wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "uuid.h"
  14 #include "crypto/random.h"
  15 #include "crypto/dh_group5.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/ieee802_11_common.h"
  18 #include "common/wpa_common.h"
  19 #include "common/wpa_ctrl.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eap_peer/eap.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "rsn_supp/wpa.h"
  24 #include "wps/wps_attr_parse.h"
  25 #include "config.h"
  26 #include "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "notify.h"
  29 #include "blacklist.h"
  30 #include "bss.h"
  31 #include "scan.h"
  32 #include "ap.h"
  33 #include "p2p/p2p.h"
  34 #include "p2p_supplicant.h"
  35 #include "wps_supplicant.h"
  36
  37
  38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  41
  42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  44
  45
  46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  47 {
  48         os_free(wpa_s->wps_ap);
  49         wpa_s->wps_ap = NULL;
  50         wpa_s->num_wps_ap = 0;
  51         wpa_s->wps_ap_iter = 0;
  52 }
  53
  54
  55 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  56 {
  57 #ifdef CONFIG_P2P
  58         if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
  59                 return 1;
  60 #endif /* CONFIG_P2P */
  61
  62         if (!wpa_s->wps_success &&
  63             wpa_s->current_ssid &&
  64             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  65                 const u8 *bssid = wpa_s->bssid;
  66                 if (is_zero_ether_addr(bssid))
  67                         bssid = wpa_s->pending_bssid;
  68
  69                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  70                            " did not succeed - continue trying to find "
  71                            "suitable AP", MAC2STR(bssid));
  72                 wpa_blacklist_add(wpa_s, bssid);
  73
  74                 wpa_supplicant_deauthenticate(wpa_s,
  75                                               WLAN_REASON_DEAUTH_LEAVING);
  76                 wpa_s->reassociate = 1;
  77                 wpa_supplicant_req_scan(wpa_s,
  78                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  79                 wpa_s->blacklist_cleared = 0;
  80                 return 1;
  81         }
  82
  83         wpas_wps_clear_ap_info(wpa_s);
  84         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  85         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  86                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  87
  88         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  89             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  90                 int disabled = wpa_s->current_ssid->disabled;
  91                 unsigned int freq = wpa_s->assoc_freq;
  92                 struct wpa_bss *bss;
  93                 struct wpa_ssid *ssid = NULL;
  94                 int use_fast_assoc = 0;
  95
  96                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  97                            "try to associate with the received credential "
  98                            "(freq=%u)", freq);
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 if (disabled) {
 102                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
 103                                    "disabled - wait for user to enable");
 104                         return 1;
 105                 }
 106                 wpa_s->after_wps = 5;
 107                 wpa_s->wps_freq = freq;
 108                 wpa_s->normal_scans = 0;
 109                 wpa_s->reassociate = 1;
 110
 111                 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
 112                            "without a new scan can be used");
 113                 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
 114                 if (bss) {
 115                         struct wpabuf *wps;
 116                         struct wps_parse_attr attr;
 117
 118                         wps = wpa_bss_get_vendor_ie_multi(bss,
 119                                                           WPS_IE_VENDOR_TYPE);
 120                         if (wps && wps_parse_msg(wps, &attr) == 0 &&
 121                             attr.wps_state &&
 122                             *attr.wps_state == WPS_STATE_CONFIGURED)
 123                                 use_fast_assoc = 1;
 124                         wpabuf_free(wps);
 125                 }
 126
 127                 if (!use_fast_assoc ||
 128                     wpa_supplicant_fast_associate(wpa_s) != 1)
 129                         wpa_supplicant_req_scan(wpa_s, 0, 0);
 130                 return 1;
 131         }
 132
 133         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 134                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 135                            "for external credential processing");
 136                 wpas_clear_wps(wpa_s);
 137                 wpa_supplicant_deauthenticate(wpa_s,
 138                                               WLAN_REASON_DEAUTH_LEAVING);
 139                 return 1;
 140         }
 141
 142         return 0;
 143 }
 144
 145
 146 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 147                                          struct wpa_ssid *ssid,
 148                                          const struct wps_credential *cred)
 149 {
 150         struct wpa_driver_capa capa;
 151         struct wpa_bss *bss;
 152         const u8 *ie;
 153         struct wpa_ie_data adv;
 154         int wpa2 = 0, ccmp = 0;
 155
 156         /*
 157          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 158          * case they are configured for mixed mode operation (WPA+WPA2 and
 159          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 160          * actually supports stronger security and select that if the client
 161          * has support for it, too.
 162          */
 163
 164         if (wpa_drv_get_capa(wpa_s, &capa))
 165                 return; /* Unknown what driver supports */
 166
 167         if (ssid->ssid == NULL)
 168                 return;
 169         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 170         if (bss == NULL) {
 171                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 172                            "table - use credential as-is");
 173                 return;
 174         }
 175
 176         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 177
 178         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 179         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 180                 wpa2 = 1;
 181                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 182                         ccmp = 1;
 183         } else {
 184                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 185                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 186                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 187                         ccmp = 1;
 188         }
 189
 190         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 191             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 192                 /*
 193                  * TODO: This could be the initial AP configuration and the
 194                  * Beacon contents could change shortly. Should request a new
 195                  * scan and delay addition of the network until the updated
 196                  * scan results are available.
 197                  */
 198                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 199                            "support - use credential as-is");
 200                 return;
 201         }
 202
 203         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 204             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 205             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 206                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 207                            "based on scan results");
 208                 if (wpa_s->conf->ap_scan == 1)
 209                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 210                 else
 211                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 212         }
 213
 214         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 215             (ssid->proto & WPA_PROTO_WPA) &&
 216             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 217                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 218                            "based on scan results");
 219                 if (wpa_s->conf->ap_scan == 1)
 220                         ssid->proto |= WPA_PROTO_RSN;
 221                 else
 222                         ssid->proto = WPA_PROTO_RSN;
 223         }
 224 }
 225
 226
 227 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
 228                                         struct wpa_ssid *new_ssid)
 229 {
 230         struct wpa_ssid *ssid, *next;
 231
 232         for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
 233              ssid = next, next = ssid ? ssid->next : NULL) {
 234                 /*
 235                  * new_ssid has already been added to the list in
 236                  * wpas_wps_add_network(), so skip it.
 237                  */
 238                 if (ssid == new_ssid)
 239                         continue;
 240
 241                 if (ssid->bssid_set || new_ssid->bssid_set) {
 242                         if (ssid->bssid_set != new_ssid->bssid_set)
 243                                 continue;
 244                         if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
 245                             0)
 246                                 continue;
 247                 }
 248
 249                 /* compare SSID */
 250                 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
 251                         continue;
 252
 253                 if (ssid->ssid && new_ssid->ssid) {
 254                         if (os_memcmp(ssid->ssid, new_ssid->ssid,
 255                                       ssid->ssid_len) != 0)
 256                                 continue;
 257                 } else if (ssid->ssid || new_ssid->ssid)
 258                         continue;
 259
 260                 /* compare security parameters */
 261                 if (ssid->auth_alg != new_ssid->auth_alg ||
 262                     ssid->key_mgmt != new_ssid->key_mgmt ||
 263                     ssid->proto != new_ssid->proto ||
 264                     ssid->pairwise_cipher != new_ssid->pairwise_cipher ||
 265                     ssid->group_cipher != new_ssid->group_cipher)
 266                         continue;
 267
 268                 /* Remove the duplicated older network entry. */
 269                 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
 270                 wpas_notify_network_removed(wpa_s, ssid);
 271                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 272         }
 273 }
 274
 275
 276 static int wpa_supplicant_wps_cred(void *ctx,
 277                                    const struct wps_credential *cred)
 278 {
 279         struct wpa_supplicant *wpa_s = ctx;
 280         struct wpa_ssid *ssid = wpa_s->current_ssid;
 281         u16 auth_type;
 282 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 283         int registrar = 0;
 284 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 285
 286         if ((wpa_s->conf->wps_cred_processing == 1 ||
 287              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 288                 size_t blen = cred->cred_attr_len * 2 + 1;
 289                 char *buf = os_malloc(blen);
 290                 if (buf) {
 291                         wpa_snprintf_hex(buf, blen,
 292                                          cred->cred_attr, cred->cred_attr_len);
 293                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 294                                 WPS_EVENT_CRED_RECEIVED, buf);
 295                         os_free(buf);
 296                 }
 297
 298                 wpas_notify_wps_credential(wpa_s, cred);
 299         } else
 300                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 301
 302         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 303                         cred->cred_attr, cred->cred_attr_len);
 304
 305         if (wpa_s->conf->wps_cred_processing == 1)
 306                 return 0;
 307
 308         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 309         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 310                    cred->auth_type);
 311         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 312         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 313         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 314                         cred->key, cred->key_len);
 315         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 316                    MAC2STR(cred->mac_addr));
 317
 318         auth_type = cred->auth_type;
 319         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 320                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 321                            "auth_type into WPA2PSK");
 322                 auth_type = WPS_AUTH_WPA2PSK;
 323         }
 324
 325         if (auth_type != WPS_AUTH_OPEN &&
 326             auth_type != WPS_AUTH_WPAPSK &&
 327             auth_type != WPS_AUTH_WPA2PSK) {
 328                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 329                            "unsupported authentication type 0x%x",
 330                            auth_type);
 331                 return 0;
 332         }
 333
 334         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 335                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 336                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 337                                    "invalid Network Key length %lu",
 338                                    (unsigned long) cred->key_len);
 339                         return -1;
 340                 }
 341         }
 342
 343         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 344                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 345                            "on the received credential");
 346 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 347                 if (ssid->eap.identity &&
 348                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 349                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 350                               WSC_ID_REGISTRAR_LEN) == 0)
 351                         registrar = 1;
 352 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 353                 os_free(ssid->eap.identity);
 354                 ssid->eap.identity = NULL;
 355                 ssid->eap.identity_len = 0;
 356                 os_free(ssid->eap.phase1);
 357                 ssid->eap.phase1 = NULL;
 358                 os_free(ssid->eap.eap_methods);
 359                 ssid->eap.eap_methods = NULL;
 360                 if (!ssid->p2p_group) {
 361                         ssid->temporary = 0;
 362                         ssid->bssid_set = 0;
 363                 }
 364                 ssid->disabled_until.sec = 0;
 365                 ssid->disabled_until.usec = 0;
 366                 ssid->auth_failures = 0;
 367         } else {
 368                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 369                            "received credential");
 370                 ssid = wpa_config_add_network(wpa_s->conf);
 371                 if (ssid == NULL)
 372                         return -1;
 373                 wpas_notify_network_added(wpa_s, ssid);
 374         }
 375
 376         wpa_config_set_network_defaults(ssid);
 377
 378         os_free(ssid->ssid);
 379         ssid->ssid = os_malloc(cred->ssid_len);
 380         if (ssid->ssid) {
 381                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 382                 ssid->ssid_len = cred->ssid_len;
 383         }
 384
 385         switch (cred->encr_type) {
 386         case WPS_ENCR_NONE:
 387                 break;
 388         case WPS_ENCR_TKIP:
 389                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 390                 break;
 391         case WPS_ENCR_AES:
 392                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 393                 break;
 394         }
 395
 396         switch (auth_type) {
 397         case WPS_AUTH_OPEN:
 398                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 399                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 400                 ssid->proto = 0;
 401 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 402                 if (registrar) {
 403                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 404                                 "id=%d - Credentials for an open "
 405                                 "network disabled by default - use "
 406                                 "'select_network %d' to enable",
 407                                 ssid->id, ssid->id);
 408                         ssid->disabled = 1;
 409                 }
 410 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 411                 break;
 412         case WPS_AUTH_WPAPSK:
 413                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 414                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 415                 ssid->proto = WPA_PROTO_WPA;
 416                 break;
 417         case WPS_AUTH_WPA2PSK:
 418                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 419                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 420                 ssid->proto = WPA_PROTO_RSN;
 421                 break;
 422         }
 423
 424         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 425                 if (cred->key_len == 2 * PMK_LEN) {
 426                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 427                                        PMK_LEN)) {
 428                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 429                                            "Key");
 430                                 return -1;
 431                         }
 432                         ssid->psk_set = 1;
 433                         ssid->export_keys = 1;
 434                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 435                         os_free(ssid->passphrase);
 436                         ssid->passphrase = os_malloc(cred->key_len + 1);
 437                         if (ssid->passphrase == NULL)
 438                                 return -1;
 439                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 440                         ssid->passphrase[cred->key_len] = '\0';
 441                         wpa_config_update_psk(ssid);
 442                         ssid->export_keys = 1;
 443                 } else {
 444                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 445                                    "length %lu",
 446                                    (unsigned long) cred->key_len);
 447                         return -1;
 448                 }
 449         }
 450
 451         wpas_wps_security_workaround(wpa_s, ssid, cred);
 452
 453         wpas_wps_remove_dup_network(wpa_s, ssid);
 454
 455 #ifndef CONFIG_NO_CONFIG_WRITE
 456         if (wpa_s->conf->update_config &&
 457             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 458                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 459                 return -1;
 460         }
 461 #endif /* CONFIG_NO_CONFIG_WRITE */
 462
 463         /*
 464          * Optimize the post-WPS scan based on the channel used during
 465          * the provisioning in case EAP-Failure is not received.
 466          */
 467         wpa_s->after_wps = 5;
 468         wpa_s->wps_freq = wpa_s->assoc_freq;
 469
 470         return 0;
 471 }
 472
 473
 474 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 475                                          struct wps_event_m2d *m2d)
 476 {
 477         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 478                 "dev_password_id=%d config_error=%d",
 479                 m2d->dev_password_id, m2d->config_error);
 480         wpas_notify_wps_event_m2d(wpa_s, m2d);
 481 #ifdef CONFIG_P2P
 482         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 483                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 484                         "dev_password_id=%d config_error=%d",
 485                         m2d->dev_password_id, m2d->config_error);
 486         }
 487         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 488                 /*
 489                  * Notify P2P from eloop timeout to avoid issues with the
 490                  * interface getting removed while processing a message.
 491                  */
 492                 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s,
 493                                        NULL);
 494         }
 495 #endif /* CONFIG_P2P */
 496 }
 497
 498
 499 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 500 {
 501         struct wpa_supplicant *wpa_s = eloop_ctx;
 502         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 503         wpas_clear_wps(wpa_s);
 504 }
 505
 506
 507 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 508                                           struct wps_event_fail *fail)
 509 {
 510         if (fail->error_indication > 0 &&
 511             fail->error_indication < NUM_WPS_EI_VALUES) {
 512                 wpa_msg(wpa_s, MSG_INFO,
 513                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 514                         fail->msg, fail->config_error, fail->error_indication,
 515                         wps_ei_str(fail->error_indication));
 516                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 517                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 518                                 "msg=%d config_error=%d reason=%d (%s)",
 519                                 fail->msg, fail->config_error,
 520                                 fail->error_indication,
 521                                 wps_ei_str(fail->error_indication));
 522         } else {
 523                 wpa_msg(wpa_s, MSG_INFO,
 524                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 525                         fail->msg, fail->config_error);
 526                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 527                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 528                                 "msg=%d config_error=%d",
 529                                 fail->msg, fail->config_error);
 530         }
 531
 532         /*
 533          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 534          */
 535         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 536         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 537         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 538
 539         wpas_notify_wps_event_fail(wpa_s, fail);
 540 #ifdef CONFIG_P2P
 541         wpas_p2p_wps_failed(wpa_s, fail);
 542 #endif /* CONFIG_P2P */
 543 }
 544
 545
 546 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 547
 548 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 549 {
 550         struct wpa_ssid *ssid;
 551         int changed = 0;
 552
 553         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 554
 555         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 556                 if (ssid->disabled_for_connect && ssid->disabled) {
 557                         ssid->disabled_for_connect = 0;
 558                         ssid->disabled = 0;
 559                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 560                         changed++;
 561                 }
 562         }
 563
 564         if (changed) {
 565 #ifndef CONFIG_NO_CONFIG_WRITE
 566                 if (wpa_s->conf->update_config &&
 567                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 568                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 569                                    "configuration");
 570                 }
 571 #endif /* CONFIG_NO_CONFIG_WRITE */
 572         }
 573 }
 574
 575
 576 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 577 {
 578         struct wpa_supplicant *wpa_s = eloop_ctx;
 579         /* Enable the networks disabled during wpas_wps_reassoc */
 580         wpas_wps_reenable_networks(wpa_s);
 581 }
 582
 583
 584 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 585 {
 586         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 587         wpa_s->wps_success = 1;
 588         wpas_notify_wps_event_success(wpa_s);
 589         if (wpa_s->current_ssid)
 590                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 591         wpa_s->extra_blacklist_count = 0;
 592
 593         /*
 594          * Enable the networks disabled during wpas_wps_reassoc after 10
 595          * seconds. The 10 seconds timer is to allow the data connection to be
 596          * formed before allowing other networks to be selected.
 597          */
 598         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 599                                NULL);
 600
 601 #ifdef CONFIG_P2P
 602         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 603 #endif /* CONFIG_P2P */
 604 }
 605
 606
 607 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 608                                                struct wps_event_er_ap *ap)
 609 {
 610         char uuid_str[100];
 611         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 612
 613         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 614         if (ap->pri_dev_type)
 615                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 616                                      sizeof(dev_type));
 617         else
 618                 dev_type[0] = '\0';
 619
 620         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 621                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 622                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 623                 ap->friendly_name ? ap->friendly_name : "",
 624                 ap->manufacturer ? ap->manufacturer : "",
 625                 ap->model_description ? ap->model_description : "",
 626                 ap->model_name ? ap->model_name : "",
 627                 ap->manufacturer_url ? ap->manufacturer_url : "",
 628                 ap->model_url ? ap->model_url : "");
 629 }
 630
 631
 632 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 633                                                   struct wps_event_er_ap *ap)
 634 {
 635         char uuid_str[100];
 636         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 637         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 638 }
 639
 640
 641 static void wpa_supplicant_wps_event_er_enrollee_add(
 642         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 643 {
 644         char uuid_str[100];
 645         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 646
 647         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 648         if (enrollee->pri_dev_type)
 649                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 650                                      sizeof(dev_type));
 651         else
 652                 dev_type[0] = '\0';
 653
 654         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 655                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 656                 "|%s|%s|%s|%s|%s|",
 657                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 658                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 659                 enrollee->dev_name ? enrollee->dev_name : "",
 660                 enrollee->manufacturer ? enrollee->manufacturer : "",
 661                 enrollee->model_name ? enrollee->model_name : "",
 662                 enrollee->model_number ? enrollee->model_number : "",
 663                 enrollee->serial_number ? enrollee->serial_number : "");
 664 }
 665
 666
 667 static void wpa_supplicant_wps_event_er_enrollee_remove(
 668         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 669 {
 670         char uuid_str[100];
 671         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 672         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 673                 uuid_str, MAC2STR(enrollee->mac_addr));
 674 }
 675
 676
 677 static void wpa_supplicant_wps_event_er_ap_settings(
 678         struct wpa_supplicant *wpa_s,
 679         struct wps_event_er_ap_settings *ap_settings)
 680 {
 681         char uuid_str[100];
 682         char key_str[65];
 683         const struct wps_credential *cred = ap_settings->cred;
 684
 685         key_str[0] = '\0';
 686         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 687                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 688                         os_memcpy(key_str, cred->key, cred->key_len);
 689                         key_str[cred->key_len] = '\0';
 690                 }
 691         }
 692
 693         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 694         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 695         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 696                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 697                      "key=%s",
 698                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 699                      cred->auth_type, cred->encr_type, key_str);
 700 }
 701
 702
 703 static void wpa_supplicant_wps_event_er_set_sel_reg(
 704         struct wpa_supplicant *wpa_s,
 705         struct wps_event_er_set_selected_registrar *ev)
 706 {
 707         char uuid_str[100];
 708
 709         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 710         switch (ev->state) {
 711         case WPS_ER_SET_SEL_REG_START:
 712                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 713                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 714                         "sel_reg_config_methods=0x%x",
 715                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 716                         ev->sel_reg_config_methods);
 717                 break;
 718         case WPS_ER_SET_SEL_REG_DONE:
 719                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 720                         "uuid=%s state=DONE", uuid_str);
 721                 break;
 722         case WPS_ER_SET_SEL_REG_FAILED:
 723                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 724                         "uuid=%s state=FAILED", uuid_str);
 725                 break;
 726         }
 727 }
 728
 729
 730 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 731                                      union wps_event_data *data)
 732 {
 733         struct wpa_supplicant *wpa_s = ctx;
 734         switch (event) {
 735         case WPS_EV_M2D:
 736                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 737                 break;
 738         case WPS_EV_FAIL:
 739                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 740                 break;
 741         case WPS_EV_SUCCESS:
 742                 wpa_supplicant_wps_event_success(wpa_s);
 743                 break;
 744         case WPS_EV_PWD_AUTH_FAIL:
 745 #ifdef CONFIG_AP
 746                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 747                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 748 #endif /* CONFIG_AP */
 749                 break;
 750         case WPS_EV_PBC_OVERLAP:
 751                 break;
 752         case WPS_EV_PBC_TIMEOUT:
 753                 break;
 754         case WPS_EV_PBC_ACTIVE:
 755                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 756                 break;
 757         case WPS_EV_PBC_DISABLE:
 758                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 759                 break;
 760         case WPS_EV_ER_AP_ADD:
 761                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 762                 break;
 763         case WPS_EV_ER_AP_REMOVE:
 764                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 765                 break;
 766         case WPS_EV_ER_ENROLLEE_ADD:
 767                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 768                                                          &data->enrollee);
 769                 break;
 770         case WPS_EV_ER_ENROLLEE_REMOVE:
 771                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 772                                                             &data->enrollee);
 773                 break;
 774         case WPS_EV_ER_AP_SETTINGS:
 775                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 776                                                         &data->ap_settings);
 777                 break;
 778         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 779                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 780                                                         &data->set_sel_reg);
 781                 break;
 782         case WPS_EV_AP_PIN_SUCCESS:
 783                 break;
 784         }
 785 }
 786
 787
 788 static int wpa_supplicant_wps_rf_band(void *ctx)
 789 {
 790         struct wpa_supplicant *wpa_s = ctx;
 791
 792         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 793                 return 0;
 794
 795         return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 796 }
 797
 798
 799 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 800 {
 801         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 802             eap_is_wps_pin_enrollee(&ssid->eap))
 803                 return WPS_REQ_ENROLLEE;
 804         else
 805                 return WPS_REQ_REGISTRAR;
 806 }
 807
 808
 809 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 810 {
 811         int id;
 812         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 813
 814         wpa_s->after_wps = 0;
 815         wpa_s->known_wps_freq = 0;
 816
 817         prev_current = wpa_s->current_ssid;
 818
 819         /* Enable the networks disabled during wpas_wps_reassoc */
 820         wpas_wps_reenable_networks(wpa_s);
 821
 822         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 823         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 824
 825         /* Remove any existing WPS network from configuration */
 826         ssid = wpa_s->conf->ssid;
 827         while (ssid) {
 828                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 829                         if (ssid == wpa_s->current_ssid) {
 830                                 wpa_supplicant_deauthenticate(
 831                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 832                         }
 833                         id = ssid->id;
 834                         remove_ssid = ssid;
 835                 } else
 836                         id = -1;
 837                 ssid = ssid->next;
 838                 if (id >= 0) {
 839                         if (prev_current == remove_ssid) {
 840                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 841                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 842                                                        NULL);
 843                         }
 844                         wpas_notify_network_removed(wpa_s, remove_ssid);
 845                         wpa_config_remove_network(wpa_s->conf, id);
 846                 }
 847         }
 848
 849         wpas_wps_clear_ap_info(wpa_s);
 850 }
 851
 852
 853 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 854 {
 855         struct wpa_supplicant *wpa_s = eloop_ctx;
 856         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 857                 "out");
 858         wpas_clear_wps(wpa_s);
 859 }
 860
 861
 862 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 863                                               int registrar, const u8 *dev_addr,
 864                                               const u8 *bssid)
 865 {
 866         struct wpa_ssid *ssid;
 867
 868         ssid = wpa_config_add_network(wpa_s->conf);
 869         if (ssid == NULL)
 870                 return NULL;
 871         wpas_notify_network_added(wpa_s, ssid);
 872         wpa_config_set_network_defaults(ssid);
 873         ssid->temporary = 1;
 874         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 875             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 876             wpa_config_set(ssid, "identity", registrar ?
 877                            "\"" WSC_ID_REGISTRAR "\"" :
 878                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 879                 wpas_notify_network_removed(wpa_s, ssid);
 880                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 881                 return NULL;
 882         }
 883
 884 #ifdef CONFIG_P2P
 885         if (dev_addr)
 886                 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
 887 #endif /* CONFIG_P2P */
 888
 889         if (bssid) {
 890 #ifndef CONFIG_P2P
 891                 struct wpa_bss *bss;
 892                 int count = 0;
 893 #endif /* CONFIG_P2P */
 894
 895                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 896                 ssid->bssid_set = 1;
 897
 898                 /*
 899                  * Note: With P2P, the SSID may change at the time the WPS
 900                  * provisioning is started, so better not filter the AP based
 901                  * on the current SSID in the scan results.
 902                  */
 903 #ifndef CONFIG_P2P
 904                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 905                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 906                                 continue;
 907
 908                         os_free(ssid->ssid);
 909                         ssid->ssid = os_malloc(bss->ssid_len);
 910                         if (ssid->ssid == NULL)
 911                                 break;
 912                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 913                         ssid->ssid_len = bss->ssid_len;
 914                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 915                                           "scan results",
 916                                           ssid->ssid, ssid->ssid_len);
 917                         count++;
 918                 }
 919
 920                 if (count > 1) {
 921                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 922                                    "for the AP; use wildcard");
 923                         os_free(ssid->ssid);
 924                         ssid->ssid = NULL;
 925                         ssid->ssid_len = 0;
 926                 }
 927 #endif /* CONFIG_P2P */
 928         }
 929
 930         return ssid;
 931 }
 932
 933
 934 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 935                                   struct wpa_ssid *selected)
 936 {
 937         struct wpa_ssid *ssid;
 938
 939         if (wpa_s->current_ssid)
 940                 wpa_supplicant_deauthenticate(
 941                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 942
 943         /* Mark all other networks disabled and trigger reassociation */
 944         ssid = wpa_s->conf->ssid;
 945         while (ssid) {
 946                 int was_disabled = ssid->disabled;
 947                 ssid->disabled_for_connect = 0;
 948                 /*
 949                  * In case the network object corresponds to a persistent group
 950                  * then do not send out network disabled signal. In addition,
 951                  * do not change disabled status of persistent network objects
 952                  * from 2 to 1 should we connect to another network.
 953                  */
 954                 if (was_disabled != 2) {
 955                         ssid->disabled = ssid != selected;
 956                         if (was_disabled != ssid->disabled) {
 957                                 if (ssid->disabled)
 958                                         ssid->disabled_for_connect = 1;
 959                                 wpas_notify_network_enabled_changed(wpa_s,
 960                                                                     ssid);
 961                         }
 962                 }
 963                 ssid = ssid->next;
 964         }
 965 }
 966
 967
 968 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 969                              struct wpa_ssid *selected, const u8 *bssid,
 970                              int freq)
 971 {
 972         struct wpa_bss *bss;
 973
 974         wpa_s->after_wps = 0;
 975         wpa_s->known_wps_freq = 0;
 976         if (freq) {
 977                 wpa_s->after_wps = 5;
 978                 wpa_s->wps_freq = freq;
 979         } else if (bssid) {
 980                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
 981                 if (bss && bss->freq > 0) {
 982                         wpa_s->known_wps_freq = 1;
 983                         wpa_s->wps_freq = bss->freq;
 984                 }
 985         }
 986
 987         wpas_wps_temp_disable(wpa_s, selected);
 988
 989         wpa_s->disconnected = 0;
 990         wpa_s->reassociate = 1;
 991         wpa_s->scan_runs = 0;
 992         wpa_s->normal_scans = 0;
 993         wpa_s->wps_success = 0;
 994         wpa_s->blacklist_cleared = 0;
 995
 996         wpa_supplicant_cancel_sched_scan(wpa_s);
 997         wpa_supplicant_req_scan(wpa_s, 0, 0);
 998 }
 999
1000
1001 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1002                        int p2p_group)
1003 {
1004         struct wpa_ssid *ssid;
1005         wpas_clear_wps(wpa_s);
1006         ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1007         if (ssid == NULL)
1008                 return -1;
1009         ssid->temporary = 1;
1010         ssid->p2p_group = p2p_group;
1011 #ifdef CONFIG_P2P
1012         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1013                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1014                 if (ssid->ssid) {
1015                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1016                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1017                                   ssid->ssid_len);
1018                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1019                                           "SSID", ssid->ssid, ssid->ssid_len);
1020                 }
1021         }
1022 #endif /* CONFIG_P2P */
1023         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1024                 return -1;
1025         if (wpa_s->wps_fragment_size)
1026                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1027         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1028                                wpa_s, NULL);
1029         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1030         return 0;
1031 }
1032
1033
1034 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1035                                  const u8 *dev_addr, const u8 *bssid,
1036                                  const char *pin, int p2p_group, u16 dev_pw_id,
1037                                  const u8 *peer_pubkey_hash,
1038                                  const u8 *ssid_val, size_t ssid_len, int freq)
1039 {
1040         struct wpa_ssid *ssid;
1041         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1042         unsigned int rpin = 0;
1043         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1044
1045         wpas_clear_wps(wpa_s);
1046         if (bssid && is_zero_ether_addr(bssid))
1047                 bssid = NULL;
1048         ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1049         if (ssid == NULL) {
1050                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1051                 return -1;
1052         }
1053         ssid->temporary = 1;
1054         ssid->p2p_group = p2p_group;
1055         if (ssid_val) {
1056                 ssid->ssid = os_malloc(ssid_len);
1057                 if (ssid->ssid) {
1058                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1059                         ssid->ssid_len = ssid_len;
1060                 }
1061         }
1062         if (peer_pubkey_hash) {
1063                 os_memcpy(hash, " pkhash=", 8);
1064                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1065                                            peer_pubkey_hash,
1066                                            WPS_OOB_PUBKEY_HASH_LEN);
1067         } else {
1068                 hash[0] = '\0';
1069         }
1070 #ifdef CONFIG_P2P
1071         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1072                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1073                 if (ssid->ssid) {
1074                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1075                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1076                                   ssid->ssid_len);
1077                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1078                                           "SSID", ssid->ssid, ssid->ssid_len);
1079                 }
1080         }
1081 #endif /* CONFIG_P2P */
1082         if (pin)
1083                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1084                             pin, dev_pw_id, hash);
1085         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1086                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1087                             dev_pw_id, hash);
1088         } else {
1089                 rpin = wps_generate_pin();
1090                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1091                             rpin, dev_pw_id, hash);
1092         }
1093         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1094                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1095                 return -1;
1096         }
1097         if (wpa_s->wps_fragment_size)
1098                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1099         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1100                                wpa_s, NULL);
1101         wpa_s->wps_ap_iter = 1;
1102         wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1103         return rpin;
1104 }
1105
1106
1107 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1108                        const char *pin, int p2p_group, u16 dev_pw_id)
1109 {
1110         return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1111                                      dev_pw_id, NULL, NULL, 0, 0);
1112 }
1113
1114
1115 /* Cancel the wps pbc/pin requests */
1116 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1117 {
1118 #ifdef CONFIG_AP
1119         if (wpa_s->ap_iface) {
1120                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1121                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1122         }
1123 #endif /* CONFIG_AP */
1124
1125         if (wpa_s->wpa_state == WPA_SCANNING ||
1126             wpa_s->wpa_state == WPA_DISCONNECTED) {
1127                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1128                 wpa_supplicant_cancel_scan(wpa_s);
1129                 wpas_clear_wps(wpa_s);
1130         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1131                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1132                            "deauthenticate");
1133                 wpa_supplicant_deauthenticate(wpa_s,
1134                                               WLAN_REASON_DEAUTH_LEAVING);
1135                 wpas_clear_wps(wpa_s);
1136         } else {
1137                 wpas_wps_reenable_networks(wpa_s);
1138                 wpas_wps_clear_ap_info(wpa_s);
1139                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1140                     0)
1141                         wpas_clear_wps(wpa_s);
1142         }
1143
1144         wpa_s->after_wps = 0;
1145
1146         return 0;
1147 }
1148
1149
1150 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1151                        const char *pin, struct wps_new_ap_settings *settings)
1152 {
1153         struct wpa_ssid *ssid;
1154         char val[200];
1155         char *pos, *end;
1156         int res;
1157
1158         if (!pin)
1159                 return -1;
1160         wpas_clear_wps(wpa_s);
1161         ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1162         if (ssid == NULL)
1163                 return -1;
1164         ssid->temporary = 1;
1165         pos = val;
1166         end = pos + sizeof(val);
1167         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1168         if (res < 0 || res >= end - pos)
1169                 return -1;
1170         pos += res;
1171         if (settings) {
1172                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1173                                   "new_encr=%s new_key=%s",
1174                                   settings->ssid_hex, settings->auth,
1175                                   settings->encr, settings->key_hex);
1176                 if (res < 0 || res >= end - pos)
1177                         return -1;
1178                 pos += res;
1179         }
1180         res = os_snprintf(pos, end - pos, "\"");
1181         if (res < 0 || res >= end - pos)
1182                 return -1;
1183         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1184                 return -1;
1185         if (wpa_s->wps_fragment_size)
1186                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1187         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1188                                wpa_s, NULL);
1189         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1190         return 0;
1191 }
1192
1193
1194 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1195                                const u8 *p2p_dev_addr, const u8 *psk,
1196                                size_t psk_len)
1197 {
1198         if (is_zero_ether_addr(p2p_dev_addr)) {
1199                 wpa_printf(MSG_DEBUG,
1200                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1201                            MAC2STR(mac_addr));
1202         } else {
1203                 wpa_printf(MSG_DEBUG,
1204                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1205                            " P2P Device Addr " MACSTR,
1206                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1207         }
1208         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1209
1210         /* TODO */
1211
1212         return 0;
1213 }
1214
1215
1216 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1217                                    const struct wps_device_data *dev)
1218 {
1219         char uuid[40], txt[400];
1220         int len;
1221         char devtype[WPS_DEV_TYPE_BUFSIZE];
1222         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1223                 return;
1224         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1225         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1226                           " [%s|%s|%s|%s|%s|%s]",
1227                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1228                           dev->manufacturer, dev->model_name,
1229                           dev->model_number, dev->serial_number,
1230                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1231                                                sizeof(devtype)));
1232         if (len > 0 && len < (int) sizeof(txt))
1233                 wpa_printf(MSG_INFO, "%s", txt);
1234 }
1235
1236
1237 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1238                                     u16 sel_reg_config_methods)
1239 {
1240 #ifdef CONFIG_WPS_ER
1241         struct wpa_supplicant *wpa_s = ctx;
1242
1243         if (wpa_s->wps_er == NULL)
1244                 return;
1245         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1246                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1247                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1248         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1249                            sel_reg_config_methods);
1250 #endif /* CONFIG_WPS_ER */
1251 }
1252
1253
1254 static u16 wps_fix_config_methods(u16 config_methods)
1255 {
1256         if ((config_methods &
1257              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1258               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1259                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1260                            "virtual_display for WPS 2.0 compliance");
1261                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1262         }
1263         if ((config_methods &
1264              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1265               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1266                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1267                            "virtual_push_button for WPS 2.0 compliance");
1268                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1269         }
1270
1271         return config_methods;
1272 }
1273
1274
1275 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1276                               struct wps_context *wps)
1277 {
1278         char buf[50];
1279         const char *src;
1280
1281         if (is_nil_uuid(wpa_s->conf->uuid)) {
1282                 struct wpa_supplicant *first;
1283                 first = wpa_s->global->ifaces;
1284                 while (first && first->next)
1285                         first = first->next;
1286                 if (first && first != wpa_s) {
1287                         if (wps != wpa_s->global->ifaces->wps)
1288                                 os_memcpy(wps->uuid,
1289                                           wpa_s->global->ifaces->wps->uuid,
1290                                           WPS_UUID_LEN);
1291                         src = "from the first interface";
1292                 } else {
1293                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1294                         src = "based on MAC address";
1295                 }
1296         } else {
1297                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1298                 src = "based on configuration";
1299         }
1300
1301         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1302         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1303 }
1304
1305
1306 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1307                                        struct wps_context *wps)
1308 {
1309         wpabuf_free(wps->dev.vendor_ext_m1);
1310         wps->dev.vendor_ext_m1 = NULL;
1311
1312         if (wpa_s->conf->wps_vendor_ext_m1) {
1313                 wps->dev.vendor_ext_m1 =
1314                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1315                 if (!wps->dev.vendor_ext_m1) {
1316                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1317                                    "allocate memory for vendor_ext_m1");
1318                 }
1319         }
1320 }
1321
1322
1323 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1324 {
1325         struct wps_context *wps;
1326         struct wps_registrar_config rcfg;
1327         struct hostapd_hw_modes *modes;
1328         u16 m;
1329
1330         wps = os_zalloc(sizeof(*wps));
1331         if (wps == NULL)
1332                 return -1;
1333
1334         wps->cred_cb = wpa_supplicant_wps_cred;
1335         wps->event_cb = wpa_supplicant_wps_event;
1336         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1337         wps->cb_ctx = wpa_s;
1338
1339         wps->dev.device_name = wpa_s->conf->device_name;
1340         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1341         wps->dev.model_name = wpa_s->conf->model_name;
1342         wps->dev.model_number = wpa_s->conf->model_number;
1343         wps->dev.serial_number = wpa_s->conf->serial_number;
1344         wps->config_methods =
1345                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1346         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1347             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1348                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1349                            "methods are not allowed at the same time");
1350                 os_free(wps);
1351                 return -1;
1352         }
1353         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1354         wps->dev.config_methods = wps->config_methods;
1355         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1356                   WPS_DEV_TYPE_LEN);
1357
1358         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1359         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1360                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1361
1362         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1363
1364         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1365         modes = wpa_s->hw.modes;
1366         if (modes) {
1367                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1368                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1369                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1370                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1371                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1372                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1373                 }
1374         }
1375         if (wps->dev.rf_bands == 0) {
1376                 /*
1377                  * Default to claiming support for both bands if the driver
1378                  * does not provide support for fetching supported bands.
1379                  */
1380                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1381         }
1382         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1383         wpas_wps_set_uuid(wpa_s, wps);
1384
1385         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1386         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1387
1388         os_memset(&rcfg, 0, sizeof(rcfg));
1389         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1390         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1391         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1392         rcfg.cb_ctx = wpa_s;
1393
1394         wps->registrar = wps_registrar_init(wps, &rcfg);
1395         if (wps->registrar == NULL) {
1396                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1397                 os_free(wps);
1398                 return -1;
1399         }
1400
1401         wpa_s->wps = wps;
1402
1403         return 0;
1404 }
1405
1406
1407 #ifdef CONFIG_WPS_ER
1408 static void wpas_wps_nfc_clear(struct wps_context *wps)
1409 {
1410         wps->ap_nfc_dev_pw_id = 0;
1411         wpabuf_free(wps->ap_nfc_dh_pubkey);
1412         wps->ap_nfc_dh_pubkey = NULL;
1413         wpabuf_free(wps->ap_nfc_dh_privkey);
1414         wps->ap_nfc_dh_privkey = NULL;
1415         wpabuf_free(wps->ap_nfc_dev_pw);
1416         wps->ap_nfc_dev_pw = NULL;
1417 }
1418 #endif /* CONFIG_WPS_ER */
1419
1420
1421 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1422 {
1423         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1424         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1425         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1426         wpas_wps_clear_ap_info(wpa_s);
1427
1428         if (wpa_s->wps == NULL)
1429                 return;
1430
1431 #ifdef CONFIG_WPS_ER
1432         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1433         wpa_s->wps_er = NULL;
1434         wpas_wps_nfc_clear(wpa_s->wps);
1435 #endif /* CONFIG_WPS_ER */
1436
1437         wps_registrar_deinit(wpa_s->wps->registrar);
1438         wpabuf_free(wpa_s->wps->dh_pubkey);
1439         wpabuf_free(wpa_s->wps->dh_privkey);
1440         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1441         os_free(wpa_s->wps->network_key);
1442         os_free(wpa_s->wps);
1443         wpa_s->wps = NULL;
1444 }
1445
1446
1447 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1448                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1449 {
1450         struct wpabuf *wps_ie;
1451
1452         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1453                 return -1;
1454
1455         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1456         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1457                 if (!wps_ie) {
1458                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1459                         return 0;
1460                 }
1461
1462                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1463                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1464                                    "without active PBC Registrar");
1465                         wpabuf_free(wps_ie);
1466                         return 0;
1467                 }
1468
1469                 /* TODO: overlap detection */
1470                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1471                            "(Active PBC)");
1472                 wpabuf_free(wps_ie);
1473                 return 1;
1474         }
1475
1476         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1477                 if (!wps_ie) {
1478                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1479                         return 0;
1480                 }
1481
1482                 /*
1483                  * Start with WPS APs that advertise our address as an
1484                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1485                  * allow any WPS AP after couple of scans since some APs do not
1486                  * set Selected Registrar attribute properly when using
1487                  * external Registrar.
1488                  */
1489                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1490                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1491                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1492                                            "without active PIN Registrar");
1493                                 wpabuf_free(wps_ie);
1494                                 return 0;
1495                         }
1496                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1497                 } else {
1498                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1499                                    "(Authorized MAC or Active PIN)");
1500                 }
1501                 wpabuf_free(wps_ie);
1502                 return 1;
1503         }
1504
1505         if (wps_ie) {
1506                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1507                 wpabuf_free(wps_ie);
1508                 return 1;
1509         }
1510
1511         return -1;
1512 }
1513
1514
1515 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1516                               struct wpa_ssid *ssid,
1517                               struct wpa_bss *bss)
1518 {
1519         struct wpabuf *wps_ie = NULL;
1520         int ret = 0;
1521
1522         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1523                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1524                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1525                         /* allow wildcard SSID for WPS PBC */
1526                         ret = 1;
1527                 }
1528         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1529                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1530                 if (wps_ie &&
1531                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1532                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1533                         /* allow wildcard SSID for WPS PIN */
1534                         ret = 1;
1535                 }
1536         }
1537
1538         if (!ret && ssid->bssid_set &&
1539             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1540                 /* allow wildcard SSID due to hardcoded BSSID match */
1541                 ret = 1;
1542         }
1543
1544 #ifdef CONFIG_WPS_STRICT
1545         if (wps_ie) {
1546                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1547                                                    0, bss->bssid) < 0)
1548                         ret = 0;
1549                 if (bss->beacon_ie_len) {
1550                         struct wpabuf *bcn_wps;
1551                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1552                                 bss, WPS_IE_VENDOR_TYPE);
1553                         if (bcn_wps == NULL) {
1554                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1555                                            "missing from AP Beacon");
1556                                 ret = 0;
1557                         } else {
1558                                 if (wps_validate_beacon(wps_ie) < 0)
1559                                         ret = 0;
1560                                 wpabuf_free(bcn_wps);
1561                         }
1562                 }
1563         }
1564 #endif /* CONFIG_WPS_STRICT */
1565
1566         wpabuf_free(wps_ie);
1567
1568         return ret;
1569 }
1570
1571
1572 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1573                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1574 {
1575         const u8 *sel_uuid, *uuid;
1576         struct wpabuf *wps_ie;
1577         int ret = 0;
1578         struct wpa_bss *bss;
1579
1580         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1581                 return 0;
1582
1583         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1584                    "present in scan results; selected BSSID " MACSTR,
1585                    MAC2STR(selected->bssid));
1586
1587         /* Make sure that only one AP is in active PBC mode */
1588         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1589         if (wps_ie) {
1590                 sel_uuid = wps_get_uuid_e(wps_ie);
1591                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1592                             sel_uuid, UUID_LEN);
1593         } else {
1594                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1595                            "WPS IE?!");
1596                 sel_uuid = NULL;
1597         }
1598
1599         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1600                 struct wpabuf *ie;
1601                 if (bss == selected)
1602                         continue;
1603                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1604                 if (!ie)
1605                         continue;
1606                 if (!wps_is_selected_pbc_registrar(ie)) {
1607                         wpabuf_free(ie);
1608                         continue;
1609                 }
1610                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1611                            MACSTR, MAC2STR(bss->bssid));
1612                 uuid = wps_get_uuid_e(ie);
1613                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1614                             uuid, UUID_LEN);
1615                 if (sel_uuid == NULL || uuid == NULL ||
1616                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1617                         ret = 1; /* PBC overlap */
1618                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1619                                 MACSTR " and " MACSTR,
1620                                 MAC2STR(selected->bssid),
1621                                 MAC2STR(bss->bssid));
1622                         wpabuf_free(ie);
1623                         break;
1624                 }
1625
1626                 /* TODO: verify that this is reasonable dual-band situation */
1627
1628                 wpabuf_free(ie);
1629         }
1630
1631         wpabuf_free(wps_ie);
1632
1633         return ret;
1634 }
1635
1636
1637 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1638 {
1639         struct wpa_bss *bss;
1640         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1641
1642         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1643                 return;
1644
1645         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1646                 struct wpabuf *ie;
1647                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1648                 if (!ie)
1649                         continue;
1650                 if (wps_is_selected_pbc_registrar(ie))
1651                         pbc++;
1652                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1653                         auth++;
1654                 else if (wps_is_selected_pin_registrar(ie))
1655                         pin++;
1656                 else
1657                         wps++;
1658                 wpabuf_free(ie);
1659         }
1660
1661         if (pbc)
1662                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1663         else if (auth)
1664                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1665         else if (pin)
1666                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1667         else if (wps)
1668                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1669 }
1670
1671
1672 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1673 {
1674         struct wpa_ssid *ssid;
1675
1676         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1677                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1678                         return 1;
1679         }
1680
1681         return 0;
1682 }
1683
1684
1685 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1686                               char *end)
1687 {
1688         struct wpabuf *wps_ie;
1689         int ret;
1690
1691         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1692         if (wps_ie == NULL)
1693                 return 0;
1694
1695         ret = wps_attr_text(wps_ie, buf, end);
1696         wpabuf_free(wps_ie);
1697         return ret;
1698 }
1699
1700
1701 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1702 {
1703 #ifdef CONFIG_WPS_ER
1704         if (wpa_s->wps_er) {
1705                 wps_er_refresh(wpa_s->wps_er);
1706                 return 0;
1707         }
1708         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1709         if (wpa_s->wps_er == NULL)
1710                 return -1;
1711         return 0;
1712 #else /* CONFIG_WPS_ER */
1713         return 0;
1714 #endif /* CONFIG_WPS_ER */
1715 }
1716
1717
1718 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1719 {
1720 #ifdef CONFIG_WPS_ER
1721         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1722         wpa_s->wps_er = NULL;
1723 #endif /* CONFIG_WPS_ER */
1724         return 0;
1725 }
1726
1727
1728 #ifdef CONFIG_WPS_ER
1729 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1730                         const char *uuid, const char *pin)
1731 {
1732         u8 u[UUID_LEN];
1733         const u8 *use_uuid = NULL;
1734         u8 addr_buf[ETH_ALEN];
1735
1736         if (os_strcmp(uuid, "any") == 0) {
1737         } else if (uuid_str2bin(uuid, u) == 0) {
1738                 use_uuid = u;
1739         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1740                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1741                 if (use_uuid == NULL)
1742                         return -1;
1743         } else
1744                 return -1;
1745         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1746                                      use_uuid,
1747                                      (const u8 *) pin, os_strlen(pin), 300);
1748 }
1749
1750
1751 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1752 {
1753         u8 u[UUID_LEN], *use_uuid = NULL;
1754         u8 addr[ETH_ALEN], *use_addr = NULL;
1755
1756         if (uuid_str2bin(uuid, u) == 0)
1757                 use_uuid = u;
1758         else if (hwaddr_aton(uuid, addr) == 0)
1759                 use_addr = addr;
1760         else
1761                 return -1;
1762         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1763 }
1764
1765
1766 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1767                       const char *pin)
1768 {
1769         u8 u[UUID_LEN], *use_uuid = NULL;
1770         u8 addr[ETH_ALEN], *use_addr = NULL;
1771
1772         if (uuid_str2bin(uuid, u) == 0)
1773                 use_uuid = u;
1774         else if (hwaddr_aton(uuid, addr) == 0)
1775                 use_addr = addr;
1776         else
1777                 return -1;
1778
1779         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1780                             os_strlen(pin));
1781 }
1782
1783
1784 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1785                                     struct wps_credential *cred)
1786 {
1787         os_memset(cred, 0, sizeof(*cred));
1788         if (ssid->ssid_len > 32)
1789                 return -1;
1790         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1791         cred->ssid_len = ssid->ssid_len;
1792         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1793                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1794                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1795                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1796                         cred->encr_type = WPS_ENCR_AES;
1797                 else
1798                         cred->encr_type = WPS_ENCR_TKIP;
1799                 if (ssid->passphrase) {
1800                         cred->key_len = os_strlen(ssid->passphrase);
1801                         if (cred->key_len >= 64)
1802                                 return -1;
1803                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1804                 } else if (ssid->psk_set) {
1805                         cred->key_len = 32;
1806                         os_memcpy(cred->key, ssid->psk, 32);
1807                 } else
1808                         return -1;
1809         } else {
1810                 cred->auth_type = WPS_AUTH_OPEN;
1811                 cred->encr_type = WPS_ENCR_NONE;
1812         }
1813
1814         return 0;
1815 }
1816
1817
1818 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1819                            int id)
1820 {
1821         u8 u[UUID_LEN], *use_uuid = NULL;
1822         u8 addr[ETH_ALEN], *use_addr = NULL;
1823         struct wpa_ssid *ssid;
1824         struct wps_credential cred;
1825
1826         if (uuid_str2bin(uuid, u) == 0)
1827                 use_uuid = u;
1828         else if (hwaddr_aton(uuid, addr) == 0)
1829                 use_addr = addr;
1830         else
1831                 return -1;
1832         ssid = wpa_config_get_network(wpa_s->conf, id);
1833         if (ssid == NULL || ssid->ssid == NULL)
1834                 return -1;
1835
1836         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1837                 return -1;
1838         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1839 }
1840
1841
1842 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1843                        const char *pin, struct wps_new_ap_settings *settings)
1844 {
1845         u8 u[UUID_LEN], *use_uuid = NULL;
1846         u8 addr[ETH_ALEN], *use_addr = NULL;
1847         struct wps_credential cred;
1848         size_t len;
1849
1850         if (uuid_str2bin(uuid, u) == 0)
1851                 use_uuid = u;
1852         else if (hwaddr_aton(uuid, addr) == 0)
1853                 use_addr = addr;
1854         else
1855                 return -1;
1856         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1857             settings->encr == NULL || settings->key_hex == NULL)
1858                 return -1;
1859
1860         os_memset(&cred, 0, sizeof(cred));
1861         len = os_strlen(settings->ssid_hex);
1862         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1863             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1864                 return -1;
1865         cred.ssid_len = len / 2;
1866
1867         len = os_strlen(settings->key_hex);
1868         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1869             hexstr2bin(settings->key_hex, cred.key, len / 2))
1870                 return -1;
1871         cred.key_len = len / 2;
1872
1873         if (os_strcmp(settings->auth, "OPEN") == 0)
1874                 cred.auth_type = WPS_AUTH_OPEN;
1875         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1876                 cred.auth_type = WPS_AUTH_WPAPSK;
1877         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1878                 cred.auth_type = WPS_AUTH_WPA2PSK;
1879         else
1880                 return -1;
1881
1882         if (os_strcmp(settings->encr, "NONE") == 0)
1883                 cred.encr_type = WPS_ENCR_NONE;
1884 #ifdef CONFIG_TESTING_OPTIONS
1885         else if (os_strcmp(settings->encr, "WEP") == 0)
1886                 cred.encr_type = WPS_ENCR_WEP;
1887 #endif /* CONFIG_TESTING_OPTIONS */
1888         else if (os_strcmp(settings->encr, "TKIP") == 0)
1889                 cred.encr_type = WPS_ENCR_TKIP;
1890         else if (os_strcmp(settings->encr, "CCMP") == 0)
1891                 cred.encr_type = WPS_ENCR_AES;
1892         else
1893                 return -1;
1894
1895         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1896                              (const u8 *) pin, os_strlen(pin), &cred);
1897 }
1898
1899
1900 #ifdef CONFIG_WPS_NFC
1901 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1902                                              int ndef, const char *uuid)
1903 {
1904         struct wpabuf *ret;
1905         u8 u[UUID_LEN], *use_uuid = NULL;
1906         u8 addr[ETH_ALEN], *use_addr = NULL;
1907
1908         if (!wpa_s->wps_er)
1909                 return NULL;
1910
1911         if (uuid_str2bin(uuid, u) == 0)
1912                 use_uuid = u;
1913         else if (hwaddr_aton(uuid, addr) == 0)
1914                 use_addr = addr;
1915         else
1916                 return NULL;
1917
1918         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1919         if (ndef && ret) {
1920                 struct wpabuf *tmp;
1921                 tmp = ndef_build_wifi(ret);
1922                 wpabuf_free(ret);
1923                 if (tmp == NULL)
1924                         return NULL;
1925                 ret = tmp;
1926         }
1927
1928         return ret;
1929 }
1930 #endif /* CONFIG_WPS_NFC */
1931
1932
1933 static int callbacks_pending = 0;
1934
1935 static void wpas_wps_terminate_cb(void *ctx)
1936 {
1937         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1938         if (--callbacks_pending <= 0)
1939                 eloop_terminate();
1940 }
1941 #endif /* CONFIG_WPS_ER */
1942
1943
1944 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1945 {
1946 #ifdef CONFIG_WPS_ER
1947         if (wpa_s->wps_er) {
1948                 callbacks_pending++;
1949                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1950                 wpa_s->wps_er = NULL;
1951                 return 1;
1952         }
1953 #endif /* CONFIG_WPS_ER */
1954         return 0;
1955 }
1956
1957
1958 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1959 {
1960         struct wps_context *wps = wpa_s->wps;
1961
1962         if (wps == NULL)
1963                 return;
1964
1965         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1966                 wps->config_methods = wps_config_methods_str2bin(
1967                         wpa_s->conf->config_methods);
1968                 if ((wps->config_methods &
1969                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1970                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1971                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1972                                    "config methods are not allowed at the "
1973                                    "same time");
1974                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1975                 }
1976         }
1977         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1978         wps->dev.config_methods = wps->config_methods;
1979
1980         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1981                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1982                           WPS_DEV_TYPE_LEN);
1983
1984         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1985                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1986                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1987                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1988         }
1989
1990         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1991                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1992
1993         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1994                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1995
1996         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1997                 wpas_wps_set_uuid(wpa_s, wps);
1998
1999         if (wpa_s->conf->changed_parameters &
2000             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2001                 /* Update pointers to make sure they refer current values */
2002                 wps->dev.device_name = wpa_s->conf->device_name;
2003                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2004                 wps->dev.model_name = wpa_s->conf->model_name;
2005                 wps->dev.model_number = wpa_s->conf->model_number;
2006                 wps->dev.serial_number = wpa_s->conf->serial_number;
2007         }
2008 }
2009
2010
2011 #ifdef CONFIG_WPS_NFC
2012
2013 #ifdef CONFIG_WPS_ER
2014 static struct wpabuf *
2015 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2016                               struct wpa_ssid *ssid)
2017 {
2018         struct wpabuf *ret;
2019         struct wps_credential cred;
2020
2021         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2022                 return NULL;
2023
2024         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2025
2026         if (ndef && ret) {
2027                 struct wpabuf *tmp;
2028                 tmp = ndef_build_wifi(ret);
2029                 wpabuf_free(ret);
2030                 if (tmp == NULL)
2031                         return NULL;
2032                 ret = tmp;
2033         }
2034
2035         return ret;
2036 }
2037 #endif /* CONFIG_WPS_ER */
2038
2039
2040 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2041                                           int ndef, const char *id_str)
2042 {
2043 #ifdef CONFIG_WPS_ER
2044         if (id_str) {
2045                 int id;
2046                 char *end = NULL;
2047                 struct wpa_ssid *ssid;
2048
2049                 id = strtol(id_str, &end, 10);
2050                 if (end && *end)
2051                         return NULL;
2052
2053                 ssid = wpa_config_get_network(wpa_s->conf, id);
2054                 if (ssid == NULL)
2055                         return NULL;
2056                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2057         }
2058 #endif /* CONFIG_WPS_ER */
2059 #ifdef CONFIG_AP
2060         if (wpa_s->ap_iface)
2061                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2062 #endif /* CONFIG_AP */
2063         return NULL;
2064 }
2065
2066
2067 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2068 {
2069         if (wpa_s->conf->wps_nfc_pw_from_config) {
2070                 return wps_nfc_token_build(ndef,
2071                                            wpa_s->conf->wps_nfc_dev_pw_id,
2072                                            wpa_s->conf->wps_nfc_dh_pubkey,
2073                                            wpa_s->conf->wps_nfc_dev_pw);
2074         }
2075
2076         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2077                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2078                                  &wpa_s->conf->wps_nfc_dh_privkey,
2079                                  &wpa_s->conf->wps_nfc_dev_pw);
2080 }
2081
2082
2083 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2084                        const u8 *bssid,
2085                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2086                        int p2p_group, const u8 *peer_pubkey_hash,
2087                        const u8 *ssid, size_t ssid_len, int freq)
2088 {
2089         struct wps_context *wps = wpa_s->wps;
2090         char pw[32 * 2 + 1];
2091
2092         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2093                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2094                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2095         }
2096
2097         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2098             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2099                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2100                            "cannot start NFC-triggered connection");
2101                 return -1;
2102         }
2103
2104         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2105                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2106                            "cannot start NFC-triggered connection", dev_pw_id);
2107                 return -1;
2108         }
2109
2110         dh5_free(wps->dh_ctx);
2111         wpabuf_free(wps->dh_pubkey);
2112         wpabuf_free(wps->dh_privkey);
2113         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2114         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2115         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2116                 wps->dh_ctx = NULL;
2117                 wpabuf_free(wps->dh_pubkey);
2118                 wps->dh_pubkey = NULL;
2119                 wpabuf_free(wps->dh_privkey);
2120                 wps->dh_privkey = NULL;
2121                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2122                 return -1;
2123         }
2124         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2125         if (wps->dh_ctx == NULL) {
2126                 wpabuf_free(wps->dh_pubkey);
2127                 wps->dh_pubkey = NULL;
2128                 wpabuf_free(wps->dh_privkey);
2129                 wps->dh_privkey = NULL;
2130                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2131                 return -1;
2132         }
2133
2134         if (dev_pw) {
2135                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2136                                            wpabuf_head(dev_pw),
2137                                            wpabuf_len(dev_pw));
2138         }
2139         return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2140                                      dev_pw ? pw : NULL,
2141                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2142                                      ssid, ssid_len, freq);
2143 }
2144
2145
2146 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2147                              struct wps_parse_attr *attr)
2148 {
2149         /*
2150          * Disable existing networks temporarily to allow the newly learned
2151          * credential to be preferred. Enable the temporarily disabled networks
2152          * after 10 seconds.
2153          */
2154         wpas_wps_temp_disable(wpa_s, NULL);
2155         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2156                                NULL);
2157
2158         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2159                 return -1;
2160
2161         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2162                 return 0;
2163
2164         if (attr->ap_channel) {
2165                 u16 chan = WPA_GET_BE16(attr->ap_channel);
2166                 int freq = 0;
2167
2168                 if (chan >= 1 && chan <= 13)
2169                         freq = 2407 + 5 * chan;
2170                 else if (chan == 14)
2171                         freq = 2484;
2172                 else if (chan >= 30)
2173                         freq = 5000 + 5 * chan;
2174
2175                 if (freq) {
2176                         wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2177                                    chan, freq);
2178                         wpa_s->after_wps = 5;
2179                         wpa_s->wps_freq = freq;
2180                 }
2181         }
2182
2183         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2184                    "based on the received credential added");
2185         wpa_s->normal_scans = 0;
2186         wpa_supplicant_reinit_autoscan(wpa_s);
2187         wpa_s->disconnected = 0;
2188         wpa_s->reassociate = 1;
2189
2190         wpa_supplicant_cancel_sched_scan(wpa_s);
2191         wpa_supplicant_req_scan(wpa_s, 0, 0);
2192
2193         return 0;
2194 }
2195
2196
2197 #ifdef CONFIG_WPS_ER
2198 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2199                                            struct wps_parse_attr *attr)
2200 {
2201         return wps_registrar_add_nfc_password_token(
2202                 wpa_s->wps->registrar, attr->oob_dev_password,
2203                 attr->oob_dev_password_len);
2204 }
2205 #endif /* CONFIG_WPS_ER */
2206
2207
2208 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2209                                     const struct wpabuf *wps)
2210 {
2211         struct wps_parse_attr attr;
2212
2213         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2214
2215         if (wps_parse_msg(wps, &attr)) {
2216                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2217                 return -1;
2218         }
2219
2220         if (attr.num_cred)
2221                 return wpas_wps_use_cred(wpa_s, &attr);
2222
2223 #ifdef CONFIG_WPS_ER
2224         if (attr.oob_dev_password)
2225                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2226 #endif /* CONFIG_WPS_ER */
2227
2228         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2229         return -1;
2230 }
2231
2232
2233 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2234                           const struct wpabuf *data, int forced_freq)
2235 {
2236         const struct wpabuf *wps = data;
2237         struct wpabuf *tmp = NULL;
2238         int ret;
2239
2240         if (wpabuf_len(data) < 4)
2241                 return -1;
2242
2243         if (*wpabuf_head_u8(data) != 0x10) {
2244                 /* Assume this contains full NDEF record */
2245                 tmp = ndef_parse_wifi(data);
2246                 if (tmp == NULL) {
2247 #ifdef CONFIG_P2P
2248                         tmp = ndef_parse_p2p(data);
2249                         if (tmp) {
2250                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2251                                                                forced_freq);
2252                                 wpabuf_free(tmp);
2253                                 return ret;
2254                         }
2255 #endif /* CONFIG_P2P */
2256                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2257                         return -1;
2258                 }
2259                 wps = tmp;
2260         }
2261
2262         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2263         wpabuf_free(tmp);
2264         return ret;
2265 }
2266
2267
2268 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2269                                           int ndef)
2270 {
2271         struct wpabuf *ret;
2272
2273         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2274             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2275                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2276                 return NULL;
2277
2278         ret = wps_build_nfc_handover_req(wpa_s->wps,
2279                                          wpa_s->conf->wps_nfc_dh_pubkey);
2280
2281         if (ndef && ret) {
2282                 struct wpabuf *tmp;
2283                 tmp = ndef_build_wifi(ret);
2284                 wpabuf_free(ret);
2285                 if (tmp == NULL)
2286                         return NULL;
2287                 ret = tmp;
2288         }
2289
2290         return ret;
2291 }
2292
2293
2294 #ifdef CONFIG_WPS_NFC
2295
2296 static struct wpabuf *
2297 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2298                              const char *uuid)
2299 {
2300 #ifdef CONFIG_WPS_ER
2301         struct wpabuf *ret;
2302         u8 u[UUID_LEN], *use_uuid = NULL;
2303         u8 addr[ETH_ALEN], *use_addr = NULL;
2304         struct wps_context *wps = wpa_s->wps;
2305
2306         if (wps == NULL)
2307                 return NULL;
2308
2309         if (uuid == NULL)
2310                 return NULL;
2311         if (uuid_str2bin(uuid, u) == 0)
2312                 use_uuid = u;
2313         else if (hwaddr_aton(uuid, addr) == 0)
2314                 use_addr = addr;
2315         else
2316                 return NULL;
2317
2318         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2319                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2320                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2321                         return NULL;
2322         }
2323
2324         wpas_wps_nfc_clear(wps);
2325         wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2326         wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2327         wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2328         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2329                 wpas_wps_nfc_clear(wps);
2330                 return NULL;
2331         }
2332
2333         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2334                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2335         if (ndef && ret) {
2336                 struct wpabuf *tmp;
2337                 tmp = ndef_build_wifi(ret);
2338                 wpabuf_free(ret);
2339                 if (tmp == NULL)
2340                         return NULL;
2341                 ret = tmp;
2342         }
2343
2344         return ret;
2345 #else /* CONFIG_WPS_ER */
2346         return NULL;
2347 #endif /* CONFIG_WPS_ER */
2348 }
2349 #endif /* CONFIG_WPS_NFC */
2350
2351
2352 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2353                                           int ndef, int cr, const char *uuid)
2354 {
2355         struct wpabuf *ret;
2356         if (!cr)
2357                 return NULL;
2358         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2359         if (ret)
2360                 return ret;
2361         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2362 }
2363
2364
2365 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2366                                  const struct wpabuf *data)
2367 {
2368         struct wpabuf *wps;
2369         int ret = -1;
2370         u16 wsc_len;
2371         const u8 *pos;
2372         struct wpabuf msg;
2373         struct wps_parse_attr attr;
2374         u16 dev_pw_id;
2375         const u8 *bssid = NULL;
2376         int freq = 0;
2377
2378         wps = ndef_parse_wifi(data);
2379         if (wps == NULL)
2380                 return -1;
2381         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2382                    "payload from NFC connection handover");
2383         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2384         if (wpabuf_len(wps) < 2) {
2385                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2386                            "Message");
2387                 goto out;
2388         }
2389         pos = wpabuf_head(wps);
2390         wsc_len = WPA_GET_BE16(pos);
2391         if (wsc_len > wpabuf_len(wps) - 2) {
2392                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2393                            "in Wi-Fi Handover Select Message", wsc_len);
2394                 goto out;
2395         }
2396         pos += 2;
2397
2398         wpa_hexdump(MSG_DEBUG,
2399                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2400                     pos, wsc_len);
2401         if (wsc_len < wpabuf_len(wps) - 2) {
2402                 wpa_hexdump(MSG_DEBUG,
2403                             "WPS: Ignore extra data after WSC attributes",
2404                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2405         }
2406
2407         wpabuf_set(&msg, pos, wsc_len);
2408         ret = wps_parse_msg(&msg, &attr);
2409         if (ret < 0) {
2410                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2411                            "Wi-Fi Handover Select Message");
2412                 goto out;
2413         }
2414
2415         if (attr.oob_dev_password == NULL ||
2416             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2417                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2418                            "included in Wi-Fi Handover Select Message");
2419                 ret = -1;
2420                 goto out;
2421         }
2422
2423         if (attr.ssid == NULL) {
2424                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2425                            "Select Message");
2426                 ret = -1;
2427                 goto out;
2428         }
2429
2430         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2431
2432         if (attr.mac_addr) {
2433                 bssid = attr.mac_addr;
2434                 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2435                            MAC2STR(bssid));
2436         }
2437
2438         if (attr.rf_bands)
2439                 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2440
2441         if (attr.ap_channel) {
2442                 u16 chan = WPA_GET_BE16(attr.ap_channel);
2443
2444                 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2445
2446                 if (chan >= 1 && chan <= 13 &&
2447                     (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2448                         freq = 2407 + 5 * chan;
2449                 else if (chan == 14 &&
2450                          (attr.rf_bands == NULL ||
2451                           *attr.rf_bands & WPS_RF_24GHZ))
2452                         freq = 2484;
2453                 else if (chan >= 30 &&
2454                          (attr.rf_bands == NULL ||
2455                           *attr.rf_bands & WPS_RF_50GHZ))
2456                         freq = 5000 + 5 * chan;
2457
2458                 if (freq) {
2459                         wpa_printf(MSG_DEBUG,
2460                                    "WPS: AP indicated channel %u -> %u MHz",
2461                                    chan, freq);
2462                 }
2463         }
2464
2465         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2466                     attr.oob_dev_password, attr.oob_dev_password_len);
2467         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2468                                  WPS_OOB_PUBKEY_HASH_LEN);
2469         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2470                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2471                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2472                 ret = -1;
2473                 goto out;
2474         }
2475         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2476                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2477
2478         ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2479                                  attr.oob_dev_password,
2480                                  attr.ssid, attr.ssid_len, freq);
2481
2482 out:
2483         wpabuf_free(wps);
2484         return ret;
2485 }
2486
2487
2488 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2489                                  const struct wpabuf *req,
2490                                  const struct wpabuf *sel)
2491 {
2492         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2493         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2494         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2495         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2496 }
2497
2498
2499 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2500                                     const struct wpabuf *req,
2501                                     const struct wpabuf *sel)
2502 {
2503         struct wpabuf *wps;
2504         int ret = -1;
2505         u16 wsc_len;
2506         const u8 *pos;
2507         struct wpabuf msg;
2508         struct wps_parse_attr attr;
2509         u16 dev_pw_id;
2510
2511         /*
2512          * Enrollee/station is always initiator of the NFC connection handover,
2513          * so use the request message here to find Enrollee public key hash.
2514          */
2515         wps = ndef_parse_wifi(req);
2516         if (wps == NULL)
2517                 return -1;
2518         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2519                    "payload from NFC connection handover");
2520         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2521         if (wpabuf_len(wps) < 2) {
2522                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2523                            "Message");
2524                 goto out;
2525         }
2526         pos = wpabuf_head(wps);
2527         wsc_len = WPA_GET_BE16(pos);
2528         if (wsc_len > wpabuf_len(wps) - 2) {
2529                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2530                            "in rt Wi-Fi Handover Request Message", wsc_len);
2531                 goto out;
2532         }
2533         pos += 2;
2534
2535         wpa_hexdump(MSG_DEBUG,
2536                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2537                     pos, wsc_len);
2538         if (wsc_len < wpabuf_len(wps) - 2) {
2539                 wpa_hexdump(MSG_DEBUG,
2540                             "WPS: Ignore extra data after WSC attributes",
2541                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2542         }
2543
2544         wpabuf_set(&msg, pos, wsc_len);
2545         ret = wps_parse_msg(&msg, &attr);
2546         if (ret < 0) {
2547                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2548                            "Wi-Fi Handover Request Message");
2549                 goto out;
2550         }
2551
2552         if (attr.oob_dev_password == NULL ||
2553             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2554                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2555                            "included in Wi-Fi Handover Request Message");
2556                 ret = -1;
2557                 goto out;
2558         }
2559
2560         if (attr.uuid_e == NULL) {
2561                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2562                            "Handover Request Message");
2563                 ret = -1;
2564                 goto out;
2565         }
2566
2567         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2568
2569         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2570                     attr.oob_dev_password, attr.oob_dev_password_len);
2571         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2572                                  WPS_OOB_PUBKEY_HASH_LEN);
2573         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2574                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2575                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2576                 ret = -1;
2577                 goto out;
2578         }
2579         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2580                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2581
2582         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2583                                              attr.oob_dev_password,
2584                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2585                                              NULL, 0, 1);
2586
2587 out:
2588         wpabuf_free(wps);
2589         return ret;
2590 }
2591
2592 #endif /* CONFIG_WPS_NFC */
2593
2594
2595 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2596 {
2597         size_t i;
2598         struct os_reltime now;
2599
2600         if (wpa_debug_level > MSG_DEBUG)
2601                 return;
2602
2603         if (wpa_s->wps_ap == NULL)
2604                 return;
2605
2606         os_get_reltime(&now);
2607
2608         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2609                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2610                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2611
2612                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2613                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2614                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2615                            ap->last_attempt.sec > 0 ?
2616                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2617                            e ? e->count : 0);
2618         }
2619 }
2620
2621
2622 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2623                                                  const u8 *bssid)
2624 {
2625         size_t i;
2626
2627         if (wpa_s->wps_ap == NULL)
2628                 return NULL;
2629
2630         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2631                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2632                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2633                         return ap;
2634         }
2635
2636         return NULL;
2637 }
2638
2639
2640 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2641                                         struct wpa_scan_res *res)
2642 {
2643         struct wpabuf *wps;
2644         enum wps_ap_info_type type;
2645         struct wps_ap_info *ap;
2646         int r;
2647
2648         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2649                 return;
2650
2651         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2652         if (wps == NULL)
2653                 return;
2654
2655         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2656         if (r == 2)
2657                 type = WPS_AP_SEL_REG_OUR;
2658         else if (r == 1)
2659                 type = WPS_AP_SEL_REG;
2660         else
2661                 type = WPS_AP_NOT_SEL_REG;
2662
2663         wpabuf_free(wps);
2664
2665         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2666         if (ap) {
2667                 if (ap->type != type) {
2668                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2669                                    " changed type %d -> %d",
2670                                    MAC2STR(res->bssid), ap->type, type);
2671                         ap->type = type;
2672                         if (type != WPS_AP_NOT_SEL_REG)
2673                                 wpa_blacklist_del(wpa_s, ap->bssid);
2674                 }
2675                 return;
2676         }
2677
2678         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2679                               sizeof(struct wps_ap_info));
2680         if (ap == NULL)
2681                 return;
2682
2683         wpa_s->wps_ap = ap;
2684         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2685         wpa_s->num_wps_ap++;
2686
2687         os_memset(ap, 0, sizeof(*ap));
2688         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2689         ap->type = type;
2690         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2691                    MAC2STR(ap->bssid), ap->type);
2692 }
2693
2694
2695 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2696                              struct wpa_scan_results *scan_res)
2697 {
2698         size_t i;
2699
2700         for (i = 0; i < scan_res->num; i++)
2701                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2702
2703         wpas_wps_dump_ap_info(wpa_s);
2704 }
2705
2706
2707 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2708 {
2709         struct wps_ap_info *ap;
2710
2711         wpa_s->after_wps = 0;
2712
2713         if (!wpa_s->wps_ap_iter)
2714                 return;
2715         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2716         if (ap == NULL)
2717                 return;
2718         ap->tries++;
2719         os_get_reltime(&ap->last_attempt);
2720 }