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         if (cred->ap_channel)
 407                 wpa_s->wps_ap_channel = cred->ap_channel;
 408
 409 #ifndef CONFIG_NO_CONFIG_WRITE
 410         if (wpa_s->conf->update_config &&
 411             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 412                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 413                 return -1;
 414         }
 415 #endif /* CONFIG_NO_CONFIG_WRITE */
 416
 417         return 0;
 418 }
 419
 420
 421 #ifdef CONFIG_P2P
 422 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 423 {
 424         struct wpa_supplicant *wpa_s = eloop_ctx;
 425         wpas_p2p_notif_pbc_overlap(wpa_s);
 426 }
 427 #endif /* CONFIG_P2P */
 428
 429
 430 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 431                                          struct wps_event_m2d *m2d)
 432 {
 433         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 434                 "dev_password_id=%d config_error=%d",
 435                 m2d->dev_password_id, m2d->config_error);
 436         wpas_notify_wps_event_m2d(wpa_s, m2d);
 437 #ifdef CONFIG_P2P
 438         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 439                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 440                         "dev_password_id=%d config_error=%d",
 441                         m2d->dev_password_id, m2d->config_error);
 442         }
 443         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 444                 /*
 445                  * Notify P2P from eloop timeout to avoid issues with the
 446                  * interface getting removed while processing a message.
 447                  */
 448                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 449                                        NULL);
 450         }
 451 #endif /* CONFIG_P2P */
 452 }
 453
 454
 455 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 456         "No Error", /* WPS_EI_NO_ERROR */
 457         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 458         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 459 };
 460
 461 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 462                                           struct wps_event_fail *fail)
 463 {
 464         if (fail->error_indication > 0 &&
 465             fail->error_indication < NUM_WPS_EI_VALUES) {
 466                 wpa_msg(wpa_s, MSG_INFO,
 467                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 468                         fail->msg, fail->config_error, fail->error_indication,
 469                         wps_event_fail_reason[fail->error_indication]);
 470                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 471                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 472                                 "msg=%d config_error=%d reason=%d (%s)",
 473                                 fail->msg, fail->config_error,
 474                                 fail->error_indication,
 475                                 wps_event_fail_reason[fail->error_indication]);
 476         } else {
 477                 wpa_msg(wpa_s, MSG_INFO,
 478                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 479                         fail->msg, fail->config_error);
 480                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 481                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 482                                 "msg=%d config_error=%d",
 483                                 fail->msg, fail->config_error);
 484         }
 485         wpas_clear_wps(wpa_s);
 486         wpas_notify_wps_event_fail(wpa_s, fail);
 487 #ifdef CONFIG_P2P
 488         wpas_p2p_wps_failed(wpa_s, fail);
 489 #endif /* CONFIG_P2P */
 490 }
 491
 492
 493 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 494
 495 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 496 {
 497         struct wpa_ssid *ssid;
 498
 499         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 500
 501         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 502                 if (ssid->disabled_for_connect && ssid->disabled) {
 503                         ssid->disabled_for_connect = 0;
 504                         ssid->disabled = 0;
 505                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 506                 }
 507         }
 508 }
 509
 510
 511 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 512 {
 513         struct wpa_supplicant *wpa_s = eloop_ctx;
 514         /* Enable the networks disabled during wpas_wps_reassoc */
 515         wpas_wps_reenable_networks(wpa_s);
 516 }
 517
 518
 519 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 520 {
 521         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 522         wpa_s->wps_success = 1;
 523         wpas_notify_wps_event_success(wpa_s);
 524
 525         /*
 526          * Enable the networks disabled during wpas_wps_reassoc after 10
 527          * seconds. The 10 seconds timer is to allow the data connection to be
 528          * formed before allowing other networks to be selected.
 529          */
 530         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 531                                NULL);
 532
 533 #ifdef CONFIG_P2P
 534         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 535 #endif /* CONFIG_P2P */
 536 }
 537
 538
 539 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 540                                                struct wps_event_er_ap *ap)
 541 {
 542         char uuid_str[100];
 543         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 544
 545         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 546         if (ap->pri_dev_type)
 547                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 548                                      sizeof(dev_type));
 549         else
 550                 dev_type[0] = '\0';
 551
 552         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 553                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 554                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 555                 ap->friendly_name ? ap->friendly_name : "",
 556                 ap->manufacturer ? ap->manufacturer : "",
 557                 ap->model_description ? ap->model_description : "",
 558                 ap->model_name ? ap->model_name : "",
 559                 ap->manufacturer_url ? ap->manufacturer_url : "",
 560                 ap->model_url ? ap->model_url : "");
 561 }
 562
 563
 564 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 565                                                   struct wps_event_er_ap *ap)
 566 {
 567         char uuid_str[100];
 568         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 569         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 570 }
 571
 572
 573 static void wpa_supplicant_wps_event_er_enrollee_add(
 574         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 575 {
 576         char uuid_str[100];
 577         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 578
 579         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 580         if (enrollee->pri_dev_type)
 581                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 582                                      sizeof(dev_type));
 583         else
 584                 dev_type[0] = '\0';
 585
 586         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 587                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 588                 "|%s|%s|%s|%s|%s|",
 589                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 590                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 591                 enrollee->dev_name ? enrollee->dev_name : "",
 592                 enrollee->manufacturer ? enrollee->manufacturer : "",
 593                 enrollee->model_name ? enrollee->model_name : "",
 594                 enrollee->model_number ? enrollee->model_number : "",
 595                 enrollee->serial_number ? enrollee->serial_number : "");
 596 }
 597
 598
 599 static void wpa_supplicant_wps_event_er_enrollee_remove(
 600         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 601 {
 602         char uuid_str[100];
 603         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 604         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 605                 uuid_str, MAC2STR(enrollee->mac_addr));
 606 }
 607
 608
 609 static void wpa_supplicant_wps_event_er_ap_settings(
 610         struct wpa_supplicant *wpa_s,
 611         struct wps_event_er_ap_settings *ap_settings)
 612 {
 613         char uuid_str[100];
 614         char key_str[65];
 615         const struct wps_credential *cred = ap_settings->cred;
 616
 617         key_str[0] = '\0';
 618         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 619                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 620                         os_memcpy(key_str, cred->key, cred->key_len);
 621                         key_str[cred->key_len] = '\0';
 622                 }
 623         }
 624
 625         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 626         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 627         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 628                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 629                      "key=%s",
 630                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 631                      cred->auth_type, cred->encr_type, key_str);
 632 }
 633
 634
 635 static void wpa_supplicant_wps_event_er_set_sel_reg(
 636         struct wpa_supplicant *wpa_s,
 637         struct wps_event_er_set_selected_registrar *ev)
 638 {
 639         char uuid_str[100];
 640
 641         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 642         switch (ev->state) {
 643         case WPS_ER_SET_SEL_REG_START:
 644                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 645                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 646                         "sel_reg_config_methods=0x%x",
 647                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 648                         ev->sel_reg_config_methods);
 649                 break;
 650         case WPS_ER_SET_SEL_REG_DONE:
 651                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 652                         "uuid=%s state=DONE", uuid_str);
 653                 break;
 654         case WPS_ER_SET_SEL_REG_FAILED:
 655                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 656                         "uuid=%s state=FAILED", uuid_str);
 657                 break;
 658         }
 659 }
 660
 661
 662 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 663                                      union wps_event_data *data)
 664 {
 665         struct wpa_supplicant *wpa_s = ctx;
 666         switch (event) {
 667         case WPS_EV_M2D:
 668                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 669                 break;
 670         case WPS_EV_FAIL:
 671                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 672                 break;
 673         case WPS_EV_SUCCESS:
 674                 wpa_supplicant_wps_event_success(wpa_s);
 675                 break;
 676         case WPS_EV_PWD_AUTH_FAIL:
 677 #ifdef CONFIG_AP
 678                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 679                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 680 #endif /* CONFIG_AP */
 681                 break;
 682         case WPS_EV_PBC_OVERLAP:
 683                 break;
 684         case WPS_EV_PBC_TIMEOUT:
 685                 break;
 686         case WPS_EV_ER_AP_ADD:
 687                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 688                 break;
 689         case WPS_EV_ER_AP_REMOVE:
 690                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 691                 break;
 692         case WPS_EV_ER_ENROLLEE_ADD:
 693                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 694                                                          &data->enrollee);
 695                 break;
 696         case WPS_EV_ER_ENROLLEE_REMOVE:
 697                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 698                                                             &data->enrollee);
 699                 break;
 700         case WPS_EV_ER_AP_SETTINGS:
 701                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 702                                                         &data->ap_settings);
 703                 break;
 704         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 705                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 706                                                         &data->set_sel_reg);
 707                 break;
 708         case WPS_EV_AP_PIN_SUCCESS:
 709                 break;
 710         }
 711 }
 712
 713
 714 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 715 {
 716         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 717             eap_is_wps_pin_enrollee(&ssid->eap))
 718                 return WPS_REQ_ENROLLEE;
 719         else
 720                 return WPS_REQ_REGISTRAR;
 721 }
 722
 723
 724 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 725 {
 726         int id;
 727         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 728
 729         prev_current = wpa_s->current_ssid;
 730
 731         /* Enable the networks disabled during wpas_wps_reassoc */
 732         wpas_wps_reenable_networks(wpa_s);
 733
 734         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 735
 736         /* Remove any existing WPS network from configuration */
 737         ssid = wpa_s->conf->ssid;
 738         while (ssid) {
 739                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 740                         if (ssid == wpa_s->current_ssid) {
 741                                 wpa_s->current_ssid = NULL;
 742                                 if (ssid != NULL)
 743                                         wpas_notify_network_changed(wpa_s);
 744                         }
 745                         id = ssid->id;
 746                         remove_ssid = ssid;
 747                 } else
 748                         id = -1;
 749                 ssid = ssid->next;
 750                 if (id >= 0) {
 751                         if (prev_current == remove_ssid) {
 752                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 753                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 754                                                        NULL);
 755                         }
 756                         wpas_notify_network_removed(wpa_s, remove_ssid);
 757                         wpa_config_remove_network(wpa_s->conf, id);
 758                 }
 759         }
 760
 761         wpas_wps_clear_ap_info(wpa_s);
 762 }
 763
 764
 765 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 766 {
 767         struct wpa_supplicant *wpa_s = eloop_ctx;
 768         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 769                 "out");
 770         wpas_clear_wps(wpa_s);
 771 }
 772
 773
 774 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 775                                               int registrar, const u8 *bssid)
 776 {
 777         struct wpa_ssid *ssid;
 778
 779         ssid = wpa_config_add_network(wpa_s->conf);
 780         if (ssid == NULL)
 781                 return NULL;
 782         wpas_notify_network_added(wpa_s, ssid);
 783         wpa_config_set_network_defaults(ssid);
 784         ssid->temporary = 1;
 785         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 786             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 787             wpa_config_set(ssid, "identity", registrar ?
 788                            "\"" WSC_ID_REGISTRAR "\"" :
 789                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 790                 wpas_notify_network_removed(wpa_s, ssid);
 791                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 792                 return NULL;
 793         }
 794
 795         if (bssid) {
 796 #ifndef CONFIG_P2P
 797                 struct wpa_bss *bss;
 798                 int count = 0;
 799 #endif /* CONFIG_P2P */
 800
 801                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 802                 ssid->bssid_set = 1;
 803
 804                 /*
 805                  * Note: With P2P, the SSID may change at the time the WPS
 806                  * provisioning is started, so better not filter the AP based
 807                  * on the current SSID in the scan results.
 808                  */
 809 #ifndef CONFIG_P2P
 810                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 811                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 812                                 continue;
 813
 814                         os_free(ssid->ssid);
 815                         ssid->ssid = os_malloc(bss->ssid_len);
 816                         if (ssid->ssid == NULL)
 817                                 break;
 818                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 819                         ssid->ssid_len = bss->ssid_len;
 820                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 821                                           "scan results",
 822                                           ssid->ssid, ssid->ssid_len);
 823                         count++;
 824                 }
 825
 826                 if (count > 1) {
 827                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 828                                    "for the AP; use wildcard");
 829                         os_free(ssid->ssid);
 830                         ssid->ssid = NULL;
 831                         ssid->ssid_len = 0;
 832                 }
 833 #endif /* CONFIG_P2P */
 834         }
 835
 836         return ssid;
 837 }
 838
 839
 840 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 841                              struct wpa_ssid *selected, const u8 *bssid)
 842 {
 843         struct wpa_ssid *ssid;
 844         struct wpa_bss *bss;
 845
 846         wpa_s->known_wps_freq = 0;
 847         if (bssid) {
 848                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 849                 if (bss && bss->freq > 0) {
 850                         wpa_s->known_wps_freq = 1;
 851                         wpa_s->wps_freq = bss->freq;
 852                 }
 853         }
 854
 855         if (wpa_s->current_ssid)
 856                 wpa_supplicant_deauthenticate(
 857                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 858
 859         /* Mark all other networks disabled and trigger reassociation */
 860         ssid = wpa_s->conf->ssid;
 861         while (ssid) {
 862                 int was_disabled = ssid->disabled;
 863                 ssid->disabled_for_connect = 0;
 864                 /*
 865                  * In case the network object corresponds to a persistent group
 866                  * then do not send out network disabled signal. In addition,
 867                  * do not change disabled status of persistent network objects
 868                  * from 2 to 1 should we connect to another network.
 869                  */
 870                 if (was_disabled != 2) {
 871                         ssid->disabled = ssid != selected;
 872                         if (was_disabled != ssid->disabled) {
 873                                 if (ssid->disabled)
 874                                         ssid->disabled_for_connect = 1;
 875                                 wpas_notify_network_enabled_changed(wpa_s,
 876                                                                     ssid);
 877                         }
 878                 }
 879                 ssid = ssid->next;
 880         }
 881         wpa_s->disconnected = 0;
 882         wpa_s->reassociate = 1;
 883         wpa_s->scan_runs = 0;
 884         wpa_s->normal_scans = 0;
 885         wpa_s->wps_success = 0;
 886         wpa_s->blacklist_cleared = 0;
 887         wpa_supplicant_req_scan(wpa_s, 0, 0);
 888 }
 889
 890
 891 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 892                        int p2p_group)
 893 {
 894         struct wpa_ssid *ssid;
 895         wpas_clear_wps(wpa_s);
 896         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 897         if (ssid == NULL)
 898                 return -1;
 899         ssid->temporary = 1;
 900         ssid->p2p_group = p2p_group;
 901 #ifdef CONFIG_P2P
 902         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 903                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 904                 if (ssid->ssid) {
 905                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 906                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 907                                   ssid->ssid_len);
 908                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 909                                           "SSID", ssid->ssid, ssid->ssid_len);
 910                 }
 911         }
 912 #endif /* CONFIG_P2P */
 913         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 914         if (wpa_s->wps_fragment_size)
 915                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 916         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 917                                wpa_s, NULL);
 918         wpas_wps_reassoc(wpa_s, ssid, bssid);
 919         return 0;
 920 }
 921
 922
 923 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 924                        const char *pin, int p2p_group, u16 dev_pw_id)
 925 {
 926         struct wpa_ssid *ssid;
 927         char val[128];
 928         unsigned int rpin = 0;
 929
 930         wpas_clear_wps(wpa_s);
 931         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 932         if (ssid == NULL)
 933                 return -1;
 934         ssid->temporary = 1;
 935         ssid->p2p_group = p2p_group;
 936 #ifdef CONFIG_P2P
 937         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 938                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 939                 if (ssid->ssid) {
 940                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 941                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 942                                   ssid->ssid_len);
 943                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 944                                           "SSID", ssid->ssid, ssid->ssid_len);
 945                 }
 946         }
 947 #endif /* CONFIG_P2P */
 948         if (pin)
 949                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 950                             pin, dev_pw_id);
 951         else {
 952                 rpin = wps_generate_pin();
 953                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 954                             rpin, dev_pw_id);
 955         }
 956         wpa_config_set(ssid, "phase1", val, 0);
 957         if (wpa_s->wps_fragment_size)
 958                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 959         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 960                                wpa_s, NULL);
 961         wpa_s->wps_ap_iter = 1;
 962         wpas_wps_reassoc(wpa_s, ssid, bssid);
 963         return rpin;
 964 }
 965
 966
 967 /* Cancel the wps pbc/pin requests */
 968 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 969 {
 970 #ifdef CONFIG_AP
 971         if (wpa_s->ap_iface) {
 972                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 973                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 974         }
 975 #endif /* CONFIG_AP */
 976
 977         if (wpa_s->wpa_state == WPA_SCANNING ||
 978             wpa_s->wpa_state == WPA_DISCONNECTED) {
 979                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 980                 wpa_supplicant_cancel_scan(wpa_s);
 981                 wpas_clear_wps(wpa_s);
 982         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 983                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 984                            "deauthenticate");
 985                 wpa_supplicant_deauthenticate(wpa_s,
 986                                               WLAN_REASON_DEAUTH_LEAVING);
 987                 wpas_clear_wps(wpa_s);
 988         } else {
 989                 wpas_wps_reenable_networks(wpa_s);
 990                 wpas_wps_clear_ap_info(wpa_s);
 991         }
 992
 993         return 0;
 994 }
 995
 996
 997 #ifdef CONFIG_WPS_OOB
 998 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 999                        char *path, char *method, char *name)
1000 {
1001         struct wps_context *wps = wpa_s->wps;
1002         struct oob_device_data *oob_dev;
1003
1004         oob_dev = wps_get_oob_device(device_type);
1005         if (oob_dev == NULL)
1006                 return -1;
1007         oob_dev->device_path = path;
1008         oob_dev->device_name = name;
1009         wps->oob_conf.oob_method = wps_get_oob_method(method);
1010
1011         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
1012                 /*
1013                  * Use pre-configured DH keys in order to be able to write the
1014                  * key hash into the OOB file.
1015                  */
1016                 wpabuf_free(wps->dh_pubkey);
1017                 wpabuf_free(wps->dh_privkey);
1018                 wps->dh_privkey = NULL;
1019                 wps->dh_pubkey = NULL;
1020                 dh5_free(wps->dh_ctx);
1021                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
1022                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1023                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
1024                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1025                                    "Diffie-Hellman handshake");
1026                         return -1;
1027                 }
1028         }
1029
1030         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
1031                 wpas_clear_wps(wpa_s);
1032
1033         if (wps_process_oob(wps, oob_dev, 0) < 0)
1034                 return -1;
1035
1036         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1037              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1038             wpas_wps_start_pin(wpa_s, NULL,
1039                                wpabuf_head(wps->oob_conf.dev_password), 0,
1040                                DEV_PW_DEFAULT) < 0)
1041                         return -1;
1042
1043         return 0;
1044 }
1045 #endif /* CONFIG_WPS_OOB */
1046
1047
1048 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1049                        const char *pin, struct wps_new_ap_settings *settings)
1050 {
1051         struct wpa_ssid *ssid;
1052         char val[200];
1053         char *pos, *end;
1054         int res;
1055
1056         if (!pin)
1057                 return -1;
1058         wpas_clear_wps(wpa_s);
1059         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1060         if (ssid == NULL)
1061                 return -1;
1062         ssid->temporary = 1;
1063         pos = val;
1064         end = pos + sizeof(val);
1065         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1066         if (res < 0 || res >= end - pos)
1067                 return -1;
1068         pos += res;
1069         if (settings) {
1070                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1071                                   "new_encr=%s new_key=%s",
1072                                   settings->ssid_hex, settings->auth,
1073                                   settings->encr, settings->key_hex);
1074                 if (res < 0 || res >= end - pos)
1075                         return -1;
1076                 pos += res;
1077         }
1078         res = os_snprintf(pos, end - pos, "\"");
1079         if (res < 0 || res >= end - pos)
1080                 return -1;
1081         wpa_config_set(ssid, "phase1", val, 0);
1082         if (wpa_s->wps_fragment_size)
1083                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1084         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1085                                wpa_s, NULL);
1086         wpas_wps_reassoc(wpa_s, ssid, bssid);
1087         return 0;
1088 }
1089
1090
1091 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1092                                size_t psk_len)
1093 {
1094         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1095                    "STA " MACSTR, MAC2STR(mac_addr));
1096         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1097
1098         /* TODO */
1099
1100         return 0;
1101 }
1102
1103
1104 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1105                                    const struct wps_device_data *dev)
1106 {
1107         char uuid[40], txt[400];
1108         int len;
1109         char devtype[WPS_DEV_TYPE_BUFSIZE];
1110         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1111                 return;
1112         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1113         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1114                           " [%s|%s|%s|%s|%s|%s]",
1115                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1116                           dev->manufacturer, dev->model_name,
1117                           dev->model_number, dev->serial_number,
1118                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1119                                                sizeof(devtype)));
1120         if (len > 0 && len < (int) sizeof(txt))
1121                 wpa_printf(MSG_INFO, "%s", txt);
1122 }
1123
1124
1125 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1126                                     u16 sel_reg_config_methods)
1127 {
1128 #ifdef CONFIG_WPS_ER
1129         struct wpa_supplicant *wpa_s = ctx;
1130
1131         if (wpa_s->wps_er == NULL)
1132                 return;
1133         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1134                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1135                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1136         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1137                            sel_reg_config_methods);
1138 #endif /* CONFIG_WPS_ER */
1139 }
1140
1141
1142 static u16 wps_fix_config_methods(u16 config_methods)
1143 {
1144 #ifdef CONFIG_WPS2
1145         if ((config_methods &
1146              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1147               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1148                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1149                            "virtual_display for WPS 2.0 compliance");
1150                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1151         }
1152         if ((config_methods &
1153              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1154               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1155                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1156                            "virtual_push_button for WPS 2.0 compliance");
1157                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1158         }
1159 #endif /* CONFIG_WPS2 */
1160
1161         return config_methods;
1162 }
1163
1164
1165 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1166                               struct wps_context *wps)
1167 {
1168         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1169         if (is_nil_uuid(wpa_s->conf->uuid)) {
1170                 struct wpa_supplicant *first;
1171                 first = wpa_s->global->ifaces;
1172                 while (first && first->next)
1173                         first = first->next;
1174                 if (first && first != wpa_s) {
1175                         if (wps != wpa_s->global->ifaces->wps)
1176                                 os_memcpy(wps->uuid,
1177                                           wpa_s->global->ifaces->wps->uuid,
1178                                           WPS_UUID_LEN);
1179                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1180                                     "interface", wps->uuid, WPS_UUID_LEN);
1181                 } else {
1182                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1183                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1184                                     "address", wps->uuid, WPS_UUID_LEN);
1185                 }
1186         } else {
1187                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1188                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1189                             wps->uuid, WPS_UUID_LEN);
1190         }
1191 }
1192
1193
1194 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1195                                        struct wps_context *wps)
1196 {
1197         wpabuf_free(wps->dev.vendor_ext_m1);
1198         wps->dev.vendor_ext_m1 = NULL;
1199
1200         if (wpa_s->conf->wps_vendor_ext_m1) {
1201                 wps->dev.vendor_ext_m1 =
1202                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1203                 if (!wps->dev.vendor_ext_m1) {
1204                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1205                                    "allocate memory for vendor_ext_m1");
1206                 }
1207         }
1208 }
1209
1210
1211 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1212 {
1213         struct wps_context *wps;
1214         struct wps_registrar_config rcfg;
1215         struct hostapd_hw_modes *modes;
1216         u16 m;
1217
1218         wps = os_zalloc(sizeof(*wps));
1219         if (wps == NULL)
1220                 return -1;
1221
1222         wps->cred_cb = wpa_supplicant_wps_cred;
1223         wps->event_cb = wpa_supplicant_wps_event;
1224         wps->cb_ctx = wpa_s;
1225
1226         wps->dev.device_name = wpa_s->conf->device_name;
1227         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1228         wps->dev.model_name = wpa_s->conf->model_name;
1229         wps->dev.model_number = wpa_s->conf->model_number;
1230         wps->dev.serial_number = wpa_s->conf->serial_number;
1231         wps->config_methods =
1232                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1233         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1234             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1235                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1236                            "methods are not allowed at the same time");
1237                 os_free(wps);
1238                 return -1;
1239         }
1240         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1241         wps->dev.config_methods = wps->config_methods;
1242         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1243                   WPS_DEV_TYPE_LEN);
1244
1245         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1246         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1247                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1248
1249         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1250
1251         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1252         modes = wpa_s->hw.modes;
1253         if (modes) {
1254                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1255                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1256                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1257                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1258                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1259                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1260                 }
1261         }
1262         if (wps->dev.rf_bands == 0) {
1263                 /*
1264                  * Default to claiming support for both bands if the driver
1265                  * does not provide support for fetching supported bands.
1266                  */
1267                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1268         }
1269         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1270         wpas_wps_set_uuid(wpa_s, wps);
1271
1272         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1273         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1274
1275         os_memset(&rcfg, 0, sizeof(rcfg));
1276         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1277         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1278         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1279         rcfg.cb_ctx = wpa_s;
1280
1281         wps->registrar = wps_registrar_init(wps, &rcfg);
1282         if (wps->registrar == NULL) {
1283                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1284                 os_free(wps);
1285                 return -1;
1286         }
1287
1288         wpa_s->wps = wps;
1289
1290         return 0;
1291 }
1292
1293
1294 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1295 {
1296         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1297         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1298         wpas_wps_clear_ap_info(wpa_s);
1299
1300         if (wpa_s->wps == NULL)
1301                 return;
1302
1303 #ifdef CONFIG_WPS_ER
1304         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1305         wpa_s->wps_er = NULL;
1306 #endif /* CONFIG_WPS_ER */
1307
1308         wps_registrar_deinit(wpa_s->wps->registrar);
1309         wpabuf_free(wpa_s->wps->dh_pubkey);
1310         wpabuf_free(wpa_s->wps->dh_privkey);
1311         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1312         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1313         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1314         os_free(wpa_s->wps->network_key);
1315         os_free(wpa_s->wps);
1316         wpa_s->wps = NULL;
1317 }
1318
1319
1320 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1321                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1322 {
1323         struct wpabuf *wps_ie;
1324
1325         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1326                 return -1;
1327
1328         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1329         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1330                 if (!wps_ie) {
1331                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1332                         return 0;
1333                 }
1334
1335                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1336                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1337                                    "without active PBC Registrar");
1338                         wpabuf_free(wps_ie);
1339                         return 0;
1340                 }
1341
1342                 /* TODO: overlap detection */
1343                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1344                            "(Active PBC)");
1345                 wpabuf_free(wps_ie);
1346                 return 1;
1347         }
1348
1349         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1350                 if (!wps_ie) {
1351                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1352                         return 0;
1353                 }
1354
1355                 /*
1356                  * Start with WPS APs that advertise our address as an
1357                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1358                  * allow any WPS AP after couple of scans since some APs do not
1359                  * set Selected Registrar attribute properly when using
1360                  * external Registrar.
1361                  */
1362                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1363                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1364                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1365                                            "without active PIN Registrar");
1366                                 wpabuf_free(wps_ie);
1367                                 return 0;
1368                         }
1369                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1370                 } else {
1371                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1372                                    "(Authorized MAC or Active PIN)");
1373                 }
1374                 wpabuf_free(wps_ie);
1375                 return 1;
1376         }
1377
1378         if (wps_ie) {
1379                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1380                 wpabuf_free(wps_ie);
1381                 return 1;
1382         }
1383
1384         return -1;
1385 }
1386
1387
1388 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1389                               struct wpa_ssid *ssid,
1390                               struct wpa_bss *bss)
1391 {
1392         struct wpabuf *wps_ie = NULL;
1393         int ret = 0;
1394
1395         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1396                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1397                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1398                         /* allow wildcard SSID for WPS PBC */
1399                         ret = 1;
1400                 }
1401         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1402                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1403                 if (wps_ie &&
1404                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1405                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1406                         /* allow wildcard SSID for WPS PIN */
1407                         ret = 1;
1408                 }
1409         }
1410
1411         if (!ret && ssid->bssid_set &&
1412             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1413                 /* allow wildcard SSID due to hardcoded BSSID match */
1414                 ret = 1;
1415         }
1416
1417 #ifdef CONFIG_WPS_STRICT
1418         if (wps_ie) {
1419                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1420                                                    0, bss->bssid) < 0)
1421                         ret = 0;
1422                 if (bss->beacon_ie_len) {
1423                         struct wpabuf *bcn_wps;
1424                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1425                                 bss, WPS_IE_VENDOR_TYPE);
1426                         if (bcn_wps == NULL) {
1427                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1428                                            "missing from AP Beacon");
1429                                 ret = 0;
1430                         } else {
1431                                 if (wps_validate_beacon(wps_ie) < 0)
1432                                         ret = 0;
1433                                 wpabuf_free(bcn_wps);
1434                         }
1435                 }
1436         }
1437 #endif /* CONFIG_WPS_STRICT */
1438
1439         wpabuf_free(wps_ie);
1440
1441         return ret;
1442 }
1443
1444
1445 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1446                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1447 {
1448         const u8 *sel_uuid, *uuid;
1449         struct wpabuf *wps_ie;
1450         int ret = 0;
1451         struct wpa_bss *bss;
1452
1453         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1454                 return 0;
1455
1456         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1457                    "present in scan results; selected BSSID " MACSTR,
1458                    MAC2STR(selected->bssid));
1459
1460         /* Make sure that only one AP is in active PBC mode */
1461         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1462         if (wps_ie) {
1463                 sel_uuid = wps_get_uuid_e(wps_ie);
1464                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1465                             sel_uuid, UUID_LEN);
1466         } else {
1467                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1468                            "WPS IE?!");
1469                 sel_uuid = NULL;
1470         }
1471
1472         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1473                 struct wpabuf *ie;
1474                 if (bss == selected)
1475                         continue;
1476                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1477                 if (!ie)
1478                         continue;
1479                 if (!wps_is_selected_pbc_registrar(ie)) {
1480                         wpabuf_free(ie);
1481                         continue;
1482                 }
1483                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1484                            MACSTR, MAC2STR(bss->bssid));
1485                 uuid = wps_get_uuid_e(ie);
1486                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1487                             uuid, UUID_LEN);
1488                 if (sel_uuid == NULL || uuid == NULL ||
1489                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1490                         ret = 1; /* PBC overlap */
1491                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1492                                 MACSTR " and " MACSTR,
1493                                 MAC2STR(selected->bssid),
1494                                 MAC2STR(bss->bssid));
1495                         wpabuf_free(ie);
1496                         break;
1497                 }
1498
1499                 /* TODO: verify that this is reasonable dual-band situation */
1500
1501                 wpabuf_free(ie);
1502         }
1503
1504         wpabuf_free(wps_ie);
1505
1506         return ret;
1507 }
1508
1509
1510 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1511 {
1512         struct wpa_bss *bss;
1513         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1514
1515         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1516                 return;
1517
1518         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1519                 struct wpabuf *ie;
1520                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1521                 if (!ie)
1522                         continue;
1523                 if (wps_is_selected_pbc_registrar(ie))
1524                         pbc++;
1525                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1526                         auth++;
1527                 else if (wps_is_selected_pin_registrar(ie))
1528                         pin++;
1529                 else
1530                         wps++;
1531                 wpabuf_free(ie);
1532         }
1533
1534         if (pbc)
1535                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1536         else if (auth)
1537                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1538         else if (pin)
1539                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1540         else if (wps)
1541                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1542 }
1543
1544
1545 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1546 {
1547         struct wpa_ssid *ssid;
1548
1549         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1550                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1551                         return 1;
1552         }
1553
1554         return 0;
1555 }
1556
1557
1558 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1559                               char *end)
1560 {
1561         struct wpabuf *wps_ie;
1562         int ret;
1563
1564         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1565         if (wps_ie == NULL)
1566                 return 0;
1567
1568         ret = wps_attr_text(wps_ie, buf, end);
1569         wpabuf_free(wps_ie);
1570         return ret;
1571 }
1572
1573
1574 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1575 {
1576 #ifdef CONFIG_WPS_ER
1577         if (wpa_s->wps_er) {
1578                 wps_er_refresh(wpa_s->wps_er);
1579                 return 0;
1580         }
1581         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1582         if (wpa_s->wps_er == NULL)
1583                 return -1;
1584         return 0;
1585 #else /* CONFIG_WPS_ER */
1586         return 0;
1587 #endif /* CONFIG_WPS_ER */
1588 }
1589
1590
1591 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1592 {
1593 #ifdef CONFIG_WPS_ER
1594         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1595         wpa_s->wps_er = NULL;
1596 #endif /* CONFIG_WPS_ER */
1597         return 0;
1598 }
1599
1600
1601 #ifdef CONFIG_WPS_ER
1602 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1603                         const char *uuid, const char *pin)
1604 {
1605         u8 u[UUID_LEN];
1606         int any = 0;
1607
1608         if (os_strcmp(uuid, "any") == 0)
1609                 any = 1;
1610         else if (uuid_str2bin(uuid, u))
1611                 return -1;
1612         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1613                                      any ? NULL : u,
1614                                      (const u8 *) pin, os_strlen(pin), 300);
1615 }
1616
1617
1618 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1619 {
1620         u8 u[UUID_LEN];
1621
1622         if (uuid_str2bin(uuid, u))
1623                 return -1;
1624         return wps_er_pbc(wpa_s->wps_er, u);
1625 }
1626
1627
1628 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1629                       const char *pin)
1630 {
1631         u8 u[UUID_LEN];
1632
1633         if (uuid_str2bin(uuid, u))
1634                 return -1;
1635         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1636                             os_strlen(pin));
1637 }
1638
1639
1640 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1641                            int id)
1642 {
1643         u8 u[UUID_LEN];
1644         struct wpa_ssid *ssid;
1645         struct wps_credential cred;
1646
1647         if (uuid_str2bin(uuid, u))
1648                 return -1;
1649         ssid = wpa_config_get_network(wpa_s->conf, id);
1650         if (ssid == NULL || ssid->ssid == NULL)
1651                 return -1;
1652
1653         os_memset(&cred, 0, sizeof(cred));
1654         if (ssid->ssid_len > 32)
1655                 return -1;
1656         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1657         cred.ssid_len = ssid->ssid_len;
1658         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1659                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1660                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1661                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1662                         cred.encr_type = WPS_ENCR_AES;
1663                 else
1664                         cred.encr_type = WPS_ENCR_TKIP;
1665                 if (ssid->passphrase) {
1666                         cred.key_len = os_strlen(ssid->passphrase);
1667                         if (cred.key_len >= 64)
1668                                 return -1;
1669                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1670                 } else if (ssid->psk_set) {
1671                         cred.key_len = 32;
1672                         os_memcpy(cred.key, ssid->psk, 32);
1673                 } else
1674                         return -1;
1675         } else {
1676                 cred.auth_type = WPS_AUTH_OPEN;
1677                 cred.encr_type = WPS_ENCR_NONE;
1678         }
1679         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1680 }
1681
1682
1683 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1684                        const char *pin, struct wps_new_ap_settings *settings)
1685 {
1686         u8 u[UUID_LEN];
1687         struct wps_credential cred;
1688         size_t len;
1689
1690         if (uuid_str2bin(uuid, u))
1691                 return -1;
1692         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1693             settings->encr == NULL || settings->key_hex == NULL)
1694                 return -1;
1695
1696         os_memset(&cred, 0, sizeof(cred));
1697         len = os_strlen(settings->ssid_hex);
1698         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1699             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1700                 return -1;
1701         cred.ssid_len = len / 2;
1702
1703         len = os_strlen(settings->key_hex);
1704         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1705             hexstr2bin(settings->key_hex, cred.key, len / 2))
1706                 return -1;
1707         cred.key_len = len / 2;
1708
1709         if (os_strcmp(settings->auth, "OPEN") == 0)
1710                 cred.auth_type = WPS_AUTH_OPEN;
1711         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1712                 cred.auth_type = WPS_AUTH_WPAPSK;
1713         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1714                 cred.auth_type = WPS_AUTH_WPA2PSK;
1715         else
1716                 return -1;
1717
1718         if (os_strcmp(settings->encr, "NONE") == 0)
1719                 cred.encr_type = WPS_ENCR_NONE;
1720         else if (os_strcmp(settings->encr, "WEP") == 0)
1721                 cred.encr_type = WPS_ENCR_WEP;
1722         else if (os_strcmp(settings->encr, "TKIP") == 0)
1723                 cred.encr_type = WPS_ENCR_TKIP;
1724         else if (os_strcmp(settings->encr, "CCMP") == 0)
1725                 cred.encr_type = WPS_ENCR_AES;
1726         else
1727                 return -1;
1728
1729         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1730                              os_strlen(pin), &cred);
1731 }
1732
1733
1734 #ifdef CONFIG_WPS_NFC
1735 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1736                                              int ndef, const char *uuid)
1737 {
1738         struct wpabuf *ret;
1739         u8 u[UUID_LEN];
1740
1741         if (!wpa_s->wps_er)
1742                 return NULL;
1743
1744         if (uuid_str2bin(uuid, u))
1745                 return NULL;
1746
1747         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1748         if (ndef && ret) {
1749                 struct wpabuf *tmp;
1750                 tmp = ndef_build_wifi(ret);
1751                 wpabuf_free(ret);
1752                 if (tmp == NULL)
1753                         return NULL;
1754                 ret = tmp;
1755         }
1756
1757         return ret;
1758 }
1759 #endif /* CONFIG_WPS_NFC */
1760
1761
1762 static int callbacks_pending = 0;
1763
1764 static void wpas_wps_terminate_cb(void *ctx)
1765 {
1766         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1767         if (--callbacks_pending <= 0)
1768                 eloop_terminate();
1769 }
1770 #endif /* CONFIG_WPS_ER */
1771
1772
1773 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1774 {
1775 #ifdef CONFIG_WPS_ER
1776         if (wpa_s->wps_er) {
1777                 callbacks_pending++;
1778                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1779                 wpa_s->wps_er = NULL;
1780                 return 1;
1781         }
1782 #endif /* CONFIG_WPS_ER */
1783         return 0;
1784 }
1785
1786
1787 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1788 {
1789         struct wpa_ssid *ssid;
1790
1791         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1792                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1793                         return 1;
1794         }
1795
1796         return 0;
1797 }
1798
1799
1800 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1801 {
1802         struct wps_context *wps = wpa_s->wps;
1803
1804         if (wps == NULL)
1805                 return;
1806
1807         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1808                 wps->config_methods = wps_config_methods_str2bin(
1809                         wpa_s->conf->config_methods);
1810                 if ((wps->config_methods &
1811                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1812                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1813                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1814                                    "config methods are not allowed at the "
1815                                    "same time");
1816                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1817                 }
1818         }
1819         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1820         wps->dev.config_methods = wps->config_methods;
1821
1822         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1823                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1824                           WPS_DEV_TYPE_LEN);
1825
1826         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1827                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1828                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1829                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1830         }
1831
1832         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1833                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1834
1835         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1836                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1837
1838         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1839                 wpas_wps_set_uuid(wpa_s, wps);
1840
1841         if (wpa_s->conf->changed_parameters &
1842             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1843                 /* Update pointers to make sure they refer current values */
1844                 wps->dev.device_name = wpa_s->conf->device_name;
1845                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1846                 wps->dev.model_name = wpa_s->conf->model_name;
1847                 wps->dev.model_number = wpa_s->conf->model_number;
1848                 wps->dev.serial_number = wpa_s->conf->serial_number;
1849         }
1850 }
1851
1852
1853 #ifdef CONFIG_WPS_NFC
1854
1855 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1856 {
1857         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1858                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1859                                  &wpa_s->conf->wps_nfc_dh_privkey,
1860                                  &wpa_s->conf->wps_nfc_dev_pw);
1861 }
1862
1863
1864 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1865 {
1866         struct wps_context *wps = wpa_s->wps;
1867         char pw[32 * 2 + 1];
1868
1869         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1870             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1871             wpa_s->conf->wps_nfc_dev_pw == NULL)
1872                 return -1;
1873
1874         dh5_free(wps->dh_ctx);
1875         wpabuf_free(wps->dh_pubkey);
1876         wpabuf_free(wps->dh_privkey);
1877         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1878         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1879         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1880                 wps->dh_ctx = NULL;
1881                 wpabuf_free(wps->dh_pubkey);
1882                 wps->dh_pubkey = NULL;
1883                 wpabuf_free(wps->dh_privkey);
1884                 wps->dh_privkey = NULL;
1885                 return -1;
1886         }
1887         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1888         if (wps->dh_ctx == NULL)
1889                 return -1;
1890
1891         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1892                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1893                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1894         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1895                                   wpa_s->conf->wps_nfc_dev_pw_id);
1896 }
1897
1898
1899 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1900                              struct wps_parse_attr *attr)
1901 {
1902         wpa_s->wps_ap_channel = 0;
1903
1904         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1905                 return -1;
1906
1907         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1908                 return 0;
1909
1910         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1911                    "based on the received credential added");
1912         wpa_s->normal_scans = 0;
1913         wpa_supplicant_reinit_autoscan(wpa_s);
1914         if (wpa_s->wps_ap_channel) {
1915                 u16 chan = wpa_s->wps_ap_channel;
1916                 int freq = 0;
1917
1918                 if (chan >= 1 && chan <= 13)
1919                         freq = 2407 + 5 * chan;
1920                 else if (chan == 14)
1921                         freq = 2484;
1922                 else if (chan >= 30)
1923                         freq = 5000 + 5 * chan;
1924
1925                 if (freq) {
1926                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1927                                    "AP channel %u -> %u MHz", chan, freq);
1928                         wpa_s->after_wps = 5;
1929                         wpa_s->wps_freq = freq;
1930                 }
1931         }
1932         wpa_s->disconnected = 0;
1933         wpa_s->reassociate = 1;
1934         wpa_supplicant_req_scan(wpa_s, 0, 0);
1935
1936         return 0;
1937 }
1938
1939
1940 #ifdef CONFIG_WPS_ER
1941 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1942                                            struct wps_parse_attr *attr)
1943 {
1944         return wps_registrar_add_nfc_password_token(
1945                 wpa_s->wps->registrar, attr->oob_dev_password,
1946                 attr->oob_dev_password_len);
1947 }
1948 #endif /* CONFIG_WPS_ER */
1949
1950
1951 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1952                                     const struct wpabuf *wps)
1953 {
1954         struct wps_parse_attr attr;
1955
1956         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1957
1958         if (wps_parse_msg(wps, &attr)) {
1959                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1960                 return -1;
1961         }
1962
1963         if (attr.num_cred)
1964                 return wpas_wps_use_cred(wpa_s, &attr);
1965
1966 #ifdef CONFIG_WPS_ER
1967         if (attr.oob_dev_password)
1968                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1969 #endif /* CONFIG_WPS_ER */
1970
1971         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1972         return -1;
1973 }
1974
1975
1976 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1977                           const struct wpabuf *data)
1978 {
1979         const struct wpabuf *wps = data;
1980         struct wpabuf *tmp = NULL;
1981         int ret;
1982
1983         if (wpabuf_len(data) < 4)
1984                 return -1;
1985
1986         if (*wpabuf_head_u8(data) != 0x10) {
1987                 /* Assume this contains full NDEF record */
1988                 tmp = ndef_parse_wifi(data);
1989                 if (tmp == NULL) {
1990                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1991                         return -1;
1992                 }
1993                 wps = tmp;
1994         }
1995
1996         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1997         wpabuf_free(tmp);
1998         return ret;
1999 }
2000
2001
2002 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s)
2003 {
2004         return ndef_build_wifi_hr();
2005 }
2006
2007
2008 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
2009 {
2010         return NULL;
2011 }
2012
2013
2014 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2015                                  const struct wpabuf *data)
2016 {
2017         /* TODO */
2018         return -1;
2019 }
2020
2021
2022 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2023                                  const struct wpabuf *data)
2024 {
2025         struct wpabuf *wps;
2026         int ret;
2027
2028         wps = ndef_parse_wifi(data);
2029         if (wps == NULL)
2030                 return -1;
2031         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2032                    "payload from NFC connection handover");
2033         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2034         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2035         wpabuf_free(wps);
2036
2037         return ret;
2038 }
2039
2040 #endif /* CONFIG_WPS_NFC */
2041
2042
2043 extern int wpa_debug_level;
2044
2045 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2046 {
2047         size_t i;
2048         struct os_time now;
2049
2050         if (wpa_debug_level > MSG_DEBUG)
2051                 return;
2052
2053         if (wpa_s->wps_ap == NULL)
2054                 return;
2055
2056         os_get_time(&now);
2057
2058         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2059                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2060                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2061
2062                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2063                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2064                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2065                            ap->last_attempt.sec > 0 ?
2066                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2067                            e ? e->count : 0);
2068         }
2069 }
2070
2071
2072 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2073                                                  const u8 *bssid)
2074 {
2075         size_t i;
2076
2077         if (wpa_s->wps_ap == NULL)
2078                 return NULL;
2079
2080         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2081                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2082                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2083                         return ap;
2084         }
2085
2086         return NULL;
2087 }
2088
2089
2090 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2091                                         struct wpa_scan_res *res)
2092 {
2093         struct wpabuf *wps;
2094         enum wps_ap_info_type type;
2095         struct wps_ap_info *ap;
2096         int r;
2097
2098         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2099                 return;
2100
2101         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2102         if (wps == NULL)
2103                 return;
2104
2105         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2106         if (r == 2)
2107                 type = WPS_AP_SEL_REG_OUR;
2108         else if (r == 1)
2109                 type = WPS_AP_SEL_REG;
2110         else
2111                 type = WPS_AP_NOT_SEL_REG;
2112
2113         wpabuf_free(wps);
2114
2115         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2116         if (ap) {
2117                 if (ap->type != type) {
2118                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2119                                    " changed type %d -> %d",
2120                                    MAC2STR(res->bssid), ap->type, type);
2121                         ap->type = type;
2122                         if (type != WPS_AP_NOT_SEL_REG)
2123                                 wpa_blacklist_del(wpa_s, ap->bssid);
2124                 }
2125                 return;
2126         }
2127
2128         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2129                               sizeof(struct wps_ap_info));
2130         if (ap == NULL)
2131                 return;
2132
2133         wpa_s->wps_ap = ap;
2134         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2135         wpa_s->num_wps_ap++;
2136
2137         os_memset(ap, 0, sizeof(*ap));
2138         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2139         ap->type = type;
2140         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2141                    MAC2STR(ap->bssid), ap->type);
2142 }
2143
2144
2145 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2146                              struct wpa_scan_results *scan_res)
2147 {
2148         size_t i;
2149
2150         for (i = 0; i < scan_res->num; i++)
2151                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2152
2153         wpas_wps_dump_ap_info(wpa_s);
2154 }
2155
2156
2157 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2158 {
2159         struct wps_ap_info *ap;
2160         if (!wpa_s->wps_ap_iter)
2161                 return;
2162         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2163         if (ap == NULL)
2164                 return;
2165         ap->tries++;
2166         os_get_time(&ap->last_attempt);
2167 }