libeap/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 /*
  43  * The minimum time in seconds before trying to associate to a WPS PIN AP that
  44  * does not have Selected Registrar TRUE.
  45  */
  46 #ifndef WPS_PIN_TIME_IGNORE_SEL_REG
  47 #define WPS_PIN_TIME_IGNORE_SEL_REG 5
  48 #endif /* WPS_PIN_TIME_IGNORE_SEL_REG */
  49
  50 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  51 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  52
  53
  54 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  55 {
  56         os_free(wpa_s->wps_ap);
  57         wpa_s->wps_ap = NULL;
  58         wpa_s->num_wps_ap = 0;
  59         wpa_s->wps_ap_iter = 0;
  60 }
  61
  62
  63 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
  64 {
  65         struct wpa_supplicant *wpa_s = eloop_ctx;
  66         int use_fast_assoc = timeout_ctx != NULL;
  67
  68         wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
  69         if (!use_fast_assoc ||
  70             wpa_supplicant_fast_associate(wpa_s) != 1)
  71                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  72 }
  73
  74
  75 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
  76 {
  77         eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0);
  78         eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1);
  79 }
  80
  81
  82 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  83 {
  84         if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
  85                 return 1;
  86
  87         if (!wpa_s->wps_success &&
  88             wpa_s->current_ssid &&
  89             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  90                 const u8 *bssid = wpa_s->bssid;
  91                 if (is_zero_ether_addr(bssid))
  92                         bssid = wpa_s->pending_bssid;
  93
  94                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  95                            " did not succeed - continue trying to find "
  96                            "suitable AP", MAC2STR(bssid));
  97                 wpa_blacklist_add(wpa_s, bssid);
  98
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 wpa_s->reassociate = 1;
 102                 wpa_supplicant_req_scan(wpa_s,
 103                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
 104                 wpa_s->blacklist_cleared = 0;
 105                 return 1;
 106         }
 107
 108         wpas_wps_clear_ap_info(wpa_s);
 109         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 110         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
 111                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
 112
 113         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
 114             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 115                 int disabled = wpa_s->current_ssid->disabled;
 116                 unsigned int freq = wpa_s->assoc_freq;
 117                 struct wpa_bss *bss;
 118                 struct wpa_ssid *ssid = NULL;
 119                 int use_fast_assoc = 0;
 120
 121                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
 122                            "try to associate with the received credential "
 123                            "(freq=%u)", freq);
 124                 wpa_s->own_disconnect_req = 1;
 125                 wpa_supplicant_deauthenticate(wpa_s,
 126                                               WLAN_REASON_DEAUTH_LEAVING);
 127                 if (disabled) {
 128                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
 129                                    "disabled - wait for user to enable");
 130                         return 1;
 131                 }
 132                 wpa_s->after_wps = 5;
 133                 wpa_s->wps_freq = freq;
 134                 wpa_s->normal_scans = 0;
 135                 wpa_s->reassociate = 1;
 136
 137                 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
 138                            "without a new scan can be used");
 139                 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
 140                 if (bss) {
 141                         struct wpabuf *wps;
 142                         struct wps_parse_attr attr;
 143
 144                         wps = wpa_bss_get_vendor_ie_multi(bss,
 145                                                           WPS_IE_VENDOR_TYPE);
 146                         if (wps && wps_parse_msg(wps, &attr) == 0 &&
 147                             attr.wps_state &&
 148                             *attr.wps_state == WPS_STATE_CONFIGURED)
 149                                 use_fast_assoc = 1;
 150                         wpabuf_free(wps);
 151                 }
 152
 153                 /*
 154                  * Complete the next step from an eloop timeout to allow pending
 155                  * driver events related to the disconnection to be processed
 156                  * first. This makes it less likely for disconnection event to
 157                  * cause problems with the following connection.
 158                  */
 159                 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
 160                 wpas_wps_assoc_with_cred_cancel(wpa_s);
 161                 eloop_register_timeout(0, 10000,
 162                                        wpas_wps_assoc_with_cred, wpa_s,
 163                                        use_fast_assoc ? (void *) 1 :
 164                                        (void *) 0);
 165                 return 1;
 166         }
 167
 168         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 169                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 170                            "for external credential processing");
 171                 wpas_clear_wps(wpa_s);
 172                 wpa_s->own_disconnect_req = 1;
 173                 wpa_supplicant_deauthenticate(wpa_s,
 174                                               WLAN_REASON_DEAUTH_LEAVING);
 175                 return 1;
 176         }
 177
 178         return 0;
 179 }
 180
 181
 182 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 183                                          struct wpa_ssid *ssid,
 184                                          const struct wps_credential *cred)
 185 {
 186         struct wpa_driver_capa capa;
 187         struct wpa_bss *bss;
 188         const u8 *ie;
 189         struct wpa_ie_data adv;
 190         int wpa2 = 0, ccmp = 0;
 191
 192         /*
 193          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 194          * case they are configured for mixed mode operation (WPA+WPA2 and
 195          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 196          * actually supports stronger security and select that if the client
 197          * has support for it, too.
 198          */
 199
 200         if (wpa_drv_get_capa(wpa_s, &capa))
 201                 return; /* Unknown what driver supports */
 202
 203         if (ssid->ssid == NULL)
 204                 return;
 205         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 206         if (bss == NULL) {
 207                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 208                            "table - use credential as-is");
 209                 return;
 210         }
 211
 212         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 213
 214         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 215         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 216                 wpa2 = 1;
 217                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 218                         ccmp = 1;
 219         } else {
 220                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 221                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 222                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 223                         ccmp = 1;
 224         }
 225
 226         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 227             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 228                 /*
 229                  * TODO: This could be the initial AP configuration and the
 230                  * Beacon contents could change shortly. Should request a new
 231                  * scan and delay addition of the network until the updated
 232                  * scan results are available.
 233                  */
 234                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 235                            "support - use credential as-is");
 236                 return;
 237         }
 238
 239         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 240             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 241             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 242                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 243                            "based on scan results");
 244                 if (wpa_s->conf->ap_scan == 1)
 245                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 246                 else
 247                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 248         }
 249
 250         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 251             (ssid->proto & WPA_PROTO_WPA) &&
 252             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 253                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 254                            "based on scan results");
 255                 if (wpa_s->conf->ap_scan == 1)
 256                         ssid->proto |= WPA_PROTO_RSN;
 257                 else
 258                         ssid->proto = WPA_PROTO_RSN;
 259         }
 260 }
 261
 262
 263 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
 264                                         struct wpa_ssid *new_ssid)
 265 {
 266         struct wpa_ssid *ssid, *next;
 267
 268         for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
 269              ssid = next, next = ssid ? ssid->next : NULL) {
 270                 /*
 271                  * new_ssid has already been added to the list in
 272                  * wpas_wps_add_network(), so skip it.
 273                  */
 274                 if (ssid == new_ssid)
 275                         continue;
 276
 277                 if (ssid->bssid_set || new_ssid->bssid_set) {
 278                         if (ssid->bssid_set != new_ssid->bssid_set)
 279                                 continue;
 280                         if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
 281                             0)
 282                                 continue;
 283                 }
 284
 285                 /* compare SSID */
 286                 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
 287                         continue;
 288
 289                 if (ssid->ssid && new_ssid->ssid) {
 290                         if (os_memcmp(ssid->ssid, new_ssid->ssid,
 291                                       ssid->ssid_len) != 0)
 292                                 continue;
 293                 } else if (ssid->ssid || new_ssid->ssid)
 294                         continue;
 295
 296                 /* compare security parameters */
 297                 if (ssid->auth_alg != new_ssid->auth_alg ||
 298                     ssid->key_mgmt != new_ssid->key_mgmt ||
 299                     (ssid->group_cipher != new_ssid->group_cipher &&
 300                      !(ssid->group_cipher & new_ssid->group_cipher &
 301                        WPA_CIPHER_CCMP)))
 302                         continue;
 303
 304                 /*
 305                  * Some existing WPS APs will send two creds in case they are
 306                  * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP).
 307                  * Try to merge these two creds if they are received in the same
 308                  * M8 message.
 309                  */
 310                 if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run &&
 311                     wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
 312                         if (new_ssid->passphrase && ssid->passphrase &&
 313                             os_strcmp(new_ssid->passphrase, ssid->passphrase) !=
 314                             0) {
 315                                 wpa_printf(MSG_DEBUG,
 316                                            "WPS: M8 Creds with different passphrase - do not merge");
 317                                 continue;
 318                         }
 319
 320                         if (new_ssid->psk_set &&
 321                             (!ssid->psk_set ||
 322                              os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) {
 323                                 wpa_printf(MSG_DEBUG,
 324                                            "WPS: M8 Creds with different PSK - do not merge");
 325                                 continue;
 326                         }
 327
 328                         if ((new_ssid->passphrase && !ssid->passphrase) ||
 329                             (!new_ssid->passphrase && ssid->passphrase)) {
 330                                 wpa_printf(MSG_DEBUG,
 331                                            "WPS: M8 Creds with different passphrase/PSK type - do not merge");
 332                                 continue;
 333                         }
 334
 335                         wpa_printf(MSG_DEBUG,
 336                                    "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message");
 337                         new_ssid->proto |= ssid->proto;
 338                         new_ssid->pairwise_cipher |= ssid->pairwise_cipher;
 339                 } else {
 340                         /*
 341                          * proto and pairwise_cipher difference matter for
 342                          * non-mixed-mode creds.
 343                          */
 344                         if (ssid->proto != new_ssid->proto ||
 345                             ssid->pairwise_cipher != new_ssid->pairwise_cipher)
 346                                 continue;
 347                 }
 348
 349                 /* Remove the duplicated older network entry. */
 350                 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
 351                 wpas_notify_network_removed(wpa_s, ssid);
 352                 if (wpa_s->current_ssid == ssid)
 353                         wpa_s->current_ssid = NULL;
 354                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 355         }
 356 }
 357
 358
 359 static int wpa_supplicant_wps_cred(void *ctx,
 360                                    const struct wps_credential *cred)
 361 {
 362         struct wpa_supplicant *wpa_s = ctx;
 363         struct wpa_ssid *ssid = wpa_s->current_ssid;
 364         u16 auth_type;
 365 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 366         int registrar = 0;
 367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 368
 369         if ((wpa_s->conf->wps_cred_processing == 1 ||
 370              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 371                 size_t blen = cred->cred_attr_len * 2 + 1;
 372                 char *buf = os_malloc(blen);
 373                 if (buf) {
 374                         wpa_snprintf_hex(buf, blen,
 375                                          cred->cred_attr, cred->cred_attr_len);
 376                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 377                                 WPS_EVENT_CRED_RECEIVED, buf);
 378                         os_free(buf);
 379                 }
 380
 381                 wpas_notify_wps_credential(wpa_s, cred);
 382         } else
 383                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 384
 385         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 386                         cred->cred_attr, cred->cred_attr_len);
 387
 388         if (wpa_s->conf->wps_cred_processing == 1)
 389                 return 0;
 390
 391         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 392         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 393                    cred->auth_type);
 394         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 395         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 396         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 397                         cred->key, cred->key_len);
 398         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 399                    MAC2STR(cred->mac_addr));
 400
 401         auth_type = cred->auth_type;
 402         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 403                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 404                            "auth_type into WPA2PSK");
 405                 auth_type = WPS_AUTH_WPA2PSK;
 406         }
 407
 408         if (auth_type != WPS_AUTH_OPEN &&
 409             auth_type != WPS_AUTH_WPAPSK &&
 410             auth_type != WPS_AUTH_WPA2PSK) {
 411                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 412                            "unsupported authentication type 0x%x",
 413                            auth_type);
 414                 return 0;
 415         }
 416
 417         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 418                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 419                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 420                                    "invalid Network Key length %lu",
 421                                    (unsigned long) cred->key_len);
 422                         return -1;
 423                 }
 424         }
 425
 426         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 427                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 428                            "on the received credential");
 429 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 430                 if (ssid->eap.identity &&
 431                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 432                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 433                               WSC_ID_REGISTRAR_LEN) == 0)
 434                         registrar = 1;
 435 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 436                 os_free(ssid->eap.identity);
 437                 ssid->eap.identity = NULL;
 438                 ssid->eap.identity_len = 0;
 439                 os_free(ssid->eap.phase1);
 440                 ssid->eap.phase1 = NULL;
 441                 os_free(ssid->eap.eap_methods);
 442                 ssid->eap.eap_methods = NULL;
 443                 if (!ssid->p2p_group) {
 444                         ssid->temporary = 0;
 445                         ssid->bssid_set = 0;
 446                 }
 447                 ssid->disabled_until.sec = 0;
 448                 ssid->disabled_until.usec = 0;
 449                 ssid->auth_failures = 0;
 450         } else {
 451                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 452                            "received credential");
 453                 ssid = wpa_config_add_network(wpa_s->conf);
 454                 if (ssid == NULL)
 455                         return -1;
 456                 if (wpa_s->current_ssid) {
 457                         /*
 458                          * Should the GO issue multiple credentials for some
 459                          * reason, each credential should be marked as a
 460                          * temporary P2P group similarly to the one that gets
 461                          * marked as such based on the pre-configured values
 462                          * used for the WPS network block.
 463                          */
 464                         ssid->p2p_group = wpa_s->current_ssid->p2p_group;
 465                         ssid->temporary = wpa_s->current_ssid->temporary;
 466                 }
 467                 wpas_notify_network_added(wpa_s, ssid);
 468         }
 469
 470         wpa_config_set_network_defaults(ssid);
 471         ssid->wps_run = wpa_s->wps_run;
 472
 473         os_free(ssid->ssid);
 474         ssid->ssid = os_malloc(cred->ssid_len);
 475         if (ssid->ssid) {
 476                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 477                 ssid->ssid_len = cred->ssid_len;
 478         }
 479
 480         switch (cred->encr_type) {
 481         case WPS_ENCR_NONE:
 482                 break;
 483         case WPS_ENCR_TKIP:
 484                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 485                 break;
 486         case WPS_ENCR_AES:
 487                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 488                 if (wpa_s->drv_capa_known &&
 489                     (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) {
 490                         ssid->pairwise_cipher |= WPA_CIPHER_GCMP;
 491                         ssid->group_cipher |= WPA_CIPHER_GCMP;
 492                 }
 493                 break;
 494         }
 495
 496         switch (auth_type) {
 497         case WPS_AUTH_OPEN:
 498                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 499                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 500                 ssid->proto = 0;
 501 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 502                 if (registrar) {
 503                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 504                                 "id=%d - Credentials for an open "
 505                                 "network disabled by default - use "
 506                                 "'select_network %d' to enable",
 507                                 ssid->id, ssid->id);
 508                         ssid->disabled = 1;
 509                 }
 510 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 511                 break;
 512         case WPS_AUTH_WPAPSK:
 513                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 514                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 515                 ssid->proto = WPA_PROTO_WPA;
 516                 break;
 517         case WPS_AUTH_WPA2PSK:
 518                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 519                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 520                 ssid->proto = WPA_PROTO_RSN;
 521                 break;
 522         }
 523
 524         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 525                 if (cred->key_len == 2 * PMK_LEN) {
 526                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 527                                        PMK_LEN)) {
 528                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 529                                            "Key");
 530                                 return -1;
 531                         }
 532                         ssid->psk_set = 1;
 533                         ssid->export_keys = 1;
 534                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 535                         os_free(ssid->passphrase);
 536                         ssid->passphrase = os_malloc(cred->key_len + 1);
 537                         if (ssid->passphrase == NULL)
 538                                 return -1;
 539                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 540                         ssid->passphrase[cred->key_len] = '\0';
 541                         wpa_config_update_psk(ssid);
 542                         ssid->export_keys = 1;
 543                 } else {
 544                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 545                                    "length %lu",
 546                                    (unsigned long) cred->key_len);
 547                         return -1;
 548                 }
 549         }
 550         ssid->priority = wpa_s->conf->wps_priority;
 551
 552         wpas_wps_security_workaround(wpa_s, ssid, cred);
 553
 554         wpas_wps_remove_dup_network(wpa_s, ssid);
 555
 556 #ifndef CONFIG_NO_CONFIG_WRITE
 557         if (wpa_s->conf->update_config &&
 558             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 559                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 560                 return -1;
 561         }
 562 #endif /* CONFIG_NO_CONFIG_WRITE */
 563
 564         if (ssid->priority)
 565                 wpa_config_update_prio_list(wpa_s->conf);
 566
 567         /*
 568          * Optimize the post-WPS scan based on the channel used during
 569          * the provisioning in case EAP-Failure is not received.
 570          */
 571         wpa_s->after_wps = 5;
 572         wpa_s->wps_freq = wpa_s->assoc_freq;
 573
 574         return 0;
 575 }
 576
 577
 578 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 579                                          struct wps_event_m2d *m2d)
 580 {
 581         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 582                 "dev_password_id=%d config_error=%d",
 583                 m2d->dev_password_id, m2d->config_error);
 584         wpas_notify_wps_event_m2d(wpa_s, m2d);
 585 #ifdef CONFIG_P2P
 586         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 587                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 588                         "dev_password_id=%d config_error=%d",
 589                         m2d->dev_password_id, m2d->config_error);
 590         }
 591         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 592                 /*
 593                  * Notify P2P from eloop timeout to avoid issues with the
 594                  * interface getting removed while processing a message.
 595                  */
 596                 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s,
 597                                        NULL);
 598         }
 599 #endif /* CONFIG_P2P */
 600 }
 601
 602
 603 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 604 {
 605         struct wpa_supplicant *wpa_s = eloop_ctx;
 606         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 607         wpas_clear_wps(wpa_s);
 608 }
 609
 610
 611 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 612                                           struct wps_event_fail *fail)
 613 {
 614         if (fail->error_indication > 0 &&
 615             fail->error_indication < NUM_WPS_EI_VALUES) {
 616                 wpa_msg(wpa_s, MSG_INFO,
 617                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 618                         fail->msg, fail->config_error, fail->error_indication,
 619                         wps_ei_str(fail->error_indication));
 620                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 621                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 622                                 "msg=%d config_error=%d reason=%d (%s)",
 623                                 fail->msg, fail->config_error,
 624                                 fail->error_indication,
 625                                 wps_ei_str(fail->error_indication));
 626         } else {
 627                 wpa_msg(wpa_s, MSG_INFO,
 628                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 629                         fail->msg, fail->config_error);
 630                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 631                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 632                                 "msg=%d config_error=%d",
 633                                 fail->msg, fail->config_error);
 634         }
 635
 636         /*
 637          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 638          */
 639         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 640         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 641         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 642
 643         wpas_notify_wps_event_fail(wpa_s, fail);
 644         wpas_p2p_wps_failed(wpa_s, fail);
 645 }
 646
 647
 648 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 649
 650 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 651 {
 652         struct wpa_ssid *ssid;
 653         int changed = 0;
 654
 655         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 656
 657         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 658                 if (ssid->disabled_for_connect && ssid->disabled) {
 659                         ssid->disabled_for_connect = 0;
 660                         ssid->disabled = 0;
 661                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 662                         changed++;
 663                 }
 664         }
 665
 666         if (changed) {
 667 #ifndef CONFIG_NO_CONFIG_WRITE
 668                 if (wpa_s->conf->update_config &&
 669                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 670                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 671                                    "configuration");
 672                 }
 673 #endif /* CONFIG_NO_CONFIG_WRITE */
 674         }
 675 }
 676
 677
 678 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 679 {
 680         struct wpa_supplicant *wpa_s = eloop_ctx;
 681         /* Enable the networks disabled during wpas_wps_reassoc */
 682         wpas_wps_reenable_networks(wpa_s);
 683 }
 684
 685
 686 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 687 {
 688         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 689         wpa_s->wps_success = 1;
 690         wpas_notify_wps_event_success(wpa_s);
 691         if (wpa_s->current_ssid)
 692                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 693         wpa_s->extra_blacklist_count = 0;
 694
 695         /*
 696          * Enable the networks disabled during wpas_wps_reassoc after 10
 697          * seconds. The 10 seconds timer is to allow the data connection to be
 698          * formed before allowing other networks to be selected.
 699          */
 700         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 701                                NULL);
 702
 703         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 704 }
 705
 706
 707 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 708                                                struct wps_event_er_ap *ap)
 709 {
 710         char uuid_str[100];
 711         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 712
 713         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 714         if (ap->pri_dev_type)
 715                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 716                                      sizeof(dev_type));
 717         else
 718                 dev_type[0] = '\0';
 719
 720         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 721                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 722                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 723                 ap->friendly_name ? ap->friendly_name : "",
 724                 ap->manufacturer ? ap->manufacturer : "",
 725                 ap->model_description ? ap->model_description : "",
 726                 ap->model_name ? ap->model_name : "",
 727                 ap->manufacturer_url ? ap->manufacturer_url : "",
 728                 ap->model_url ? ap->model_url : "");
 729 }
 730
 731
 732 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 733                                                   struct wps_event_er_ap *ap)
 734 {
 735         char uuid_str[100];
 736         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 737         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 738 }
 739
 740
 741 static void wpa_supplicant_wps_event_er_enrollee_add(
 742         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 743 {
 744         char uuid_str[100];
 745         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 746
 747         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 748         if (enrollee->pri_dev_type)
 749                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 750                                      sizeof(dev_type));
 751         else
 752                 dev_type[0] = '\0';
 753
 754         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 755                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 756                 "|%s|%s|%s|%s|%s|",
 757                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 758                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 759                 enrollee->dev_name ? enrollee->dev_name : "",
 760                 enrollee->manufacturer ? enrollee->manufacturer : "",
 761                 enrollee->model_name ? enrollee->model_name : "",
 762                 enrollee->model_number ? enrollee->model_number : "",
 763                 enrollee->serial_number ? enrollee->serial_number : "");
 764 }
 765
 766
 767 static void wpa_supplicant_wps_event_er_enrollee_remove(
 768         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 769 {
 770         char uuid_str[100];
 771         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 772         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 773                 uuid_str, MAC2STR(enrollee->mac_addr));
 774 }
 775
 776
 777 static void wpa_supplicant_wps_event_er_ap_settings(
 778         struct wpa_supplicant *wpa_s,
 779         struct wps_event_er_ap_settings *ap_settings)
 780 {
 781         char uuid_str[100];
 782         char key_str[65];
 783         const struct wps_credential *cred = ap_settings->cred;
 784
 785         key_str[0] = '\0';
 786         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 787                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 788                         os_memcpy(key_str, cred->key, cred->key_len);
 789                         key_str[cred->key_len] = '\0';
 790                 }
 791         }
 792
 793         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 794         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 795         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 796                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 797                      "key=%s",
 798                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 799                      cred->auth_type, cred->encr_type, key_str);
 800 }
 801
 802
 803 static void wpa_supplicant_wps_event_er_set_sel_reg(
 804         struct wpa_supplicant *wpa_s,
 805         struct wps_event_er_set_selected_registrar *ev)
 806 {
 807         char uuid_str[100];
 808
 809         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 810         switch (ev->state) {
 811         case WPS_ER_SET_SEL_REG_START:
 812                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 813                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 814                         "sel_reg_config_methods=0x%x",
 815                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 816                         ev->sel_reg_config_methods);
 817                 break;
 818         case WPS_ER_SET_SEL_REG_DONE:
 819                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 820                         "uuid=%s state=DONE", uuid_str);
 821                 break;
 822         case WPS_ER_SET_SEL_REG_FAILED:
 823                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 824                         "uuid=%s state=FAILED", uuid_str);
 825                 break;
 826         }
 827 }
 828
 829
 830 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 831                                      union wps_event_data *data)
 832 {
 833         struct wpa_supplicant *wpa_s = ctx;
 834         switch (event) {
 835         case WPS_EV_M2D:
 836                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 837                 break;
 838         case WPS_EV_FAIL:
 839                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 840                 break;
 841         case WPS_EV_SUCCESS:
 842                 wpa_supplicant_wps_event_success(wpa_s);
 843                 break;
 844         case WPS_EV_PWD_AUTH_FAIL:
 845 #ifdef CONFIG_AP
 846                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 847                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 848 #endif /* CONFIG_AP */
 849                 break;
 850         case WPS_EV_PBC_OVERLAP:
 851                 break;
 852         case WPS_EV_PBC_TIMEOUT:
 853                 break;
 854         case WPS_EV_PBC_ACTIVE:
 855                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 856                 break;
 857         case WPS_EV_PBC_DISABLE:
 858                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 859                 break;
 860         case WPS_EV_ER_AP_ADD:
 861                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 862                 break;
 863         case WPS_EV_ER_AP_REMOVE:
 864                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 865                 break;
 866         case WPS_EV_ER_ENROLLEE_ADD:
 867                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 868                                                          &data->enrollee);
 869                 break;
 870         case WPS_EV_ER_ENROLLEE_REMOVE:
 871                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 872                                                             &data->enrollee);
 873                 break;
 874         case WPS_EV_ER_AP_SETTINGS:
 875                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 876                                                         &data->ap_settings);
 877                 break;
 878         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 879                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 880                                                         &data->set_sel_reg);
 881                 break;
 882         case WPS_EV_AP_PIN_SUCCESS:
 883                 break;
 884         }
 885 }
 886
 887
 888 static int wpa_supplicant_wps_rf_band(void *ctx)
 889 {
 890         struct wpa_supplicant *wpa_s = ctx;
 891
 892         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 893                 return 0;
 894
 895         return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ :
 896                 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 897 }
 898
 899
 900 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 901 {
 902         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 903             eap_is_wps_pin_enrollee(&ssid->eap))
 904                 return WPS_REQ_ENROLLEE;
 905         else
 906                 return WPS_REQ_REGISTRAR;
 907 }
 908
 909
 910 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 911 {
 912         int id;
 913         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 914
 915         wpa_s->after_wps = 0;
 916         wpa_s->known_wps_freq = 0;
 917
 918         prev_current = wpa_s->current_ssid;
 919
 920         /* Enable the networks disabled during wpas_wps_reassoc */
 921         wpas_wps_reenable_networks(wpa_s);
 922
 923         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 924         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 925
 926         /* Remove any existing WPS network from configuration */
 927         ssid = wpa_s->conf->ssid;
 928         while (ssid) {
 929                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 930                         if (ssid == wpa_s->current_ssid) {
 931                                 wpa_s->own_disconnect_req = 1;
 932                                 wpa_supplicant_deauthenticate(
 933                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 934                         }
 935                         id = ssid->id;
 936                         remove_ssid = ssid;
 937                 } else
 938                         id = -1;
 939                 ssid = ssid->next;
 940                 if (id >= 0) {
 941                         if (prev_current == remove_ssid) {
 942                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 943                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 944                                                        NULL);
 945                         }
 946                         wpas_notify_network_removed(wpa_s, remove_ssid);
 947                         wpa_config_remove_network(wpa_s->conf, id);
 948                 }
 949         }
 950
 951         wpas_wps_clear_ap_info(wpa_s);
 952 }
 953
 954
 955 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 956 {
 957         struct wpa_supplicant *wpa_s = eloop_ctx;
 958         union wps_event_data data;
 959
 960         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 961                 "out");
 962         os_memset(&data, 0, sizeof(data));
 963         data.fail.config_error = WPS_CFG_MSG_TIMEOUT;
 964         data.fail.error_indication = WPS_EI_NO_ERROR;
 965         /*
 966          * Call wpas_notify_wps_event_fail() directly instead of through
 967          * wpa_supplicant_wps_event() which would end up registering unnecessary
 968          * timeouts (those are only for the case where the failure happens
 969          * during an EAP-WSC exchange).
 970          */
 971         wpas_notify_wps_event_fail(wpa_s, &data.fail);
 972         wpas_clear_wps(wpa_s);
 973 }
 974
 975
 976 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 977                                               int registrar, const u8 *dev_addr,
 978                                               const u8 *bssid)
 979 {
 980         struct wpa_ssid *ssid;
 981
 982         ssid = wpa_config_add_network(wpa_s->conf);
 983         if (ssid == NULL)
 984                 return NULL;
 985         wpas_notify_network_added(wpa_s, ssid);
 986         wpa_config_set_network_defaults(ssid);
 987         ssid->temporary = 1;
 988         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 989             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 990             wpa_config_set(ssid, "identity", registrar ?
 991                            "\"" WSC_ID_REGISTRAR "\"" :
 992                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 993                 wpas_notify_network_removed(wpa_s, ssid);
 994                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 995                 return NULL;
 996         }
 997
 998 #ifdef CONFIG_P2P
 999         if (dev_addr)
1000                 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
1001 #endif /* CONFIG_P2P */
1002
1003         if (bssid) {
1004 #ifndef CONFIG_P2P
1005                 struct wpa_bss *bss;
1006                 int count = 0;
1007 #endif /* CONFIG_P2P */
1008
1009                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
1010                 ssid->bssid_set = 1;
1011
1012                 /*
1013                  * Note: With P2P, the SSID may change at the time the WPS
1014                  * provisioning is started, so better not filter the AP based
1015                  * on the current SSID in the scan results.
1016                  */
1017 #ifndef CONFIG_P2P
1018                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1019                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
1020                                 continue;
1021
1022                         os_free(ssid->ssid);
1023                         ssid->ssid = os_malloc(bss->ssid_len);
1024                         if (ssid->ssid == NULL)
1025                                 break;
1026                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1027                         ssid->ssid_len = bss->ssid_len;
1028                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1029                                           "scan results",
1030                                           ssid->ssid, ssid->ssid_len);
1031                         count++;
1032                 }
1033
1034                 if (count > 1) {
1035                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1036                                    "for the AP; use wildcard");
1037                         os_free(ssid->ssid);
1038                         ssid->ssid = NULL;
1039                         ssid->ssid_len = 0;
1040                 }
1041 #endif /* CONFIG_P2P */
1042         }
1043
1044         return ssid;
1045 }
1046
1047
1048 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1049                                   struct wpa_ssid *selected)
1050 {
1051         struct wpa_ssid *ssid;
1052
1053         if (wpa_s->current_ssid) {
1054                 wpa_s->own_disconnect_req = 1;
1055                 wpa_supplicant_deauthenticate(
1056                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1057         }
1058
1059         /* Mark all other networks disabled and trigger reassociation */
1060         ssid = wpa_s->conf->ssid;
1061         while (ssid) {
1062                 int was_disabled = ssid->disabled;
1063                 ssid->disabled_for_connect = 0;
1064                 /*
1065                  * In case the network object corresponds to a persistent group
1066                  * then do not send out network disabled signal. In addition,
1067                  * do not change disabled status of persistent network objects
1068                  * from 2 to 1 should we connect to another network.
1069                  */
1070                 if (was_disabled != 2) {
1071                         ssid->disabled = ssid != selected;
1072                         if (was_disabled != ssid->disabled) {
1073                                 if (ssid->disabled)
1074                                         ssid->disabled_for_connect = 1;
1075                                 wpas_notify_network_enabled_changed(wpa_s,
1076                                                                     ssid);
1077                         }
1078                 }
1079                 ssid = ssid->next;
1080         }
1081 }
1082
1083
1084 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1085                              struct wpa_ssid *selected, const u8 *bssid,
1086                              int freq)
1087 {
1088         struct wpa_bss *bss;
1089
1090         wpa_s->wps_run++;
1091         if (wpa_s->wps_run == 0)
1092                 wpa_s->wps_run++;
1093         wpa_s->after_wps = 0;
1094         wpa_s->known_wps_freq = 0;
1095         if (freq) {
1096                 wpa_s->after_wps = 5;
1097                 wpa_s->wps_freq = freq;
1098         } else if (bssid) {
1099                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1100                 if (bss && bss->freq > 0) {
1101                         wpa_s->known_wps_freq = 1;
1102                         wpa_s->wps_freq = bss->freq;
1103                 }
1104         }
1105
1106         wpas_wps_temp_disable(wpa_s, selected);
1107
1108         wpa_s->disconnected = 0;
1109         wpa_s->reassociate = 1;
1110         wpa_s->scan_runs = 0;
1111         wpa_s->normal_scans = 0;
1112         wpa_s->wps_success = 0;
1113         wpa_s->blacklist_cleared = 0;
1114
1115         wpa_supplicant_cancel_sched_scan(wpa_s);
1116         wpa_supplicant_req_scan(wpa_s, 0, 0);
1117 }
1118
1119
1120 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1121                        int p2p_group)
1122 {
1123         struct wpa_ssid *ssid;
1124
1125 #ifdef CONFIG_AP
1126         if (wpa_s->ap_iface) {
1127                 wpa_printf(MSG_DEBUG,
1128                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1129                 return -1;
1130         }
1131 #endif /* CONFIG_AP */
1132         wpas_clear_wps(wpa_s);
1133         ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1134         if (ssid == NULL)
1135                 return -1;
1136         ssid->temporary = 1;
1137         ssid->p2p_group = p2p_group;
1138 #ifdef CONFIG_P2P
1139         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1140                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1141                 if (ssid->ssid) {
1142                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1143                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1144                                   ssid->ssid_len);
1145                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1146                                           "SSID", ssid->ssid, ssid->ssid_len);
1147                 }
1148         }
1149 #endif /* CONFIG_P2P */
1150         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1151                 return -1;
1152         if (wpa_s->wps_fragment_size)
1153                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1154         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1155                                wpa_s, NULL);
1156         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1157         return 0;
1158 }
1159
1160
1161 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1162                                  const u8 *dev_addr, const u8 *bssid,
1163                                  const char *pin, int p2p_group, u16 dev_pw_id,
1164                                  const u8 *peer_pubkey_hash,
1165                                  const u8 *ssid_val, size_t ssid_len, int freq)
1166 {
1167         struct wpa_ssid *ssid;
1168         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1169         unsigned int rpin = 0;
1170         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1171
1172 #ifdef CONFIG_AP
1173         if (wpa_s->ap_iface) {
1174                 wpa_printf(MSG_DEBUG,
1175                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1176                 return -1;
1177         }
1178 #endif /* CONFIG_AP */
1179         wpas_clear_wps(wpa_s);
1180         if (bssid && is_zero_ether_addr(bssid))
1181                 bssid = NULL;
1182         ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1183         if (ssid == NULL) {
1184                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1185                 return -1;
1186         }
1187         ssid->temporary = 1;
1188         ssid->p2p_group = p2p_group;
1189         if (ssid_val) {
1190                 ssid->ssid = os_malloc(ssid_len);
1191                 if (ssid->ssid) {
1192                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1193                         ssid->ssid_len = ssid_len;
1194                 }
1195         }
1196         if (peer_pubkey_hash) {
1197                 os_memcpy(hash, " pkhash=", 8);
1198                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1199                                            peer_pubkey_hash,
1200                                            WPS_OOB_PUBKEY_HASH_LEN);
1201         } else {
1202                 hash[0] = '\0';
1203         }
1204 #ifdef CONFIG_P2P
1205         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1206                 os_free(ssid->ssid);
1207                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1208                 if (ssid->ssid) {
1209                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1210                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1211                                   ssid->ssid_len);
1212                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1213                                           "SSID", ssid->ssid, ssid->ssid_len);
1214                 }
1215         }
1216 #endif /* CONFIG_P2P */
1217         if (pin)
1218                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1219                             pin, dev_pw_id, hash);
1220         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1221                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1222                             dev_pw_id, hash);
1223         } else {
1224                 rpin = wps_generate_pin();
1225                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1226                             rpin, dev_pw_id, hash);
1227         }
1228         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1229                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1230                 return -1;
1231         }
1232         if (wpa_s->wps_fragment_size)
1233                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1234         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1235                                wpa_s, NULL);
1236         wpa_s->wps_ap_iter = 1;
1237         wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1238         return rpin;
1239 }
1240
1241
1242 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1243                        const char *pin, int p2p_group, u16 dev_pw_id)
1244 {
1245         os_get_reltime(&wpa_s->wps_pin_start_time);
1246         return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1247                                      dev_pw_id, NULL, NULL, 0, 0);
1248 }
1249
1250
1251 void wpas_wps_pbc_overlap(struct wpa_supplicant *wpa_s)
1252 {
1253         union wps_event_data data;
1254
1255         os_memset(&data, 0, sizeof(data));
1256         data.fail.config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
1257         data.fail.error_indication = WPS_EI_NO_ERROR;
1258         /*
1259          * Call wpas_notify_wps_event_fail() directly instead of through
1260          * wpa_supplicant_wps_event() which would end up registering unnecessary
1261          * timeouts (those are only for the case where the failure happens
1262          * during an EAP-WSC exchange).
1263          */
1264         wpas_notify_wps_event_fail(wpa_s, &data.fail);
1265 }
1266
1267 /* Cancel the wps pbc/pin requests */
1268 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1269 {
1270 #ifdef CONFIG_AP
1271         if (wpa_s->ap_iface) {
1272                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1273                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1274         }
1275 #endif /* CONFIG_AP */
1276
1277         if (wpa_s->wpa_state == WPA_SCANNING ||
1278             wpa_s->wpa_state == WPA_DISCONNECTED) {
1279                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1280                 wpa_supplicant_cancel_scan(wpa_s);
1281                 wpas_clear_wps(wpa_s);
1282         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1283                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1284                            "deauthenticate");
1285                 wpa_s->own_disconnect_req = 1;
1286                 wpa_supplicant_deauthenticate(wpa_s,
1287                                               WLAN_REASON_DEAUTH_LEAVING);
1288                 wpas_clear_wps(wpa_s);
1289         } else {
1290                 wpas_wps_reenable_networks(wpa_s);
1291                 wpas_wps_clear_ap_info(wpa_s);
1292                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1293                     0)
1294                         wpas_clear_wps(wpa_s);
1295         }
1296
1297         wpa_s->after_wps = 0;
1298
1299         return 0;
1300 }
1301
1302
1303 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1304                        const char *pin, struct wps_new_ap_settings *settings)
1305 {
1306         struct wpa_ssid *ssid;
1307         char val[200];
1308         char *pos, *end;
1309         int res;
1310
1311 #ifdef CONFIG_AP
1312         if (wpa_s->ap_iface) {
1313                 wpa_printf(MSG_DEBUG,
1314                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1315                 return -1;
1316         }
1317 #endif /* CONFIG_AP */
1318         if (!pin)
1319                 return -1;
1320         wpas_clear_wps(wpa_s);
1321         ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1322         if (ssid == NULL)
1323                 return -1;
1324         ssid->temporary = 1;
1325         pos = val;
1326         end = pos + sizeof(val);
1327         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1328         if (os_snprintf_error(end - pos, res))
1329                 return -1;
1330         pos += res;
1331         if (settings) {
1332                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1333                                   "new_encr=%s new_key=%s",
1334                                   settings->ssid_hex, settings->auth,
1335                                   settings->encr, settings->key_hex);
1336                 if (os_snprintf_error(end - pos, res))
1337                         return -1;
1338                 pos += res;
1339         }
1340         res = os_snprintf(pos, end - pos, "\"");
1341         if (os_snprintf_error(end - pos, res))
1342                 return -1;
1343         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1344                 return -1;
1345         if (wpa_s->wps_fragment_size)
1346                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1347         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1348                                wpa_s, NULL);
1349         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1350         return 0;
1351 }
1352
1353
1354 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1355                                const u8 *p2p_dev_addr, const u8 *psk,
1356                                size_t psk_len)
1357 {
1358         if (is_zero_ether_addr(p2p_dev_addr)) {
1359                 wpa_printf(MSG_DEBUG,
1360                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1361                            MAC2STR(mac_addr));
1362         } else {
1363                 wpa_printf(MSG_DEBUG,
1364                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1365                            " P2P Device Addr " MACSTR,
1366                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1367         }
1368         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1369
1370         /* TODO */
1371
1372         return 0;
1373 }
1374
1375
1376 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1377                                    const struct wps_device_data *dev)
1378 {
1379         char uuid[40], txt[400];
1380         int len;
1381         char devtype[WPS_DEV_TYPE_BUFSIZE];
1382         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1383                 return;
1384         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1385         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1386                           " [%s|%s|%s|%s|%s|%s]",
1387                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1388                           dev->manufacturer, dev->model_name,
1389                           dev->model_number, dev->serial_number,
1390                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1391                                                sizeof(devtype)));
1392         if (!os_snprintf_error(sizeof(txt), len))
1393                 wpa_printf(MSG_INFO, "%s", txt);
1394 }
1395
1396
1397 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1398                                     u16 sel_reg_config_methods)
1399 {
1400 #ifdef CONFIG_WPS_ER
1401         struct wpa_supplicant *wpa_s = ctx;
1402
1403         if (wpa_s->wps_er == NULL)
1404                 return;
1405         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1406                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1407                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1408         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1409                            sel_reg_config_methods);
1410 #endif /* CONFIG_WPS_ER */
1411 }
1412
1413
1414 static u16 wps_fix_config_methods(u16 config_methods)
1415 {
1416         if ((config_methods &
1417              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1418               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1419                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1420                            "virtual_display for WPS 2.0 compliance");
1421                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1422         }
1423         if ((config_methods &
1424              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1425               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1426                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1427                            "virtual_push_button for WPS 2.0 compliance");
1428                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1429         }
1430
1431         return config_methods;
1432 }
1433
1434
1435 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1436                               struct wps_context *wps)
1437 {
1438         char buf[50];
1439         const char *src;
1440
1441         if (is_nil_uuid(wpa_s->conf->uuid)) {
1442                 struct wpa_supplicant *first;
1443                 first = wpa_s->global->ifaces;
1444                 while (first && first->next)
1445                         first = first->next;
1446                 if (first && first != wpa_s) {
1447                         if (wps != wpa_s->global->ifaces->wps)
1448                                 os_memcpy(wps->uuid,
1449                                           wpa_s->global->ifaces->wps->uuid,
1450                                           WPS_UUID_LEN);
1451                         src = "from the first interface";
1452                 } else {
1453                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1454                         src = "based on MAC address";
1455                 }
1456         } else {
1457                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1458                 src = "based on configuration";
1459         }
1460
1461         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1462         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1463 }
1464
1465
1466 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1467                                        struct wps_context *wps)
1468 {
1469         wpabuf_free(wps->dev.vendor_ext_m1);
1470         wps->dev.vendor_ext_m1 = NULL;
1471
1472         if (wpa_s->conf->wps_vendor_ext_m1) {
1473                 wps->dev.vendor_ext_m1 =
1474                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1475                 if (!wps->dev.vendor_ext_m1) {
1476                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1477                                    "allocate memory for vendor_ext_m1");
1478                 }
1479         }
1480 }
1481
1482
1483 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1484 {
1485         struct wps_context *wps;
1486         struct wps_registrar_config rcfg;
1487         struct hostapd_hw_modes *modes;
1488         u16 m;
1489
1490         wps = os_zalloc(sizeof(*wps));
1491         if (wps == NULL)
1492                 return -1;
1493
1494         wps->cred_cb = wpa_supplicant_wps_cred;
1495         wps->event_cb = wpa_supplicant_wps_event;
1496         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1497         wps->cb_ctx = wpa_s;
1498
1499         wps->dev.device_name = wpa_s->conf->device_name;
1500         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1501         wps->dev.model_name = wpa_s->conf->model_name;
1502         wps->dev.model_number = wpa_s->conf->model_number;
1503         wps->dev.serial_number = wpa_s->conf->serial_number;
1504         wps->config_methods =
1505                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1506         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1507             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1508                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1509                            "methods are not allowed at the same time");
1510                 os_free(wps);
1511                 return -1;
1512         }
1513         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1514         wps->dev.config_methods = wps->config_methods;
1515         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1516                   WPS_DEV_TYPE_LEN);
1517
1518         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1519         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1520                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1521
1522         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1523
1524         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1525         modes = wpa_s->hw.modes;
1526         if (modes) {
1527                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1528                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1529                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1530                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1531                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1532                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1533                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1534                                 wps->dev.rf_bands |= WPS_RF_60GHZ;
1535                 }
1536         }
1537         if (wps->dev.rf_bands == 0) {
1538                 /*
1539                  * Default to claiming support for both bands if the driver
1540                  * does not provide support for fetching supported bands.
1541                  */
1542                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1543         }
1544         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1545         wpas_wps_set_uuid(wpa_s, wps);
1546
1547         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1548         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1549
1550         os_memset(&rcfg, 0, sizeof(rcfg));
1551         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1552         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1553         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1554         rcfg.cb_ctx = wpa_s;
1555
1556         wps->registrar = wps_registrar_init(wps, &rcfg);
1557         if (wps->registrar == NULL) {
1558                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1559                 os_free(wps);
1560                 return -1;
1561         }
1562
1563         wpa_s->wps = wps;
1564
1565         return 0;
1566 }
1567
1568
1569 #ifdef CONFIG_WPS_ER
1570 static void wpas_wps_nfc_clear(struct wps_context *wps)
1571 {
1572         wps->ap_nfc_dev_pw_id = 0;
1573         wpabuf_free(wps->ap_nfc_dh_pubkey);
1574         wps->ap_nfc_dh_pubkey = NULL;
1575         wpabuf_free(wps->ap_nfc_dh_privkey);
1576         wps->ap_nfc_dh_privkey = NULL;
1577         wpabuf_free(wps->ap_nfc_dev_pw);
1578         wps->ap_nfc_dev_pw = NULL;
1579 }
1580 #endif /* CONFIG_WPS_ER */
1581
1582
1583 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1584 {
1585         wpas_wps_assoc_with_cred_cancel(wpa_s);
1586         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1587         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1588         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1589         wpas_wps_clear_ap_info(wpa_s);
1590
1591 #ifdef CONFIG_P2P
1592         eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1593 #endif /* CONFIG_P2P */
1594
1595         if (wpa_s->wps == NULL)
1596                 return;
1597
1598 #ifdef CONFIG_WPS_ER
1599         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1600         wpa_s->wps_er = NULL;
1601         wpas_wps_nfc_clear(wpa_s->wps);
1602 #endif /* CONFIG_WPS_ER */
1603
1604         wps_registrar_deinit(wpa_s->wps->registrar);
1605         wpabuf_free(wpa_s->wps->dh_pubkey);
1606         wpabuf_free(wpa_s->wps->dh_privkey);
1607         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1608         os_free(wpa_s->wps->network_key);
1609         os_free(wpa_s->wps);
1610         wpa_s->wps = NULL;
1611 }
1612
1613
1614 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1615                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1616 {
1617         struct wpabuf *wps_ie;
1618
1619         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1620                 return -1;
1621
1622         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1623         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1624                 if (!wps_ie) {
1625                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1626                         return 0;
1627                 }
1628
1629                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1630                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1631                                    "without active PBC Registrar");
1632                         wpabuf_free(wps_ie);
1633                         return 0;
1634                 }
1635
1636                 /* TODO: overlap detection */
1637                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1638                            "(Active PBC)");
1639                 wpabuf_free(wps_ie);
1640                 return 1;
1641         }
1642
1643         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1644                 if (!wps_ie) {
1645                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1646                         return 0;
1647                 }
1648
1649                 /*
1650                  * Start with WPS APs that advertise our address as an
1651                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1652                  * allow any WPS AP after couple of scans since some APs do not
1653                  * set Selected Registrar attribute properly when using
1654                  * external Registrar.
1655                  */
1656                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1657                         struct os_reltime age;
1658
1659                         os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1660
1661                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1662                             age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1663                                 wpa_printf(MSG_DEBUG,
1664                                            "   skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1665                                            wpa_s->scan_runs, (int) age.sec);
1666                                 wpabuf_free(wps_ie);
1667                                 return 0;
1668                         }
1669                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1670                 } else {
1671                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1672                                    "(Authorized MAC or Active PIN)");
1673                 }
1674                 wpabuf_free(wps_ie);
1675                 return 1;
1676         }
1677
1678         if (wps_ie) {
1679                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1680                 wpabuf_free(wps_ie);
1681                 return 1;
1682         }
1683
1684         return -1;
1685 }
1686
1687
1688 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1689                               struct wpa_ssid *ssid,
1690                               struct wpa_bss *bss)
1691 {
1692         struct wpabuf *wps_ie = NULL;
1693         int ret = 0;
1694
1695         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1696                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1697                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1698                         /* allow wildcard SSID for WPS PBC */
1699                         ret = 1;
1700                 }
1701         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1702                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1703                 if (wps_ie &&
1704                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1705                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1706                         /* allow wildcard SSID for WPS PIN */
1707                         ret = 1;
1708                 }
1709         }
1710
1711         if (!ret && ssid->bssid_set &&
1712             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1713                 /* allow wildcard SSID due to hardcoded BSSID match */
1714                 ret = 1;
1715         }
1716
1717 #ifdef CONFIG_WPS_STRICT
1718         if (wps_ie) {
1719                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1720                                                    0, bss->bssid) < 0)
1721                         ret = 0;
1722                 if (bss->beacon_ie_len) {
1723                         struct wpabuf *bcn_wps;
1724                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1725                                 bss, WPS_IE_VENDOR_TYPE);
1726                         if (bcn_wps == NULL) {
1727                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1728                                            "missing from AP Beacon");
1729                                 ret = 0;
1730                         } else {
1731                                 if (wps_validate_beacon(wps_ie) < 0)
1732                                         ret = 0;
1733                                 wpabuf_free(bcn_wps);
1734                         }
1735                 }
1736         }
1737 #endif /* CONFIG_WPS_STRICT */
1738
1739         wpabuf_free(wps_ie);
1740
1741         return ret;
1742 }
1743
1744
1745 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1746                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1747 {
1748         const u8 *sel_uuid;
1749         struct wpabuf *wps_ie;
1750         int ret = 0;
1751         size_t i;
1752
1753         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1754                 return 0;
1755
1756         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1757                    "present in scan results; selected BSSID " MACSTR,
1758                    MAC2STR(selected->bssid));
1759
1760         /* Make sure that only one AP is in active PBC mode */
1761         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1762         if (wps_ie) {
1763                 sel_uuid = wps_get_uuid_e(wps_ie);
1764                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1765                             sel_uuid, UUID_LEN);
1766         } else {
1767                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1768                            "WPS IE?!");
1769                 sel_uuid = NULL;
1770         }
1771
1772         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1773                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1774
1775                 if (!ap->pbc_active ||
1776                     os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1777                         continue;
1778
1779                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1780                            MACSTR, MAC2STR(ap->bssid));
1781                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1782                             ap->uuid, UUID_LEN);
1783                 if (sel_uuid == NULL ||
1784                     os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1785                         ret = 1; /* PBC overlap */
1786                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1787                                 MACSTR " and " MACSTR,
1788                                 MAC2STR(selected->bssid),
1789                                 MAC2STR(ap->bssid));
1790                         break;
1791                 }
1792
1793                 /* TODO: verify that this is reasonable dual-band situation */
1794         }
1795
1796         wpabuf_free(wps_ie);
1797
1798         return ret;
1799 }
1800
1801
1802 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1803 {
1804         struct wpa_bss *bss;
1805         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1806
1807         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1808                 return;
1809
1810         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1811                 struct wpabuf *ie;
1812                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1813                 if (!ie)
1814                         continue;
1815                 if (wps_is_selected_pbc_registrar(ie))
1816                         pbc++;
1817                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1818                         auth++;
1819                 else if (wps_is_selected_pin_registrar(ie))
1820                         pin++;
1821                 else
1822                         wps++;
1823                 wpabuf_free(ie);
1824         }
1825
1826         if (pbc)
1827                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1828         else if (auth)
1829                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1830         else if (pin)
1831                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1832         else if (wps)
1833                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1834 }
1835
1836
1837 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1838 {
1839         struct wpa_ssid *ssid;
1840
1841         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1842                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1843                         return 1;
1844         }
1845
1846         return 0;
1847 }
1848
1849
1850 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1851                               char *end)
1852 {
1853         struct wpabuf *wps_ie;
1854         int ret;
1855
1856         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1857         if (wps_ie == NULL)
1858                 return 0;
1859
1860         ret = wps_attr_text(wps_ie, buf, end);
1861         wpabuf_free(wps_ie);
1862         return ret;
1863 }
1864
1865
1866 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1867 {
1868 #ifdef CONFIG_WPS_ER
1869         if (wpa_s->wps_er) {
1870                 wps_er_refresh(wpa_s->wps_er);
1871                 return 0;
1872         }
1873         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1874         if (wpa_s->wps_er == NULL)
1875                 return -1;
1876         return 0;
1877 #else /* CONFIG_WPS_ER */
1878         return 0;
1879 #endif /* CONFIG_WPS_ER */
1880 }
1881
1882
1883 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1884 {
1885 #ifdef CONFIG_WPS_ER
1886         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1887         wpa_s->wps_er = NULL;
1888 #endif /* CONFIG_WPS_ER */
1889 }
1890
1891
1892 #ifdef CONFIG_WPS_ER
1893 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1894                         const char *uuid, const char *pin)
1895 {
1896         u8 u[UUID_LEN];
1897         const u8 *use_uuid = NULL;
1898         u8 addr_buf[ETH_ALEN];
1899
1900         if (os_strcmp(uuid, "any") == 0) {
1901         } else if (uuid_str2bin(uuid, u) == 0) {
1902                 use_uuid = u;
1903         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1904                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1905                 if (use_uuid == NULL)
1906                         return -1;
1907         } else
1908                 return -1;
1909         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1910                                      use_uuid,
1911                                      (const u8 *) pin, os_strlen(pin), 300);
1912 }
1913
1914
1915 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1916 {
1917         u8 u[UUID_LEN], *use_uuid = NULL;
1918         u8 addr[ETH_ALEN], *use_addr = NULL;
1919
1920         if (uuid_str2bin(uuid, u) == 0)
1921                 use_uuid = u;
1922         else if (hwaddr_aton(uuid, addr) == 0)
1923                 use_addr = addr;
1924         else
1925                 return -1;
1926         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1927 }
1928
1929
1930 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1931                       const char *pin)
1932 {
1933         u8 u[UUID_LEN], *use_uuid = NULL;
1934         u8 addr[ETH_ALEN], *use_addr = NULL;
1935
1936         if (uuid_str2bin(uuid, u) == 0)
1937                 use_uuid = u;
1938         else if (hwaddr_aton(uuid, addr) == 0)
1939                 use_addr = addr;
1940         else
1941                 return -1;
1942
1943         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1944                             os_strlen(pin));
1945 }
1946
1947
1948 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1949                                     struct wps_credential *cred)
1950 {
1951         os_memset(cred, 0, sizeof(*cred));
1952         if (ssid->ssid_len > SSID_MAX_LEN)
1953                 return -1;
1954         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1955         cred->ssid_len = ssid->ssid_len;
1956         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1957                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1958                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1959                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1960                         cred->encr_type = WPS_ENCR_AES;
1961                 else
1962                         cred->encr_type = WPS_ENCR_TKIP;
1963                 if (ssid->passphrase) {
1964                         cred->key_len = os_strlen(ssid->passphrase);
1965                         if (cred->key_len >= 64)
1966                                 return -1;
1967                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1968                 } else if (ssid->psk_set) {
1969                         cred->key_len = 32;
1970                         os_memcpy(cred->key, ssid->psk, 32);
1971                 } else
1972                         return -1;
1973         } else {
1974                 cred->auth_type = WPS_AUTH_OPEN;
1975                 cred->encr_type = WPS_ENCR_NONE;
1976         }
1977
1978         return 0;
1979 }
1980
1981
1982 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1983                            int id)
1984 {
1985         u8 u[UUID_LEN], *use_uuid = NULL;
1986         u8 addr[ETH_ALEN], *use_addr = NULL;
1987         struct wpa_ssid *ssid;
1988         struct wps_credential cred;
1989         int ret;
1990
1991         if (uuid_str2bin(uuid, u) == 0)
1992                 use_uuid = u;
1993         else if (hwaddr_aton(uuid, addr) == 0)
1994                 use_addr = addr;
1995         else
1996                 return -1;
1997         ssid = wpa_config_get_network(wpa_s->conf, id);
1998         if (ssid == NULL || ssid->ssid == NULL)
1999                 return -1;
2000
2001         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2002                 return -1;
2003         ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
2004         os_memset(&cred, 0, sizeof(cred));
2005         return ret;
2006 }
2007
2008
2009 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
2010                        const char *pin, struct wps_new_ap_settings *settings)
2011 {
2012         u8 u[UUID_LEN], *use_uuid = NULL;
2013         u8 addr[ETH_ALEN], *use_addr = NULL;
2014         struct wps_credential cred;
2015         size_t len;
2016
2017         if (uuid_str2bin(uuid, u) == 0)
2018                 use_uuid = u;
2019         else if (hwaddr_aton(uuid, addr) == 0)
2020                 use_addr = addr;
2021         else
2022                 return -1;
2023         if (settings->ssid_hex == NULL || settings->auth == NULL ||
2024             settings->encr == NULL || settings->key_hex == NULL)
2025                 return -1;
2026
2027         os_memset(&cred, 0, sizeof(cred));
2028         len = os_strlen(settings->ssid_hex);
2029         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2030             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2031                 return -1;
2032         cred.ssid_len = len / 2;
2033
2034         len = os_strlen(settings->key_hex);
2035         if ((len & 1) || len > 2 * sizeof(cred.key) ||
2036             hexstr2bin(settings->key_hex, cred.key, len / 2))
2037                 return -1;
2038         cred.key_len = len / 2;
2039
2040         if (os_strcmp(settings->auth, "OPEN") == 0)
2041                 cred.auth_type = WPS_AUTH_OPEN;
2042         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2043                 cred.auth_type = WPS_AUTH_WPAPSK;
2044         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2045                 cred.auth_type = WPS_AUTH_WPA2PSK;
2046         else
2047                 return -1;
2048
2049         if (os_strcmp(settings->encr, "NONE") == 0)
2050                 cred.encr_type = WPS_ENCR_NONE;
2051 #ifdef CONFIG_TESTING_OPTIONS
2052         else if (os_strcmp(settings->encr, "WEP") == 0)
2053                 cred.encr_type = WPS_ENCR_WEP;
2054 #endif /* CONFIG_TESTING_OPTIONS */
2055         else if (os_strcmp(settings->encr, "TKIP") == 0)
2056                 cred.encr_type = WPS_ENCR_TKIP;
2057         else if (os_strcmp(settings->encr, "CCMP") == 0)
2058                 cred.encr_type = WPS_ENCR_AES;
2059         else
2060                 return -1;
2061
2062         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2063                              (const u8 *) pin, os_strlen(pin), &cred);
2064 }
2065
2066
2067 #ifdef CONFIG_WPS_NFC
2068 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2069                                              int ndef, const char *uuid)
2070 {
2071         struct wpabuf *ret;
2072         u8 u[UUID_LEN], *use_uuid = NULL;
2073         u8 addr[ETH_ALEN], *use_addr = NULL;
2074
2075         if (!wpa_s->wps_er)
2076                 return NULL;
2077
2078         if (uuid_str2bin(uuid, u) == 0)
2079                 use_uuid = u;
2080         else if (hwaddr_aton(uuid, addr) == 0)
2081                 use_addr = addr;
2082         else
2083                 return NULL;
2084
2085         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2086         if (ndef && ret) {
2087                 struct wpabuf *tmp;
2088                 tmp = ndef_build_wifi(ret);
2089                 wpabuf_free(ret);
2090                 if (tmp == NULL)
2091                         return NULL;
2092                 ret = tmp;
2093         }
2094
2095         return ret;
2096 }
2097 #endif /* CONFIG_WPS_NFC */
2098
2099
2100 static int callbacks_pending = 0;
2101
2102 static void wpas_wps_terminate_cb(void *ctx)
2103 {
2104         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2105         if (--callbacks_pending <= 0)
2106                 eloop_terminate();
2107 }
2108 #endif /* CONFIG_WPS_ER */
2109
2110
2111 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2112 {
2113 #ifdef CONFIG_WPS_ER
2114         if (wpa_s->wps_er) {
2115                 callbacks_pending++;
2116                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2117                 wpa_s->wps_er = NULL;
2118                 return 1;
2119         }
2120 #endif /* CONFIG_WPS_ER */
2121         return 0;
2122 }
2123
2124
2125 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2126 {
2127         struct wps_context *wps = wpa_s->wps;
2128
2129         if (wps == NULL)
2130                 return;
2131
2132         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2133                 wps->config_methods = wps_config_methods_str2bin(
2134                         wpa_s->conf->config_methods);
2135                 if ((wps->config_methods &
2136                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2137                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2138                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2139                                    "config methods are not allowed at the "
2140                                    "same time");
2141                         wps->config_methods &= ~WPS_CONFIG_LABEL;
2142                 }
2143         }
2144         wps->config_methods = wps_fix_config_methods(wps->config_methods);
2145         wps->dev.config_methods = wps->config_methods;
2146
2147         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2148                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2149                           WPS_DEV_TYPE_LEN);
2150
2151         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2152                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2153                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2154                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2155         }
2156
2157         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2158                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2159
2160         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2161                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2162
2163         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2164                 wpas_wps_set_uuid(wpa_s, wps);
2165
2166         if (wpa_s->conf->changed_parameters &
2167             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2168                 /* Update pointers to make sure they refer current values */
2169                 wps->dev.device_name = wpa_s->conf->device_name;
2170                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2171                 wps->dev.model_name = wpa_s->conf->model_name;
2172                 wps->dev.model_number = wpa_s->conf->model_number;
2173                 wps->dev.serial_number = wpa_s->conf->serial_number;
2174         }
2175 }
2176
2177
2178 #ifdef CONFIG_WPS_NFC
2179
2180 #ifdef CONFIG_WPS_ER
2181 static struct wpabuf *
2182 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2183                               struct wpa_ssid *ssid)
2184 {
2185         struct wpabuf *ret;
2186         struct wps_credential cred;
2187
2188         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2189                 return NULL;
2190
2191         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2192
2193         if (ndef && ret) {
2194                 struct wpabuf *tmp;
2195                 tmp = ndef_build_wifi(ret);
2196                 wpabuf_free(ret);
2197                 if (tmp == NULL)
2198                         return NULL;
2199                 ret = tmp;
2200         }
2201
2202         return ret;
2203 }
2204 #endif /* CONFIG_WPS_ER */
2205
2206
2207 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2208                                           int ndef, const char *id_str)
2209 {
2210 #ifdef CONFIG_WPS_ER
2211         if (id_str) {
2212                 int id;
2213                 char *end = NULL;
2214                 struct wpa_ssid *ssid;
2215
2216                 id = strtol(id_str, &end, 10);
2217                 if (end && *end)
2218                         return NULL;
2219
2220                 ssid = wpa_config_get_network(wpa_s->conf, id);
2221                 if (ssid == NULL)
2222                         return NULL;
2223                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2224         }
2225 #endif /* CONFIG_WPS_ER */
2226 #ifdef CONFIG_AP
2227         if (wpa_s->ap_iface)
2228                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2229 #endif /* CONFIG_AP */
2230         return NULL;
2231 }
2232
2233
2234 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2235 {
2236         if (wpa_s->conf->wps_nfc_pw_from_config) {
2237                 return wps_nfc_token_build(ndef,
2238                                            wpa_s->conf->wps_nfc_dev_pw_id,
2239                                            wpa_s->conf->wps_nfc_dh_pubkey,
2240                                            wpa_s->conf->wps_nfc_dev_pw);
2241         }
2242
2243         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2244                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2245                                  &wpa_s->conf->wps_nfc_dh_privkey,
2246                                  &wpa_s->conf->wps_nfc_dev_pw);
2247 }
2248
2249
2250 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2251                        const u8 *bssid,
2252                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2253                        int p2p_group, const u8 *peer_pubkey_hash,
2254                        const u8 *ssid, size_t ssid_len, int freq)
2255 {
2256         struct wps_context *wps = wpa_s->wps;
2257         char pw[32 * 2 + 1];
2258
2259         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2260                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2261                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2262         }
2263
2264         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2265             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2266                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2267                            "cannot start NFC-triggered connection");
2268                 return -1;
2269         }
2270
2271         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2272                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2273                            "cannot start NFC-triggered connection", dev_pw_id);
2274                 return -1;
2275         }
2276
2277         dh5_free(wps->dh_ctx);
2278         wpabuf_free(wps->dh_pubkey);
2279         wpabuf_free(wps->dh_privkey);
2280         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2281         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2282         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2283                 wps->dh_ctx = NULL;
2284                 wpabuf_free(wps->dh_pubkey);
2285                 wps->dh_pubkey = NULL;
2286                 wpabuf_free(wps->dh_privkey);
2287                 wps->dh_privkey = NULL;
2288                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2289                 return -1;
2290         }
2291         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2292         if (wps->dh_ctx == NULL) {
2293                 wpabuf_free(wps->dh_pubkey);
2294                 wps->dh_pubkey = NULL;
2295                 wpabuf_free(wps->dh_privkey);
2296                 wps->dh_privkey = NULL;
2297                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2298                 return -1;
2299         }
2300
2301         if (dev_pw) {
2302                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2303                                            wpabuf_head(dev_pw),
2304                                            wpabuf_len(dev_pw));
2305         }
2306         return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2307                                      dev_pw ? pw : NULL,
2308                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2309                                      ssid, ssid_len, freq);
2310 }
2311
2312
2313 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2314                              struct wps_parse_attr *attr)
2315 {
2316         /*
2317          * Disable existing networks temporarily to allow the newly learned
2318          * credential to be preferred. Enable the temporarily disabled networks
2319          * after 10 seconds.
2320          */
2321         wpas_wps_temp_disable(wpa_s, NULL);
2322         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2323                                NULL);
2324
2325         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2326                 return -1;
2327
2328         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2329                 return 0;
2330
2331         if (attr->ap_channel) {
2332                 u16 chan = WPA_GET_BE16(attr->ap_channel);
2333                 int freq = 0;
2334
2335                 if (chan >= 1 && chan <= 13)
2336                         freq = 2407 + 5 * chan;
2337                 else if (chan == 14)
2338                         freq = 2484;
2339                 else if (chan >= 30)
2340                         freq = 5000 + 5 * chan;
2341
2342                 if (freq) {
2343                         wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2344                                    chan, freq);
2345                         wpa_s->after_wps = 5;
2346                         wpa_s->wps_freq = freq;
2347                 }
2348         }
2349
2350         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2351                    "based on the received credential added");
2352         wpa_s->normal_scans = 0;
2353         wpa_supplicant_reinit_autoscan(wpa_s);
2354         wpa_s->disconnected = 0;
2355         wpa_s->reassociate = 1;
2356
2357         wpa_supplicant_cancel_sched_scan(wpa_s);
2358         wpa_supplicant_req_scan(wpa_s, 0, 0);
2359
2360         return 0;
2361 }
2362
2363
2364 #ifdef CONFIG_WPS_ER
2365 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2366                                            struct wps_parse_attr *attr)
2367 {
2368         return wps_registrar_add_nfc_password_token(
2369                 wpa_s->wps->registrar, attr->oob_dev_password,
2370                 attr->oob_dev_password_len);
2371 }
2372 #endif /* CONFIG_WPS_ER */
2373
2374
2375 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2376                                     const struct wpabuf *wps)
2377 {
2378         struct wps_parse_attr attr;
2379
2380         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2381
2382         if (wps_parse_msg(wps, &attr)) {
2383                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2384                 return -1;
2385         }
2386
2387         if (attr.num_cred)
2388                 return wpas_wps_use_cred(wpa_s, &attr);
2389
2390 #ifdef CONFIG_WPS_ER
2391         if (attr.oob_dev_password)
2392                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2393 #endif /* CONFIG_WPS_ER */
2394
2395         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2396         return -1;
2397 }
2398
2399
2400 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2401                           const struct wpabuf *data, int forced_freq)
2402 {
2403         const struct wpabuf *wps = data;
2404         struct wpabuf *tmp = NULL;
2405         int ret;
2406
2407         if (wpabuf_len(data) < 4)
2408                 return -1;
2409
2410         if (*wpabuf_head_u8(data) != 0x10) {
2411                 /* Assume this contains full NDEF record */
2412                 tmp = ndef_parse_wifi(data);
2413                 if (tmp == NULL) {
2414 #ifdef CONFIG_P2P
2415                         tmp = ndef_parse_p2p(data);
2416                         if (tmp) {
2417                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2418                                                                forced_freq);
2419                                 wpabuf_free(tmp);
2420                                 return ret;
2421                         }
2422 #endif /* CONFIG_P2P */
2423                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2424                         return -1;
2425                 }
2426                 wps = tmp;
2427         }
2428
2429         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2430         wpabuf_free(tmp);
2431         return ret;
2432 }
2433
2434
2435 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2436                                           int ndef)
2437 {
2438         struct wpabuf *ret;
2439
2440         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2441             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2442                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2443                 return NULL;
2444
2445         ret = wps_build_nfc_handover_req(wpa_s->wps,
2446                                          wpa_s->conf->wps_nfc_dh_pubkey);
2447
2448         if (ndef && ret) {
2449                 struct wpabuf *tmp;
2450                 tmp = ndef_build_wifi(ret);
2451                 wpabuf_free(ret);
2452                 if (tmp == NULL)
2453                         return NULL;
2454                 ret = tmp;
2455         }
2456
2457         return ret;
2458 }
2459
2460
2461 #ifdef CONFIG_WPS_NFC
2462
2463 static struct wpabuf *
2464 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2465                              const char *uuid)
2466 {
2467 #ifdef CONFIG_WPS_ER
2468         struct wpabuf *ret;
2469         u8 u[UUID_LEN], *use_uuid = NULL;
2470         u8 addr[ETH_ALEN], *use_addr = NULL;
2471         struct wps_context *wps = wpa_s->wps;
2472
2473         if (wps == NULL)
2474                 return NULL;
2475
2476         if (uuid == NULL)
2477                 return NULL;
2478         if (uuid_str2bin(uuid, u) == 0)
2479                 use_uuid = u;
2480         else if (hwaddr_aton(uuid, addr) == 0)
2481                 use_addr = addr;
2482         else
2483                 return NULL;
2484
2485         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2486                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2487                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2488                         return NULL;
2489         }
2490
2491         wpas_wps_nfc_clear(wps);
2492         wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2493         wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2494         wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2495         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2496                 wpas_wps_nfc_clear(wps);
2497                 return NULL;
2498         }
2499
2500         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2501                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2502         if (ndef && ret) {
2503                 struct wpabuf *tmp;
2504                 tmp = ndef_build_wifi(ret);
2505                 wpabuf_free(ret);
2506                 if (tmp == NULL)
2507                         return NULL;
2508                 ret = tmp;
2509         }
2510
2511         return ret;
2512 #else /* CONFIG_WPS_ER */
2513         return NULL;
2514 #endif /* CONFIG_WPS_ER */
2515 }
2516 #endif /* CONFIG_WPS_NFC */
2517
2518
2519 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2520                                           int ndef, int cr, const char *uuid)
2521 {
2522         struct wpabuf *ret;
2523         if (!cr)
2524                 return NULL;
2525         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2526         if (ret)
2527                 return ret;
2528         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2529 }
2530
2531
2532 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2533                                         const struct wpabuf *data)
2534 {
2535         struct wpabuf *wps;
2536         int ret = -1;
2537         u16 wsc_len;
2538         const u8 *pos;
2539         struct wpabuf msg;
2540         struct wps_parse_attr attr;
2541         u16 dev_pw_id;
2542         const u8 *bssid = NULL;
2543         int freq = 0;
2544
2545         wps = ndef_parse_wifi(data);
2546         if (wps == NULL)
2547                 return -1;
2548         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2549                    "payload from NFC connection handover");
2550         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2551         if (wpabuf_len(wps) < 2) {
2552                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2553                            "Message");
2554                 goto out;
2555         }
2556         pos = wpabuf_head(wps);
2557         wsc_len = WPA_GET_BE16(pos);
2558         if (wsc_len > wpabuf_len(wps) - 2) {
2559                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2560                            "in Wi-Fi Handover Select Message", wsc_len);
2561                 goto out;
2562         }
2563         pos += 2;
2564
2565         wpa_hexdump(MSG_DEBUG,
2566                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2567                     pos, wsc_len);
2568         if (wsc_len < wpabuf_len(wps) - 2) {
2569                 wpa_hexdump(MSG_DEBUG,
2570                             "WPS: Ignore extra data after WSC attributes",
2571                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2572         }
2573
2574         wpabuf_set(&msg, pos, wsc_len);
2575         ret = wps_parse_msg(&msg, &attr);
2576         if (ret < 0) {
2577                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2578                            "Wi-Fi Handover Select Message");
2579                 goto out;
2580         }
2581
2582         if (attr.oob_dev_password == NULL ||
2583             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2584                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2585                            "included in Wi-Fi Handover Select Message");
2586                 ret = -1;
2587                 goto out;
2588         }
2589
2590         if (attr.ssid == NULL) {
2591                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2592                            "Select Message");
2593                 ret = -1;
2594                 goto out;
2595         }
2596
2597         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2598
2599         if (attr.mac_addr) {
2600                 bssid = attr.mac_addr;
2601                 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2602                            MAC2STR(bssid));
2603         }
2604
2605         if (attr.rf_bands)
2606                 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2607
2608         if (attr.ap_channel) {
2609                 u16 chan = WPA_GET_BE16(attr.ap_channel);
2610
2611                 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2612
2613                 if (chan >= 1 && chan <= 13 &&
2614                     (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2615                         freq = 2407 + 5 * chan;
2616                 else if (chan == 14 &&
2617                          (attr.rf_bands == NULL ||
2618                           *attr.rf_bands & WPS_RF_24GHZ))
2619                         freq = 2484;
2620                 else if (chan >= 30 &&
2621                          (attr.rf_bands == NULL ||
2622                           *attr.rf_bands & WPS_RF_50GHZ))
2623                         freq = 5000 + 5 * chan;
2624                 else if (chan >= 1 && chan <= 4 &&
2625                          (attr.rf_bands == NULL ||
2626                           *attr.rf_bands & WPS_RF_60GHZ))
2627                         freq = 56160 + 2160 * chan;
2628
2629                 if (freq) {
2630                         wpa_printf(MSG_DEBUG,
2631                                    "WPS: AP indicated channel %u -> %u MHz",
2632                                    chan, freq);
2633                 }
2634         }
2635
2636         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2637                     attr.oob_dev_password, attr.oob_dev_password_len);
2638         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2639                                  WPS_OOB_PUBKEY_HASH_LEN);
2640         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2641                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2642                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2643                 ret = -1;
2644                 goto out;
2645         }
2646         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2647                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2648
2649         ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2650                                  attr.oob_dev_password,
2651                                  attr.ssid, attr.ssid_len, freq);
2652
2653 out:
2654         wpabuf_free(wps);
2655         return ret;
2656 }
2657
2658
2659 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2660                                  const struct wpabuf *req,
2661                                  const struct wpabuf *sel)
2662 {
2663         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2664         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2665         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2666         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2667 }
2668
2669
2670 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2671                                     const struct wpabuf *req,
2672                                     const struct wpabuf *sel)
2673 {
2674         struct wpabuf *wps;
2675         int ret = -1;
2676         u16 wsc_len;
2677         const u8 *pos;
2678         struct wpabuf msg;
2679         struct wps_parse_attr attr;
2680         u16 dev_pw_id;
2681
2682         /*
2683          * Enrollee/station is always initiator of the NFC connection handover,
2684          * so use the request message here to find Enrollee public key hash.
2685          */
2686         wps = ndef_parse_wifi(req);
2687         if (wps == NULL)
2688                 return -1;
2689         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2690                    "payload from NFC connection handover");
2691         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2692         if (wpabuf_len(wps) < 2) {
2693                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2694                            "Message");
2695                 goto out;
2696         }
2697         pos = wpabuf_head(wps);
2698         wsc_len = WPA_GET_BE16(pos);
2699         if (wsc_len > wpabuf_len(wps) - 2) {
2700                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2701                            "in rt Wi-Fi Handover Request Message", wsc_len);
2702                 goto out;
2703         }
2704         pos += 2;
2705
2706         wpa_hexdump(MSG_DEBUG,
2707                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2708                     pos, wsc_len);
2709         if (wsc_len < wpabuf_len(wps) - 2) {
2710                 wpa_hexdump(MSG_DEBUG,
2711                             "WPS: Ignore extra data after WSC attributes",
2712                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2713         }
2714
2715         wpabuf_set(&msg, pos, wsc_len);
2716         ret = wps_parse_msg(&msg, &attr);
2717         if (ret < 0) {
2718                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2719                            "Wi-Fi Handover Request Message");
2720                 goto out;
2721         }
2722
2723         if (attr.oob_dev_password == NULL ||
2724             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2725                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2726                            "included in Wi-Fi Handover Request Message");
2727                 ret = -1;
2728                 goto out;
2729         }
2730
2731         if (attr.uuid_e == NULL) {
2732                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2733                            "Handover Request Message");
2734                 ret = -1;
2735                 goto out;
2736         }
2737
2738         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2739
2740         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2741                     attr.oob_dev_password, attr.oob_dev_password_len);
2742         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2743                                  WPS_OOB_PUBKEY_HASH_LEN);
2744         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2745                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2746                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2747                 ret = -1;
2748                 goto out;
2749         }
2750         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2751                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2752
2753         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2754                                              attr.oob_dev_password,
2755                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2756                                              NULL, 0, 1);
2757
2758 out:
2759         wpabuf_free(wps);
2760         return ret;
2761 }
2762
2763 #endif /* CONFIG_WPS_NFC */
2764
2765
2766 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2767 {
2768         size_t i;
2769         struct os_reltime now;
2770
2771         if (wpa_debug_level > MSG_DEBUG)
2772                 return;
2773
2774         if (wpa_s->wps_ap == NULL)
2775                 return;
2776
2777         os_get_reltime(&now);
2778
2779         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2780                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2781                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2782
2783                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2784                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2785                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2786                            ap->last_attempt.sec > 0 ?
2787                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2788                            e ? e->count : 0);
2789         }
2790 }
2791
2792
2793 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2794                                                  const u8 *bssid)
2795 {
2796         size_t i;
2797
2798         if (wpa_s->wps_ap == NULL)
2799                 return NULL;
2800
2801         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2802                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2803                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2804                         return ap;
2805         }
2806
2807         return NULL;
2808 }
2809
2810
2811 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2812                                         struct wpa_scan_res *res)
2813 {
2814         struct wpabuf *wps;
2815         enum wps_ap_info_type type;
2816         struct wps_ap_info *ap;
2817         int r, pbc_active;
2818         const u8 *uuid;
2819
2820         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2821                 return;
2822
2823         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2824         if (wps == NULL)
2825                 return;
2826
2827         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2828         if (r == 2)
2829                 type = WPS_AP_SEL_REG_OUR;
2830         else if (r == 1)
2831                 type = WPS_AP_SEL_REG;
2832         else
2833                 type = WPS_AP_NOT_SEL_REG;
2834
2835         uuid = wps_get_uuid_e(wps);
2836         pbc_active = wps_is_selected_pbc_registrar(wps);
2837
2838         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2839         if (ap) {
2840                 if (ap->type != type) {
2841                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2842                                    " changed type %d -> %d",
2843                                    MAC2STR(res->bssid), ap->type, type);
2844                         ap->type = type;
2845                         if (type != WPS_AP_NOT_SEL_REG)
2846                                 wpa_blacklist_del(wpa_s, ap->bssid);
2847                 }
2848                 ap->pbc_active = pbc_active;
2849                 if (uuid)
2850                         os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2851                 goto out;
2852         }
2853
2854         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2855                               sizeof(struct wps_ap_info));
2856         if (ap == NULL)
2857                 goto out;
2858
2859         wpa_s->wps_ap = ap;
2860         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2861         wpa_s->num_wps_ap++;
2862
2863         os_memset(ap, 0, sizeof(*ap));
2864         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2865         ap->type = type;
2866         ap->pbc_active = pbc_active;
2867         if (uuid)
2868                 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2869         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2870                    MAC2STR(ap->bssid), ap->type);
2871
2872 out:
2873         wpabuf_free(wps);
2874 }
2875
2876
2877 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2878                              struct wpa_scan_results *scan_res)
2879 {
2880         size_t i;
2881
2882         for (i = 0; i < scan_res->num; i++)
2883                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2884
2885         wpas_wps_dump_ap_info(wpa_s);
2886 }
2887
2888
2889 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2890 {
2891         struct wps_ap_info *ap;
2892
2893         wpa_s->after_wps = 0;
2894
2895         if (!wpa_s->wps_ap_iter)
2896                 return;
2897         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2898         if (ap == NULL)
2899                 return;
2900         ap->tries++;
2901         os_get_reltime(&ap->last_attempt);
2902 }