wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "uuid.h"
  20 #include "crypto/dh_group5.h"
  21 #include "common/ieee802_11_defs.h"
  22 #include "common/ieee802_11_common.h"
  23 #include "common/wpa_common.h"
  24 #include "common/wpa_ctrl.h"
  25 #include "eap_common/eap_wsc_common.h"
  26 #include "eap_peer/eap.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "config.h"
  29 #include "wpa_supplicant_i.h"
  30 #include "driver_i.h"
  31 #include "notify.h"
  32 #include "blacklist.h"
  33 #include "bss.h"
  34 #include "scan.h"
  35 #include "ap.h"
  36 #include "p2p/p2p.h"
  37 #include "p2p_supplicant.h"
  38 #include "wps_supplicant.h"
  39
  40
  41 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  42 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  43 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  44
  45 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  46 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  47
  48
  49 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  50 {
  51         if (!wpa_s->wps_success &&
  52             wpa_s->current_ssid &&
  53             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  54                 const u8 *bssid = wpa_s->bssid;
  55                 if (is_zero_ether_addr(bssid))
  56                         bssid = wpa_s->pending_bssid;
  57
  58                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  59                            " did not succeed - continue trying to find "
  60                            "suitable AP", MAC2STR(bssid));
  61                 wpa_blacklist_add(wpa_s, bssid);
  62
  63                 wpa_supplicant_deauthenticate(wpa_s,
  64                                               WLAN_REASON_DEAUTH_LEAVING);
  65                 wpa_s->reassociate = 1;
  66                 wpa_supplicant_req_scan(wpa_s,
  67                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  68                 wpa_s->blacklist_cleared = 0;
  69                 return 1;
  70         }
  71
  72         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  73
  74         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  75             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  76                 int disabled = wpa_s->current_ssid->disabled;
  77                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  78                            "try to associate with the received credential");
  79                 wpa_supplicant_deauthenticate(wpa_s,
  80                                               WLAN_REASON_DEAUTH_LEAVING);
  81                 if (disabled) {
  82                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  83                                    "disabled - wait for user to enable");
  84                         return 1;
  85                 }
  86                 wpa_s->after_wps = 5;
  87                 wpa_s->wps_freq = wpa_s->assoc_freq;
  88                 wpa_s->reassociate = 1;
  89                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  90                 return 1;
  91         }
  92
  93         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  94                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  95                            "for external credential processing");
  96                 wpas_clear_wps(wpa_s);
  97                 wpa_supplicant_deauthenticate(wpa_s,
  98                                               WLAN_REASON_DEAUTH_LEAVING);
  99                 return 1;
 100         }
 101
 102         return 0;
 103 }
 104
 105
 106 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 107                                          struct wpa_ssid *ssid,
 108                                          const struct wps_credential *cred)
 109 {
 110         struct wpa_driver_capa capa;
 111         struct wpa_bss *bss;
 112         const u8 *ie;
 113         struct wpa_ie_data adv;
 114         int wpa2 = 0, ccmp = 0;
 115
 116         /*
 117          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 118          * case they are configured for mixed mode operation (WPA+WPA2 and
 119          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 120          * actually supports stronger security and select that if the client
 121          * has support for it, too.
 122          */
 123
 124         if (wpa_drv_get_capa(wpa_s, &capa))
 125                 return; /* Unknown what driver supports */
 126
 127         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 128         if (bss == NULL) {
 129                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 130                            "table - use credential as-is");
 131                 return;
 132         }
 133
 134         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 135
 136         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 137         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 138                 wpa2 = 1;
 139                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 140                         ccmp = 1;
 141         } else {
 142                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 143                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 144                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 145                         ccmp = 1;
 146         }
 147
 148         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 149             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 150                 /*
 151                  * TODO: This could be the initial AP configuration and the
 152                  * Beacon contents could change shortly. Should request a new
 153                  * scan and delay addition of the network until the updated
 154                  * scan results are available.
 155                  */
 156                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 157                            "support - use credential as-is");
 158                 return;
 159         }
 160
 161         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 162             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 163             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 164                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 165                            "based on scan results");
 166                 if (wpa_s->conf->ap_scan == 1)
 167                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 168                 else
 169                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 170         }
 171
 172         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 173             (ssid->proto & WPA_PROTO_WPA) &&
 174             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 175                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 176                            "based on scan results");
 177                 if (wpa_s->conf->ap_scan == 1)
 178                         ssid->proto |= WPA_PROTO_RSN;
 179                 else
 180                         ssid->proto = WPA_PROTO_RSN;
 181         }
 182 }
 183
 184
 185 static int wpa_supplicant_wps_cred(void *ctx,
 186                                    const struct wps_credential *cred)
 187 {
 188         struct wpa_supplicant *wpa_s = ctx;
 189         struct wpa_ssid *ssid = wpa_s->current_ssid;
 190         u8 key_idx = 0;
 191         u16 auth_type;
 192         int registrar = 0;
 193
 194         if ((wpa_s->conf->wps_cred_processing == 1 ||
 195              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 196                 size_t blen = cred->cred_attr_len * 2 + 1;
 197                 char *buf = os_malloc(blen);
 198                 if (buf) {
 199                         wpa_snprintf_hex(buf, blen,
 200                                          cred->cred_attr, cred->cred_attr_len);
 201                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 202                                 WPS_EVENT_CRED_RECEIVED, buf);
 203                         os_free(buf);
 204                 }
 205
 206                 wpas_notify_wps_credential(wpa_s, cred);
 207         } else
 208                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 209
 210         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 211                         cred->cred_attr, cred->cred_attr_len);
 212
 213         if (wpa_s->conf->wps_cred_processing == 1)
 214                 return 0;
 215
 216         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 217         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 218                    cred->auth_type);
 219         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 220         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 221         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 222                         cred->key, cred->key_len);
 223         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 224                    MAC2STR(cred->mac_addr));
 225
 226         auth_type = cred->auth_type;
 227         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 228                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 229                            "auth_type into WPA2PSK");
 230                 auth_type = WPS_AUTH_WPA2PSK;
 231         }
 232
 233         if (auth_type != WPS_AUTH_OPEN &&
 234             auth_type != WPS_AUTH_SHARED &&
 235             auth_type != WPS_AUTH_WPAPSK &&
 236             auth_type != WPS_AUTH_WPA2PSK) {
 237                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 238                            "unsupported authentication type 0x%x",
 239                            auth_type);
 240                 return 0;
 241         }
 242
 243         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 244                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 245                            "on the received credential");
 246                 if (ssid->eap.identity &&
 247                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 248                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 249                               WSC_ID_REGISTRAR_LEN) == 0)
 250                         registrar = 1;
 251                 os_free(ssid->eap.identity);
 252                 ssid->eap.identity = NULL;
 253                 ssid->eap.identity_len = 0;
 254                 os_free(ssid->eap.phase1);
 255                 ssid->eap.phase1 = NULL;
 256                 os_free(ssid->eap.eap_methods);
 257                 ssid->eap.eap_methods = NULL;
 258                 if (!ssid->p2p_group)
 259                         ssid->temporary = 0;
 260         } else {
 261                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 262                            "received credential");
 263                 ssid = wpa_config_add_network(wpa_s->conf);
 264                 if (ssid == NULL)
 265                         return -1;
 266                 wpas_notify_network_added(wpa_s, ssid);
 267         }
 268
 269         wpa_config_set_network_defaults(ssid);
 270
 271         os_free(ssid->ssid);
 272         ssid->ssid = os_malloc(cred->ssid_len);
 273         if (ssid->ssid) {
 274                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 275                 ssid->ssid_len = cred->ssid_len;
 276         }
 277
 278         switch (cred->encr_type) {
 279         case WPS_ENCR_NONE:
 280                 break;
 281         case WPS_ENCR_WEP:
 282                 if (cred->key_len <= 0)
 283                         break;
 284                 if (cred->key_len != 5 && cred->key_len != 13 &&
 285                     cred->key_len != 10 && cred->key_len != 26) {
 286                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 287                                    "%lu", (unsigned long) cred->key_len);
 288                         return -1;
 289                 }
 290                 if (cred->key_idx > NUM_WEP_KEYS) {
 291                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 292                                    cred->key_idx);
 293                         return -1;
 294                 }
 295                 if (cred->key_idx)
 296                         key_idx = cred->key_idx - 1;
 297                 if (cred->key_len == 10 || cred->key_len == 26) {
 298                         if (hexstr2bin((char *) cred->key,
 299                                        ssid->wep_key[key_idx],
 300                                        cred->key_len / 2) < 0) {
 301                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 302                                            "%d", key_idx);
 303                                 return -1;
 304                         }
 305                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 306                 } else {
 307                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 308                                   cred->key_len);
 309                         ssid->wep_key_len[key_idx] = cred->key_len;
 310                 }
 311                 ssid->wep_tx_keyidx = key_idx;
 312                 break;
 313         case WPS_ENCR_TKIP:
 314                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 315                 break;
 316         case WPS_ENCR_AES:
 317                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 318                 break;
 319         }
 320
 321         switch (auth_type) {
 322         case WPS_AUTH_OPEN:
 323                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 324                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 325                 ssid->proto = 0;
 326 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 327                 if (registrar) {
 328                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 329                                 "id=%d - Credentials for an open "
 330                                 "network disabled by default - use "
 331                                 "'select_network %d' to enable",
 332                                 ssid->id, ssid->id);
 333                         ssid->disabled = 1;
 334                 }
 335 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 336                 break;
 337         case WPS_AUTH_SHARED:
 338                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 339                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 340                 ssid->proto = 0;
 341                 break;
 342         case WPS_AUTH_WPAPSK:
 343                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 344                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 345                 ssid->proto = WPA_PROTO_WPA;
 346                 break;
 347         case WPS_AUTH_WPA:
 348                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 349                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 350                 ssid->proto = WPA_PROTO_WPA;
 351                 break;
 352         case WPS_AUTH_WPA2:
 353                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 354                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 355                 ssid->proto = WPA_PROTO_RSN;
 356                 break;
 357         case WPS_AUTH_WPA2PSK:
 358                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 359                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 360                 ssid->proto = WPA_PROTO_RSN;
 361                 break;
 362         }
 363
 364         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 365                 if (cred->key_len == 2 * PMK_LEN) {
 366                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 367                                        PMK_LEN)) {
 368                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 369                                            "Key");
 370                                 return -1;
 371                         }
 372                         ssid->psk_set = 1;
 373                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 374                         os_free(ssid->passphrase);
 375                         ssid->passphrase = os_malloc(cred->key_len + 1);
 376                         if (ssid->passphrase == NULL)
 377                                 return -1;
 378                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 379                         ssid->passphrase[cred->key_len] = '\0';
 380                         wpa_config_update_psk(ssid);
 381                 } else {
 382                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 383                                    "length %lu",
 384                                    (unsigned long) cred->key_len);
 385                         return -1;
 386                 }
 387         }
 388
 389         wpas_wps_security_workaround(wpa_s, ssid, cred);
 390
 391 #ifndef CONFIG_NO_CONFIG_WRITE
 392         if (wpa_s->conf->update_config &&
 393             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 394                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 395                 return -1;
 396         }
 397 #endif /* CONFIG_NO_CONFIG_WRITE */
 398
 399         return 0;
 400 }
 401
 402
 403 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 404                                          struct wps_event_m2d *m2d)
 405 {
 406         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 407                 "dev_password_id=%d config_error=%d",
 408                 m2d->dev_password_id, m2d->config_error);
 409         wpas_notify_wps_event_m2d(wpa_s, m2d);
 410 }
 411
 412
 413 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 414                                           struct wps_event_fail *fail)
 415 {
 416         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d",
 417                 fail->msg, fail->config_error);
 418         if (wpa_s->parent && wpa_s->parent != wpa_s)
 419                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 420                         "msg=%d config_error=%d",
 421                         fail->msg, fail->config_error);
 422         wpas_clear_wps(wpa_s);
 423         wpas_notify_wps_event_fail(wpa_s, fail);
 424 }
 425
 426
 427 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 428 {
 429         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 430         wpa_s->wps_success = 1;
 431         wpas_notify_wps_event_success(wpa_s);
 432 #ifdef CONFIG_P2P
 433         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 434 #endif /* CONFIG_P2P */
 435 }
 436
 437
 438 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 439                                                struct wps_event_er_ap *ap)
 440 {
 441         char uuid_str[100];
 442         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 443
 444         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 445         if (ap->pri_dev_type)
 446                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 447                                      sizeof(dev_type));
 448         else
 449                 dev_type[0] = '\0';
 450
 451         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 452                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 453                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 454                 ap->friendly_name ? ap->friendly_name : "",
 455                 ap->manufacturer ? ap->manufacturer : "",
 456                 ap->model_description ? ap->model_description : "",
 457                 ap->model_name ? ap->model_name : "",
 458                 ap->manufacturer_url ? ap->manufacturer_url : "",
 459                 ap->model_url ? ap->model_url : "");
 460 }
 461
 462
 463 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 464                                                   struct wps_event_er_ap *ap)
 465 {
 466         char uuid_str[100];
 467         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 468         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 469 }
 470
 471
 472 static void wpa_supplicant_wps_event_er_enrollee_add(
 473         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 474 {
 475         char uuid_str[100];
 476         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 477
 478         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 479         if (enrollee->pri_dev_type)
 480                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 481                                      sizeof(dev_type));
 482         else
 483                 dev_type[0] = '\0';
 484
 485         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 486                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 487                 "|%s|%s|%s|%s|%s|",
 488                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 489                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 490                 enrollee->dev_name ? enrollee->dev_name : "",
 491                 enrollee->manufacturer ? enrollee->manufacturer : "",
 492                 enrollee->model_name ? enrollee->model_name : "",
 493                 enrollee->model_number ? enrollee->model_number : "",
 494                 enrollee->serial_number ? enrollee->serial_number : "");
 495 }
 496
 497
 498 static void wpa_supplicant_wps_event_er_enrollee_remove(
 499         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 500 {
 501         char uuid_str[100];
 502         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 503         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 504                 uuid_str, MAC2STR(enrollee->mac_addr));
 505 }
 506
 507
 508 static void wpa_supplicant_wps_event_er_ap_settings(
 509         struct wpa_supplicant *wpa_s,
 510         struct wps_event_er_ap_settings *ap_settings)
 511 {
 512         char uuid_str[100];
 513         char key_str[65];
 514         const struct wps_credential *cred = ap_settings->cred;
 515
 516         key_str[0] = '\0';
 517         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 518                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 519                         os_memcpy(key_str, cred->key, cred->key_len);
 520                         key_str[cred->key_len] = '\0';
 521                 }
 522         }
 523
 524         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 525         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 526         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 527                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 528                      "key=%s",
 529                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 530                      cred->auth_type, cred->encr_type, key_str);
 531 }
 532
 533
 534 static void wpa_supplicant_wps_event_er_set_sel_reg(
 535         struct wpa_supplicant *wpa_s,
 536         struct wps_event_er_set_selected_registrar *ev)
 537 {
 538         char uuid_str[100];
 539
 540         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 541         switch (ev->state) {
 542         case WPS_ER_SET_SEL_REG_START:
 543                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 544                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 545                         "sel_reg_config_methods=0x%x",
 546                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 547                         ev->sel_reg_config_methods);
 548                 break;
 549         case WPS_ER_SET_SEL_REG_DONE:
 550                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 551                         "uuid=%s state=DONE", uuid_str);
 552                 break;
 553         case WPS_ER_SET_SEL_REG_FAILED:
 554                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 555                         "uuid=%s state=FAILED", uuid_str);
 556                 break;
 557         }
 558 }
 559
 560
 561 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 562                                      union wps_event_data *data)
 563 {
 564         struct wpa_supplicant *wpa_s = ctx;
 565         switch (event) {
 566         case WPS_EV_M2D:
 567                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 568                 break;
 569         case WPS_EV_FAIL:
 570                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 571                 break;
 572         case WPS_EV_SUCCESS:
 573                 wpa_supplicant_wps_event_success(wpa_s);
 574                 break;
 575         case WPS_EV_PWD_AUTH_FAIL:
 576 #ifdef CONFIG_AP
 577                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 578                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 579 #endif /* CONFIG_AP */
 580                 break;
 581         case WPS_EV_PBC_OVERLAP:
 582                 break;
 583         case WPS_EV_PBC_TIMEOUT:
 584                 break;
 585         case WPS_EV_ER_AP_ADD:
 586                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 587                 break;
 588         case WPS_EV_ER_AP_REMOVE:
 589                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 590                 break;
 591         case WPS_EV_ER_ENROLLEE_ADD:
 592                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 593                                                          &data->enrollee);
 594                 break;
 595         case WPS_EV_ER_ENROLLEE_REMOVE:
 596                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 597                                                             &data->enrollee);
 598                 break;
 599         case WPS_EV_ER_AP_SETTINGS:
 600                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 601                                                         &data->ap_settings);
 602                 break;
 603         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 604                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 605                                                         &data->set_sel_reg);
 606                 break;
 607         }
 608 }
 609
 610
 611 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 612 {
 613         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 614             eap_is_wps_pin_enrollee(&ssid->eap))
 615                 return WPS_REQ_ENROLLEE;
 616         else
 617                 return WPS_REQ_REGISTRAR;
 618 }
 619
 620
 621 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 622 {
 623         int id;
 624         struct wpa_ssid *ssid, *remove_ssid = NULL;
 625
 626         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 627
 628         /* Remove any existing WPS network from configuration */
 629         ssid = wpa_s->conf->ssid;
 630         while (ssid) {
 631                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 632                         if (ssid == wpa_s->current_ssid) {
 633                                 wpa_s->current_ssid = NULL;
 634                                 if (ssid != NULL)
 635                                         wpas_notify_network_changed(wpa_s);
 636                         }
 637                         id = ssid->id;
 638                         remove_ssid = ssid;
 639                 } else
 640                         id = -1;
 641                 ssid = ssid->next;
 642                 if (id >= 0) {
 643                         wpas_notify_network_removed(wpa_s, remove_ssid);
 644                         wpa_config_remove_network(wpa_s->conf, id);
 645                 }
 646         }
 647 }
 648
 649
 650 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 651 {
 652         struct wpa_supplicant *wpa_s = eloop_ctx;
 653         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 654                 "out");
 655         wpas_clear_wps(wpa_s);
 656 }
 657
 658
 659 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 660                                               int registrar, const u8 *bssid)
 661 {
 662         struct wpa_ssid *ssid;
 663
 664         ssid = wpa_config_add_network(wpa_s->conf);
 665         if (ssid == NULL)
 666                 return NULL;
 667         wpas_notify_network_added(wpa_s, ssid);
 668         wpa_config_set_network_defaults(ssid);
 669         ssid->temporary = 1;
 670         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 671             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 672             wpa_config_set(ssid, "identity", registrar ?
 673                            "\"" WSC_ID_REGISTRAR "\"" :
 674                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 675                 wpas_notify_network_removed(wpa_s, ssid);
 676                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 677                 return NULL;
 678         }
 679
 680         if (bssid) {
 681 #ifndef CONFIG_P2P
 682                 struct wpa_bss *bss;
 683                 int count = 0;
 684 #endif /* CONFIG_P2P */
 685
 686                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 687                 ssid->bssid_set = 1;
 688
 689                 /*
 690                  * Note: With P2P, the SSID may change at the time the WPS
 691                  * provisioning is started, so better not filter the AP based
 692                  * on the current SSID in the scan results.
 693                  */
 694 #ifndef CONFIG_P2P
 695                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 696                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 697                                 continue;
 698
 699                         os_free(ssid->ssid);
 700                         ssid->ssid = os_malloc(bss->ssid_len);
 701                         if (ssid->ssid == NULL)
 702                                 break;
 703                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 704                         ssid->ssid_len = bss->ssid_len;
 705                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 706                                           "scan results",
 707                                           ssid->ssid, ssid->ssid_len);
 708                         count++;
 709                 }
 710
 711                 if (count > 1) {
 712                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 713                                    "for the AP; use wildcard");
 714                         os_free(ssid->ssid);
 715                         ssid->ssid = NULL;
 716                         ssid->ssid_len = 0;
 717                 }
 718 #endif /* CONFIG_P2P */
 719         }
 720
 721         return ssid;
 722 }
 723
 724
 725 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 726                              struct wpa_ssid *selected)
 727 {
 728         struct wpa_ssid *ssid;
 729
 730         /* Mark all other networks disabled and trigger reassociation */
 731         ssid = wpa_s->conf->ssid;
 732         while (ssid) {
 733                 int was_disabled = ssid->disabled;
 734                 ssid->disabled = ssid != selected;
 735                 if (was_disabled != ssid->disabled)
 736                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 737                 ssid = ssid->next;
 738         }
 739         wpa_s->disconnected = 0;
 740         wpa_s->reassociate = 1;
 741         wpa_s->scan_runs = 0;
 742         wpa_s->wps_success = 0;
 743         wpa_s->blacklist_cleared = 0;
 744         wpa_supplicant_req_scan(wpa_s, 0, 0);
 745 }
 746
 747
 748 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 749                        int p2p_group)
 750 {
 751         struct wpa_ssid *ssid;
 752         wpas_clear_wps(wpa_s);
 753         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 754         if (ssid == NULL)
 755                 return -1;
 756         ssid->temporary = 1;
 757         ssid->p2p_group = p2p_group;
 758 #ifdef CONFIG_P2P
 759         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 760                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 761                 if (ssid->ssid) {
 762                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 763                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 764                                   ssid->ssid_len);
 765                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 766                                           "SSID", ssid->ssid, ssid->ssid_len);
 767                 }
 768         }
 769 #endif /* CONFIG_P2P */
 770         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 771         if (wpa_s->wps_fragment_size)
 772                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 773         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 774                                wpa_s, NULL);
 775         wpas_wps_reassoc(wpa_s, ssid);
 776         return 0;
 777 }
 778
 779
 780 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 781                        const char *pin, int p2p_group, u16 dev_pw_id)
 782 {
 783         struct wpa_ssid *ssid;
 784         char val[128];
 785         unsigned int rpin = 0;
 786
 787         wpas_clear_wps(wpa_s);
 788         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 789         if (ssid == NULL)
 790                 return -1;
 791         ssid->temporary = 1;
 792         ssid->p2p_group = p2p_group;
 793 #ifdef CONFIG_P2P
 794         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 795                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 796                 if (ssid->ssid) {
 797                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 798                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 799                                   ssid->ssid_len);
 800                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 801                                           "SSID", ssid->ssid, ssid->ssid_len);
 802                 }
 803         }
 804 #endif /* CONFIG_P2P */
 805         if (pin)
 806                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 807                             pin, dev_pw_id);
 808         else {
 809                 rpin = wps_generate_pin();
 810                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 811                             rpin, dev_pw_id);
 812         }
 813         wpa_config_set(ssid, "phase1", val, 0);
 814         if (wpa_s->wps_fragment_size)
 815                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 816         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 817                                wpa_s, NULL);
 818         wpas_wps_reassoc(wpa_s, ssid);
 819         return rpin;
 820 }
 821
 822
 823 /* Cancel the wps pbc/pin requests */
 824 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 825 {
 826 #ifdef CONFIG_AP
 827         if (wpa_s->ap_iface) {
 828                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 829                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 830         }
 831 #endif /* CONFIG_AP */
 832
 833         if (wpa_s->wpa_state == WPA_SCANNING) {
 834                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 835                 wpa_supplicant_cancel_scan(wpa_s);
 836                 wpas_clear_wps(wpa_s);
 837         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 838                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 839                            "deauthenticate");
 840                 wpa_supplicant_deauthenticate(wpa_s,
 841                                               WLAN_REASON_DEAUTH_LEAVING);
 842                 wpas_clear_wps(wpa_s);
 843         }
 844
 845         return 0;
 846 }
 847
 848
 849 #ifdef CONFIG_WPS_OOB
 850 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 851                        char *path, char *method, char *name)
 852 {
 853         struct wps_context *wps = wpa_s->wps;
 854         struct oob_device_data *oob_dev;
 855
 856         oob_dev = wps_get_oob_device(device_type);
 857         if (oob_dev == NULL)
 858                 return -1;
 859         oob_dev->device_path = path;
 860         oob_dev->device_name = name;
 861         wps->oob_conf.oob_method = wps_get_oob_method(method);
 862
 863         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 864                 /*
 865                  * Use pre-configured DH keys in order to be able to write the
 866                  * key hash into the OOB file.
 867                  */
 868                 wpabuf_free(wps->dh_pubkey);
 869                 wpabuf_free(wps->dh_privkey);
 870                 wps->dh_privkey = NULL;
 871                 wps->dh_pubkey = NULL;
 872                 dh5_free(wps->dh_ctx);
 873                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 874                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 875                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 876                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 877                                    "Diffie-Hellman handshake");
 878                         return -1;
 879                 }
 880         }
 881
 882         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 883                 wpas_clear_wps(wpa_s);
 884
 885         if (wps_process_oob(wps, oob_dev, 0) < 0)
 886                 return -1;
 887
 888         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 889              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 890             wpas_wps_start_pin(wpa_s, NULL,
 891                                wpabuf_head(wps->oob_conf.dev_password), 0,
 892                                DEV_PW_DEFAULT) < 0)
 893                         return -1;
 894
 895         return 0;
 896 }
 897 #endif /* CONFIG_WPS_OOB */
 898
 899
 900 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 901                        const char *pin, struct wps_new_ap_settings *settings)
 902 {
 903         struct wpa_ssid *ssid;
 904         char val[200];
 905         char *pos, *end;
 906         int res;
 907
 908         if (!pin)
 909                 return -1;
 910         wpas_clear_wps(wpa_s);
 911         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 912         if (ssid == NULL)
 913                 return -1;
 914         ssid->temporary = 1;
 915         pos = val;
 916         end = pos + sizeof(val);
 917         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 918         if (res < 0 || res >= end - pos)
 919                 return -1;
 920         pos += res;
 921         if (settings) {
 922                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 923                                   "new_encr=%s new_key=%s",
 924                                   settings->ssid_hex, settings->auth,
 925                                   settings->encr, settings->key_hex);
 926                 if (res < 0 || res >= end - pos)
 927                         return -1;
 928                 pos += res;
 929         }
 930         res = os_snprintf(pos, end - pos, "\"");
 931         if (res < 0 || res >= end - pos)
 932                 return -1;
 933         wpa_config_set(ssid, "phase1", val, 0);
 934         if (wpa_s->wps_fragment_size)
 935                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 936         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 937                                wpa_s, NULL);
 938         wpas_wps_reassoc(wpa_s, ssid);
 939         return 0;
 940 }
 941
 942
 943 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 944                                size_t psk_len)
 945 {
 946         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 947                    "STA " MACSTR, MAC2STR(mac_addr));
 948         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 949
 950         /* TODO */
 951
 952         return 0;
 953 }
 954
 955
 956 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 957                                    const struct wps_device_data *dev)
 958 {
 959         char uuid[40], txt[400];
 960         int len;
 961         char devtype[WPS_DEV_TYPE_BUFSIZE];
 962         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 963                 return;
 964         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 965         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 966                           " [%s|%s|%s|%s|%s|%s]",
 967                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 968                           dev->manufacturer, dev->model_name,
 969                           dev->model_number, dev->serial_number,
 970                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 971                                                sizeof(devtype)));
 972         if (len > 0 && len < (int) sizeof(txt))
 973                 wpa_printf(MSG_INFO, "%s", txt);
 974 }
 975
 976
 977 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 978                                     u16 sel_reg_config_methods)
 979 {
 980 #ifdef CONFIG_WPS_ER
 981         struct wpa_supplicant *wpa_s = ctx;
 982
 983         if (wpa_s->wps_er == NULL)
 984                 return;
 985         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
 986                    "dev_password_id=%u sel_reg_config_methods=0x%x",
 987                    sel_reg, dev_passwd_id, sel_reg_config_methods);
 988         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 989                            sel_reg_config_methods);
 990 #endif /* CONFIG_WPS_ER */
 991 }
 992
 993
 994 static u16 wps_fix_config_methods(u16 config_methods)
 995 {
 996 #ifdef CONFIG_WPS2
 997         if ((config_methods &
 998              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 999               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1000                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1001                            "virtual_display for WPS 2.0 compliance");
1002                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1003         }
1004         if ((config_methods &
1005              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1006               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1007                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1008                            "virtual_push_button for WPS 2.0 compliance");
1009                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1010         }
1011 #endif /* CONFIG_WPS2 */
1012
1013         return config_methods;
1014 }
1015
1016
1017 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1018 {
1019         struct wps_context *wps;
1020         struct wps_registrar_config rcfg;
1021
1022         wps = os_zalloc(sizeof(*wps));
1023         if (wps == NULL)
1024                 return -1;
1025
1026         wps->cred_cb = wpa_supplicant_wps_cred;
1027         wps->event_cb = wpa_supplicant_wps_event;
1028         wps->cb_ctx = wpa_s;
1029
1030         wps->dev.device_name = wpa_s->conf->device_name;
1031         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1032         wps->dev.model_name = wpa_s->conf->model_name;
1033         wps->dev.model_number = wpa_s->conf->model_number;
1034         wps->dev.serial_number = wpa_s->conf->serial_number;
1035         wps->config_methods =
1036                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1037         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1038             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1039                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1040                            "methods are not allowed at the same time");
1041                 os_free(wps);
1042                 return -1;
1043         }
1044         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1045         if (wpa_s->conf->device_type &&
1046             wps_dev_type_str2bin(wpa_s->conf->device_type,
1047                                  wps->dev.pri_dev_type) < 0) {
1048                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1049                 os_free(wps);
1050                 return -1;
1051         }
1052         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1053         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
1054         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1055         if (is_nil_uuid(wpa_s->conf->uuid)) {
1056                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1057                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
1058                             wps->uuid, WPS_UUID_LEN);
1059         } else
1060                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1061
1062         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1063         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1064
1065         os_memset(&rcfg, 0, sizeof(rcfg));
1066         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1067         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1068         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1069         rcfg.cb_ctx = wpa_s;
1070
1071         wps->registrar = wps_registrar_init(wps, &rcfg);
1072         if (wps->registrar == NULL) {
1073                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1074                 os_free(wps);
1075                 return -1;
1076         }
1077
1078         wpa_s->wps = wps;
1079
1080         return 0;
1081 }
1082
1083
1084 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1085 {
1086         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1087
1088         if (wpa_s->wps == NULL)
1089                 return;
1090
1091 #ifdef CONFIG_WPS_ER
1092         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1093         wpa_s->wps_er = NULL;
1094 #endif /* CONFIG_WPS_ER */
1095
1096         wps_registrar_deinit(wpa_s->wps->registrar);
1097         wpabuf_free(wpa_s->wps->dh_pubkey);
1098         wpabuf_free(wpa_s->wps->dh_privkey);
1099         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1100         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1101         os_free(wpa_s->wps->network_key);
1102         os_free(wpa_s->wps);
1103         wpa_s->wps = NULL;
1104 }
1105
1106
1107 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1108                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1109 {
1110         struct wpabuf *wps_ie;
1111
1112         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1113                 return -1;
1114
1115         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1116         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1117                 if (!wps_ie) {
1118                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1119                         return 0;
1120                 }
1121
1122                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1123                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1124                                    "without active PBC Registrar");
1125                         wpabuf_free(wps_ie);
1126                         return 0;
1127                 }
1128
1129                 /* TODO: overlap detection */
1130                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1131                            "(Active PBC)");
1132                 wpabuf_free(wps_ie);
1133                 return 1;
1134         }
1135
1136         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1137                 if (!wps_ie) {
1138                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1139                         return 0;
1140                 }
1141
1142                 /*
1143                  * Start with WPS APs that advertise our address as an
1144                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1145                  * allow any WPS AP after couple of scans since some APs do not
1146                  * set Selected Registrar attribute properly when using
1147                  * external Registrar.
1148                  */
1149                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1150                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1151                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1152                                            "without active PIN Registrar");
1153                                 wpabuf_free(wps_ie);
1154                                 return 0;
1155                         }
1156                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1157                 } else {
1158                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1159                                    "(Authorized MAC or Active PIN)");
1160                 }
1161                 wpabuf_free(wps_ie);
1162                 return 1;
1163         }
1164
1165         if (wps_ie) {
1166                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1167                 wpabuf_free(wps_ie);
1168                 return 1;
1169         }
1170
1171         return -1;
1172 }
1173
1174
1175 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1176                               struct wpa_ssid *ssid,
1177                               struct wpa_scan_res *bss)
1178 {
1179         struct wpabuf *wps_ie = NULL;
1180         int ret = 0;
1181
1182         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1183                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1184                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1185                         /* allow wildcard SSID for WPS PBC */
1186                         ret = 1;
1187                 }
1188         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1189                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1190                 if (wps_ie &&
1191                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1192                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1193                         /* allow wildcard SSID for WPS PIN */
1194                         ret = 1;
1195                 }
1196         }
1197
1198         if (!ret && ssid->bssid_set &&
1199             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1200                 /* allow wildcard SSID due to hardcoded BSSID match */
1201                 ret = 1;
1202         }
1203
1204 #ifdef CONFIG_WPS_STRICT
1205         if (wps_ie) {
1206                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1207                                                    0, bss->bssid) < 0)
1208                         ret = 0;
1209                 if (bss->beacon_ie_len) {
1210                         struct wpabuf *bcn_wps;
1211                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1212                                 bss, WPS_IE_VENDOR_TYPE);
1213                         if (bcn_wps == NULL) {
1214                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1215                                            "missing from AP Beacon");
1216                                 ret = 0;
1217                         } else {
1218                                 if (wps_validate_beacon(wps_ie) < 0)
1219                                         ret = 0;
1220                                 wpabuf_free(bcn_wps);
1221                         }
1222                 }
1223         }
1224 #endif /* CONFIG_WPS_STRICT */
1225
1226         wpabuf_free(wps_ie);
1227
1228         return ret;
1229 }
1230
1231
1232 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1233                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1234 {
1235         const u8 *sel_uuid, *uuid;
1236         struct wpabuf *wps_ie;
1237         int ret = 0;
1238         struct wpa_bss *bss;
1239
1240         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1241                 return 0;
1242
1243         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1244                    "present in scan results; selected BSSID " MACSTR,
1245                    MAC2STR(selected->bssid));
1246
1247         /* Make sure that only one AP is in active PBC mode */
1248         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1249         if (wps_ie) {
1250                 sel_uuid = wps_get_uuid_e(wps_ie);
1251                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1252                             sel_uuid, UUID_LEN);
1253         } else {
1254                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1255                            "WPS IE?!");
1256                 sel_uuid = NULL;
1257         }
1258
1259         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1260                 struct wpabuf *ie;
1261                 if (bss == selected)
1262                         continue;
1263                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1264                 if (!ie)
1265                         continue;
1266                 if (!wps_is_selected_pbc_registrar(ie)) {
1267                         wpabuf_free(ie);
1268                         continue;
1269                 }
1270                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1271                            MACSTR, MAC2STR(bss->bssid));
1272                 uuid = wps_get_uuid_e(ie);
1273                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1274                             uuid, UUID_LEN);
1275                 if (sel_uuid == NULL || uuid == NULL ||
1276                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1277                         ret = 1; /* PBC overlap */
1278                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1279                                 MACSTR " and " MACSTR,
1280                                 MAC2STR(selected->bssid),
1281                                 MAC2STR(bss->bssid));
1282                         wpabuf_free(ie);
1283                         break;
1284                 }
1285
1286                 /* TODO: verify that this is reasonable dual-band situation */
1287
1288                 wpabuf_free(ie);
1289         }
1290
1291         wpabuf_free(wps_ie);
1292
1293         return ret;
1294 }
1295
1296
1297 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1298 {
1299         struct wpa_bss *bss;
1300
1301         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1302                 return;
1303
1304         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1305                 struct wpabuf *ie;
1306                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1307                 if (!ie)
1308                         continue;
1309                 if (wps_is_selected_pbc_registrar(ie))
1310                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1311                                      WPS_EVENT_AP_AVAILABLE_PBC);
1312                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1313                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1314                                      WPS_EVENT_AP_AVAILABLE_AUTH);
1315                 else if (wps_is_selected_pin_registrar(ie))
1316                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1317                                      WPS_EVENT_AP_AVAILABLE_PIN);
1318                 else
1319                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1320                                      WPS_EVENT_AP_AVAILABLE);
1321                 wpabuf_free(ie);
1322                 break;
1323         }
1324 }
1325
1326
1327 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1328 {
1329         struct wpa_ssid *ssid;
1330
1331         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1332                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1333                         return 1;
1334         }
1335
1336         return 0;
1337 }
1338
1339
1340 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1341                               char *end)
1342 {
1343         struct wpabuf *wps_ie;
1344         int ret;
1345
1346         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1347         if (wps_ie == NULL)
1348                 return 0;
1349
1350         ret = wps_attr_text(wps_ie, buf, end);
1351         wpabuf_free(wps_ie);
1352         return ret;
1353 }
1354
1355
1356 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1357 {
1358 #ifdef CONFIG_WPS_ER
1359         if (wpa_s->wps_er) {
1360                 wps_er_refresh(wpa_s->wps_er);
1361                 return 0;
1362         }
1363         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1364         if (wpa_s->wps_er == NULL)
1365                 return -1;
1366         return 0;
1367 #else /* CONFIG_WPS_ER */
1368         return 0;
1369 #endif /* CONFIG_WPS_ER */
1370 }
1371
1372
1373 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1374 {
1375 #ifdef CONFIG_WPS_ER
1376         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1377         wpa_s->wps_er = NULL;
1378 #endif /* CONFIG_WPS_ER */
1379         return 0;
1380 }
1381
1382
1383 #ifdef CONFIG_WPS_ER
1384 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1385                         const char *uuid, const char *pin)
1386 {
1387         u8 u[UUID_LEN];
1388         int any = 0;
1389
1390         if (os_strcmp(uuid, "any") == 0)
1391                 any = 1;
1392         else if (uuid_str2bin(uuid, u))
1393                 return -1;
1394         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1395                                      any ? NULL : u,
1396                                      (const u8 *) pin, os_strlen(pin), 300);
1397 }
1398
1399
1400 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1401 {
1402         u8 u[UUID_LEN];
1403
1404         if (uuid_str2bin(uuid, u))
1405                 return -1;
1406         return wps_er_pbc(wpa_s->wps_er, u);
1407 }
1408
1409
1410 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1411                       const char *pin)
1412 {
1413         u8 u[UUID_LEN];
1414
1415         if (uuid_str2bin(uuid, u))
1416                 return -1;
1417         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1418                             os_strlen(pin));
1419 }
1420
1421
1422 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1423                            int id)
1424 {
1425         u8 u[UUID_LEN];
1426         struct wpa_ssid *ssid;
1427         struct wps_credential cred;
1428
1429         if (uuid_str2bin(uuid, u))
1430                 return -1;
1431         ssid = wpa_config_get_network(wpa_s->conf, id);
1432         if (ssid == NULL || ssid->ssid == NULL)
1433                 return -1;
1434
1435         os_memset(&cred, 0, sizeof(cred));
1436         if (ssid->ssid_len > 32)
1437                 return -1;
1438         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1439         cred.ssid_len = ssid->ssid_len;
1440         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1441                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1442                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1443                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1444                         cred.encr_type = WPS_ENCR_AES;
1445                 else
1446                         cred.encr_type = WPS_ENCR_TKIP;
1447                 if (ssid->passphrase) {
1448                         cred.key_len = os_strlen(ssid->passphrase);
1449                         if (cred.key_len >= 64)
1450                                 return -1;
1451                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1452                 } else if (ssid->psk_set) {
1453                         cred.key_len = 32;
1454                         os_memcpy(cred.key, ssid->psk, 32);
1455                 } else
1456                         return -1;
1457         } else {
1458                 cred.auth_type = WPS_AUTH_OPEN;
1459                 cred.encr_type = WPS_ENCR_NONE;
1460         }
1461         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1462 }
1463
1464
1465 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1466                        const char *pin, struct wps_new_ap_settings *settings)
1467 {
1468         u8 u[UUID_LEN];
1469         struct wps_credential cred;
1470         size_t len;
1471
1472         if (uuid_str2bin(uuid, u))
1473                 return -1;
1474         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1475             settings->encr == NULL || settings->key_hex == NULL)
1476                 return -1;
1477
1478         os_memset(&cred, 0, sizeof(cred));
1479         len = os_strlen(settings->ssid_hex);
1480         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1481             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1482                 return -1;
1483         cred.ssid_len = len / 2;
1484
1485         len = os_strlen(settings->key_hex);
1486         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1487             hexstr2bin(settings->key_hex, cred.key, len / 2))
1488                 return -1;
1489         cred.key_len = len / 2;
1490
1491         if (os_strcmp(settings->auth, "OPEN") == 0)
1492                 cred.auth_type = WPS_AUTH_OPEN;
1493         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1494                 cred.auth_type = WPS_AUTH_WPAPSK;
1495         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1496                 cred.auth_type = WPS_AUTH_WPA2PSK;
1497         else
1498                 return -1;
1499
1500         if (os_strcmp(settings->encr, "NONE") == 0)
1501                 cred.encr_type = WPS_ENCR_NONE;
1502         else if (os_strcmp(settings->encr, "WEP") == 0)
1503                 cred.encr_type = WPS_ENCR_WEP;
1504         else if (os_strcmp(settings->encr, "TKIP") == 0)
1505                 cred.encr_type = WPS_ENCR_TKIP;
1506         else if (os_strcmp(settings->encr, "CCMP") == 0)
1507                 cred.encr_type = WPS_ENCR_AES;
1508         else
1509                 return -1;
1510
1511         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1512                              os_strlen(pin), &cred);
1513 }
1514
1515
1516 static void wpas_wps_terminate_cb(void *ctx)
1517 {
1518         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1519         eloop_terminate();
1520 }
1521 #endif /* CONFIG_WPS_ER */
1522
1523
1524 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1525 {
1526 #ifdef CONFIG_WPS_ER
1527         if (wpa_s->wps_er) {
1528                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1529                 wpa_s->wps_er = NULL;
1530                 return 1;
1531         }
1532 #endif /* CONFIG_WPS_ER */
1533         return 0;
1534 }
1535
1536
1537 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1538 {
1539         struct wpa_ssid *ssid;
1540
1541         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1542                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1543                         return 1;
1544         }
1545
1546         return 0;
1547 }
1548
1549
1550 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1551 {
1552         struct wps_context *wps = wpa_s->wps;
1553
1554         if (wps == NULL)
1555                 return;
1556
1557         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1558                 wps->config_methods = wps_config_methods_str2bin(
1559                         wpa_s->conf->config_methods);
1560                 if ((wps->config_methods &
1561                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1562                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1563                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1564                                    "config methods are not allowed at the "
1565                                    "same time");
1566                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1567                 }
1568         }
1569         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1570
1571         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
1572                 if (wpa_s->conf->device_type &&
1573                     wps_dev_type_str2bin(wpa_s->conf->device_type,
1574                                          wps->dev.pri_dev_type) < 0)
1575                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1576         }
1577
1578         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1579                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1580
1581         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
1582                 if (is_nil_uuid(wpa_s->conf->uuid)) {
1583                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1584                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1585                                     "address", wps->uuid, WPS_UUID_LEN);
1586                 } else
1587                         os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1588         }
1589
1590         if (wpa_s->conf->changed_parameters &
1591             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1592                 /* Update pointers to make sure they refer current values */
1593                 wps->dev.device_name = wpa_s->conf->device_name;
1594                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1595                 wps->dev.model_name = wpa_s->conf->model_name;
1596                 wps->dev.model_number = wpa_s->conf->model_number;
1597                 wps->dev.serial_number = wpa_s->conf->serial_number;
1598         }
1599 }