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