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 (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 260                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 261                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 262                                    "invalid Network Key length %lu",
 263                                    (unsigned long) cred->key_len);
 264                         return -1;
 265                 }
 266         }
 267
 268         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 269                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 270                            "on the received credential");
 271 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 272                 if (ssid->eap.identity &&
 273                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 274                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 275                               WSC_ID_REGISTRAR_LEN) == 0)
 276                         registrar = 1;
 277 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 278                 os_free(ssid->eap.identity);
 279                 ssid->eap.identity = NULL;
 280                 ssid->eap.identity_len = 0;
 281                 os_free(ssid->eap.phase1);
 282                 ssid->eap.phase1 = NULL;
 283                 os_free(ssid->eap.eap_methods);
 284                 ssid->eap.eap_methods = NULL;
 285                 if (!ssid->p2p_group) {
 286                         ssid->temporary = 0;
 287                         ssid->bssid_set = 0;
 288                 }
 289                 ssid->disabled_until.sec = 0;
 290                 ssid->disabled_until.usec = 0;
 291                 ssid->auth_failures = 0;
 292         } else {
 293                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 294                            "received credential");
 295                 ssid = wpa_config_add_network(wpa_s->conf);
 296                 if (ssid == NULL)
 297                         return -1;
 298                 wpas_notify_network_added(wpa_s, ssid);
 299         }
 300
 301         wpa_config_set_network_defaults(ssid);
 302
 303         os_free(ssid->ssid);
 304         ssid->ssid = os_malloc(cred->ssid_len);
 305         if (ssid->ssid) {
 306                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 307                 ssid->ssid_len = cred->ssid_len;
 308         }
 309
 310         switch (cred->encr_type) {
 311         case WPS_ENCR_NONE:
 312                 break;
 313         case WPS_ENCR_WEP:
 314                 if (cred->key_len <= 0)
 315                         break;
 316                 if (cred->key_len != 5 && cred->key_len != 13 &&
 317                     cred->key_len != 10 && cred->key_len != 26) {
 318                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 319                                    "%lu", (unsigned long) cred->key_len);
 320                         return -1;
 321                 }
 322                 if (cred->key_idx > NUM_WEP_KEYS) {
 323                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 324                                    cred->key_idx);
 325                         return -1;
 326                 }
 327                 if (cred->key_idx)
 328                         key_idx = cred->key_idx - 1;
 329                 if (cred->key_len == 10 || cred->key_len == 26) {
 330                         if (hexstr2bin((char *) cred->key,
 331                                        ssid->wep_key[key_idx],
 332                                        cred->key_len / 2) < 0) {
 333                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 334                                            "%d", key_idx);
 335                                 return -1;
 336                         }
 337                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 338                 } else {
 339                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 340                                   cred->key_len);
 341                         ssid->wep_key_len[key_idx] = cred->key_len;
 342                 }
 343                 ssid->wep_tx_keyidx = key_idx;
 344                 break;
 345         case WPS_ENCR_TKIP:
 346                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 347                 break;
 348         case WPS_ENCR_AES:
 349                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 350                 break;
 351         }
 352
 353         switch (auth_type) {
 354         case WPS_AUTH_OPEN:
 355                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 356                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 357                 ssid->proto = 0;
 358 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 359                 if (registrar) {
 360                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 361                                 "id=%d - Credentials for an open "
 362                                 "network disabled by default - use "
 363                                 "'select_network %d' to enable",
 364                                 ssid->id, ssid->id);
 365                         ssid->disabled = 1;
 366                 }
 367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 368                 break;
 369         case WPS_AUTH_SHARED:
 370                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 371                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 372                 ssid->proto = 0;
 373                 break;
 374         case WPS_AUTH_WPAPSK:
 375                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 376                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 377                 ssid->proto = WPA_PROTO_WPA;
 378                 break;
 379         case WPS_AUTH_WPA2PSK:
 380                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 381                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 382                 ssid->proto = WPA_PROTO_RSN;
 383                 break;
 384         }
 385
 386         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 387                 if (cred->key_len == 2 * PMK_LEN) {
 388                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 389                                        PMK_LEN)) {
 390                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 391                                            "Key");
 392                                 return -1;
 393                         }
 394                         ssid->psk_set = 1;
 395                         ssid->export_keys = 1;
 396                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 397                         os_free(ssid->passphrase);
 398                         ssid->passphrase = os_malloc(cred->key_len + 1);
 399                         if (ssid->passphrase == NULL)
 400                                 return -1;
 401                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 402                         ssid->passphrase[cred->key_len] = '\0';
 403                         wpa_config_update_psk(ssid);
 404                         ssid->export_keys = 1;
 405                 } else {
 406                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 407                                    "length %lu",
 408                                    (unsigned long) cred->key_len);
 409                         return -1;
 410                 }
 411         }
 412
 413         wpas_wps_security_workaround(wpa_s, ssid, cred);
 414
 415         if (cred->ap_channel)
 416                 wpa_s->wps_ap_channel = cred->ap_channel;
 417
 418 #ifndef CONFIG_NO_CONFIG_WRITE
 419         if (wpa_s->conf->update_config &&
 420             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 421                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 422                 return -1;
 423         }
 424 #endif /* CONFIG_NO_CONFIG_WRITE */
 425
 426         return 0;
 427 }
 428
 429
 430 #ifdef CONFIG_P2P
 431 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 432 {
 433         struct wpa_supplicant *wpa_s = eloop_ctx;
 434         wpas_p2p_notif_pbc_overlap(wpa_s);
 435 }
 436 #endif /* CONFIG_P2P */
 437
 438
 439 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 440                                          struct wps_event_m2d *m2d)
 441 {
 442         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 443                 "dev_password_id=%d config_error=%d",
 444                 m2d->dev_password_id, m2d->config_error);
 445         wpas_notify_wps_event_m2d(wpa_s, m2d);
 446 #ifdef CONFIG_P2P
 447         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 448                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 449                         "dev_password_id=%d config_error=%d",
 450                         m2d->dev_password_id, m2d->config_error);
 451         }
 452         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 453                 /*
 454                  * Notify P2P from eloop timeout to avoid issues with the
 455                  * interface getting removed while processing a message.
 456                  */
 457                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 458                                        NULL);
 459         }
 460 #endif /* CONFIG_P2P */
 461 }
 462
 463
 464 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 465         "No Error", /* WPS_EI_NO_ERROR */
 466         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 467         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 468 };
 469
 470 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 471                                           struct wps_event_fail *fail)
 472 {
 473         if (fail->error_indication > 0 &&
 474             fail->error_indication < NUM_WPS_EI_VALUES) {
 475                 wpa_msg(wpa_s, MSG_INFO,
 476                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 477                         fail->msg, fail->config_error, fail->error_indication,
 478                         wps_event_fail_reason[fail->error_indication]);
 479                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 480                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 481                                 "msg=%d config_error=%d reason=%d (%s)",
 482                                 fail->msg, fail->config_error,
 483                                 fail->error_indication,
 484                                 wps_event_fail_reason[fail->error_indication]);
 485         } else {
 486                 wpa_msg(wpa_s, MSG_INFO,
 487                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 488                         fail->msg, fail->config_error);
 489                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 490                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 491                                 "msg=%d config_error=%d",
 492                                 fail->msg, fail->config_error);
 493         }
 494         wpas_clear_wps(wpa_s);
 495         wpas_notify_wps_event_fail(wpa_s, fail);
 496 #ifdef CONFIG_P2P
 497         wpas_p2p_wps_failed(wpa_s, fail);
 498 #endif /* CONFIG_P2P */
 499 }
 500
 501
 502 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 503
 504 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 505 {
 506         struct wpa_ssid *ssid;
 507
 508         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 509
 510         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 511                 if (ssid->disabled_for_connect && ssid->disabled) {
 512                         ssid->disabled_for_connect = 0;
 513                         ssid->disabled = 0;
 514                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 515                 }
 516         }
 517 }
 518
 519
 520 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 521 {
 522         struct wpa_supplicant *wpa_s = eloop_ctx;
 523         /* Enable the networks disabled during wpas_wps_reassoc */
 524         wpas_wps_reenable_networks(wpa_s);
 525 }
 526
 527
 528 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 529 {
 530         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 531         wpa_s->wps_success = 1;
 532         wpas_notify_wps_event_success(wpa_s);
 533
 534         /*
 535          * Enable the networks disabled during wpas_wps_reassoc after 10
 536          * seconds. The 10 seconds timer is to allow the data connection to be
 537          * formed before allowing other networks to be selected.
 538          */
 539         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 540                                NULL);
 541
 542 #ifdef CONFIG_P2P
 543         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 544 #endif /* CONFIG_P2P */
 545 }
 546
 547
 548 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 549                                                struct wps_event_er_ap *ap)
 550 {
 551         char uuid_str[100];
 552         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 553
 554         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 555         if (ap->pri_dev_type)
 556                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 557                                      sizeof(dev_type));
 558         else
 559                 dev_type[0] = '\0';
 560
 561         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 562                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 563                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 564                 ap->friendly_name ? ap->friendly_name : "",
 565                 ap->manufacturer ? ap->manufacturer : "",
 566                 ap->model_description ? ap->model_description : "",
 567                 ap->model_name ? ap->model_name : "",
 568                 ap->manufacturer_url ? ap->manufacturer_url : "",
 569                 ap->model_url ? ap->model_url : "");
 570 }
 571
 572
 573 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 574                                                   struct wps_event_er_ap *ap)
 575 {
 576         char uuid_str[100];
 577         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 578         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 579 }
 580
 581
 582 static void wpa_supplicant_wps_event_er_enrollee_add(
 583         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 584 {
 585         char uuid_str[100];
 586         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 587
 588         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 589         if (enrollee->pri_dev_type)
 590                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 591                                      sizeof(dev_type));
 592         else
 593                 dev_type[0] = '\0';
 594
 595         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 596                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 597                 "|%s|%s|%s|%s|%s|",
 598                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 599                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 600                 enrollee->dev_name ? enrollee->dev_name : "",
 601                 enrollee->manufacturer ? enrollee->manufacturer : "",
 602                 enrollee->model_name ? enrollee->model_name : "",
 603                 enrollee->model_number ? enrollee->model_number : "",
 604                 enrollee->serial_number ? enrollee->serial_number : "");
 605 }
 606
 607
 608 static void wpa_supplicant_wps_event_er_enrollee_remove(
 609         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 610 {
 611         char uuid_str[100];
 612         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 613         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 614                 uuid_str, MAC2STR(enrollee->mac_addr));
 615 }
 616
 617
 618 static void wpa_supplicant_wps_event_er_ap_settings(
 619         struct wpa_supplicant *wpa_s,
 620         struct wps_event_er_ap_settings *ap_settings)
 621 {
 622         char uuid_str[100];
 623         char key_str[65];
 624         const struct wps_credential *cred = ap_settings->cred;
 625
 626         key_str[0] = '\0';
 627         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 628                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 629                         os_memcpy(key_str, cred->key, cred->key_len);
 630                         key_str[cred->key_len] = '\0';
 631                 }
 632         }
 633
 634         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 635         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 636         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 637                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 638                      "key=%s",
 639                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 640                      cred->auth_type, cred->encr_type, key_str);
 641 }
 642
 643
 644 static void wpa_supplicant_wps_event_er_set_sel_reg(
 645         struct wpa_supplicant *wpa_s,
 646         struct wps_event_er_set_selected_registrar *ev)
 647 {
 648         char uuid_str[100];
 649
 650         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 651         switch (ev->state) {
 652         case WPS_ER_SET_SEL_REG_START:
 653                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 654                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 655                         "sel_reg_config_methods=0x%x",
 656                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 657                         ev->sel_reg_config_methods);
 658                 break;
 659         case WPS_ER_SET_SEL_REG_DONE:
 660                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 661                         "uuid=%s state=DONE", uuid_str);
 662                 break;
 663         case WPS_ER_SET_SEL_REG_FAILED:
 664                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 665                         "uuid=%s state=FAILED", uuid_str);
 666                 break;
 667         }
 668 }
 669
 670
 671 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 672                                      union wps_event_data *data)
 673 {
 674         struct wpa_supplicant *wpa_s = ctx;
 675         switch (event) {
 676         case WPS_EV_M2D:
 677                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 678                 break;
 679         case WPS_EV_FAIL:
 680                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 681                 break;
 682         case WPS_EV_SUCCESS:
 683                 wpa_supplicant_wps_event_success(wpa_s);
 684                 break;
 685         case WPS_EV_PWD_AUTH_FAIL:
 686 #ifdef CONFIG_AP
 687                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 688                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 689 #endif /* CONFIG_AP */
 690                 break;
 691         case WPS_EV_PBC_OVERLAP:
 692                 break;
 693         case WPS_EV_PBC_TIMEOUT:
 694                 break;
 695         case WPS_EV_ER_AP_ADD:
 696                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 697                 break;
 698         case WPS_EV_ER_AP_REMOVE:
 699                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 700                 break;
 701         case WPS_EV_ER_ENROLLEE_ADD:
 702                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 703                                                          &data->enrollee);
 704                 break;
 705         case WPS_EV_ER_ENROLLEE_REMOVE:
 706                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 707                                                             &data->enrollee);
 708                 break;
 709         case WPS_EV_ER_AP_SETTINGS:
 710                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 711                                                         &data->ap_settings);
 712                 break;
 713         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 714                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 715                                                         &data->set_sel_reg);
 716                 break;
 717         case WPS_EV_AP_PIN_SUCCESS:
 718                 break;
 719         }
 720 }
 721
 722
 723 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 724 {
 725         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 726             eap_is_wps_pin_enrollee(&ssid->eap))
 727                 return WPS_REQ_ENROLLEE;
 728         else
 729                 return WPS_REQ_REGISTRAR;
 730 }
 731
 732
 733 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 734 {
 735         int id;
 736         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 737
 738         prev_current = wpa_s->current_ssid;
 739
 740         /* Enable the networks disabled during wpas_wps_reassoc */
 741         wpas_wps_reenable_networks(wpa_s);
 742
 743         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 744
 745         /* Remove any existing WPS network from configuration */
 746         ssid = wpa_s->conf->ssid;
 747         while (ssid) {
 748                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 749                         if (ssid == wpa_s->current_ssid) {
 750                                 wpa_s->current_ssid = NULL;
 751                                 if (ssid != NULL)
 752                                         wpas_notify_network_changed(wpa_s);
 753                         }
 754                         id = ssid->id;
 755                         remove_ssid = ssid;
 756                 } else
 757                         id = -1;
 758                 ssid = ssid->next;
 759                 if (id >= 0) {
 760                         if (prev_current == remove_ssid) {
 761                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 762                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 763                                                        NULL);
 764                         }
 765                         wpas_notify_network_removed(wpa_s, remove_ssid);
 766                         wpa_config_remove_network(wpa_s->conf, id);
 767                 }
 768         }
 769
 770         wpas_wps_clear_ap_info(wpa_s);
 771 }
 772
 773
 774 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 775 {
 776         struct wpa_supplicant *wpa_s = eloop_ctx;
 777         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 778                 "out");
 779         wpas_clear_wps(wpa_s);
 780 }
 781
 782
 783 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 784                                               int registrar, const u8 *bssid)
 785 {
 786         struct wpa_ssid *ssid;
 787
 788         ssid = wpa_config_add_network(wpa_s->conf);
 789         if (ssid == NULL)
 790                 return NULL;
 791         wpas_notify_network_added(wpa_s, ssid);
 792         wpa_config_set_network_defaults(ssid);
 793         ssid->temporary = 1;
 794         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 795             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 796             wpa_config_set(ssid, "identity", registrar ?
 797                            "\"" WSC_ID_REGISTRAR "\"" :
 798                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 799                 wpas_notify_network_removed(wpa_s, ssid);
 800                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 801                 return NULL;
 802         }
 803
 804         if (bssid) {
 805 #ifndef CONFIG_P2P
 806                 struct wpa_bss *bss;
 807                 int count = 0;
 808 #endif /* CONFIG_P2P */
 809
 810                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 811                 ssid->bssid_set = 1;
 812
 813                 /*
 814                  * Note: With P2P, the SSID may change at the time the WPS
 815                  * provisioning is started, so better not filter the AP based
 816                  * on the current SSID in the scan results.
 817                  */
 818 #ifndef CONFIG_P2P
 819                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 820                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 821                                 continue;
 822
 823                         os_free(ssid->ssid);
 824                         ssid->ssid = os_malloc(bss->ssid_len);
 825                         if (ssid->ssid == NULL)
 826                                 break;
 827                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 828                         ssid->ssid_len = bss->ssid_len;
 829                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 830                                           "scan results",
 831                                           ssid->ssid, ssid->ssid_len);
 832                         count++;
 833                 }
 834
 835                 if (count > 1) {
 836                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 837                                    "for the AP; use wildcard");
 838                         os_free(ssid->ssid);
 839                         ssid->ssid = NULL;
 840                         ssid->ssid_len = 0;
 841                 }
 842 #endif /* CONFIG_P2P */
 843         }
 844
 845         return ssid;
 846 }
 847
 848
 849 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 850                              struct wpa_ssid *selected, const u8 *bssid)
 851 {
 852         struct wpa_ssid *ssid;
 853         struct wpa_bss *bss;
 854
 855         wpa_s->known_wps_freq = 0;
 856         if (bssid) {
 857                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 858                 if (bss && bss->freq > 0) {
 859                         wpa_s->known_wps_freq = 1;
 860                         wpa_s->wps_freq = bss->freq;
 861                 }
 862         }
 863
 864         if (wpa_s->current_ssid)
 865                 wpa_supplicant_deauthenticate(
 866                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 867
 868         /* Mark all other networks disabled and trigger reassociation */
 869         ssid = wpa_s->conf->ssid;
 870         while (ssid) {
 871                 int was_disabled = ssid->disabled;
 872                 ssid->disabled_for_connect = 0;
 873                 /*
 874                  * In case the network object corresponds to a persistent group
 875                  * then do not send out network disabled signal. In addition,
 876                  * do not change disabled status of persistent network objects
 877                  * from 2 to 1 should we connect to another network.
 878                  */
 879                 if (was_disabled != 2) {
 880                         ssid->disabled = ssid != selected;
 881                         if (was_disabled != ssid->disabled) {
 882                                 if (ssid->disabled)
 883                                         ssid->disabled_for_connect = 1;
 884                                 wpas_notify_network_enabled_changed(wpa_s,
 885                                                                     ssid);
 886                         }
 887                 }
 888                 ssid = ssid->next;
 889         }
 890         wpa_s->disconnected = 0;
 891         wpa_s->reassociate = 1;
 892         wpa_s->scan_runs = 0;
 893         wpa_s->normal_scans = 0;
 894         wpa_s->wps_success = 0;
 895         wpa_s->blacklist_cleared = 0;
 896         wpa_supplicant_req_scan(wpa_s, 0, 0);
 897 }
 898
 899
 900 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 901                        int p2p_group)
 902 {
 903         struct wpa_ssid *ssid;
 904         wpas_clear_wps(wpa_s);
 905         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 906         if (ssid == NULL)
 907                 return -1;
 908         ssid->temporary = 1;
 909         ssid->p2p_group = p2p_group;
 910 #ifdef CONFIG_P2P
 911         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 912                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 913                 if (ssid->ssid) {
 914                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 915                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 916                                   ssid->ssid_len);
 917                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 918                                           "SSID", ssid->ssid, ssid->ssid_len);
 919                 }
 920         }
 921 #endif /* CONFIG_P2P */
 922         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 923         if (wpa_s->wps_fragment_size)
 924                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 925         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 926                                wpa_s, NULL);
 927         wpas_wps_reassoc(wpa_s, ssid, bssid);
 928         return 0;
 929 }
 930
 931
 932 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 933                        const char *pin, int p2p_group, u16 dev_pw_id)
 934 {
 935         struct wpa_ssid *ssid;
 936         char val[128];
 937         unsigned int rpin = 0;
 938
 939         wpas_clear_wps(wpa_s);
 940         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 941         if (ssid == NULL)
 942                 return -1;
 943         ssid->temporary = 1;
 944         ssid->p2p_group = p2p_group;
 945 #ifdef CONFIG_P2P
 946         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 947                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 948                 if (ssid->ssid) {
 949                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 950                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 951                                   ssid->ssid_len);
 952                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 953                                           "SSID", ssid->ssid, ssid->ssid_len);
 954                 }
 955         }
 956 #endif /* CONFIG_P2P */
 957         if (pin)
 958                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 959                             pin, dev_pw_id);
 960         else {
 961                 rpin = wps_generate_pin();
 962                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 963                             rpin, dev_pw_id);
 964         }
 965         wpa_config_set(ssid, "phase1", val, 0);
 966         if (wpa_s->wps_fragment_size)
 967                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 968         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 969                                wpa_s, NULL);
 970         wpa_s->wps_ap_iter = 1;
 971         wpas_wps_reassoc(wpa_s, ssid, bssid);
 972         return rpin;
 973 }
 974
 975
 976 /* Cancel the wps pbc/pin requests */
 977 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 978 {
 979 #ifdef CONFIG_AP
 980         if (wpa_s->ap_iface) {
 981                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 982                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 983         }
 984 #endif /* CONFIG_AP */
 985
 986         if (wpa_s->wpa_state == WPA_SCANNING ||
 987             wpa_s->wpa_state == WPA_DISCONNECTED) {
 988                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 989                 wpa_supplicant_cancel_scan(wpa_s);
 990                 wpas_clear_wps(wpa_s);
 991         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 992                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 993                            "deauthenticate");
 994                 wpa_supplicant_deauthenticate(wpa_s,
 995                                               WLAN_REASON_DEAUTH_LEAVING);
 996                 wpas_clear_wps(wpa_s);
 997         } else {
 998                 wpas_wps_reenable_networks(wpa_s);
 999                 wpas_wps_clear_ap_info(wpa_s);
1000         }
1001
1002         return 0;
1003 }
1004
1005
1006 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1007                        const char *pin, struct wps_new_ap_settings *settings)
1008 {
1009         struct wpa_ssid *ssid;
1010         char val[200];
1011         char *pos, *end;
1012         int res;
1013
1014         if (!pin)
1015                 return -1;
1016         wpas_clear_wps(wpa_s);
1017         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1018         if (ssid == NULL)
1019                 return -1;
1020         ssid->temporary = 1;
1021         pos = val;
1022         end = pos + sizeof(val);
1023         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1024         if (res < 0 || res >= end - pos)
1025                 return -1;
1026         pos += res;
1027         if (settings) {
1028                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1029                                   "new_encr=%s new_key=%s",
1030                                   settings->ssid_hex, settings->auth,
1031                                   settings->encr, settings->key_hex);
1032                 if (res < 0 || res >= end - pos)
1033                         return -1;
1034                 pos += res;
1035         }
1036         res = os_snprintf(pos, end - pos, "\"");
1037         if (res < 0 || res >= end - pos)
1038                 return -1;
1039         wpa_config_set(ssid, "phase1", val, 0);
1040         if (wpa_s->wps_fragment_size)
1041                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1042         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1043                                wpa_s, NULL);
1044         wpas_wps_reassoc(wpa_s, ssid, bssid);
1045         return 0;
1046 }
1047
1048
1049 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1050                                size_t psk_len)
1051 {
1052         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1053                    "STA " MACSTR, MAC2STR(mac_addr));
1054         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1055
1056         /* TODO */
1057
1058         return 0;
1059 }
1060
1061
1062 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1063                                    const struct wps_device_data *dev)
1064 {
1065         char uuid[40], txt[400];
1066         int len;
1067         char devtype[WPS_DEV_TYPE_BUFSIZE];
1068         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1069                 return;
1070         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1071         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1072                           " [%s|%s|%s|%s|%s|%s]",
1073                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1074                           dev->manufacturer, dev->model_name,
1075                           dev->model_number, dev->serial_number,
1076                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1077                                                sizeof(devtype)));
1078         if (len > 0 && len < (int) sizeof(txt))
1079                 wpa_printf(MSG_INFO, "%s", txt);
1080 }
1081
1082
1083 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1084                                     u16 sel_reg_config_methods)
1085 {
1086 #ifdef CONFIG_WPS_ER
1087         struct wpa_supplicant *wpa_s = ctx;
1088
1089         if (wpa_s->wps_er == NULL)
1090                 return;
1091         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1092                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1093                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1094         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1095                            sel_reg_config_methods);
1096 #endif /* CONFIG_WPS_ER */
1097 }
1098
1099
1100 static u16 wps_fix_config_methods(u16 config_methods)
1101 {
1102 #ifdef CONFIG_WPS2
1103         if ((config_methods &
1104              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1105               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1106                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1107                            "virtual_display for WPS 2.0 compliance");
1108                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1109         }
1110         if ((config_methods &
1111              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1112               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1113                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1114                            "virtual_push_button for WPS 2.0 compliance");
1115                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1116         }
1117 #endif /* CONFIG_WPS2 */
1118
1119         return config_methods;
1120 }
1121
1122
1123 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1124                               struct wps_context *wps)
1125 {
1126         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1127         if (is_nil_uuid(wpa_s->conf->uuid)) {
1128                 struct wpa_supplicant *first;
1129                 first = wpa_s->global->ifaces;
1130                 while (first && first->next)
1131                         first = first->next;
1132                 if (first && first != wpa_s) {
1133                         if (wps != wpa_s->global->ifaces->wps)
1134                                 os_memcpy(wps->uuid,
1135                                           wpa_s->global->ifaces->wps->uuid,
1136                                           WPS_UUID_LEN);
1137                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1138                                     "interface", wps->uuid, WPS_UUID_LEN);
1139                 } else {
1140                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1141                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1142                                     "address", wps->uuid, WPS_UUID_LEN);
1143                 }
1144         } else {
1145                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1146                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1147                             wps->uuid, WPS_UUID_LEN);
1148         }
1149 }
1150
1151
1152 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1153                                        struct wps_context *wps)
1154 {
1155         wpabuf_free(wps->dev.vendor_ext_m1);
1156         wps->dev.vendor_ext_m1 = NULL;
1157
1158         if (wpa_s->conf->wps_vendor_ext_m1) {
1159                 wps->dev.vendor_ext_m1 =
1160                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1161                 if (!wps->dev.vendor_ext_m1) {
1162                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1163                                    "allocate memory for vendor_ext_m1");
1164                 }
1165         }
1166 }
1167
1168
1169 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1170 {
1171         struct wps_context *wps;
1172         struct wps_registrar_config rcfg;
1173         struct hostapd_hw_modes *modes;
1174         u16 m;
1175
1176         wps = os_zalloc(sizeof(*wps));
1177         if (wps == NULL)
1178                 return -1;
1179
1180         wps->cred_cb = wpa_supplicant_wps_cred;
1181         wps->event_cb = wpa_supplicant_wps_event;
1182         wps->cb_ctx = wpa_s;
1183
1184         wps->dev.device_name = wpa_s->conf->device_name;
1185         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1186         wps->dev.model_name = wpa_s->conf->model_name;
1187         wps->dev.model_number = wpa_s->conf->model_number;
1188         wps->dev.serial_number = wpa_s->conf->serial_number;
1189         wps->config_methods =
1190                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1191         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1192             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1193                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1194                            "methods are not allowed at the same time");
1195                 os_free(wps);
1196                 return -1;
1197         }
1198         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1199         wps->dev.config_methods = wps->config_methods;
1200         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1201                   WPS_DEV_TYPE_LEN);
1202
1203         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1204         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1205                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1206
1207         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1208
1209         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1210         modes = wpa_s->hw.modes;
1211         if (modes) {
1212                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1213                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1214                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1215                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1216                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1217                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1218                 }
1219         }
1220         if (wps->dev.rf_bands == 0) {
1221                 /*
1222                  * Default to claiming support for both bands if the driver
1223                  * does not provide support for fetching supported bands.
1224                  */
1225                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1226         }
1227         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1228         wpas_wps_set_uuid(wpa_s, wps);
1229
1230         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1231         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1232
1233         os_memset(&rcfg, 0, sizeof(rcfg));
1234         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1235         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1236         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1237         rcfg.cb_ctx = wpa_s;
1238
1239         wps->registrar = wps_registrar_init(wps, &rcfg);
1240         if (wps->registrar == NULL) {
1241                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1242                 os_free(wps);
1243                 return -1;
1244         }
1245
1246         wpa_s->wps = wps;
1247
1248         return 0;
1249 }
1250
1251
1252 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1253 {
1254         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1255         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1256         wpas_wps_clear_ap_info(wpa_s);
1257
1258         if (wpa_s->wps == NULL)
1259                 return;
1260
1261 #ifdef CONFIG_WPS_ER
1262         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1263         wpa_s->wps_er = NULL;
1264 #endif /* CONFIG_WPS_ER */
1265
1266         wps_registrar_deinit(wpa_s->wps->registrar);
1267         wpabuf_free(wpa_s->wps->dh_pubkey);
1268         wpabuf_free(wpa_s->wps->dh_privkey);
1269         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1270         os_free(wpa_s->wps->network_key);
1271         os_free(wpa_s->wps);
1272         wpa_s->wps = NULL;
1273 }
1274
1275
1276 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1277                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1278 {
1279         struct wpabuf *wps_ie;
1280
1281         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1282                 return -1;
1283
1284         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1285         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1286                 if (!wps_ie) {
1287                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1288                         return 0;
1289                 }
1290
1291                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1292                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1293                                    "without active PBC Registrar");
1294                         wpabuf_free(wps_ie);
1295                         return 0;
1296                 }
1297
1298                 /* TODO: overlap detection */
1299                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1300                            "(Active PBC)");
1301                 wpabuf_free(wps_ie);
1302                 return 1;
1303         }
1304
1305         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1306                 if (!wps_ie) {
1307                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1308                         return 0;
1309                 }
1310
1311                 /*
1312                  * Start with WPS APs that advertise our address as an
1313                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1314                  * allow any WPS AP after couple of scans since some APs do not
1315                  * set Selected Registrar attribute properly when using
1316                  * external Registrar.
1317                  */
1318                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1319                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1320                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1321                                            "without active PIN Registrar");
1322                                 wpabuf_free(wps_ie);
1323                                 return 0;
1324                         }
1325                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1326                 } else {
1327                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1328                                    "(Authorized MAC or Active PIN)");
1329                 }
1330                 wpabuf_free(wps_ie);
1331                 return 1;
1332         }
1333
1334         if (wps_ie) {
1335                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1336                 wpabuf_free(wps_ie);
1337                 return 1;
1338         }
1339
1340         return -1;
1341 }
1342
1343
1344 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1345                               struct wpa_ssid *ssid,
1346                               struct wpa_bss *bss)
1347 {
1348         struct wpabuf *wps_ie = NULL;
1349         int ret = 0;
1350
1351         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1352                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1353                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1354                         /* allow wildcard SSID for WPS PBC */
1355                         ret = 1;
1356                 }
1357         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1358                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1359                 if (wps_ie &&
1360                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1361                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1362                         /* allow wildcard SSID for WPS PIN */
1363                         ret = 1;
1364                 }
1365         }
1366
1367         if (!ret && ssid->bssid_set &&
1368             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1369                 /* allow wildcard SSID due to hardcoded BSSID match */
1370                 ret = 1;
1371         }
1372
1373 #ifdef CONFIG_WPS_STRICT
1374         if (wps_ie) {
1375                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1376                                                    0, bss->bssid) < 0)
1377                         ret = 0;
1378                 if (bss->beacon_ie_len) {
1379                         struct wpabuf *bcn_wps;
1380                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1381                                 bss, WPS_IE_VENDOR_TYPE);
1382                         if (bcn_wps == NULL) {
1383                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1384                                            "missing from AP Beacon");
1385                                 ret = 0;
1386                         } else {
1387                                 if (wps_validate_beacon(wps_ie) < 0)
1388                                         ret = 0;
1389                                 wpabuf_free(bcn_wps);
1390                         }
1391                 }
1392         }
1393 #endif /* CONFIG_WPS_STRICT */
1394
1395         wpabuf_free(wps_ie);
1396
1397         return ret;
1398 }
1399
1400
1401 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1402                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1403 {
1404         const u8 *sel_uuid, *uuid;
1405         struct wpabuf *wps_ie;
1406         int ret = 0;
1407         struct wpa_bss *bss;
1408
1409         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1410                 return 0;
1411
1412         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1413                    "present in scan results; selected BSSID " MACSTR,
1414                    MAC2STR(selected->bssid));
1415
1416         /* Make sure that only one AP is in active PBC mode */
1417         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1418         if (wps_ie) {
1419                 sel_uuid = wps_get_uuid_e(wps_ie);
1420                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1421                             sel_uuid, UUID_LEN);
1422         } else {
1423                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1424                            "WPS IE?!");
1425                 sel_uuid = NULL;
1426         }
1427
1428         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1429                 struct wpabuf *ie;
1430                 if (bss == selected)
1431                         continue;
1432                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1433                 if (!ie)
1434                         continue;
1435                 if (!wps_is_selected_pbc_registrar(ie)) {
1436                         wpabuf_free(ie);
1437                         continue;
1438                 }
1439                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1440                            MACSTR, MAC2STR(bss->bssid));
1441                 uuid = wps_get_uuid_e(ie);
1442                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1443                             uuid, UUID_LEN);
1444                 if (sel_uuid == NULL || uuid == NULL ||
1445                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1446                         ret = 1; /* PBC overlap */
1447                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1448                                 MACSTR " and " MACSTR,
1449                                 MAC2STR(selected->bssid),
1450                                 MAC2STR(bss->bssid));
1451                         wpabuf_free(ie);
1452                         break;
1453                 }
1454
1455                 /* TODO: verify that this is reasonable dual-band situation */
1456
1457                 wpabuf_free(ie);
1458         }
1459
1460         wpabuf_free(wps_ie);
1461
1462         return ret;
1463 }
1464
1465
1466 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1467 {
1468         struct wpa_bss *bss;
1469         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1470
1471         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1472                 return;
1473
1474         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1475                 struct wpabuf *ie;
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                         pbc++;
1481                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1482                         auth++;
1483                 else if (wps_is_selected_pin_registrar(ie))
1484                         pin++;
1485                 else
1486                         wps++;
1487                 wpabuf_free(ie);
1488         }
1489
1490         if (pbc)
1491                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1492         else if (auth)
1493                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1494         else if (pin)
1495                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1496         else if (wps)
1497                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1498 }
1499
1500
1501 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1502 {
1503         struct wpa_ssid *ssid;
1504
1505         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1506                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1507                         return 1;
1508         }
1509
1510         return 0;
1511 }
1512
1513
1514 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1515                               char *end)
1516 {
1517         struct wpabuf *wps_ie;
1518         int ret;
1519
1520         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1521         if (wps_ie == NULL)
1522                 return 0;
1523
1524         ret = wps_attr_text(wps_ie, buf, end);
1525         wpabuf_free(wps_ie);
1526         return ret;
1527 }
1528
1529
1530 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1531 {
1532 #ifdef CONFIG_WPS_ER
1533         if (wpa_s->wps_er) {
1534                 wps_er_refresh(wpa_s->wps_er);
1535                 return 0;
1536         }
1537         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1538         if (wpa_s->wps_er == NULL)
1539                 return -1;
1540         return 0;
1541 #else /* CONFIG_WPS_ER */
1542         return 0;
1543 #endif /* CONFIG_WPS_ER */
1544 }
1545
1546
1547 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1548 {
1549 #ifdef CONFIG_WPS_ER
1550         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1551         wpa_s->wps_er = NULL;
1552 #endif /* CONFIG_WPS_ER */
1553         return 0;
1554 }
1555
1556
1557 #ifdef CONFIG_WPS_ER
1558 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1559                         const char *uuid, const char *pin)
1560 {
1561         u8 u[UUID_LEN];
1562         int any = 0;
1563
1564         if (os_strcmp(uuid, "any") == 0)
1565                 any = 1;
1566         else if (uuid_str2bin(uuid, u))
1567                 return -1;
1568         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1569                                      any ? NULL : u,
1570                                      (const u8 *) pin, os_strlen(pin), 300);
1571 }
1572
1573
1574 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1575 {
1576         u8 u[UUID_LEN];
1577
1578         if (uuid_str2bin(uuid, u))
1579                 return -1;
1580         return wps_er_pbc(wpa_s->wps_er, u);
1581 }
1582
1583
1584 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1585                       const char *pin)
1586 {
1587         u8 u[UUID_LEN];
1588
1589         if (uuid_str2bin(uuid, u))
1590                 return -1;
1591         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1592                             os_strlen(pin));
1593 }
1594
1595
1596 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1597                            int id)
1598 {
1599         u8 u[UUID_LEN];
1600         struct wpa_ssid *ssid;
1601         struct wps_credential cred;
1602
1603         if (uuid_str2bin(uuid, u))
1604                 return -1;
1605         ssid = wpa_config_get_network(wpa_s->conf, id);
1606         if (ssid == NULL || ssid->ssid == NULL)
1607                 return -1;
1608
1609         os_memset(&cred, 0, sizeof(cred));
1610         if (ssid->ssid_len > 32)
1611                 return -1;
1612         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1613         cred.ssid_len = ssid->ssid_len;
1614         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1615                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1616                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1617                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1618                         cred.encr_type = WPS_ENCR_AES;
1619                 else
1620                         cred.encr_type = WPS_ENCR_TKIP;
1621                 if (ssid->passphrase) {
1622                         cred.key_len = os_strlen(ssid->passphrase);
1623                         if (cred.key_len >= 64)
1624                                 return -1;
1625                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1626                 } else if (ssid->psk_set) {
1627                         cred.key_len = 32;
1628                         os_memcpy(cred.key, ssid->psk, 32);
1629                 } else
1630                         return -1;
1631         } else {
1632                 cred.auth_type = WPS_AUTH_OPEN;
1633                 cred.encr_type = WPS_ENCR_NONE;
1634         }
1635         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1636 }
1637
1638
1639 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1640                        const char *pin, struct wps_new_ap_settings *settings)
1641 {
1642         u8 u[UUID_LEN];
1643         struct wps_credential cred;
1644         size_t len;
1645
1646         if (uuid_str2bin(uuid, u))
1647                 return -1;
1648         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1649             settings->encr == NULL || settings->key_hex == NULL)
1650                 return -1;
1651
1652         os_memset(&cred, 0, sizeof(cred));
1653         len = os_strlen(settings->ssid_hex);
1654         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1655             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1656                 return -1;
1657         cred.ssid_len = len / 2;
1658
1659         len = os_strlen(settings->key_hex);
1660         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1661             hexstr2bin(settings->key_hex, cred.key, len / 2))
1662                 return -1;
1663         cred.key_len = len / 2;
1664
1665         if (os_strcmp(settings->auth, "OPEN") == 0)
1666                 cred.auth_type = WPS_AUTH_OPEN;
1667         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1668                 cred.auth_type = WPS_AUTH_WPAPSK;
1669         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1670                 cred.auth_type = WPS_AUTH_WPA2PSK;
1671         else
1672                 return -1;
1673
1674         if (os_strcmp(settings->encr, "NONE") == 0)
1675                 cred.encr_type = WPS_ENCR_NONE;
1676         else if (os_strcmp(settings->encr, "WEP") == 0)
1677                 cred.encr_type = WPS_ENCR_WEP;
1678         else if (os_strcmp(settings->encr, "TKIP") == 0)
1679                 cred.encr_type = WPS_ENCR_TKIP;
1680         else if (os_strcmp(settings->encr, "CCMP") == 0)
1681                 cred.encr_type = WPS_ENCR_AES;
1682         else
1683                 return -1;
1684
1685         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1686                              os_strlen(pin), &cred);
1687 }
1688
1689
1690 #ifdef CONFIG_WPS_NFC
1691 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1692                                              int ndef, const char *uuid)
1693 {
1694         struct wpabuf *ret;
1695         u8 u[UUID_LEN];
1696
1697         if (!wpa_s->wps_er)
1698                 return NULL;
1699
1700         if (uuid_str2bin(uuid, u))
1701                 return NULL;
1702
1703         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1704         if (ndef && ret) {
1705                 struct wpabuf *tmp;
1706                 tmp = ndef_build_wifi(ret);
1707                 wpabuf_free(ret);
1708                 if (tmp == NULL)
1709                         return NULL;
1710                 ret = tmp;
1711         }
1712
1713         return ret;
1714 }
1715 #endif /* CONFIG_WPS_NFC */
1716
1717
1718 static int callbacks_pending = 0;
1719
1720 static void wpas_wps_terminate_cb(void *ctx)
1721 {
1722         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1723         if (--callbacks_pending <= 0)
1724                 eloop_terminate();
1725 }
1726 #endif /* CONFIG_WPS_ER */
1727
1728
1729 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1730 {
1731 #ifdef CONFIG_WPS_ER
1732         if (wpa_s->wps_er) {
1733                 callbacks_pending++;
1734                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1735                 wpa_s->wps_er = NULL;
1736                 return 1;
1737         }
1738 #endif /* CONFIG_WPS_ER */
1739         return 0;
1740 }
1741
1742
1743 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1744 {
1745         struct wpa_ssid *ssid;
1746
1747         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1748                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1749                         return 1;
1750         }
1751
1752         return 0;
1753 }
1754
1755
1756 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1757 {
1758         struct wps_context *wps = wpa_s->wps;
1759
1760         if (wps == NULL)
1761                 return;
1762
1763         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1764                 wps->config_methods = wps_config_methods_str2bin(
1765                         wpa_s->conf->config_methods);
1766                 if ((wps->config_methods &
1767                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1768                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1769                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1770                                    "config methods are not allowed at the "
1771                                    "same time");
1772                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1773                 }
1774         }
1775         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1776         wps->dev.config_methods = wps->config_methods;
1777
1778         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1779                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1780                           WPS_DEV_TYPE_LEN);
1781
1782         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1783                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1784                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1785                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1786         }
1787
1788         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1789                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1790
1791         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1792                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1793
1794         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1795                 wpas_wps_set_uuid(wpa_s, wps);
1796
1797         if (wpa_s->conf->changed_parameters &
1798             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1799                 /* Update pointers to make sure they refer current values */
1800                 wps->dev.device_name = wpa_s->conf->device_name;
1801                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1802                 wps->dev.model_name = wpa_s->conf->model_name;
1803                 wps->dev.model_number = wpa_s->conf->model_number;
1804                 wps->dev.serial_number = wpa_s->conf->serial_number;
1805         }
1806 }
1807
1808
1809 #ifdef CONFIG_WPS_NFC
1810
1811 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1812 {
1813         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1814                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1815                                  &wpa_s->conf->wps_nfc_dh_privkey,
1816                                  &wpa_s->conf->wps_nfc_dev_pw);
1817 }
1818
1819
1820 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1821 {
1822         struct wps_context *wps = wpa_s->wps;
1823         char pw[32 * 2 + 1];
1824
1825         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1826             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1827             wpa_s->conf->wps_nfc_dev_pw == NULL)
1828                 return -1;
1829
1830         dh5_free(wps->dh_ctx);
1831         wpabuf_free(wps->dh_pubkey);
1832         wpabuf_free(wps->dh_privkey);
1833         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1834         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1835         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1836                 wps->dh_ctx = NULL;
1837                 wpabuf_free(wps->dh_pubkey);
1838                 wps->dh_pubkey = NULL;
1839                 wpabuf_free(wps->dh_privkey);
1840                 wps->dh_privkey = NULL;
1841                 return -1;
1842         }
1843         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1844         if (wps->dh_ctx == NULL)
1845                 return -1;
1846
1847         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1848                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1849                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1850         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1851                                   wpa_s->conf->wps_nfc_dev_pw_id);
1852 }
1853
1854
1855 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1856                              struct wps_parse_attr *attr)
1857 {
1858         wpa_s->wps_ap_channel = 0;
1859
1860         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1861                 return -1;
1862
1863         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1864                 return 0;
1865
1866         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1867                    "based on the received credential added");
1868         wpa_s->normal_scans = 0;
1869         wpa_supplicant_reinit_autoscan(wpa_s);
1870         if (wpa_s->wps_ap_channel) {
1871                 u16 chan = wpa_s->wps_ap_channel;
1872                 int freq = 0;
1873
1874                 if (chan >= 1 && chan <= 13)
1875                         freq = 2407 + 5 * chan;
1876                 else if (chan == 14)
1877                         freq = 2484;
1878                 else if (chan >= 30)
1879                         freq = 5000 + 5 * chan;
1880
1881                 if (freq) {
1882                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1883                                    "AP channel %u -> %u MHz", chan, freq);
1884                         wpa_s->after_wps = 5;
1885                         wpa_s->wps_freq = freq;
1886                 }
1887         }
1888         wpa_s->disconnected = 0;
1889         wpa_s->reassociate = 1;
1890         wpa_supplicant_req_scan(wpa_s, 0, 0);
1891
1892         return 0;
1893 }
1894
1895
1896 #ifdef CONFIG_WPS_ER
1897 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1898                                            struct wps_parse_attr *attr)
1899 {
1900         return wps_registrar_add_nfc_password_token(
1901                 wpa_s->wps->registrar, attr->oob_dev_password,
1902                 attr->oob_dev_password_len);
1903 }
1904 #endif /* CONFIG_WPS_ER */
1905
1906
1907 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1908                                     const struct wpabuf *wps)
1909 {
1910         struct wps_parse_attr attr;
1911
1912         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1913
1914         if (wps_parse_msg(wps, &attr)) {
1915                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1916                 return -1;
1917         }
1918
1919         if (attr.num_cred)
1920                 return wpas_wps_use_cred(wpa_s, &attr);
1921
1922 #ifdef CONFIG_WPS_ER
1923         if (attr.oob_dev_password)
1924                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1925 #endif /* CONFIG_WPS_ER */
1926
1927         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1928         return -1;
1929 }
1930
1931
1932 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1933                           const struct wpabuf *data)
1934 {
1935         const struct wpabuf *wps = data;
1936         struct wpabuf *tmp = NULL;
1937         int ret;
1938
1939         if (wpabuf_len(data) < 4)
1940                 return -1;
1941
1942         if (*wpabuf_head_u8(data) != 0x10) {
1943                 /* Assume this contains full NDEF record */
1944                 tmp = ndef_parse_wifi(data);
1945                 if (tmp == NULL) {
1946                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1947                         return -1;
1948                 }
1949                 wps = tmp;
1950         }
1951
1952         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1953         wpabuf_free(tmp);
1954         return ret;
1955 }
1956
1957
1958 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s)
1959 {
1960         return ndef_build_wifi_hr();
1961 }
1962
1963
1964 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
1965 {
1966         return NULL;
1967 }
1968
1969
1970 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
1971                                  const struct wpabuf *data)
1972 {
1973         /* TODO */
1974         return -1;
1975 }
1976
1977
1978 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
1979                                  const struct wpabuf *data)
1980 {
1981         struct wpabuf *wps;
1982         int ret;
1983
1984         wps = ndef_parse_wifi(data);
1985         if (wps == NULL)
1986                 return -1;
1987         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1988                    "payload from NFC connection handover");
1989         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
1990         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1991         wpabuf_free(wps);
1992
1993         return ret;
1994 }
1995
1996 #endif /* CONFIG_WPS_NFC */
1997
1998
1999 extern int wpa_debug_level;
2000
2001 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2002 {
2003         size_t i;
2004         struct os_time now;
2005
2006         if (wpa_debug_level > MSG_DEBUG)
2007                 return;
2008
2009         if (wpa_s->wps_ap == NULL)
2010                 return;
2011
2012         os_get_time(&now);
2013
2014         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2015                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2016                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2017
2018                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2019                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2020                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2021                            ap->last_attempt.sec > 0 ?
2022                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2023                            e ? e->count : 0);
2024         }
2025 }
2026
2027
2028 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2029                                                  const u8 *bssid)
2030 {
2031         size_t i;
2032
2033         if (wpa_s->wps_ap == NULL)
2034                 return NULL;
2035
2036         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2037                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2038                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2039                         return ap;
2040         }
2041
2042         return NULL;
2043 }
2044
2045
2046 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2047                                         struct wpa_scan_res *res)
2048 {
2049         struct wpabuf *wps;
2050         enum wps_ap_info_type type;
2051         struct wps_ap_info *ap;
2052         int r;
2053
2054         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2055                 return;
2056
2057         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2058         if (wps == NULL)
2059                 return;
2060
2061         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2062         if (r == 2)
2063                 type = WPS_AP_SEL_REG_OUR;
2064         else if (r == 1)
2065                 type = WPS_AP_SEL_REG;
2066         else
2067                 type = WPS_AP_NOT_SEL_REG;
2068
2069         wpabuf_free(wps);
2070
2071         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2072         if (ap) {
2073                 if (ap->type != type) {
2074                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2075                                    " changed type %d -> %d",
2076                                    MAC2STR(res->bssid), ap->type, type);
2077                         ap->type = type;
2078                         if (type != WPS_AP_NOT_SEL_REG)
2079                                 wpa_blacklist_del(wpa_s, ap->bssid);
2080                 }
2081                 return;
2082         }
2083
2084         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2085                               sizeof(struct wps_ap_info));
2086         if (ap == NULL)
2087                 return;
2088
2089         wpa_s->wps_ap = ap;
2090         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2091         wpa_s->num_wps_ap++;
2092
2093         os_memset(ap, 0, sizeof(*ap));
2094         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2095         ap->type = type;
2096         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2097                    MAC2STR(ap->bssid), ap->type);
2098 }
2099
2100
2101 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2102                              struct wpa_scan_results *scan_res)
2103 {
2104         size_t i;
2105
2106         for (i = 0; i < scan_res->num; i++)
2107                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2108
2109         wpas_wps_dump_ap_info(wpa_s);
2110 }
2111
2112
2113 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2114 {
2115         struct wps_ap_info *ap;
2116         if (!wpa_s->wps_ap_iter)
2117                 return;
2118         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2119         if (ap == NULL)
2120                 return;
2121         ap->tries++;
2122         os_get_time(&ap->last_attempt);
2123 }