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->p2pdev && wpa_s->p2pdev != wpa_s) {
 587                 wpa_msg(wpa_s->p2pdev, 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->p2pdev && wpa_s->p2pdev != wpa_s)
 621                         wpa_msg(wpa_s->p2pdev, 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->p2pdev && wpa_s->p2pdev != wpa_s)
 631                         wpa_msg(wpa_s->p2pdev, 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 int wpas_wps_reenable_networks_pending(struct wpa_supplicant *wpa_s)
 687 {
 688         return eloop_is_timeout_registered(wpas_wps_reenable_networks_cb,
 689                                            wpa_s, NULL);
 690 }
 691
 692
 693 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 694 {
 695         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 696         wpa_s->wps_success = 1;
 697         wpas_notify_wps_event_success(wpa_s);
 698         if (wpa_s->current_ssid)
 699                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 700         wpa_s->extra_blacklist_count = 0;
 701
 702         /*
 703          * Enable the networks disabled during wpas_wps_reassoc after 10
 704          * seconds. The 10 seconds timer is to allow the data connection to be
 705          * formed before allowing other networks to be selected.
 706          */
 707         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 708                                NULL);
 709
 710         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 711 }
 712
 713
 714 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 715                                                struct wps_event_er_ap *ap)
 716 {
 717         char uuid_str[100];
 718         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 719
 720         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 721         if (ap->pri_dev_type)
 722                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 723                                      sizeof(dev_type));
 724         else
 725                 dev_type[0] = '\0';
 726
 727         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 728                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 729                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 730                 ap->friendly_name ? ap->friendly_name : "",
 731                 ap->manufacturer ? ap->manufacturer : "",
 732                 ap->model_description ? ap->model_description : "",
 733                 ap->model_name ? ap->model_name : "",
 734                 ap->manufacturer_url ? ap->manufacturer_url : "",
 735                 ap->model_url ? ap->model_url : "");
 736 }
 737
 738
 739 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 740                                                   struct wps_event_er_ap *ap)
 741 {
 742         char uuid_str[100];
 743         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 744         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 745 }
 746
 747
 748 static void wpa_supplicant_wps_event_er_enrollee_add(
 749         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 750 {
 751         char uuid_str[100];
 752         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 753
 754         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 755         if (enrollee->pri_dev_type)
 756                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 757                                      sizeof(dev_type));
 758         else
 759                 dev_type[0] = '\0';
 760
 761         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 762                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 763                 "|%s|%s|%s|%s|%s|",
 764                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 765                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 766                 enrollee->dev_name ? enrollee->dev_name : "",
 767                 enrollee->manufacturer ? enrollee->manufacturer : "",
 768                 enrollee->model_name ? enrollee->model_name : "",
 769                 enrollee->model_number ? enrollee->model_number : "",
 770                 enrollee->serial_number ? enrollee->serial_number : "");
 771 }
 772
 773
 774 static void wpa_supplicant_wps_event_er_enrollee_remove(
 775         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 776 {
 777         char uuid_str[100];
 778         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 779         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 780                 uuid_str, MAC2STR(enrollee->mac_addr));
 781 }
 782
 783
 784 static void wpa_supplicant_wps_event_er_ap_settings(
 785         struct wpa_supplicant *wpa_s,
 786         struct wps_event_er_ap_settings *ap_settings)
 787 {
 788         char uuid_str[100];
 789         char key_str[65];
 790         const struct wps_credential *cred = ap_settings->cred;
 791
 792         key_str[0] = '\0';
 793         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 794                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 795                         os_memcpy(key_str, cred->key, cred->key_len);
 796                         key_str[cred->key_len] = '\0';
 797                 }
 798         }
 799
 800         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 801         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 802         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 803                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 804                      "key=%s",
 805                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 806                      cred->auth_type, cred->encr_type, key_str);
 807 }
 808
 809
 810 static void wpa_supplicant_wps_event_er_set_sel_reg(
 811         struct wpa_supplicant *wpa_s,
 812         struct wps_event_er_set_selected_registrar *ev)
 813 {
 814         char uuid_str[100];
 815
 816         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 817         switch (ev->state) {
 818         case WPS_ER_SET_SEL_REG_START:
 819                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 820                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 821                         "sel_reg_config_methods=0x%x",
 822                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 823                         ev->sel_reg_config_methods);
 824                 break;
 825         case WPS_ER_SET_SEL_REG_DONE:
 826                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 827                         "uuid=%s state=DONE", uuid_str);
 828                 break;
 829         case WPS_ER_SET_SEL_REG_FAILED:
 830                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 831                         "uuid=%s state=FAILED", uuid_str);
 832                 break;
 833         }
 834 }
 835
 836
 837 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 838                                      union wps_event_data *data)
 839 {
 840         struct wpa_supplicant *wpa_s = ctx;
 841         switch (event) {
 842         case WPS_EV_M2D:
 843                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 844                 break;
 845         case WPS_EV_FAIL:
 846                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 847                 break;
 848         case WPS_EV_SUCCESS:
 849                 wpa_supplicant_wps_event_success(wpa_s);
 850                 break;
 851         case WPS_EV_PWD_AUTH_FAIL:
 852 #ifdef CONFIG_AP
 853                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 854                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 855 #endif /* CONFIG_AP */
 856                 break;
 857         case WPS_EV_PBC_OVERLAP:
 858                 break;
 859         case WPS_EV_PBC_TIMEOUT:
 860                 break;
 861         case WPS_EV_PBC_ACTIVE:
 862                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 863                 break;
 864         case WPS_EV_PBC_DISABLE:
 865                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 866                 break;
 867         case WPS_EV_ER_AP_ADD:
 868                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 869                 break;
 870         case WPS_EV_ER_AP_REMOVE:
 871                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 872                 break;
 873         case WPS_EV_ER_ENROLLEE_ADD:
 874                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 875                                                          &data->enrollee);
 876                 break;
 877         case WPS_EV_ER_ENROLLEE_REMOVE:
 878                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 879                                                             &data->enrollee);
 880                 break;
 881         case WPS_EV_ER_AP_SETTINGS:
 882                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 883                                                         &data->ap_settings);
 884                 break;
 885         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 886                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 887                                                         &data->set_sel_reg);
 888                 break;
 889         case WPS_EV_AP_PIN_SUCCESS:
 890                 break;
 891         }
 892 }
 893
 894
 895 static int wpa_supplicant_wps_rf_band(void *ctx)
 896 {
 897         struct wpa_supplicant *wpa_s = ctx;
 898
 899         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 900                 return 0;
 901
 902         return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ :
 903                 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 904 }
 905
 906
 907 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 908 {
 909         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 910             eap_is_wps_pin_enrollee(&ssid->eap))
 911                 return WPS_REQ_ENROLLEE;
 912         else
 913                 return WPS_REQ_REGISTRAR;
 914 }
 915
 916
 917 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 918 {
 919         int id;
 920         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 921
 922         wpa_s->after_wps = 0;
 923         wpa_s->known_wps_freq = 0;
 924
 925         prev_current = wpa_s->current_ssid;
 926
 927         /* Enable the networks disabled during wpas_wps_reassoc */
 928         wpas_wps_reenable_networks(wpa_s);
 929
 930         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 931         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 932
 933         /* Remove any existing WPS network from configuration */
 934         ssid = wpa_s->conf->ssid;
 935         while (ssid) {
 936                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 937                         if (ssid == wpa_s->current_ssid) {
 938                                 wpa_s->own_disconnect_req = 1;
 939                                 wpa_supplicant_deauthenticate(
 940                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 941                         }
 942                         id = ssid->id;
 943                         remove_ssid = ssid;
 944                 } else
 945                         id = -1;
 946                 ssid = ssid->next;
 947                 if (id >= 0) {
 948                         if (prev_current == remove_ssid) {
 949                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 950                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 951                                                        NULL);
 952                         }
 953                         wpas_notify_network_removed(wpa_s, remove_ssid);
 954                         wpa_config_remove_network(wpa_s->conf, id);
 955                 }
 956         }
 957
 958         wpas_wps_clear_ap_info(wpa_s);
 959 }
 960
 961
 962 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 963 {
 964         struct wpa_supplicant *wpa_s = eloop_ctx;
 965         union wps_event_data data;
 966
 967         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 968                 "out");
 969         os_memset(&data, 0, sizeof(data));
 970         data.fail.config_error = WPS_CFG_MSG_TIMEOUT;
 971         data.fail.error_indication = WPS_EI_NO_ERROR;
 972         /*
 973          * Call wpas_notify_wps_event_fail() directly instead of through
 974          * wpa_supplicant_wps_event() which would end up registering unnecessary
 975          * timeouts (those are only for the case where the failure happens
 976          * during an EAP-WSC exchange).
 977          */
 978         wpas_notify_wps_event_fail(wpa_s, &data.fail);
 979         wpas_clear_wps(wpa_s);
 980 }
 981
 982
 983 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 984                                               int registrar, const u8 *dev_addr,
 985                                               const u8 *bssid)
 986 {
 987         struct wpa_ssid *ssid;
 988
 989         ssid = wpa_config_add_network(wpa_s->conf);
 990         if (ssid == NULL)
 991                 return NULL;
 992         wpas_notify_network_added(wpa_s, ssid);
 993         wpa_config_set_network_defaults(ssid);
 994         ssid->temporary = 1;
 995         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 996             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 997             wpa_config_set(ssid, "identity", registrar ?
 998                            "\"" WSC_ID_REGISTRAR "\"" :
 999                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
1000                 wpas_notify_network_removed(wpa_s, ssid);
1001                 wpa_config_remove_network(wpa_s->conf, ssid->id);
1002                 return NULL;
1003         }
1004
1005 #ifdef CONFIG_P2P
1006         if (dev_addr)
1007                 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
1008 #endif /* CONFIG_P2P */
1009
1010         if (bssid) {
1011 #ifndef CONFIG_P2P
1012                 struct wpa_bss *bss;
1013                 int count = 0;
1014 #endif /* CONFIG_P2P */
1015
1016                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
1017                 ssid->bssid_set = 1;
1018
1019                 /*
1020                  * Note: With P2P, the SSID may change at the time the WPS
1021                  * provisioning is started, so better not filter the AP based
1022                  * on the current SSID in the scan results.
1023                  */
1024 #ifndef CONFIG_P2P
1025                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1026                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
1027                                 continue;
1028
1029                         os_free(ssid->ssid);
1030                         ssid->ssid = os_malloc(bss->ssid_len);
1031                         if (ssid->ssid == NULL)
1032                                 break;
1033                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1034                         ssid->ssid_len = bss->ssid_len;
1035                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1036                                           "scan results",
1037                                           ssid->ssid, ssid->ssid_len);
1038                         count++;
1039                 }
1040
1041                 if (count > 1) {
1042                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1043                                    "for the AP; use wildcard");
1044                         os_free(ssid->ssid);
1045                         ssid->ssid = NULL;
1046                         ssid->ssid_len = 0;
1047                 }
1048 #endif /* CONFIG_P2P */
1049         }
1050
1051         return ssid;
1052 }
1053
1054
1055 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1056                                   struct wpa_ssid *selected)
1057 {
1058         struct wpa_ssid *ssid;
1059
1060         if (wpa_s->current_ssid) {
1061                 wpa_s->own_disconnect_req = 1;
1062                 wpa_supplicant_deauthenticate(
1063                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1064         }
1065
1066         /* Mark all other networks disabled and trigger reassociation */
1067         ssid = wpa_s->conf->ssid;
1068         while (ssid) {
1069                 int was_disabled = ssid->disabled;
1070                 ssid->disabled_for_connect = 0;
1071                 /*
1072                  * In case the network object corresponds to a persistent group
1073                  * then do not send out network disabled signal. In addition,
1074                  * do not change disabled status of persistent network objects
1075                  * from 2 to 1 should we connect to another network.
1076                  */
1077                 if (was_disabled != 2) {
1078                         ssid->disabled = ssid != selected;
1079                         if (was_disabled != ssid->disabled) {
1080                                 if (ssid->disabled)
1081                                         ssid->disabled_for_connect = 1;
1082                                 wpas_notify_network_enabled_changed(wpa_s,
1083                                                                     ssid);
1084                         }
1085                 }
1086                 ssid = ssid->next;
1087         }
1088 }
1089
1090
1091 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1092                              struct wpa_ssid *selected, const u8 *bssid,
1093                              int freq)
1094 {
1095         struct wpa_bss *bss;
1096
1097         wpa_s->wps_run++;
1098         if (wpa_s->wps_run == 0)
1099                 wpa_s->wps_run++;
1100         wpa_s->after_wps = 0;
1101         wpa_s->known_wps_freq = 0;
1102         if (freq) {
1103                 wpa_s->after_wps = 5;
1104                 wpa_s->wps_freq = freq;
1105         } else if (bssid) {
1106                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1107                 if (bss && bss->freq > 0) {
1108                         wpa_s->known_wps_freq = 1;
1109                         wpa_s->wps_freq = bss->freq;
1110                 }
1111         }
1112
1113         wpas_wps_temp_disable(wpa_s, selected);
1114
1115         wpa_s->disconnected = 0;
1116         wpa_s->reassociate = 1;
1117         wpa_s->scan_runs = 0;
1118         wpa_s->normal_scans = 0;
1119         wpa_s->wps_success = 0;
1120         wpa_s->blacklist_cleared = 0;
1121
1122         wpa_supplicant_cancel_sched_scan(wpa_s);
1123         wpa_supplicant_req_scan(wpa_s, 0, 0);
1124 }
1125
1126
1127 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1128                        int p2p_group)
1129 {
1130         struct wpa_ssid *ssid;
1131
1132 #ifdef CONFIG_AP
1133         if (wpa_s->ap_iface) {
1134                 wpa_printf(MSG_DEBUG,
1135                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1136                 return -1;
1137         }
1138 #endif /* CONFIG_AP */
1139         wpas_clear_wps(wpa_s);
1140         ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1141         if (ssid == NULL)
1142                 return -1;
1143         ssid->temporary = 1;
1144         ssid->p2p_group = p2p_group;
1145         /*
1146          * When starting a regular WPS process (not P2P group formation)
1147          * the registrar/final station can be either AP or PCP
1148          * so use a "don't care" value for the pbss flag.
1149          */
1150         if (!p2p_group)
1151                 ssid->pbss = 2;
1152 #ifdef CONFIG_P2P
1153         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1154                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1155                 if (ssid->ssid) {
1156                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1157                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1158                                   ssid->ssid_len);
1159                         if (wpa_s->go_params->freq > 56160) {
1160                                 /* P2P in 60 GHz uses PBSS */
1161                                 ssid->pbss = 1;
1162                         }
1163                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1164                                           "SSID", ssid->ssid, ssid->ssid_len);
1165                 }
1166         }
1167 #endif /* CONFIG_P2P */
1168         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1169                 return -1;
1170         if (wpa_s->wps_fragment_size)
1171                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1172         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1173                                wpa_s, NULL);
1174         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1175         return 0;
1176 }
1177
1178
1179 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1180                                  const u8 *dev_addr, const u8 *bssid,
1181                                  const char *pin, int p2p_group, u16 dev_pw_id,
1182                                  const u8 *peer_pubkey_hash,
1183                                  const u8 *ssid_val, size_t ssid_len, int freq)
1184 {
1185         struct wpa_ssid *ssid;
1186         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1187         unsigned int rpin = 0;
1188         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1189
1190 #ifdef CONFIG_AP
1191         if (wpa_s->ap_iface) {
1192                 wpa_printf(MSG_DEBUG,
1193                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1194                 return -1;
1195         }
1196 #endif /* CONFIG_AP */
1197         wpas_clear_wps(wpa_s);
1198         if (bssid && is_zero_ether_addr(bssid))
1199                 bssid = NULL;
1200         ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1201         if (ssid == NULL) {
1202                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1203                 return -1;
1204         }
1205         ssid->temporary = 1;
1206         ssid->p2p_group = p2p_group;
1207         /*
1208          * When starting a regular WPS process (not P2P group formation)
1209          * the registrar/final station can be either AP or PCP
1210          * so use a "don't care" value for the pbss flag.
1211          */
1212         if (!p2p_group)
1213                 ssid->pbss = 2;
1214         if (ssid_val) {
1215                 ssid->ssid = os_malloc(ssid_len);
1216                 if (ssid->ssid) {
1217                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1218                         ssid->ssid_len = ssid_len;
1219                 }
1220         }
1221         if (peer_pubkey_hash) {
1222                 os_memcpy(hash, " pkhash=", 8);
1223                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1224                                            peer_pubkey_hash,
1225                                            WPS_OOB_PUBKEY_HASH_LEN);
1226         } else {
1227                 hash[0] = '\0';
1228         }
1229 #ifdef CONFIG_P2P
1230         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1231                 os_free(ssid->ssid);
1232                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1233                 if (ssid->ssid) {
1234                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1235                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1236                                   ssid->ssid_len);
1237                         if (wpa_s->go_params->freq > 56160) {
1238                                 /* P2P in 60 GHz uses PBSS */
1239                                 ssid->pbss = 1;
1240                         }
1241                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1242                                           "SSID", ssid->ssid, ssid->ssid_len);
1243                 }
1244         }
1245 #endif /* CONFIG_P2P */
1246         if (pin)
1247                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1248                             pin, dev_pw_id, hash);
1249         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1250                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1251                             dev_pw_id, hash);
1252         } else {
1253                 if (wps_generate_pin(&rpin) < 0) {
1254                         wpa_printf(MSG_DEBUG, "WPS: Could not generate PIN");
1255                         return -1;
1256                 }
1257                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1258                             rpin, dev_pw_id, hash);
1259         }
1260         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1261                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1262                 return -1;
1263         }
1264         if (wpa_s->wps_fragment_size)
1265                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1266         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1267                                wpa_s, NULL);
1268         wpa_s->wps_ap_iter = 1;
1269         wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1270         return rpin;
1271 }
1272
1273
1274 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1275                        const char *pin, int p2p_group, u16 dev_pw_id)
1276 {
1277         os_get_reltime(&wpa_s->wps_pin_start_time);
1278         return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1279                                      dev_pw_id, NULL, NULL, 0, 0);
1280 }
1281
1282
1283 void wpas_wps_pbc_overlap(struct wpa_supplicant *wpa_s)
1284 {
1285         union wps_event_data data;
1286
1287         os_memset(&data, 0, sizeof(data));
1288         data.fail.config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
1289         data.fail.error_indication = WPS_EI_NO_ERROR;
1290         /*
1291          * Call wpas_notify_wps_event_fail() directly instead of through
1292          * wpa_supplicant_wps_event() which would end up registering unnecessary
1293          * timeouts (those are only for the case where the failure happens
1294          * during an EAP-WSC exchange).
1295          */
1296         wpas_notify_wps_event_fail(wpa_s, &data.fail);
1297 }
1298
1299 /* Cancel the wps pbc/pin requests */
1300 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1301 {
1302 #ifdef CONFIG_AP
1303         if (wpa_s->ap_iface) {
1304                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1305                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1306         }
1307 #endif /* CONFIG_AP */
1308
1309         if (wpa_s->wpa_state == WPA_SCANNING ||
1310             wpa_s->wpa_state == WPA_DISCONNECTED) {
1311                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1312                 wpa_supplicant_cancel_scan(wpa_s);
1313                 wpas_clear_wps(wpa_s);
1314         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1315                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1316                            "deauthenticate");
1317                 wpa_s->own_disconnect_req = 1;
1318                 wpa_supplicant_deauthenticate(wpa_s,
1319                                               WLAN_REASON_DEAUTH_LEAVING);
1320                 wpas_clear_wps(wpa_s);
1321         } else {
1322                 wpas_wps_reenable_networks(wpa_s);
1323                 wpas_wps_clear_ap_info(wpa_s);
1324                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1325                     0)
1326                         wpas_clear_wps(wpa_s);
1327         }
1328
1329         wpa_s->after_wps = 0;
1330
1331         return 0;
1332 }
1333
1334
1335 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1336                        const char *pin, struct wps_new_ap_settings *settings)
1337 {
1338         struct wpa_ssid *ssid;
1339         char val[200];
1340         char *pos, *end;
1341         int res;
1342
1343 #ifdef CONFIG_AP
1344         if (wpa_s->ap_iface) {
1345                 wpa_printf(MSG_DEBUG,
1346                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1347                 return -1;
1348         }
1349 #endif /* CONFIG_AP */
1350         if (!pin)
1351                 return -1;
1352         wpas_clear_wps(wpa_s);
1353         ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1354         if (ssid == NULL)
1355                 return -1;
1356         ssid->temporary = 1;
1357         pos = val;
1358         end = pos + sizeof(val);
1359         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1360         if (os_snprintf_error(end - pos, res))
1361                 return -1;
1362         pos += res;
1363         if (settings) {
1364                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1365                                   "new_encr=%s new_key=%s",
1366                                   settings->ssid_hex, settings->auth,
1367                                   settings->encr, settings->key_hex);
1368                 if (os_snprintf_error(end - pos, res))
1369                         return -1;
1370                 pos += res;
1371         }
1372         res = os_snprintf(pos, end - pos, "\"");
1373         if (os_snprintf_error(end - pos, res))
1374                 return -1;
1375         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1376                 return -1;
1377         if (wpa_s->wps_fragment_size)
1378                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1379         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1380                                wpa_s, NULL);
1381         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1382         return 0;
1383 }
1384
1385
1386 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1387                                const u8 *p2p_dev_addr, const u8 *psk,
1388                                size_t psk_len)
1389 {
1390         if (is_zero_ether_addr(p2p_dev_addr)) {
1391                 wpa_printf(MSG_DEBUG,
1392                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1393                            MAC2STR(mac_addr));
1394         } else {
1395                 wpa_printf(MSG_DEBUG,
1396                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1397                            " P2P Device Addr " MACSTR,
1398                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1399         }
1400         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1401
1402         /* TODO */
1403
1404         return 0;
1405 }
1406
1407
1408 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1409                                    const struct wps_device_data *dev)
1410 {
1411         char uuid[40], txt[400];
1412         int len;
1413         char devtype[WPS_DEV_TYPE_BUFSIZE];
1414         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1415                 return;
1416         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1417         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1418                           " [%s|%s|%s|%s|%s|%s]",
1419                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1420                           dev->manufacturer, dev->model_name,
1421                           dev->model_number, dev->serial_number,
1422                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1423                                                sizeof(devtype)));
1424         if (!os_snprintf_error(sizeof(txt), len))
1425                 wpa_printf(MSG_INFO, "%s", txt);
1426 }
1427
1428
1429 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1430                                     u16 sel_reg_config_methods)
1431 {
1432 #ifdef CONFIG_WPS_ER
1433         struct wpa_supplicant *wpa_s = ctx;
1434
1435         if (wpa_s->wps_er == NULL)
1436                 return;
1437         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1438                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1439                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1440         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1441                            sel_reg_config_methods);
1442 #endif /* CONFIG_WPS_ER */
1443 }
1444
1445
1446 static u16 wps_fix_config_methods(u16 config_methods)
1447 {
1448         if ((config_methods &
1449              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1450               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1451                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1452                            "virtual_display for WPS 2.0 compliance");
1453                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1454         }
1455         if ((config_methods &
1456              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1457               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1458                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1459                            "virtual_push_button for WPS 2.0 compliance");
1460                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1461         }
1462
1463         return config_methods;
1464 }
1465
1466
1467 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1468                               struct wps_context *wps)
1469 {
1470         char buf[50];
1471         const char *src;
1472
1473         if (is_nil_uuid(wpa_s->conf->uuid)) {
1474                 struct wpa_supplicant *first;
1475                 first = wpa_s->global->ifaces;
1476                 while (first && first->next)
1477                         first = first->next;
1478                 if (first && first != wpa_s) {
1479                         if (wps != wpa_s->global->ifaces->wps)
1480                                 os_memcpy(wps->uuid,
1481                                           wpa_s->global->ifaces->wps->uuid,
1482                                           WPS_UUID_LEN);
1483                         src = "from the first interface";
1484                 } else {
1485                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1486                         src = "based on MAC address";
1487                 }
1488         } else {
1489                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1490                 src = "based on configuration";
1491         }
1492
1493         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1494         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1495 }
1496
1497
1498 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1499                                        struct wps_context *wps)
1500 {
1501         wpabuf_free(wps->dev.vendor_ext_m1);
1502         wps->dev.vendor_ext_m1 = NULL;
1503
1504         if (wpa_s->conf->wps_vendor_ext_m1) {
1505                 wps->dev.vendor_ext_m1 =
1506                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1507                 if (!wps->dev.vendor_ext_m1) {
1508                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1509                                    "allocate memory for vendor_ext_m1");
1510                 }
1511         }
1512 }
1513
1514
1515 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1516 {
1517         struct wps_context *wps;
1518         struct wps_registrar_config rcfg;
1519         struct hostapd_hw_modes *modes;
1520         u16 m;
1521
1522         wps = os_zalloc(sizeof(*wps));
1523         if (wps == NULL)
1524                 return -1;
1525
1526         wps->cred_cb = wpa_supplicant_wps_cred;
1527         wps->event_cb = wpa_supplicant_wps_event;
1528         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1529         wps->cb_ctx = wpa_s;
1530
1531         wps->dev.device_name = wpa_s->conf->device_name;
1532         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1533         wps->dev.model_name = wpa_s->conf->model_name;
1534         wps->dev.model_number = wpa_s->conf->model_number;
1535         wps->dev.serial_number = wpa_s->conf->serial_number;
1536         wps->config_methods =
1537                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1538         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1539             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1540                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1541                            "methods are not allowed at the same time");
1542                 os_free(wps);
1543                 return -1;
1544         }
1545         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1546         wps->dev.config_methods = wps->config_methods;
1547         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1548                   WPS_DEV_TYPE_LEN);
1549
1550         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1551         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1552                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1553
1554         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1555
1556         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1557         modes = wpa_s->hw.modes;
1558         if (modes) {
1559                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1560                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1561                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1562                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1563                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1564                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1565                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1566                                 wps->dev.rf_bands |= WPS_RF_60GHZ;
1567                 }
1568         }
1569         if (wps->dev.rf_bands == 0) {
1570                 /*
1571                  * Default to claiming support for both bands if the driver
1572                  * does not provide support for fetching supported bands.
1573                  */
1574                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1575         }
1576         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1577         wpas_wps_set_uuid(wpa_s, wps);
1578
1579         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1580         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1581
1582         os_memset(&rcfg, 0, sizeof(rcfg));
1583         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1584         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1585         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1586         rcfg.cb_ctx = wpa_s;
1587
1588         wps->registrar = wps_registrar_init(wps, &rcfg);
1589         if (wps->registrar == NULL) {
1590                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1591                 os_free(wps);
1592                 return -1;
1593         }
1594
1595         wpa_s->wps = wps;
1596
1597         return 0;
1598 }
1599
1600
1601 #ifdef CONFIG_WPS_ER
1602 static void wpas_wps_nfc_clear(struct wps_context *wps)
1603 {
1604         wps->ap_nfc_dev_pw_id = 0;
1605         wpabuf_free(wps->ap_nfc_dh_pubkey);
1606         wps->ap_nfc_dh_pubkey = NULL;
1607         wpabuf_free(wps->ap_nfc_dh_privkey);
1608         wps->ap_nfc_dh_privkey = NULL;
1609         wpabuf_free(wps->ap_nfc_dev_pw);
1610         wps->ap_nfc_dev_pw = NULL;
1611 }
1612 #endif /* CONFIG_WPS_ER */
1613
1614
1615 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1616 {
1617         wpas_wps_assoc_with_cred_cancel(wpa_s);
1618         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1619         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1620         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1621         wpas_wps_clear_ap_info(wpa_s);
1622
1623 #ifdef CONFIG_P2P
1624         eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1625 #endif /* CONFIG_P2P */
1626
1627         if (wpa_s->wps == NULL)
1628                 return;
1629
1630 #ifdef CONFIG_WPS_ER
1631         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1632         wpa_s->wps_er = NULL;
1633         wpas_wps_nfc_clear(wpa_s->wps);
1634 #endif /* CONFIG_WPS_ER */
1635
1636         wps_registrar_deinit(wpa_s->wps->registrar);
1637         wpabuf_free(wpa_s->wps->dh_pubkey);
1638         wpabuf_free(wpa_s->wps->dh_privkey);
1639         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1640         os_free(wpa_s->wps->network_key);
1641         os_free(wpa_s->wps);
1642         wpa_s->wps = NULL;
1643 }
1644
1645
1646 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1647                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1648 {
1649         struct wpabuf *wps_ie;
1650
1651         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1652                 return -1;
1653
1654         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1655         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1656                 if (!wps_ie) {
1657                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1658                         return 0;
1659                 }
1660
1661                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1662                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1663                                    "without active PBC Registrar");
1664                         wpabuf_free(wps_ie);
1665                         return 0;
1666                 }
1667
1668                 /* TODO: overlap detection */
1669                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1670                            "(Active PBC)");
1671                 wpabuf_free(wps_ie);
1672                 return 1;
1673         }
1674
1675         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1676                 if (!wps_ie) {
1677                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1678                         return 0;
1679                 }
1680
1681                 /*
1682                  * Start with WPS APs that advertise our address as an
1683                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1684                  * allow any WPS AP after couple of scans since some APs do not
1685                  * set Selected Registrar attribute properly when using
1686                  * external Registrar.
1687                  */
1688                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1689                         struct os_reltime age;
1690
1691                         os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1692
1693                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1694                             age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1695                                 wpa_printf(MSG_DEBUG,
1696                                            "   skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1697                                            wpa_s->scan_runs, (int) age.sec);
1698                                 wpabuf_free(wps_ie);
1699                                 return 0;
1700                         }
1701                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1702                 } else {
1703                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1704                                    "(Authorized MAC or Active PIN)");
1705                 }
1706                 wpabuf_free(wps_ie);
1707                 return 1;
1708         }
1709
1710         if (wps_ie) {
1711                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1712                 wpabuf_free(wps_ie);
1713                 return 1;
1714         }
1715
1716         return -1;
1717 }
1718
1719
1720 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1721                               struct wpa_ssid *ssid,
1722                               struct wpa_bss *bss)
1723 {
1724         struct wpabuf *wps_ie = NULL;
1725         int ret = 0;
1726
1727         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1728                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1729                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1730                         /* allow wildcard SSID for WPS PBC */
1731                         ret = 1;
1732                 }
1733         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1734                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1735                 if (wps_ie &&
1736                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1737                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1738                         /* allow wildcard SSID for WPS PIN */
1739                         ret = 1;
1740                 }
1741         }
1742
1743         if (!ret && ssid->bssid_set &&
1744             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1745                 /* allow wildcard SSID due to hardcoded BSSID match */
1746                 ret = 1;
1747         }
1748
1749 #ifdef CONFIG_WPS_STRICT
1750         if (wps_ie) {
1751                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1752                                                    0, bss->bssid) < 0)
1753                         ret = 0;
1754                 if (bss->beacon_ie_len) {
1755                         struct wpabuf *bcn_wps;
1756                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1757                                 bss, WPS_IE_VENDOR_TYPE);
1758                         if (bcn_wps == NULL) {
1759                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1760                                            "missing from AP Beacon");
1761                                 ret = 0;
1762                         } else {
1763                                 if (wps_validate_beacon(wps_ie) < 0)
1764                                         ret = 0;
1765                                 wpabuf_free(bcn_wps);
1766                         }
1767                 }
1768         }
1769 #endif /* CONFIG_WPS_STRICT */
1770
1771         wpabuf_free(wps_ie);
1772
1773         return ret;
1774 }
1775
1776
1777 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1778                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1779 {
1780         const u8 *sel_uuid;
1781         struct wpabuf *wps_ie;
1782         int ret = 0;
1783         size_t i;
1784
1785         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1786                 return 0;
1787
1788         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1789                    "present in scan results; selected BSSID " MACSTR,
1790                    MAC2STR(selected->bssid));
1791
1792         /* Make sure that only one AP is in active PBC mode */
1793         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1794         if (wps_ie) {
1795                 sel_uuid = wps_get_uuid_e(wps_ie);
1796                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1797                             sel_uuid, UUID_LEN);
1798         } else {
1799                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1800                            "WPS IE?!");
1801                 sel_uuid = NULL;
1802         }
1803
1804         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1805                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1806
1807                 if (!ap->pbc_active ||
1808                     os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1809                         continue;
1810
1811                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1812                            MACSTR, MAC2STR(ap->bssid));
1813                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1814                             ap->uuid, UUID_LEN);
1815                 if (sel_uuid == NULL ||
1816                     os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1817                         ret = 1; /* PBC overlap */
1818                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1819                                 MACSTR " and " MACSTR,
1820                                 MAC2STR(selected->bssid),
1821                                 MAC2STR(ap->bssid));
1822                         break;
1823                 }
1824
1825                 /* TODO: verify that this is reasonable dual-band situation */
1826         }
1827
1828         wpabuf_free(wps_ie);
1829
1830         return ret;
1831 }
1832
1833
1834 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1835 {
1836         struct wpa_bss *bss;
1837         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1838
1839         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1840                 return;
1841
1842         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1843                 struct wpabuf *ie;
1844                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1845                 if (!ie)
1846                         continue;
1847                 if (wps_is_selected_pbc_registrar(ie))
1848                         pbc++;
1849                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1850                         auth++;
1851                 else if (wps_is_selected_pin_registrar(ie))
1852                         pin++;
1853                 else
1854                         wps++;
1855                 wpabuf_free(ie);
1856         }
1857
1858         if (pbc)
1859                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1860         else if (auth)
1861                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1862         else if (pin)
1863                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1864         else if (wps)
1865                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1866 }
1867
1868
1869 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1870 {
1871         struct wpa_ssid *ssid;
1872
1873         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1874                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1875                         return 1;
1876         }
1877
1878         return 0;
1879 }
1880
1881
1882 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1883                               char *end)
1884 {
1885         struct wpabuf *wps_ie;
1886         int ret;
1887
1888         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1889         if (wps_ie == NULL)
1890                 return 0;
1891
1892         ret = wps_attr_text(wps_ie, buf, end);
1893         wpabuf_free(wps_ie);
1894         return ret;
1895 }
1896
1897
1898 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1899 {
1900 #ifdef CONFIG_WPS_ER
1901         if (wpa_s->wps_er) {
1902                 wps_er_refresh(wpa_s->wps_er);
1903                 return 0;
1904         }
1905         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1906         if (wpa_s->wps_er == NULL)
1907                 return -1;
1908         return 0;
1909 #else /* CONFIG_WPS_ER */
1910         return 0;
1911 #endif /* CONFIG_WPS_ER */
1912 }
1913
1914
1915 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1916 {
1917 #ifdef CONFIG_WPS_ER
1918         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1919         wpa_s->wps_er = NULL;
1920 #endif /* CONFIG_WPS_ER */
1921 }
1922
1923
1924 #ifdef CONFIG_WPS_ER
1925 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1926                         const char *uuid, const char *pin)
1927 {
1928         u8 u[UUID_LEN];
1929         const u8 *use_uuid = NULL;
1930         u8 addr_buf[ETH_ALEN];
1931
1932         if (os_strcmp(uuid, "any") == 0) {
1933         } else if (uuid_str2bin(uuid, u) == 0) {
1934                 use_uuid = u;
1935         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1936                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1937                 if (use_uuid == NULL)
1938                         return -1;
1939         } else
1940                 return -1;
1941         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1942                                      use_uuid,
1943                                      (const u8 *) pin, os_strlen(pin), 300);
1944 }
1945
1946
1947 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1948 {
1949         u8 u[UUID_LEN], *use_uuid = NULL;
1950         u8 addr[ETH_ALEN], *use_addr = NULL;
1951
1952         if (uuid_str2bin(uuid, u) == 0)
1953                 use_uuid = u;
1954         else if (hwaddr_aton(uuid, addr) == 0)
1955                 use_addr = addr;
1956         else
1957                 return -1;
1958         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1959 }
1960
1961
1962 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1963                       const char *pin)
1964 {
1965         u8 u[UUID_LEN], *use_uuid = NULL;
1966         u8 addr[ETH_ALEN], *use_addr = NULL;
1967
1968         if (uuid_str2bin(uuid, u) == 0)
1969                 use_uuid = u;
1970         else if (hwaddr_aton(uuid, addr) == 0)
1971                 use_addr = addr;
1972         else
1973                 return -1;
1974
1975         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1976                             os_strlen(pin));
1977 }
1978
1979
1980 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1981                                     struct wps_credential *cred)
1982 {
1983         os_memset(cred, 0, sizeof(*cred));
1984         if (ssid->ssid_len > SSID_MAX_LEN)
1985                 return -1;
1986         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1987         cred->ssid_len = ssid->ssid_len;
1988         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1989                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1990                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1991                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1992                         cred->encr_type = WPS_ENCR_AES;
1993                 else
1994                         cred->encr_type = WPS_ENCR_TKIP;
1995                 if (ssid->passphrase) {
1996                         cred->key_len = os_strlen(ssid->passphrase);
1997                         if (cred->key_len >= 64)
1998                                 return -1;
1999                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
2000                 } else if (ssid->psk_set) {
2001                         cred->key_len = 32;
2002                         os_memcpy(cred->key, ssid->psk, 32);
2003                 } else
2004                         return -1;
2005         } else {
2006                 cred->auth_type = WPS_AUTH_OPEN;
2007                 cred->encr_type = WPS_ENCR_NONE;
2008         }
2009
2010         return 0;
2011 }
2012
2013
2014 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
2015                            int id)
2016 {
2017         u8 u[UUID_LEN], *use_uuid = NULL;
2018         u8 addr[ETH_ALEN], *use_addr = NULL;
2019         struct wpa_ssid *ssid;
2020         struct wps_credential cred;
2021         int ret;
2022
2023         if (uuid_str2bin(uuid, u) == 0)
2024                 use_uuid = u;
2025         else if (hwaddr_aton(uuid, addr) == 0)
2026                 use_addr = addr;
2027         else
2028                 return -1;
2029         ssid = wpa_config_get_network(wpa_s->conf, id);
2030         if (ssid == NULL || ssid->ssid == NULL)
2031                 return -1;
2032
2033         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2034                 return -1;
2035         ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
2036         os_memset(&cred, 0, sizeof(cred));
2037         return ret;
2038 }
2039
2040
2041 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
2042                        const char *pin, struct wps_new_ap_settings *settings)
2043 {
2044         u8 u[UUID_LEN], *use_uuid = NULL;
2045         u8 addr[ETH_ALEN], *use_addr = NULL;
2046         struct wps_credential cred;
2047         size_t len;
2048
2049         if (uuid_str2bin(uuid, u) == 0)
2050                 use_uuid = u;
2051         else if (hwaddr_aton(uuid, addr) == 0)
2052                 use_addr = addr;
2053         else
2054                 return -1;
2055         if (settings->ssid_hex == NULL || settings->auth == NULL ||
2056             settings->encr == NULL || settings->key_hex == NULL)
2057                 return -1;
2058
2059         os_memset(&cred, 0, sizeof(cred));
2060         len = os_strlen(settings->ssid_hex);
2061         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2062             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2063                 return -1;
2064         cred.ssid_len = len / 2;
2065
2066         len = os_strlen(settings->key_hex);
2067         if ((len & 1) || len > 2 * sizeof(cred.key) ||
2068             hexstr2bin(settings->key_hex, cred.key, len / 2))
2069                 return -1;
2070         cred.key_len = len / 2;
2071
2072         if (os_strcmp(settings->auth, "OPEN") == 0)
2073                 cred.auth_type = WPS_AUTH_OPEN;
2074         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2075                 cred.auth_type = WPS_AUTH_WPAPSK;
2076         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2077                 cred.auth_type = WPS_AUTH_WPA2PSK;
2078         else
2079                 return -1;
2080
2081         if (os_strcmp(settings->encr, "NONE") == 0)
2082                 cred.encr_type = WPS_ENCR_NONE;
2083 #ifdef CONFIG_TESTING_OPTIONS
2084         else if (os_strcmp(settings->encr, "WEP") == 0)
2085                 cred.encr_type = WPS_ENCR_WEP;
2086 #endif /* CONFIG_TESTING_OPTIONS */
2087         else if (os_strcmp(settings->encr, "TKIP") == 0)
2088                 cred.encr_type = WPS_ENCR_TKIP;
2089         else if (os_strcmp(settings->encr, "CCMP") == 0)
2090                 cred.encr_type = WPS_ENCR_AES;
2091         else
2092                 return -1;
2093
2094         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2095                              (const u8 *) pin, os_strlen(pin), &cred);
2096 }
2097
2098
2099 #ifdef CONFIG_WPS_NFC
2100 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2101                                              int ndef, const char *uuid)
2102 {
2103         struct wpabuf *ret;
2104         u8 u[UUID_LEN], *use_uuid = NULL;
2105         u8 addr[ETH_ALEN], *use_addr = NULL;
2106
2107         if (!wpa_s->wps_er)
2108                 return NULL;
2109
2110         if (uuid_str2bin(uuid, u) == 0)
2111                 use_uuid = u;
2112         else if (hwaddr_aton(uuid, addr) == 0)
2113                 use_addr = addr;
2114         else
2115                 return NULL;
2116
2117         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2118         if (ndef && ret) {
2119                 struct wpabuf *tmp;
2120                 tmp = ndef_build_wifi(ret);
2121                 wpabuf_free(ret);
2122                 if (tmp == NULL)
2123                         return NULL;
2124                 ret = tmp;
2125         }
2126
2127         return ret;
2128 }
2129 #endif /* CONFIG_WPS_NFC */
2130
2131
2132 static int callbacks_pending = 0;
2133
2134 static void wpas_wps_terminate_cb(void *ctx)
2135 {
2136         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2137         if (--callbacks_pending <= 0)
2138                 eloop_terminate();
2139 }
2140 #endif /* CONFIG_WPS_ER */
2141
2142
2143 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2144 {
2145 #ifdef CONFIG_WPS_ER
2146         if (wpa_s->wps_er) {
2147                 callbacks_pending++;
2148                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2149                 wpa_s->wps_er = NULL;
2150                 return 1;
2151         }
2152 #endif /* CONFIG_WPS_ER */
2153         return 0;
2154 }
2155
2156
2157 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2158 {
2159         struct wps_context *wps = wpa_s->wps;
2160
2161         if (wps == NULL)
2162                 return;
2163
2164         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2165                 wps->config_methods = wps_config_methods_str2bin(
2166                         wpa_s->conf->config_methods);
2167                 if ((wps->config_methods &
2168                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2169                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2170                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2171                                    "config methods are not allowed at the "
2172                                    "same time");
2173                         wps->config_methods &= ~WPS_CONFIG_LABEL;
2174                 }
2175         }
2176         wps->config_methods = wps_fix_config_methods(wps->config_methods);
2177         wps->dev.config_methods = wps->config_methods;
2178
2179         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2180                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2181                           WPS_DEV_TYPE_LEN);
2182
2183         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2184                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2185                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2186                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2187         }
2188
2189         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2190                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2191
2192         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2193                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2194
2195         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2196                 wpas_wps_set_uuid(wpa_s, wps);
2197
2198         if (wpa_s->conf->changed_parameters &
2199             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2200                 /* Update pointers to make sure they refer current values */
2201                 wps->dev.device_name = wpa_s->conf->device_name;
2202                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2203                 wps->dev.model_name = wpa_s->conf->model_name;
2204                 wps->dev.model_number = wpa_s->conf->model_number;
2205                 wps->dev.serial_number = wpa_s->conf->serial_number;
2206         }
2207 }
2208
2209
2210 #ifdef CONFIG_WPS_NFC
2211
2212 #ifdef CONFIG_WPS_ER
2213 static struct wpabuf *
2214 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2215                               struct wpa_ssid *ssid)
2216 {
2217         struct wpabuf *ret;
2218         struct wps_credential cred;
2219
2220         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2221                 return NULL;
2222
2223         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2224
2225         if (ndef && ret) {
2226                 struct wpabuf *tmp;
2227                 tmp = ndef_build_wifi(ret);
2228                 wpabuf_free(ret);
2229                 if (tmp == NULL)
2230                         return NULL;
2231                 ret = tmp;
2232         }
2233
2234         return ret;
2235 }
2236 #endif /* CONFIG_WPS_ER */
2237
2238
2239 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2240                                           int ndef, const char *id_str)
2241 {
2242 #ifdef CONFIG_WPS_ER
2243         if (id_str) {
2244                 int id;
2245                 char *end = NULL;
2246                 struct wpa_ssid *ssid;
2247
2248                 id = strtol(id_str, &end, 10);
2249                 if (end && *end)
2250                         return NULL;
2251
2252                 ssid = wpa_config_get_network(wpa_s->conf, id);
2253                 if (ssid == NULL)
2254                         return NULL;
2255                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2256         }
2257 #endif /* CONFIG_WPS_ER */
2258 #ifdef CONFIG_AP
2259         if (wpa_s->ap_iface)
2260                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2261 #endif /* CONFIG_AP */
2262         return NULL;
2263 }
2264
2265
2266 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2267 {
2268         if (wpa_s->conf->wps_nfc_pw_from_config) {
2269                 return wps_nfc_token_build(ndef,
2270                                            wpa_s->conf->wps_nfc_dev_pw_id,
2271                                            wpa_s->conf->wps_nfc_dh_pubkey,
2272                                            wpa_s->conf->wps_nfc_dev_pw);
2273         }
2274
2275         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2276                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2277                                  &wpa_s->conf->wps_nfc_dh_privkey,
2278                                  &wpa_s->conf->wps_nfc_dev_pw);
2279 }
2280
2281
2282 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2283                        const u8 *bssid,
2284                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2285                        int p2p_group, const u8 *peer_pubkey_hash,
2286                        const u8 *ssid, size_t ssid_len, int freq)
2287 {
2288         struct wps_context *wps = wpa_s->wps;
2289         char pw[32 * 2 + 1];
2290
2291         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2292                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2293                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2294         }
2295
2296         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2297             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2298                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2299                            "cannot start NFC-triggered connection");
2300                 return -1;
2301         }
2302
2303         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2304                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2305                            "cannot start NFC-triggered connection", dev_pw_id);
2306                 return -1;
2307         }
2308
2309         dh5_free(wps->dh_ctx);
2310         wpabuf_free(wps->dh_pubkey);
2311         wpabuf_free(wps->dh_privkey);
2312         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2313         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2314         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2315                 wps->dh_ctx = NULL;
2316                 wpabuf_free(wps->dh_pubkey);
2317                 wps->dh_pubkey = NULL;
2318                 wpabuf_free(wps->dh_privkey);
2319                 wps->dh_privkey = NULL;
2320                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2321                 return -1;
2322         }
2323         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2324         if (wps->dh_ctx == NULL) {
2325                 wpabuf_free(wps->dh_pubkey);
2326                 wps->dh_pubkey = NULL;
2327                 wpabuf_free(wps->dh_privkey);
2328                 wps->dh_privkey = NULL;
2329                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2330                 return -1;
2331         }
2332
2333         if (dev_pw) {
2334                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2335                                            wpabuf_head(dev_pw),
2336                                            wpabuf_len(dev_pw));
2337         }
2338         return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2339                                      dev_pw ? pw : NULL,
2340                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2341                                      ssid, ssid_len, freq);
2342 }
2343
2344
2345 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2346                              struct wps_parse_attr *attr)
2347 {
2348         /*
2349          * Disable existing networks temporarily to allow the newly learned
2350          * credential to be preferred. Enable the temporarily disabled networks
2351          * after 10 seconds.
2352          */
2353         wpas_wps_temp_disable(wpa_s, NULL);
2354         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2355                                NULL);
2356
2357         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2358                 return -1;
2359
2360         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2361                 return 0;
2362
2363         if (attr->ap_channel) {
2364                 u16 chan = WPA_GET_BE16(attr->ap_channel);
2365                 int freq = 0;
2366
2367                 if (chan >= 1 && chan <= 13)
2368                         freq = 2407 + 5 * chan;
2369                 else if (chan == 14)
2370                         freq = 2484;
2371                 else if (chan >= 30)
2372                         freq = 5000 + 5 * chan;
2373
2374                 if (freq) {
2375                         wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2376                                    chan, freq);
2377                         wpa_s->after_wps = 5;
2378                         wpa_s->wps_freq = freq;
2379                 }
2380         }
2381
2382         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2383                    "based on the received credential added");
2384         wpa_s->normal_scans = 0;
2385         wpa_supplicant_reinit_autoscan(wpa_s);
2386         wpa_s->disconnected = 0;
2387         wpa_s->reassociate = 1;
2388
2389         wpa_supplicant_cancel_sched_scan(wpa_s);
2390         wpa_supplicant_req_scan(wpa_s, 0, 0);
2391
2392         return 0;
2393 }
2394
2395
2396 #ifdef CONFIG_WPS_ER
2397 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2398                                            struct wps_parse_attr *attr)
2399 {
2400         return wps_registrar_add_nfc_password_token(
2401                 wpa_s->wps->registrar, attr->oob_dev_password,
2402                 attr->oob_dev_password_len);
2403 }
2404 #endif /* CONFIG_WPS_ER */
2405
2406
2407 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2408                                     const struct wpabuf *wps)
2409 {
2410         struct wps_parse_attr attr;
2411
2412         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2413
2414         if (wps_parse_msg(wps, &attr)) {
2415                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2416                 return -1;
2417         }
2418
2419         if (attr.num_cred)
2420                 return wpas_wps_use_cred(wpa_s, &attr);
2421
2422 #ifdef CONFIG_WPS_ER
2423         if (attr.oob_dev_password)
2424                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2425 #endif /* CONFIG_WPS_ER */
2426
2427         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2428         return -1;
2429 }
2430
2431
2432 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2433                           const struct wpabuf *data, int forced_freq)
2434 {
2435         const struct wpabuf *wps = data;
2436         struct wpabuf *tmp = NULL;
2437         int ret;
2438
2439         if (wpabuf_len(data) < 4)
2440                 return -1;
2441
2442         if (*wpabuf_head_u8(data) != 0x10) {
2443                 /* Assume this contains full NDEF record */
2444                 tmp = ndef_parse_wifi(data);
2445                 if (tmp == NULL) {
2446 #ifdef CONFIG_P2P
2447                         tmp = ndef_parse_p2p(data);
2448                         if (tmp) {
2449                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2450                                                                forced_freq);
2451                                 wpabuf_free(tmp);
2452                                 return ret;
2453                         }
2454 #endif /* CONFIG_P2P */
2455                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2456                         return -1;
2457                 }
2458                 wps = tmp;
2459         }
2460
2461         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2462         wpabuf_free(tmp);
2463         return ret;
2464 }
2465
2466
2467 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2468                                           int ndef)
2469 {
2470         struct wpabuf *ret;
2471
2472         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2473             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2474                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2475                 return NULL;
2476
2477         ret = wps_build_nfc_handover_req(wpa_s->wps,
2478                                          wpa_s->conf->wps_nfc_dh_pubkey);
2479
2480         if (ndef && ret) {
2481                 struct wpabuf *tmp;
2482                 tmp = ndef_build_wifi(ret);
2483                 wpabuf_free(ret);
2484                 if (tmp == NULL)
2485                         return NULL;
2486                 ret = tmp;
2487         }
2488
2489         return ret;
2490 }
2491
2492
2493 #ifdef CONFIG_WPS_NFC
2494
2495 static struct wpabuf *
2496 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2497                              const char *uuid)
2498 {
2499 #ifdef CONFIG_WPS_ER
2500         struct wpabuf *ret;
2501         u8 u[UUID_LEN], *use_uuid = NULL;
2502         u8 addr[ETH_ALEN], *use_addr = NULL;
2503         struct wps_context *wps = wpa_s->wps;
2504
2505         if (wps == NULL)
2506                 return NULL;
2507
2508         if (uuid == NULL)
2509                 return NULL;
2510         if (uuid_str2bin(uuid, u) == 0)
2511                 use_uuid = u;
2512         else if (hwaddr_aton(uuid, addr) == 0)
2513                 use_addr = addr;
2514         else
2515                 return NULL;
2516
2517         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2518                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2519                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2520                         return NULL;
2521         }
2522
2523         wpas_wps_nfc_clear(wps);
2524         wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2525         wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2526         wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2527         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2528                 wpas_wps_nfc_clear(wps);
2529                 return NULL;
2530         }
2531
2532         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2533                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2534         if (ndef && ret) {
2535                 struct wpabuf *tmp;
2536                 tmp = ndef_build_wifi(ret);
2537                 wpabuf_free(ret);
2538                 if (tmp == NULL)
2539                         return NULL;
2540                 ret = tmp;
2541         }
2542
2543         return ret;
2544 #else /* CONFIG_WPS_ER */
2545         return NULL;
2546 #endif /* CONFIG_WPS_ER */
2547 }
2548 #endif /* CONFIG_WPS_NFC */
2549
2550
2551 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2552                                           int ndef, int cr, const char *uuid)
2553 {
2554         struct wpabuf *ret;
2555         if (!cr)
2556                 return NULL;
2557         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2558         if (ret)
2559                 return ret;
2560         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2561 }
2562
2563
2564 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2565                                         const struct wpabuf *data)
2566 {
2567         struct wpabuf *wps;
2568         int ret = -1;
2569         u16 wsc_len;
2570         const u8 *pos;
2571         struct wpabuf msg;
2572         struct wps_parse_attr attr;
2573         u16 dev_pw_id;
2574         const u8 *bssid = NULL;
2575         int freq = 0;
2576
2577         wps = ndef_parse_wifi(data);
2578         if (wps == NULL)
2579                 return -1;
2580         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2581                    "payload from NFC connection handover");
2582         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2583         if (wpabuf_len(wps) < 2) {
2584                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2585                            "Message");
2586                 goto out;
2587         }
2588         pos = wpabuf_head(wps);
2589         wsc_len = WPA_GET_BE16(pos);
2590         if (wsc_len > wpabuf_len(wps) - 2) {
2591                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2592                            "in Wi-Fi Handover Select Message", wsc_len);
2593                 goto out;
2594         }
2595         pos += 2;
2596
2597         wpa_hexdump(MSG_DEBUG,
2598                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2599                     pos, wsc_len);
2600         if (wsc_len < wpabuf_len(wps) - 2) {
2601                 wpa_hexdump(MSG_DEBUG,
2602                             "WPS: Ignore extra data after WSC attributes",
2603                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2604         }
2605
2606         wpabuf_set(&msg, pos, wsc_len);
2607         ret = wps_parse_msg(&msg, &attr);
2608         if (ret < 0) {
2609                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2610                            "Wi-Fi Handover Select Message");
2611                 goto out;
2612         }
2613
2614         if (attr.oob_dev_password == NULL ||
2615             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2616                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2617                            "included in Wi-Fi Handover Select Message");
2618                 ret = -1;
2619                 goto out;
2620         }
2621
2622         if (attr.ssid == NULL) {
2623                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2624                            "Select Message");
2625                 ret = -1;
2626                 goto out;
2627         }
2628
2629         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2630
2631         if (attr.mac_addr) {
2632                 bssid = attr.mac_addr;
2633                 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2634                            MAC2STR(bssid));
2635         }
2636
2637         if (attr.rf_bands)
2638                 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2639
2640         if (attr.ap_channel) {
2641                 u16 chan = WPA_GET_BE16(attr.ap_channel);
2642
2643                 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2644
2645                 if (chan >= 1 && chan <= 13 &&
2646                     (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2647                         freq = 2407 + 5 * chan;
2648                 else if (chan == 14 &&
2649                          (attr.rf_bands == NULL ||
2650                           *attr.rf_bands & WPS_RF_24GHZ))
2651                         freq = 2484;
2652                 else if (chan >= 30 &&
2653                          (attr.rf_bands == NULL ||
2654                           *attr.rf_bands & WPS_RF_50GHZ))
2655                         freq = 5000 + 5 * chan;
2656                 else if (chan >= 1 && chan <= 4 &&
2657                          (attr.rf_bands == NULL ||
2658                           *attr.rf_bands & WPS_RF_60GHZ))
2659                         freq = 56160 + 2160 * chan;
2660
2661                 if (freq) {
2662                         wpa_printf(MSG_DEBUG,
2663                                    "WPS: AP indicated channel %u -> %u MHz",
2664                                    chan, freq);
2665                 }
2666         }
2667
2668         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2669                     attr.oob_dev_password, attr.oob_dev_password_len);
2670         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2671                                  WPS_OOB_PUBKEY_HASH_LEN);
2672         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2673                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2674                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2675                 ret = -1;
2676                 goto out;
2677         }
2678         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2679                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2680
2681         ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2682                                  attr.oob_dev_password,
2683                                  attr.ssid, attr.ssid_len, freq);
2684
2685 out:
2686         wpabuf_free(wps);
2687         return ret;
2688 }
2689
2690
2691 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2692                                  const struct wpabuf *req,
2693                                  const struct wpabuf *sel)
2694 {
2695         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2696         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2697         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2698         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2699 }
2700
2701
2702 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2703                                     const struct wpabuf *req,
2704                                     const struct wpabuf *sel)
2705 {
2706         struct wpabuf *wps;
2707         int ret = -1;
2708         u16 wsc_len;
2709         const u8 *pos;
2710         struct wpabuf msg;
2711         struct wps_parse_attr attr;
2712         u16 dev_pw_id;
2713
2714         /*
2715          * Enrollee/station is always initiator of the NFC connection handover,
2716          * so use the request message here to find Enrollee public key hash.
2717          */
2718         wps = ndef_parse_wifi(req);
2719         if (wps == NULL)
2720                 return -1;
2721         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2722                    "payload from NFC connection handover");
2723         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2724         if (wpabuf_len(wps) < 2) {
2725                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2726                            "Message");
2727                 goto out;
2728         }
2729         pos = wpabuf_head(wps);
2730         wsc_len = WPA_GET_BE16(pos);
2731         if (wsc_len > wpabuf_len(wps) - 2) {
2732                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2733                            "in rt Wi-Fi Handover Request Message", wsc_len);
2734                 goto out;
2735         }
2736         pos += 2;
2737
2738         wpa_hexdump(MSG_DEBUG,
2739                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2740                     pos, wsc_len);
2741         if (wsc_len < wpabuf_len(wps) - 2) {
2742                 wpa_hexdump(MSG_DEBUG,
2743                             "WPS: Ignore extra data after WSC attributes",
2744                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2745         }
2746
2747         wpabuf_set(&msg, pos, wsc_len);
2748         ret = wps_parse_msg(&msg, &attr);
2749         if (ret < 0) {
2750                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2751                            "Wi-Fi Handover Request Message");
2752                 goto out;
2753         }
2754
2755         if (attr.oob_dev_password == NULL ||
2756             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2757                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2758                            "included in Wi-Fi Handover Request Message");
2759                 ret = -1;
2760                 goto out;
2761         }
2762
2763         if (attr.uuid_e == NULL) {
2764                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2765                            "Handover Request Message");
2766                 ret = -1;
2767                 goto out;
2768         }
2769
2770         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2771
2772         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2773                     attr.oob_dev_password, attr.oob_dev_password_len);
2774         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2775                                  WPS_OOB_PUBKEY_HASH_LEN);
2776         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2777                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2778                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2779                 ret = -1;
2780                 goto out;
2781         }
2782         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2783                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2784
2785         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2786                                              attr.oob_dev_password,
2787                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2788                                              NULL, 0, 1);
2789
2790 out:
2791         wpabuf_free(wps);
2792         return ret;
2793 }
2794
2795 #endif /* CONFIG_WPS_NFC */
2796
2797
2798 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2799 {
2800         size_t i;
2801         struct os_reltime now;
2802
2803         if (wpa_debug_level > MSG_DEBUG)
2804                 return;
2805
2806         if (wpa_s->wps_ap == NULL)
2807                 return;
2808
2809         os_get_reltime(&now);
2810
2811         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2812                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2813                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2814
2815                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2816                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2817                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2818                            ap->last_attempt.sec > 0 ?
2819                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2820                            e ? e->count : 0);
2821         }
2822 }
2823
2824
2825 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2826                                                  const u8 *bssid)
2827 {
2828         size_t i;
2829
2830         if (wpa_s->wps_ap == NULL)
2831                 return NULL;
2832
2833         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2834                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2835                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2836                         return ap;
2837         }
2838
2839         return NULL;
2840 }
2841
2842
2843 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2844                                         struct wpa_scan_res *res)
2845 {
2846         struct wpabuf *wps;
2847         enum wps_ap_info_type type;
2848         struct wps_ap_info *ap;
2849         int r, pbc_active;
2850         const u8 *uuid;
2851
2852         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2853                 return;
2854
2855         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2856         if (wps == NULL)
2857                 return;
2858
2859         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2860         if (r == 2)
2861                 type = WPS_AP_SEL_REG_OUR;
2862         else if (r == 1)
2863                 type = WPS_AP_SEL_REG;
2864         else
2865                 type = WPS_AP_NOT_SEL_REG;
2866
2867         uuid = wps_get_uuid_e(wps);
2868         pbc_active = wps_is_selected_pbc_registrar(wps);
2869
2870         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2871         if (ap) {
2872                 if (ap->type != type) {
2873                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2874                                    " changed type %d -> %d",
2875                                    MAC2STR(res->bssid), ap->type, type);
2876                         ap->type = type;
2877                         if (type != WPS_AP_NOT_SEL_REG)
2878                                 wpa_blacklist_del(wpa_s, ap->bssid);
2879                 }
2880                 ap->pbc_active = pbc_active;
2881                 if (uuid)
2882                         os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2883                 goto out;
2884         }
2885
2886         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2887                               sizeof(struct wps_ap_info));
2888         if (ap == NULL)
2889                 goto out;
2890
2891         wpa_s->wps_ap = ap;
2892         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2893         wpa_s->num_wps_ap++;
2894
2895         os_memset(ap, 0, sizeof(*ap));
2896         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2897         ap->type = type;
2898         ap->pbc_active = pbc_active;
2899         if (uuid)
2900                 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2901         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2902                    MAC2STR(ap->bssid), ap->type);
2903
2904 out:
2905         wpabuf_free(wps);
2906 }
2907
2908
2909 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2910                              struct wpa_scan_results *scan_res)
2911 {
2912         size_t i;
2913
2914         for (i = 0; i < scan_res->num; i++)
2915                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2916
2917         wpas_wps_dump_ap_info(wpa_s);
2918 }
2919
2920
2921 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2922 {
2923         struct wps_ap_info *ap;
2924
2925         wpa_s->after_wps = 0;
2926
2927         if (!wpa_s->wps_ap_iter)
2928                 return;
2929         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2930         if (ap == NULL)
2931                 return;
2932         ap->tries++;
2933         os_get_reltime(&ap->last_attempt);
2934 }