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 "ap.h"
  36 #include "p2p/p2p.h"
  37 #include "p2p_supplicant.h"
  38 #include "wps_supplicant.h"
  39
  40
  41 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  42 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  43 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  44
  45 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  46 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  47
  48
  49 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  50 {
  51         if (!wpa_s->wps_success &&
  52             wpa_s->current_ssid &&
  53             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  54                 const u8 *bssid = wpa_s->bssid;
  55                 if (is_zero_ether_addr(bssid))
  56                         bssid = wpa_s->pending_bssid;
  57
  58                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  59                            " did not succeed - continue trying to find "
  60                            "suitable AP", MAC2STR(bssid));
  61                 wpa_blacklist_add(wpa_s, bssid);
  62
  63                 wpa_supplicant_deauthenticate(wpa_s,
  64                                               WLAN_REASON_DEAUTH_LEAVING);
  65                 wpa_s->reassociate = 1;
  66                 wpa_supplicant_req_scan(wpa_s,
  67                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  68                 wpa_s->blacklist_cleared = 0;
  69                 return 1;
  70         }
  71
  72         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  73
  74         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  75             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  76                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  77                            "try to associate with the received credential");
  78                 wpa_supplicant_deauthenticate(wpa_s,
  79                                               WLAN_REASON_DEAUTH_LEAVING);
  80                 wpa_s->after_wps = 5;
  81                 wpa_s->wps_freq = wpa_s->assoc_freq;
  82                 wpa_s->reassociate = 1;
  83                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  84                 return 1;
  85         }
  86
  87         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  88                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  89                            "for external credential processing");
  90                 wpas_clear_wps(wpa_s);
  91                 wpa_supplicant_deauthenticate(wpa_s,
  92                                               WLAN_REASON_DEAUTH_LEAVING);
  93                 return 1;
  94         }
  95
  96         return 0;
  97 }
  98
  99
 100 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 101                                          struct wpa_ssid *ssid,
 102                                          const struct wps_credential *cred)
 103 {
 104         struct wpa_driver_capa capa;
 105         struct wpa_bss *bss;
 106         const u8 *ie;
 107         struct wpa_ie_data adv;
 108         int wpa2 = 0, ccmp = 0;
 109
 110         /*
 111          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 112          * case they are configured for mixed mode operation (WPA+WPA2 and
 113          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 114          * actually supports stronger security and select that if the client
 115          * has support for it, too.
 116          */
 117
 118         if (wpa_drv_get_capa(wpa_s, &capa))
 119                 return; /* Unknown what driver supports */
 120
 121         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 122         if (bss == NULL) {
 123                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 124                            "table - use credential as-is");
 125                 return;
 126         }
 127
 128         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 129
 130         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 131         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 132                 wpa2 = 1;
 133                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 134                         ccmp = 1;
 135         } else {
 136                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 137                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 138                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 139                         ccmp = 1;
 140         }
 141
 142         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 143             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 144                 /*
 145                  * TODO: This could be the initial AP configuration and the
 146                  * Beacon contents could change shortly. Should request a new
 147                  * scan and delay addition of the network until the updated
 148                  * scan results are available.
 149                  */
 150                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 151                            "support - use credential as-is");
 152                 return;
 153         }
 154
 155         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 156             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 157             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 158                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 159                            "based on scan results");
 160                 if (wpa_s->conf->ap_scan == 1)
 161                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 162                 else
 163                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 164         }
 165
 166         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 167             (ssid->proto & WPA_PROTO_WPA) &&
 168             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 169                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 170                            "based on scan results");
 171                 if (wpa_s->conf->ap_scan == 1)
 172                         ssid->proto |= WPA_PROTO_RSN;
 173                 else
 174                         ssid->proto = WPA_PROTO_RSN;
 175         }
 176 }
 177
 178
 179 static int wpa_supplicant_wps_cred(void *ctx,
 180                                    const struct wps_credential *cred)
 181 {
 182         struct wpa_supplicant *wpa_s = ctx;
 183         struct wpa_ssid *ssid = wpa_s->current_ssid;
 184         u8 key_idx = 0;
 185         u16 auth_type;
 186
 187         if ((wpa_s->conf->wps_cred_processing == 1 ||
 188              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 189                 size_t blen = cred->cred_attr_len * 2 + 1;
 190                 char *buf = os_malloc(blen);
 191                 if (buf) {
 192                         wpa_snprintf_hex(buf, blen,
 193                                          cred->cred_attr, cred->cred_attr_len);
 194                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 195                                 WPS_EVENT_CRED_RECEIVED, buf);
 196                         os_free(buf);
 197                 }
 198
 199                 wpas_notify_wps_credential(wpa_s, cred);
 200         } else
 201                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 202
 203         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 204                         cred->cred_attr, cred->cred_attr_len);
 205
 206         if (wpa_s->conf->wps_cred_processing == 1)
 207                 return 0;
 208
 209         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 210         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 211                    cred->auth_type);
 212         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 213         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 214         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 215                         cred->key, cred->key_len);
 216         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 217                    MAC2STR(cred->mac_addr));
 218
 219         auth_type = cred->auth_type;
 220         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 221                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 222                            "auth_type into WPA2PSK");
 223                 auth_type = WPS_AUTH_WPA2PSK;
 224         }
 225
 226         if (auth_type != WPS_AUTH_OPEN &&
 227             auth_type != WPS_AUTH_SHARED &&
 228             auth_type != WPS_AUTH_WPAPSK &&
 229             auth_type != WPS_AUTH_WPA2PSK) {
 230                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 231                            "unsupported authentication type 0x%x",
 232                            auth_type);
 233                 return 0;
 234         }
 235
 236         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 237                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 238                            "on the received credential");
 239                 os_free(ssid->eap.identity);
 240                 ssid->eap.identity = NULL;
 241                 ssid->eap.identity_len = 0;
 242                 os_free(ssid->eap.phase1);
 243                 ssid->eap.phase1 = NULL;
 244                 os_free(ssid->eap.eap_methods);
 245                 ssid->eap.eap_methods = NULL;
 246                 if (!ssid->p2p_group)
 247                         ssid->temporary = 0;
 248         } else {
 249                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 250                            "received credential");
 251                 ssid = wpa_config_add_network(wpa_s->conf);
 252                 if (ssid == NULL)
 253                         return -1;
 254                 wpas_notify_network_added(wpa_s, ssid);
 255         }
 256
 257         wpa_config_set_network_defaults(ssid);
 258
 259         os_free(ssid->ssid);
 260         ssid->ssid = os_malloc(cred->ssid_len);
 261         if (ssid->ssid) {
 262                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 263                 ssid->ssid_len = cred->ssid_len;
 264         }
 265
 266         switch (cred->encr_type) {
 267         case WPS_ENCR_NONE:
 268                 break;
 269         case WPS_ENCR_WEP:
 270                 if (cred->key_len <= 0)
 271                         break;
 272                 if (cred->key_len != 5 && cred->key_len != 13 &&
 273                     cred->key_len != 10 && cred->key_len != 26) {
 274                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 275                                    "%lu", (unsigned long) cred->key_len);
 276                         return -1;
 277                 }
 278                 if (cred->key_idx > NUM_WEP_KEYS) {
 279                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 280                                    cred->key_idx);
 281                         return -1;
 282                 }
 283                 if (cred->key_idx)
 284                         key_idx = cred->key_idx - 1;
 285                 if (cred->key_len == 10 || cred->key_len == 26) {
 286                         if (hexstr2bin((char *) cred->key,
 287                                        ssid->wep_key[key_idx],
 288                                        cred->key_len / 2) < 0) {
 289                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 290                                            "%d", key_idx);
 291                                 return -1;
 292                         }
 293                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 294                 } else {
 295                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 296                                   cred->key_len);
 297                         ssid->wep_key_len[key_idx] = cred->key_len;
 298                 }
 299                 ssid->wep_tx_keyidx = key_idx;
 300                 break;
 301         case WPS_ENCR_TKIP:
 302                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 303                 break;
 304         case WPS_ENCR_AES:
 305                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 306                 break;
 307         }
 308
 309         switch (auth_type) {
 310         case WPS_AUTH_OPEN:
 311                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 312                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 313                 ssid->proto = 0;
 314                 break;
 315         case WPS_AUTH_SHARED:
 316                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 317                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 318                 ssid->proto = 0;
 319                 break;
 320         case WPS_AUTH_WPAPSK:
 321                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 322                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 323                 ssid->proto = WPA_PROTO_WPA;
 324                 break;
 325         case WPS_AUTH_WPA:
 326                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 327                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 328                 ssid->proto = WPA_PROTO_WPA;
 329                 break;
 330         case WPS_AUTH_WPA2:
 331                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 332                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 333                 ssid->proto = WPA_PROTO_RSN;
 334                 break;
 335         case WPS_AUTH_WPA2PSK:
 336                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 337                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 338                 ssid->proto = WPA_PROTO_RSN;
 339                 break;
 340         }
 341
 342         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 343                 if (cred->key_len == 2 * PMK_LEN) {
 344                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 345                                        PMK_LEN)) {
 346                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 347                                            "Key");
 348                                 return -1;
 349                         }
 350                         ssid->psk_set = 1;
 351                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 352                         os_free(ssid->passphrase);
 353                         ssid->passphrase = os_malloc(cred->key_len + 1);
 354                         if (ssid->passphrase == NULL)
 355                                 return -1;
 356                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 357                         ssid->passphrase[cred->key_len] = '\0';
 358                         wpa_config_update_psk(ssid);
 359                 } else {
 360                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 361                                    "length %lu",
 362                                    (unsigned long) cred->key_len);
 363                         return -1;
 364                 }
 365         }
 366
 367         wpas_wps_security_workaround(wpa_s, ssid, cred);
 368
 369 #ifndef CONFIG_NO_CONFIG_WRITE
 370         if (wpa_s->conf->update_config &&
 371             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 372                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 373                 return -1;
 374         }
 375 #endif /* CONFIG_NO_CONFIG_WRITE */
 376
 377         return 0;
 378 }
 379
 380
 381 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 382                                          struct wps_event_m2d *m2d)
 383 {
 384         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 385                 "dev_password_id=%d config_error=%d",
 386                 m2d->dev_password_id, m2d->config_error);
 387         wpas_notify_wps_event_m2d(wpa_s, m2d);
 388 }
 389
 390
 391 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 392                                           struct wps_event_fail *fail)
 393 {
 394         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d",
 395                 fail->msg, fail->config_error);
 396         wpas_clear_wps(wpa_s);
 397         wpas_notify_wps_event_fail(wpa_s, fail);
 398 }
 399
 400
 401 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 402 {
 403         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 404         wpa_s->wps_success = 1;
 405         wpas_notify_wps_event_success(wpa_s);
 406 #ifdef CONFIG_P2P
 407         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 408 #endif /* CONFIG_P2P */
 409 }
 410
 411
 412 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 413                                                struct wps_event_er_ap *ap)
 414 {
 415         char uuid_str[100];
 416         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 417
 418         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 419         if (ap->pri_dev_type)
 420                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 421                                      sizeof(dev_type));
 422         else
 423                 dev_type[0] = '\0';
 424
 425         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 426                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 427                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 428                 ap->friendly_name ? ap->friendly_name : "",
 429                 ap->manufacturer ? ap->manufacturer : "",
 430                 ap->model_description ? ap->model_description : "",
 431                 ap->model_name ? ap->model_name : "",
 432                 ap->manufacturer_url ? ap->manufacturer_url : "",
 433                 ap->model_url ? ap->model_url : "");
 434 }
 435
 436
 437 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 438                                                   struct wps_event_er_ap *ap)
 439 {
 440         char uuid_str[100];
 441         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 442         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 443 }
 444
 445
 446 static void wpa_supplicant_wps_event_er_enrollee_add(
 447         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 448 {
 449         char uuid_str[100];
 450         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 451
 452         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 453         if (enrollee->pri_dev_type)
 454                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 455                                      sizeof(dev_type));
 456         else
 457                 dev_type[0] = '\0';
 458
 459         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 460                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 461                 "|%s|%s|%s|%s|%s|",
 462                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 463                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 464                 enrollee->dev_name ? enrollee->dev_name : "",
 465                 enrollee->manufacturer ? enrollee->manufacturer : "",
 466                 enrollee->model_name ? enrollee->model_name : "",
 467                 enrollee->model_number ? enrollee->model_number : "",
 468                 enrollee->serial_number ? enrollee->serial_number : "");
 469 }
 470
 471
 472 static void wpa_supplicant_wps_event_er_enrollee_remove(
 473         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 474 {
 475         char uuid_str[100];
 476         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 477         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 478                 uuid_str, MAC2STR(enrollee->mac_addr));
 479 }
 480
 481
 482 static void wpa_supplicant_wps_event_er_ap_settings(
 483         struct wpa_supplicant *wpa_s,
 484         struct wps_event_er_ap_settings *ap_settings)
 485 {
 486         char uuid_str[100];
 487         char key_str[65];
 488         const struct wps_credential *cred = ap_settings->cred;
 489
 490         key_str[0] = '\0';
 491         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 492                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 493                         os_memcpy(key_str, cred->key, cred->key_len);
 494                         key_str[cred->key_len] = '\0';
 495                 }
 496         }
 497
 498         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 499         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 500         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 501                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 502                      "key=%s",
 503                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 504                      cred->auth_type, cred->encr_type, key_str);
 505 }
 506
 507
 508 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 509                                      union wps_event_data *data)
 510 {
 511         struct wpa_supplicant *wpa_s = ctx;
 512         switch (event) {
 513         case WPS_EV_M2D:
 514                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 515                 break;
 516         case WPS_EV_FAIL:
 517                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 518                 break;
 519         case WPS_EV_SUCCESS:
 520                 wpa_supplicant_wps_event_success(wpa_s);
 521                 break;
 522         case WPS_EV_PWD_AUTH_FAIL:
 523                 break;
 524         case WPS_EV_PBC_OVERLAP:
 525                 break;
 526         case WPS_EV_PBC_TIMEOUT:
 527                 break;
 528         case WPS_EV_ER_AP_ADD:
 529                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 530                 break;
 531         case WPS_EV_ER_AP_REMOVE:
 532                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 533                 break;
 534         case WPS_EV_ER_ENROLLEE_ADD:
 535                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 536                                                          &data->enrollee);
 537                 break;
 538         case WPS_EV_ER_ENROLLEE_REMOVE:
 539                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 540                                                             &data->enrollee);
 541                 break;
 542         case WPS_EV_ER_AP_SETTINGS:
 543                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 544                                                         &data->ap_settings);
 545                 break;
 546         }
 547 }
 548
 549
 550 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 551 {
 552         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 553             eap_is_wps_pin_enrollee(&ssid->eap))
 554                 return WPS_REQ_ENROLLEE;
 555         else
 556                 return WPS_REQ_REGISTRAR;
 557 }
 558
 559
 560 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 561 {
 562         int id;
 563         struct wpa_ssid *ssid, *remove_ssid = NULL;
 564
 565         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 566
 567         /* Remove any existing WPS network from configuration */
 568         ssid = wpa_s->conf->ssid;
 569         while (ssid) {
 570                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 571                         if (ssid == wpa_s->current_ssid) {
 572                                 wpa_s->current_ssid = NULL;
 573                                 if (ssid != NULL)
 574                                         wpas_notify_network_changed(wpa_s);
 575                         }
 576                         id = ssid->id;
 577                         remove_ssid = ssid;
 578                 } else
 579                         id = -1;
 580                 ssid = ssid->next;
 581                 if (id >= 0) {
 582                         wpas_notify_network_removed(wpa_s, remove_ssid);
 583                         wpa_config_remove_network(wpa_s->conf, id);
 584                 }
 585         }
 586 }
 587
 588
 589 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 590 {
 591         struct wpa_supplicant *wpa_s = eloop_ctx;
 592         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 593                 "out");
 594         wpas_clear_wps(wpa_s);
 595 }
 596
 597
 598 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 599                                               int registrar, const u8 *bssid)
 600 {
 601         struct wpa_ssid *ssid;
 602
 603         ssid = wpa_config_add_network(wpa_s->conf);
 604         if (ssid == NULL)
 605                 return NULL;
 606         wpas_notify_network_added(wpa_s, ssid);
 607         wpa_config_set_network_defaults(ssid);
 608         ssid->temporary = 1;
 609         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 610             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 611             wpa_config_set(ssid, "identity", registrar ?
 612                            "\"" WSC_ID_REGISTRAR "\"" :
 613                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 614                 wpas_notify_network_removed(wpa_s, ssid);
 615                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 616                 return NULL;
 617         }
 618
 619         if (bssid) {
 620 #ifndef CONFIG_P2P
 621                 struct wpa_bss *bss;
 622                 int count = 0;
 623 #endif /* CONFIG_P2P */
 624
 625                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 626                 ssid->bssid_set = 1;
 627
 628                 /*
 629                  * Note: With P2P, the SSID may change at the time the WPS
 630                  * provisioning is started, so better not filter the AP based
 631                  * on the current SSID in the scan results.
 632                  */
 633 #ifndef CONFIG_P2P
 634                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 635                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 636                                 continue;
 637
 638                         os_free(ssid->ssid);
 639                         ssid->ssid = os_malloc(bss->ssid_len);
 640                         if (ssid->ssid == NULL)
 641                                 break;
 642                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 643                         ssid->ssid_len = bss->ssid_len;
 644                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 645                                           "scan results",
 646                                           ssid->ssid, ssid->ssid_len);
 647                         count++;
 648                 }
 649
 650                 if (count > 1) {
 651                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 652                                    "for the AP; use wildcard");
 653                         os_free(ssid->ssid);
 654                         ssid->ssid = NULL;
 655                         ssid->ssid_len = 0;
 656                 }
 657 #endif /* CONFIG_P2P */
 658         }
 659
 660         return ssid;
 661 }
 662
 663
 664 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 665                              struct wpa_ssid *selected)
 666 {
 667         struct wpa_ssid *ssid;
 668
 669         /* Mark all other networks disabled and trigger reassociation */
 670         ssid = wpa_s->conf->ssid;
 671         while (ssid) {
 672                 int was_disabled = ssid->disabled;
 673                 ssid->disabled = ssid != selected;
 674                 if (was_disabled != ssid->disabled)
 675                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 676                 ssid = ssid->next;
 677         }
 678         wpa_s->disconnected = 0;
 679         wpa_s->reassociate = 1;
 680         wpa_s->scan_runs = 0;
 681         wpa_s->wps_success = 0;
 682         wpa_s->blacklist_cleared = 0;
 683         wpa_supplicant_req_scan(wpa_s, 0, 0);
 684 }
 685
 686
 687 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 688                        int p2p_group)
 689 {
 690         struct wpa_ssid *ssid;
 691         wpas_clear_wps(wpa_s);
 692         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 693         if (ssid == NULL)
 694                 return -1;
 695         ssid->temporary = 1;
 696         ssid->p2p_group = p2p_group;
 697 #ifdef CONFIG_P2P
 698         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 699                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 700                 if (ssid->ssid) {
 701                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 702                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 703                                   ssid->ssid_len);
 704                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 705                                           "SSID", ssid->ssid, ssid->ssid_len);
 706                 }
 707         }
 708 #endif /* CONFIG_P2P */
 709         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 710         if (wpa_s->wps_fragment_size)
 711                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 712         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 713                                wpa_s, NULL);
 714         wpas_wps_reassoc(wpa_s, ssid);
 715         return 0;
 716 }
 717
 718
 719 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 720                        const char *pin, int p2p_group, u16 dev_pw_id)
 721 {
 722         struct wpa_ssid *ssid;
 723         char val[128];
 724         unsigned int rpin = 0;
 725
 726         wpas_clear_wps(wpa_s);
 727         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 728         if (ssid == NULL)
 729                 return -1;
 730         ssid->temporary = 1;
 731         ssid->p2p_group = p2p_group;
 732 #ifdef CONFIG_P2P
 733         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 734                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 735                 if (ssid->ssid) {
 736                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 737                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 738                                   ssid->ssid_len);
 739                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 740                                           "SSID", ssid->ssid, ssid->ssid_len);
 741                 }
 742         }
 743 #endif /* CONFIG_P2P */
 744         if (pin)
 745                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 746                             pin, dev_pw_id);
 747         else {
 748                 rpin = wps_generate_pin();
 749                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 750                             rpin, dev_pw_id);
 751         }
 752         wpa_config_set(ssid, "phase1", val, 0);
 753         if (wpa_s->wps_fragment_size)
 754                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 755         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 756                                wpa_s, NULL);
 757         wpas_wps_reassoc(wpa_s, ssid);
 758         return rpin;
 759 }
 760
 761
 762 /* Cancel the wps pbc/pin requests */
 763 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 764 {
 765 #ifdef CONFIG_AP
 766         if (wpa_s->ap_iface) {
 767                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 768                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 769         }
 770 #endif /* CONFIG_AP */
 771
 772         if (wpa_s->wpa_state == WPA_SCANNING) {
 773                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 774                 wpa_supplicant_cancel_scan(wpa_s);
 775                 wpas_clear_wps(wpa_s);
 776         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 777                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 778                            "deauthenticate");
 779                 wpa_supplicant_deauthenticate(wpa_s,
 780                                               WLAN_REASON_DEAUTH_LEAVING);
 781                 wpas_clear_wps(wpa_s);
 782         }
 783
 784         return 0;
 785 }
 786
 787
 788 #ifdef CONFIG_WPS_OOB
 789 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 790                        char *path, char *method, char *name)
 791 {
 792         struct wps_context *wps = wpa_s->wps;
 793         struct oob_device_data *oob_dev;
 794
 795         oob_dev = wps_get_oob_device(device_type);
 796         if (oob_dev == NULL)
 797                 return -1;
 798         oob_dev->device_path = path;
 799         oob_dev->device_name = name;
 800         wps->oob_conf.oob_method = wps_get_oob_method(method);
 801
 802         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 803                 /*
 804                  * Use pre-configured DH keys in order to be able to write the
 805                  * key hash into the OOB file.
 806                  */
 807                 wpabuf_free(wps->dh_pubkey);
 808                 wpabuf_free(wps->dh_privkey);
 809                 wps->dh_privkey = NULL;
 810                 wps->dh_pubkey = NULL;
 811                 dh5_free(wps->dh_ctx);
 812                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 813                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 814                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 815                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 816                                    "Diffie-Hellman handshake");
 817                         return -1;
 818                 }
 819         }
 820
 821         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 822                 wpas_clear_wps(wpa_s);
 823
 824         if (wps_process_oob(wps, oob_dev, 0) < 0)
 825                 return -1;
 826
 827         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 828              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 829             wpas_wps_start_pin(wpa_s, NULL,
 830                                wpabuf_head(wps->oob_conf.dev_password), 0,
 831                                DEV_PW_DEFAULT) < 0)
 832                         return -1;
 833
 834         return 0;
 835 }
 836 #endif /* CONFIG_WPS_OOB */
 837
 838
 839 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 840                        const char *pin, struct wps_new_ap_settings *settings)
 841 {
 842         struct wpa_ssid *ssid;
 843         char val[200];
 844         char *pos, *end;
 845         int res;
 846
 847         if (!pin)
 848                 return -1;
 849         wpas_clear_wps(wpa_s);
 850         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 851         if (ssid == NULL)
 852                 return -1;
 853         ssid->temporary = 1;
 854         pos = val;
 855         end = pos + sizeof(val);
 856         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 857         if (res < 0 || res >= end - pos)
 858                 return -1;
 859         pos += res;
 860         if (settings) {
 861                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 862                                   "new_encr=%s new_key=%s",
 863                                   settings->ssid_hex, settings->auth,
 864                                   settings->encr, settings->key_hex);
 865                 if (res < 0 || res >= end - pos)
 866                         return -1;
 867                 pos += res;
 868         }
 869         res = os_snprintf(pos, end - pos, "\"");
 870         if (res < 0 || res >= end - pos)
 871                 return -1;
 872         wpa_config_set(ssid, "phase1", val, 0);
 873         if (wpa_s->wps_fragment_size)
 874                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 875         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 876                                wpa_s, NULL);
 877         wpas_wps_reassoc(wpa_s, ssid);
 878         return 0;
 879 }
 880
 881
 882 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 883                                size_t psk_len)
 884 {
 885         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 886                    "STA " MACSTR, MAC2STR(mac_addr));
 887         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 888
 889         /* TODO */
 890
 891         return 0;
 892 }
 893
 894
 895 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 896                                    const struct wps_device_data *dev)
 897 {
 898         char uuid[40], txt[400];
 899         int len;
 900         char devtype[WPS_DEV_TYPE_BUFSIZE];
 901         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 902                 return;
 903         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 904         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 905                           " [%s|%s|%s|%s|%s|%s]",
 906                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 907                           dev->manufacturer, dev->model_name,
 908                           dev->model_number, dev->serial_number,
 909                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 910                                                sizeof(devtype)));
 911         if (len > 0 && len < (int) sizeof(txt))
 912                 wpa_printf(MSG_INFO, "%s", txt);
 913 }
 914
 915
 916 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 917                                     u16 sel_reg_config_methods)
 918 {
 919 #ifdef CONFIG_WPS_ER
 920         struct wpa_supplicant *wpa_s = ctx;
 921
 922         if (wpa_s->wps_er == NULL)
 923                 return;
 924         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
 925                    "dev_password_id=%u sel_reg_config_methods=0x%x",
 926                    sel_reg, dev_passwd_id, sel_reg_config_methods);
 927         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 928                            sel_reg_config_methods);
 929 #endif /* CONFIG_WPS_ER */
 930 }
 931
 932
 933 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 934 {
 935         struct wps_context *wps;
 936         struct wps_registrar_config rcfg;
 937
 938         wps = os_zalloc(sizeof(*wps));
 939         if (wps == NULL)
 940                 return -1;
 941
 942         wps->cred_cb = wpa_supplicant_wps_cred;
 943         wps->event_cb = wpa_supplicant_wps_event;
 944         wps->cb_ctx = wpa_s;
 945
 946         wps->dev.device_name = wpa_s->conf->device_name;
 947         wps->dev.manufacturer = wpa_s->conf->manufacturer;
 948         wps->dev.model_name = wpa_s->conf->model_name;
 949         wps->dev.model_number = wpa_s->conf->model_number;
 950         wps->dev.serial_number = wpa_s->conf->serial_number;
 951         wps->config_methods =
 952                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
 953         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
 954             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
 955                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
 956                            "methods are not allowed at the same time");
 957                 os_free(wps);
 958                 return -1;
 959         }
 960         if (wpa_s->conf->device_type &&
 961             wps_dev_type_str2bin(wpa_s->conf->device_type,
 962                                  wps->dev.pri_dev_type) < 0) {
 963                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 964                 os_free(wps);
 965                 return -1;
 966         }
 967         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
 968         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
 969         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 970         if (is_nil_uuid(wpa_s->conf->uuid)) {
 971                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
 972                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 973                             wps->uuid, WPS_UUID_LEN);
 974         } else
 975                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 976
 977         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 978         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 979
 980         os_memset(&rcfg, 0, sizeof(rcfg));
 981         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
 982         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
 983         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
 984         rcfg.cb_ctx = wpa_s;
 985
 986         wps->registrar = wps_registrar_init(wps, &rcfg);
 987         if (wps->registrar == NULL) {
 988                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
 989                 os_free(wps);
 990                 return -1;
 991         }
 992
 993         wpa_s->wps = wps;
 994
 995         return 0;
 996 }
 997
 998
 999 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1000 {
1001         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1002
1003         if (wpa_s->wps == NULL)
1004                 return;
1005
1006 #ifdef CONFIG_WPS_ER
1007         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1008         wpa_s->wps_er = NULL;
1009 #endif /* CONFIG_WPS_ER */
1010
1011         wps_registrar_deinit(wpa_s->wps->registrar);
1012         wpabuf_free(wpa_s->wps->dh_pubkey);
1013         wpabuf_free(wpa_s->wps->dh_privkey);
1014         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1015         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1016         os_free(wpa_s->wps->network_key);
1017         os_free(wpa_s->wps);
1018         wpa_s->wps = NULL;
1019 }
1020
1021
1022 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1023                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1024 {
1025         struct wpabuf *wps_ie;
1026
1027         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1028                 return -1;
1029
1030         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1031         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1032                 if (!wps_ie) {
1033                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1034                         return 0;
1035                 }
1036
1037                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1038                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1039                                    "without active PBC Registrar");
1040                         wpabuf_free(wps_ie);
1041                         return 0;
1042                 }
1043
1044                 /* TODO: overlap detection */
1045                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1046                            "(Active PBC)");
1047                 wpabuf_free(wps_ie);
1048                 return 1;
1049         }
1050
1051         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1052                 if (!wps_ie) {
1053                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1054                         return 0;
1055                 }
1056
1057                 /*
1058                  * Start with WPS APs that advertise our address as an
1059                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1060                  * allow any WPS AP after couple of scans since some APs do not
1061                  * set Selected Registrar attribute properly when using
1062                  * external Registrar.
1063                  */
1064                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1065                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1066                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1067                                            "without active PIN Registrar");
1068                                 wpabuf_free(wps_ie);
1069                                 return 0;
1070                         }
1071                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1072                 } else {
1073                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1074                                    "(Authorized MAC or Active PIN)");
1075                 }
1076                 wpabuf_free(wps_ie);
1077                 return 1;
1078         }
1079
1080         if (wps_ie) {
1081                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1082                 wpabuf_free(wps_ie);
1083                 return 1;
1084         }
1085
1086         return -1;
1087 }
1088
1089
1090 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1091                               struct wpa_ssid *ssid,
1092                               struct wpa_scan_res *bss)
1093 {
1094         struct wpabuf *wps_ie = NULL;
1095         int ret = 0;
1096
1097         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1098                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1099                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1100                         /* allow wildcard SSID for WPS PBC */
1101                         ret = 1;
1102                 }
1103         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1104                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1105                 if (wps_ie &&
1106                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1107                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1108                         /* allow wildcard SSID for WPS PIN */
1109                         ret = 1;
1110                 }
1111         }
1112
1113         if (!ret && ssid->bssid_set &&
1114             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1115                 /* allow wildcard SSID due to hardcoded BSSID match */
1116                 ret = 1;
1117         }
1118
1119 #ifdef CONFIG_WPS_STRICT
1120         if (wps_ie) {
1121                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1122                                                    0, bss->bssid) < 0)
1123                         ret = 0;
1124                 if (bss->beacon_ie_len) {
1125                         struct wpabuf *bcn_wps;
1126                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1127                                 bss, WPS_IE_VENDOR_TYPE);
1128                         if (bcn_wps == NULL) {
1129                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1130                                            "missing from AP Beacon");
1131                                 ret = 0;
1132                         } else {
1133                                 if (wps_validate_beacon(wps_ie) < 0)
1134                                         ret = 0;
1135                                 wpabuf_free(bcn_wps);
1136                         }
1137                 }
1138         }
1139 #endif /* CONFIG_WPS_STRICT */
1140
1141         wpabuf_free(wps_ie);
1142
1143         return ret;
1144 }
1145
1146
1147 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1148                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1149 {
1150         const u8 *sel_uuid, *uuid;
1151         struct wpabuf *wps_ie;
1152         int ret = 0;
1153         struct wpa_bss *bss;
1154
1155         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1156                 return 0;
1157
1158         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1159                    "present in scan results; selected BSSID " MACSTR,
1160                    MAC2STR(selected->bssid));
1161
1162         /* Make sure that only one AP is in active PBC mode */
1163         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1164         if (wps_ie) {
1165                 sel_uuid = wps_get_uuid_e(wps_ie);
1166                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1167                             sel_uuid, UUID_LEN);
1168         } else {
1169                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1170                            "WPS IE?!");
1171                 sel_uuid = NULL;
1172         }
1173
1174         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1175                 struct wpabuf *ie;
1176                 if (bss == selected)
1177                         continue;
1178                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1179                 if (!ie)
1180                         continue;
1181                 if (!wps_is_selected_pbc_registrar(ie)) {
1182                         wpabuf_free(ie);
1183                         continue;
1184                 }
1185                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1186                            MACSTR, MAC2STR(bss->bssid));
1187                 uuid = wps_get_uuid_e(ie);
1188                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1189                             uuid, UUID_LEN);
1190                 if (sel_uuid == NULL || uuid == NULL ||
1191                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1192                         ret = 1; /* PBC overlap */
1193                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1194                                 MACSTR " and " MACSTR,
1195                                 MAC2STR(selected->bssid),
1196                                 MAC2STR(bss->bssid));
1197                         wpabuf_free(ie);
1198                         break;
1199                 }
1200
1201                 /* TODO: verify that this is reasonable dual-band situation */
1202
1203                 wpabuf_free(ie);
1204         }
1205
1206         wpabuf_free(wps_ie);
1207
1208         return ret;
1209 }
1210
1211
1212 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1213 {
1214         struct wpa_bss *bss;
1215
1216         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1217                 return;
1218
1219         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1220                 struct wpabuf *ie;
1221                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1222                 if (!ie)
1223                         continue;
1224                 if (wps_is_selected_pbc_registrar(ie))
1225                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1226                                      WPS_EVENT_AP_AVAILABLE_PBC);
1227                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1228                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1229                                      WPS_EVENT_AP_AVAILABLE_AUTH);
1230                 else if (wps_is_selected_pin_registrar(ie))
1231                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1232                                      WPS_EVENT_AP_AVAILABLE_PIN);
1233                 else
1234                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1235                                      WPS_EVENT_AP_AVAILABLE);
1236                 wpabuf_free(ie);
1237                 break;
1238         }
1239 }
1240
1241
1242 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1243 {
1244         struct wpa_ssid *ssid;
1245
1246         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1247                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1248                         return 1;
1249         }
1250
1251         return 0;
1252 }
1253
1254
1255 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1256                               char *end)
1257 {
1258         struct wpabuf *wps_ie;
1259         int ret;
1260
1261         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1262         if (wps_ie == NULL)
1263                 return 0;
1264
1265         ret = wps_attr_text(wps_ie, buf, end);
1266         wpabuf_free(wps_ie);
1267         return ret;
1268 }
1269
1270
1271 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1272 {
1273 #ifdef CONFIG_WPS_ER
1274         if (wpa_s->wps_er) {
1275                 wps_er_refresh(wpa_s->wps_er);
1276                 return 0;
1277         }
1278         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1279         if (wpa_s->wps_er == NULL)
1280                 return -1;
1281         return 0;
1282 #else /* CONFIG_WPS_ER */
1283         return 0;
1284 #endif /* CONFIG_WPS_ER */
1285 }
1286
1287
1288 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1289 {
1290 #ifdef CONFIG_WPS_ER
1291         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1292         wpa_s->wps_er = NULL;
1293 #endif /* CONFIG_WPS_ER */
1294         return 0;
1295 }
1296
1297
1298 #ifdef CONFIG_WPS_ER
1299 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1300                         const char *uuid, const char *pin)
1301 {
1302         u8 u[UUID_LEN];
1303         int any = 0;
1304
1305         if (os_strcmp(uuid, "any") == 0)
1306                 any = 1;
1307         else if (uuid_str2bin(uuid, u))
1308                 return -1;
1309         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1310                                      any ? NULL : u,
1311                                      (const u8 *) pin, os_strlen(pin), 300);
1312 }
1313
1314
1315 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1316 {
1317         u8 u[UUID_LEN];
1318
1319         if (uuid_str2bin(uuid, u))
1320                 return -1;
1321         return wps_er_pbc(wpa_s->wps_er, u);
1322 }
1323
1324
1325 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1326                       const char *pin)
1327 {
1328         u8 u[UUID_LEN];
1329
1330         if (uuid_str2bin(uuid, u))
1331                 return -1;
1332         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1333                             os_strlen(pin));
1334 }
1335
1336
1337 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1338                        const char *pin, struct wps_new_ap_settings *settings)
1339 {
1340         u8 u[UUID_LEN];
1341         struct wps_credential cred;
1342         size_t len;
1343
1344         if (uuid_str2bin(uuid, u))
1345                 return -1;
1346         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1347             settings->encr == NULL || settings->key_hex == NULL)
1348                 return -1;
1349
1350         os_memset(&cred, 0, sizeof(cred));
1351         len = os_strlen(settings->ssid_hex);
1352         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1353             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1354                 return -1;
1355         cred.ssid_len = len / 2;
1356
1357         len = os_strlen(settings->key_hex);
1358         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1359             hexstr2bin(settings->key_hex, cred.key, len / 2))
1360                 return -1;
1361         cred.key_len = len / 2;
1362
1363         if (os_strcmp(settings->auth, "OPEN") == 0)
1364                 cred.auth_type = WPS_AUTH_OPEN;
1365         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1366                 cred.auth_type = WPS_AUTH_WPAPSK;
1367         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1368                 cred.auth_type = WPS_AUTH_WPA2PSK;
1369         else
1370                 return -1;
1371
1372         if (os_strcmp(settings->encr, "NONE") == 0)
1373                 cred.encr_type = WPS_ENCR_NONE;
1374         else if (os_strcmp(settings->encr, "WEP") == 0)
1375                 cred.encr_type = WPS_ENCR_WEP;
1376         else if (os_strcmp(settings->encr, "TKIP") == 0)
1377                 cred.encr_type = WPS_ENCR_TKIP;
1378         else if (os_strcmp(settings->encr, "CCMP") == 0)
1379                 cred.encr_type = WPS_ENCR_AES;
1380         else
1381                 return -1;
1382
1383         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1384                              os_strlen(pin), &cred);
1385 }
1386
1387
1388 static void wpas_wps_terminate_cb(void *ctx)
1389 {
1390         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1391         eloop_terminate();
1392 }
1393 #endif /* CONFIG_WPS_ER */
1394
1395
1396 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1397 {
1398 #ifdef CONFIG_WPS_ER
1399         if (wpa_s->wps_er) {
1400                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1401                 wpa_s->wps_er = NULL;
1402                 return 1;
1403         }
1404 #endif /* CONFIG_WPS_ER */
1405         return 0;
1406 }
1407
1408
1409 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1410 {
1411         struct wpa_ssid *ssid;
1412
1413         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1414                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1415                         return 1;
1416         }
1417
1418         return 0;
1419 }
1420
1421
1422 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1423 {
1424         struct wps_context *wps = wpa_s->wps;
1425
1426         if (wps == NULL)
1427                 return;
1428
1429         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1430                 wps->config_methods = wps_config_methods_str2bin(
1431                         wpa_s->conf->config_methods);
1432                 if ((wps->config_methods &
1433                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1434                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1435                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1436                                    "config methods are not allowed at the "
1437                                    "same time");
1438                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1439                 }
1440         }
1441
1442         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
1443                 if (wpa_s->conf->device_type &&
1444                     wps_dev_type_str2bin(wpa_s->conf->device_type,
1445                                          wps->dev.pri_dev_type) < 0)
1446                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1447         }
1448
1449         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1450                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1451
1452         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
1453                 if (is_nil_uuid(wpa_s->conf->uuid)) {
1454                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1455                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1456                                     "address", wps->uuid, WPS_UUID_LEN);
1457                 } else
1458                         os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1459         }
1460
1461         if (wpa_s->conf->changed_parameters &
1462             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1463                 /* Update pointers to make sure they refer current values */
1464                 wps->dev.device_name = wpa_s->conf->device_name;
1465                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1466                 wps->dev.model_name = wpa_s->conf->model_name;
1467                 wps->dev.model_number = wpa_s->conf->model_number;
1468                 wps->dev.serial_number = wpa_s->conf->serial_number;
1469         }
1470 }