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 wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 491 {
 492         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 493         wpa_s->wps_success = 1;
 494         wpas_notify_wps_event_success(wpa_s);
 495 #ifdef CONFIG_P2P
 496         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 497 #endif /* CONFIG_P2P */
 498 }
 499
 500
 501 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 502                                                struct wps_event_er_ap *ap)
 503 {
 504         char uuid_str[100];
 505         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 506
 507         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 508         if (ap->pri_dev_type)
 509                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 510                                      sizeof(dev_type));
 511         else
 512                 dev_type[0] = '\0';
 513
 514         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 515                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 516                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 517                 ap->friendly_name ? ap->friendly_name : "",
 518                 ap->manufacturer ? ap->manufacturer : "",
 519                 ap->model_description ? ap->model_description : "",
 520                 ap->model_name ? ap->model_name : "",
 521                 ap->manufacturer_url ? ap->manufacturer_url : "",
 522                 ap->model_url ? ap->model_url : "");
 523 }
 524
 525
 526 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 527                                                   struct wps_event_er_ap *ap)
 528 {
 529         char uuid_str[100];
 530         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 531         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 532 }
 533
 534
 535 static void wpa_supplicant_wps_event_er_enrollee_add(
 536         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 537 {
 538         char uuid_str[100];
 539         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 540
 541         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 542         if (enrollee->pri_dev_type)
 543                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 544                                      sizeof(dev_type));
 545         else
 546                 dev_type[0] = '\0';
 547
 548         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 549                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 550                 "|%s|%s|%s|%s|%s|",
 551                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 552                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 553                 enrollee->dev_name ? enrollee->dev_name : "",
 554                 enrollee->manufacturer ? enrollee->manufacturer : "",
 555                 enrollee->model_name ? enrollee->model_name : "",
 556                 enrollee->model_number ? enrollee->model_number : "",
 557                 enrollee->serial_number ? enrollee->serial_number : "");
 558 }
 559
 560
 561 static void wpa_supplicant_wps_event_er_enrollee_remove(
 562         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 563 {
 564         char uuid_str[100];
 565         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 566         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 567                 uuid_str, MAC2STR(enrollee->mac_addr));
 568 }
 569
 570
 571 static void wpa_supplicant_wps_event_er_ap_settings(
 572         struct wpa_supplicant *wpa_s,
 573         struct wps_event_er_ap_settings *ap_settings)
 574 {
 575         char uuid_str[100];
 576         char key_str[65];
 577         const struct wps_credential *cred = ap_settings->cred;
 578
 579         key_str[0] = '\0';
 580         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 581                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 582                         os_memcpy(key_str, cred->key, cred->key_len);
 583                         key_str[cred->key_len] = '\0';
 584                 }
 585         }
 586
 587         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 588         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 589         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 590                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 591                      "key=%s",
 592                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 593                      cred->auth_type, cred->encr_type, key_str);
 594 }
 595
 596
 597 static void wpa_supplicant_wps_event_er_set_sel_reg(
 598         struct wpa_supplicant *wpa_s,
 599         struct wps_event_er_set_selected_registrar *ev)
 600 {
 601         char uuid_str[100];
 602
 603         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 604         switch (ev->state) {
 605         case WPS_ER_SET_SEL_REG_START:
 606                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 607                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 608                         "sel_reg_config_methods=0x%x",
 609                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 610                         ev->sel_reg_config_methods);
 611                 break;
 612         case WPS_ER_SET_SEL_REG_DONE:
 613                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 614                         "uuid=%s state=DONE", uuid_str);
 615                 break;
 616         case WPS_ER_SET_SEL_REG_FAILED:
 617                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 618                         "uuid=%s state=FAILED", uuid_str);
 619                 break;
 620         }
 621 }
 622
 623
 624 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 625                                      union wps_event_data *data)
 626 {
 627         struct wpa_supplicant *wpa_s = ctx;
 628         switch (event) {
 629         case WPS_EV_M2D:
 630                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 631                 break;
 632         case WPS_EV_FAIL:
 633                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 634                 break;
 635         case WPS_EV_SUCCESS:
 636                 wpa_supplicant_wps_event_success(wpa_s);
 637                 break;
 638         case WPS_EV_PWD_AUTH_FAIL:
 639 #ifdef CONFIG_AP
 640                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 641                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 642 #endif /* CONFIG_AP */
 643                 break;
 644         case WPS_EV_PBC_OVERLAP:
 645                 break;
 646         case WPS_EV_PBC_TIMEOUT:
 647                 break;
 648         case WPS_EV_ER_AP_ADD:
 649                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 650                 break;
 651         case WPS_EV_ER_AP_REMOVE:
 652                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 653                 break;
 654         case WPS_EV_ER_ENROLLEE_ADD:
 655                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 656                                                          &data->enrollee);
 657                 break;
 658         case WPS_EV_ER_ENROLLEE_REMOVE:
 659                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 660                                                             &data->enrollee);
 661                 break;
 662         case WPS_EV_ER_AP_SETTINGS:
 663                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 664                                                         &data->ap_settings);
 665                 break;
 666         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 667                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 668                                                         &data->set_sel_reg);
 669                 break;
 670         case WPS_EV_AP_PIN_SUCCESS:
 671                 break;
 672         }
 673 }
 674
 675
 676 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 677 {
 678         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 679             eap_is_wps_pin_enrollee(&ssid->eap))
 680                 return WPS_REQ_ENROLLEE;
 681         else
 682                 return WPS_REQ_REGISTRAR;
 683 }
 684
 685
 686 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 687 {
 688         int id;
 689         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 690
 691         prev_current = wpa_s->current_ssid;
 692
 693         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 694
 695         /* Remove any existing WPS network from configuration */
 696         ssid = wpa_s->conf->ssid;
 697         while (ssid) {
 698                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 699                         if (ssid == wpa_s->current_ssid) {
 700                                 wpa_s->current_ssid = NULL;
 701                                 if (ssid != NULL)
 702                                         wpas_notify_network_changed(wpa_s);
 703                         }
 704                         id = ssid->id;
 705                         remove_ssid = ssid;
 706                 } else
 707                         id = -1;
 708                 ssid = ssid->next;
 709                 if (id >= 0) {
 710                         if (prev_current == remove_ssid) {
 711                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 712                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 713                                                        NULL);
 714                         }
 715                         wpas_notify_network_removed(wpa_s, remove_ssid);
 716                         wpa_config_remove_network(wpa_s->conf, id);
 717                 }
 718         }
 719
 720         wpas_wps_clear_ap_info(wpa_s);
 721 }
 722
 723
 724 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 725 {
 726         struct wpa_supplicant *wpa_s = eloop_ctx;
 727         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 728                 "out");
 729         wpas_clear_wps(wpa_s);
 730 }
 731
 732
 733 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 734                                               int registrar, const u8 *bssid)
 735 {
 736         struct wpa_ssid *ssid;
 737
 738         ssid = wpa_config_add_network(wpa_s->conf);
 739         if (ssid == NULL)
 740                 return NULL;
 741         wpas_notify_network_added(wpa_s, ssid);
 742         wpa_config_set_network_defaults(ssid);
 743         ssid->temporary = 1;
 744         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 745             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 746             wpa_config_set(ssid, "identity", registrar ?
 747                            "\"" WSC_ID_REGISTRAR "\"" :
 748                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 749                 wpas_notify_network_removed(wpa_s, ssid);
 750                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 751                 return NULL;
 752         }
 753
 754         if (bssid) {
 755 #ifndef CONFIG_P2P
 756                 struct wpa_bss *bss;
 757                 int count = 0;
 758 #endif /* CONFIG_P2P */
 759
 760                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 761                 ssid->bssid_set = 1;
 762
 763                 /*
 764                  * Note: With P2P, the SSID may change at the time the WPS
 765                  * provisioning is started, so better not filter the AP based
 766                  * on the current SSID in the scan results.
 767                  */
 768 #ifndef CONFIG_P2P
 769                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 770                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 771                                 continue;
 772
 773                         os_free(ssid->ssid);
 774                         ssid->ssid = os_malloc(bss->ssid_len);
 775                         if (ssid->ssid == NULL)
 776                                 break;
 777                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 778                         ssid->ssid_len = bss->ssid_len;
 779                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 780                                           "scan results",
 781                                           ssid->ssid, ssid->ssid_len);
 782                         count++;
 783                 }
 784
 785                 if (count > 1) {
 786                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 787                                    "for the AP; use wildcard");
 788                         os_free(ssid->ssid);
 789                         ssid->ssid = NULL;
 790                         ssid->ssid_len = 0;
 791                 }
 792 #endif /* CONFIG_P2P */
 793         }
 794
 795         return ssid;
 796 }
 797
 798
 799 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 800                              struct wpa_ssid *selected, const u8 *bssid)
 801 {
 802         struct wpa_ssid *ssid;
 803         struct wpa_bss *bss;
 804
 805         wpa_s->known_wps_freq = 0;
 806         if (bssid) {
 807                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 808                 if (bss && bss->freq > 0) {
 809                         wpa_s->known_wps_freq = 1;
 810                         wpa_s->wps_freq = bss->freq;
 811                 }
 812         }
 813
 814         if (wpa_s->current_ssid)
 815                 wpa_supplicant_deauthenticate(
 816                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 817
 818         /* Mark all other networks disabled and trigger reassociation */
 819         ssid = wpa_s->conf->ssid;
 820         while (ssid) {
 821                 int was_disabled = ssid->disabled;
 822                 /*
 823                  * In case the network object corresponds to a persistent group
 824                  * then do not send out network disabled signal. In addition,
 825                  * do not change disabled status of persistent network objects
 826                  * from 2 to 1 should we connect to another network.
 827                  */
 828                 if (was_disabled != 2) {
 829                         ssid->disabled = ssid != selected;
 830                         if (was_disabled != ssid->disabled)
 831                                 wpas_notify_network_enabled_changed(wpa_s,
 832                                                                     ssid);
 833                 }
 834                 ssid = ssid->next;
 835         }
 836         wpa_s->disconnected = 0;
 837         wpa_s->reassociate = 1;
 838         wpa_s->scan_runs = 0;
 839         wpa_s->normal_scans = 0;
 840         wpa_s->wps_success = 0;
 841         wpa_s->blacklist_cleared = 0;
 842         wpa_supplicant_req_scan(wpa_s, 0, 0);
 843 }
 844
 845
 846 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 847                        int p2p_group)
 848 {
 849         struct wpa_ssid *ssid;
 850         wpas_clear_wps(wpa_s);
 851         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 852         if (ssid == NULL)
 853                 return -1;
 854         ssid->temporary = 1;
 855         ssid->p2p_group = p2p_group;
 856 #ifdef CONFIG_P2P
 857         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 858                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 859                 if (ssid->ssid) {
 860                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 861                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 862                                   ssid->ssid_len);
 863                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 864                                           "SSID", ssid->ssid, ssid->ssid_len);
 865                 }
 866         }
 867 #endif /* CONFIG_P2P */
 868         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 869         if (wpa_s->wps_fragment_size)
 870                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 871         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 872                                wpa_s, NULL);
 873         wpas_wps_reassoc(wpa_s, ssid, bssid);
 874         return 0;
 875 }
 876
 877
 878 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 879                        const char *pin, int p2p_group, u16 dev_pw_id)
 880 {
 881         struct wpa_ssid *ssid;
 882         char val[128];
 883         unsigned int rpin = 0;
 884
 885         wpas_clear_wps(wpa_s);
 886         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 887         if (ssid == NULL)
 888                 return -1;
 889         ssid->temporary = 1;
 890         ssid->p2p_group = p2p_group;
 891 #ifdef CONFIG_P2P
 892         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 893                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 894                 if (ssid->ssid) {
 895                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 896                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 897                                   ssid->ssid_len);
 898                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 899                                           "SSID", ssid->ssid, ssid->ssid_len);
 900                 }
 901         }
 902 #endif /* CONFIG_P2P */
 903         if (pin)
 904                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 905                             pin, dev_pw_id);
 906         else {
 907                 rpin = wps_generate_pin();
 908                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 909                             rpin, dev_pw_id);
 910         }
 911         wpa_config_set(ssid, "phase1", val, 0);
 912         if (wpa_s->wps_fragment_size)
 913                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 914         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 915                                wpa_s, NULL);
 916         wpa_s->wps_ap_iter = 1;
 917         wpas_wps_reassoc(wpa_s, ssid, bssid);
 918         return rpin;
 919 }
 920
 921
 922 /* Cancel the wps pbc/pin requests */
 923 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 924 {
 925 #ifdef CONFIG_AP
 926         if (wpa_s->ap_iface) {
 927                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 928                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 929         }
 930 #endif /* CONFIG_AP */
 931
 932         if (wpa_s->wpa_state == WPA_SCANNING ||
 933             wpa_s->wpa_state == WPA_DISCONNECTED) {
 934                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 935                 wpa_supplicant_cancel_scan(wpa_s);
 936                 wpas_clear_wps(wpa_s);
 937         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 938                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 939                            "deauthenticate");
 940                 wpa_supplicant_deauthenticate(wpa_s,
 941                                               WLAN_REASON_DEAUTH_LEAVING);
 942                 wpas_clear_wps(wpa_s);
 943         } else
 944                 wpas_wps_clear_ap_info(wpa_s);
 945
 946         return 0;
 947 }
 948
 949
 950 #ifdef CONFIG_WPS_OOB
 951 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 952                        char *path, char *method, char *name)
 953 {
 954         struct wps_context *wps = wpa_s->wps;
 955         struct oob_device_data *oob_dev;
 956
 957         oob_dev = wps_get_oob_device(device_type);
 958         if (oob_dev == NULL)
 959                 return -1;
 960         oob_dev->device_path = path;
 961         oob_dev->device_name = name;
 962         wps->oob_conf.oob_method = wps_get_oob_method(method);
 963
 964         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 965                 /*
 966                  * Use pre-configured DH keys in order to be able to write the
 967                  * key hash into the OOB file.
 968                  */
 969                 wpabuf_free(wps->dh_pubkey);
 970                 wpabuf_free(wps->dh_privkey);
 971                 wps->dh_privkey = NULL;
 972                 wps->dh_pubkey = NULL;
 973                 dh5_free(wps->dh_ctx);
 974                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 975                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 976                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 977                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 978                                    "Diffie-Hellman handshake");
 979                         return -1;
 980                 }
 981         }
 982
 983         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 984                 wpas_clear_wps(wpa_s);
 985
 986         if (wps_process_oob(wps, oob_dev, 0) < 0)
 987                 return -1;
 988
 989         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 990              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 991             wpas_wps_start_pin(wpa_s, NULL,
 992                                wpabuf_head(wps->oob_conf.dev_password), 0,
 993                                DEV_PW_DEFAULT) < 0)
 994                         return -1;
 995
 996         return 0;
 997 }
 998 #endif /* CONFIG_WPS_OOB */
 999
1000
1001 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1002                        const char *pin, struct wps_new_ap_settings *settings)
1003 {
1004         struct wpa_ssid *ssid;
1005         char val[200];
1006         char *pos, *end;
1007         int res;
1008
1009         if (!pin)
1010                 return -1;
1011         wpas_clear_wps(wpa_s);
1012         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1013         if (ssid == NULL)
1014                 return -1;
1015         ssid->temporary = 1;
1016         pos = val;
1017         end = pos + sizeof(val);
1018         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1019         if (res < 0 || res >= end - pos)
1020                 return -1;
1021         pos += res;
1022         if (settings) {
1023                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1024                                   "new_encr=%s new_key=%s",
1025                                   settings->ssid_hex, settings->auth,
1026                                   settings->encr, settings->key_hex);
1027                 if (res < 0 || res >= end - pos)
1028                         return -1;
1029                 pos += res;
1030         }
1031         res = os_snprintf(pos, end - pos, "\"");
1032         if (res < 0 || res >= end - pos)
1033                 return -1;
1034         wpa_config_set(ssid, "phase1", val, 0);
1035         if (wpa_s->wps_fragment_size)
1036                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1037         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1038                                wpa_s, NULL);
1039         wpas_wps_reassoc(wpa_s, ssid, bssid);
1040         return 0;
1041 }
1042
1043
1044 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1045                                size_t psk_len)
1046 {
1047         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1048                    "STA " MACSTR, MAC2STR(mac_addr));
1049         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1050
1051         /* TODO */
1052
1053         return 0;
1054 }
1055
1056
1057 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1058                                    const struct wps_device_data *dev)
1059 {
1060         char uuid[40], txt[400];
1061         int len;
1062         char devtype[WPS_DEV_TYPE_BUFSIZE];
1063         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1064                 return;
1065         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1066         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1067                           " [%s|%s|%s|%s|%s|%s]",
1068                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1069                           dev->manufacturer, dev->model_name,
1070                           dev->model_number, dev->serial_number,
1071                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1072                                                sizeof(devtype)));
1073         if (len > 0 && len < (int) sizeof(txt))
1074                 wpa_printf(MSG_INFO, "%s", txt);
1075 }
1076
1077
1078 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1079                                     u16 sel_reg_config_methods)
1080 {
1081 #ifdef CONFIG_WPS_ER
1082         struct wpa_supplicant *wpa_s = ctx;
1083
1084         if (wpa_s->wps_er == NULL)
1085                 return;
1086         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1087                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1088                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1089         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1090                            sel_reg_config_methods);
1091 #endif /* CONFIG_WPS_ER */
1092 }
1093
1094
1095 static u16 wps_fix_config_methods(u16 config_methods)
1096 {
1097 #ifdef CONFIG_WPS2
1098         if ((config_methods &
1099              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1100               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1101                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1102                            "virtual_display for WPS 2.0 compliance");
1103                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1104         }
1105         if ((config_methods &
1106              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1107               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1108                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1109                            "virtual_push_button for WPS 2.0 compliance");
1110                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1111         }
1112 #endif /* CONFIG_WPS2 */
1113
1114         return config_methods;
1115 }
1116
1117
1118 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1119                               struct wps_context *wps)
1120 {
1121         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1122         if (is_nil_uuid(wpa_s->conf->uuid)) {
1123                 struct wpa_supplicant *first;
1124                 first = wpa_s->global->ifaces;
1125                 while (first && first->next)
1126                         first = first->next;
1127                 if (first && first != wpa_s) {
1128                         if (wps != wpa_s->global->ifaces->wps)
1129                                 os_memcpy(wps->uuid,
1130                                           wpa_s->global->ifaces->wps->uuid,
1131                                           WPS_UUID_LEN);
1132                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1133                                     "interface", wps->uuid, WPS_UUID_LEN);
1134                 } else {
1135                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1136                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1137                                     "address", wps->uuid, WPS_UUID_LEN);
1138                 }
1139         } else {
1140                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1141                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1142                             wps->uuid, WPS_UUID_LEN);
1143         }
1144 }
1145
1146
1147 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1148                                        struct wps_context *wps)
1149 {
1150         wpabuf_free(wps->dev.vendor_ext_m1);
1151         wps->dev.vendor_ext_m1 = NULL;
1152
1153         if (wpa_s->conf->wps_vendor_ext_m1) {
1154                 wps->dev.vendor_ext_m1 =
1155                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1156                 if (!wps->dev.vendor_ext_m1) {
1157                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1158                                    "allocate memory for vendor_ext_m1");
1159                 }
1160         }
1161 }
1162
1163
1164 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1165 {
1166         struct wps_context *wps;
1167         struct wps_registrar_config rcfg;
1168         struct hostapd_hw_modes *modes;
1169         u16 m;
1170
1171         wps = os_zalloc(sizeof(*wps));
1172         if (wps == NULL)
1173                 return -1;
1174
1175         wps->cred_cb = wpa_supplicant_wps_cred;
1176         wps->event_cb = wpa_supplicant_wps_event;
1177         wps->cb_ctx = wpa_s;
1178
1179         wps->dev.device_name = wpa_s->conf->device_name;
1180         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1181         wps->dev.model_name = wpa_s->conf->model_name;
1182         wps->dev.model_number = wpa_s->conf->model_number;
1183         wps->dev.serial_number = wpa_s->conf->serial_number;
1184         wps->config_methods =
1185                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1186         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1187             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1188                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1189                            "methods are not allowed at the same time");
1190                 os_free(wps);
1191                 return -1;
1192         }
1193         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1194         wps->dev.config_methods = wps->config_methods;
1195         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1196                   WPS_DEV_TYPE_LEN);
1197
1198         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1199         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1200                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1201
1202         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1203
1204         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1205         modes = wpa_s->hw.modes;
1206         if (modes) {
1207                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1208                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1209                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1210                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1211                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1212                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1213                 }
1214         }
1215         if (wps->dev.rf_bands == 0) {
1216                 /*
1217                  * Default to claiming support for both bands if the driver
1218                  * does not provide support for fetching supported bands.
1219                  */
1220                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1221         }
1222         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1223         wpas_wps_set_uuid(wpa_s, wps);
1224
1225         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1226         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1227
1228         os_memset(&rcfg, 0, sizeof(rcfg));
1229         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1230         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1231         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1232         rcfg.cb_ctx = wpa_s;
1233
1234         wps->registrar = wps_registrar_init(wps, &rcfg);
1235         if (wps->registrar == NULL) {
1236                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1237                 os_free(wps);
1238                 return -1;
1239         }
1240
1241         wpa_s->wps = wps;
1242
1243         return 0;
1244 }
1245
1246
1247 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1248 {
1249         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1250         wpas_wps_clear_ap_info(wpa_s);
1251
1252         if (wpa_s->wps == NULL)
1253                 return;
1254
1255 #ifdef CONFIG_WPS_ER
1256         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1257         wpa_s->wps_er = NULL;
1258 #endif /* CONFIG_WPS_ER */
1259
1260         wps_registrar_deinit(wpa_s->wps->registrar);
1261         wpabuf_free(wpa_s->wps->dh_pubkey);
1262         wpabuf_free(wpa_s->wps->dh_privkey);
1263         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1264         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1265         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1266         os_free(wpa_s->wps->network_key);
1267         os_free(wpa_s->wps);
1268         wpa_s->wps = NULL;
1269 }
1270
1271
1272 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1273                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1274 {
1275         struct wpabuf *wps_ie;
1276
1277         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1278                 return -1;
1279
1280         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1281         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1282                 if (!wps_ie) {
1283                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1284                         return 0;
1285                 }
1286
1287                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1288                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1289                                    "without active PBC Registrar");
1290                         wpabuf_free(wps_ie);
1291                         return 0;
1292                 }
1293
1294                 /* TODO: overlap detection */
1295                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1296                            "(Active PBC)");
1297                 wpabuf_free(wps_ie);
1298                 return 1;
1299         }
1300
1301         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1302                 if (!wps_ie) {
1303                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1304                         return 0;
1305                 }
1306
1307                 /*
1308                  * Start with WPS APs that advertise our address as an
1309                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1310                  * allow any WPS AP after couple of scans since some APs do not
1311                  * set Selected Registrar attribute properly when using
1312                  * external Registrar.
1313                  */
1314                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1315                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1316                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1317                                            "without active PIN Registrar");
1318                                 wpabuf_free(wps_ie);
1319                                 return 0;
1320                         }
1321                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1322                 } else {
1323                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1324                                    "(Authorized MAC or Active PIN)");
1325                 }
1326                 wpabuf_free(wps_ie);
1327                 return 1;
1328         }
1329
1330         if (wps_ie) {
1331                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1332                 wpabuf_free(wps_ie);
1333                 return 1;
1334         }
1335
1336         return -1;
1337 }
1338
1339
1340 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1341                               struct wpa_ssid *ssid,
1342                               struct wpa_scan_res *bss)
1343 {
1344         struct wpabuf *wps_ie = NULL;
1345         int ret = 0;
1346
1347         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1348                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1349                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1350                         /* allow wildcard SSID for WPS PBC */
1351                         ret = 1;
1352                 }
1353         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1354                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1355                 if (wps_ie &&
1356                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1357                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1358                         /* allow wildcard SSID for WPS PIN */
1359                         ret = 1;
1360                 }
1361         }
1362
1363         if (!ret && ssid->bssid_set &&
1364             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1365                 /* allow wildcard SSID due to hardcoded BSSID match */
1366                 ret = 1;
1367         }
1368
1369 #ifdef CONFIG_WPS_STRICT
1370         if (wps_ie) {
1371                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1372                                                    0, bss->bssid) < 0)
1373                         ret = 0;
1374                 if (bss->beacon_ie_len) {
1375                         struct wpabuf *bcn_wps;
1376                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1377                                 bss, WPS_IE_VENDOR_TYPE);
1378                         if (bcn_wps == NULL) {
1379                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1380                                            "missing from AP Beacon");
1381                                 ret = 0;
1382                         } else {
1383                                 if (wps_validate_beacon(wps_ie) < 0)
1384                                         ret = 0;
1385                                 wpabuf_free(bcn_wps);
1386                         }
1387                 }
1388         }
1389 #endif /* CONFIG_WPS_STRICT */
1390
1391         wpabuf_free(wps_ie);
1392
1393         return ret;
1394 }
1395
1396
1397 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1398                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1399 {
1400         const u8 *sel_uuid, *uuid;
1401         struct wpabuf *wps_ie;
1402         int ret = 0;
1403         struct wpa_bss *bss;
1404
1405         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1406                 return 0;
1407
1408         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1409                    "present in scan results; selected BSSID " MACSTR,
1410                    MAC2STR(selected->bssid));
1411
1412         /* Make sure that only one AP is in active PBC mode */
1413         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1414         if (wps_ie) {
1415                 sel_uuid = wps_get_uuid_e(wps_ie);
1416                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1417                             sel_uuid, UUID_LEN);
1418         } else {
1419                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1420                            "WPS IE?!");
1421                 sel_uuid = NULL;
1422         }
1423
1424         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1425                 struct wpabuf *ie;
1426                 if (bss == selected)
1427                         continue;
1428                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1429                 if (!ie)
1430                         continue;
1431                 if (!wps_is_selected_pbc_registrar(ie)) {
1432                         wpabuf_free(ie);
1433                         continue;
1434                 }
1435                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1436                            MACSTR, MAC2STR(bss->bssid));
1437                 uuid = wps_get_uuid_e(ie);
1438                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1439                             uuid, UUID_LEN);
1440                 if (sel_uuid == NULL || uuid == NULL ||
1441                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1442                         ret = 1; /* PBC overlap */
1443                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1444                                 MACSTR " and " MACSTR,
1445                                 MAC2STR(selected->bssid),
1446                                 MAC2STR(bss->bssid));
1447                         wpabuf_free(ie);
1448                         break;
1449                 }
1450
1451                 /* TODO: verify that this is reasonable dual-band situation */
1452
1453                 wpabuf_free(ie);
1454         }
1455
1456         wpabuf_free(wps_ie);
1457
1458         return ret;
1459 }
1460
1461
1462 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1463 {
1464         struct wpa_bss *bss;
1465         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1466
1467         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1468                 return;
1469
1470         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1471                 struct wpabuf *ie;
1472                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1473                 if (!ie)
1474                         continue;
1475                 if (wps_is_selected_pbc_registrar(ie))
1476                         pbc++;
1477                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1478                         auth++;
1479                 else if (wps_is_selected_pin_registrar(ie))
1480                         pin++;
1481                 else
1482                         wps++;
1483                 wpabuf_free(ie);
1484         }
1485
1486         if (pbc)
1487                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1488         else if (auth)
1489                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1490         else if (pin)
1491                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1492         else if (wps)
1493                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1494 }
1495
1496
1497 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1498 {
1499         struct wpa_ssid *ssid;
1500
1501         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1502                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1503                         return 1;
1504         }
1505
1506         return 0;
1507 }
1508
1509
1510 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1511                               char *end)
1512 {
1513         struct wpabuf *wps_ie;
1514         int ret;
1515
1516         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1517         if (wps_ie == NULL)
1518                 return 0;
1519
1520         ret = wps_attr_text(wps_ie, buf, end);
1521         wpabuf_free(wps_ie);
1522         return ret;
1523 }
1524
1525
1526 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1527 {
1528 #ifdef CONFIG_WPS_ER
1529         if (wpa_s->wps_er) {
1530                 wps_er_refresh(wpa_s->wps_er);
1531                 return 0;
1532         }
1533         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1534         if (wpa_s->wps_er == NULL)
1535                 return -1;
1536         return 0;
1537 #else /* CONFIG_WPS_ER */
1538         return 0;
1539 #endif /* CONFIG_WPS_ER */
1540 }
1541
1542
1543 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1544 {
1545 #ifdef CONFIG_WPS_ER
1546         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1547         wpa_s->wps_er = NULL;
1548 #endif /* CONFIG_WPS_ER */
1549         return 0;
1550 }
1551
1552
1553 #ifdef CONFIG_WPS_ER
1554 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1555                         const char *uuid, const char *pin)
1556 {
1557         u8 u[UUID_LEN];
1558         int any = 0;
1559
1560         if (os_strcmp(uuid, "any") == 0)
1561                 any = 1;
1562         else if (uuid_str2bin(uuid, u))
1563                 return -1;
1564         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1565                                      any ? NULL : u,
1566                                      (const u8 *) pin, os_strlen(pin), 300);
1567 }
1568
1569
1570 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1571 {
1572         u8 u[UUID_LEN];
1573
1574         if (uuid_str2bin(uuid, u))
1575                 return -1;
1576         return wps_er_pbc(wpa_s->wps_er, u);
1577 }
1578
1579
1580 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1581                       const char *pin)
1582 {
1583         u8 u[UUID_LEN];
1584
1585         if (uuid_str2bin(uuid, u))
1586                 return -1;
1587         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1588                             os_strlen(pin));
1589 }
1590
1591
1592 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1593                            int id)
1594 {
1595         u8 u[UUID_LEN];
1596         struct wpa_ssid *ssid;
1597         struct wps_credential cred;
1598
1599         if (uuid_str2bin(uuid, u))
1600                 return -1;
1601         ssid = wpa_config_get_network(wpa_s->conf, id);
1602         if (ssid == NULL || ssid->ssid == NULL)
1603                 return -1;
1604
1605         os_memset(&cred, 0, sizeof(cred));
1606         if (ssid->ssid_len > 32)
1607                 return -1;
1608         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1609         cred.ssid_len = ssid->ssid_len;
1610         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1611                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1612                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1613                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1614                         cred.encr_type = WPS_ENCR_AES;
1615                 else
1616                         cred.encr_type = WPS_ENCR_TKIP;
1617                 if (ssid->passphrase) {
1618                         cred.key_len = os_strlen(ssid->passphrase);
1619                         if (cred.key_len >= 64)
1620                                 return -1;
1621                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1622                 } else if (ssid->psk_set) {
1623                         cred.key_len = 32;
1624                         os_memcpy(cred.key, ssid->psk, 32);
1625                 } else
1626                         return -1;
1627         } else {
1628                 cred.auth_type = WPS_AUTH_OPEN;
1629                 cred.encr_type = WPS_ENCR_NONE;
1630         }
1631         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1632 }
1633
1634
1635 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1636                        const char *pin, struct wps_new_ap_settings *settings)
1637 {
1638         u8 u[UUID_LEN];
1639         struct wps_credential cred;
1640         size_t len;
1641
1642         if (uuid_str2bin(uuid, u))
1643                 return -1;
1644         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1645             settings->encr == NULL || settings->key_hex == NULL)
1646                 return -1;
1647
1648         os_memset(&cred, 0, sizeof(cred));
1649         len = os_strlen(settings->ssid_hex);
1650         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1651             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1652                 return -1;
1653         cred.ssid_len = len / 2;
1654
1655         len = os_strlen(settings->key_hex);
1656         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1657             hexstr2bin(settings->key_hex, cred.key, len / 2))
1658                 return -1;
1659         cred.key_len = len / 2;
1660
1661         if (os_strcmp(settings->auth, "OPEN") == 0)
1662                 cred.auth_type = WPS_AUTH_OPEN;
1663         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1664                 cred.auth_type = WPS_AUTH_WPAPSK;
1665         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1666                 cred.auth_type = WPS_AUTH_WPA2PSK;
1667         else
1668                 return -1;
1669
1670         if (os_strcmp(settings->encr, "NONE") == 0)
1671                 cred.encr_type = WPS_ENCR_NONE;
1672         else if (os_strcmp(settings->encr, "WEP") == 0)
1673                 cred.encr_type = WPS_ENCR_WEP;
1674         else if (os_strcmp(settings->encr, "TKIP") == 0)
1675                 cred.encr_type = WPS_ENCR_TKIP;
1676         else if (os_strcmp(settings->encr, "CCMP") == 0)
1677                 cred.encr_type = WPS_ENCR_AES;
1678         else
1679                 return -1;
1680
1681         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1682                              os_strlen(pin), &cred);
1683 }
1684
1685
1686 #ifdef CONFIG_WPS_NFC
1687 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1688                                              int ndef, const char *uuid)
1689 {
1690         struct wpabuf *ret;
1691         u8 u[UUID_LEN];
1692
1693         if (!wpa_s->wps_er)
1694                 return NULL;
1695
1696         if (uuid_str2bin(uuid, u))
1697                 return NULL;
1698
1699         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1700         if (ndef && ret) {
1701                 struct wpabuf *tmp;
1702                 tmp = ndef_build_wifi(ret);
1703                 wpabuf_free(ret);
1704                 if (tmp == NULL)
1705                         return NULL;
1706                 ret = tmp;
1707         }
1708
1709         return ret;
1710 }
1711 #endif /* CONFIG_WPS_NFC */
1712
1713
1714 static int callbacks_pending = 0;
1715
1716 static void wpas_wps_terminate_cb(void *ctx)
1717 {
1718         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1719         if (--callbacks_pending <= 0)
1720                 eloop_terminate();
1721 }
1722 #endif /* CONFIG_WPS_ER */
1723
1724
1725 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1726 {
1727 #ifdef CONFIG_WPS_ER
1728         if (wpa_s->wps_er) {
1729                 callbacks_pending++;
1730                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1731                 wpa_s->wps_er = NULL;
1732                 return 1;
1733         }
1734 #endif /* CONFIG_WPS_ER */
1735         return 0;
1736 }
1737
1738
1739 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1740 {
1741         struct wpa_ssid *ssid;
1742
1743         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1744                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1745                         return 1;
1746         }
1747
1748         return 0;
1749 }
1750
1751
1752 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1753 {
1754         struct wps_context *wps = wpa_s->wps;
1755
1756         if (wps == NULL)
1757                 return;
1758
1759         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1760                 wps->config_methods = wps_config_methods_str2bin(
1761                         wpa_s->conf->config_methods);
1762                 if ((wps->config_methods &
1763                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1764                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1765                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1766                                    "config methods are not allowed at the "
1767                                    "same time");
1768                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1769                 }
1770         }
1771         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1772         wps->dev.config_methods = wps->config_methods;
1773
1774         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1775                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1776                           WPS_DEV_TYPE_LEN);
1777
1778         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1779                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1780                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1781                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1782         }
1783
1784         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1785                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1786
1787         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1788                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1789
1790         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1791                 wpas_wps_set_uuid(wpa_s, wps);
1792
1793         if (wpa_s->conf->changed_parameters &
1794             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1795                 /* Update pointers to make sure they refer current values */
1796                 wps->dev.device_name = wpa_s->conf->device_name;
1797                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1798                 wps->dev.model_name = wpa_s->conf->model_name;
1799                 wps->dev.model_number = wpa_s->conf->model_number;
1800                 wps->dev.serial_number = wpa_s->conf->serial_number;
1801         }
1802 }
1803
1804
1805 #ifdef CONFIG_WPS_NFC
1806
1807 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1808 {
1809         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1810                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1811                                  &wpa_s->conf->wps_nfc_dh_privkey,
1812                                  &wpa_s->conf->wps_nfc_dev_pw);
1813 }
1814
1815
1816 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1817 {
1818         struct wps_context *wps = wpa_s->wps;
1819         char pw[32 * 2 + 1];
1820
1821         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1822             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1823             wpa_s->conf->wps_nfc_dev_pw == NULL)
1824                 return -1;
1825
1826         dh5_free(wps->dh_ctx);
1827         wpabuf_free(wps->dh_pubkey);
1828         wpabuf_free(wps->dh_privkey);
1829         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1830         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1831         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1832                 wps->dh_ctx = NULL;
1833                 wpabuf_free(wps->dh_pubkey);
1834                 wps->dh_pubkey = NULL;
1835                 wpabuf_free(wps->dh_privkey);
1836                 wps->dh_privkey = NULL;
1837                 return -1;
1838         }
1839         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1840         if (wps->dh_ctx == NULL)
1841                 return -1;
1842
1843         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1844                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1845                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1846         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1847                                   wpa_s->conf->wps_nfc_dev_pw_id);
1848 }
1849
1850
1851 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1852                              struct wps_parse_attr *attr)
1853 {
1854         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1855                 return -1;
1856
1857         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1858                 return 0;
1859
1860         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1861                    "based on the received credential added");
1862         wpa_s->normal_scans = 0;
1863         wpa_supplicant_reinit_autoscan(wpa_s);
1864         wpa_s->disconnected = 0;
1865         wpa_s->reassociate = 1;
1866         wpa_supplicant_req_scan(wpa_s, 0, 0);
1867
1868         return 0;
1869 }
1870
1871
1872 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1873                                            struct wps_parse_attr *attr)
1874 {
1875         return wps_registrar_add_nfc_password_token(
1876                 wpa_s->wps->registrar, attr->oob_dev_password,
1877                 attr->oob_dev_password_len);
1878 }
1879
1880
1881 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1882                                     const struct wpabuf *wps)
1883 {
1884         struct wps_parse_attr attr;
1885
1886         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1887
1888         if (wps_parse_msg(wps, &attr)) {
1889                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1890                 return -1;
1891         }
1892
1893         if (attr.num_cred)
1894                 return wpas_wps_use_cred(wpa_s, &attr);
1895
1896 #ifdef CONFIG_WPS_ER
1897         if (attr.oob_dev_password)
1898                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1899 #endif /* CONFIG_WPS_ER */
1900
1901         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1902         return -1;
1903 }
1904
1905
1906 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1907                           const struct wpabuf *data)
1908 {
1909         const struct wpabuf *wps = data;
1910         struct wpabuf *tmp = NULL;
1911         int ret;
1912
1913         if (wpabuf_len(data) < 4)
1914                 return -1;
1915
1916         if (*wpabuf_head_u8(data) != 0x10) {
1917                 /* Assume this contains full NDEF record */
1918                 tmp = ndef_parse_wifi(data);
1919                 if (tmp == NULL) {
1920                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1921                         return -1;
1922                 }
1923                 wps = tmp;
1924         }
1925
1926         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1927         wpabuf_free(tmp);
1928         return ret;
1929 }
1930
1931 #endif /* CONFIG_WPS_NFC */
1932
1933
1934 extern int wpa_debug_level;
1935
1936 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
1937 {
1938         size_t i;
1939         struct os_time now;
1940
1941         if (wpa_debug_level > MSG_DEBUG)
1942                 return;
1943
1944         if (wpa_s->wps_ap == NULL)
1945                 return;
1946
1947         os_get_time(&now);
1948
1949         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1950                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1951                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
1952
1953                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
1954                            "tries=%d last_attempt=%d sec ago blacklist=%d",
1955                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
1956                            ap->last_attempt.sec > 0 ?
1957                            (int) now.sec - (int) ap->last_attempt.sec : -1,
1958                            e ? e->count : 0);
1959         }
1960 }
1961
1962
1963 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
1964                                                  const u8 *bssid)
1965 {
1966         size_t i;
1967
1968         if (wpa_s->wps_ap == NULL)
1969                 return NULL;
1970
1971         for (i = 0; i < wpa_s->num_wps_ap; i++) {
1972                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1973                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
1974                         return ap;
1975         }
1976
1977         return NULL;
1978 }
1979
1980
1981 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
1982                                         struct wpa_scan_res *res)
1983 {
1984         struct wpabuf *wps;
1985         enum wps_ap_info_type type;
1986         struct wps_ap_info *ap;
1987         int r;
1988
1989         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
1990                 return;
1991
1992         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
1993         if (wps == NULL)
1994                 return;
1995
1996         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
1997         if (r == 2)
1998                 type = WPS_AP_SEL_REG_OUR;
1999         else if (r == 1)
2000                 type = WPS_AP_SEL_REG;
2001         else
2002                 type = WPS_AP_NOT_SEL_REG;
2003
2004         wpabuf_free(wps);
2005
2006         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2007         if (ap) {
2008                 if (ap->type != type) {
2009                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2010                                    " changed type %d -> %d",
2011                                    MAC2STR(res->bssid), ap->type, type);
2012                         ap->type = type;
2013                 }
2014                 return;
2015         }
2016
2017         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2018                               sizeof(struct wps_ap_info));
2019         if (ap == NULL)
2020                 return;
2021
2022         wpa_s->wps_ap = ap;
2023         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2024         wpa_s->num_wps_ap++;
2025
2026         os_memset(ap, 0, sizeof(*ap));
2027         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2028         ap->type = type;
2029         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2030                    MAC2STR(ap->bssid), ap->type);
2031 }
2032
2033
2034 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2035                              struct wpa_scan_results *scan_res)
2036 {
2037         size_t i;
2038
2039         for (i = 0; i < scan_res->num; i++)
2040                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2041
2042         wpas_wps_dump_ap_info(wpa_s);
2043 }
2044
2045
2046 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2047 {
2048         struct wps_ap_info *ap;
2049         if (!wpa_s->wps_ap_iter)
2050                 return;
2051         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2052         if (ap == NULL)
2053                 return;
2054         ap->tries++;
2055         os_get_time(&ap->last_attempt);
2056 }