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         if (cred->ap_channel)
 493                 wpa_s->wps_ap_channel = cred->ap_channel;
 494
 495         wpas_wps_remove_dup_network(wpa_s, ssid);
 496
 497 #ifndef CONFIG_NO_CONFIG_WRITE
 498         if (wpa_s->conf->update_config &&
 499             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 500                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 501                 return -1;
 502         }
 503 #endif /* CONFIG_NO_CONFIG_WRITE */
 504
 505         /*
 506          * Optimize the post-WPS scan based on the channel used during
 507          * the provisioning in case EAP-Failure is not received.
 508          */
 509         wpa_s->after_wps = 5;
 510         wpa_s->wps_freq = wpa_s->assoc_freq;
 511
 512         return 0;
 513 }
 514
 515
 516 #ifdef CONFIG_P2P
 517 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 518 {
 519         struct wpa_supplicant *wpa_s = eloop_ctx;
 520         wpas_p2p_notif_pbc_overlap(wpa_s);
 521 }
 522 #endif /* CONFIG_P2P */
 523
 524
 525 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 526                                          struct wps_event_m2d *m2d)
 527 {
 528         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 529                 "dev_password_id=%d config_error=%d",
 530                 m2d->dev_password_id, m2d->config_error);
 531         wpas_notify_wps_event_m2d(wpa_s, m2d);
 532 #ifdef CONFIG_P2P
 533         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 534                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 535                         "dev_password_id=%d config_error=%d",
 536                         m2d->dev_password_id, m2d->config_error);
 537         }
 538         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 539                 /*
 540                  * Notify P2P from eloop timeout to avoid issues with the
 541                  * interface getting removed while processing a message.
 542                  */
 543                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 544                                        NULL);
 545         }
 546 #endif /* CONFIG_P2P */
 547 }
 548
 549
 550 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 551 {
 552         struct wpa_supplicant *wpa_s = eloop_ctx;
 553         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 554         wpas_clear_wps(wpa_s);
 555 }
 556
 557
 558 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 559                                           struct wps_event_fail *fail)
 560 {
 561         if (fail->error_indication > 0 &&
 562             fail->error_indication < NUM_WPS_EI_VALUES) {
 563                 wpa_msg(wpa_s, MSG_INFO,
 564                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 565                         fail->msg, fail->config_error, fail->error_indication,
 566                         wps_ei_str(fail->error_indication));
 567                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 568                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 569                                 "msg=%d config_error=%d reason=%d (%s)",
 570                                 fail->msg, fail->config_error,
 571                                 fail->error_indication,
 572                                 wps_ei_str(fail->error_indication));
 573         } else {
 574                 wpa_msg(wpa_s, MSG_INFO,
 575                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 576                         fail->msg, fail->config_error);
 577                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 578                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 579                                 "msg=%d config_error=%d",
 580                                 fail->msg, fail->config_error);
 581         }
 582
 583         /*
 584          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 585          */
 586         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 587         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 588         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 589
 590         wpas_notify_wps_event_fail(wpa_s, fail);
 591 #ifdef CONFIG_P2P
 592         wpas_p2p_wps_failed(wpa_s, fail);
 593 #endif /* CONFIG_P2P */
 594 }
 595
 596
 597 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 598
 599 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 600 {
 601         struct wpa_ssid *ssid;
 602         int changed = 0;
 603
 604         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 605
 606         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 607                 if (ssid->disabled_for_connect && ssid->disabled) {
 608                         ssid->disabled_for_connect = 0;
 609                         ssid->disabled = 0;
 610                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 611                         changed++;
 612                 }
 613         }
 614
 615         if (changed) {
 616 #ifndef CONFIG_NO_CONFIG_WRITE
 617                 if (wpa_s->conf->update_config &&
 618                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 619                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 620                                    "configuration");
 621                 }
 622 #endif /* CONFIG_NO_CONFIG_WRITE */
 623         }
 624 }
 625
 626
 627 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 628 {
 629         struct wpa_supplicant *wpa_s = eloop_ctx;
 630         /* Enable the networks disabled during wpas_wps_reassoc */
 631         wpas_wps_reenable_networks(wpa_s);
 632 }
 633
 634
 635 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 636 {
 637         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 638         wpa_s->wps_success = 1;
 639         wpas_notify_wps_event_success(wpa_s);
 640         if (wpa_s->current_ssid)
 641                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 642         wpa_s->extra_blacklist_count = 0;
 643
 644         /*
 645          * Enable the networks disabled during wpas_wps_reassoc after 10
 646          * seconds. The 10 seconds timer is to allow the data connection to be
 647          * formed before allowing other networks to be selected.
 648          */
 649         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 650                                NULL);
 651
 652 #ifdef CONFIG_P2P
 653         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 654 #endif /* CONFIG_P2P */
 655 }
 656
 657
 658 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 659                                                struct wps_event_er_ap *ap)
 660 {
 661         char uuid_str[100];
 662         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 663
 664         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 665         if (ap->pri_dev_type)
 666                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 667                                      sizeof(dev_type));
 668         else
 669                 dev_type[0] = '\0';
 670
 671         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 672                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 673                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 674                 ap->friendly_name ? ap->friendly_name : "",
 675                 ap->manufacturer ? ap->manufacturer : "",
 676                 ap->model_description ? ap->model_description : "",
 677                 ap->model_name ? ap->model_name : "",
 678                 ap->manufacturer_url ? ap->manufacturer_url : "",
 679                 ap->model_url ? ap->model_url : "");
 680 }
 681
 682
 683 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 684                                                   struct wps_event_er_ap *ap)
 685 {
 686         char uuid_str[100];
 687         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 688         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 689 }
 690
 691
 692 static void wpa_supplicant_wps_event_er_enrollee_add(
 693         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 694 {
 695         char uuid_str[100];
 696         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 697
 698         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 699         if (enrollee->pri_dev_type)
 700                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 701                                      sizeof(dev_type));
 702         else
 703                 dev_type[0] = '\0';
 704
 705         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 706                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 707                 "|%s|%s|%s|%s|%s|",
 708                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 709                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 710                 enrollee->dev_name ? enrollee->dev_name : "",
 711                 enrollee->manufacturer ? enrollee->manufacturer : "",
 712                 enrollee->model_name ? enrollee->model_name : "",
 713                 enrollee->model_number ? enrollee->model_number : "",
 714                 enrollee->serial_number ? enrollee->serial_number : "");
 715 }
 716
 717
 718 static void wpa_supplicant_wps_event_er_enrollee_remove(
 719         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 720 {
 721         char uuid_str[100];
 722         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 723         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 724                 uuid_str, MAC2STR(enrollee->mac_addr));
 725 }
 726
 727
 728 static void wpa_supplicant_wps_event_er_ap_settings(
 729         struct wpa_supplicant *wpa_s,
 730         struct wps_event_er_ap_settings *ap_settings)
 731 {
 732         char uuid_str[100];
 733         char key_str[65];
 734         const struct wps_credential *cred = ap_settings->cred;
 735
 736         key_str[0] = '\0';
 737         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 738                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 739                         os_memcpy(key_str, cred->key, cred->key_len);
 740                         key_str[cred->key_len] = '\0';
 741                 }
 742         }
 743
 744         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 745         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 746         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 747                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 748                      "key=%s",
 749                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 750                      cred->auth_type, cred->encr_type, key_str);
 751 }
 752
 753
 754 static void wpa_supplicant_wps_event_er_set_sel_reg(
 755         struct wpa_supplicant *wpa_s,
 756         struct wps_event_er_set_selected_registrar *ev)
 757 {
 758         char uuid_str[100];
 759
 760         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 761         switch (ev->state) {
 762         case WPS_ER_SET_SEL_REG_START:
 763                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 764                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 765                         "sel_reg_config_methods=0x%x",
 766                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 767                         ev->sel_reg_config_methods);
 768                 break;
 769         case WPS_ER_SET_SEL_REG_DONE:
 770                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 771                         "uuid=%s state=DONE", uuid_str);
 772                 break;
 773         case WPS_ER_SET_SEL_REG_FAILED:
 774                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 775                         "uuid=%s state=FAILED", uuid_str);
 776                 break;
 777         }
 778 }
 779
 780
 781 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 782                                      union wps_event_data *data)
 783 {
 784         struct wpa_supplicant *wpa_s = ctx;
 785         switch (event) {
 786         case WPS_EV_M2D:
 787                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 788                 break;
 789         case WPS_EV_FAIL:
 790                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 791                 break;
 792         case WPS_EV_SUCCESS:
 793                 wpa_supplicant_wps_event_success(wpa_s);
 794                 break;
 795         case WPS_EV_PWD_AUTH_FAIL:
 796 #ifdef CONFIG_AP
 797                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 798                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 799 #endif /* CONFIG_AP */
 800                 break;
 801         case WPS_EV_PBC_OVERLAP:
 802                 break;
 803         case WPS_EV_PBC_TIMEOUT:
 804                 break;
 805         case WPS_EV_PBC_ACTIVE:
 806                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 807                 break;
 808         case WPS_EV_PBC_DISABLE:
 809                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 810                 break;
 811         case WPS_EV_ER_AP_ADD:
 812                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 813                 break;
 814         case WPS_EV_ER_AP_REMOVE:
 815                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 816                 break;
 817         case WPS_EV_ER_ENROLLEE_ADD:
 818                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 819                                                          &data->enrollee);
 820                 break;
 821         case WPS_EV_ER_ENROLLEE_REMOVE:
 822                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 823                                                             &data->enrollee);
 824                 break;
 825         case WPS_EV_ER_AP_SETTINGS:
 826                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 827                                                         &data->ap_settings);
 828                 break;
 829         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 830                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 831                                                         &data->set_sel_reg);
 832                 break;
 833         case WPS_EV_AP_PIN_SUCCESS:
 834                 break;
 835         }
 836 }
 837
 838
 839 static int wpa_supplicant_wps_rf_band(void *ctx)
 840 {
 841         struct wpa_supplicant *wpa_s = ctx;
 842
 843         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 844                 return 0;
 845
 846         return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 847 }
 848
 849
 850 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 851 {
 852         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 853             eap_is_wps_pin_enrollee(&ssid->eap))
 854                 return WPS_REQ_ENROLLEE;
 855         else
 856                 return WPS_REQ_REGISTRAR;
 857 }
 858
 859
 860 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 861 {
 862         int id;
 863         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 864
 865         wpa_s->after_wps = 0;
 866         wpa_s->known_wps_freq = 0;
 867
 868         prev_current = wpa_s->current_ssid;
 869
 870         /* Enable the networks disabled during wpas_wps_reassoc */
 871         wpas_wps_reenable_networks(wpa_s);
 872
 873         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 874         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 875
 876         /* Remove any existing WPS network from configuration */
 877         ssid = wpa_s->conf->ssid;
 878         while (ssid) {
 879                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 880                         if (ssid == wpa_s->current_ssid) {
 881                                 wpa_supplicant_deauthenticate(
 882                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 883                         }
 884                         id = ssid->id;
 885                         remove_ssid = ssid;
 886                 } else
 887                         id = -1;
 888                 ssid = ssid->next;
 889                 if (id >= 0) {
 890                         if (prev_current == remove_ssid) {
 891                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 892                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 893                                                        NULL);
 894                         }
 895                         wpas_notify_network_removed(wpa_s, remove_ssid);
 896                         wpa_config_remove_network(wpa_s->conf, id);
 897                 }
 898         }
 899
 900         wpas_wps_clear_ap_info(wpa_s);
 901 }
 902
 903
 904 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 905 {
 906         struct wpa_supplicant *wpa_s = eloop_ctx;
 907         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 908                 "out");
 909         wpas_clear_wps(wpa_s);
 910 }
 911
 912
 913 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 914                                               int registrar, const u8 *bssid)
 915 {
 916         struct wpa_ssid *ssid;
 917
 918         ssid = wpa_config_add_network(wpa_s->conf);
 919         if (ssid == NULL)
 920                 return NULL;
 921         wpas_notify_network_added(wpa_s, ssid);
 922         wpa_config_set_network_defaults(ssid);
 923         ssid->temporary = 1;
 924         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 925             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 926             wpa_config_set(ssid, "identity", registrar ?
 927                            "\"" WSC_ID_REGISTRAR "\"" :
 928                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 929                 wpas_notify_network_removed(wpa_s, ssid);
 930                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 931                 return NULL;
 932         }
 933
 934         if (bssid) {
 935 #ifndef CONFIG_P2P
 936                 struct wpa_bss *bss;
 937                 int count = 0;
 938 #endif /* CONFIG_P2P */
 939
 940                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 941                 ssid->bssid_set = 1;
 942
 943                 /*
 944                  * Note: With P2P, the SSID may change at the time the WPS
 945                  * provisioning is started, so better not filter the AP based
 946                  * on the current SSID in the scan results.
 947                  */
 948 #ifndef CONFIG_P2P
 949                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 950                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 951                                 continue;
 952
 953                         os_free(ssid->ssid);
 954                         ssid->ssid = os_malloc(bss->ssid_len);
 955                         if (ssid->ssid == NULL)
 956                                 break;
 957                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 958                         ssid->ssid_len = bss->ssid_len;
 959                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 960                                           "scan results",
 961                                           ssid->ssid, ssid->ssid_len);
 962                         count++;
 963                 }
 964
 965                 if (count > 1) {
 966                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 967                                    "for the AP; use wildcard");
 968                         os_free(ssid->ssid);
 969                         ssid->ssid = NULL;
 970                         ssid->ssid_len = 0;
 971                 }
 972 #endif /* CONFIG_P2P */
 973         }
 974
 975         return ssid;
 976 }
 977
 978
 979 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 980                                   struct wpa_ssid *selected)
 981 {
 982         struct wpa_ssid *ssid;
 983
 984         if (wpa_s->current_ssid)
 985                 wpa_supplicant_deauthenticate(
 986                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 987
 988         /* Mark all other networks disabled and trigger reassociation */
 989         ssid = wpa_s->conf->ssid;
 990         while (ssid) {
 991                 int was_disabled = ssid->disabled;
 992                 ssid->disabled_for_connect = 0;
 993                 /*
 994                  * In case the network object corresponds to a persistent group
 995                  * then do not send out network disabled signal. In addition,
 996                  * do not change disabled status of persistent network objects
 997                  * from 2 to 1 should we connect to another network.
 998                  */
 999                 if (was_disabled != 2) {
1000                         ssid->disabled = ssid != selected;
1001                         if (was_disabled != ssid->disabled) {
1002                                 if (ssid->disabled)
1003                                         ssid->disabled_for_connect = 1;
1004                                 wpas_notify_network_enabled_changed(wpa_s,
1005                                                                     ssid);
1006                         }
1007                 }
1008                 ssid = ssid->next;
1009         }
1010 }
1011
1012
1013 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1014                              struct wpa_ssid *selected, const u8 *bssid)
1015 {
1016         struct wpa_bss *bss;
1017
1018         wpa_s->after_wps = 0;
1019         wpa_s->known_wps_freq = 0;
1020         if (bssid) {
1021                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1022                 if (bss && bss->freq > 0) {
1023                         wpa_s->known_wps_freq = 1;
1024                         wpa_s->wps_freq = bss->freq;
1025                 }
1026         }
1027
1028         wpas_wps_temp_disable(wpa_s, selected);
1029
1030         wpa_s->disconnected = 0;
1031         wpa_s->reassociate = 1;
1032         wpa_s->scan_runs = 0;
1033         wpa_s->normal_scans = 0;
1034         wpa_s->wps_success = 0;
1035         wpa_s->blacklist_cleared = 0;
1036
1037         wpa_supplicant_cancel_sched_scan(wpa_s);
1038         wpa_supplicant_req_scan(wpa_s, 0, 0);
1039 }
1040
1041
1042 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1043                        int p2p_group)
1044 {
1045         struct wpa_ssid *ssid;
1046         wpas_clear_wps(wpa_s);
1047         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1048         if (ssid == NULL)
1049                 return -1;
1050         ssid->temporary = 1;
1051         ssid->p2p_group = p2p_group;
1052 #ifdef CONFIG_P2P
1053         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1054                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1055                 if (ssid->ssid) {
1056                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1057                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1058                                   ssid->ssid_len);
1059                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1060                                           "SSID", ssid->ssid, ssid->ssid_len);
1061                 }
1062         }
1063 #endif /* CONFIG_P2P */
1064         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1065                 return -1;
1066         if (wpa_s->wps_fragment_size)
1067                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1068         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1069                                wpa_s, NULL);
1070         wpas_wps_reassoc(wpa_s, ssid, bssid);
1071         return 0;
1072 }
1073
1074
1075 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, const u8 *bssid,
1076                                  const char *pin, int p2p_group, u16 dev_pw_id,
1077                                  const u8 *peer_pubkey_hash)
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         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1086         if (ssid == NULL)
1087                 return -1;
1088         ssid->temporary = 1;
1089         ssid->p2p_group = p2p_group;
1090         if (peer_pubkey_hash) {
1091                 os_memcpy(hash, " pkhash=", 8);
1092                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1093                                            peer_pubkey_hash,
1094                                            WPS_OOB_PUBKEY_HASH_LEN);
1095         } else {
1096                 hash[0] = '\0';
1097         }
1098 #ifdef CONFIG_P2P
1099         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1100                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1101                 if (ssid->ssid) {
1102                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1103                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1104                                   ssid->ssid_len);
1105                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1106                                           "SSID", ssid->ssid, ssid->ssid_len);
1107                 }
1108         }
1109 #endif /* CONFIG_P2P */
1110         if (pin)
1111                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1112                             pin, dev_pw_id, hash);
1113         else {
1114                 rpin = wps_generate_pin();
1115                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1116                             rpin, dev_pw_id, hash);
1117         }
1118         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1119                 return -1;
1120         if (wpa_s->wps_fragment_size)
1121                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1122         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1123                                wpa_s, NULL);
1124         wpa_s->wps_ap_iter = 1;
1125         wpas_wps_reassoc(wpa_s, ssid, bssid);
1126         return rpin;
1127 }
1128
1129
1130 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1131                        const char *pin, int p2p_group, u16 dev_pw_id)
1132 {
1133         return wpas_wps_start_dev_pw(wpa_s, bssid, pin, p2p_group, dev_pw_id,
1134                                      NULL);
1135 }
1136
1137
1138 /* Cancel the wps pbc/pin requests */
1139 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1140 {
1141 #ifdef CONFIG_AP
1142         if (wpa_s->ap_iface) {
1143                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1144                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1145         }
1146 #endif /* CONFIG_AP */
1147
1148         if (wpa_s->wpa_state == WPA_SCANNING ||
1149             wpa_s->wpa_state == WPA_DISCONNECTED) {
1150                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1151                 wpa_supplicant_cancel_scan(wpa_s);
1152                 wpas_clear_wps(wpa_s);
1153         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1154                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1155                            "deauthenticate");
1156                 wpa_supplicant_deauthenticate(wpa_s,
1157                                               WLAN_REASON_DEAUTH_LEAVING);
1158                 wpas_clear_wps(wpa_s);
1159         } else {
1160                 wpas_wps_reenable_networks(wpa_s);
1161                 wpas_wps_clear_ap_info(wpa_s);
1162                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1163                     0)
1164                         wpas_clear_wps(wpa_s);
1165         }
1166
1167         wpa_s->after_wps = 0;
1168
1169         return 0;
1170 }
1171
1172
1173 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1174                        const char *pin, struct wps_new_ap_settings *settings)
1175 {
1176         struct wpa_ssid *ssid;
1177         char val[200];
1178         char *pos, *end;
1179         int res;
1180
1181         if (!pin)
1182                 return -1;
1183         wpas_clear_wps(wpa_s);
1184         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1185         if (ssid == NULL)
1186                 return -1;
1187         ssid->temporary = 1;
1188         pos = val;
1189         end = pos + sizeof(val);
1190         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1191         if (res < 0 || res >= end - pos)
1192                 return -1;
1193         pos += res;
1194         if (settings) {
1195                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1196                                   "new_encr=%s new_key=%s",
1197                                   settings->ssid_hex, settings->auth,
1198                                   settings->encr, settings->key_hex);
1199                 if (res < 0 || res >= end - pos)
1200                         return -1;
1201                 pos += res;
1202         }
1203         res = os_snprintf(pos, end - pos, "\"");
1204         if (res < 0 || res >= end - pos)
1205                 return -1;
1206         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1207                 return -1;
1208         if (wpa_s->wps_fragment_size)
1209                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1210         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1211                                wpa_s, NULL);
1212         wpas_wps_reassoc(wpa_s, ssid, bssid);
1213         return 0;
1214 }
1215
1216
1217 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1218                                const u8 *p2p_dev_addr, const u8 *psk,
1219                                size_t psk_len)
1220 {
1221         if (is_zero_ether_addr(p2p_dev_addr)) {
1222                 wpa_printf(MSG_DEBUG,
1223                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1224                            MAC2STR(mac_addr));
1225         } else {
1226                 wpa_printf(MSG_DEBUG,
1227                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1228                            " P2P Device Addr " MACSTR,
1229                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1230         }
1231         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1232
1233         /* TODO */
1234
1235         return 0;
1236 }
1237
1238
1239 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1240                                    const struct wps_device_data *dev)
1241 {
1242         char uuid[40], txt[400];
1243         int len;
1244         char devtype[WPS_DEV_TYPE_BUFSIZE];
1245         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1246                 return;
1247         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1248         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1249                           " [%s|%s|%s|%s|%s|%s]",
1250                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1251                           dev->manufacturer, dev->model_name,
1252                           dev->model_number, dev->serial_number,
1253                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1254                                                sizeof(devtype)));
1255         if (len > 0 && len < (int) sizeof(txt))
1256                 wpa_printf(MSG_INFO, "%s", txt);
1257 }
1258
1259
1260 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1261                                     u16 sel_reg_config_methods)
1262 {
1263 #ifdef CONFIG_WPS_ER
1264         struct wpa_supplicant *wpa_s = ctx;
1265
1266         if (wpa_s->wps_er == NULL)
1267                 return;
1268         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1269                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1270                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1271         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1272                            sel_reg_config_methods);
1273 #endif /* CONFIG_WPS_ER */
1274 }
1275
1276
1277 static u16 wps_fix_config_methods(u16 config_methods)
1278 {
1279 #ifdef CONFIG_WPS2
1280         if ((config_methods &
1281              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1282               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1283                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1284                            "virtual_display for WPS 2.0 compliance");
1285                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1286         }
1287         if ((config_methods &
1288              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1289               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1290                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1291                            "virtual_push_button for WPS 2.0 compliance");
1292                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1293         }
1294 #endif /* CONFIG_WPS2 */
1295
1296         return config_methods;
1297 }
1298
1299
1300 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1301                               struct wps_context *wps)
1302 {
1303         char buf[50];
1304         const char *src;
1305
1306         if (is_nil_uuid(wpa_s->conf->uuid)) {
1307                 struct wpa_supplicant *first;
1308                 first = wpa_s->global->ifaces;
1309                 while (first && first->next)
1310                         first = first->next;
1311                 if (first && first != wpa_s) {
1312                         if (wps != wpa_s->global->ifaces->wps)
1313                                 os_memcpy(wps->uuid,
1314                                           wpa_s->global->ifaces->wps->uuid,
1315                                           WPS_UUID_LEN);
1316                         src = "from the first interface";
1317                 } else {
1318                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1319                         src = "based on MAC address";
1320                 }
1321         } else {
1322                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1323                 src = "based on configuration";
1324         }
1325
1326         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1327         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1328 }
1329
1330
1331 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1332                                        struct wps_context *wps)
1333 {
1334         wpabuf_free(wps->dev.vendor_ext_m1);
1335         wps->dev.vendor_ext_m1 = NULL;
1336
1337         if (wpa_s->conf->wps_vendor_ext_m1) {
1338                 wps->dev.vendor_ext_m1 =
1339                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1340                 if (!wps->dev.vendor_ext_m1) {
1341                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1342                                    "allocate memory for vendor_ext_m1");
1343                 }
1344         }
1345 }
1346
1347
1348 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1349 {
1350         struct wps_context *wps;
1351         struct wps_registrar_config rcfg;
1352         struct hostapd_hw_modes *modes;
1353         u16 m;
1354
1355         wps = os_zalloc(sizeof(*wps));
1356         if (wps == NULL)
1357                 return -1;
1358
1359         wps->cred_cb = wpa_supplicant_wps_cred;
1360         wps->event_cb = wpa_supplicant_wps_event;
1361         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1362         wps->cb_ctx = wpa_s;
1363
1364         wps->dev.device_name = wpa_s->conf->device_name;
1365         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1366         wps->dev.model_name = wpa_s->conf->model_name;
1367         wps->dev.model_number = wpa_s->conf->model_number;
1368         wps->dev.serial_number = wpa_s->conf->serial_number;
1369         wps->config_methods =
1370                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1371         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1372             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1373                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1374                            "methods are not allowed at the same time");
1375                 os_free(wps);
1376                 return -1;
1377         }
1378         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1379         wps->dev.config_methods = wps->config_methods;
1380         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1381                   WPS_DEV_TYPE_LEN);
1382
1383         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1384         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1385                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1386
1387         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1388
1389         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1390         modes = wpa_s->hw.modes;
1391         if (modes) {
1392                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1393                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1394                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1395                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1396                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1397                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1398                 }
1399         }
1400         if (wps->dev.rf_bands == 0) {
1401                 /*
1402                  * Default to claiming support for both bands if the driver
1403                  * does not provide support for fetching supported bands.
1404                  */
1405                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1406         }
1407         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1408         wpas_wps_set_uuid(wpa_s, wps);
1409
1410         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1411         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1412
1413         os_memset(&rcfg, 0, sizeof(rcfg));
1414         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1415         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1416         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1417         rcfg.cb_ctx = wpa_s;
1418
1419         wps->registrar = wps_registrar_init(wps, &rcfg);
1420         if (wps->registrar == NULL) {
1421                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1422                 os_free(wps);
1423                 return -1;
1424         }
1425
1426         wpa_s->wps = wps;
1427
1428         return 0;
1429 }
1430
1431
1432 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1433 {
1434         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1435         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1436         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1437         wpas_wps_clear_ap_info(wpa_s);
1438
1439         if (wpa_s->wps == NULL)
1440                 return;
1441
1442 #ifdef CONFIG_WPS_ER
1443         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1444         wpa_s->wps_er = NULL;
1445 #endif /* CONFIG_WPS_ER */
1446
1447         wps_registrar_deinit(wpa_s->wps->registrar);
1448         wpabuf_free(wpa_s->wps->dh_pubkey);
1449         wpabuf_free(wpa_s->wps->dh_privkey);
1450         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1451         os_free(wpa_s->wps->network_key);
1452         os_free(wpa_s->wps);
1453         wpa_s->wps = NULL;
1454 }
1455
1456
1457 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1458                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1459 {
1460         struct wpabuf *wps_ie;
1461
1462         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1463                 return -1;
1464
1465         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1466         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1467                 if (!wps_ie) {
1468                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1469                         return 0;
1470                 }
1471
1472                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1473                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1474                                    "without active PBC Registrar");
1475                         wpabuf_free(wps_ie);
1476                         return 0;
1477                 }
1478
1479                 /* TODO: overlap detection */
1480                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1481                            "(Active PBC)");
1482                 wpabuf_free(wps_ie);
1483                 return 1;
1484         }
1485
1486         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1487                 if (!wps_ie) {
1488                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1489                         return 0;
1490                 }
1491
1492                 /*
1493                  * Start with WPS APs that advertise our address as an
1494                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1495                  * allow any WPS AP after couple of scans since some APs do not
1496                  * set Selected Registrar attribute properly when using
1497                  * external Registrar.
1498                  */
1499                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1500                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1501                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1502                                            "without active PIN Registrar");
1503                                 wpabuf_free(wps_ie);
1504                                 return 0;
1505                         }
1506                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1507                 } else {
1508                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1509                                    "(Authorized MAC or Active PIN)");
1510                 }
1511                 wpabuf_free(wps_ie);
1512                 return 1;
1513         }
1514
1515         if (wps_ie) {
1516                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1517                 wpabuf_free(wps_ie);
1518                 return 1;
1519         }
1520
1521         return -1;
1522 }
1523
1524
1525 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1526                               struct wpa_ssid *ssid,
1527                               struct wpa_bss *bss)
1528 {
1529         struct wpabuf *wps_ie = NULL;
1530         int ret = 0;
1531
1532         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1533                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1534                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1535                         /* allow wildcard SSID for WPS PBC */
1536                         ret = 1;
1537                 }
1538         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1539                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1540                 if (wps_ie &&
1541                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1542                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1543                         /* allow wildcard SSID for WPS PIN */
1544                         ret = 1;
1545                 }
1546         }
1547
1548         if (!ret && ssid->bssid_set &&
1549             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1550                 /* allow wildcard SSID due to hardcoded BSSID match */
1551                 ret = 1;
1552         }
1553
1554 #ifdef CONFIG_WPS_STRICT
1555         if (wps_ie) {
1556                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1557                                                    0, bss->bssid) < 0)
1558                         ret = 0;
1559                 if (bss->beacon_ie_len) {
1560                         struct wpabuf *bcn_wps;
1561                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1562                                 bss, WPS_IE_VENDOR_TYPE);
1563                         if (bcn_wps == NULL) {
1564                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1565                                            "missing from AP Beacon");
1566                                 ret = 0;
1567                         } else {
1568                                 if (wps_validate_beacon(wps_ie) < 0)
1569                                         ret = 0;
1570                                 wpabuf_free(bcn_wps);
1571                         }
1572                 }
1573         }
1574 #endif /* CONFIG_WPS_STRICT */
1575
1576         wpabuf_free(wps_ie);
1577
1578         return ret;
1579 }
1580
1581
1582 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1583                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1584 {
1585         const u8 *sel_uuid, *uuid;
1586         struct wpabuf *wps_ie;
1587         int ret = 0;
1588         struct wpa_bss *bss;
1589
1590         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1591                 return 0;
1592
1593         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1594                    "present in scan results; selected BSSID " MACSTR,
1595                    MAC2STR(selected->bssid));
1596
1597         /* Make sure that only one AP is in active PBC mode */
1598         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1599         if (wps_ie) {
1600                 sel_uuid = wps_get_uuid_e(wps_ie);
1601                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1602                             sel_uuid, UUID_LEN);
1603         } else {
1604                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1605                            "WPS IE?!");
1606                 sel_uuid = NULL;
1607         }
1608
1609         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1610                 struct wpabuf *ie;
1611                 if (bss == selected)
1612                         continue;
1613                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1614                 if (!ie)
1615                         continue;
1616                 if (!wps_is_selected_pbc_registrar(ie)) {
1617                         wpabuf_free(ie);
1618                         continue;
1619                 }
1620                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1621                            MACSTR, MAC2STR(bss->bssid));
1622                 uuid = wps_get_uuid_e(ie);
1623                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1624                             uuid, UUID_LEN);
1625                 if (sel_uuid == NULL || uuid == NULL ||
1626                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1627                         ret = 1; /* PBC overlap */
1628                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1629                                 MACSTR " and " MACSTR,
1630                                 MAC2STR(selected->bssid),
1631                                 MAC2STR(bss->bssid));
1632                         wpabuf_free(ie);
1633                         break;
1634                 }
1635
1636                 /* TODO: verify that this is reasonable dual-band situation */
1637
1638                 wpabuf_free(ie);
1639         }
1640
1641         wpabuf_free(wps_ie);
1642
1643         return ret;
1644 }
1645
1646
1647 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1648 {
1649         struct wpa_bss *bss;
1650         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1651
1652         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1653                 return;
1654
1655         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1656                 struct wpabuf *ie;
1657                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1658                 if (!ie)
1659                         continue;
1660                 if (wps_is_selected_pbc_registrar(ie))
1661                         pbc++;
1662                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1663                         auth++;
1664                 else if (wps_is_selected_pin_registrar(ie))
1665                         pin++;
1666                 else
1667                         wps++;
1668                 wpabuf_free(ie);
1669         }
1670
1671         if (pbc)
1672                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1673         else if (auth)
1674                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1675         else if (pin)
1676                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1677         else if (wps)
1678                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1679 }
1680
1681
1682 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1683 {
1684         struct wpa_ssid *ssid;
1685
1686         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1687                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1688                         return 1;
1689         }
1690
1691         return 0;
1692 }
1693
1694
1695 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1696                               char *end)
1697 {
1698         struct wpabuf *wps_ie;
1699         int ret;
1700
1701         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1702         if (wps_ie == NULL)
1703                 return 0;
1704
1705         ret = wps_attr_text(wps_ie, buf, end);
1706         wpabuf_free(wps_ie);
1707         return ret;
1708 }
1709
1710
1711 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1712 {
1713 #ifdef CONFIG_WPS_ER
1714         if (wpa_s->wps_er) {
1715                 wps_er_refresh(wpa_s->wps_er);
1716                 return 0;
1717         }
1718         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1719         if (wpa_s->wps_er == NULL)
1720                 return -1;
1721         return 0;
1722 #else /* CONFIG_WPS_ER */
1723         return 0;
1724 #endif /* CONFIG_WPS_ER */
1725 }
1726
1727
1728 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1729 {
1730 #ifdef CONFIG_WPS_ER
1731         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1732         wpa_s->wps_er = NULL;
1733 #endif /* CONFIG_WPS_ER */
1734         return 0;
1735 }
1736
1737
1738 #ifdef CONFIG_WPS_ER
1739 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1740                         const char *uuid, const char *pin)
1741 {
1742         u8 u[UUID_LEN];
1743         const u8 *use_uuid = NULL;
1744         u8 addr_buf[ETH_ALEN];
1745
1746         if (os_strcmp(uuid, "any") == 0) {
1747         } else if (uuid_str2bin(uuid, u) == 0) {
1748                 use_uuid = u;
1749         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1750                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1751                 if (use_uuid == NULL)
1752                         return -1;
1753         } else
1754                 return -1;
1755         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1756                                      use_uuid,
1757                                      (const u8 *) pin, os_strlen(pin), 300);
1758 }
1759
1760
1761 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1762 {
1763         u8 u[UUID_LEN], *use_uuid = NULL;
1764         u8 addr[ETH_ALEN], *use_addr = NULL;
1765
1766         if (uuid_str2bin(uuid, u) == 0)
1767                 use_uuid = u;
1768         else if (hwaddr_aton(uuid, addr) == 0)
1769                 use_addr = addr;
1770         else
1771                 return -1;
1772         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1773 }
1774
1775
1776 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1777                       const char *pin)
1778 {
1779         u8 u[UUID_LEN], *use_uuid = NULL;
1780         u8 addr[ETH_ALEN], *use_addr = NULL;
1781
1782         if (uuid_str2bin(uuid, u) == 0)
1783                 use_uuid = u;
1784         else if (hwaddr_aton(uuid, addr) == 0)
1785                 use_addr = addr;
1786         else
1787                 return -1;
1788
1789         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1790                             os_strlen(pin));
1791 }
1792
1793
1794 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1795                                     struct wps_credential *cred)
1796 {
1797         os_memset(cred, 0, sizeof(*cred));
1798         if (ssid->ssid_len > 32)
1799                 return -1;
1800         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1801         cred->ssid_len = ssid->ssid_len;
1802         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1803                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1804                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1805                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1806                         cred->encr_type = WPS_ENCR_AES;
1807                 else
1808                         cred->encr_type = WPS_ENCR_TKIP;
1809                 if (ssid->passphrase) {
1810                         cred->key_len = os_strlen(ssid->passphrase);
1811                         if (cred->key_len >= 64)
1812                                 return -1;
1813                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1814                 } else if (ssid->psk_set) {
1815                         cred->key_len = 32;
1816                         os_memcpy(cred->key, ssid->psk, 32);
1817                 } else
1818                         return -1;
1819         } else {
1820                 cred->auth_type = WPS_AUTH_OPEN;
1821                 cred->encr_type = WPS_ENCR_NONE;
1822         }
1823
1824         return 0;
1825 }
1826
1827
1828 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1829                            int id)
1830 {
1831         u8 u[UUID_LEN], *use_uuid = NULL;
1832         u8 addr[ETH_ALEN], *use_addr = NULL;
1833         struct wpa_ssid *ssid;
1834         struct wps_credential cred;
1835
1836         if (uuid_str2bin(uuid, u) == 0)
1837                 use_uuid = u;
1838         else if (hwaddr_aton(uuid, addr) == 0)
1839                 use_addr = addr;
1840         else
1841                 return -1;
1842         ssid = wpa_config_get_network(wpa_s->conf, id);
1843         if (ssid == NULL || ssid->ssid == NULL)
1844                 return -1;
1845
1846         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1847                 return -1;
1848         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1849 }
1850
1851
1852 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1853                        const char *pin, struct wps_new_ap_settings *settings)
1854 {
1855         u8 u[UUID_LEN], *use_uuid = NULL;
1856         u8 addr[ETH_ALEN], *use_addr = NULL;
1857         struct wps_credential cred;
1858         size_t len;
1859
1860         if (uuid_str2bin(uuid, u) == 0)
1861                 use_uuid = u;
1862         else if (hwaddr_aton(uuid, addr) == 0)
1863                 use_addr = addr;
1864         else
1865                 return -1;
1866         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1867             settings->encr == NULL || settings->key_hex == NULL)
1868                 return -1;
1869
1870         os_memset(&cred, 0, sizeof(cred));
1871         len = os_strlen(settings->ssid_hex);
1872         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1873             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1874                 return -1;
1875         cred.ssid_len = len / 2;
1876
1877         len = os_strlen(settings->key_hex);
1878         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1879             hexstr2bin(settings->key_hex, cred.key, len / 2))
1880                 return -1;
1881         cred.key_len = len / 2;
1882
1883         if (os_strcmp(settings->auth, "OPEN") == 0)
1884                 cred.auth_type = WPS_AUTH_OPEN;
1885         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1886                 cred.auth_type = WPS_AUTH_WPAPSK;
1887         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1888                 cred.auth_type = WPS_AUTH_WPA2PSK;
1889         else
1890                 return -1;
1891
1892         if (os_strcmp(settings->encr, "NONE") == 0)
1893                 cred.encr_type = WPS_ENCR_NONE;
1894         else if (os_strcmp(settings->encr, "WEP") == 0)
1895                 cred.encr_type = WPS_ENCR_WEP;
1896         else if (os_strcmp(settings->encr, "TKIP") == 0)
1897                 cred.encr_type = WPS_ENCR_TKIP;
1898         else if (os_strcmp(settings->encr, "CCMP") == 0)
1899                 cred.encr_type = WPS_ENCR_AES;
1900         else
1901                 return -1;
1902
1903         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1904                              (const u8 *) pin, os_strlen(pin), &cred);
1905 }
1906
1907
1908 #ifdef CONFIG_WPS_NFC
1909 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1910                                              int ndef, const char *uuid)
1911 {
1912         struct wpabuf *ret;
1913         u8 u[UUID_LEN], *use_uuid = NULL;
1914         u8 addr[ETH_ALEN], *use_addr = NULL;
1915
1916         if (!wpa_s->wps_er)
1917                 return NULL;
1918
1919         if (uuid_str2bin(uuid, u) == 0)
1920                 use_uuid = u;
1921         else if (hwaddr_aton(uuid, addr) == 0)
1922                 use_addr = addr;
1923         else
1924                 return NULL;
1925
1926         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1927         if (ndef && ret) {
1928                 struct wpabuf *tmp;
1929                 tmp = ndef_build_wifi(ret);
1930                 wpabuf_free(ret);
1931                 if (tmp == NULL)
1932                         return NULL;
1933                 ret = tmp;
1934         }
1935
1936         return ret;
1937 }
1938 #endif /* CONFIG_WPS_NFC */
1939
1940
1941 static int callbacks_pending = 0;
1942
1943 static void wpas_wps_terminate_cb(void *ctx)
1944 {
1945         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1946         if (--callbacks_pending <= 0)
1947                 eloop_terminate();
1948 }
1949 #endif /* CONFIG_WPS_ER */
1950
1951
1952 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1953 {
1954 #ifdef CONFIG_WPS_ER
1955         if (wpa_s->wps_er) {
1956                 callbacks_pending++;
1957                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1958                 wpa_s->wps_er = NULL;
1959                 return 1;
1960         }
1961 #endif /* CONFIG_WPS_ER */
1962         return 0;
1963 }
1964
1965
1966 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1967 {
1968         struct wps_context *wps = wpa_s->wps;
1969
1970         if (wps == NULL)
1971                 return;
1972
1973         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1974                 wps->config_methods = wps_config_methods_str2bin(
1975                         wpa_s->conf->config_methods);
1976                 if ((wps->config_methods &
1977                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1978                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1979                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1980                                    "config methods are not allowed at the "
1981                                    "same time");
1982                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1983                 }
1984         }
1985         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1986         wps->dev.config_methods = wps->config_methods;
1987
1988         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1989                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1990                           WPS_DEV_TYPE_LEN);
1991
1992         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1993                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1994                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1995                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1996         }
1997
1998         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1999                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2000
2001         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2002                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2003
2004         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2005                 wpas_wps_set_uuid(wpa_s, wps);
2006
2007         if (wpa_s->conf->changed_parameters &
2008             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2009                 /* Update pointers to make sure they refer current values */
2010                 wps->dev.device_name = wpa_s->conf->device_name;
2011                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2012                 wps->dev.model_name = wpa_s->conf->model_name;
2013                 wps->dev.model_number = wpa_s->conf->model_number;
2014                 wps->dev.serial_number = wpa_s->conf->serial_number;
2015         }
2016 }
2017
2018
2019 #ifdef CONFIG_WPS_NFC
2020
2021 #ifdef CONFIG_WPS_ER
2022 static struct wpabuf *
2023 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2024                               struct wpa_ssid *ssid)
2025 {
2026         struct wpabuf *ret;
2027         struct wps_credential cred;
2028
2029         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2030                 return NULL;
2031
2032         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2033
2034         if (ndef && ret) {
2035                 struct wpabuf *tmp;
2036                 tmp = ndef_build_wifi(ret);
2037                 wpabuf_free(ret);
2038                 if (tmp == NULL)
2039                         return NULL;
2040                 ret = tmp;
2041         }
2042
2043         return ret;
2044 }
2045 #endif /* CONFIG_WPS_ER */
2046
2047
2048 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2049                                           int ndef, const char *id_str)
2050 {
2051 #ifdef CONFIG_WPS_ER
2052         if (id_str) {
2053                 int id;
2054                 char *end = NULL;
2055                 struct wpa_ssid *ssid;
2056
2057                 id = strtol(id_str, &end, 10);
2058                 if (end && *end)
2059                         return NULL;
2060
2061                 ssid = wpa_config_get_network(wpa_s->conf, id);
2062                 if (ssid == NULL)
2063                         return NULL;
2064                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2065         }
2066 #endif /* CONFIG_WPS_ER */
2067 #ifdef CONFIG_AP
2068         if (wpa_s->ap_iface)
2069                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2070 #endif /* CONFIG_AP */
2071         return NULL;
2072 }
2073
2074
2075 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2076 {
2077         if (wpa_s->conf->wps_nfc_pw_from_config) {
2078                 return wps_nfc_token_build(ndef,
2079                                            wpa_s->conf->wps_nfc_dev_pw_id,
2080                                            wpa_s->conf->wps_nfc_dh_pubkey,
2081                                            wpa_s->conf->wps_nfc_dev_pw);
2082         }
2083
2084         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2085                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2086                                  &wpa_s->conf->wps_nfc_dh_privkey,
2087                                  &wpa_s->conf->wps_nfc_dev_pw);
2088 }
2089
2090
2091 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid,
2092                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2093                        int p2p_group, const u8 *peer_pubkey_hash)
2094 {
2095         struct wps_context *wps = wpa_s->wps;
2096         char pw[32 * 2 + 1];
2097
2098         if (dev_pw == NULL) {
2099                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2100                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2101         }
2102
2103         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2104             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2105             dev_pw == NULL)
2106                 return -1;
2107
2108         dh5_free(wps->dh_ctx);
2109         wpabuf_free(wps->dh_pubkey);
2110         wpabuf_free(wps->dh_privkey);
2111         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2112         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2113         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2114                 wps->dh_ctx = NULL;
2115                 wpabuf_free(wps->dh_pubkey);
2116                 wps->dh_pubkey = NULL;
2117                 wpabuf_free(wps->dh_privkey);
2118                 wps->dh_privkey = NULL;
2119                 return -1;
2120         }
2121         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2122         if (wps->dh_ctx == NULL) {
2123                 wpabuf_free(wps->dh_pubkey);
2124                 wps->dh_pubkey = NULL;
2125                 wpabuf_free(wps->dh_privkey);
2126                 wps->dh_privkey = NULL;
2127                 return -1;
2128         }
2129
2130         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2131                                    wpabuf_head(dev_pw), wpabuf_len(dev_pw));
2132         return wpas_wps_start_dev_pw(wpa_s, bssid, pw, p2p_group, dev_pw_id,
2133                                      peer_pubkey_hash);
2134 }
2135
2136
2137 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2138                              struct wps_parse_attr *attr)
2139 {
2140         wpa_s->wps_ap_channel = 0;
2141
2142         /*
2143          * Disable existing networks temporarily to allow the newly learned
2144          * credential to be preferred. Enable the temporarily disabled networks
2145          * after 10 seconds.
2146          */
2147         wpas_wps_temp_disable(wpa_s, NULL);
2148         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2149                                NULL);
2150
2151         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2152                 return -1;
2153
2154         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2155                 return 0;
2156
2157         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2158                    "based on the received credential added");
2159         wpa_s->normal_scans = 0;
2160         wpa_supplicant_reinit_autoscan(wpa_s);
2161         if (wpa_s->wps_ap_channel) {
2162                 u16 chan = wpa_s->wps_ap_channel;
2163                 int freq = 0;
2164
2165                 if (chan >= 1 && chan <= 13)
2166                         freq = 2407 + 5 * chan;
2167                 else if (chan == 14)
2168                         freq = 2484;
2169                 else if (chan >= 30)
2170                         freq = 5000 + 5 * chan;
2171
2172                 if (freq) {
2173                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2174                                    "AP channel %u -> %u MHz", chan, freq);
2175                         wpa_s->after_wps = 5;
2176                         wpa_s->wps_freq = freq;
2177                 }
2178         }
2179         wpa_s->disconnected = 0;
2180         wpa_s->reassociate = 1;
2181
2182         wpa_supplicant_cancel_sched_scan(wpa_s);
2183         wpa_supplicant_req_scan(wpa_s, 0, 0);
2184
2185         return 0;
2186 }
2187
2188
2189 #ifdef CONFIG_WPS_ER
2190 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2191                                            struct wps_parse_attr *attr)
2192 {
2193         return wps_registrar_add_nfc_password_token(
2194                 wpa_s->wps->registrar, attr->oob_dev_password,
2195                 attr->oob_dev_password_len);
2196 }
2197 #endif /* CONFIG_WPS_ER */
2198
2199
2200 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2201                                     const struct wpabuf *wps)
2202 {
2203         struct wps_parse_attr attr;
2204
2205         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2206
2207         if (wps_parse_msg(wps, &attr)) {
2208                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2209                 return -1;
2210         }
2211
2212         if (attr.num_cred)
2213                 return wpas_wps_use_cred(wpa_s, &attr);
2214
2215 #ifdef CONFIG_WPS_ER
2216         if (attr.oob_dev_password)
2217                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2218 #endif /* CONFIG_WPS_ER */
2219
2220         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2221         return -1;
2222 }
2223
2224
2225 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2226                           const struct wpabuf *data)
2227 {
2228         const struct wpabuf *wps = data;
2229         struct wpabuf *tmp = NULL;
2230         int ret;
2231
2232         if (wpabuf_len(data) < 4)
2233                 return -1;
2234
2235         if (*wpabuf_head_u8(data) != 0x10) {
2236                 /* Assume this contains full NDEF record */
2237                 tmp = ndef_parse_wifi(data);
2238                 if (tmp == NULL) {
2239                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2240                         return -1;
2241                 }
2242                 wps = tmp;
2243         }
2244
2245         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2246         wpabuf_free(tmp);
2247         return ret;
2248 }
2249
2250
2251 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2252 {
2253         if (cr)
2254                 return ndef_build_wifi_hc(1);
2255         return ndef_build_wifi_hr();
2256 }
2257
2258
2259 #ifdef CONFIG_WPS_NFC
2260 static struct wpabuf *
2261 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2262                              const char *uuid)
2263 {
2264 #ifdef CONFIG_WPS_ER
2265         struct wpabuf *ret;
2266         u8 u[UUID_LEN], *use_uuid = NULL;
2267         u8 addr[ETH_ALEN], *use_addr = NULL;
2268
2269         if (!wpa_s->wps_er)
2270                 return NULL;
2271
2272         if (uuid == NULL)
2273                 return NULL;
2274         if (uuid_str2bin(uuid, u) == 0)
2275                 use_uuid = u;
2276         else if (hwaddr_aton(uuid, addr) == 0)
2277                 use_addr = addr;
2278         else
2279                 return NULL;
2280
2281         /*
2282          * Handover Select carrier record for WPS uses the same format as
2283          * configuration token.
2284          */
2285         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2286         if (ndef && ret) {
2287                 struct wpabuf *tmp;
2288                 tmp = ndef_build_wifi(ret);
2289                 wpabuf_free(ret);
2290                 if (tmp == NULL)
2291                         return NULL;
2292                 ret = tmp;
2293         }
2294
2295         return ret;
2296 #else /* CONFIG_WPS_ER */
2297         return NULL;
2298 #endif /* CONFIG_WPS_ER */
2299 }
2300 #endif /* CONFIG_WPS_NFC */
2301
2302
2303 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2304                                           int ndef, int cr, const char *uuid)
2305 {
2306         struct wpabuf *ret;
2307         if (!cr)
2308                 return NULL;
2309         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2310         if (ret)
2311                 return ret;
2312         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2313 }
2314
2315
2316 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2317                                  const struct wpabuf *data)
2318 {
2319         /* TODO */
2320         return -1;
2321 }
2322
2323
2324 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2325                                  const struct wpabuf *data)
2326 {
2327         struct wpabuf *wps;
2328         int ret;
2329
2330         wps = ndef_parse_wifi(data);
2331         if (wps == NULL)
2332                 return -1;
2333         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2334                    "payload from NFC connection handover");
2335         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2336         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2337         wpabuf_free(wps);
2338
2339         return ret;
2340 }
2341
2342
2343 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2344                                  const struct wpabuf *req,
2345                                  const struct wpabuf *sel)
2346 {
2347         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2348         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2349         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2350         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2351 }
2352
2353 #endif /* CONFIG_WPS_NFC */
2354
2355
2356 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2357 {
2358         size_t i;
2359         struct os_reltime now;
2360
2361         if (wpa_debug_level > MSG_DEBUG)
2362                 return;
2363
2364         if (wpa_s->wps_ap == NULL)
2365                 return;
2366
2367         os_get_reltime(&now);
2368
2369         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2370                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2371                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2372
2373                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2374                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2375                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2376                            ap->last_attempt.sec > 0 ?
2377                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2378                            e ? e->count : 0);
2379         }
2380 }
2381
2382
2383 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2384                                                  const u8 *bssid)
2385 {
2386         size_t i;
2387
2388         if (wpa_s->wps_ap == NULL)
2389                 return NULL;
2390
2391         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2392                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2393                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2394                         return ap;
2395         }
2396
2397         return NULL;
2398 }
2399
2400
2401 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2402                                         struct wpa_scan_res *res)
2403 {
2404         struct wpabuf *wps;
2405         enum wps_ap_info_type type;
2406         struct wps_ap_info *ap;
2407         int r;
2408
2409         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2410                 return;
2411
2412         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2413         if (wps == NULL)
2414                 return;
2415
2416         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2417         if (r == 2)
2418                 type = WPS_AP_SEL_REG_OUR;
2419         else if (r == 1)
2420                 type = WPS_AP_SEL_REG;
2421         else
2422                 type = WPS_AP_NOT_SEL_REG;
2423
2424         wpabuf_free(wps);
2425
2426         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2427         if (ap) {
2428                 if (ap->type != type) {
2429                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2430                                    " changed type %d -> %d",
2431                                    MAC2STR(res->bssid), ap->type, type);
2432                         ap->type = type;
2433                         if (type != WPS_AP_NOT_SEL_REG)
2434                                 wpa_blacklist_del(wpa_s, ap->bssid);
2435                 }
2436                 return;
2437         }
2438
2439         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2440                               sizeof(struct wps_ap_info));
2441         if (ap == NULL)
2442                 return;
2443
2444         wpa_s->wps_ap = ap;
2445         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2446         wpa_s->num_wps_ap++;
2447
2448         os_memset(ap, 0, sizeof(*ap));
2449         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2450         ap->type = type;
2451         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2452                    MAC2STR(ap->bssid), ap->type);
2453 }
2454
2455
2456 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2457                              struct wpa_scan_results *scan_res)
2458 {
2459         size_t i;
2460
2461         for (i = 0; i < scan_res->num; i++)
2462                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2463
2464         wpas_wps_dump_ap_info(wpa_s);
2465 }
2466
2467
2468 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2469 {
2470         struct wps_ap_info *ap;
2471
2472         wpa_s->after_wps = 0;
2473
2474         if (!wpa_s->wps_ap_iter)
2475                 return;
2476         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2477         if (ap == NULL)
2478                 return;
2479         ap->tries++;
2480         os_get_reltime(&ap->last_attempt);
2481 }