wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "uuid.h"
  14 #include "crypto/random.h"
  15 #include "crypto/dh_group5.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/ieee802_11_common.h"
  18 #include "common/wpa_common.h"
  19 #include "common/wpa_ctrl.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eap_peer/eap.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "rsn_supp/wpa.h"
  24 #include "wps/wps_attr_parse.h"
  25 #include "config.h"
  26 #include "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "notify.h"
  29 #include "blacklist.h"
  30 #include "bss.h"
  31 #include "scan.h"
  32 #include "ap.h"
  33 #include "p2p/p2p.h"
  34 #include "p2p_supplicant.h"
  35 #include "wps_supplicant.h"
  36
  37
  38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  41
  42 /*
  43  * The minimum time in seconds before trying to associate to a WPS PIN AP that
  44  * does not have Selected Registrar TRUE.
  45  */
  46 #ifndef WPS_PIN_TIME_IGNORE_SEL_REG
  47 #define WPS_PIN_TIME_IGNORE_SEL_REG 5
  48 #endif /* WPS_PIN_TIME_IGNORE_SEL_REG */
  49
  50 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  51 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  52
  53
  54 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  55 {
  56         os_free(wpa_s->wps_ap);
  57         wpa_s->wps_ap = NULL;
  58         wpa_s->num_wps_ap = 0;
  59         wpa_s->wps_ap_iter = 0;
  60 }
  61
  62
  63 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
  64 {
  65         struct wpa_supplicant *wpa_s = eloop_ctx;
  66         int use_fast_assoc = timeout_ctx != NULL;
  67
  68         wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
  69         if (!use_fast_assoc ||
  70             wpa_supplicant_fast_associate(wpa_s) != 1)
  71                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  72 }
  73
  74
  75 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
  76 {
  77         eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0);
  78         eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1);
  79 }
  80
  81
  82 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  83 {
  84         if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
  85                 return 1;
  86
  87         if (!wpa_s->wps_success &&
  88             wpa_s->current_ssid &&
  89             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  90                 const u8 *bssid = wpa_s->bssid;
  91                 if (is_zero_ether_addr(bssid))
  92                         bssid = wpa_s->pending_bssid;
  93
  94                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  95                            " did not succeed - continue trying to find "
  96                            "suitable AP", MAC2STR(bssid));
  97                 wpa_blacklist_add(wpa_s, bssid);
  98
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 wpa_s->reassociate = 1;
 102                 wpa_supplicant_req_scan(wpa_s,
 103                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
 104                 wpa_s->blacklist_cleared = 0;
 105                 return 1;
 106         }
 107
 108         wpas_wps_clear_ap_info(wpa_s);
 109         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 110         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
 111                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
 112
 113         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
 114             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 115                 int disabled = wpa_s->current_ssid->disabled;
 116                 unsigned int freq = wpa_s->assoc_freq;
 117                 struct wpa_bss *bss;
 118                 struct wpa_ssid *ssid = NULL;
 119                 int use_fast_assoc = 0;
 120
 121                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
 122                            "try to associate with the received credential "
 123                            "(freq=%u)", freq);
 124                 wpa_s->own_disconnect_req = 1;
 125                 wpa_supplicant_deauthenticate(wpa_s,
 126                                               WLAN_REASON_DEAUTH_LEAVING);
 127                 if (disabled) {
 128                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
 129                                    "disabled - wait for user to enable");
 130                         return 1;
 131                 }
 132                 wpa_s->after_wps = 5;
 133                 wpa_s->wps_freq = freq;
 134                 wpa_s->normal_scans = 0;
 135                 wpa_s->reassociate = 1;
 136
 137                 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
 138                            "without a new scan can be used");
 139                 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
 140                 if (bss) {
 141                         struct wpabuf *wps;
 142                         struct wps_parse_attr attr;
 143
 144                         wps = wpa_bss_get_vendor_ie_multi(bss,
 145                                                           WPS_IE_VENDOR_TYPE);
 146                         if (wps && wps_parse_msg(wps, &attr) == 0 &&
 147                             attr.wps_state &&
 148                             *attr.wps_state == WPS_STATE_CONFIGURED)
 149                                 use_fast_assoc = 1;
 150                         wpabuf_free(wps);
 151                 }
 152
 153                 /*
 154                  * Complete the next step from an eloop timeout to allow pending
 155                  * driver events related to the disconnection to be processed
 156                  * first. This makes it less likely for disconnection event to
 157                  * cause problems with the following connection.
 158                  */
 159                 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
 160                 wpas_wps_assoc_with_cred_cancel(wpa_s);
 161                 eloop_register_timeout(0, 10000,
 162                                        wpas_wps_assoc_with_cred, wpa_s,
 163                                        use_fast_assoc ? (void *) 1 :
 164                                        (void *) 0);
 165                 return 1;
 166         }
 167
 168         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 169                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 170                            "for external credential processing");
 171                 wpas_clear_wps(wpa_s);
 172                 wpa_s->own_disconnect_req = 1;
 173                 wpa_supplicant_deauthenticate(wpa_s,
 174                                               WLAN_REASON_DEAUTH_LEAVING);
 175                 return 1;
 176         }
 177
 178         return 0;
 179 }
 180
 181
 182 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 183                                          struct wpa_ssid *ssid,
 184                                          const struct wps_credential *cred)
 185 {
 186         struct wpa_driver_capa capa;
 187         struct wpa_bss *bss;
 188         const u8 *ie;
 189         struct wpa_ie_data adv;
 190         int wpa2 = 0, ccmp = 0;
 191
 192         /*
 193          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 194          * case they are configured for mixed mode operation (WPA+WPA2 and
 195          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 196          * actually supports stronger security and select that if the client
 197          * has support for it, too.
 198          */
 199
 200         if (wpa_drv_get_capa(wpa_s, &capa))
 201                 return; /* Unknown what driver supports */
 202
 203         if (ssid->ssid == NULL)
 204                 return;
 205         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 206         if (bss == NULL) {
 207                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 208                            "table - use credential as-is");
 209                 return;
 210         }
 211
 212         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 213
 214         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 215         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 216                 wpa2 = 1;
 217                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 218                         ccmp = 1;
 219         } else {
 220                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 221                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 222                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 223                         ccmp = 1;
 224         }
 225
 226         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 227             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 228                 /*
 229                  * TODO: This could be the initial AP configuration and the
 230                  * Beacon contents could change shortly. Should request a new
 231                  * scan and delay addition of the network until the updated
 232                  * scan results are available.
 233                  */
 234                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 235                            "support - use credential as-is");
 236                 return;
 237         }
 238
 239         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 240             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 241             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 242                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 243                            "based on scan results");
 244                 if (wpa_s->conf->ap_scan == 1)
 245                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 246                 else
 247                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 248         }
 249
 250         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 251             (ssid->proto & WPA_PROTO_WPA) &&
 252             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 253                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 254                            "based on scan results");
 255                 if (wpa_s->conf->ap_scan == 1)
 256                         ssid->proto |= WPA_PROTO_RSN;
 257                 else
 258                         ssid->proto = WPA_PROTO_RSN;
 259         }
 260 }
 261
 262
 263 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
 264                                         struct wpa_ssid *new_ssid)
 265 {
 266         struct wpa_ssid *ssid, *next;
 267
 268         for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
 269              ssid = next, next = ssid ? ssid->next : NULL) {
 270                 /*
 271                  * new_ssid has already been added to the list in
 272                  * wpas_wps_add_network(), so skip it.
 273                  */
 274                 if (ssid == new_ssid)
 275                         continue;
 276
 277                 if (ssid->bssid_set || new_ssid->bssid_set) {
 278                         if (ssid->bssid_set != new_ssid->bssid_set)
 279                                 continue;
 280                         if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
 281                             0)
 282                                 continue;
 283                 }
 284
 285                 /* compare SSID */
 286                 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
 287                         continue;
 288
 289                 if (ssid->ssid && new_ssid->ssid) {
 290                         if (os_memcmp(ssid->ssid, new_ssid->ssid,
 291                                       ssid->ssid_len) != 0)
 292                                 continue;
 293                 } else if (ssid->ssid || new_ssid->ssid)
 294                         continue;
 295
 296                 /* compare security parameters */
 297                 if (ssid->auth_alg != new_ssid->auth_alg ||
 298                     ssid->key_mgmt != new_ssid->key_mgmt ||
 299                     (ssid->group_cipher != new_ssid->group_cipher &&
 300                      !(ssid->group_cipher & new_ssid->group_cipher &
 301                        WPA_CIPHER_CCMP)))
 302                         continue;
 303
 304                 /*
 305                  * Some existing WPS APs will send two creds in case they are
 306                  * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP).
 307                  * Try to merge these two creds if they are received in the same
 308                  * M8 message.
 309                  */
 310                 if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run &&
 311                     wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
 312                         if (new_ssid->passphrase && ssid->passphrase &&
 313                             os_strcmp(new_ssid->passphrase, ssid->passphrase) !=
 314                             0) {
 315                                 wpa_printf(MSG_DEBUG,
 316                                            "WPS: M8 Creds with different passphrase - do not merge");
 317                                 continue;
 318                         }
 319
 320                         if (new_ssid->psk_set &&
 321                             (!ssid->psk_set ||
 322                              os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) {
 323                                 wpa_printf(MSG_DEBUG,
 324                                            "WPS: M8 Creds with different PSK - do not merge");
 325                                 continue;
 326                         }
 327
 328                         if ((new_ssid->passphrase && !ssid->passphrase) ||
 329                             (!new_ssid->passphrase && ssid->passphrase)) {
 330                                 wpa_printf(MSG_DEBUG,
 331                                            "WPS: M8 Creds with different passphrase/PSK type - do not merge");
 332                                 continue;
 333                         }
 334
 335                         wpa_printf(MSG_DEBUG,
 336                                    "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message");
 337                         new_ssid->proto |= ssid->proto;
 338                         new_ssid->pairwise_cipher |= ssid->pairwise_cipher;
 339                 } else {
 340                         /*
 341                          * proto and pairwise_cipher difference matter for
 342                          * non-mixed-mode creds.
 343                          */
 344                         if (ssid->proto != new_ssid->proto ||
 345                             ssid->pairwise_cipher != new_ssid->pairwise_cipher)
 346                                 continue;
 347                 }
 348
 349                 /* Remove the duplicated older network entry. */
 350                 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
 351                 wpas_notify_network_removed(wpa_s, ssid);
 352                 if (wpa_s->current_ssid == ssid)
 353                         wpa_s->current_ssid = NULL;
 354                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 355         }
 356 }
 357
 358
 359 static int wpa_supplicant_wps_cred(void *ctx,
 360                                    const struct wps_credential *cred)
 361 {
 362         struct wpa_supplicant *wpa_s = ctx;
 363         struct wpa_ssid *ssid = wpa_s->current_ssid;
 364         u16 auth_type;
 365 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 366         int registrar = 0;
 367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 368
 369         if ((wpa_s->conf->wps_cred_processing == 1 ||
 370              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 371                 size_t blen = cred->cred_attr_len * 2 + 1;
 372                 char *buf = os_malloc(blen);
 373                 if (buf) {
 374                         wpa_snprintf_hex(buf, blen,
 375                                          cred->cred_attr, cred->cred_attr_len);
 376                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 377                                 WPS_EVENT_CRED_RECEIVED, buf);
 378                         os_free(buf);
 379                 }
 380
 381                 wpas_notify_wps_credential(wpa_s, cred);
 382         } else
 383                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 384
 385         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 386                         cred->cred_attr, cred->cred_attr_len);
 387
 388         if (wpa_s->conf->wps_cred_processing == 1)
 389                 return 0;
 390
 391         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 392         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 393                    cred->auth_type);
 394         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 395         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 396         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 397                         cred->key, cred->key_len);
 398         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 399                    MAC2STR(cred->mac_addr));
 400
 401         auth_type = cred->auth_type;
 402         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 403                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 404                            "auth_type into WPA2PSK");
 405                 auth_type = WPS_AUTH_WPA2PSK;
 406         }
 407
 408         if (auth_type != WPS_AUTH_OPEN &&
 409             auth_type != WPS_AUTH_WPAPSK &&
 410             auth_type != WPS_AUTH_WPA2PSK) {
 411                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 412                            "unsupported authentication type 0x%x",
 413                            auth_type);
 414                 return 0;
 415         }
 416
 417         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 418                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 419                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 420                                    "invalid Network Key length %lu",
 421                                    (unsigned long) cred->key_len);
 422                         return -1;
 423                 }
 424         }
 425
 426         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 427                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 428                            "on the received credential");
 429 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 430                 if (ssid->eap.identity &&
 431                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 432                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 433                               WSC_ID_REGISTRAR_LEN) == 0)
 434                         registrar = 1;
 435 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 436                 os_free(ssid->eap.identity);
 437                 ssid->eap.identity = NULL;
 438                 ssid->eap.identity_len = 0;
 439                 os_free(ssid->eap.phase1);
 440                 ssid->eap.phase1 = NULL;
 441                 os_free(ssid->eap.eap_methods);
 442                 ssid->eap.eap_methods = NULL;
 443                 if (!ssid->p2p_group) {
 444                         ssid->temporary = 0;
 445                         ssid->bssid_set = 0;
 446                 }
 447                 ssid->disabled_until.sec = 0;
 448                 ssid->disabled_until.usec = 0;
 449                 ssid->auth_failures = 0;
 450         } else {
 451                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 452                            "received credential");
 453                 ssid = wpa_config_add_network(wpa_s->conf);
 454                 if (ssid == NULL)
 455                         return -1;
 456                 if (wpa_s->current_ssid) {
 457                         /*
 458                          * Should the GO issue multiple credentials for some
 459                          * reason, each credential should be marked as a
 460                          * temporary P2P group similarly to the one that gets
 461                          * marked as such based on the pre-configured values
 462                          * used for the WPS network block.
 463                          */
 464                         ssid->p2p_group = wpa_s->current_ssid->p2p_group;
 465                         ssid->temporary = wpa_s->current_ssid->temporary;
 466                 }
 467                 wpas_notify_network_added(wpa_s, ssid);
 468         }
 469
 470         wpa_config_set_network_defaults(ssid);
 471         ssid->wps_run = wpa_s->wps_run;
 472
 473         os_free(ssid->ssid);
 474         ssid->ssid = os_malloc(cred->ssid_len);
 475         if (ssid->ssid) {
 476                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 477                 ssid->ssid_len = cred->ssid_len;
 478         }
 479
 480         switch (cred->encr_type) {
 481         case WPS_ENCR_NONE:
 482                 break;
 483         case WPS_ENCR_TKIP:
 484                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 485                 break;
 486         case WPS_ENCR_AES:
 487                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 488                 if (wpa_s->drv_capa_known &&
 489                     (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) {
 490                         ssid->pairwise_cipher |= WPA_CIPHER_GCMP;
 491                         ssid->group_cipher |= WPA_CIPHER_GCMP;
 492                 }
 493                 break;
 494         }
 495
 496         switch (auth_type) {
 497         case WPS_AUTH_OPEN:
 498                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 499                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 500                 ssid->proto = 0;
 501 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 502                 if (registrar) {
 503                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 504                                 "id=%d - Credentials for an open "
 505                                 "network disabled by default - use "
 506                                 "'select_network %d' to enable",
 507                                 ssid->id, ssid->id);
 508                         ssid->disabled = 1;
 509                 }
 510 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 511                 break;
 512         case WPS_AUTH_WPAPSK:
 513                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 514                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 515                 ssid->proto = WPA_PROTO_WPA;
 516                 break;
 517         case WPS_AUTH_WPA2PSK:
 518                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 519                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 520                 ssid->proto = WPA_PROTO_RSN;
 521                 break;
 522         }
 523
 524         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 525                 if (cred->key_len == 2 * PMK_LEN) {
 526                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 527                                        PMK_LEN)) {
 528                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 529                                            "Key");
 530                                 return -1;
 531                         }
 532                         ssid->psk_set = 1;
 533                         ssid->export_keys = 1;
 534                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 535                         os_free(ssid->passphrase);
 536                         ssid->passphrase = os_malloc(cred->key_len + 1);
 537                         if (ssid->passphrase == NULL)
 538                                 return -1;
 539                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 540                         ssid->passphrase[cred->key_len] = '\0';
 541                         wpa_config_update_psk(ssid);
 542                         ssid->export_keys = 1;
 543                 } else {
 544                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 545                                    "length %lu",
 546                                    (unsigned long) cred->key_len);
 547                         return -1;
 548                 }
 549         }
 550         ssid->priority = wpa_s->conf->wps_priority;
 551
 552         wpas_wps_security_workaround(wpa_s, ssid, cred);
 553
 554         wpas_wps_remove_dup_network(wpa_s, ssid);
 555
 556 #ifndef CONFIG_NO_CONFIG_WRITE
 557         if (wpa_s->conf->update_config &&
 558             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 559                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 560                 return -1;
 561         }
 562 #endif /* CONFIG_NO_CONFIG_WRITE */
 563
 564         if (ssid->priority)
 565                 wpa_config_update_prio_list(wpa_s->conf);
 566
 567         /*
 568          * Optimize the post-WPS scan based on the channel used during
 569          * the provisioning in case EAP-Failure is not received.
 570          */
 571         wpa_s->after_wps = 5;
 572         wpa_s->wps_freq = wpa_s->assoc_freq;
 573
 574         return 0;
 575 }
 576
 577
 578 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 579                                          struct wps_event_m2d *m2d)
 580 {
 581         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 582                 "dev_password_id=%d config_error=%d",
 583                 m2d->dev_password_id, m2d->config_error);
 584         wpas_notify_wps_event_m2d(wpa_s, m2d);
 585 #ifdef CONFIG_P2P
 586         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 587                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 588                         "dev_password_id=%d config_error=%d",
 589                         m2d->dev_password_id, m2d->config_error);
 590         }
 591         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 592                 /*
 593                  * Notify P2P from eloop timeout to avoid issues with the
 594                  * interface getting removed while processing a message.
 595                  */
 596                 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s,
 597                                        NULL);
 598         }
 599 #endif /* CONFIG_P2P */
 600 }
 601
 602
 603 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 604 {
 605         struct wpa_supplicant *wpa_s = eloop_ctx;
 606         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 607         wpas_clear_wps(wpa_s);
 608 }
 609
 610
 611 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 612                                           struct wps_event_fail *fail)
 613 {
 614         if (fail->error_indication > 0 &&
 615             fail->error_indication < NUM_WPS_EI_VALUES) {
 616                 wpa_msg(wpa_s, MSG_INFO,
 617                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 618                         fail->msg, fail->config_error, fail->error_indication,
 619                         wps_ei_str(fail->error_indication));
 620                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 621                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 622                                 "msg=%d config_error=%d reason=%d (%s)",
 623                                 fail->msg, fail->config_error,
 624                                 fail->error_indication,
 625                                 wps_ei_str(fail->error_indication));
 626         } else {
 627                 wpa_msg(wpa_s, MSG_INFO,
 628                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 629                         fail->msg, fail->config_error);
 630                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 631                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 632                                 "msg=%d config_error=%d",
 633                                 fail->msg, fail->config_error);
 634         }
 635
 636         /*
 637          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 638          */
 639         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 640         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 641         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 642
 643         wpas_notify_wps_event_fail(wpa_s, fail);
 644         wpas_p2p_wps_failed(wpa_s, fail);
 645 }
 646
 647
 648 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 649
 650 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 651 {
 652         struct wpa_ssid *ssid;
 653         int changed = 0;
 654
 655         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 656
 657         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 658                 if (ssid->disabled_for_connect && ssid->disabled) {
 659                         ssid->disabled_for_connect = 0;
 660                         ssid->disabled = 0;
 661                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 662                         changed++;
 663                 }
 664         }
 665
 666         if (changed) {
 667 #ifndef CONFIG_NO_CONFIG_WRITE
 668                 if (wpa_s->conf->update_config &&
 669                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 670                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 671                                    "configuration");
 672                 }
 673 #endif /* CONFIG_NO_CONFIG_WRITE */
 674         }
 675 }
 676
 677
 678 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 679 {
 680         struct wpa_supplicant *wpa_s = eloop_ctx;
 681         /* Enable the networks disabled during wpas_wps_reassoc */
 682         wpas_wps_reenable_networks(wpa_s);
 683 }
 684
 685
 686 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 687 {
 688         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 689         wpa_s->wps_success = 1;
 690         wpas_notify_wps_event_success(wpa_s);
 691         if (wpa_s->current_ssid)
 692                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 693         wpa_s->extra_blacklist_count = 0;
 694
 695         /*
 696          * Enable the networks disabled during wpas_wps_reassoc after 10
 697          * seconds. The 10 seconds timer is to allow the data connection to be
 698          * formed before allowing other networks to be selected.
 699          */
 700         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 701                                NULL);
 702
 703         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 704 }
 705
 706
 707 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 708                                                struct wps_event_er_ap *ap)
 709 {
 710         char uuid_str[100];
 711         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 712
 713         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 714         if (ap->pri_dev_type)
 715                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 716                                      sizeof(dev_type));
 717         else
 718                 dev_type[0] = '\0';
 719
 720         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 721                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 722                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 723                 ap->friendly_name ? ap->friendly_name : "",
 724                 ap->manufacturer ? ap->manufacturer : "",
 725                 ap->model_description ? ap->model_description : "",
 726                 ap->model_name ? ap->model_name : "",
 727                 ap->manufacturer_url ? ap->manufacturer_url : "",
 728                 ap->model_url ? ap->model_url : "");
 729 }
 730
 731
 732 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 733                                                   struct wps_event_er_ap *ap)
 734 {
 735         char uuid_str[100];
 736         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 737         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 738 }
 739
 740
 741 static void wpa_supplicant_wps_event_er_enrollee_add(
 742         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 743 {
 744         char uuid_str[100];
 745         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 746
 747         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 748         if (enrollee->pri_dev_type)
 749                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 750                                      sizeof(dev_type));
 751         else
 752                 dev_type[0] = '\0';
 753
 754         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 755                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 756                 "|%s|%s|%s|%s|%s|",
 757                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 758                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 759                 enrollee->dev_name ? enrollee->dev_name : "",
 760                 enrollee->manufacturer ? enrollee->manufacturer : "",
 761                 enrollee->model_name ? enrollee->model_name : "",
 762                 enrollee->model_number ? enrollee->model_number : "",
 763                 enrollee->serial_number ? enrollee->serial_number : "");
 764 }
 765
 766
 767 static void wpa_supplicant_wps_event_er_enrollee_remove(
 768         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 769 {
 770         char uuid_str[100];
 771         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 772         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 773                 uuid_str, MAC2STR(enrollee->mac_addr));
 774 }
 775
 776
 777 static void wpa_supplicant_wps_event_er_ap_settings(
 778         struct wpa_supplicant *wpa_s,
 779         struct wps_event_er_ap_settings *ap_settings)
 780 {
 781         char uuid_str[100];
 782         char key_str[65];
 783         const struct wps_credential *cred = ap_settings->cred;
 784
 785         key_str[0] = '\0';
 786         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 787                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 788                         os_memcpy(key_str, cred->key, cred->key_len);
 789                         key_str[cred->key_len] = '\0';
 790                 }
 791         }
 792
 793         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 794         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 795         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 796                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 797                      "key=%s",
 798                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 799                      cred->auth_type, cred->encr_type, key_str);
 800 }
 801
 802
 803 static void wpa_supplicant_wps_event_er_set_sel_reg(
 804         struct wpa_supplicant *wpa_s,
 805         struct wps_event_er_set_selected_registrar *ev)
 806 {
 807         char uuid_str[100];
 808
 809         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 810         switch (ev->state) {
 811         case WPS_ER_SET_SEL_REG_START:
 812                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 813                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 814                         "sel_reg_config_methods=0x%x",
 815                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 816                         ev->sel_reg_config_methods);
 817                 break;
 818         case WPS_ER_SET_SEL_REG_DONE:
 819                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 820                         "uuid=%s state=DONE", uuid_str);
 821                 break;
 822         case WPS_ER_SET_SEL_REG_FAILED:
 823                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 824                         "uuid=%s state=FAILED", uuid_str);
 825                 break;
 826         }
 827 }
 828
 829
 830 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 831                                      union wps_event_data *data)
 832 {
 833         struct wpa_supplicant *wpa_s = ctx;
 834         switch (event) {
 835         case WPS_EV_M2D:
 836                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 837                 break;
 838         case WPS_EV_FAIL:
 839                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 840                 break;
 841         case WPS_EV_SUCCESS:
 842                 wpa_supplicant_wps_event_success(wpa_s);
 843                 break;
 844         case WPS_EV_PWD_AUTH_FAIL:
 845 #ifdef CONFIG_AP
 846                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 847                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 848 #endif /* CONFIG_AP */
 849                 break;
 850         case WPS_EV_PBC_OVERLAP:
 851                 break;
 852         case WPS_EV_PBC_TIMEOUT:
 853                 break;
 854         case WPS_EV_PBC_ACTIVE:
 855                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 856                 break;
 857         case WPS_EV_PBC_DISABLE:
 858                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 859                 break;
 860         case WPS_EV_ER_AP_ADD:
 861                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 862                 break;
 863         case WPS_EV_ER_AP_REMOVE:
 864                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 865                 break;
 866         case WPS_EV_ER_ENROLLEE_ADD:
 867                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 868                                                          &data->enrollee);
 869                 break;
 870         case WPS_EV_ER_ENROLLEE_REMOVE:
 871                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 872                                                             &data->enrollee);
 873                 break;
 874         case WPS_EV_ER_AP_SETTINGS:
 875                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 876                                                         &data->ap_settings);
 877                 break;
 878         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 879                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 880                                                         &data->set_sel_reg);
 881                 break;
 882         case WPS_EV_AP_PIN_SUCCESS:
 883                 break;
 884         }
 885 }
 886
 887
 888 static int wpa_supplicant_wps_rf_band(void *ctx)
 889 {
 890         struct wpa_supplicant *wpa_s = ctx;
 891
 892         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 893                 return 0;
 894
 895         return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ :
 896                 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 897 }
 898
 899
 900 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 901 {
 902         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 903             eap_is_wps_pin_enrollee(&ssid->eap))
 904                 return WPS_REQ_ENROLLEE;
 905         else
 906                 return WPS_REQ_REGISTRAR;
 907 }
 908
 909
 910 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 911 {
 912         int id;
 913         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 914
 915         wpa_s->after_wps = 0;
 916         wpa_s->known_wps_freq = 0;
 917
 918         prev_current = wpa_s->current_ssid;
 919
 920         /* Enable the networks disabled during wpas_wps_reassoc */
 921         wpas_wps_reenable_networks(wpa_s);
 922
 923         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 924         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 925
 926         /* Remove any existing WPS network from configuration */
 927         ssid = wpa_s->conf->ssid;
 928         while (ssid) {
 929                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 930                         if (ssid == wpa_s->current_ssid) {
 931                                 wpa_s->own_disconnect_req = 1;
 932                                 wpa_supplicant_deauthenticate(
 933                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 934                         }
 935                         id = ssid->id;
 936                         remove_ssid = ssid;
 937                 } else
 938                         id = -1;
 939                 ssid = ssid->next;
 940                 if (id >= 0) {
 941                         if (prev_current == remove_ssid) {
 942                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 943                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 944                                                        NULL);
 945                         }
 946                         wpas_notify_network_removed(wpa_s, remove_ssid);
 947                         wpa_config_remove_network(wpa_s->conf, id);
 948                 }
 949         }
 950
 951         wpas_wps_clear_ap_info(wpa_s);
 952 }
 953
 954
 955 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 956 {
 957         struct wpa_supplicant *wpa_s = eloop_ctx;
 958         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 959                 "out");
 960         wpas_clear_wps(wpa_s);
 961 }
 962
 963
 964 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 965                                               int registrar, const u8 *dev_addr,
 966                                               const u8 *bssid)
 967 {
 968         struct wpa_ssid *ssid;
 969
 970         ssid = wpa_config_add_network(wpa_s->conf);
 971         if (ssid == NULL)
 972                 return NULL;
 973         wpas_notify_network_added(wpa_s, ssid);
 974         wpa_config_set_network_defaults(ssid);
 975         ssid->temporary = 1;
 976         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 977             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 978             wpa_config_set(ssid, "identity", registrar ?
 979                            "\"" WSC_ID_REGISTRAR "\"" :
 980                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 981                 wpas_notify_network_removed(wpa_s, ssid);
 982                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 983                 return NULL;
 984         }
 985
 986 #ifdef CONFIG_P2P
 987         if (dev_addr)
 988                 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
 989 #endif /* CONFIG_P2P */
 990
 991         if (bssid) {
 992 #ifndef CONFIG_P2P
 993                 struct wpa_bss *bss;
 994                 int count = 0;
 995 #endif /* CONFIG_P2P */
 996
 997                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 998                 ssid->bssid_set = 1;
 999
1000                 /*
1001                  * Note: With P2P, the SSID may change at the time the WPS
1002                  * provisioning is started, so better not filter the AP based
1003                  * on the current SSID in the scan results.
1004                  */
1005 #ifndef CONFIG_P2P
1006                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1007                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
1008                                 continue;
1009
1010                         os_free(ssid->ssid);
1011                         ssid->ssid = os_malloc(bss->ssid_len);
1012                         if (ssid->ssid == NULL)
1013                                 break;
1014                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1015                         ssid->ssid_len = bss->ssid_len;
1016                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1017                                           "scan results",
1018                                           ssid->ssid, ssid->ssid_len);
1019                         count++;
1020                 }
1021
1022                 if (count > 1) {
1023                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1024                                    "for the AP; use wildcard");
1025                         os_free(ssid->ssid);
1026                         ssid->ssid = NULL;
1027                         ssid->ssid_len = 0;
1028                 }
1029 #endif /* CONFIG_P2P */
1030         }
1031
1032         return ssid;
1033 }
1034
1035
1036 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1037                                   struct wpa_ssid *selected)
1038 {
1039         struct wpa_ssid *ssid;
1040
1041         if (wpa_s->current_ssid) {
1042                 wpa_s->own_disconnect_req = 1;
1043                 wpa_supplicant_deauthenticate(
1044                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1045         }
1046
1047         /* Mark all other networks disabled and trigger reassociation */
1048         ssid = wpa_s->conf->ssid;
1049         while (ssid) {
1050                 int was_disabled = ssid->disabled;
1051                 ssid->disabled_for_connect = 0;
1052                 /*
1053                  * In case the network object corresponds to a persistent group
1054                  * then do not send out network disabled signal. In addition,
1055                  * do not change disabled status of persistent network objects
1056                  * from 2 to 1 should we connect to another network.
1057                  */
1058                 if (was_disabled != 2) {
1059                         ssid->disabled = ssid != selected;
1060                         if (was_disabled != ssid->disabled) {
1061                                 if (ssid->disabled)
1062                                         ssid->disabled_for_connect = 1;
1063                                 wpas_notify_network_enabled_changed(wpa_s,
1064                                                                     ssid);
1065                         }
1066                 }
1067                 ssid = ssid->next;
1068         }
1069 }
1070
1071
1072 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1073                              struct wpa_ssid *selected, const u8 *bssid,
1074                              int freq)
1075 {
1076         struct wpa_bss *bss;
1077
1078         wpa_s->wps_run++;
1079         if (wpa_s->wps_run == 0)
1080                 wpa_s->wps_run++;
1081         wpa_s->after_wps = 0;
1082         wpa_s->known_wps_freq = 0;
1083         if (freq) {
1084                 wpa_s->after_wps = 5;
1085                 wpa_s->wps_freq = freq;
1086         } else if (bssid) {
1087                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1088                 if (bss && bss->freq > 0) {
1089                         wpa_s->known_wps_freq = 1;
1090                         wpa_s->wps_freq = bss->freq;
1091                 }
1092         }
1093
1094         wpas_wps_temp_disable(wpa_s, selected);
1095
1096         wpa_s->disconnected = 0;
1097         wpa_s->reassociate = 1;
1098         wpa_s->scan_runs = 0;
1099         wpa_s->normal_scans = 0;
1100         wpa_s->wps_success = 0;
1101         wpa_s->blacklist_cleared = 0;
1102
1103         wpa_supplicant_cancel_sched_scan(wpa_s);
1104         wpa_supplicant_req_scan(wpa_s, 0, 0);
1105 }
1106
1107
1108 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1109                        int p2p_group)
1110 {
1111         struct wpa_ssid *ssid;
1112
1113 #ifdef CONFIG_AP
1114         if (wpa_s->ap_iface) {
1115                 wpa_printf(MSG_DEBUG,
1116                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1117                 return -1;
1118         }
1119 #endif /* CONFIG_AP */
1120         wpas_clear_wps(wpa_s);
1121         ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1122         if (ssid == NULL)
1123                 return -1;
1124         ssid->temporary = 1;
1125         ssid->p2p_group = p2p_group;
1126 #ifdef CONFIG_P2P
1127         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1128                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1129                 if (ssid->ssid) {
1130                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1131                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1132                                   ssid->ssid_len);
1133                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1134                                           "SSID", ssid->ssid, ssid->ssid_len);
1135                 }
1136         }
1137 #endif /* CONFIG_P2P */
1138         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1139                 return -1;
1140         if (wpa_s->wps_fragment_size)
1141                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1142         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1143                                wpa_s, NULL);
1144         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1145         return 0;
1146 }
1147
1148
1149 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1150                                  const u8 *dev_addr, const u8 *bssid,
1151                                  const char *pin, int p2p_group, u16 dev_pw_id,
1152                                  const u8 *peer_pubkey_hash,
1153                                  const u8 *ssid_val, size_t ssid_len, int freq)
1154 {
1155         struct wpa_ssid *ssid;
1156         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1157         unsigned int rpin = 0;
1158         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1159
1160 #ifdef CONFIG_AP
1161         if (wpa_s->ap_iface) {
1162                 wpa_printf(MSG_DEBUG,
1163                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1164                 return -1;
1165         }
1166 #endif /* CONFIG_AP */
1167         wpas_clear_wps(wpa_s);
1168         if (bssid && is_zero_ether_addr(bssid))
1169                 bssid = NULL;
1170         ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1171         if (ssid == NULL) {
1172                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1173                 return -1;
1174         }
1175         ssid->temporary = 1;
1176         ssid->p2p_group = p2p_group;
1177         if (ssid_val) {
1178                 ssid->ssid = os_malloc(ssid_len);
1179                 if (ssid->ssid) {
1180                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1181                         ssid->ssid_len = ssid_len;
1182                 }
1183         }
1184         if (peer_pubkey_hash) {
1185                 os_memcpy(hash, " pkhash=", 8);
1186                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1187                                            peer_pubkey_hash,
1188                                            WPS_OOB_PUBKEY_HASH_LEN);
1189         } else {
1190                 hash[0] = '\0';
1191         }
1192 #ifdef CONFIG_P2P
1193         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1194                 os_free(ssid->ssid);
1195                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1196                 if (ssid->ssid) {
1197                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1198                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1199                                   ssid->ssid_len);
1200                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1201                                           "SSID", ssid->ssid, ssid->ssid_len);
1202                 }
1203         }
1204 #endif /* CONFIG_P2P */
1205         if (pin)
1206                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1207                             pin, dev_pw_id, hash);
1208         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1209                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1210                             dev_pw_id, hash);
1211         } else {
1212                 rpin = wps_generate_pin();
1213                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1214                             rpin, dev_pw_id, hash);
1215         }
1216         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1217                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1218                 return -1;
1219         }
1220         if (wpa_s->wps_fragment_size)
1221                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1222         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1223                                wpa_s, NULL);
1224         wpa_s->wps_ap_iter = 1;
1225         wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1226         return rpin;
1227 }
1228
1229
1230 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1231                        const char *pin, int p2p_group, u16 dev_pw_id)
1232 {
1233         os_get_reltime(&wpa_s->wps_pin_start_time);
1234         return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1235                                      dev_pw_id, NULL, NULL, 0, 0);
1236 }
1237
1238
1239 /* Cancel the wps pbc/pin requests */
1240 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1241 {
1242 #ifdef CONFIG_AP
1243         if (wpa_s->ap_iface) {
1244                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1245                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1246         }
1247 #endif /* CONFIG_AP */
1248
1249         if (wpa_s->wpa_state == WPA_SCANNING ||
1250             wpa_s->wpa_state == WPA_DISCONNECTED) {
1251                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1252                 wpa_supplicant_cancel_scan(wpa_s);
1253                 wpas_clear_wps(wpa_s);
1254         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1255                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1256                            "deauthenticate");
1257                 wpa_s->own_disconnect_req = 1;
1258                 wpa_supplicant_deauthenticate(wpa_s,
1259                                               WLAN_REASON_DEAUTH_LEAVING);
1260                 wpas_clear_wps(wpa_s);
1261         } else {
1262                 wpas_wps_reenable_networks(wpa_s);
1263                 wpas_wps_clear_ap_info(wpa_s);
1264                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1265                     0)
1266                         wpas_clear_wps(wpa_s);
1267         }
1268
1269         wpa_s->after_wps = 0;
1270
1271         return 0;
1272 }
1273
1274
1275 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1276                        const char *pin, struct wps_new_ap_settings *settings)
1277 {
1278         struct wpa_ssid *ssid;
1279         char val[200];
1280         char *pos, *end;
1281         int res;
1282
1283 #ifdef CONFIG_AP
1284         if (wpa_s->ap_iface) {
1285                 wpa_printf(MSG_DEBUG,
1286                            "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1287                 return -1;
1288         }
1289 #endif /* CONFIG_AP */
1290         if (!pin)
1291                 return -1;
1292         wpas_clear_wps(wpa_s);
1293         ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1294         if (ssid == NULL)
1295                 return -1;
1296         ssid->temporary = 1;
1297         pos = val;
1298         end = pos + sizeof(val);
1299         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1300         if (os_snprintf_error(end - pos, res))
1301                 return -1;
1302         pos += res;
1303         if (settings) {
1304                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1305                                   "new_encr=%s new_key=%s",
1306                                   settings->ssid_hex, settings->auth,
1307                                   settings->encr, settings->key_hex);
1308                 if (os_snprintf_error(end - pos, res))
1309                         return -1;
1310                 pos += res;
1311         }
1312         res = os_snprintf(pos, end - pos, "\"");
1313         if (os_snprintf_error(end - pos, res))
1314                 return -1;
1315         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1316                 return -1;
1317         if (wpa_s->wps_fragment_size)
1318                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1319         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1320                                wpa_s, NULL);
1321         wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1322         return 0;
1323 }
1324
1325
1326 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1327                                const u8 *p2p_dev_addr, const u8 *psk,
1328                                size_t psk_len)
1329 {
1330         if (is_zero_ether_addr(p2p_dev_addr)) {
1331                 wpa_printf(MSG_DEBUG,
1332                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1333                            MAC2STR(mac_addr));
1334         } else {
1335                 wpa_printf(MSG_DEBUG,
1336                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1337                            " P2P Device Addr " MACSTR,
1338                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1339         }
1340         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1341
1342         /* TODO */
1343
1344         return 0;
1345 }
1346
1347
1348 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1349                                    const struct wps_device_data *dev)
1350 {
1351         char uuid[40], txt[400];
1352         int len;
1353         char devtype[WPS_DEV_TYPE_BUFSIZE];
1354         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1355                 return;
1356         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1357         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1358                           " [%s|%s|%s|%s|%s|%s]",
1359                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1360                           dev->manufacturer, dev->model_name,
1361                           dev->model_number, dev->serial_number,
1362                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1363                                                sizeof(devtype)));
1364         if (!os_snprintf_error(sizeof(txt), len))
1365                 wpa_printf(MSG_INFO, "%s", txt);
1366 }
1367
1368
1369 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1370                                     u16 sel_reg_config_methods)
1371 {
1372 #ifdef CONFIG_WPS_ER
1373         struct wpa_supplicant *wpa_s = ctx;
1374
1375         if (wpa_s->wps_er == NULL)
1376                 return;
1377         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1378                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1379                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1380         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1381                            sel_reg_config_methods);
1382 #endif /* CONFIG_WPS_ER */
1383 }
1384
1385
1386 static u16 wps_fix_config_methods(u16 config_methods)
1387 {
1388         if ((config_methods &
1389              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1390               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1391                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1392                            "virtual_display for WPS 2.0 compliance");
1393                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1394         }
1395         if ((config_methods &
1396              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1397               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1398                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1399                            "virtual_push_button for WPS 2.0 compliance");
1400                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1401         }
1402
1403         return config_methods;
1404 }
1405
1406
1407 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1408                               struct wps_context *wps)
1409 {
1410         char buf[50];
1411         const char *src;
1412
1413         if (is_nil_uuid(wpa_s->conf->uuid)) {
1414                 struct wpa_supplicant *first;
1415                 first = wpa_s->global->ifaces;
1416                 while (first && first->next)
1417                         first = first->next;
1418                 if (first && first != wpa_s) {
1419                         if (wps != wpa_s->global->ifaces->wps)
1420                                 os_memcpy(wps->uuid,
1421                                           wpa_s->global->ifaces->wps->uuid,
1422                                           WPS_UUID_LEN);
1423                         src = "from the first interface";
1424                 } else {
1425                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1426                         src = "based on MAC address";
1427                 }
1428         } else {
1429                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1430                 src = "based on configuration";
1431         }
1432
1433         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1434         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1435 }
1436
1437
1438 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1439                                        struct wps_context *wps)
1440 {
1441         wpabuf_free(wps->dev.vendor_ext_m1);
1442         wps->dev.vendor_ext_m1 = NULL;
1443
1444         if (wpa_s->conf->wps_vendor_ext_m1) {
1445                 wps->dev.vendor_ext_m1 =
1446                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1447                 if (!wps->dev.vendor_ext_m1) {
1448                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1449                                    "allocate memory for vendor_ext_m1");
1450                 }
1451         }
1452 }
1453
1454
1455 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1456 {
1457         struct wps_context *wps;
1458         struct wps_registrar_config rcfg;
1459         struct hostapd_hw_modes *modes;
1460         u16 m;
1461
1462         wps = os_zalloc(sizeof(*wps));
1463         if (wps == NULL)
1464                 return -1;
1465
1466         wps->cred_cb = wpa_supplicant_wps_cred;
1467         wps->event_cb = wpa_supplicant_wps_event;
1468         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1469         wps->cb_ctx = wpa_s;
1470
1471         wps->dev.device_name = wpa_s->conf->device_name;
1472         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1473         wps->dev.model_name = wpa_s->conf->model_name;
1474         wps->dev.model_number = wpa_s->conf->model_number;
1475         wps->dev.serial_number = wpa_s->conf->serial_number;
1476         wps->config_methods =
1477                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1478         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1479             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1480                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1481                            "methods are not allowed at the same time");
1482                 os_free(wps);
1483                 return -1;
1484         }
1485         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1486         wps->dev.config_methods = wps->config_methods;
1487         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1488                   WPS_DEV_TYPE_LEN);
1489
1490         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1491         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1492                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1493
1494         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1495
1496         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1497         modes = wpa_s->hw.modes;
1498         if (modes) {
1499                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1500                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1501                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1502                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1503                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1504                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1505                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1506                                 wps->dev.rf_bands |= WPS_RF_60GHZ;
1507                 }
1508         }
1509         if (wps->dev.rf_bands == 0) {
1510                 /*
1511                  * Default to claiming support for both bands if the driver
1512                  * does not provide support for fetching supported bands.
1513                  */
1514                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1515         }
1516         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1517         wpas_wps_set_uuid(wpa_s, wps);
1518
1519         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1520         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1521
1522         os_memset(&rcfg, 0, sizeof(rcfg));
1523         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1524         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1525         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1526         rcfg.cb_ctx = wpa_s;
1527
1528         wps->registrar = wps_registrar_init(wps, &rcfg);
1529         if (wps->registrar == NULL) {
1530                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1531                 os_free(wps);
1532                 return -1;
1533         }
1534
1535         wpa_s->wps = wps;
1536
1537         return 0;
1538 }
1539
1540
1541 #ifdef CONFIG_WPS_ER
1542 static void wpas_wps_nfc_clear(struct wps_context *wps)
1543 {
1544         wps->ap_nfc_dev_pw_id = 0;
1545         wpabuf_free(wps->ap_nfc_dh_pubkey);
1546         wps->ap_nfc_dh_pubkey = NULL;
1547         wpabuf_free(wps->ap_nfc_dh_privkey);
1548         wps->ap_nfc_dh_privkey = NULL;
1549         wpabuf_free(wps->ap_nfc_dev_pw);
1550         wps->ap_nfc_dev_pw = NULL;
1551 }
1552 #endif /* CONFIG_WPS_ER */
1553
1554
1555 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1556 {
1557         wpas_wps_assoc_with_cred_cancel(wpa_s);
1558         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1559         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1560         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1561         wpas_wps_clear_ap_info(wpa_s);
1562
1563 #ifdef CONFIG_P2P
1564         eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1565 #endif /* CONFIG_P2P */
1566
1567         if (wpa_s->wps == NULL)
1568                 return;
1569
1570 #ifdef CONFIG_WPS_ER
1571         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1572         wpa_s->wps_er = NULL;
1573         wpas_wps_nfc_clear(wpa_s->wps);
1574 #endif /* CONFIG_WPS_ER */
1575
1576         wps_registrar_deinit(wpa_s->wps->registrar);
1577         wpabuf_free(wpa_s->wps->dh_pubkey);
1578         wpabuf_free(wpa_s->wps->dh_privkey);
1579         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1580         os_free(wpa_s->wps->network_key);
1581         os_free(wpa_s->wps);
1582         wpa_s->wps = NULL;
1583 }
1584
1585
1586 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1587                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1588 {
1589         struct wpabuf *wps_ie;
1590
1591         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1592                 return -1;
1593
1594         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1595         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1596                 if (!wps_ie) {
1597                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1598                         return 0;
1599                 }
1600
1601                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1602                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1603                                    "without active PBC Registrar");
1604                         wpabuf_free(wps_ie);
1605                         return 0;
1606                 }
1607
1608                 /* TODO: overlap detection */
1609                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1610                            "(Active PBC)");
1611                 wpabuf_free(wps_ie);
1612                 return 1;
1613         }
1614
1615         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1616                 if (!wps_ie) {
1617                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1618                         return 0;
1619                 }
1620
1621                 /*
1622                  * Start with WPS APs that advertise our address as an
1623                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1624                  * allow any WPS AP after couple of scans since some APs do not
1625                  * set Selected Registrar attribute properly when using
1626                  * external Registrar.
1627                  */
1628                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1629                         struct os_reltime age;
1630
1631                         os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1632
1633                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1634                             age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1635                                 wpa_printf(MSG_DEBUG,
1636                                            "   skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1637                                            wpa_s->scan_runs, (int) age.sec);
1638                                 wpabuf_free(wps_ie);
1639                                 return 0;
1640                         }
1641                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1642                 } else {
1643                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1644                                    "(Authorized MAC or Active PIN)");
1645                 }
1646                 wpabuf_free(wps_ie);
1647                 return 1;
1648         }
1649
1650         if (wps_ie) {
1651                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1652                 wpabuf_free(wps_ie);
1653                 return 1;
1654         }
1655
1656         return -1;
1657 }
1658
1659
1660 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1661                               struct wpa_ssid *ssid,
1662                               struct wpa_bss *bss)
1663 {
1664         struct wpabuf *wps_ie = NULL;
1665         int ret = 0;
1666
1667         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1668                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1669                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1670                         /* allow wildcard SSID for WPS PBC */
1671                         ret = 1;
1672                 }
1673         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1674                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1675                 if (wps_ie &&
1676                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1677                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1678                         /* allow wildcard SSID for WPS PIN */
1679                         ret = 1;
1680                 }
1681         }
1682
1683         if (!ret && ssid->bssid_set &&
1684             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1685                 /* allow wildcard SSID due to hardcoded BSSID match */
1686                 ret = 1;
1687         }
1688
1689 #ifdef CONFIG_WPS_STRICT
1690         if (wps_ie) {
1691                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1692                                                    0, bss->bssid) < 0)
1693                         ret = 0;
1694                 if (bss->beacon_ie_len) {
1695                         struct wpabuf *bcn_wps;
1696                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1697                                 bss, WPS_IE_VENDOR_TYPE);
1698                         if (bcn_wps == NULL) {
1699                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1700                                            "missing from AP Beacon");
1701                                 ret = 0;
1702                         } else {
1703                                 if (wps_validate_beacon(wps_ie) < 0)
1704                                         ret = 0;
1705                                 wpabuf_free(bcn_wps);
1706                         }
1707                 }
1708         }
1709 #endif /* CONFIG_WPS_STRICT */
1710
1711         wpabuf_free(wps_ie);
1712
1713         return ret;
1714 }
1715
1716
1717 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1718                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1719 {
1720         const u8 *sel_uuid;
1721         struct wpabuf *wps_ie;
1722         int ret = 0;
1723         size_t i;
1724
1725         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1726                 return 0;
1727
1728         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1729                    "present in scan results; selected BSSID " MACSTR,
1730                    MAC2STR(selected->bssid));
1731
1732         /* Make sure that only one AP is in active PBC mode */
1733         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1734         if (wps_ie) {
1735                 sel_uuid = wps_get_uuid_e(wps_ie);
1736                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1737                             sel_uuid, UUID_LEN);
1738         } else {
1739                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1740                            "WPS IE?!");
1741                 sel_uuid = NULL;
1742         }
1743
1744         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1745                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1746
1747                 if (!ap->pbc_active ||
1748                     os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1749                         continue;
1750
1751                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1752                            MACSTR, MAC2STR(ap->bssid));
1753                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1754                             ap->uuid, UUID_LEN);
1755                 if (sel_uuid == NULL ||
1756                     os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1757                         ret = 1; /* PBC overlap */
1758                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1759                                 MACSTR " and " MACSTR,
1760                                 MAC2STR(selected->bssid),
1761                                 MAC2STR(ap->bssid));
1762                         break;
1763                 }
1764
1765                 /* TODO: verify that this is reasonable dual-band situation */
1766         }
1767
1768         wpabuf_free(wps_ie);
1769
1770         return ret;
1771 }
1772
1773
1774 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1775 {
1776         struct wpa_bss *bss;
1777         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1778
1779         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1780                 return;
1781
1782         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1783                 struct wpabuf *ie;
1784                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1785                 if (!ie)
1786                         continue;
1787                 if (wps_is_selected_pbc_registrar(ie))
1788                         pbc++;
1789                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1790                         auth++;
1791                 else if (wps_is_selected_pin_registrar(ie))
1792                         pin++;
1793                 else
1794                         wps++;
1795                 wpabuf_free(ie);
1796         }
1797
1798         if (pbc)
1799                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1800         else if (auth)
1801                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1802         else if (pin)
1803                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1804         else if (wps)
1805                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1806 }
1807
1808
1809 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1810 {
1811         struct wpa_ssid *ssid;
1812
1813         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1814                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1815                         return 1;
1816         }
1817
1818         return 0;
1819 }
1820
1821
1822 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1823                               char *end)
1824 {
1825         struct wpabuf *wps_ie;
1826         int ret;
1827
1828         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1829         if (wps_ie == NULL)
1830                 return 0;
1831
1832         ret = wps_attr_text(wps_ie, buf, end);
1833         wpabuf_free(wps_ie);
1834         return ret;
1835 }
1836
1837
1838 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1839 {
1840 #ifdef CONFIG_WPS_ER
1841         if (wpa_s->wps_er) {
1842                 wps_er_refresh(wpa_s->wps_er);
1843                 return 0;
1844         }
1845         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1846         if (wpa_s->wps_er == NULL)
1847                 return -1;
1848         return 0;
1849 #else /* CONFIG_WPS_ER */
1850         return 0;
1851 #endif /* CONFIG_WPS_ER */
1852 }
1853
1854
1855 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1856 {
1857 #ifdef CONFIG_WPS_ER
1858         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1859         wpa_s->wps_er = NULL;
1860 #endif /* CONFIG_WPS_ER */
1861 }
1862
1863
1864 #ifdef CONFIG_WPS_ER
1865 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1866                         const char *uuid, const char *pin)
1867 {
1868         u8 u[UUID_LEN];
1869         const u8 *use_uuid = NULL;
1870         u8 addr_buf[ETH_ALEN];
1871
1872         if (os_strcmp(uuid, "any") == 0) {
1873         } else if (uuid_str2bin(uuid, u) == 0) {
1874                 use_uuid = u;
1875         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1876                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1877                 if (use_uuid == NULL)
1878                         return -1;
1879         } else
1880                 return -1;
1881         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1882                                      use_uuid,
1883                                      (const u8 *) pin, os_strlen(pin), 300);
1884 }
1885
1886
1887 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1888 {
1889         u8 u[UUID_LEN], *use_uuid = NULL;
1890         u8 addr[ETH_ALEN], *use_addr = NULL;
1891
1892         if (uuid_str2bin(uuid, u) == 0)
1893                 use_uuid = u;
1894         else if (hwaddr_aton(uuid, addr) == 0)
1895                 use_addr = addr;
1896         else
1897                 return -1;
1898         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1899 }
1900
1901
1902 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1903                       const char *pin)
1904 {
1905         u8 u[UUID_LEN], *use_uuid = NULL;
1906         u8 addr[ETH_ALEN], *use_addr = NULL;
1907
1908         if (uuid_str2bin(uuid, u) == 0)
1909                 use_uuid = u;
1910         else if (hwaddr_aton(uuid, addr) == 0)
1911                 use_addr = addr;
1912         else
1913                 return -1;
1914
1915         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1916                             os_strlen(pin));
1917 }
1918
1919
1920 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1921                                     struct wps_credential *cred)
1922 {
1923         os_memset(cred, 0, sizeof(*cred));
1924         if (ssid->ssid_len > SSID_MAX_LEN)
1925                 return -1;
1926         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1927         cred->ssid_len = ssid->ssid_len;
1928         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1929                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1930                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1931                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1932                         cred->encr_type = WPS_ENCR_AES;
1933                 else
1934                         cred->encr_type = WPS_ENCR_TKIP;
1935                 if (ssid->passphrase) {
1936                         cred->key_len = os_strlen(ssid->passphrase);
1937                         if (cred->key_len >= 64)
1938                                 return -1;
1939                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1940                 } else if (ssid->psk_set) {
1941                         cred->key_len = 32;
1942                         os_memcpy(cred->key, ssid->psk, 32);
1943                 } else
1944                         return -1;
1945         } else {
1946                 cred->auth_type = WPS_AUTH_OPEN;
1947                 cred->encr_type = WPS_ENCR_NONE;
1948         }
1949
1950         return 0;
1951 }
1952
1953
1954 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1955                            int id)
1956 {
1957         u8 u[UUID_LEN], *use_uuid = NULL;
1958         u8 addr[ETH_ALEN], *use_addr = NULL;
1959         struct wpa_ssid *ssid;
1960         struct wps_credential cred;
1961         int ret;
1962
1963         if (uuid_str2bin(uuid, u) == 0)
1964                 use_uuid = u;
1965         else if (hwaddr_aton(uuid, addr) == 0)
1966                 use_addr = addr;
1967         else
1968                 return -1;
1969         ssid = wpa_config_get_network(wpa_s->conf, id);
1970         if (ssid == NULL || ssid->ssid == NULL)
1971                 return -1;
1972
1973         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1974                 return -1;
1975         ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1976         os_memset(&cred, 0, sizeof(cred));
1977         return ret;
1978 }
1979
1980
1981 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1982                        const char *pin, struct wps_new_ap_settings *settings)
1983 {
1984         u8 u[UUID_LEN], *use_uuid = NULL;
1985         u8 addr[ETH_ALEN], *use_addr = NULL;
1986         struct wps_credential cred;
1987         size_t len;
1988
1989         if (uuid_str2bin(uuid, u) == 0)
1990                 use_uuid = u;
1991         else if (hwaddr_aton(uuid, addr) == 0)
1992                 use_addr = addr;
1993         else
1994                 return -1;
1995         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1996             settings->encr == NULL || settings->key_hex == NULL)
1997                 return -1;
1998
1999         os_memset(&cred, 0, sizeof(cred));
2000         len = os_strlen(settings->ssid_hex);
2001         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2002             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2003                 return -1;
2004         cred.ssid_len = len / 2;
2005
2006         len = os_strlen(settings->key_hex);
2007         if ((len & 1) || len > 2 * sizeof(cred.key) ||
2008             hexstr2bin(settings->key_hex, cred.key, len / 2))
2009                 return -1;
2010         cred.key_len = len / 2;
2011
2012         if (os_strcmp(settings->auth, "OPEN") == 0)
2013                 cred.auth_type = WPS_AUTH_OPEN;
2014         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2015                 cred.auth_type = WPS_AUTH_WPAPSK;
2016         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2017                 cred.auth_type = WPS_AUTH_WPA2PSK;
2018         else
2019                 return -1;
2020
2021         if (os_strcmp(settings->encr, "NONE") == 0)
2022                 cred.encr_type = WPS_ENCR_NONE;
2023 #ifdef CONFIG_TESTING_OPTIONS
2024         else if (os_strcmp(settings->encr, "WEP") == 0)
2025                 cred.encr_type = WPS_ENCR_WEP;
2026 #endif /* CONFIG_TESTING_OPTIONS */
2027         else if (os_strcmp(settings->encr, "TKIP") == 0)
2028                 cred.encr_type = WPS_ENCR_TKIP;
2029         else if (os_strcmp(settings->encr, "CCMP") == 0)
2030                 cred.encr_type = WPS_ENCR_AES;
2031         else
2032                 return -1;
2033
2034         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2035                              (const u8 *) pin, os_strlen(pin), &cred);
2036 }
2037
2038
2039 #ifdef CONFIG_WPS_NFC
2040 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2041                                              int ndef, const char *uuid)
2042 {
2043         struct wpabuf *ret;
2044         u8 u[UUID_LEN], *use_uuid = NULL;
2045         u8 addr[ETH_ALEN], *use_addr = NULL;
2046
2047         if (!wpa_s->wps_er)
2048                 return NULL;
2049
2050         if (uuid_str2bin(uuid, u) == 0)
2051                 use_uuid = u;
2052         else if (hwaddr_aton(uuid, addr) == 0)
2053                 use_addr = addr;
2054         else
2055                 return NULL;
2056
2057         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2058         if (ndef && ret) {
2059                 struct wpabuf *tmp;
2060                 tmp = ndef_build_wifi(ret);
2061                 wpabuf_free(ret);
2062                 if (tmp == NULL)
2063                         return NULL;
2064                 ret = tmp;
2065         }
2066
2067         return ret;
2068 }
2069 #endif /* CONFIG_WPS_NFC */
2070
2071
2072 static int callbacks_pending = 0;
2073
2074 static void wpas_wps_terminate_cb(void *ctx)
2075 {
2076         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2077         if (--callbacks_pending <= 0)
2078                 eloop_terminate();
2079 }
2080 #endif /* CONFIG_WPS_ER */
2081
2082
2083 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2084 {
2085 #ifdef CONFIG_WPS_ER
2086         if (wpa_s->wps_er) {
2087                 callbacks_pending++;
2088                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2089                 wpa_s->wps_er = NULL;
2090                 return 1;
2091         }
2092 #endif /* CONFIG_WPS_ER */
2093         return 0;
2094 }
2095
2096
2097 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2098 {
2099         struct wps_context *wps = wpa_s->wps;
2100
2101         if (wps == NULL)
2102                 return;
2103
2104         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2105                 wps->config_methods = wps_config_methods_str2bin(
2106                         wpa_s->conf->config_methods);
2107                 if ((wps->config_methods &
2108                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2109                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2110                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2111                                    "config methods are not allowed at the "
2112                                    "same time");
2113                         wps->config_methods &= ~WPS_CONFIG_LABEL;
2114                 }
2115         }
2116         wps->config_methods = wps_fix_config_methods(wps->config_methods);
2117         wps->dev.config_methods = wps->config_methods;
2118
2119         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2120                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2121                           WPS_DEV_TYPE_LEN);
2122
2123         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2124                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2125                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2126                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2127         }
2128
2129         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2130                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2131
2132         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2133                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2134
2135         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2136                 wpas_wps_set_uuid(wpa_s, wps);
2137
2138         if (wpa_s->conf->changed_parameters &
2139             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2140                 /* Update pointers to make sure they refer current values */
2141                 wps->dev.device_name = wpa_s->conf->device_name;
2142                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2143                 wps->dev.model_name = wpa_s->conf->model_name;
2144                 wps->dev.model_number = wpa_s->conf->model_number;
2145                 wps->dev.serial_number = wpa_s->conf->serial_number;
2146         }
2147 }
2148
2149
2150 #ifdef CONFIG_WPS_NFC
2151
2152 #ifdef CONFIG_WPS_ER
2153 static struct wpabuf *
2154 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2155                               struct wpa_ssid *ssid)
2156 {
2157         struct wpabuf *ret;
2158         struct wps_credential cred;
2159
2160         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2161                 return NULL;
2162
2163         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2164
2165         if (ndef && ret) {
2166                 struct wpabuf *tmp;
2167                 tmp = ndef_build_wifi(ret);
2168                 wpabuf_free(ret);
2169                 if (tmp == NULL)
2170                         return NULL;
2171                 ret = tmp;
2172         }
2173
2174         return ret;
2175 }
2176 #endif /* CONFIG_WPS_ER */
2177
2178
2179 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2180                                           int ndef, const char *id_str)
2181 {
2182 #ifdef CONFIG_WPS_ER
2183         if (id_str) {
2184                 int id;
2185                 char *end = NULL;
2186                 struct wpa_ssid *ssid;
2187
2188                 id = strtol(id_str, &end, 10);
2189                 if (end && *end)
2190                         return NULL;
2191
2192                 ssid = wpa_config_get_network(wpa_s->conf, id);
2193                 if (ssid == NULL)
2194                         return NULL;
2195                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2196         }
2197 #endif /* CONFIG_WPS_ER */
2198 #ifdef CONFIG_AP
2199         if (wpa_s->ap_iface)
2200                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2201 #endif /* CONFIG_AP */
2202         return NULL;
2203 }
2204
2205
2206 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2207 {
2208         if (wpa_s->conf->wps_nfc_pw_from_config) {
2209                 return wps_nfc_token_build(ndef,
2210                                            wpa_s->conf->wps_nfc_dev_pw_id,
2211                                            wpa_s->conf->wps_nfc_dh_pubkey,
2212                                            wpa_s->conf->wps_nfc_dev_pw);
2213         }
2214
2215         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2216                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2217                                  &wpa_s->conf->wps_nfc_dh_privkey,
2218                                  &wpa_s->conf->wps_nfc_dev_pw);
2219 }
2220
2221
2222 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2223                        const u8 *bssid,
2224                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2225                        int p2p_group, const u8 *peer_pubkey_hash,
2226                        const u8 *ssid, size_t ssid_len, int freq)
2227 {
2228         struct wps_context *wps = wpa_s->wps;
2229         char pw[32 * 2 + 1];
2230
2231         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2232                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2233                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2234         }
2235
2236         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2237             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2238                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2239                            "cannot start NFC-triggered connection");
2240                 return -1;
2241         }
2242
2243         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2244                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2245                            "cannot start NFC-triggered connection", dev_pw_id);
2246                 return -1;
2247         }
2248
2249         dh5_free(wps->dh_ctx);
2250         wpabuf_free(wps->dh_pubkey);
2251         wpabuf_free(wps->dh_privkey);
2252         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2253         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2254         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2255                 wps->dh_ctx = NULL;
2256                 wpabuf_free(wps->dh_pubkey);
2257                 wps->dh_pubkey = NULL;
2258                 wpabuf_free(wps->dh_privkey);
2259                 wps->dh_privkey = NULL;
2260                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2261                 return -1;
2262         }
2263         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2264         if (wps->dh_ctx == NULL) {
2265                 wpabuf_free(wps->dh_pubkey);
2266                 wps->dh_pubkey = NULL;
2267                 wpabuf_free(wps->dh_privkey);
2268                 wps->dh_privkey = NULL;
2269                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2270                 return -1;
2271         }
2272
2273         if (dev_pw) {
2274                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2275                                            wpabuf_head(dev_pw),
2276                                            wpabuf_len(dev_pw));
2277         }
2278         return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2279                                      dev_pw ? pw : NULL,
2280                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2281                                      ssid, ssid_len, freq);
2282 }
2283
2284
2285 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2286                              struct wps_parse_attr *attr)
2287 {
2288         /*
2289          * Disable existing networks temporarily to allow the newly learned
2290          * credential to be preferred. Enable the temporarily disabled networks
2291          * after 10 seconds.
2292          */
2293         wpas_wps_temp_disable(wpa_s, NULL);
2294         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2295                                NULL);
2296
2297         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2298                 return -1;
2299
2300         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2301                 return 0;
2302
2303         if (attr->ap_channel) {
2304                 u16 chan = WPA_GET_BE16(attr->ap_channel);
2305                 int freq = 0;
2306
2307                 if (chan >= 1 && chan <= 13)
2308                         freq = 2407 + 5 * chan;
2309                 else if (chan == 14)
2310                         freq = 2484;
2311                 else if (chan >= 30)
2312                         freq = 5000 + 5 * chan;
2313
2314                 if (freq) {
2315                         wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2316                                    chan, freq);
2317                         wpa_s->after_wps = 5;
2318                         wpa_s->wps_freq = freq;
2319                 }
2320         }
2321
2322         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2323                    "based on the received credential added");
2324         wpa_s->normal_scans = 0;
2325         wpa_supplicant_reinit_autoscan(wpa_s);
2326         wpa_s->disconnected = 0;
2327         wpa_s->reassociate = 1;
2328
2329         wpa_supplicant_cancel_sched_scan(wpa_s);
2330         wpa_supplicant_req_scan(wpa_s, 0, 0);
2331
2332         return 0;
2333 }
2334
2335
2336 #ifdef CONFIG_WPS_ER
2337 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2338                                            struct wps_parse_attr *attr)
2339 {
2340         return wps_registrar_add_nfc_password_token(
2341                 wpa_s->wps->registrar, attr->oob_dev_password,
2342                 attr->oob_dev_password_len);
2343 }
2344 #endif /* CONFIG_WPS_ER */
2345
2346
2347 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2348                                     const struct wpabuf *wps)
2349 {
2350         struct wps_parse_attr attr;
2351
2352         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2353
2354         if (wps_parse_msg(wps, &attr)) {
2355                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2356                 return -1;
2357         }
2358
2359         if (attr.num_cred)
2360                 return wpas_wps_use_cred(wpa_s, &attr);
2361
2362 #ifdef CONFIG_WPS_ER
2363         if (attr.oob_dev_password)
2364                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2365 #endif /* CONFIG_WPS_ER */
2366
2367         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2368         return -1;
2369 }
2370
2371
2372 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2373                           const struct wpabuf *data, int forced_freq)
2374 {
2375         const struct wpabuf *wps = data;
2376         struct wpabuf *tmp = NULL;
2377         int ret;
2378
2379         if (wpabuf_len(data) < 4)
2380                 return -1;
2381
2382         if (*wpabuf_head_u8(data) != 0x10) {
2383                 /* Assume this contains full NDEF record */
2384                 tmp = ndef_parse_wifi(data);
2385                 if (tmp == NULL) {
2386 #ifdef CONFIG_P2P
2387                         tmp = ndef_parse_p2p(data);
2388                         if (tmp) {
2389                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2390                                                                forced_freq);
2391                                 wpabuf_free(tmp);
2392                                 return ret;
2393                         }
2394 #endif /* CONFIG_P2P */
2395                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2396                         return -1;
2397                 }
2398                 wps = tmp;
2399         }
2400
2401         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2402         wpabuf_free(tmp);
2403         return ret;
2404 }
2405
2406
2407 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2408                                           int ndef)
2409 {
2410         struct wpabuf *ret;
2411
2412         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2413             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2414                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2415                 return NULL;
2416
2417         ret = wps_build_nfc_handover_req(wpa_s->wps,
2418                                          wpa_s->conf->wps_nfc_dh_pubkey);
2419
2420         if (ndef && ret) {
2421                 struct wpabuf *tmp;
2422                 tmp = ndef_build_wifi(ret);
2423                 wpabuf_free(ret);
2424                 if (tmp == NULL)
2425                         return NULL;
2426                 ret = tmp;
2427         }
2428
2429         return ret;
2430 }
2431
2432
2433 #ifdef CONFIG_WPS_NFC
2434
2435 static struct wpabuf *
2436 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2437                              const char *uuid)
2438 {
2439 #ifdef CONFIG_WPS_ER
2440         struct wpabuf *ret;
2441         u8 u[UUID_LEN], *use_uuid = NULL;
2442         u8 addr[ETH_ALEN], *use_addr = NULL;
2443         struct wps_context *wps = wpa_s->wps;
2444
2445         if (wps == NULL)
2446                 return NULL;
2447
2448         if (uuid == NULL)
2449                 return NULL;
2450         if (uuid_str2bin(uuid, u) == 0)
2451                 use_uuid = u;
2452         else if (hwaddr_aton(uuid, addr) == 0)
2453                 use_addr = addr;
2454         else
2455                 return NULL;
2456
2457         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2458                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2459                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2460                         return NULL;
2461         }
2462
2463         wpas_wps_nfc_clear(wps);
2464         wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2465         wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2466         wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2467         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2468                 wpas_wps_nfc_clear(wps);
2469                 return NULL;
2470         }
2471
2472         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2473                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2474         if (ndef && ret) {
2475                 struct wpabuf *tmp;
2476                 tmp = ndef_build_wifi(ret);
2477                 wpabuf_free(ret);
2478                 if (tmp == NULL)
2479                         return NULL;
2480                 ret = tmp;
2481         }
2482
2483         return ret;
2484 #else /* CONFIG_WPS_ER */
2485         return NULL;
2486 #endif /* CONFIG_WPS_ER */
2487 }
2488 #endif /* CONFIG_WPS_NFC */
2489
2490
2491 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2492                                           int ndef, int cr, const char *uuid)
2493 {
2494         struct wpabuf *ret;
2495         if (!cr)
2496                 return NULL;
2497         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2498         if (ret)
2499                 return ret;
2500         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2501 }
2502
2503
2504 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2505                                         const struct wpabuf *data)
2506 {
2507         struct wpabuf *wps;
2508         int ret = -1;
2509         u16 wsc_len;
2510         const u8 *pos;
2511         struct wpabuf msg;
2512         struct wps_parse_attr attr;
2513         u16 dev_pw_id;
2514         const u8 *bssid = NULL;
2515         int freq = 0;
2516
2517         wps = ndef_parse_wifi(data);
2518         if (wps == NULL)
2519                 return -1;
2520         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2521                    "payload from NFC connection handover");
2522         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2523         if (wpabuf_len(wps) < 2) {
2524                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2525                            "Message");
2526                 goto out;
2527         }
2528         pos = wpabuf_head(wps);
2529         wsc_len = WPA_GET_BE16(pos);
2530         if (wsc_len > wpabuf_len(wps) - 2) {
2531                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2532                            "in Wi-Fi Handover Select Message", wsc_len);
2533                 goto out;
2534         }
2535         pos += 2;
2536
2537         wpa_hexdump(MSG_DEBUG,
2538                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2539                     pos, wsc_len);
2540         if (wsc_len < wpabuf_len(wps) - 2) {
2541                 wpa_hexdump(MSG_DEBUG,
2542                             "WPS: Ignore extra data after WSC attributes",
2543                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2544         }
2545
2546         wpabuf_set(&msg, pos, wsc_len);
2547         ret = wps_parse_msg(&msg, &attr);
2548         if (ret < 0) {
2549                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2550                            "Wi-Fi Handover Select Message");
2551                 goto out;
2552         }
2553
2554         if (attr.oob_dev_password == NULL ||
2555             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2556                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2557                            "included in Wi-Fi Handover Select Message");
2558                 ret = -1;
2559                 goto out;
2560         }
2561
2562         if (attr.ssid == NULL) {
2563                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2564                            "Select Message");
2565                 ret = -1;
2566                 goto out;
2567         }
2568
2569         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2570
2571         if (attr.mac_addr) {
2572                 bssid = attr.mac_addr;
2573                 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2574                            MAC2STR(bssid));
2575         }
2576
2577         if (attr.rf_bands)
2578                 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2579
2580         if (attr.ap_channel) {
2581                 u16 chan = WPA_GET_BE16(attr.ap_channel);
2582
2583                 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2584
2585                 if (chan >= 1 && chan <= 13 &&
2586                     (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2587                         freq = 2407 + 5 * chan;
2588                 else if (chan == 14 &&
2589                          (attr.rf_bands == NULL ||
2590                           *attr.rf_bands & WPS_RF_24GHZ))
2591                         freq = 2484;
2592                 else if (chan >= 30 &&
2593                          (attr.rf_bands == NULL ||
2594                           *attr.rf_bands & WPS_RF_50GHZ))
2595                         freq = 5000 + 5 * chan;
2596                 else if (chan >= 1 && chan <= 4 &&
2597                          (attr.rf_bands == NULL ||
2598                           *attr.rf_bands & WPS_RF_60GHZ))
2599                         freq = 56160 + 2160 * chan;
2600
2601                 if (freq) {
2602                         wpa_printf(MSG_DEBUG,
2603                                    "WPS: AP indicated channel %u -> %u MHz",
2604                                    chan, freq);
2605                 }
2606         }
2607
2608         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2609                     attr.oob_dev_password, attr.oob_dev_password_len);
2610         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2611                                  WPS_OOB_PUBKEY_HASH_LEN);
2612         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2613                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2614                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2615                 ret = -1;
2616                 goto out;
2617         }
2618         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2619                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2620
2621         ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2622                                  attr.oob_dev_password,
2623                                  attr.ssid, attr.ssid_len, freq);
2624
2625 out:
2626         wpabuf_free(wps);
2627         return ret;
2628 }
2629
2630
2631 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2632                                  const struct wpabuf *req,
2633                                  const struct wpabuf *sel)
2634 {
2635         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2636         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2637         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2638         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2639 }
2640
2641
2642 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2643                                     const struct wpabuf *req,
2644                                     const struct wpabuf *sel)
2645 {
2646         struct wpabuf *wps;
2647         int ret = -1;
2648         u16 wsc_len;
2649         const u8 *pos;
2650         struct wpabuf msg;
2651         struct wps_parse_attr attr;
2652         u16 dev_pw_id;
2653
2654         /*
2655          * Enrollee/station is always initiator of the NFC connection handover,
2656          * so use the request message here to find Enrollee public key hash.
2657          */
2658         wps = ndef_parse_wifi(req);
2659         if (wps == NULL)
2660                 return -1;
2661         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2662                    "payload from NFC connection handover");
2663         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2664         if (wpabuf_len(wps) < 2) {
2665                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2666                            "Message");
2667                 goto out;
2668         }
2669         pos = wpabuf_head(wps);
2670         wsc_len = WPA_GET_BE16(pos);
2671         if (wsc_len > wpabuf_len(wps) - 2) {
2672                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2673                            "in rt Wi-Fi Handover Request Message", wsc_len);
2674                 goto out;
2675         }
2676         pos += 2;
2677
2678         wpa_hexdump(MSG_DEBUG,
2679                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2680                     pos, wsc_len);
2681         if (wsc_len < wpabuf_len(wps) - 2) {
2682                 wpa_hexdump(MSG_DEBUG,
2683                             "WPS: Ignore extra data after WSC attributes",
2684                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2685         }
2686
2687         wpabuf_set(&msg, pos, wsc_len);
2688         ret = wps_parse_msg(&msg, &attr);
2689         if (ret < 0) {
2690                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2691                            "Wi-Fi Handover Request Message");
2692                 goto out;
2693         }
2694
2695         if (attr.oob_dev_password == NULL ||
2696             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2697                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2698                            "included in Wi-Fi Handover Request Message");
2699                 ret = -1;
2700                 goto out;
2701         }
2702
2703         if (attr.uuid_e == NULL) {
2704                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2705                            "Handover Request Message");
2706                 ret = -1;
2707                 goto out;
2708         }
2709
2710         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2711
2712         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2713                     attr.oob_dev_password, attr.oob_dev_password_len);
2714         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2715                                  WPS_OOB_PUBKEY_HASH_LEN);
2716         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2717                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2718                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2719                 ret = -1;
2720                 goto out;
2721         }
2722         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2723                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2724
2725         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2726                                              attr.oob_dev_password,
2727                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2728                                              NULL, 0, 1);
2729
2730 out:
2731         wpabuf_free(wps);
2732         return ret;
2733 }
2734
2735 #endif /* CONFIG_WPS_NFC */
2736
2737
2738 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2739 {
2740         size_t i;
2741         struct os_reltime now;
2742
2743         if (wpa_debug_level > MSG_DEBUG)
2744                 return;
2745
2746         if (wpa_s->wps_ap == NULL)
2747                 return;
2748
2749         os_get_reltime(&now);
2750
2751         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2752                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2753                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2754
2755                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2756                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2757                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2758                            ap->last_attempt.sec > 0 ?
2759                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2760                            e ? e->count : 0);
2761         }
2762 }
2763
2764
2765 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2766                                                  const u8 *bssid)
2767 {
2768         size_t i;
2769
2770         if (wpa_s->wps_ap == NULL)
2771                 return NULL;
2772
2773         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2774                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2775                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2776                         return ap;
2777         }
2778
2779         return NULL;
2780 }
2781
2782
2783 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2784                                         struct wpa_scan_res *res)
2785 {
2786         struct wpabuf *wps;
2787         enum wps_ap_info_type type;
2788         struct wps_ap_info *ap;
2789         int r, pbc_active;
2790         const u8 *uuid;
2791
2792         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2793                 return;
2794
2795         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2796         if (wps == NULL)
2797                 return;
2798
2799         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2800         if (r == 2)
2801                 type = WPS_AP_SEL_REG_OUR;
2802         else if (r == 1)
2803                 type = WPS_AP_SEL_REG;
2804         else
2805                 type = WPS_AP_NOT_SEL_REG;
2806
2807         uuid = wps_get_uuid_e(wps);
2808         pbc_active = wps_is_selected_pbc_registrar(wps);
2809
2810         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2811         if (ap) {
2812                 if (ap->type != type) {
2813                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2814                                    " changed type %d -> %d",
2815                                    MAC2STR(res->bssid), ap->type, type);
2816                         ap->type = type;
2817                         if (type != WPS_AP_NOT_SEL_REG)
2818                                 wpa_blacklist_del(wpa_s, ap->bssid);
2819                 }
2820                 ap->pbc_active = pbc_active;
2821                 if (uuid)
2822                         os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2823                 goto out;
2824         }
2825
2826         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2827                               sizeof(struct wps_ap_info));
2828         if (ap == NULL)
2829                 goto out;
2830
2831         wpa_s->wps_ap = ap;
2832         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2833         wpa_s->num_wps_ap++;
2834
2835         os_memset(ap, 0, sizeof(*ap));
2836         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2837         ap->type = type;
2838         ap->pbc_active = pbc_active;
2839         if (uuid)
2840                 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2841         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2842                    MAC2STR(ap->bssid), ap->type);
2843
2844 out:
2845         wpabuf_free(wps);
2846 }
2847
2848
2849 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2850                              struct wpa_scan_results *scan_res)
2851 {
2852         size_t i;
2853
2854         for (i = 0; i < scan_res->num; i++)
2855                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2856
2857         wpas_wps_dump_ap_info(wpa_s);
2858 }
2859
2860
2861 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2862 {
2863         struct wps_ap_info *ap;
2864
2865         wpa_s->after_wps = 0;
2866
2867         if (!wpa_s->wps_ap_iter)
2868                 return;
2869         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2870         if (ap == NULL)
2871                 return;
2872         ap->tries++;
2873         os_get_reltime(&ap->last_attempt);
2874 }