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