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