wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2012, 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         if (!wpa_s->wps_success &&
  58             wpa_s->current_ssid &&
  59             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  60                 const u8 *bssid = wpa_s->bssid;
  61                 if (is_zero_ether_addr(bssid))
  62                         bssid = wpa_s->pending_bssid;
  63
  64                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  65                            " did not succeed - continue trying to find "
  66                            "suitable AP", MAC2STR(bssid));
  67                 wpa_blacklist_add(wpa_s, bssid);
  68
  69                 wpa_supplicant_deauthenticate(wpa_s,
  70                                               WLAN_REASON_DEAUTH_LEAVING);
  71                 wpa_s->reassociate = 1;
  72                 wpa_supplicant_req_scan(wpa_s,
  73                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  74                 wpa_s->blacklist_cleared = 0;
  75                 return 1;
  76         }
  77
  78         wpas_wps_clear_ap_info(wpa_s);
  79         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  80         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  81                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  82
  83         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  84             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  85                 int disabled = wpa_s->current_ssid->disabled;
  86                 unsigned int freq = wpa_s->assoc_freq;
  87                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  88                            "try to associate with the received credential "
  89                            "(freq=%u)", freq);
  90                 wpa_supplicant_deauthenticate(wpa_s,
  91                                               WLAN_REASON_DEAUTH_LEAVING);
  92                 if (disabled) {
  93                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  94                                    "disabled - wait for user to enable");
  95                         return 1;
  96                 }
  97                 wpa_s->after_wps = 5;
  98                 wpa_s->wps_freq = freq;
  99                 wpa_s->normal_scans = 0;
 100                 wpa_s->reassociate = 1;
 101                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 102                 return 1;
 103         }
 104
 105         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 106                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 107                            "for external credential processing");
 108                 wpas_clear_wps(wpa_s);
 109                 wpa_supplicant_deauthenticate(wpa_s,
 110                                               WLAN_REASON_DEAUTH_LEAVING);
 111                 return 1;
 112         }
 113
 114         return 0;
 115 }
 116
 117
 118 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 119                                          struct wpa_ssid *ssid,
 120                                          const struct wps_credential *cred)
 121 {
 122         struct wpa_driver_capa capa;
 123         struct wpa_bss *bss;
 124         const u8 *ie;
 125         struct wpa_ie_data adv;
 126         int wpa2 = 0, ccmp = 0;
 127
 128         /*
 129          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 130          * case they are configured for mixed mode operation (WPA+WPA2 and
 131          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 132          * actually supports stronger security and select that if the client
 133          * has support for it, too.
 134          */
 135
 136         if (wpa_drv_get_capa(wpa_s, &capa))
 137                 return; /* Unknown what driver supports */
 138
 139         if (ssid->ssid == NULL)
 140                 return;
 141         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 142         if (bss == NULL) {
 143                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 144                            "table - use credential as-is");
 145                 return;
 146         }
 147
 148         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 149
 150         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 151         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 152                 wpa2 = 1;
 153                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 154                         ccmp = 1;
 155         } else {
 156                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 157                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 158                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 159                         ccmp = 1;
 160         }
 161
 162         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 163             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 164                 /*
 165                  * TODO: This could be the initial AP configuration and the
 166                  * Beacon contents could change shortly. Should request a new
 167                  * scan and delay addition of the network until the updated
 168                  * scan results are available.
 169                  */
 170                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 171                            "support - use credential as-is");
 172                 return;
 173         }
 174
 175         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 176             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 177             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 178                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 179                            "based on scan results");
 180                 if (wpa_s->conf->ap_scan == 1)
 181                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 182                 else
 183                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 184         }
 185
 186         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 187             (ssid->proto & WPA_PROTO_WPA) &&
 188             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 189                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 190                            "based on scan results");
 191                 if (wpa_s->conf->ap_scan == 1)
 192                         ssid->proto |= WPA_PROTO_RSN;
 193                 else
 194                         ssid->proto = WPA_PROTO_RSN;
 195         }
 196 }
 197
 198
 199 static int wpa_supplicant_wps_cred(void *ctx,
 200                                    const struct wps_credential *cred)
 201 {
 202         struct wpa_supplicant *wpa_s = ctx;
 203         struct wpa_ssid *ssid = wpa_s->current_ssid;
 204         u8 key_idx = 0;
 205         u16 auth_type;
 206 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 207         int registrar = 0;
 208 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 209
 210         if ((wpa_s->conf->wps_cred_processing == 1 ||
 211              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 212                 size_t blen = cred->cred_attr_len * 2 + 1;
 213                 char *buf = os_malloc(blen);
 214                 if (buf) {
 215                         wpa_snprintf_hex(buf, blen,
 216                                          cred->cred_attr, cred->cred_attr_len);
 217                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 218                                 WPS_EVENT_CRED_RECEIVED, buf);
 219                         os_free(buf);
 220                 }
 221
 222                 wpas_notify_wps_credential(wpa_s, cred);
 223         } else
 224                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 225
 226         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 227                         cred->cred_attr, cred->cred_attr_len);
 228
 229         if (wpa_s->conf->wps_cred_processing == 1)
 230                 return 0;
 231
 232         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 233         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 234                    cred->auth_type);
 235         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 236         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 237         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 238                         cred->key, cred->key_len);
 239         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 240                    MAC2STR(cred->mac_addr));
 241
 242         auth_type = cred->auth_type;
 243         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 244                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 245                            "auth_type into WPA2PSK");
 246                 auth_type = WPS_AUTH_WPA2PSK;
 247         }
 248
 249         if (auth_type != WPS_AUTH_OPEN &&
 250             auth_type != WPS_AUTH_SHARED &&
 251             auth_type != WPS_AUTH_WPAPSK &&
 252             auth_type != WPS_AUTH_WPA2PSK) {
 253                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 254                            "unsupported authentication type 0x%x",
 255                            auth_type);
 256                 return 0;
 257         }
 258
 259         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 260                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 261                            "on the received credential");
 262 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 263                 if (ssid->eap.identity &&
 264                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 265                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 266                               WSC_ID_REGISTRAR_LEN) == 0)
 267                         registrar = 1;
 268 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 269                 os_free(ssid->eap.identity);
 270                 ssid->eap.identity = NULL;
 271                 ssid->eap.identity_len = 0;
 272                 os_free(ssid->eap.phase1);
 273                 ssid->eap.phase1 = NULL;
 274                 os_free(ssid->eap.eap_methods);
 275                 ssid->eap.eap_methods = NULL;
 276                 if (!ssid->p2p_group) {
 277                         ssid->temporary = 0;
 278                         ssid->bssid_set = 0;
 279                 }
 280                 ssid->disabled_until.sec = 0;
 281                 ssid->disabled_until.usec = 0;
 282                 ssid->auth_failures = 0;
 283         } else {
 284                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 285                            "received credential");
 286                 ssid = wpa_config_add_network(wpa_s->conf);
 287                 if (ssid == NULL)
 288                         return -1;
 289                 wpas_notify_network_added(wpa_s, ssid);
 290         }
 291
 292         wpa_config_set_network_defaults(ssid);
 293
 294         os_free(ssid->ssid);
 295         ssid->ssid = os_malloc(cred->ssid_len);
 296         if (ssid->ssid) {
 297                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 298                 ssid->ssid_len = cred->ssid_len;
 299         }
 300
 301         switch (cred->encr_type) {
 302         case WPS_ENCR_NONE:
 303                 break;
 304         case WPS_ENCR_WEP:
 305                 if (cred->key_len <= 0)
 306                         break;
 307                 if (cred->key_len != 5 && cred->key_len != 13 &&
 308                     cred->key_len != 10 && cred->key_len != 26) {
 309                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 310                                    "%lu", (unsigned long) cred->key_len);
 311                         return -1;
 312                 }
 313                 if (cred->key_idx > NUM_WEP_KEYS) {
 314                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 315                                    cred->key_idx);
 316                         return -1;
 317                 }
 318                 if (cred->key_idx)
 319                         key_idx = cred->key_idx - 1;
 320                 if (cred->key_len == 10 || cred->key_len == 26) {
 321                         if (hexstr2bin((char *) cred->key,
 322                                        ssid->wep_key[key_idx],
 323                                        cred->key_len / 2) < 0) {
 324                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 325                                            "%d", key_idx);
 326                                 return -1;
 327                         }
 328                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 329                 } else {
 330                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 331                                   cred->key_len);
 332                         ssid->wep_key_len[key_idx] = cred->key_len;
 333                 }
 334                 ssid->wep_tx_keyidx = key_idx;
 335                 break;
 336         case WPS_ENCR_TKIP:
 337                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 338                 break;
 339         case WPS_ENCR_AES:
 340                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 341                 break;
 342         }
 343
 344         switch (auth_type) {
 345         case WPS_AUTH_OPEN:
 346                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 347                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 348                 ssid->proto = 0;
 349 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 350                 if (registrar) {
 351                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 352                                 "id=%d - Credentials for an open "
 353                                 "network disabled by default - use "
 354                                 "'select_network %d' to enable",
 355                                 ssid->id, ssid->id);
 356                         ssid->disabled = 1;
 357                 }
 358 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 359                 break;
 360         case WPS_AUTH_SHARED:
 361                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 362                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 363                 ssid->proto = 0;
 364                 break;
 365         case WPS_AUTH_WPAPSK:
 366                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 367                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 368                 ssid->proto = WPA_PROTO_WPA;
 369                 break;
 370         case WPS_AUTH_WPA2PSK:
 371                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 372                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 373                 ssid->proto = WPA_PROTO_RSN;
 374                 break;
 375         }
 376
 377         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 378                 if (cred->key_len == 2 * PMK_LEN) {
 379                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 380                                        PMK_LEN)) {
 381                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 382                                            "Key");
 383                                 return -1;
 384                         }
 385                         ssid->psk_set = 1;
 386                         ssid->export_keys = 1;
 387                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 388                         os_free(ssid->passphrase);
 389                         ssid->passphrase = os_malloc(cred->key_len + 1);
 390                         if (ssid->passphrase == NULL)
 391                                 return -1;
 392                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 393                         ssid->passphrase[cred->key_len] = '\0';
 394                         wpa_config_update_psk(ssid);
 395                         ssid->export_keys = 1;
 396                 } else {
 397                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 398                                    "length %lu",
 399                                    (unsigned long) cred->key_len);
 400                         return -1;
 401                 }
 402         }
 403
 404         wpas_wps_security_workaround(wpa_s, ssid, cred);
 405
 406 #ifndef CONFIG_NO_CONFIG_WRITE
 407         if (wpa_s->conf->update_config &&
 408             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 409                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 410                 return -1;
 411         }
 412 #endif /* CONFIG_NO_CONFIG_WRITE */
 413
 414         return 0;
 415 }
 416
 417
 418 #ifdef CONFIG_P2P
 419 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 420 {
 421         struct wpa_supplicant *wpa_s = eloop_ctx;
 422         wpas_p2p_notif_pbc_overlap(wpa_s);
 423 }
 424 #endif /* CONFIG_P2P */
 425
 426
 427 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 428                                          struct wps_event_m2d *m2d)
 429 {
 430         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 431                 "dev_password_id=%d config_error=%d",
 432                 m2d->dev_password_id, m2d->config_error);
 433         wpas_notify_wps_event_m2d(wpa_s, m2d);
 434 #ifdef CONFIG_P2P
 435         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 436                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 437                         "dev_password_id=%d config_error=%d",
 438                         m2d->dev_password_id, m2d->config_error);
 439         }
 440         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 441                 /*
 442                  * Notify P2P from eloop timeout to avoid issues with the
 443                  * interface getting removed while processing a message.
 444                  */
 445                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 446                                        NULL);
 447         }
 448 #endif /* CONFIG_P2P */
 449 }
 450
 451
 452 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 453         "No Error", /* WPS_EI_NO_ERROR */
 454         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 455         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 456 };
 457
 458 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 459                                           struct wps_event_fail *fail)
 460 {
 461         if (fail->error_indication > 0 &&
 462             fail->error_indication < NUM_WPS_EI_VALUES) {
 463                 wpa_msg(wpa_s, MSG_INFO,
 464                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 465                         fail->msg, fail->config_error, fail->error_indication,
 466                         wps_event_fail_reason[fail->error_indication]);
 467                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 468                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 469                                 "msg=%d config_error=%d reason=%d (%s)",
 470                                 fail->msg, fail->config_error,
 471                                 fail->error_indication,
 472                                 wps_event_fail_reason[fail->error_indication]);
 473         } else {
 474                 wpa_msg(wpa_s, MSG_INFO,
 475                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 476                         fail->msg, fail->config_error);
 477                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 478                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 479                                 "msg=%d config_error=%d",
 480                                 fail->msg, fail->config_error);
 481         }
 482         wpas_clear_wps(wpa_s);
 483         wpas_notify_wps_event_fail(wpa_s, fail);
 484 #ifdef CONFIG_P2P
 485         wpas_p2p_wps_failed(wpa_s, fail);
 486 #endif /* CONFIG_P2P */
 487 }
 488
 489
 490 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 491
 492 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 493 {
 494         struct wpa_ssid *ssid;
 495
 496         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 497
 498         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 499                 if (ssid->disabled_for_connect && ssid->disabled) {
 500                         ssid->disabled_for_connect = 0;
 501                         ssid->disabled = 0;
 502                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 503                 }
 504         }
 505 }
 506
 507
 508 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 509 {
 510         struct wpa_supplicant *wpa_s = eloop_ctx;
 511         /* Enable the networks disabled during wpas_wps_reassoc */
 512         wpas_wps_reenable_networks(wpa_s);
 513 }
 514
 515
 516 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 517 {
 518         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 519         wpa_s->wps_success = 1;
 520         wpas_notify_wps_event_success(wpa_s);
 521
 522         /*
 523          * Enable the networks disabled during wpas_wps_reassoc after 10
 524          * seconds. The 10 seconds timer is to allow the data connection to be
 525          * formed before allowing other networks to be selected.
 526          */
 527         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 528                                NULL);
 529
 530 #ifdef CONFIG_P2P
 531         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 532 #endif /* CONFIG_P2P */
 533 }
 534
 535
 536 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 537                                                struct wps_event_er_ap *ap)
 538 {
 539         char uuid_str[100];
 540         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 541
 542         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 543         if (ap->pri_dev_type)
 544                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 545                                      sizeof(dev_type));
 546         else
 547                 dev_type[0] = '\0';
 548
 549         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 550                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 551                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 552                 ap->friendly_name ? ap->friendly_name : "",
 553                 ap->manufacturer ? ap->manufacturer : "",
 554                 ap->model_description ? ap->model_description : "",
 555                 ap->model_name ? ap->model_name : "",
 556                 ap->manufacturer_url ? ap->manufacturer_url : "",
 557                 ap->model_url ? ap->model_url : "");
 558 }
 559
 560
 561 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 562                                                   struct wps_event_er_ap *ap)
 563 {
 564         char uuid_str[100];
 565         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 566         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 567 }
 568
 569
 570 static void wpa_supplicant_wps_event_er_enrollee_add(
 571         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 572 {
 573         char uuid_str[100];
 574         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 575
 576         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 577         if (enrollee->pri_dev_type)
 578                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 579                                      sizeof(dev_type));
 580         else
 581                 dev_type[0] = '\0';
 582
 583         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 584                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 585                 "|%s|%s|%s|%s|%s|",
 586                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 587                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 588                 enrollee->dev_name ? enrollee->dev_name : "",
 589                 enrollee->manufacturer ? enrollee->manufacturer : "",
 590                 enrollee->model_name ? enrollee->model_name : "",
 591                 enrollee->model_number ? enrollee->model_number : "",
 592                 enrollee->serial_number ? enrollee->serial_number : "");
 593 }
 594
 595
 596 static void wpa_supplicant_wps_event_er_enrollee_remove(
 597         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 598 {
 599         char uuid_str[100];
 600         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 601         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 602                 uuid_str, MAC2STR(enrollee->mac_addr));
 603 }
 604
 605
 606 static void wpa_supplicant_wps_event_er_ap_settings(
 607         struct wpa_supplicant *wpa_s,
 608         struct wps_event_er_ap_settings *ap_settings)
 609 {
 610         char uuid_str[100];
 611         char key_str[65];
 612         const struct wps_credential *cred = ap_settings->cred;
 613
 614         key_str[0] = '\0';
 615         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 616                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 617                         os_memcpy(key_str, cred->key, cred->key_len);
 618                         key_str[cred->key_len] = '\0';
 619                 }
 620         }
 621
 622         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 623         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 624         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 625                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 626                      "key=%s",
 627                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 628                      cred->auth_type, cred->encr_type, key_str);
 629 }
 630
 631
 632 static void wpa_supplicant_wps_event_er_set_sel_reg(
 633         struct wpa_supplicant *wpa_s,
 634         struct wps_event_er_set_selected_registrar *ev)
 635 {
 636         char uuid_str[100];
 637
 638         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 639         switch (ev->state) {
 640         case WPS_ER_SET_SEL_REG_START:
 641                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 642                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 643                         "sel_reg_config_methods=0x%x",
 644                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 645                         ev->sel_reg_config_methods);
 646                 break;
 647         case WPS_ER_SET_SEL_REG_DONE:
 648                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 649                         "uuid=%s state=DONE", uuid_str);
 650                 break;
 651         case WPS_ER_SET_SEL_REG_FAILED:
 652                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 653                         "uuid=%s state=FAILED", uuid_str);
 654                 break;
 655         }
 656 }
 657
 658
 659 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 660                                      union wps_event_data *data)
 661 {
 662         struct wpa_supplicant *wpa_s = ctx;
 663         switch (event) {
 664         case WPS_EV_M2D:
 665                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 666                 break;
 667         case WPS_EV_FAIL:
 668                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 669                 break;
 670         case WPS_EV_SUCCESS:
 671                 wpa_supplicant_wps_event_success(wpa_s);
 672                 break;
 673         case WPS_EV_PWD_AUTH_FAIL:
 674 #ifdef CONFIG_AP
 675                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 676                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 677 #endif /* CONFIG_AP */
 678                 break;
 679         case WPS_EV_PBC_OVERLAP:
 680                 break;
 681         case WPS_EV_PBC_TIMEOUT:
 682                 break;
 683         case WPS_EV_ER_AP_ADD:
 684                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 685                 break;
 686         case WPS_EV_ER_AP_REMOVE:
 687                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 688                 break;
 689         case WPS_EV_ER_ENROLLEE_ADD:
 690                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 691                                                          &data->enrollee);
 692                 break;
 693         case WPS_EV_ER_ENROLLEE_REMOVE:
 694                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 695                                                             &data->enrollee);
 696                 break;
 697         case WPS_EV_ER_AP_SETTINGS:
 698                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 699                                                         &data->ap_settings);
 700                 break;
 701         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 702                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 703                                                         &data->set_sel_reg);
 704                 break;
 705         case WPS_EV_AP_PIN_SUCCESS:
 706                 break;
 707         }
 708 }
 709
 710
 711 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 712 {
 713         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 714             eap_is_wps_pin_enrollee(&ssid->eap))
 715                 return WPS_REQ_ENROLLEE;
 716         else
 717                 return WPS_REQ_REGISTRAR;
 718 }
 719
 720
 721 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 722 {
 723         int id;
 724         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 725
 726         prev_current = wpa_s->current_ssid;
 727
 728         /* Enable the networks disabled during wpas_wps_reassoc */
 729         wpas_wps_reenable_networks(wpa_s);
 730
 731         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 732
 733         /* Remove any existing WPS network from configuration */
 734         ssid = wpa_s->conf->ssid;
 735         while (ssid) {
 736                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 737                         if (ssid == wpa_s->current_ssid) {
 738                                 wpa_s->current_ssid = NULL;
 739                                 if (ssid != NULL)
 740                                         wpas_notify_network_changed(wpa_s);
 741                         }
 742                         id = ssid->id;
 743                         remove_ssid = ssid;
 744                 } else
 745                         id = -1;
 746                 ssid = ssid->next;
 747                 if (id >= 0) {
 748                         if (prev_current == remove_ssid) {
 749                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 750                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 751                                                        NULL);
 752                         }
 753                         wpas_notify_network_removed(wpa_s, remove_ssid);
 754                         wpa_config_remove_network(wpa_s->conf, id);
 755                 }
 756         }
 757
 758         wpas_wps_clear_ap_info(wpa_s);
 759 }
 760
 761
 762 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 763 {
 764         struct wpa_supplicant *wpa_s = eloop_ctx;
 765         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 766                 "out");
 767         wpas_clear_wps(wpa_s);
 768 }
 769
 770
 771 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 772                                               int registrar, const u8 *bssid)
 773 {
 774         struct wpa_ssid *ssid;
 775
 776         ssid = wpa_config_add_network(wpa_s->conf);
 777         if (ssid == NULL)
 778                 return NULL;
 779         wpas_notify_network_added(wpa_s, ssid);
 780         wpa_config_set_network_defaults(ssid);
 781         ssid->temporary = 1;
 782         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 783             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 784             wpa_config_set(ssid, "identity", registrar ?
 785                            "\"" WSC_ID_REGISTRAR "\"" :
 786                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 787                 wpas_notify_network_removed(wpa_s, ssid);
 788                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 789                 return NULL;
 790         }
 791
 792         if (bssid) {
 793 #ifndef CONFIG_P2P
 794                 struct wpa_bss *bss;
 795                 int count = 0;
 796 #endif /* CONFIG_P2P */
 797
 798                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 799                 ssid->bssid_set = 1;
 800
 801                 /*
 802                  * Note: With P2P, the SSID may change at the time the WPS
 803                  * provisioning is started, so better not filter the AP based
 804                  * on the current SSID in the scan results.
 805                  */
 806 #ifndef CONFIG_P2P
 807                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 808                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 809                                 continue;
 810
 811                         os_free(ssid->ssid);
 812                         ssid->ssid = os_malloc(bss->ssid_len);
 813                         if (ssid->ssid == NULL)
 814                                 break;
 815                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 816                         ssid->ssid_len = bss->ssid_len;
 817                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 818                                           "scan results",
 819                                           ssid->ssid, ssid->ssid_len);
 820                         count++;
 821                 }
 822
 823                 if (count > 1) {
 824                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 825                                    "for the AP; use wildcard");
 826                         os_free(ssid->ssid);
 827                         ssid->ssid = NULL;
 828                         ssid->ssid_len = 0;
 829                 }
 830 #endif /* CONFIG_P2P */
 831         }
 832
 833         return ssid;
 834 }
 835
 836
 837 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 838                              struct wpa_ssid *selected, const u8 *bssid)
 839 {
 840         struct wpa_ssid *ssid;
 841         struct wpa_bss *bss;
 842
 843         wpa_s->known_wps_freq = 0;
 844         if (bssid) {
 845                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 846                 if (bss && bss->freq > 0) {
 847                         wpa_s->known_wps_freq = 1;
 848                         wpa_s->wps_freq = bss->freq;
 849                 }
 850         }
 851
 852         if (wpa_s->current_ssid)
 853                 wpa_supplicant_deauthenticate(
 854                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 855
 856         /* Mark all other networks disabled and trigger reassociation */
 857         ssid = wpa_s->conf->ssid;
 858         while (ssid) {
 859                 int was_disabled = ssid->disabled;
 860                 ssid->disabled_for_connect = 0;
 861                 /*
 862                  * In case the network object corresponds to a persistent group
 863                  * then do not send out network disabled signal. In addition,
 864                  * do not change disabled status of persistent network objects
 865                  * from 2 to 1 should we connect to another network.
 866                  */
 867                 if (was_disabled != 2) {
 868                         ssid->disabled = ssid != selected;
 869                         if (was_disabled != ssid->disabled) {
 870                                 if (ssid->disabled)
 871                                         ssid->disabled_for_connect = 1;
 872                                 wpas_notify_network_enabled_changed(wpa_s,
 873                                                                     ssid);
 874                         }
 875                 }
 876                 ssid = ssid->next;
 877         }
 878         wpa_s->disconnected = 0;
 879         wpa_s->reassociate = 1;
 880         wpa_s->scan_runs = 0;
 881         wpa_s->normal_scans = 0;
 882         wpa_s->wps_success = 0;
 883         wpa_s->blacklist_cleared = 0;
 884         wpa_supplicant_req_scan(wpa_s, 0, 0);
 885 }
 886
 887
 888 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 889                        int p2p_group)
 890 {
 891         struct wpa_ssid *ssid;
 892         wpas_clear_wps(wpa_s);
 893         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 894         if (ssid == NULL)
 895                 return -1;
 896         ssid->temporary = 1;
 897         ssid->p2p_group = p2p_group;
 898 #ifdef CONFIG_P2P
 899         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 900                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 901                 if (ssid->ssid) {
 902                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 903                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 904                                   ssid->ssid_len);
 905                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 906                                           "SSID", ssid->ssid, ssid->ssid_len);
 907                 }
 908         }
 909 #endif /* CONFIG_P2P */
 910         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 911         if (wpa_s->wps_fragment_size)
 912                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 913         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 914                                wpa_s, NULL);
 915         wpas_wps_reassoc(wpa_s, ssid, bssid);
 916         return 0;
 917 }
 918
 919
 920 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 921                        const char *pin, int p2p_group, u16 dev_pw_id)
 922 {
 923         struct wpa_ssid *ssid;
 924         char val[128];
 925         unsigned int rpin = 0;
 926
 927         wpas_clear_wps(wpa_s);
 928         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 929         if (ssid == NULL)
 930                 return -1;
 931         ssid->temporary = 1;
 932         ssid->p2p_group = p2p_group;
 933 #ifdef CONFIG_P2P
 934         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 935                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 936                 if (ssid->ssid) {
 937                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 938                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 939                                   ssid->ssid_len);
 940                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 941                                           "SSID", ssid->ssid, ssid->ssid_len);
 942                 }
 943         }
 944 #endif /* CONFIG_P2P */
 945         if (pin)
 946                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 947                             pin, dev_pw_id);
 948         else {
 949                 rpin = wps_generate_pin();
 950                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 951                             rpin, dev_pw_id);
 952         }
 953         wpa_config_set(ssid, "phase1", val, 0);
 954         if (wpa_s->wps_fragment_size)
 955                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 956         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 957                                wpa_s, NULL);
 958         wpa_s->wps_ap_iter = 1;
 959         wpas_wps_reassoc(wpa_s, ssid, bssid);
 960         return rpin;
 961 }
 962
 963
 964 /* Cancel the wps pbc/pin requests */
 965 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 966 {
 967 #ifdef CONFIG_AP
 968         if (wpa_s->ap_iface) {
 969                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 970                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 971         }
 972 #endif /* CONFIG_AP */
 973
 974         if (wpa_s->wpa_state == WPA_SCANNING ||
 975             wpa_s->wpa_state == WPA_DISCONNECTED) {
 976                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 977                 wpa_supplicant_cancel_scan(wpa_s);
 978                 wpas_clear_wps(wpa_s);
 979         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 980                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 981                            "deauthenticate");
 982                 wpa_supplicant_deauthenticate(wpa_s,
 983                                               WLAN_REASON_DEAUTH_LEAVING);
 984                 wpas_clear_wps(wpa_s);
 985         } else {
 986                 wpas_wps_reenable_networks(wpa_s);
 987                 wpas_wps_clear_ap_info(wpa_s);
 988         }
 989
 990         return 0;
 991 }
 992
 993
 994 #ifdef CONFIG_WPS_OOB
 995 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 996                        char *path, char *method, char *name)
 997 {
 998         struct wps_context *wps = wpa_s->wps;
 999         struct oob_device_data *oob_dev;
1000
1001         oob_dev = wps_get_oob_device(device_type);
1002         if (oob_dev == NULL)
1003                 return -1;
1004         oob_dev->device_path = path;
1005         oob_dev->device_name = name;
1006         wps->oob_conf.oob_method = wps_get_oob_method(method);
1007
1008         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
1009                 /*
1010                  * Use pre-configured DH keys in order to be able to write the
1011                  * key hash into the OOB file.
1012                  */
1013                 wpabuf_free(wps->dh_pubkey);
1014                 wpabuf_free(wps->dh_privkey);
1015                 wps->dh_privkey = NULL;
1016                 wps->dh_pubkey = NULL;
1017                 dh5_free(wps->dh_ctx);
1018                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
1019                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1020                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
1021                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1022                                    "Diffie-Hellman handshake");
1023                         return -1;
1024                 }
1025         }
1026
1027         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
1028                 wpas_clear_wps(wpa_s);
1029
1030         if (wps_process_oob(wps, oob_dev, 0) < 0)
1031                 return -1;
1032
1033         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1034              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1035             wpas_wps_start_pin(wpa_s, NULL,
1036                                wpabuf_head(wps->oob_conf.dev_password), 0,
1037                                DEV_PW_DEFAULT) < 0)
1038                         return -1;
1039
1040         return 0;
1041 }
1042 #endif /* CONFIG_WPS_OOB */
1043
1044
1045 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1046                        const char *pin, struct wps_new_ap_settings *settings)
1047 {
1048         struct wpa_ssid *ssid;
1049         char val[200];
1050         char *pos, *end;
1051         int res;
1052
1053         if (!pin)
1054                 return -1;
1055         wpas_clear_wps(wpa_s);
1056         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1057         if (ssid == NULL)
1058                 return -1;
1059         ssid->temporary = 1;
1060         pos = val;
1061         end = pos + sizeof(val);
1062         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1063         if (res < 0 || res >= end - pos)
1064                 return -1;
1065         pos += res;
1066         if (settings) {
1067                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1068                                   "new_encr=%s new_key=%s",
1069                                   settings->ssid_hex, settings->auth,
1070                                   settings->encr, settings->key_hex);
1071                 if (res < 0 || res >= end - pos)
1072                         return -1;
1073                 pos += res;
1074         }
1075         res = os_snprintf(pos, end - pos, "\"");
1076         if (res < 0 || res >= end - pos)
1077                 return -1;
1078         wpa_config_set(ssid, "phase1", val, 0);
1079         if (wpa_s->wps_fragment_size)
1080                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1081         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1082                                wpa_s, NULL);
1083         wpas_wps_reassoc(wpa_s, ssid, bssid);
1084         return 0;
1085 }
1086
1087
1088 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1089                                size_t psk_len)
1090 {
1091         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1092                    "STA " MACSTR, MAC2STR(mac_addr));
1093         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1094
1095         /* TODO */
1096
1097         return 0;
1098 }
1099
1100
1101 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1102                                    const struct wps_device_data *dev)
1103 {
1104         char uuid[40], txt[400];
1105         int len;
1106         char devtype[WPS_DEV_TYPE_BUFSIZE];
1107         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1108                 return;
1109         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1110         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1111                           " [%s|%s|%s|%s|%s|%s]",
1112                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1113                           dev->manufacturer, dev->model_name,
1114                           dev->model_number, dev->serial_number,
1115                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1116                                                sizeof(devtype)));
1117         if (len > 0 && len < (int) sizeof(txt))
1118                 wpa_printf(MSG_INFO, "%s", txt);
1119 }
1120
1121
1122 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1123                                     u16 sel_reg_config_methods)
1124 {
1125 #ifdef CONFIG_WPS_ER
1126         struct wpa_supplicant *wpa_s = ctx;
1127
1128         if (wpa_s->wps_er == NULL)
1129                 return;
1130         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1131                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1132                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1133         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1134                            sel_reg_config_methods);
1135 #endif /* CONFIG_WPS_ER */
1136 }
1137
1138
1139 static u16 wps_fix_config_methods(u16 config_methods)
1140 {
1141 #ifdef CONFIG_WPS2
1142         if ((config_methods &
1143              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1144               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1145                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1146                            "virtual_display for WPS 2.0 compliance");
1147                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1148         }
1149         if ((config_methods &
1150              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1151               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1152                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1153                            "virtual_push_button for WPS 2.0 compliance");
1154                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1155         }
1156 #endif /* CONFIG_WPS2 */
1157
1158         return config_methods;
1159 }
1160
1161
1162 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1163                               struct wps_context *wps)
1164 {
1165         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1166         if (is_nil_uuid(wpa_s->conf->uuid)) {
1167                 struct wpa_supplicant *first;
1168                 first = wpa_s->global->ifaces;
1169                 while (first && first->next)
1170                         first = first->next;
1171                 if (first && first != wpa_s) {
1172                         if (wps != wpa_s->global->ifaces->wps)
1173                                 os_memcpy(wps->uuid,
1174                                           wpa_s->global->ifaces->wps->uuid,
1175                                           WPS_UUID_LEN);
1176                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1177                                     "interface", wps->uuid, WPS_UUID_LEN);
1178                 } else {
1179                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1180                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1181                                     "address", wps->uuid, WPS_UUID_LEN);
1182                 }
1183         } else {
1184                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1185                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1186                             wps->uuid, WPS_UUID_LEN);
1187         }
1188 }
1189
1190
1191 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1192                                        struct wps_context *wps)
1193 {
1194         wpabuf_free(wps->dev.vendor_ext_m1);
1195         wps->dev.vendor_ext_m1 = NULL;
1196
1197         if (wpa_s->conf->wps_vendor_ext_m1) {
1198                 wps->dev.vendor_ext_m1 =
1199                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1200                 if (!wps->dev.vendor_ext_m1) {
1201                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1202                                    "allocate memory for vendor_ext_m1");
1203                 }
1204         }
1205 }
1206
1207
1208 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1209 {
1210         struct wps_context *wps;
1211         struct wps_registrar_config rcfg;
1212         struct hostapd_hw_modes *modes;
1213         u16 m;
1214
1215         wps = os_zalloc(sizeof(*wps));
1216         if (wps == NULL)
1217                 return -1;
1218
1219         wps->cred_cb = wpa_supplicant_wps_cred;
1220         wps->event_cb = wpa_supplicant_wps_event;
1221         wps->cb_ctx = wpa_s;
1222
1223         wps->dev.device_name = wpa_s->conf->device_name;
1224         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1225         wps->dev.model_name = wpa_s->conf->model_name;
1226         wps->dev.model_number = wpa_s->conf->model_number;
1227         wps->dev.serial_number = wpa_s->conf->serial_number;
1228         wps->config_methods =
1229                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1230         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1231             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1232                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1233                            "methods are not allowed at the same time");
1234                 os_free(wps);
1235                 return -1;
1236         }
1237         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1238         wps->dev.config_methods = wps->config_methods;
1239         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1240                   WPS_DEV_TYPE_LEN);
1241
1242         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1243         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1244                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1245
1246         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1247
1248         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1249         modes = wpa_s->hw.modes;
1250         if (modes) {
1251                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1252                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1253                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1254                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1255                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1256                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1257                 }
1258         }
1259         if (wps->dev.rf_bands == 0) {
1260                 /*
1261                  * Default to claiming support for both bands if the driver
1262                  * does not provide support for fetching supported bands.
1263                  */
1264                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1265         }
1266         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1267         wpas_wps_set_uuid(wpa_s, wps);
1268
1269         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1270         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1271
1272         os_memset(&rcfg, 0, sizeof(rcfg));
1273         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1274         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1275         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1276         rcfg.cb_ctx = wpa_s;
1277
1278         wps->registrar = wps_registrar_init(wps, &rcfg);
1279         if (wps->registrar == NULL) {
1280                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1281                 os_free(wps);
1282                 return -1;
1283         }
1284
1285         wpa_s->wps = wps;
1286
1287         return 0;
1288 }
1289
1290
1291 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1292 {
1293         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1294         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1295         wpas_wps_clear_ap_info(wpa_s);
1296
1297         if (wpa_s->wps == NULL)
1298                 return;
1299
1300 #ifdef CONFIG_WPS_ER
1301         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1302         wpa_s->wps_er = NULL;
1303 #endif /* CONFIG_WPS_ER */
1304
1305         wps_registrar_deinit(wpa_s->wps->registrar);
1306         wpabuf_free(wpa_s->wps->dh_pubkey);
1307         wpabuf_free(wpa_s->wps->dh_privkey);
1308         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1309         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1310         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1311         os_free(wpa_s->wps->network_key);
1312         os_free(wpa_s->wps);
1313         wpa_s->wps = NULL;
1314 }
1315
1316
1317 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1318                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1319 {
1320         struct wpabuf *wps_ie;
1321
1322         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1323                 return -1;
1324
1325         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1326         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1327                 if (!wps_ie) {
1328                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1329                         return 0;
1330                 }
1331
1332                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1333                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1334                                    "without active PBC Registrar");
1335                         wpabuf_free(wps_ie);
1336                         return 0;
1337                 }
1338
1339                 /* TODO: overlap detection */
1340                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1341                            "(Active PBC)");
1342                 wpabuf_free(wps_ie);
1343                 return 1;
1344         }
1345
1346         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1347                 if (!wps_ie) {
1348                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1349                         return 0;
1350                 }
1351
1352                 /*
1353                  * Start with WPS APs that advertise our address as an
1354                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1355                  * allow any WPS AP after couple of scans since some APs do not
1356                  * set Selected Registrar attribute properly when using
1357                  * external Registrar.
1358                  */
1359                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1360                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1361                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1362                                            "without active PIN Registrar");
1363                                 wpabuf_free(wps_ie);
1364                                 return 0;
1365                         }
1366                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1367                 } else {
1368                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1369                                    "(Authorized MAC or Active PIN)");
1370                 }
1371                 wpabuf_free(wps_ie);
1372                 return 1;
1373         }
1374
1375         if (wps_ie) {
1376                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1377                 wpabuf_free(wps_ie);
1378                 return 1;
1379         }
1380
1381         return -1;
1382 }
1383
1384
1385 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1386                               struct wpa_ssid *ssid,
1387                               struct wpa_bss *bss)
1388 {
1389         struct wpabuf *wps_ie = NULL;
1390         int ret = 0;
1391
1392         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1393                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1394                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1395                         /* allow wildcard SSID for WPS PBC */
1396                         ret = 1;
1397                 }
1398         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1399                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1400                 if (wps_ie &&
1401                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1402                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1403                         /* allow wildcard SSID for WPS PIN */
1404                         ret = 1;
1405                 }
1406         }
1407
1408         if (!ret && ssid->bssid_set &&
1409             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1410                 /* allow wildcard SSID due to hardcoded BSSID match */
1411                 ret = 1;
1412         }
1413
1414 #ifdef CONFIG_WPS_STRICT
1415         if (wps_ie) {
1416                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1417                                                    0, bss->bssid) < 0)
1418                         ret = 0;
1419                 if (bss->beacon_ie_len) {
1420                         struct wpabuf *bcn_wps;
1421                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1422                                 bss, WPS_IE_VENDOR_TYPE);
1423                         if (bcn_wps == NULL) {
1424                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1425                                            "missing from AP Beacon");
1426                                 ret = 0;
1427                         } else {
1428                                 if (wps_validate_beacon(wps_ie) < 0)
1429                                         ret = 0;
1430                                 wpabuf_free(bcn_wps);
1431                         }
1432                 }
1433         }
1434 #endif /* CONFIG_WPS_STRICT */
1435
1436         wpabuf_free(wps_ie);
1437
1438         return ret;
1439 }
1440
1441
1442 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1443                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1444 {
1445         const u8 *sel_uuid, *uuid;
1446         struct wpabuf *wps_ie;
1447         int ret = 0;
1448         struct wpa_bss *bss;
1449
1450         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1451                 return 0;
1452
1453         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1454                    "present in scan results; selected BSSID " MACSTR,
1455                    MAC2STR(selected->bssid));
1456
1457         /* Make sure that only one AP is in active PBC mode */
1458         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1459         if (wps_ie) {
1460                 sel_uuid = wps_get_uuid_e(wps_ie);
1461                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1462                             sel_uuid, UUID_LEN);
1463         } else {
1464                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1465                            "WPS IE?!");
1466                 sel_uuid = NULL;
1467         }
1468
1469         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1470                 struct wpabuf *ie;
1471                 if (bss == selected)
1472                         continue;
1473                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1474                 if (!ie)
1475                         continue;
1476                 if (!wps_is_selected_pbc_registrar(ie)) {
1477                         wpabuf_free(ie);
1478                         continue;
1479                 }
1480                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1481                            MACSTR, MAC2STR(bss->bssid));
1482                 uuid = wps_get_uuid_e(ie);
1483                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1484                             uuid, UUID_LEN);
1485                 if (sel_uuid == NULL || uuid == NULL ||
1486                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1487                         ret = 1; /* PBC overlap */
1488                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1489                                 MACSTR " and " MACSTR,
1490                                 MAC2STR(selected->bssid),
1491                                 MAC2STR(bss->bssid));
1492                         wpabuf_free(ie);
1493                         break;
1494                 }
1495
1496                 /* TODO: verify that this is reasonable dual-band situation */
1497
1498                 wpabuf_free(ie);
1499         }
1500
1501         wpabuf_free(wps_ie);
1502
1503         return ret;
1504 }
1505
1506
1507 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1508 {
1509         struct wpa_bss *bss;
1510         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1511
1512         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1513                 return;
1514
1515         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1516                 struct wpabuf *ie;
1517                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1518                 if (!ie)
1519                         continue;
1520                 if (wps_is_selected_pbc_registrar(ie))
1521                         pbc++;
1522                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1523                         auth++;
1524                 else if (wps_is_selected_pin_registrar(ie))
1525                         pin++;
1526                 else
1527                         wps++;
1528                 wpabuf_free(ie);
1529         }
1530
1531         if (pbc)
1532                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1533         else if (auth)
1534                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1535         else if (pin)
1536                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1537         else if (wps)
1538                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1539 }
1540
1541
1542 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1543 {
1544         struct wpa_ssid *ssid;
1545
1546         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1547                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1548                         return 1;
1549         }
1550
1551         return 0;
1552 }
1553
1554
1555 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1556                               char *end)
1557 {
1558         struct wpabuf *wps_ie;
1559         int ret;
1560
1561         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1562         if (wps_ie == NULL)
1563                 return 0;
1564
1565         ret = wps_attr_text(wps_ie, buf, end);
1566         wpabuf_free(wps_ie);
1567         return ret;
1568 }
1569
1570
1571 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1572 {
1573 #ifdef CONFIG_WPS_ER
1574         if (wpa_s->wps_er) {
1575                 wps_er_refresh(wpa_s->wps_er);
1576                 return 0;
1577         }
1578         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1579         if (wpa_s->wps_er == NULL)
1580                 return -1;
1581         return 0;
1582 #else /* CONFIG_WPS_ER */
1583         return 0;
1584 #endif /* CONFIG_WPS_ER */
1585 }
1586
1587
1588 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1589 {
1590 #ifdef CONFIG_WPS_ER
1591         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1592         wpa_s->wps_er = NULL;
1593 #endif /* CONFIG_WPS_ER */
1594         return 0;
1595 }
1596
1597
1598 #ifdef CONFIG_WPS_ER
1599 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1600                         const char *uuid, const char *pin)
1601 {
1602         u8 u[UUID_LEN];
1603         int any = 0;
1604
1605         if (os_strcmp(uuid, "any") == 0)
1606                 any = 1;
1607         else if (uuid_str2bin(uuid, u))
1608                 return -1;
1609         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1610                                      any ? NULL : u,
1611                                      (const u8 *) pin, os_strlen(pin), 300);
1612 }
1613
1614
1615 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1616 {
1617         u8 u[UUID_LEN];
1618
1619         if (uuid_str2bin(uuid, u))
1620                 return -1;
1621         return wps_er_pbc(wpa_s->wps_er, u);
1622 }
1623
1624
1625 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1626                       const char *pin)
1627 {
1628         u8 u[UUID_LEN];
1629
1630         if (uuid_str2bin(uuid, u))
1631                 return -1;
1632         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1633                             os_strlen(pin));
1634 }
1635
1636
1637 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1638                            int id)
1639 {
1640         u8 u[UUID_LEN];
1641         struct wpa_ssid *ssid;
1642         struct wps_credential cred;
1643
1644         if (uuid_str2bin(uuid, u))
1645                 return -1;
1646         ssid = wpa_config_get_network(wpa_s->conf, id);
1647         if (ssid == NULL || ssid->ssid == NULL)
1648                 return -1;
1649
1650         os_memset(&cred, 0, sizeof(cred));
1651         if (ssid->ssid_len > 32)
1652                 return -1;
1653         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1654         cred.ssid_len = ssid->ssid_len;
1655         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1656                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1657                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1658                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1659                         cred.encr_type = WPS_ENCR_AES;
1660                 else
1661                         cred.encr_type = WPS_ENCR_TKIP;
1662                 if (ssid->passphrase) {
1663                         cred.key_len = os_strlen(ssid->passphrase);
1664                         if (cred.key_len >= 64)
1665                                 return -1;
1666                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1667                 } else if (ssid->psk_set) {
1668                         cred.key_len = 32;
1669                         os_memcpy(cred.key, ssid->psk, 32);
1670                 } else
1671                         return -1;
1672         } else {
1673                 cred.auth_type = WPS_AUTH_OPEN;
1674                 cred.encr_type = WPS_ENCR_NONE;
1675         }
1676         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1677 }
1678
1679
1680 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1681                        const char *pin, struct wps_new_ap_settings *settings)
1682 {
1683         u8 u[UUID_LEN];
1684         struct wps_credential cred;
1685         size_t len;
1686
1687         if (uuid_str2bin(uuid, u))
1688                 return -1;
1689         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1690             settings->encr == NULL || settings->key_hex == NULL)
1691                 return -1;
1692
1693         os_memset(&cred, 0, sizeof(cred));
1694         len = os_strlen(settings->ssid_hex);
1695         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1696             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1697                 return -1;
1698         cred.ssid_len = len / 2;
1699
1700         len = os_strlen(settings->key_hex);
1701         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1702             hexstr2bin(settings->key_hex, cred.key, len / 2))
1703                 return -1;
1704         cred.key_len = len / 2;
1705
1706         if (os_strcmp(settings->auth, "OPEN") == 0)
1707                 cred.auth_type = WPS_AUTH_OPEN;
1708         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1709                 cred.auth_type = WPS_AUTH_WPAPSK;
1710         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1711                 cred.auth_type = WPS_AUTH_WPA2PSK;
1712         else
1713                 return -1;
1714
1715         if (os_strcmp(settings->encr, "NONE") == 0)
1716                 cred.encr_type = WPS_ENCR_NONE;
1717         else if (os_strcmp(settings->encr, "WEP") == 0)
1718                 cred.encr_type = WPS_ENCR_WEP;
1719         else if (os_strcmp(settings->encr, "TKIP") == 0)
1720                 cred.encr_type = WPS_ENCR_TKIP;
1721         else if (os_strcmp(settings->encr, "CCMP") == 0)
1722                 cred.encr_type = WPS_ENCR_AES;
1723         else
1724                 return -1;
1725
1726         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1727                              os_strlen(pin), &cred);
1728 }
1729
1730
1731 #ifdef CONFIG_WPS_NFC
1732 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1733                                              int ndef, const char *uuid)
1734 {
1735         struct wpabuf *ret;
1736         u8 u[UUID_LEN];
1737
1738         if (!wpa_s->wps_er)
1739                 return NULL;
1740
1741         if (uuid_str2bin(uuid, u))
1742                 return NULL;
1743
1744         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1745         if (ndef && ret) {
1746                 struct wpabuf *tmp;
1747                 tmp = ndef_build_wifi(ret);
1748                 wpabuf_free(ret);
1749                 if (tmp == NULL)
1750                         return NULL;
1751                 ret = tmp;
1752         }
1753
1754         return ret;
1755 }
1756 #endif /* CONFIG_WPS_NFC */
1757
1758
1759 static int callbacks_pending = 0;
1760
1761 static void wpas_wps_terminate_cb(void *ctx)
1762 {
1763         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1764         if (--callbacks_pending <= 0)
1765                 eloop_terminate();
1766 }
1767 #endif /* CONFIG_WPS_ER */
1768
1769
1770 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1771 {
1772 #ifdef CONFIG_WPS_ER
1773         if (wpa_s->wps_er) {
1774                 callbacks_pending++;
1775                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1776                 wpa_s->wps_er = NULL;
1777                 return 1;
1778         }
1779 #endif /* CONFIG_WPS_ER */
1780         return 0;
1781 }
1782
1783
1784 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1785 {
1786         struct wpa_ssid *ssid;
1787
1788         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1789                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1790                         return 1;
1791         }
1792
1793         return 0;
1794 }
1795
1796
1797 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1798 {
1799         struct wps_context *wps = wpa_s->wps;
1800
1801         if (wps == NULL)
1802                 return;
1803
1804         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1805                 wps->config_methods = wps_config_methods_str2bin(
1806                         wpa_s->conf->config_methods);
1807                 if ((wps->config_methods &
1808                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1809                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1810                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1811                                    "config methods are not allowed at the "
1812                                    "same time");
1813                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1814                 }
1815         }
1816         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1817         wps->dev.config_methods = wps->config_methods;
1818
1819         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1820                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1821                           WPS_DEV_TYPE_LEN);
1822
1823         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1824                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1825                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1826                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1827         }
1828
1829         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1830                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1831
1832         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1833                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1834
1835         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1836                 wpas_wps_set_uuid(wpa_s, wps);
1837
1838         if (wpa_s->conf->changed_parameters &
1839             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1840                 /* Update pointers to make sure they refer current values */
1841                 wps->dev.device_name = wpa_s->conf->device_name;
1842                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1843                 wps->dev.model_name = wpa_s->conf->model_name;
1844                 wps->dev.model_number = wpa_s->conf->model_number;
1845                 wps->dev.serial_number = wpa_s->conf->serial_number;
1846         }
1847 }
1848
1849
1850 #ifdef CONFIG_WPS_NFC
1851
1852 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1853 {
1854         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1855                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1856                                  &wpa_s->conf->wps_nfc_dh_privkey,
1857                                  &wpa_s->conf->wps_nfc_dev_pw);
1858 }
1859
1860
1861 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1862 {
1863         struct wps_context *wps = wpa_s->wps;
1864         char pw[32 * 2 + 1];
1865
1866         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1867             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1868             wpa_s->conf->wps_nfc_dev_pw == NULL)
1869                 return -1;
1870
1871         dh5_free(wps->dh_ctx);
1872         wpabuf_free(wps->dh_pubkey);
1873         wpabuf_free(wps->dh_privkey);
1874         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1875         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1876         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1877                 wps->dh_ctx = NULL;
1878                 wpabuf_free(wps->dh_pubkey);
1879                 wps->dh_pubkey = NULL;
1880                 wpabuf_free(wps->dh_privkey);
1881                 wps->dh_privkey = NULL;
1882                 return -1;
1883         }
1884         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1885         if (wps->dh_ctx == NULL)
1886                 return -1;
1887
1888         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1889                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1890                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1891         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1892                                   wpa_s->conf->wps_nfc_dev_pw_id);
1893 }
1894
1895
1896 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1897                              struct wps_parse_attr *attr)
1898 {
1899         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1900                 return -1;
1901
1902         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1903                 return 0;
1904
1905         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1906                    "based on the received credential added");
1907         wpa_s->normal_scans = 0;
1908         wpa_supplicant_reinit_autoscan(wpa_s);
1909         wpa_s->disconnected = 0;
1910         wpa_s->reassociate = 1;
1911         wpa_supplicant_req_scan(wpa_s, 0, 0);
1912
1913         return 0;
1914 }
1915
1916
1917 #ifdef CONFIG_WPS_ER
1918 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1919                                            struct wps_parse_attr *attr)
1920 {
1921         return wps_registrar_add_nfc_password_token(
1922                 wpa_s->wps->registrar, attr->oob_dev_password,
1923                 attr->oob_dev_password_len);
1924 }
1925 #endif /* CONFIG_WPS_ER */
1926
1927
1928 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1929                                     const struct wpabuf *wps)
1930 {
1931         struct wps_parse_attr attr;
1932
1933         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1934
1935         if (wps_parse_msg(wps, &attr)) {
1936                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1937                 return -1;
1938         }
1939
1940         if (attr.num_cred)
1941                 return wpas_wps_use_cred(wpa_s, &attr);
1942
1943 #ifdef CONFIG_WPS_ER
1944         if (attr.oob_dev_password)
1945                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1946 #endif /* CONFIG_WPS_ER */
1947
1948         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1949         return -1;
1950 }
1951
1952
1953 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1954                           const struct wpabuf *data)
1955 {
1956         const struct wpabuf *wps = data;
1957         struct wpabuf *tmp = NULL;
1958         int ret;
1959
1960         if (wpabuf_len(data) < 4)
1961                 return -1;
1962
1963         if (*wpabuf_head_u8(data) != 0x10) {
1964                 /* Assume this contains full NDEF record */
1965                 tmp = ndef_parse_wifi(data);
1966                 if (tmp == NULL) {
1967                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1968                         return -1;
1969                 }
1970                 wps = tmp;
1971         }
1972
1973         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1974         wpabuf_free(tmp);
1975         return ret;
1976 }
1977
1978 #endif /* CONFIG_WPS_NFC */
1979
1980
1981 extern int wpa_debug_level;
1982
1983 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
1984 {
1985         size_t i;
1986         struct os_time now;
1987
1988         if (wpa_debug_level > MSG_DEBUG)
1989                 return;
1990
1991         if (wpa_s->wps_ap == NULL)
1992                 return;
1993
1994         os_get_time(&now);
1995
1996         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1997                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1998                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
1999
2000                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2001                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2002                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2003                            ap->last_attempt.sec > 0 ?
2004                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2005                            e ? e->count : 0);
2006         }
2007 }
2008
2009
2010 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2011                                                  const u8 *bssid)
2012 {
2013         size_t i;
2014
2015         if (wpa_s->wps_ap == NULL)
2016                 return NULL;
2017
2018         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2019                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2020                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2021                         return ap;
2022         }
2023
2024         return NULL;
2025 }
2026
2027
2028 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2029                                         struct wpa_scan_res *res)
2030 {
2031         struct wpabuf *wps;
2032         enum wps_ap_info_type type;
2033         struct wps_ap_info *ap;
2034         int r;
2035
2036         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2037                 return;
2038
2039         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2040         if (wps == NULL)
2041                 return;
2042
2043         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2044         if (r == 2)
2045                 type = WPS_AP_SEL_REG_OUR;
2046         else if (r == 1)
2047                 type = WPS_AP_SEL_REG;
2048         else
2049                 type = WPS_AP_NOT_SEL_REG;
2050
2051         wpabuf_free(wps);
2052
2053         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2054         if (ap) {
2055                 if (ap->type != type) {
2056                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2057                                    " changed type %d -> %d",
2058                                    MAC2STR(res->bssid), ap->type, type);
2059                         ap->type = type;
2060                         if (type != WPS_AP_NOT_SEL_REG)
2061                                 wpa_blacklist_del(wpa_s, ap->bssid);
2062                 }
2063                 return;
2064         }
2065
2066         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2067                               sizeof(struct wps_ap_info));
2068         if (ap == NULL)
2069                 return;
2070
2071         wpa_s->wps_ap = ap;
2072         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2073         wpa_s->num_wps_ap++;
2074
2075         os_memset(ap, 0, sizeof(*ap));
2076         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2077         ap->type = type;
2078         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2079                    MAC2STR(ap->bssid), ap->type);
2080 }
2081
2082
2083 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2084                              struct wpa_scan_results *scan_res)
2085 {
2086         size_t i;
2087
2088         for (i = 0; i < scan_res->num; i++)
2089                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2090
2091         wpas_wps_dump_ap_info(wpa_s);
2092 }
2093
2094
2095 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2096 {
2097         struct wps_ap_info *ap;
2098         if (!wpa_s->wps_ap_iter)
2099                 return;
2100         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2101         if (ap == NULL)
2102                 return;
2103         ap->tries++;
2104         os_get_time(&ap->last_attempt);
2105 }