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                                  const u8 *ssid_val, size_t ssid_len)
1079 {
1080         struct wpa_ssid *ssid;
1081         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1082         unsigned int rpin = 0;
1083         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1084
1085         wpas_clear_wps(wpa_s);
1086         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1087         if (ssid == NULL) {
1088                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1089                 return -1;
1090         }
1091         ssid->temporary = 1;
1092         ssid->p2p_group = p2p_group;
1093         if (ssid_val) {
1094                 ssid->ssid = os_malloc(ssid_len);
1095                 if (ssid->ssid) {
1096                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1097                         ssid->ssid_len = ssid_len;
1098                 }
1099         }
1100         if (peer_pubkey_hash) {
1101                 os_memcpy(hash, " pkhash=", 8);
1102                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1103                                            peer_pubkey_hash,
1104                                            WPS_OOB_PUBKEY_HASH_LEN);
1105         } else {
1106                 hash[0] = '\0';
1107         }
1108 #ifdef CONFIG_P2P
1109         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1110                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1111                 if (ssid->ssid) {
1112                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1113                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1114                                   ssid->ssid_len);
1115                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1116                                           "SSID", ssid->ssid, ssid->ssid_len);
1117                 }
1118         }
1119 #endif /* CONFIG_P2P */
1120         if (pin)
1121                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1122                             pin, dev_pw_id, hash);
1123         else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1124                 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1125                             dev_pw_id, hash);
1126         } else {
1127                 rpin = wps_generate_pin();
1128                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1129                             rpin, dev_pw_id, hash);
1130         }
1131         if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1132                 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1133                 return -1;
1134         }
1135         if (wpa_s->wps_fragment_size)
1136                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1137         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1138                                wpa_s, NULL);
1139         wpa_s->wps_ap_iter = 1;
1140         wpas_wps_reassoc(wpa_s, ssid, bssid);
1141         return rpin;
1142 }
1143
1144
1145 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1146                        const char *pin, int p2p_group, u16 dev_pw_id)
1147 {
1148         return wpas_wps_start_dev_pw(wpa_s, bssid, pin, p2p_group, dev_pw_id,
1149                                      NULL, NULL, 0);
1150 }
1151
1152
1153 /* Cancel the wps pbc/pin requests */
1154 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1155 {
1156 #ifdef CONFIG_AP
1157         if (wpa_s->ap_iface) {
1158                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1159                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1160         }
1161 #endif /* CONFIG_AP */
1162
1163         if (wpa_s->wpa_state == WPA_SCANNING ||
1164             wpa_s->wpa_state == WPA_DISCONNECTED) {
1165                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1166                 wpa_supplicant_cancel_scan(wpa_s);
1167                 wpas_clear_wps(wpa_s);
1168         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1169                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1170                            "deauthenticate");
1171                 wpa_supplicant_deauthenticate(wpa_s,
1172                                               WLAN_REASON_DEAUTH_LEAVING);
1173                 wpas_clear_wps(wpa_s);
1174         } else {
1175                 wpas_wps_reenable_networks(wpa_s);
1176                 wpas_wps_clear_ap_info(wpa_s);
1177                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1178                     0)
1179                         wpas_clear_wps(wpa_s);
1180         }
1181
1182         wpa_s->after_wps = 0;
1183
1184         return 0;
1185 }
1186
1187
1188 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1189                        const char *pin, struct wps_new_ap_settings *settings)
1190 {
1191         struct wpa_ssid *ssid;
1192         char val[200];
1193         char *pos, *end;
1194         int res;
1195
1196         if (!pin)
1197                 return -1;
1198         wpas_clear_wps(wpa_s);
1199         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1200         if (ssid == NULL)
1201                 return -1;
1202         ssid->temporary = 1;
1203         pos = val;
1204         end = pos + sizeof(val);
1205         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1206         if (res < 0 || res >= end - pos)
1207                 return -1;
1208         pos += res;
1209         if (settings) {
1210                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1211                                   "new_encr=%s new_key=%s",
1212                                   settings->ssid_hex, settings->auth,
1213                                   settings->encr, settings->key_hex);
1214                 if (res < 0 || res >= end - pos)
1215                         return -1;
1216                 pos += res;
1217         }
1218         res = os_snprintf(pos, end - pos, "\"");
1219         if (res < 0 || res >= end - pos)
1220                 return -1;
1221         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1222                 return -1;
1223         if (wpa_s->wps_fragment_size)
1224                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1225         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1226                                wpa_s, NULL);
1227         wpas_wps_reassoc(wpa_s, ssid, bssid);
1228         return 0;
1229 }
1230
1231
1232 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1233                                const u8 *p2p_dev_addr, const u8 *psk,
1234                                size_t psk_len)
1235 {
1236         if (is_zero_ether_addr(p2p_dev_addr)) {
1237                 wpa_printf(MSG_DEBUG,
1238                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1239                            MAC2STR(mac_addr));
1240         } else {
1241                 wpa_printf(MSG_DEBUG,
1242                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1243                            " P2P Device Addr " MACSTR,
1244                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1245         }
1246         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1247
1248         /* TODO */
1249
1250         return 0;
1251 }
1252
1253
1254 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1255                                    const struct wps_device_data *dev)
1256 {
1257         char uuid[40], txt[400];
1258         int len;
1259         char devtype[WPS_DEV_TYPE_BUFSIZE];
1260         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1261                 return;
1262         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1263         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1264                           " [%s|%s|%s|%s|%s|%s]",
1265                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1266                           dev->manufacturer, dev->model_name,
1267                           dev->model_number, dev->serial_number,
1268                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1269                                                sizeof(devtype)));
1270         if (len > 0 && len < (int) sizeof(txt))
1271                 wpa_printf(MSG_INFO, "%s", txt);
1272 }
1273
1274
1275 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1276                                     u16 sel_reg_config_methods)
1277 {
1278 #ifdef CONFIG_WPS_ER
1279         struct wpa_supplicant *wpa_s = ctx;
1280
1281         if (wpa_s->wps_er == NULL)
1282                 return;
1283         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1284                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1285                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1286         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1287                            sel_reg_config_methods);
1288 #endif /* CONFIG_WPS_ER */
1289 }
1290
1291
1292 static u16 wps_fix_config_methods(u16 config_methods)
1293 {
1294 #ifdef CONFIG_WPS2
1295         if ((config_methods &
1296              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1297               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1298                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1299                            "virtual_display for WPS 2.0 compliance");
1300                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1301         }
1302         if ((config_methods &
1303              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1304               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1305                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1306                            "virtual_push_button for WPS 2.0 compliance");
1307                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1308         }
1309 #endif /* CONFIG_WPS2 */
1310
1311         return config_methods;
1312 }
1313
1314
1315 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1316                               struct wps_context *wps)
1317 {
1318         char buf[50];
1319         const char *src;
1320
1321         if (is_nil_uuid(wpa_s->conf->uuid)) {
1322                 struct wpa_supplicant *first;
1323                 first = wpa_s->global->ifaces;
1324                 while (first && first->next)
1325                         first = first->next;
1326                 if (first && first != wpa_s) {
1327                         if (wps != wpa_s->global->ifaces->wps)
1328                                 os_memcpy(wps->uuid,
1329                                           wpa_s->global->ifaces->wps->uuid,
1330                                           WPS_UUID_LEN);
1331                         src = "from the first interface";
1332                 } else {
1333                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1334                         src = "based on MAC address";
1335                 }
1336         } else {
1337                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1338                 src = "based on configuration";
1339         }
1340
1341         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1342         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1343 }
1344
1345
1346 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1347                                        struct wps_context *wps)
1348 {
1349         wpabuf_free(wps->dev.vendor_ext_m1);
1350         wps->dev.vendor_ext_m1 = NULL;
1351
1352         if (wpa_s->conf->wps_vendor_ext_m1) {
1353                 wps->dev.vendor_ext_m1 =
1354                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1355                 if (!wps->dev.vendor_ext_m1) {
1356                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1357                                    "allocate memory for vendor_ext_m1");
1358                 }
1359         }
1360 }
1361
1362
1363 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1364 {
1365         struct wps_context *wps;
1366         struct wps_registrar_config rcfg;
1367         struct hostapd_hw_modes *modes;
1368         u16 m;
1369
1370         wps = os_zalloc(sizeof(*wps));
1371         if (wps == NULL)
1372                 return -1;
1373
1374         wps->cred_cb = wpa_supplicant_wps_cred;
1375         wps->event_cb = wpa_supplicant_wps_event;
1376         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1377         wps->cb_ctx = wpa_s;
1378
1379         wps->dev.device_name = wpa_s->conf->device_name;
1380         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1381         wps->dev.model_name = wpa_s->conf->model_name;
1382         wps->dev.model_number = wpa_s->conf->model_number;
1383         wps->dev.serial_number = wpa_s->conf->serial_number;
1384         wps->config_methods =
1385                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1386         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1387             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1388                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1389                            "methods are not allowed at the same time");
1390                 os_free(wps);
1391                 return -1;
1392         }
1393         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1394         wps->dev.config_methods = wps->config_methods;
1395         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1396                   WPS_DEV_TYPE_LEN);
1397
1398         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1399         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1400                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1401
1402         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1403
1404         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1405         modes = wpa_s->hw.modes;
1406         if (modes) {
1407                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1408                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1409                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1410                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1411                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1412                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1413                 }
1414         }
1415         if (wps->dev.rf_bands == 0) {
1416                 /*
1417                  * Default to claiming support for both bands if the driver
1418                  * does not provide support for fetching supported bands.
1419                  */
1420                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1421         }
1422         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1423         wpas_wps_set_uuid(wpa_s, wps);
1424
1425         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1426         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1427
1428         os_memset(&rcfg, 0, sizeof(rcfg));
1429         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1430         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1431         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1432         rcfg.cb_ctx = wpa_s;
1433
1434         wps->registrar = wps_registrar_init(wps, &rcfg);
1435         if (wps->registrar == NULL) {
1436                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1437                 os_free(wps);
1438                 return -1;
1439         }
1440
1441         wpa_s->wps = wps;
1442
1443         return 0;
1444 }
1445
1446
1447 #ifdef CONFIG_WPS_ER
1448 static void wpas_wps_nfc_clear(struct wps_context *wps)
1449 {
1450         wps->ap_nfc_dev_pw_id = 0;
1451         wpabuf_free(wps->ap_nfc_dh_pubkey);
1452         wps->ap_nfc_dh_pubkey = NULL;
1453         wpabuf_free(wps->ap_nfc_dh_privkey);
1454         wps->ap_nfc_dh_privkey = NULL;
1455         wpabuf_free(wps->ap_nfc_dev_pw);
1456         wps->ap_nfc_dev_pw = NULL;
1457 }
1458 #endif /* CONFIG_WPS_ER */
1459
1460
1461 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1462 {
1463         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1464         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1465         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1466         wpas_wps_clear_ap_info(wpa_s);
1467
1468         if (wpa_s->wps == NULL)
1469                 return;
1470
1471 #ifdef CONFIG_WPS_ER
1472         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1473         wpa_s->wps_er = NULL;
1474         wpas_wps_nfc_clear(wpa_s->wps);
1475 #endif /* CONFIG_WPS_ER */
1476
1477         wps_registrar_deinit(wpa_s->wps->registrar);
1478         wpabuf_free(wpa_s->wps->dh_pubkey);
1479         wpabuf_free(wpa_s->wps->dh_privkey);
1480         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1481         os_free(wpa_s->wps->network_key);
1482         os_free(wpa_s->wps);
1483         wpa_s->wps = NULL;
1484 }
1485
1486
1487 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1488                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1489 {
1490         struct wpabuf *wps_ie;
1491
1492         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1493                 return -1;
1494
1495         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1496         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1497                 if (!wps_ie) {
1498                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1499                         return 0;
1500                 }
1501
1502                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1503                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1504                                    "without active PBC Registrar");
1505                         wpabuf_free(wps_ie);
1506                         return 0;
1507                 }
1508
1509                 /* TODO: overlap detection */
1510                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1511                            "(Active PBC)");
1512                 wpabuf_free(wps_ie);
1513                 return 1;
1514         }
1515
1516         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1517                 if (!wps_ie) {
1518                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1519                         return 0;
1520                 }
1521
1522                 /*
1523                  * Start with WPS APs that advertise our address as an
1524                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1525                  * allow any WPS AP after couple of scans since some APs do not
1526                  * set Selected Registrar attribute properly when using
1527                  * external Registrar.
1528                  */
1529                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1530                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1531                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1532                                            "without active PIN Registrar");
1533                                 wpabuf_free(wps_ie);
1534                                 return 0;
1535                         }
1536                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1537                 } else {
1538                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1539                                    "(Authorized MAC or Active PIN)");
1540                 }
1541                 wpabuf_free(wps_ie);
1542                 return 1;
1543         }
1544
1545         if (wps_ie) {
1546                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1547                 wpabuf_free(wps_ie);
1548                 return 1;
1549         }
1550
1551         return -1;
1552 }
1553
1554
1555 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1556                               struct wpa_ssid *ssid,
1557                               struct wpa_bss *bss)
1558 {
1559         struct wpabuf *wps_ie = NULL;
1560         int ret = 0;
1561
1562         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1563                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1564                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1565                         /* allow wildcard SSID for WPS PBC */
1566                         ret = 1;
1567                 }
1568         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1569                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1570                 if (wps_ie &&
1571                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1572                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1573                         /* allow wildcard SSID for WPS PIN */
1574                         ret = 1;
1575                 }
1576         }
1577
1578         if (!ret && ssid->bssid_set &&
1579             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1580                 /* allow wildcard SSID due to hardcoded BSSID match */
1581                 ret = 1;
1582         }
1583
1584 #ifdef CONFIG_WPS_STRICT
1585         if (wps_ie) {
1586                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1587                                                    0, bss->bssid) < 0)
1588                         ret = 0;
1589                 if (bss->beacon_ie_len) {
1590                         struct wpabuf *bcn_wps;
1591                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1592                                 bss, WPS_IE_VENDOR_TYPE);
1593                         if (bcn_wps == NULL) {
1594                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1595                                            "missing from AP Beacon");
1596                                 ret = 0;
1597                         } else {
1598                                 if (wps_validate_beacon(wps_ie) < 0)
1599                                         ret = 0;
1600                                 wpabuf_free(bcn_wps);
1601                         }
1602                 }
1603         }
1604 #endif /* CONFIG_WPS_STRICT */
1605
1606         wpabuf_free(wps_ie);
1607
1608         return ret;
1609 }
1610
1611
1612 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1613                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1614 {
1615         const u8 *sel_uuid, *uuid;
1616         struct wpabuf *wps_ie;
1617         int ret = 0;
1618         struct wpa_bss *bss;
1619
1620         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1621                 return 0;
1622
1623         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1624                    "present in scan results; selected BSSID " MACSTR,
1625                    MAC2STR(selected->bssid));
1626
1627         /* Make sure that only one AP is in active PBC mode */
1628         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1629         if (wps_ie) {
1630                 sel_uuid = wps_get_uuid_e(wps_ie);
1631                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1632                             sel_uuid, UUID_LEN);
1633         } else {
1634                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1635                            "WPS IE?!");
1636                 sel_uuid = NULL;
1637         }
1638
1639         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1640                 struct wpabuf *ie;
1641                 if (bss == selected)
1642                         continue;
1643                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1644                 if (!ie)
1645                         continue;
1646                 if (!wps_is_selected_pbc_registrar(ie)) {
1647                         wpabuf_free(ie);
1648                         continue;
1649                 }
1650                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1651                            MACSTR, MAC2STR(bss->bssid));
1652                 uuid = wps_get_uuid_e(ie);
1653                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1654                             uuid, UUID_LEN);
1655                 if (sel_uuid == NULL || uuid == NULL ||
1656                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1657                         ret = 1; /* PBC overlap */
1658                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1659                                 MACSTR " and " MACSTR,
1660                                 MAC2STR(selected->bssid),
1661                                 MAC2STR(bss->bssid));
1662                         wpabuf_free(ie);
1663                         break;
1664                 }
1665
1666                 /* TODO: verify that this is reasonable dual-band situation */
1667
1668                 wpabuf_free(ie);
1669         }
1670
1671         wpabuf_free(wps_ie);
1672
1673         return ret;
1674 }
1675
1676
1677 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1678 {
1679         struct wpa_bss *bss;
1680         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1681
1682         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1683                 return;
1684
1685         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1686                 struct wpabuf *ie;
1687                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1688                 if (!ie)
1689                         continue;
1690                 if (wps_is_selected_pbc_registrar(ie))
1691                         pbc++;
1692                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1693                         auth++;
1694                 else if (wps_is_selected_pin_registrar(ie))
1695                         pin++;
1696                 else
1697                         wps++;
1698                 wpabuf_free(ie);
1699         }
1700
1701         if (pbc)
1702                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1703         else if (auth)
1704                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1705         else if (pin)
1706                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1707         else if (wps)
1708                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1709 }
1710
1711
1712 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1713 {
1714         struct wpa_ssid *ssid;
1715
1716         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1717                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1718                         return 1;
1719         }
1720
1721         return 0;
1722 }
1723
1724
1725 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1726                               char *end)
1727 {
1728         struct wpabuf *wps_ie;
1729         int ret;
1730
1731         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1732         if (wps_ie == NULL)
1733                 return 0;
1734
1735         ret = wps_attr_text(wps_ie, buf, end);
1736         wpabuf_free(wps_ie);
1737         return ret;
1738 }
1739
1740
1741 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1742 {
1743 #ifdef CONFIG_WPS_ER
1744         if (wpa_s->wps_er) {
1745                 wps_er_refresh(wpa_s->wps_er);
1746                 return 0;
1747         }
1748         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1749         if (wpa_s->wps_er == NULL)
1750                 return -1;
1751         return 0;
1752 #else /* CONFIG_WPS_ER */
1753         return 0;
1754 #endif /* CONFIG_WPS_ER */
1755 }
1756
1757
1758 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1759 {
1760 #ifdef CONFIG_WPS_ER
1761         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1762         wpa_s->wps_er = NULL;
1763 #endif /* CONFIG_WPS_ER */
1764         return 0;
1765 }
1766
1767
1768 #ifdef CONFIG_WPS_ER
1769 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1770                         const char *uuid, const char *pin)
1771 {
1772         u8 u[UUID_LEN];
1773         const u8 *use_uuid = NULL;
1774         u8 addr_buf[ETH_ALEN];
1775
1776         if (os_strcmp(uuid, "any") == 0) {
1777         } else if (uuid_str2bin(uuid, u) == 0) {
1778                 use_uuid = u;
1779         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1780                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1781                 if (use_uuid == NULL)
1782                         return -1;
1783         } else
1784                 return -1;
1785         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1786                                      use_uuid,
1787                                      (const u8 *) pin, os_strlen(pin), 300);
1788 }
1789
1790
1791 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1792 {
1793         u8 u[UUID_LEN], *use_uuid = NULL;
1794         u8 addr[ETH_ALEN], *use_addr = NULL;
1795
1796         if (uuid_str2bin(uuid, u) == 0)
1797                 use_uuid = u;
1798         else if (hwaddr_aton(uuid, addr) == 0)
1799                 use_addr = addr;
1800         else
1801                 return -1;
1802         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1803 }
1804
1805
1806 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1807                       const char *pin)
1808 {
1809         u8 u[UUID_LEN], *use_uuid = NULL;
1810         u8 addr[ETH_ALEN], *use_addr = NULL;
1811
1812         if (uuid_str2bin(uuid, u) == 0)
1813                 use_uuid = u;
1814         else if (hwaddr_aton(uuid, addr) == 0)
1815                 use_addr = addr;
1816         else
1817                 return -1;
1818
1819         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1820                             os_strlen(pin));
1821 }
1822
1823
1824 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1825                                     struct wps_credential *cred)
1826 {
1827         os_memset(cred, 0, sizeof(*cred));
1828         if (ssid->ssid_len > 32)
1829                 return -1;
1830         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1831         cred->ssid_len = ssid->ssid_len;
1832         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1833                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1834                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1835                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1836                         cred->encr_type = WPS_ENCR_AES;
1837                 else
1838                         cred->encr_type = WPS_ENCR_TKIP;
1839                 if (ssid->passphrase) {
1840                         cred->key_len = os_strlen(ssid->passphrase);
1841                         if (cred->key_len >= 64)
1842                                 return -1;
1843                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1844                 } else if (ssid->psk_set) {
1845                         cred->key_len = 32;
1846                         os_memcpy(cred->key, ssid->psk, 32);
1847                 } else
1848                         return -1;
1849         } else {
1850                 cred->auth_type = WPS_AUTH_OPEN;
1851                 cred->encr_type = WPS_ENCR_NONE;
1852         }
1853
1854         return 0;
1855 }
1856
1857
1858 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1859                            int id)
1860 {
1861         u8 u[UUID_LEN], *use_uuid = NULL;
1862         u8 addr[ETH_ALEN], *use_addr = NULL;
1863         struct wpa_ssid *ssid;
1864         struct wps_credential cred;
1865
1866         if (uuid_str2bin(uuid, u) == 0)
1867                 use_uuid = u;
1868         else if (hwaddr_aton(uuid, addr) == 0)
1869                 use_addr = addr;
1870         else
1871                 return -1;
1872         ssid = wpa_config_get_network(wpa_s->conf, id);
1873         if (ssid == NULL || ssid->ssid == NULL)
1874                 return -1;
1875
1876         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1877                 return -1;
1878         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1879 }
1880
1881
1882 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1883                        const char *pin, struct wps_new_ap_settings *settings)
1884 {
1885         u8 u[UUID_LEN], *use_uuid = NULL;
1886         u8 addr[ETH_ALEN], *use_addr = NULL;
1887         struct wps_credential cred;
1888         size_t len;
1889
1890         if (uuid_str2bin(uuid, u) == 0)
1891                 use_uuid = u;
1892         else if (hwaddr_aton(uuid, addr) == 0)
1893                 use_addr = addr;
1894         else
1895                 return -1;
1896         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1897             settings->encr == NULL || settings->key_hex == NULL)
1898                 return -1;
1899
1900         os_memset(&cred, 0, sizeof(cred));
1901         len = os_strlen(settings->ssid_hex);
1902         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1903             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1904                 return -1;
1905         cred.ssid_len = len / 2;
1906
1907         len = os_strlen(settings->key_hex);
1908         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1909             hexstr2bin(settings->key_hex, cred.key, len / 2))
1910                 return -1;
1911         cred.key_len = len / 2;
1912
1913         if (os_strcmp(settings->auth, "OPEN") == 0)
1914                 cred.auth_type = WPS_AUTH_OPEN;
1915         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1916                 cred.auth_type = WPS_AUTH_WPAPSK;
1917         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1918                 cred.auth_type = WPS_AUTH_WPA2PSK;
1919         else
1920                 return -1;
1921
1922         if (os_strcmp(settings->encr, "NONE") == 0)
1923                 cred.encr_type = WPS_ENCR_NONE;
1924         else if (os_strcmp(settings->encr, "WEP") == 0)
1925                 cred.encr_type = WPS_ENCR_WEP;
1926         else if (os_strcmp(settings->encr, "TKIP") == 0)
1927                 cred.encr_type = WPS_ENCR_TKIP;
1928         else if (os_strcmp(settings->encr, "CCMP") == 0)
1929                 cred.encr_type = WPS_ENCR_AES;
1930         else
1931                 return -1;
1932
1933         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1934                              (const u8 *) pin, os_strlen(pin), &cred);
1935 }
1936
1937
1938 #ifdef CONFIG_WPS_NFC
1939 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1940                                              int ndef, const char *uuid)
1941 {
1942         struct wpabuf *ret;
1943         u8 u[UUID_LEN], *use_uuid = NULL;
1944         u8 addr[ETH_ALEN], *use_addr = NULL;
1945
1946         if (!wpa_s->wps_er)
1947                 return NULL;
1948
1949         if (uuid_str2bin(uuid, u) == 0)
1950                 use_uuid = u;
1951         else if (hwaddr_aton(uuid, addr) == 0)
1952                 use_addr = addr;
1953         else
1954                 return NULL;
1955
1956         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1957         if (ndef && ret) {
1958                 struct wpabuf *tmp;
1959                 tmp = ndef_build_wifi(ret);
1960                 wpabuf_free(ret);
1961                 if (tmp == NULL)
1962                         return NULL;
1963                 ret = tmp;
1964         }
1965
1966         return ret;
1967 }
1968 #endif /* CONFIG_WPS_NFC */
1969
1970
1971 static int callbacks_pending = 0;
1972
1973 static void wpas_wps_terminate_cb(void *ctx)
1974 {
1975         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1976         if (--callbacks_pending <= 0)
1977                 eloop_terminate();
1978 }
1979 #endif /* CONFIG_WPS_ER */
1980
1981
1982 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1983 {
1984 #ifdef CONFIG_WPS_ER
1985         if (wpa_s->wps_er) {
1986                 callbacks_pending++;
1987                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1988                 wpa_s->wps_er = NULL;
1989                 return 1;
1990         }
1991 #endif /* CONFIG_WPS_ER */
1992         return 0;
1993 }
1994
1995
1996 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1997 {
1998         struct wps_context *wps = wpa_s->wps;
1999
2000         if (wps == NULL)
2001                 return;
2002
2003         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2004                 wps->config_methods = wps_config_methods_str2bin(
2005                         wpa_s->conf->config_methods);
2006                 if ((wps->config_methods &
2007                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2008                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2009                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2010                                    "config methods are not allowed at the "
2011                                    "same time");
2012                         wps->config_methods &= ~WPS_CONFIG_LABEL;
2013                 }
2014         }
2015         wps->config_methods = wps_fix_config_methods(wps->config_methods);
2016         wps->dev.config_methods = wps->config_methods;
2017
2018         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2019                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2020                           WPS_DEV_TYPE_LEN);
2021
2022         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2023                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2024                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2025                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2026         }
2027
2028         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2029                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2030
2031         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2032                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2033
2034         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2035                 wpas_wps_set_uuid(wpa_s, wps);
2036
2037         if (wpa_s->conf->changed_parameters &
2038             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2039                 /* Update pointers to make sure they refer current values */
2040                 wps->dev.device_name = wpa_s->conf->device_name;
2041                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2042                 wps->dev.model_name = wpa_s->conf->model_name;
2043                 wps->dev.model_number = wpa_s->conf->model_number;
2044                 wps->dev.serial_number = wpa_s->conf->serial_number;
2045         }
2046 }
2047
2048
2049 #ifdef CONFIG_WPS_NFC
2050
2051 #ifdef CONFIG_WPS_ER
2052 static struct wpabuf *
2053 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2054                               struct wpa_ssid *ssid)
2055 {
2056         struct wpabuf *ret;
2057         struct wps_credential cred;
2058
2059         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2060                 return NULL;
2061
2062         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2063
2064         if (ndef && ret) {
2065                 struct wpabuf *tmp;
2066                 tmp = ndef_build_wifi(ret);
2067                 wpabuf_free(ret);
2068                 if (tmp == NULL)
2069                         return NULL;
2070                 ret = tmp;
2071         }
2072
2073         return ret;
2074 }
2075 #endif /* CONFIG_WPS_ER */
2076
2077
2078 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2079                                           int ndef, const char *id_str)
2080 {
2081 #ifdef CONFIG_WPS_ER
2082         if (id_str) {
2083                 int id;
2084                 char *end = NULL;
2085                 struct wpa_ssid *ssid;
2086
2087                 id = strtol(id_str, &end, 10);
2088                 if (end && *end)
2089                         return NULL;
2090
2091                 ssid = wpa_config_get_network(wpa_s->conf, id);
2092                 if (ssid == NULL)
2093                         return NULL;
2094                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2095         }
2096 #endif /* CONFIG_WPS_ER */
2097 #ifdef CONFIG_AP
2098         if (wpa_s->ap_iface)
2099                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2100 #endif /* CONFIG_AP */
2101         return NULL;
2102 }
2103
2104
2105 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2106 {
2107         if (wpa_s->conf->wps_nfc_pw_from_config) {
2108                 return wps_nfc_token_build(ndef,
2109                                            wpa_s->conf->wps_nfc_dev_pw_id,
2110                                            wpa_s->conf->wps_nfc_dh_pubkey,
2111                                            wpa_s->conf->wps_nfc_dev_pw);
2112         }
2113
2114         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2115                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2116                                  &wpa_s->conf->wps_nfc_dh_privkey,
2117                                  &wpa_s->conf->wps_nfc_dev_pw);
2118 }
2119
2120
2121 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid,
2122                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2123                        int p2p_group, const u8 *peer_pubkey_hash,
2124                        const u8 *ssid, size_t ssid_len)
2125 {
2126         struct wps_context *wps = wpa_s->wps;
2127         char pw[32 * 2 + 1];
2128
2129         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2130                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2131                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2132         }
2133
2134         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2135             wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2136                 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2137                            "cannot start NFC-triggered connection");
2138                 return -1;
2139         }
2140
2141         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2142                 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2143                            "cannot start NFC-triggered connection", dev_pw_id);
2144                 return -1;
2145         }
2146
2147         dh5_free(wps->dh_ctx);
2148         wpabuf_free(wps->dh_pubkey);
2149         wpabuf_free(wps->dh_privkey);
2150         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2151         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2152         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2153                 wps->dh_ctx = NULL;
2154                 wpabuf_free(wps->dh_pubkey);
2155                 wps->dh_pubkey = NULL;
2156                 wpabuf_free(wps->dh_privkey);
2157                 wps->dh_privkey = NULL;
2158                 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2159                 return -1;
2160         }
2161         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2162         if (wps->dh_ctx == NULL) {
2163                 wpabuf_free(wps->dh_pubkey);
2164                 wps->dh_pubkey = NULL;
2165                 wpabuf_free(wps->dh_privkey);
2166                 wps->dh_privkey = NULL;
2167                 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2168                 return -1;
2169         }
2170
2171         if (dev_pw) {
2172                 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2173                                            wpabuf_head(dev_pw),
2174                                            wpabuf_len(dev_pw));
2175         }
2176         return wpas_wps_start_dev_pw(wpa_s, bssid, dev_pw ? pw : NULL,
2177                                      p2p_group, dev_pw_id, peer_pubkey_hash,
2178                                      ssid, ssid_len);
2179 }
2180
2181
2182 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2183                              struct wps_parse_attr *attr)
2184 {
2185         wpa_s->wps_ap_channel = 0;
2186
2187         /*
2188          * Disable existing networks temporarily to allow the newly learned
2189          * credential to be preferred. Enable the temporarily disabled networks
2190          * after 10 seconds.
2191          */
2192         wpas_wps_temp_disable(wpa_s, NULL);
2193         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2194                                NULL);
2195
2196         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2197                 return -1;
2198
2199         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2200                 return 0;
2201
2202         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2203                    "based on the received credential added");
2204         wpa_s->normal_scans = 0;
2205         wpa_supplicant_reinit_autoscan(wpa_s);
2206         if (wpa_s->wps_ap_channel) {
2207                 u16 chan = wpa_s->wps_ap_channel;
2208                 int freq = 0;
2209
2210                 if (chan >= 1 && chan <= 13)
2211                         freq = 2407 + 5 * chan;
2212                 else if (chan == 14)
2213                         freq = 2484;
2214                 else if (chan >= 30)
2215                         freq = 5000 + 5 * chan;
2216
2217                 if (freq) {
2218                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2219                                    "AP channel %u -> %u MHz", chan, freq);
2220                         wpa_s->after_wps = 5;
2221                         wpa_s->wps_freq = freq;
2222                 }
2223         }
2224         wpa_s->disconnected = 0;
2225         wpa_s->reassociate = 1;
2226
2227         wpa_supplicant_cancel_sched_scan(wpa_s);
2228         wpa_supplicant_req_scan(wpa_s, 0, 0);
2229
2230         return 0;
2231 }
2232
2233
2234 #ifdef CONFIG_WPS_ER
2235 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2236                                            struct wps_parse_attr *attr)
2237 {
2238         return wps_registrar_add_nfc_password_token(
2239                 wpa_s->wps->registrar, attr->oob_dev_password,
2240                 attr->oob_dev_password_len);
2241 }
2242 #endif /* CONFIG_WPS_ER */
2243
2244
2245 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2246                                     const struct wpabuf *wps)
2247 {
2248         struct wps_parse_attr attr;
2249
2250         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2251
2252         if (wps_parse_msg(wps, &attr)) {
2253                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2254                 return -1;
2255         }
2256
2257         if (attr.num_cred)
2258                 return wpas_wps_use_cred(wpa_s, &attr);
2259
2260 #ifdef CONFIG_WPS_ER
2261         if (attr.oob_dev_password)
2262                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2263 #endif /* CONFIG_WPS_ER */
2264
2265         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2266         return -1;
2267 }
2268
2269
2270 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2271                           const struct wpabuf *data)
2272 {
2273         const struct wpabuf *wps = data;
2274         struct wpabuf *tmp = NULL;
2275         int ret;
2276
2277         if (wpabuf_len(data) < 4)
2278                 return -1;
2279
2280         if (*wpabuf_head_u8(data) != 0x10) {
2281                 /* Assume this contains full NDEF record */
2282                 tmp = ndef_parse_wifi(data);
2283                 if (tmp == NULL) {
2284 #ifdef CONFIG_P2P
2285                         tmp = ndef_parse_p2p(data);
2286                         if (tmp) {
2287                                 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp);
2288                                 wpabuf_free(tmp);
2289                                 return ret;
2290                         }
2291 #endif /* CONFIG_P2P */
2292                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2293                         return -1;
2294                 }
2295                 wps = tmp;
2296         }
2297
2298         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2299         wpabuf_free(tmp);
2300         return ret;
2301 }
2302
2303
2304 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2305                                           int ndef)
2306 {
2307         struct wpabuf *ret;
2308
2309         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2310             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2311                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2312                 return NULL;
2313
2314         ret = wps_build_nfc_handover_req(wpa_s->wps,
2315                                          wpa_s->conf->wps_nfc_dh_pubkey);
2316
2317         if (ndef && ret) {
2318                 struct wpabuf *tmp;
2319                 tmp = ndef_build_wifi(ret);
2320                 wpabuf_free(ret);
2321                 if (tmp == NULL)
2322                         return NULL;
2323                 ret = tmp;
2324         }
2325
2326         return ret;
2327 }
2328
2329
2330 #ifdef CONFIG_WPS_NFC
2331
2332 static struct wpabuf *
2333 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2334                              const char *uuid)
2335 {
2336 #ifdef CONFIG_WPS_ER
2337         struct wpabuf *ret;
2338         u8 u[UUID_LEN], *use_uuid = NULL;
2339         u8 addr[ETH_ALEN], *use_addr = NULL;
2340
2341         if (wpa_s->wps == NULL)
2342                 return NULL;
2343
2344         if (uuid == NULL)
2345                 return NULL;
2346         if (uuid_str2bin(uuid, u) == 0)
2347                 use_uuid = u;
2348         else if (hwaddr_aton(uuid, addr) == 0)
2349                 use_addr = addr;
2350         else
2351                 return NULL;
2352
2353         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2354                 struct wps_context *wps = wpa_s->wps;
2355                 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2356                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2357                         return NULL;
2358
2359                 wpas_wps_nfc_clear(wps);
2360                 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2361                 wps->ap_nfc_dh_pubkey =
2362                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2363                 wps->ap_nfc_dh_privkey =
2364                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2365                 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2366                         wpas_wps_nfc_clear(wps);
2367                         return NULL;
2368                 }
2369         }
2370
2371         ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2372                                       use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2373         if (ndef && ret) {
2374                 struct wpabuf *tmp;
2375                 tmp = ndef_build_wifi(ret);
2376                 wpabuf_free(ret);
2377                 if (tmp == NULL)
2378                         return NULL;
2379                 ret = tmp;
2380         }
2381
2382         return ret;
2383 #else /* CONFIG_WPS_ER */
2384         return NULL;
2385 #endif /* CONFIG_WPS_ER */
2386 }
2387 #endif /* CONFIG_WPS_NFC */
2388
2389
2390 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2391                                           int ndef, int cr, const char *uuid)
2392 {
2393         struct wpabuf *ret;
2394         if (!cr)
2395                 return NULL;
2396         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2397         if (ret)
2398                 return ret;
2399         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2400 }
2401
2402
2403 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2404                                  const struct wpabuf *data)
2405 {
2406         /* TODO */
2407         return -1;
2408 }
2409
2410
2411 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2412                                  const struct wpabuf *data)
2413 {
2414         struct wpabuf *wps;
2415         int ret = -1;
2416         u16 wsc_len;
2417         const u8 *pos;
2418         struct wpabuf msg;
2419         struct wps_parse_attr attr;
2420         u16 dev_pw_id;
2421
2422         wps = ndef_parse_wifi(data);
2423         if (wps == NULL)
2424                 return -1;
2425         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2426                    "payload from NFC connection handover");
2427         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2428         if (wpabuf_len(wps) < 2) {
2429                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2430                            "Message");
2431                 goto out;
2432         }
2433         pos = wpabuf_head(wps);
2434         wsc_len = WPA_GET_BE16(pos);
2435         if (wsc_len > wpabuf_len(wps) - 2) {
2436                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2437                            "in Wi-Fi Handover Select Message", wsc_len);
2438                 goto out;
2439         }
2440         pos += 2;
2441
2442         wpa_hexdump(MSG_DEBUG,
2443                     "WPS: WSC attributes in Wi-Fi Handover Select Message",
2444                     pos, wsc_len);
2445         if (wsc_len < wpabuf_len(wps) - 2) {
2446                 wpa_hexdump(MSG_DEBUG,
2447                             "WPS: Ignore extra data after WSC attributes",
2448                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2449         }
2450
2451         wpabuf_set(&msg, pos, wsc_len);
2452         ret = wps_parse_msg(&msg, &attr);
2453         if (ret < 0) {
2454                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2455                            "Wi-Fi Handover Select Message");
2456                 goto out;
2457         }
2458
2459         if (attr.oob_dev_password == NULL ||
2460             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2461                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2462                            "included in Wi-Fi Handover Select Message");
2463                 ret = -1;
2464                 goto out;
2465         }
2466
2467         if (attr.ssid == NULL) {
2468                 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2469                            "Select Message");
2470                 ret = -1;
2471                 goto out;
2472         }
2473
2474         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2475
2476         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2477                     attr.oob_dev_password, attr.oob_dev_password_len);
2478         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2479                                  WPS_OOB_PUBKEY_HASH_LEN);
2480         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2481                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2482                            "%u in Wi-Fi Handover Select Message", dev_pw_id);
2483                 ret = -1;
2484                 goto out;
2485         }
2486         wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2487                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2488
2489         ret = wpas_wps_start_nfc(wpa_s, NULL, NULL, dev_pw_id, 0,
2490                                  attr.oob_dev_password,
2491                                  attr.ssid, attr.ssid_len);
2492
2493 out:
2494         wpabuf_free(wps);
2495         return ret;
2496 }
2497
2498
2499 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2500                                  const struct wpabuf *req,
2501                                  const struct wpabuf *sel)
2502 {
2503         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2504         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2505         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2506         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2507 }
2508
2509
2510 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2511                                     const struct wpabuf *req,
2512                                     const struct wpabuf *sel)
2513 {
2514         struct wpabuf *wps;
2515         int ret = -1;
2516         u16 wsc_len;
2517         const u8 *pos;
2518         struct wpabuf msg;
2519         struct wps_parse_attr attr;
2520         u16 dev_pw_id;
2521
2522         /*
2523          * Enrollee/station is always initiator of the NFC connection handover,
2524          * so use the request message here to find Enrollee public key hash.
2525          */
2526         wps = ndef_parse_wifi(req);
2527         if (wps == NULL)
2528                 return -1;
2529         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2530                    "payload from NFC connection handover");
2531         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2532         if (wpabuf_len(wps) < 2) {
2533                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2534                            "Message");
2535                 goto out;
2536         }
2537         pos = wpabuf_head(wps);
2538         wsc_len = WPA_GET_BE16(pos);
2539         if (wsc_len > wpabuf_len(wps) - 2) {
2540                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2541                            "in rt Wi-Fi Handover Request Message", wsc_len);
2542                 goto out;
2543         }
2544         pos += 2;
2545
2546         wpa_hexdump(MSG_DEBUG,
2547                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
2548                     pos, wsc_len);
2549         if (wsc_len < wpabuf_len(wps) - 2) {
2550                 wpa_hexdump(MSG_DEBUG,
2551                             "WPS: Ignore extra data after WSC attributes",
2552                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2553         }
2554
2555         wpabuf_set(&msg, pos, wsc_len);
2556         ret = wps_parse_msg(&msg, &attr);
2557         if (ret < 0) {
2558                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2559                            "Wi-Fi Handover Request Message");
2560                 goto out;
2561         }
2562
2563         if (attr.oob_dev_password == NULL ||
2564             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2565                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2566                            "included in Wi-Fi Handover Request Message");
2567                 ret = -1;
2568                 goto out;
2569         }
2570
2571         if (attr.uuid_e == NULL) {
2572                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2573                            "Handover Request Message");
2574                 ret = -1;
2575                 goto out;
2576         }
2577
2578         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2579
2580         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2581                     attr.oob_dev_password, attr.oob_dev_password_len);
2582         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2583                                  WPS_OOB_PUBKEY_HASH_LEN);
2584         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2585                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2586                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
2587                 ret = -1;
2588                 goto out;
2589         }
2590         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2591                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2592
2593         ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2594                                              attr.oob_dev_password,
2595                                              DEV_PW_NFC_CONNECTION_HANDOVER,
2596                                              NULL, 0, 1);
2597
2598 out:
2599         wpabuf_free(wps);
2600         return ret;
2601 }
2602
2603 #endif /* CONFIG_WPS_NFC */
2604
2605
2606 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2607 {
2608         size_t i;
2609         struct os_reltime now;
2610
2611         if (wpa_debug_level > MSG_DEBUG)
2612                 return;
2613
2614         if (wpa_s->wps_ap == NULL)
2615                 return;
2616
2617         os_get_reltime(&now);
2618
2619         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2620                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2621                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2622
2623                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2624                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2625                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2626                            ap->last_attempt.sec > 0 ?
2627                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2628                            e ? e->count : 0);
2629         }
2630 }
2631
2632
2633 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2634                                                  const u8 *bssid)
2635 {
2636         size_t i;
2637
2638         if (wpa_s->wps_ap == NULL)
2639                 return NULL;
2640
2641         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2642                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2643                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2644                         return ap;
2645         }
2646
2647         return NULL;
2648 }
2649
2650
2651 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2652                                         struct wpa_scan_res *res)
2653 {
2654         struct wpabuf *wps;
2655         enum wps_ap_info_type type;
2656         struct wps_ap_info *ap;
2657         int r;
2658
2659         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2660                 return;
2661
2662         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2663         if (wps == NULL)
2664                 return;
2665
2666         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2667         if (r == 2)
2668                 type = WPS_AP_SEL_REG_OUR;
2669         else if (r == 1)
2670                 type = WPS_AP_SEL_REG;
2671         else
2672                 type = WPS_AP_NOT_SEL_REG;
2673
2674         wpabuf_free(wps);
2675
2676         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2677         if (ap) {
2678                 if (ap->type != type) {
2679                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2680                                    " changed type %d -> %d",
2681                                    MAC2STR(res->bssid), ap->type, type);
2682                         ap->type = type;
2683                         if (type != WPS_AP_NOT_SEL_REG)
2684                                 wpa_blacklist_del(wpa_s, ap->bssid);
2685                 }
2686                 return;
2687         }
2688
2689         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2690                               sizeof(struct wps_ap_info));
2691         if (ap == NULL)
2692                 return;
2693
2694         wpa_s->wps_ap = ap;
2695         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2696         wpa_s->num_wps_ap++;
2697
2698         os_memset(ap, 0, sizeof(*ap));
2699         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2700         ap->type = type;
2701         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2702                    MAC2STR(ap->bssid), ap->type);
2703 }
2704
2705
2706 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2707                              struct wpa_scan_results *scan_res)
2708 {
2709         size_t i;
2710
2711         for (i = 0; i < scan_res->num; i++)
2712                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2713
2714         wpas_wps_dump_ap_info(wpa_s);
2715 }
2716
2717
2718 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2719 {
2720         struct wps_ap_info *ap;
2721
2722         wpa_s->after_wps = 0;
2723
2724         if (!wpa_s->wps_ap_iter)
2725                 return;
2726         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2727         if (ap == NULL)
2728                 return;
2729         ap->tries++;
2730         os_get_reltime(&ap->last_attempt);
2731 }