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 #ifdef CONFIG_P2P
1146         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1147                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1148                 if (ssid->ssid) {
1149                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1150                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1151                                   ssid->ssid_len);
1152                         if (wpa_s->go_params->freq > 56160) {
1153                                 /* P2P in 60 GHz uses PBSS */
1154                                 ssid->pbss = 1;
1155                         }
1156                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1157                                           "SSID", ssid->ssid, ssid->ssid_len);
1158                 }
1159         }
1160 #endif /* CONFIG_P2P */
1161         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1162                 return -1;
1163         if (wpa_s->wps_fragment_size)
1164                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1165         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1166                                wpa_s, NULL);
1167         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1168         return 0;
1169 }
1170
1171
1172 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1173                                  const u8 *dev_addr, const u8 *bssid,
1174                                  const char *pin, int p2p_group, u16 dev_pw_id,
1175                                  const u8 *peer_pubkey_hash,
1176                                  const u8 *ssid_val, size_t ssid_len, int freq)
1177 {
1178         struct wpa_ssid *ssid;
1179         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1180         unsigned int rpin = 0;
1181         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1182
1183 #ifdef CONFIG_AP
1184         if (wpa_s->ap_iface) {
1185                 wpa_printf(MSG_DEBUG,
1186                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1187                 return -1;
1188         }
1189 #endif /* CONFIG_AP */
1190         wpas_clear_wps(wpa_s);
1191         if (bssid && is_zero_ether_addr(bssid))
1192                 bssid = NULL;
1193         ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1194         if (ssid == NULL) {
1195                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1196                 return -1;
1197         }
1198         ssid->temporary = 1;
1199         ssid->p2p_group = p2p_group;
1200         if (ssid_val) {
1201                 ssid->ssid = os_malloc(ssid_len);
1202                 if (ssid->ssid) {
1203                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1204                         ssid->ssid_len = ssid_len;
1205                 }
1206         }
1207         if (peer_pubkey_hash) {
1208                 os_memcpy(hash, " pkhash=", 8);
1209                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1210                                            peer_pubkey_hash,
1211                                            WPS_OOB_PUBKEY_HASH_LEN);
1212         } else {
1213                 hash[0] = '\0';
1214         }
1215 #ifdef CONFIG_P2P
1216         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1217                 os_free(ssid->ssid);
1218                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1219                 if (ssid->ssid) {
1220                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1221                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1222                                   ssid->ssid_len);
1223                         if (wpa_s->go_params->freq > 56160) {
1224                                 /* P2P in 60 GHz uses PBSS */
1225                                 ssid->pbss = 1;
1226                         }
1227                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1228                                           "SSID", ssid->ssid, ssid->ssid_len);
1229                 }
1230         }
1231 #endif /* CONFIG_P2P */
1232         if (pin)
1233                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1234                             pin, dev_pw_id, hash);
1235         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1236                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1237                             dev_pw_id, hash);
1238         } else {
1239                 if (wps_generate_pin(&rpin) < 0) {
1240                         wpa_printf(MSG_DEBUG, "WPS: Could not generate PIN");
1241                         return -1;
1242                 }
1243                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1244                             rpin, dev_pw_id, hash);
1245         }
1246         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1247                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1248                 return -1;
1249         }
1250         if (wpa_s->wps_fragment_size)
1251                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1252         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1253                                wpa_s, NULL);
1254         wpa_s->wps_ap_iter = 1;
1255         wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1256         return rpin;
1257 }
1258
1259
1260 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1261                        const char *pin, int p2p_group, u16 dev_pw_id)
1262 {
1263         os_get_reltime(&wpa_s->wps_pin_start_time);
1264         return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1265                                      dev_pw_id, NULL, NULL, 0, 0);
1266 }
1267
1268
1269 void wpas_wps_pbc_overlap(struct wpa_supplicant *wpa_s)
1270 {
1271         union wps_event_data data;
1272
1273         os_memset(&data, 0, sizeof(data));
1274         data.fail.config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
1275         data.fail.error_indication = WPS_EI_NO_ERROR;
1276         /*
1277          * Call wpas_notify_wps_event_fail() directly instead of through
1278          * wpa_supplicant_wps_event() which would end up registering unnecessary
1279          * timeouts (those are only for the case where the failure happens
1280          * during an EAP-WSC exchange).
1281          */
1282         wpas_notify_wps_event_fail(wpa_s, &data.fail);
1283 }
1284
1285 /* Cancel the wps pbc/pin requests */
1286 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1287 {
1288 #ifdef CONFIG_AP
1289         if (wpa_s->ap_iface) {
1290                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1291                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1292         }
1293 #endif /* CONFIG_AP */
1294
1295         if (wpa_s->wpa_state == WPA_SCANNING ||
1296             wpa_s->wpa_state == WPA_DISCONNECTED) {
1297                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1298                 wpa_supplicant_cancel_scan(wpa_s);
1299                 wpas_clear_wps(wpa_s);
1300         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1301                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1302                            "deauthenticate");
1303                 wpa_s->own_disconnect_req = 1;
1304                 wpa_supplicant_deauthenticate(wpa_s,
1305                                               WLAN_REASON_DEAUTH_LEAVING);
1306                 wpas_clear_wps(wpa_s);
1307         } else {
1308                 wpas_wps_reenable_networks(wpa_s);
1309                 wpas_wps_clear_ap_info(wpa_s);
1310                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1311                     0)
1312                         wpas_clear_wps(wpa_s);
1313         }
1314
1315         wpa_s->after_wps = 0;
1316
1317         return 0;
1318 }
1319
1320
1321 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1322                        const char *pin, struct wps_new_ap_settings *settings)
1323 {
1324         struct wpa_ssid *ssid;
1325         char val[200];
1326         char *pos, *end;
1327         int res;
1328
1329 #ifdef CONFIG_AP
1330         if (wpa_s->ap_iface) {
1331                 wpa_printf(MSG_DEBUG,
1332                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1333                 return -1;
1334         }
1335 #endif /* CONFIG_AP */
1336         if (!pin)
1337                 return -1;
1338         wpas_clear_wps(wpa_s);
1339         ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1340         if (ssid == NULL)
1341                 return -1;
1342         ssid->temporary = 1;
1343         pos = val;
1344         end = pos + sizeof(val);
1345         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1346         if (os_snprintf_error(end - pos, res))
1347                 return -1;
1348         pos += res;
1349         if (settings) {
1350                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1351                                   "new_encr=%s new_key=%s",
1352                                   settings->ssid_hex, settings->auth,
1353                                   settings->encr, settings->key_hex);
1354                 if (os_snprintf_error(end - pos, res))
1355                         return -1;
1356                 pos += res;
1357         }
1358         res = os_snprintf(pos, end - pos, "\"");
1359         if (os_snprintf_error(end - pos, res))
1360                 return -1;
1361         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1362                 return -1;
1363         if (wpa_s->wps_fragment_size)
1364                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1365         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1366                                wpa_s, NULL);
1367         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1368         return 0;
1369 }
1370
1371
1372 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1373                                const u8 *p2p_dev_addr, const u8 *psk,
1374                                size_t psk_len)
1375 {
1376         if (is_zero_ether_addr(p2p_dev_addr)) {
1377                 wpa_printf(MSG_DEBUG,
1378                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1379                            MAC2STR(mac_addr));
1380         } else {
1381                 wpa_printf(MSG_DEBUG,
1382                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1383                            " P2P Device Addr " MACSTR,
1384                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1385         }
1386         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1387
1388         /* TODO */
1389
1390         return 0;
1391 }
1392
1393
1394 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1395                                    const struct wps_device_data *dev)
1396 {
1397         char uuid[40], txt[400];
1398         int len;
1399         char devtype[WPS_DEV_TYPE_BUFSIZE];
1400         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1401                 return;
1402         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1403         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1404                           " [%s|%s|%s|%s|%s|%s]",
1405                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1406                           dev->manufacturer, dev->model_name,
1407                           dev->model_number, dev->serial_number,
1408                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1409                                                sizeof(devtype)));
1410         if (!os_snprintf_error(sizeof(txt), len))
1411                 wpa_printf(MSG_INFO, "%s", txt);
1412 }
1413
1414
1415 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1416                                     u16 sel_reg_config_methods)
1417 {
1418 #ifdef CONFIG_WPS_ER
1419         struct wpa_supplicant *wpa_s = ctx;
1420
1421         if (wpa_s->wps_er == NULL)
1422                 return;
1423         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1424                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1425                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1426         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1427                            sel_reg_config_methods);
1428 #endif /* CONFIG_WPS_ER */
1429 }
1430
1431
1432 static u16 wps_fix_config_methods(u16 config_methods)
1433 {
1434         if ((config_methods &
1435              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1436               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1437                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1438                            "virtual_display for WPS 2.0 compliance");
1439                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1440         }
1441         if ((config_methods &
1442              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1443               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1444                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1445                            "virtual_push_button for WPS 2.0 compliance");
1446                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1447         }
1448
1449         return config_methods;
1450 }
1451
1452
1453 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1454                               struct wps_context *wps)
1455 {
1456         char buf[50];
1457         const char *src;
1458
1459         if (is_nil_uuid(wpa_s->conf->uuid)) {
1460                 struct wpa_supplicant *first;
1461                 first = wpa_s->global->ifaces;
1462                 while (first && first->next)
1463                         first = first->next;
1464                 if (first && first != wpa_s) {
1465                         if (wps != wpa_s->global->ifaces->wps)
1466                                 os_memcpy(wps->uuid,
1467                                           wpa_s->global->ifaces->wps->uuid,
1468                                           WPS_UUID_LEN);
1469                         src = "from the first interface";
1470                 } else {
1471                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1472                         src = "based on MAC address";
1473                 }
1474         } else {
1475                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1476                 src = "based on configuration";
1477         }
1478
1479         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1480         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1481 }
1482
1483
1484 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1485                                        struct wps_context *wps)
1486 {
1487         wpabuf_free(wps->dev.vendor_ext_m1);
1488         wps->dev.vendor_ext_m1 = NULL;
1489
1490         if (wpa_s->conf->wps_vendor_ext_m1) {
1491                 wps->dev.vendor_ext_m1 =
1492                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1493                 if (!wps->dev.vendor_ext_m1) {
1494                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1495                                    "allocate memory for vendor_ext_m1");
1496                 }
1497         }
1498 }
1499
1500
1501 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1502 {
1503         struct wps_context *wps;
1504         struct wps_registrar_config rcfg;
1505         struct hostapd_hw_modes *modes;
1506         u16 m;
1507
1508         wps = os_zalloc(sizeof(*wps));
1509         if (wps == NULL)
1510                 return -1;
1511
1512         wps->cred_cb = wpa_supplicant_wps_cred;
1513         wps->event_cb = wpa_supplicant_wps_event;
1514         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1515         wps->cb_ctx = wpa_s;
1516
1517         wps->dev.device_name = wpa_s->conf->device_name;
1518         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1519         wps->dev.model_name = wpa_s->conf->model_name;
1520         wps->dev.model_number = wpa_s->conf->model_number;
1521         wps->dev.serial_number = wpa_s->conf->serial_number;
1522         wps->config_methods =
1523                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1524         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1525             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1526                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1527                            "methods are not allowed at the same time");
1528                 os_free(wps);
1529                 return -1;
1530         }
1531         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1532         wps->dev.config_methods = wps->config_methods;
1533         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1534                   WPS_DEV_TYPE_LEN);
1535
1536         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1537         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1538                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1539
1540         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1541
1542         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1543         modes = wpa_s->hw.modes;
1544         if (modes) {
1545                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1546                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1547                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1548                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1549                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1550                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1551                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1552                                 wps->dev.rf_bands |= WPS_RF_60GHZ;
1553                 }
1554         }
1555         if (wps->dev.rf_bands == 0) {
1556                 /*
1557                  * Default to claiming support for both bands if the driver
1558                  * does not provide support for fetching supported bands.
1559                  */
1560                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1561         }
1562         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1563         wpas_wps_set_uuid(wpa_s, wps);
1564
1565         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1566         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1567
1568         os_memset(&rcfg, 0, sizeof(rcfg));
1569         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1570         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1571         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1572         rcfg.cb_ctx = wpa_s;
1573
1574         wps->registrar = wps_registrar_init(wps, &rcfg);
1575         if (wps->registrar == NULL) {
1576                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1577                 os_free(wps);
1578                 return -1;
1579         }
1580
1581         wpa_s->wps = wps;
1582
1583         return 0;
1584 }
1585
1586
1587 #ifdef CONFIG_WPS_ER
1588 static void wpas_wps_nfc_clear(struct wps_context *wps)
1589 {
1590         wps->ap_nfc_dev_pw_id = 0;
1591         wpabuf_free(wps->ap_nfc_dh_pubkey);
1592         wps->ap_nfc_dh_pubkey = NULL;
1593         wpabuf_free(wps->ap_nfc_dh_privkey);
1594         wps->ap_nfc_dh_privkey = NULL;
1595         wpabuf_free(wps->ap_nfc_dev_pw);
1596         wps->ap_nfc_dev_pw = NULL;
1597 }
1598 #endif /* CONFIG_WPS_ER */
1599
1600
1601 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1602 {
1603         wpas_wps_assoc_with_cred_cancel(wpa_s);
1604         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1605         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1606         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1607         wpas_wps_clear_ap_info(wpa_s);
1608
1609 #ifdef CONFIG_P2P
1610         eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1611 #endif /* CONFIG_P2P */
1612
1613         if (wpa_s->wps == NULL)
1614                 return;
1615
1616 #ifdef CONFIG_WPS_ER
1617         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1618         wpa_s->wps_er = NULL;
1619         wpas_wps_nfc_clear(wpa_s->wps);
1620 #endif /* CONFIG_WPS_ER */
1621
1622         wps_registrar_deinit(wpa_s->wps->registrar);
1623         wpabuf_free(wpa_s->wps->dh_pubkey);
1624         wpabuf_free(wpa_s->wps->dh_privkey);
1625         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1626         os_free(wpa_s->wps->network_key);
1627         os_free(wpa_s->wps);
1628         wpa_s->wps = NULL;
1629 }
1630
1631
1632 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1633                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1634 {
1635         struct wpabuf *wps_ie;
1636
1637         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1638                 return -1;
1639
1640         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1641         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1642                 if (!wps_ie) {
1643                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1644                         return 0;
1645                 }
1646
1647                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1648                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1649                                    "without active PBC Registrar");
1650                         wpabuf_free(wps_ie);
1651                         return 0;
1652                 }
1653
1654                 /* TODO: overlap detection */
1655                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1656                            "(Active PBC)");
1657                 wpabuf_free(wps_ie);
1658                 return 1;
1659         }
1660
1661         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1662                 if (!wps_ie) {
1663                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1664                         return 0;
1665                 }
1666
1667                 /*
1668                  * Start with WPS APs that advertise our address as an
1669                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1670                  * allow any WPS AP after couple of scans since some APs do not
1671                  * set Selected Registrar attribute properly when using
1672                  * external Registrar.
1673                  */
1674                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1675                         struct os_reltime age;
1676
1677                         os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1678
1679                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1680                             age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1681                                 wpa_printf(MSG_DEBUG,
1682                                            "   skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1683                                            wpa_s->scan_runs, (int) age.sec);
1684                                 wpabuf_free(wps_ie);
1685                                 return 0;
1686                         }
1687                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1688                 } else {
1689                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1690                                    "(Authorized MAC or Active PIN)");
1691                 }
1692                 wpabuf_free(wps_ie);
1693                 return 1;
1694         }
1695
1696         if (wps_ie) {
1697                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1698                 wpabuf_free(wps_ie);
1699                 return 1;
1700         }
1701
1702         return -1;
1703 }
1704
1705
1706 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1707                               struct wpa_ssid *ssid,
1708                               struct wpa_bss *bss)
1709 {
1710         struct wpabuf *wps_ie = NULL;
1711         int ret = 0;
1712
1713         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1714                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1715                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1716                         /* allow wildcard SSID for WPS PBC */
1717                         ret = 1;
1718                 }
1719         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1720                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1721                 if (wps_ie &&
1722                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1723                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1724                         /* allow wildcard SSID for WPS PIN */
1725                         ret = 1;
1726                 }
1727         }
1728
1729         if (!ret && ssid->bssid_set &&
1730             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1731                 /* allow wildcard SSID due to hardcoded BSSID match */
1732                 ret = 1;
1733         }
1734
1735 #ifdef CONFIG_WPS_STRICT
1736         if (wps_ie) {
1737                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1738                                                    0, bss->bssid) < 0)
1739                         ret = 0;
1740                 if (bss->beacon_ie_len) {
1741                         struct wpabuf *bcn_wps;
1742                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1743                                 bss, WPS_IE_VENDOR_TYPE);
1744                         if (bcn_wps == NULL) {
1745                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1746                                            "missing from AP Beacon");
1747                                 ret = 0;
1748                         } else {
1749                                 if (wps_validate_beacon(wps_ie) < 0)
1750                                         ret = 0;
1751                                 wpabuf_free(bcn_wps);
1752                         }
1753                 }
1754         }
1755 #endif /* CONFIG_WPS_STRICT */
1756
1757         wpabuf_free(wps_ie);
1758
1759         return ret;
1760 }
1761
1762
1763 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1764                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1765 {
1766         const u8 *sel_uuid;
1767         struct wpabuf *wps_ie;
1768         int ret = 0;
1769         size_t i;
1770
1771         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1772                 return 0;
1773
1774         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1775                    "present in scan results; selected BSSID " MACSTR,
1776                    MAC2STR(selected->bssid));
1777
1778         /* Make sure that only one AP is in active PBC mode */
1779         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1780         if (wps_ie) {
1781                 sel_uuid = wps_get_uuid_e(wps_ie);
1782                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1783                             sel_uuid, UUID_LEN);
1784         } else {
1785                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1786                            "WPS IE?!");
1787                 sel_uuid = NULL;
1788         }
1789
1790         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1791                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1792
1793                 if (!ap->pbc_active ||
1794                     os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1795                         continue;
1796
1797                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1798                            MACSTR, MAC2STR(ap->bssid));
1799                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1800                             ap->uuid, UUID_LEN);
1801                 if (sel_uuid == NULL ||
1802                     os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1803                         ret = 1; /* PBC overlap */
1804                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1805                                 MACSTR " and " MACSTR,
1806                                 MAC2STR(selected->bssid),
1807                                 MAC2STR(ap->bssid));
1808                         break;
1809                 }
1810
1811                 /* TODO: verify that this is reasonable dual-band situation */
1812         }
1813
1814         wpabuf_free(wps_ie);
1815
1816         return ret;
1817 }
1818
1819
1820 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1821 {
1822         struct wpa_bss *bss;
1823         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1824
1825         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1826                 return;
1827
1828         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1829                 struct wpabuf *ie;
1830                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1831                 if (!ie)
1832                         continue;
1833                 if (wps_is_selected_pbc_registrar(ie))
1834                         pbc++;
1835                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1836                         auth++;
1837                 else if (wps_is_selected_pin_registrar(ie))
1838                         pin++;
1839                 else
1840                         wps++;
1841                 wpabuf_free(ie);
1842         }
1843
1844         if (pbc)
1845                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1846         else if (auth)
1847                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1848         else if (pin)
1849                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1850         else if (wps)
1851                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1852 }
1853
1854
1855 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1856 {
1857         struct wpa_ssid *ssid;
1858
1859         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1860                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1861                         return 1;
1862         }
1863
1864         return 0;
1865 }
1866
1867
1868 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1869                               char *end)
1870 {
1871         struct wpabuf *wps_ie;
1872         int ret;
1873
1874         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1875         if (wps_ie == NULL)
1876                 return 0;
1877
1878         ret = wps_attr_text(wps_ie, buf, end);
1879         wpabuf_free(wps_ie);
1880         return ret;
1881 }
1882
1883
1884 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1885 {
1886 #ifdef CONFIG_WPS_ER
1887         if (wpa_s->wps_er) {
1888                 wps_er_refresh(wpa_s->wps_er);
1889                 return 0;
1890         }
1891         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1892         if (wpa_s->wps_er == NULL)
1893                 return -1;
1894         return 0;
1895 #else /* CONFIG_WPS_ER */
1896         return 0;
1897 #endif /* CONFIG_WPS_ER */
1898 }
1899
1900
1901 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1902 {
1903 #ifdef CONFIG_WPS_ER
1904         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1905         wpa_s->wps_er = NULL;
1906 #endif /* CONFIG_WPS_ER */
1907 }
1908
1909
1910 #ifdef CONFIG_WPS_ER
1911 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1912                         const char *uuid, const char *pin)
1913 {
1914         u8 u[UUID_LEN];
1915         const u8 *use_uuid = NULL;
1916         u8 addr_buf[ETH_ALEN];
1917
1918         if (os_strcmp(uuid, "any") == 0) {
1919         } else if (uuid_str2bin(uuid, u) == 0) {
1920                 use_uuid = u;
1921         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1922                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1923                 if (use_uuid == NULL)
1924                         return -1;
1925         } else
1926                 return -1;
1927         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1928                                      use_uuid,
1929                                      (const u8 *) pin, os_strlen(pin), 300);
1930 }
1931
1932
1933 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1934 {
1935         u8 u[UUID_LEN], *use_uuid = NULL;
1936         u8 addr[ETH_ALEN], *use_addr = NULL;
1937
1938         if (uuid_str2bin(uuid, u) == 0)
1939                 use_uuid = u;
1940         else if (hwaddr_aton(uuid, addr) == 0)
1941                 use_addr = addr;
1942         else
1943                 return -1;
1944         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1945 }
1946
1947
1948 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1949                       const char *pin)
1950 {
1951         u8 u[UUID_LEN], *use_uuid = NULL;
1952         u8 addr[ETH_ALEN], *use_addr = NULL;
1953
1954         if (uuid_str2bin(uuid, u) == 0)
1955                 use_uuid = u;
1956         else if (hwaddr_aton(uuid, addr) == 0)
1957                 use_addr = addr;
1958         else
1959                 return -1;
1960
1961         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1962                             os_strlen(pin));
1963 }
1964
1965
1966 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1967                                     struct wps_credential *cred)
1968 {
1969         os_memset(cred, 0, sizeof(*cred));
1970         if (ssid->ssid_len > SSID_MAX_LEN)
1971                 return -1;
1972         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1973         cred->ssid_len = ssid->ssid_len;
1974         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1975                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1976                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1977                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1978                         cred->encr_type = WPS_ENCR_AES;
1979                 else
1980                         cred->encr_type = WPS_ENCR_TKIP;
1981                 if (ssid->passphrase) {
1982                         cred->key_len = os_strlen(ssid->passphrase);
1983                         if (cred->key_len >= 64)
1984                                 return -1;
1985                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1986                 } else if (ssid->psk_set) {
1987                         cred->key_len = 32;
1988                         os_memcpy(cred->key, ssid->psk, 32);
1989                 } else
1990                         return -1;
1991         } else {
1992                 cred->auth_type = WPS_AUTH_OPEN;
1993                 cred->encr_type = WPS_ENCR_NONE;
1994         }
1995
1996         return 0;
1997 }
1998
1999
2000 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
2001                            int id)
2002 {
2003         u8 u[UUID_LEN], *use_uuid = NULL;
2004         u8 addr[ETH_ALEN], *use_addr = NULL;
2005         struct wpa_ssid *ssid;
2006         struct wps_credential cred;
2007         int ret;
2008
2009         if (uuid_str2bin(uuid, u) == 0)
2010                 use_uuid = u;
2011         else if (hwaddr_aton(uuid, addr) == 0)
2012                 use_addr = addr;
2013         else
2014                 return -1;
2015         ssid = wpa_config_get_network(wpa_s->conf, id);
2016         if (ssid == NULL || ssid->ssid == NULL)
2017                 return -1;
2018
2019         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2020                 return -1;
2021         ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
2022         os_memset(&cred, 0, sizeof(cred));
2023         return ret;
2024 }
2025
2026
2027 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
2028                        const char *pin, struct wps_new_ap_settings *settings)
2029 {
2030         u8 u[UUID_LEN], *use_uuid = NULL;
2031         u8 addr[ETH_ALEN], *use_addr = NULL;
2032         struct wps_credential cred;
2033         size_t len;
2034
2035         if (uuid_str2bin(uuid, u) == 0)
2036                 use_uuid = u;
2037         else if (hwaddr_aton(uuid, addr) == 0)
2038                 use_addr = addr;
2039         else
2040                 return -1;
2041         if (settings->ssid_hex == NULL || settings->auth == NULL ||
2042             settings->encr == NULL || settings->key_hex == NULL)
2043                 return -1;
2044
2045         os_memset(&cred, 0, sizeof(cred));
2046         len = os_strlen(settings->ssid_hex);
2047         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2048             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2049                 return -1;
2050         cred.ssid_len = len / 2;
2051
2052         len = os_strlen(settings->key_hex);
2053         if ((len & 1) || len > 2 * sizeof(cred.key) ||
2054             hexstr2bin(settings->key_hex, cred.key, len / 2))
2055                 return -1;
2056         cred.key_len = len / 2;
2057
2058         if (os_strcmp(settings->auth, "OPEN") == 0)
2059                 cred.auth_type = WPS_AUTH_OPEN;
2060         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2061                 cred.auth_type = WPS_AUTH_WPAPSK;
2062         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2063                 cred.auth_type = WPS_AUTH_WPA2PSK;
2064         else
2065                 return -1;
2066
2067         if (os_strcmp(settings->encr, "NONE") == 0)
2068                 cred.encr_type = WPS_ENCR_NONE;
2069 #ifdef CONFIG_TESTING_OPTIONS
2070         else if (os_strcmp(settings->encr, "WEP") == 0)
2071                 cred.encr_type = WPS_ENCR_WEP;
2072 #endif /* CONFIG_TESTING_OPTIONS */
2073         else if (os_strcmp(settings->encr, "TKIP") == 0)
2074                 cred.encr_type = WPS_ENCR_TKIP;
2075         else if (os_strcmp(settings->encr, "CCMP") == 0)
2076                 cred.encr_type = WPS_ENCR_AES;
2077         else
2078                 return -1;
2079
2080         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2081                              (const u8 *) pin, os_strlen(pin), &cred);
2082 }
2083
2084
2085 #ifdef CONFIG_WPS_NFC
2086 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2087                                              int ndef, const char *uuid)
2088 {
2089         struct wpabuf *ret;
2090         u8 u[UUID_LEN], *use_uuid = NULL;
2091         u8 addr[ETH_ALEN], *use_addr = NULL;
2092
2093         if (!wpa_s->wps_er)
2094                 return NULL;
2095
2096         if (uuid_str2bin(uuid, u) == 0)
2097                 use_uuid = u;
2098         else if (hwaddr_aton(uuid, addr) == 0)
2099                 use_addr = addr;
2100         else
2101                 return NULL;
2102
2103         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2104         if (ndef && ret) {
2105                 struct wpabuf *tmp;
2106                 tmp = ndef_build_wifi(ret);
2107                 wpabuf_free(ret);
2108                 if (tmp == NULL)
2109                         return NULL;
2110                 ret = tmp;
2111         }
2112
2113         return ret;
2114 }
2115 #endif /* CONFIG_WPS_NFC */
2116
2117
2118 static int callbacks_pending = 0;
2119
2120 static void wpas_wps_terminate_cb(void *ctx)
2121 {
2122         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2123         if (--callbacks_pending <= 0)
2124                 eloop_terminate();
2125 }
2126 #endif /* CONFIG_WPS_ER */
2127
2128
2129 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2130 {
2131 #ifdef CONFIG_WPS_ER
2132         if (wpa_s->wps_er) {
2133                 callbacks_pending++;
2134                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2135                 wpa_s->wps_er = NULL;
2136                 return 1;
2137         }
2138 #endif /* CONFIG_WPS_ER */
2139         return 0;
2140 }
2141
2142
2143 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2144 {
2145         struct wps_context *wps = wpa_s->wps;
2146
2147         if (wps == NULL)
2148                 return;
2149
2150         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2151                 wps->config_methods = wps_config_methods_str2bin(
2152                         wpa_s->conf->config_methods);
2153                 if ((wps->config_methods &
2154                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2155                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2156                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2157                                    "config methods are not allowed at the "
2158                                    "same time");
2159                         wps->config_methods &= ~WPS_CONFIG_LABEL;
2160                 }
2161         }
2162         wps->config_methods = wps_fix_config_methods(wps->config_methods);
2163         wps->dev.config_methods = wps->config_methods;
2164
2165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2166                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2167                           WPS_DEV_TYPE_LEN);
2168
2169         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2170                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2171                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2172                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2173         }
2174
2175         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2176                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2177
2178         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2179                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2180
2181         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2182                 wpas_wps_set_uuid(wpa_s, wps);
2183
2184         if (wpa_s->conf->changed_parameters &
2185             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2186                 /* Update pointers to make sure they refer current values */
2187                 wps->dev.device_name = wpa_s->conf->device_name;
2188                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2189                 wps->dev.model_name = wpa_s->conf->model_name;
2190                 wps->dev.model_number = wpa_s->conf->model_number;
2191                 wps->dev.serial_number = wpa_s->conf->serial_number;
2192         }
2193 }
2194
2195
2196 #ifdef CONFIG_WPS_NFC
2197
2198 #ifdef CONFIG_WPS_ER
2199 static struct wpabuf *
2200 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2201                               struct wpa_ssid *ssid)
2202 {
2203         struct wpabuf *ret;
2204         struct wps_credential cred;
2205
2206         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2207                 return NULL;
2208
2209         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2210
2211         if (ndef && ret) {
2212                 struct wpabuf *tmp;
2213                 tmp = ndef_build_wifi(ret);
2214                 wpabuf_free(ret);
2215                 if (tmp == NULL)
2216                         return NULL;
2217                 ret = tmp;
2218         }
2219
2220         return ret;
2221 }
2222 #endif /* CONFIG_WPS_ER */
2223
2224
2225 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2226                                           int ndef, const char *id_str)
2227 {
2228 #ifdef CONFIG_WPS_ER
2229         if (id_str) {
2230                 int id;
2231                 char *end = NULL;
2232                 struct wpa_ssid *ssid;
2233
2234                 id = strtol(id_str, &end, 10);
2235                 if (end && *end)
2236                         return NULL;
2237
2238                 ssid = wpa_config_get_network(wpa_s->conf, id);
2239                 if (ssid == NULL)
2240                         return NULL;
2241                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2242         }
2243 #endif /* CONFIG_WPS_ER */
2244 #ifdef CONFIG_AP
2245         if (wpa_s->ap_iface)
2246                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2247 #endif /* CONFIG_AP */
2248         return NULL;
2249 }
2250
2251
2252 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2253 {
2254         if (wpa_s->conf->wps_nfc_pw_from_config) {
2255                 return wps_nfc_token_build(ndef,
2256                                            wpa_s->conf->wps_nfc_dev_pw_id,
2257                                            wpa_s->conf->wps_nfc_dh_pubkey,
2258                                            wpa_s->conf->wps_nfc_dev_pw);
2259         }
2260
2261         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2262                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2263                                  &wpa_s->conf->wps_nfc_dh_privkey,
2264                                  &wpa_s->conf->wps_nfc_dev_pw);
2265 }
2266
2267
2268 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2269                        const u8 *bssid,
2270                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2271                        int p2p_group, const u8 *peer_pubkey_hash,
2272                        const u8 *ssid, size_t ssid_len, int freq)
2273 {
2274         struct wps_context *wps = wpa_s->wps;
2275         char pw[32 * 2 + 1];
2276
2277         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2278                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2279                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2280         }
2281
2282         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2283             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2284                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2285                            "cannot start NFC-triggered connection");
2286                 return -1;
2287         }
2288
2289         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2290                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2291                            "cannot start NFC-triggered connection", dev_pw_id);
2292                 return -1;
2293         }
2294
2295         dh5_free(wps->dh_ctx);
2296         wpabuf_free(wps->dh_pubkey);
2297         wpabuf_free(wps->dh_privkey);
2298         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2299         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2300         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2301                 wps->dh_ctx = NULL;
2302                 wpabuf_free(wps->dh_pubkey);
2303                 wps->dh_pubkey = NULL;
2304                 wpabuf_free(wps->dh_privkey);
2305                 wps->dh_privkey = NULL;
2306                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2307                 return -1;
2308         }
2309         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2310         if (wps->dh_ctx == NULL) {
2311                 wpabuf_free(wps->dh_pubkey);
2312                 wps->dh_pubkey = NULL;
2313                 wpabuf_free(wps->dh_privkey);
2314                 wps->dh_privkey = NULL;
2315                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2316                 return -1;
2317         }
2318
2319         if (dev_pw) {
2320                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2321                                            wpabuf_head(dev_pw),
2322                                            wpabuf_len(dev_pw));
2323         }
2324         return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2325                                      dev_pw ? pw : NULL,
2326                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2327                                      ssid, ssid_len, freq);
2328 }
2329
2330
2331 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2332                              struct wps_parse_attr *attr)
2333 {
2334         /*
2335          * Disable existing networks temporarily to allow the newly learned
2336          * credential to be preferred. Enable the temporarily disabled networks
2337          * after 10 seconds.
2338          */
2339         wpas_wps_temp_disable(wpa_s, NULL);
2340         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2341                                NULL);
2342
2343         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2344                 return -1;
2345
2346         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2347                 return 0;
2348
2349         if (attr->ap_channel) {
2350                 u16 chan = WPA_GET_BE16(attr->ap_channel);
2351                 int freq = 0;
2352
2353                 if (chan >= 1 && chan <= 13)
2354                         freq = 2407 + 5 * chan;
2355                 else if (chan == 14)
2356                         freq = 2484;
2357                 else if (chan >= 30)
2358                         freq = 5000 + 5 * chan;
2359
2360                 if (freq) {
2361                         wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2362                                    chan, freq);
2363                         wpa_s->after_wps = 5;
2364                         wpa_s->wps_freq = freq;
2365                 }
2366         }
2367
2368         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2369                    "based on the received credential added");
2370         wpa_s->normal_scans = 0;
2371         wpa_supplicant_reinit_autoscan(wpa_s);
2372         wpa_s->disconnected = 0;
2373         wpa_s->reassociate = 1;
2374
2375         wpa_supplicant_cancel_sched_scan(wpa_s);
2376         wpa_supplicant_req_scan(wpa_s, 0, 0);
2377
2378         return 0;
2379 }
2380
2381
2382 #ifdef CONFIG_WPS_ER
2383 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2384                                            struct wps_parse_attr *attr)
2385 {
2386         return wps_registrar_add_nfc_password_token(
2387                 wpa_s->wps->registrar, attr->oob_dev_password,
2388                 attr->oob_dev_password_len);
2389 }
2390 #endif /* CONFIG_WPS_ER */
2391
2392
2393 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2394                                     const struct wpabuf *wps)
2395 {
2396         struct wps_parse_attr attr;
2397
2398         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2399
2400         if (wps_parse_msg(wps, &attr)) {
2401                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2402                 return -1;
2403         }
2404
2405         if (attr.num_cred)
2406                 return wpas_wps_use_cred(wpa_s, &attr);
2407
2408 #ifdef CONFIG_WPS_ER
2409         if (attr.oob_dev_password)
2410                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2411 #endif /* CONFIG_WPS_ER */
2412
2413         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2414         return -1;
2415 }
2416
2417
2418 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2419                           const struct wpabuf *data, int forced_freq)
2420 {
2421         const struct wpabuf *wps = data;
2422         struct wpabuf *tmp = NULL;
2423         int ret;
2424
2425         if (wpabuf_len(data) < 4)
2426                 return -1;
2427
2428         if (*wpabuf_head_u8(data) != 0x10) {
2429                 /* Assume this contains full NDEF record */
2430                 tmp = ndef_parse_wifi(data);
2431                 if (tmp == NULL) {
2432 #ifdef CONFIG_P2P
2433                         tmp = ndef_parse_p2p(data);
2434                         if (tmp) {
2435                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2436                                                                forced_freq);
2437                                 wpabuf_free(tmp);
2438                                 return ret;
2439                         }
2440 #endif /* CONFIG_P2P */
2441                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2442                         return -1;
2443                 }
2444                 wps = tmp;
2445         }
2446
2447         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2448         wpabuf_free(tmp);
2449         return ret;
2450 }
2451
2452
2453 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2454                                           int ndef)
2455 {
2456         struct wpabuf *ret;
2457
2458         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2459             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2460                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2461                 return NULL;
2462
2463         ret = wps_build_nfc_handover_req(wpa_s->wps,
2464                                          wpa_s->conf->wps_nfc_dh_pubkey);
2465
2466         if (ndef && ret) {
2467                 struct wpabuf *tmp;
2468                 tmp = ndef_build_wifi(ret);
2469                 wpabuf_free(ret);
2470                 if (tmp == NULL)
2471                         return NULL;
2472                 ret = tmp;
2473         }
2474
2475         return ret;
2476 }
2477
2478
2479 #ifdef CONFIG_WPS_NFC
2480
2481 static struct wpabuf *
2482 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2483                              const char *uuid)
2484 {
2485 #ifdef CONFIG_WPS_ER
2486         struct wpabuf *ret;
2487         u8 u[UUID_LEN], *use_uuid = NULL;
2488         u8 addr[ETH_ALEN], *use_addr = NULL;
2489         struct wps_context *wps = wpa_s->wps;
2490
2491         if (wps == NULL)
2492                 return NULL;
2493
2494         if (uuid == NULL)
2495                 return NULL;
2496         if (uuid_str2bin(uuid, u) == 0)
2497                 use_uuid = u;
2498         else if (hwaddr_aton(uuid, addr) == 0)
2499                 use_addr = addr;
2500         else
2501                 return NULL;
2502
2503         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2504                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2505                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2506                         return NULL;
2507         }
2508
2509         wpas_wps_nfc_clear(wps);
2510         wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2511         wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2512         wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2513         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2514                 wpas_wps_nfc_clear(wps);
2515                 return NULL;
2516         }
2517
2518         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2519                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2520         if (ndef && ret) {
2521                 struct wpabuf *tmp;
2522                 tmp = ndef_build_wifi(ret);
2523                 wpabuf_free(ret);
2524                 if (tmp == NULL)
2525                         return NULL;
2526                 ret = tmp;
2527         }
2528
2529         return ret;
2530 #else /* CONFIG_WPS_ER */
2531         return NULL;
2532 #endif /* CONFIG_WPS_ER */
2533 }
2534 #endif /* CONFIG_WPS_NFC */
2535
2536
2537 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2538                                           int ndef, int cr, const char *uuid)
2539 {
2540         struct wpabuf *ret;
2541         if (!cr)
2542                 return NULL;
2543         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2544         if (ret)
2545                 return ret;
2546         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2547 }
2548
2549
2550 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2551                                         const struct wpabuf *data)
2552 {
2553         struct wpabuf *wps;
2554         int ret = -1;
2555         u16 wsc_len;
2556         const u8 *pos;
2557         struct wpabuf msg;
2558         struct wps_parse_attr attr;
2559         u16 dev_pw_id;
2560         const u8 *bssid = NULL;
2561         int freq = 0;
2562
2563         wps = ndef_parse_wifi(data);
2564         if (wps == NULL)
2565                 return -1;
2566         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2567                    "payload from NFC connection handover");
2568         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2569         if (wpabuf_len(wps) < 2) {
2570                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2571                            "Message");
2572                 goto out;
2573         }
2574         pos = wpabuf_head(wps);
2575         wsc_len = WPA_GET_BE16(pos);
2576         if (wsc_len > wpabuf_len(wps) - 2) {
2577                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2578                            "in Wi-Fi Handover Select Message", wsc_len);
2579                 goto out;
2580         }
2581         pos += 2;
2582
2583         wpa_hexdump(MSG_DEBUG,
2584                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2585                     pos, wsc_len);
2586         if (wsc_len < wpabuf_len(wps) - 2) {
2587                 wpa_hexdump(MSG_DEBUG,
2588                             "WPS: Ignore extra data after WSC attributes",
2589                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2590         }
2591
2592         wpabuf_set(&msg, pos, wsc_len);
2593         ret = wps_parse_msg(&msg, &attr);
2594         if (ret < 0) {
2595                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2596                            "Wi-Fi Handover Select Message");
2597                 goto out;
2598         }
2599
2600         if (attr.oob_dev_password == NULL ||
2601             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2602                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2603                            "included in Wi-Fi Handover Select Message");
2604                 ret = -1;
2605                 goto out;
2606         }
2607
2608         if (attr.ssid == NULL) {
2609                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2610                            "Select Message");
2611                 ret = -1;
2612                 goto out;
2613         }
2614
2615         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2616
2617         if (attr.mac_addr) {
2618                 bssid = attr.mac_addr;
2619                 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2620                            MAC2STR(bssid));
2621         }
2622
2623         if (attr.rf_bands)
2624                 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2625
2626         if (attr.ap_channel) {
2627                 u16 chan = WPA_GET_BE16(attr.ap_channel);
2628
2629                 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2630
2631                 if (chan >= 1 && chan <= 13 &&
2632                     (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2633                         freq = 2407 + 5 * chan;
2634                 else if (chan == 14 &&
2635                          (attr.rf_bands == NULL ||
2636                           *attr.rf_bands & WPS_RF_24GHZ))
2637                         freq = 2484;
2638                 else if (chan >= 30 &&
2639                          (attr.rf_bands == NULL ||
2640                           *attr.rf_bands & WPS_RF_50GHZ))
2641                         freq = 5000 + 5 * chan;
2642                 else if (chan >= 1 && chan <= 4 &&
2643                          (attr.rf_bands == NULL ||
2644                           *attr.rf_bands & WPS_RF_60GHZ))
2645                         freq = 56160 + 2160 * chan;
2646
2647                 if (freq) {
2648                         wpa_printf(MSG_DEBUG,
2649                                    "WPS: AP indicated channel %u -> %u MHz",
2650                                    chan, freq);
2651                 }
2652         }
2653
2654         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2655                     attr.oob_dev_password, attr.oob_dev_password_len);
2656         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2657                                  WPS_OOB_PUBKEY_HASH_LEN);
2658         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2659                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2660                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2661                 ret = -1;
2662                 goto out;
2663         }
2664         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2665                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2666
2667         ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2668                                  attr.oob_dev_password,
2669                                  attr.ssid, attr.ssid_len, freq);
2670
2671 out:
2672         wpabuf_free(wps);
2673         return ret;
2674 }
2675
2676
2677 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2678                                  const struct wpabuf *req,
2679                                  const struct wpabuf *sel)
2680 {
2681         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2682         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2683         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2684         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2685 }
2686
2687
2688 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2689                                     const struct wpabuf *req,
2690                                     const struct wpabuf *sel)
2691 {
2692         struct wpabuf *wps;
2693         int ret = -1;
2694         u16 wsc_len;
2695         const u8 *pos;
2696         struct wpabuf msg;
2697         struct wps_parse_attr attr;
2698         u16 dev_pw_id;
2699
2700         /*
2701          * Enrollee/station is always initiator of the NFC connection handover,
2702          * so use the request message here to find Enrollee public key hash.
2703          */
2704         wps = ndef_parse_wifi(req);
2705         if (wps == NULL)
2706                 return -1;
2707         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2708                    "payload from NFC connection handover");
2709         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2710         if (wpabuf_len(wps) < 2) {
2711                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2712                            "Message");
2713                 goto out;
2714         }
2715         pos = wpabuf_head(wps);
2716         wsc_len = WPA_GET_BE16(pos);
2717         if (wsc_len > wpabuf_len(wps) - 2) {
2718                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2719                            "in rt Wi-Fi Handover Request Message", wsc_len);
2720                 goto out;
2721         }
2722         pos += 2;
2723
2724         wpa_hexdump(MSG_DEBUG,
2725                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2726                     pos, wsc_len);
2727         if (wsc_len < wpabuf_len(wps) - 2) {
2728                 wpa_hexdump(MSG_DEBUG,
2729                             "WPS: Ignore extra data after WSC attributes",
2730                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2731         }
2732
2733         wpabuf_set(&msg, pos, wsc_len);
2734         ret = wps_parse_msg(&msg, &attr);
2735         if (ret < 0) {
2736                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2737                            "Wi-Fi Handover Request Message");
2738                 goto out;
2739         }
2740
2741         if (attr.oob_dev_password == NULL ||
2742             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2743                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2744                            "included in Wi-Fi Handover Request Message");
2745                 ret = -1;
2746                 goto out;
2747         }
2748
2749         if (attr.uuid_e == NULL) {
2750                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2751                            "Handover Request Message");
2752                 ret = -1;
2753                 goto out;
2754         }
2755
2756         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2757
2758         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2759                     attr.oob_dev_password, attr.oob_dev_password_len);
2760         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2761                                  WPS_OOB_PUBKEY_HASH_LEN);
2762         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2763                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2764                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2765                 ret = -1;
2766                 goto out;
2767         }
2768         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2769                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2770
2771         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2772                                              attr.oob_dev_password,
2773                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2774                                              NULL, 0, 1);
2775
2776 out:
2777         wpabuf_free(wps);
2778         return ret;
2779 }
2780
2781 #endif /* CONFIG_WPS_NFC */
2782
2783
2784 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2785 {
2786         size_t i;
2787         struct os_reltime now;
2788
2789         if (wpa_debug_level > MSG_DEBUG)
2790                 return;
2791
2792         if (wpa_s->wps_ap == NULL)
2793                 return;
2794
2795         os_get_reltime(&now);
2796
2797         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2798                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2799                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2800
2801                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2802                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2803                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2804                            ap->last_attempt.sec > 0 ?
2805                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2806                            e ? e->count : 0);
2807         }
2808 }
2809
2810
2811 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2812                                                  const u8 *bssid)
2813 {
2814         size_t i;
2815
2816         if (wpa_s->wps_ap == NULL)
2817                 return NULL;
2818
2819         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2820                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2821                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2822                         return ap;
2823         }
2824
2825         return NULL;
2826 }
2827
2828
2829 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2830                                         struct wpa_scan_res *res)
2831 {
2832         struct wpabuf *wps;
2833         enum wps_ap_info_type type;
2834         struct wps_ap_info *ap;
2835         int r, pbc_active;
2836         const u8 *uuid;
2837
2838         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2839                 return;
2840
2841         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2842         if (wps == NULL)
2843                 return;
2844
2845         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2846         if (r == 2)
2847                 type = WPS_AP_SEL_REG_OUR;
2848         else if (r == 1)
2849                 type = WPS_AP_SEL_REG;
2850         else
2851                 type = WPS_AP_NOT_SEL_REG;
2852
2853         uuid = wps_get_uuid_e(wps);
2854         pbc_active = wps_is_selected_pbc_registrar(wps);
2855
2856         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2857         if (ap) {
2858                 if (ap->type != type) {
2859                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2860                                    " changed type %d -> %d",
2861                                    MAC2STR(res->bssid), ap->type, type);
2862                         ap->type = type;
2863                         if (type != WPS_AP_NOT_SEL_REG)
2864                                 wpa_blacklist_del(wpa_s, ap->bssid);
2865                 }
2866                 ap->pbc_active = pbc_active;
2867                 if (uuid)
2868                         os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2869                 goto out;
2870         }
2871
2872         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2873                               sizeof(struct wps_ap_info));
2874         if (ap == NULL)
2875                 goto out;
2876
2877         wpa_s->wps_ap = ap;
2878         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2879         wpa_s->num_wps_ap++;
2880
2881         os_memset(ap, 0, sizeof(*ap));
2882         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2883         ap->type = type;
2884         ap->pbc_active = pbc_active;
2885         if (uuid)
2886                 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2887         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2888                    MAC2STR(ap->bssid), ap->type);
2889
2890 out:
2891         wpabuf_free(wps);
2892 }
2893
2894
2895 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2896                              struct wpa_scan_results *scan_res)
2897 {
2898         size_t i;
2899
2900         for (i = 0; i < scan_res->num; i++)
2901                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2902
2903         wpas_wps_dump_ap_info(wpa_s);
2904 }
2905
2906
2907 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2908 {
2909         struct wps_ap_info *ap;
2910
2911         wpa_s->after_wps = 0;
2912
2913         if (!wpa_s->wps_ap_iter)
2914                 return;
2915         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2916         if (ap == NULL)
2917                 return;
2918         ap->tries++;
2919         os_get_reltime(&ap->last_attempt);
2920 }