROLLEE;
 544         else
 545                 return WPS_REQ_REGISTRAR;
 546 }
 547
 548
 549 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 550 {
 551         int id;
 552         struct wpa_ssid *ssid, *remove_ssid = NULL;
 553
 554         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 555
 556         /* Remove any existing WPS network from configuration */
 557         ssid = wpa_s->conf->ssid;
 558         while (ssid) {
 559                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 560                         if (ssid == wpa_s->current_ssid) {
 561                                 wpa_s->current_ssid = NULL;
 562                                 if (ssid != NULL)
 563                                         wpas_notify_network_changed(wpa_s);
 564                         }
 565                         id = ssid->id;
 566                         remove_ssid = ssid;
 567                 } else
 568                         id = -1;
 569                 ssid = ssid->next;
 570                 if (id >= 0) {
 571                         wpas_notify_network_removed(wpa_s, remove_ssid);
 572                         wpa_config_remove_network(wpa_s->conf, id);
 573                 }
 574         }
 575 }
 576
 577
 578 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 579 {
 580         struct wpa_supplicant *wpa_s = eloop_ctx;
 581         wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 582                    "out");
 583         wpas_clear_wps(wpa_s);
 584 }
 585
 586
 587 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 588                                               int registrar, const u8 *bssid)
 589 {
 590         struct wpa_ssid *ssid;
 591
 592         ssid = wpa_config_add_network(wpa_s->conf);
 593         if (ssid == NULL)
 594                 return NULL;
 595         wpas_notify_network_added(wpa_s, ssid);
 596         wpa_config_set_network_defaults(ssid);
 597         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 598             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 599             wpa_config_set(ssid, "identity", registrar ?
 600                            "\"" WSC_ID_REGISTRAR "\"" :
 601                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 602                 wpas_notify_network_removed(wpa_s, ssid);
 603                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 604                 return NULL;
 605         }
 606
 607         if (bssid) {
 608                 struct wpa_bss *bss;
 609                 int count = 0;
 610
 611                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 612                 ssid->bssid_set = 1;
 613
 614                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 615                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 616                                 continue;
 617
 618                         os_free(ssid->ssid);
 619                         ssid->ssid = os_malloc(bss->ssid_len);
 620                         if (ssid->ssid == NULL)
 621                                 break;
 622                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 623                         ssid->ssid_len = bss->ssid_len;
 624                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 625                                           "scan results",
 626                                           ssid->ssid, ssid->ssid_len);
 627                         count++;
 628                 }
 629
 630                 if (count > 1) {
 631                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 632                                    "for the AP; use wildcard");
 633                         os_free(ssid->ssid);
 634                         ssid->ssid = NULL;
 635                         ssid->ssid_len = 0;
 636                 }
 637         }
 638
 639         return ssid;
 640 }
 641
 642
 643 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 644                              struct wpa_ssid *selected)
 645 {
 646         struct wpa_ssid *ssid;
 647
 648         /* Mark all other networks disabled and trigger reassociation */
 649         ssid = wpa_s->conf->ssid;
 650         while (ssid) {
 651                 int was_disabled = ssid->disabled;
 652                 ssid->disabled = ssid != selected;
 653                 if (was_disabled != ssid->disabled)
 654                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 655                 ssid = ssid->next;
 656         }
 657         wpa_s->disconnected = 0;
 658         wpa_s->reassociate = 1;
 659         wpa_s->scan_runs = 0;
 660         wpa_s->wps_success = 0;
 661         wpa_s->blacklist_cleared = 0;
 662         wpa_supplicant_req_scan(wpa_s, 0, 0);
 663 }
 664
 665
 666 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 667 {
 668         struct wpa_ssid *ssid;
 669         wpas_clear_wps(wpa_s);
 670         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 671         if (ssid == NULL)
 672                 return -1;
 673         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 674         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 675                                wpa_s, NULL);
 676         wpas_wps_reassoc(wpa_s, ssid);
 677         return 0;
 678 }
 679
 680
 681 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 682                        const char *pin)
 683 {
 684         struct wpa_ssid *ssid;
 685         char val[128];
 686         unsigned int rpin = 0;
 687
 688         wpas_clear_wps(wpa_s);
 689         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 690         if (ssid == NULL)
 691                 return -1;
 692         if (pin)
 693                 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
 694         else {
 695                 rpin = wps_generate_pin();
 696                 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
 697         }
 698         wpa_config_set(ssid, "phase1", val, 0);
 699         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 700                                wpa_s, NULL);
 701         wpas_wps_reassoc(wpa_s, ssid);
 702         return rpin;
 703 }
 704
 705
 706 #ifdef CONFIG_WPS_OOB
 707 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 708                        char *path, char *method, char *name)
 709 {
 710         struct wps_context *wps = wpa_s->wps;
 711         struct oob_device_data *oob_dev;
 712
 713         oob_dev = wps_get_oob_device(device_type);
 714         if (oob_dev == NULL)
 715                 return -1;
 716         oob_dev->device_path = path;
 717         oob_dev->device_name = name;
 718         wps->oob_conf.oob_method = wps_get_oob_method(method);
 719
 720         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 721                 /*
 722                  * Use pre-configured DH keys in order to be able to write the
 723                  * key hash into the OOB file.
 724                  */
 725                 wpabuf_free(wps->dh_pubkey);
 726                 wpabuf_free(wps->dh_privkey);
 727                 wps->dh_privkey = NULL;
 728                 wps->dh_pubkey = NULL;
 729                 dh5_free(wps->dh_ctx);
 730                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 731                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 732                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 733                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 734                                    "Diffie-Hellman handshake");
 735                         return -1;
 736                 }
 737         }
 738
 739         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 740                 wpas_clear_wps(wpa_s);
 741
 742         if (wps_process_oob(wps, oob_dev, 0) < 0)
 743                 return -1;
 744
 745         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 746              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 747             wpas_wps_start_pin(wpa_s, NULL,
 748                                wpabuf_head(wps->oob_conf.dev_password)) < 0)
 749                         return -1;
 750
 751         return 0;
 752 }
 753 #endif /* CONFIG_WPS_OOB */
 754
 755
 756 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 757                        const char *pin, struct wps_new_ap_settings *settings)
 758 {
 759         struct wpa_ssid *ssid;
 760         char val[200];
 761         char *pos, *end;
 762         int res;
 763
 764         if (!pin)
 765                 return -1;
 766         wpas_clear_wps(wpa_s);
 767         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 768         if (ssid == NULL)
 769                 return -1;
 770         pos = val;
 771         end = pos + sizeof(val);
 772         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 773         if (res < 0 || res >= end - pos)
 774                 return -1;
 775         pos += res;
 776         if (settings) {
 777                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 778                                   "new_encr=%s new_key=%s",
 779                                   settings->ssid_hex, settings->auth,
 780                                   settings->encr, settings->key_hex);
 781                 if (res < 0 || res >= end - pos)
 782                         return -1;
 783                 pos += res;
 784         }
 785         res = os_snprintf(pos, end - pos, "\"");
 786         if (res < 0 || res >= end - pos)
 787                 return -1;
 788         wpa_config_set(ssid, "phase1", val, 0);
 789         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 790                                wpa_s, NULL);
 791         wpas_wps_reassoc(wpa_s, ssid);
 792         return 0;
 793 }
 794
 795
 796 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 797                                size_t psk_len)
 798 {
 799         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 800                    "STA " MACSTR, MAC2STR(mac_addr));
 801         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 802
 803         /* TODO */
 804
 805         return 0;
 806 }
 807
 808
 809 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 810                                    const struct wps_device_data *dev)
 811 {
 812         char uuid[40], txt[400];
 813         int len;
 814         char devtype[WPS_DEV_TYPE_BUFSIZE];
 815         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 816                 return;
 817         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 818         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 819                           " [%s|%s|%s|%s|%s|%s]",
 820                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 821                           dev->manufacturer, dev->model_name,
 822                           dev->model_number, dev->serial_number,
 823                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 824                                                sizeof(devtype)));
 825         if (len > 0 && len < (int) sizeof(txt))
 826                 wpa_printf(MSG_INFO, "%s", txt);
 827 }
 828
 829
 830 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 831                                     u16 sel_reg_config_methods)
 832 {
 833 #ifdef CONFIG_WPS_ER
 834         struct wpa_supplicant *wpa_s = ctx;
 835
 836         if (wpa_s->wps_er == NULL)
 837                 return;
 838         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 839                            sel_reg_config_methods);
 840 #endif /* CONFIG_WPS_ER */
 841 }
 842
 843
 844 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 845 {
 846         struct wps_context *wps;
 847         struct wps_registrar_config rcfg;
 848
 849         wps = os_zalloc(sizeof(*wps));
 850         if (wps == NULL)
 851                 return -1;
 852
 853         wps->cred_cb = wpa_supplicant_wps_cred;
 854         wps->event_cb = wpa_supplicant_wps_event;
 855         wps->cb_ctx = wpa_s;
 856
 857         wps->dev.device_name = wpa_s->conf->device_name;
 858         wps->dev.manufacturer = wpa_s->conf->manufacturer;
 859         wps->dev.model_name = wpa_s->conf->model_name;
 860         wps->dev.model_number = wpa_s->conf->model_number;
 861         wps->dev.serial_number = wpa_s->conf->serial_number;
 862         wps->config_methods =
 863                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
 864         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
 865             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
 866                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
 867                            "methods are not allowed at the same time");
 868                 os_free(wps);
 869                 return -1;
 870         }
 871         if (wpa_s->conf->device_type &&
 872             wps_dev_type_str2bin(wpa_s->conf->device_type,
 873                                  wps->dev.pri_dev_type) < 0) {
 874                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 875                 os_free(wps);
 876                 return -1;
 877         }
 878         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
 879         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
 880         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 881         if (is_nil_uuid(wpa_s->conf->uuid)) {
 882                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
 883                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 884                             wps->uuid, WPS_UUID_LEN);
 885         } else
 886                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 887
 888         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 889         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 890
 891         os_memset(&rcfg, 0, sizeof(rcfg));
 892         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
 893         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
 894         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
 895         rcfg.cb_ctx = wpa_s;
 896
 897         wps->registrar = wps_registrar_init(wps, &rcfg);
 898         if (wps->registrar == NULL) {
 899                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
 900                 os_free(wps);
 901                 return -1;
 902         }
 903
 904         wpa_s->wps = wps;
 905
 906         return 0;
 907 }
 908
 909
 910 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 911 {
 912         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 913
 914         if (wpa_s->wps == NULL)
 915                 return;
 916
 917 #ifdef CONFIG_WPS_ER
 918         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
 919         wpa_s->wps_er = NULL;
 920 #endif /* CONFIG_WPS_ER */
 921
 922         wps_registrar_deinit(wpa_s->wps->registrar);
 923         wpabuf_free(wpa_s->wps->dh_pubkey);
 924         wpabuf_free(wpa_s->wps->dh_privkey);
 925         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
 926         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
 927         os_free(wpa_s->wps->network_key);
 928         os_free(wpa_s->wps);
 929         wpa_s->wps = NULL;
 930 }
 931
 932
 933 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
 934                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
 935 {
 936         struct wpabuf *wps_ie;
 937
 938         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
 939                 return -1;
 940
 941         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
 942         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
 943                 if (!wps_ie) {
 944                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 945                         return 0;
 946                 }
 947
 948                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
 949                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 950                                    "without active PBC Registrar");
 951                         wpabuf_free(wps_ie);
 952                         return 0;
 953                 }
 954
 955                 /* TODO: overlap detection */
 956                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 957                            "(Active PBC)");
 958                 wpabuf_free(wps_ie);
 959                 return 1;
 960         }
 961
 962         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
 963                 if (!wps_ie) {
 964                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
 965                         return 0;
 966                 }
 967
 968                 /*
 969                  * Start with WPS APs that advertise active PIN Registrar and
 970                  * allow any WPS AP after third scan since some APs do not set
 971                  * Selected Registrar attribute properly when using external
 972                  * Registrar.
 973                  */
 974                 if (!wps_is_selected_pin_registrar(wps_ie)) {
 975                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
 976                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
 977                                            "without active PIN Registrar");
 978                                 wpabuf_free(wps_ie);
 979                                 return 0;
 980                         }
 981                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 982                 } else {
 983                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
 984                                    "(Active PIN)");
 985                 }
 986                 wpabuf_free(wps_ie);
 987                 return 1;
 988         }
 989
 990         if (wps_ie) {
 991                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
 992                 wpabuf_free(wps_ie);
 993                 return 1;
 994         }
 995
 996         return -1;
 997 }
 998
 999
1000 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1001                               struct wpa_ssid *ssid,
1002                               struct wpa_scan_res *bss)
1003 {
1004         struct wpabuf *wps_ie = NULL;
1005         int ret = 0;
1006
1007         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1008                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1009                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1010                         /* allow wildcard SSID for WPS PBC */
1011                         ret = 1;
1012                 }
1013         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1014                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1015                 if (wps_ie &&
1016                     (wps_is_selected_pin_registrar(wps_ie) ||
1017                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1018                         /* allow wildcard SSID for WPS PIN */
1019                         ret = 1;
1020                 }
1021         }
1022
1023         if (!ret && ssid->bssid_set &&
1024             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1025                 /* allow wildcard SSID due to hardcoded BSSID match */
1026                 ret = 1;
1027         }
1028
1029         wpabuf_free(wps_ie);
1030
1031         return ret;
1032 }
1033
1034
1035 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1036                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1037 {
1038         const u8 *sel_uuid, *uuid;
1039         struct wpabuf *wps_ie;
1040         int ret = 0;
1041         struct wpa_bss *bss;
1042
1043         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1044                 return 0;
1045
1046         /* Make sure that only one AP is in active PBC mode */
1047         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1048         if (wps_ie)
1049                 sel_uuid = wps_get_uuid_e(wps_ie);
1050         else
1051                 sel_uuid = NULL;
1052
1053         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1054                 struct wpabuf *ie;
1055                 if (bss == selected)
1056                         continue;
1057                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1058                 if (!ie)
1059                         continue;
1060                 if (!wps_is_selected_pbc_registrar(ie)) {
1061                         wpabuf_free(ie);
1062                         continue;
1063                 }
1064                 uuid = wps_get_uuid_e(ie);
1065                 if (sel_uuid == NULL || uuid == NULL ||
1066                     os_memcmp(sel_uuid, uuid, 16) != 0) {
1067                         ret = 1; /* PBC overlap */
1068                         wpabuf_free(ie);
1069                         break;
1070                 }
1071
1072                 /* TODO: verify that this is reasonable dual-band situation */
1073
1074                 wpabuf_free(ie);
1075         }
1076
1077         wpabuf_free(wps_ie);
1078
1079         return ret;
1080 }
1081
1082
1083 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1084 {
1085         struct wpa_bss *bss;
1086
1087         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1088                 return;
1089
1090         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1091                 struct wpabuf *ie;
1092                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1093                 if (!ie)
1094                         continue;
1095                 if (wps_is_selected_pbc_registrar(ie))
1096                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1097                                      WPS_EVENT_AP_AVAILABLE_PBC);
1098                 else if (wps_is_selected_pin_registrar(ie))
1099                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1100                                      WPS_EVENT_AP_AVAILABLE_PIN);
1101                 else
1102                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1103                                      WPS_EVENT_AP_AVAILABLE);
1104                 wpabuf_free(ie);
1105                 break;
1106         }
1107 }
1108
1109
1110 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1111 {
1112         struct wpa_ssid *ssid;
1113
1114         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1115                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1116                         return 1;
1117         }
1118
1119         return 0;
1120 }
1121
1122
1123 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1124                               char *end)
1125 {
1126         struct wpabuf *wps_ie;
1127         int ret;
1128
1129         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1130         if (wps_ie == NULL)
1131                 return 0;
1132
1133         ret = wps_attr_text(wps_ie, buf, end);
1134         wpabuf_free(wps_ie);
1135         return ret;
1136 }
1137
1138
1139 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1140 {
1141 #ifdef CONFIG_WPS_ER
1142         if (wpa_s->wps_er) {
1143                 wps_er_refresh(wpa_s->wps_er);
1144                 return 0;
1145         }
1146         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1147         if (wpa_s->wps_er == NULL)
1148                 return -1;
1149         return 0;
1150 #else /* CONFIG_WPS_ER */
1151         return 0;
1152 #endif /* CONFIG_WPS_ER */
1153 }
1154
1155
1156 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1157 {
1158 #ifdef CONFIG_WPS_ER
1159         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1160         wpa_s->wps_er = NULL;
1161 #endif /* CONFIG_WPS_ER */
1162         return 0;
1163 }
1164
1165
1166 #ifdef CONFIG_WPS_ER
1167 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
1168                         const char *pin)
1169 {
1170         u8 u[UUID_LEN];
1171         int any = 0;
1172
1173         if (os_strcmp(uuid, "any") == 0)
1174                 any = 1;
1175         else if (uuid_str2bin(uuid, u))
1176                 return -1;
1177         return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
1178                                      (const u8 *) pin, os_strlen(pin), 300);
1179 }
1180
1181
1182 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1183 {
1184         u8 u[UUID_LEN];
1185
1186         if (uuid_str2bin(uuid, u))
1187                 return -1;
1188         return wps_er_pbc(wpa_s->wps_er, u);
1189 }
1190
1191
1192 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1193                       const char *pin)
1194 {
1195         u8 u[UUID_LEN];
1196
1197         if (uuid_str2bin(uuid, u))
1198                 return -1;
1199         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1200                             os_strlen(pin));
1201 }
1202
1203
1204 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1205                        const char *pin, struct wps_new_ap_settings *settings)
1206 {
1207         u8 u[UUID_LEN];
1208         struct wps_credential cred;
1209         size_t len;
1210
1211         if (uuid_str2bin(uuid, u))
1212                 return -1;
1213         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1214             settings->encr == NULL || settings->key_hex == NULL)
1215                 return -1;
1216
1217         os_memset(&cred, 0, sizeof(cred));
1218         len = os_strlen(settings->ssid_hex);
1219         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1220             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1221                 return -1;
1222         cred.ssid_len = len / 2;
1223
1224         len = os_strlen(settings->key_hex);
1225         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1226             hexstr2bin(settings->key_hex, cred.key, len / 2))
1227                 return -1;
1228         cred.key_len = len / 2;
1229
1230         if (os_strcmp(settings->auth, "OPEN") == 0)
1231                 cred.auth_type = WPS_AUTH_OPEN;
1232         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1233                 cred.auth_type = WPS_AUTH_WPAPSK;
1234         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1235                 cred.auth_type = WPS_AUTH_WPA2PSK;
1236         else
1237                 return -1;
1238
1239         if (os_strcmp(settings->encr, "NONE") == 0)
1240                 cred.encr_type = WPS_ENCR_NONE;
1241         else if (os_strcmp(settings->encr, "WEP") == 0)
1242                 cred.encr_type = WPS_ENCR_WEP;
1243         else if (os_strcmp(settings->encr, "TKIP") == 0)
1244                 cred.encr_type = WPS_ENCR_TKIP;
1245         else if (os_strcmp(settings->encr, "CCMP") == 0)
1246                 cred.encr_type = WPS_ENCR_AES;
1247         else
1248                 return -1;
1249
1250         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1251                              os_strlen(pin), &cred);
1252 }
1253
1254
1255 static void wpas_wps_terminate_cb(void *ctx)
1256 {
1257         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1258         eloop_terminate();
1259 }
1260 #endif /* CONFIG_WPS_ER */
1261
1262
1263 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1264 {
1265 #ifdef CONFIG_WPS_ER
1266         if (wpa_s->wps_er) {
1267                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1268                 wpa_s->wps_er = NULL;
1269                 return 1;
1270         }
1271 #endif /* CONFIG_WPS_ER */
1272         return 0;
1273 }
1274
1275
1276 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1277 {
1278         struct wpa_ssid *ssid;
1279
1280         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1281                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1282                         return 1;
1283         }
1284
1285         return 0;
1286 }