wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2010, 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 "config.h"
  25 #include "wpa_supplicant_i.h"
  26 #include "driver_i.h"
  27 #include "notify.h"
  28 #include "blacklist.h"
  29 #include "bss.h"
  30 #include "scan.h"
  31 #include "ap.h"
  32 #include "p2p/p2p.h"
  33 #include "p2p_supplicant.h"
  34 #include "wps_supplicant.h"
  35
  36
  37 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  38 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  39 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  40
  41 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  42 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  43
  44
  45 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  46 {
  47         if (!wpa_s->wps_success &&
  48             wpa_s->current_ssid &&
  49             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  50                 const u8 *bssid = wpa_s->bssid;
  51                 if (is_zero_ether_addr(bssid))
  52                         bssid = wpa_s->pending_bssid;
  53
  54                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  55                            " did not succeed - continue trying to find "
  56                            "suitable AP", MAC2STR(bssid));
  57                 wpa_blacklist_add(wpa_s, bssid);
  58
  59                 wpa_supplicant_deauthenticate(wpa_s,
  60                                               WLAN_REASON_DEAUTH_LEAVING);
  61                 wpa_s->reassociate = 1;
  62                 wpa_supplicant_req_scan(wpa_s,
  63                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  64                 wpa_s->blacklist_cleared = 0;
  65                 return 1;
  66         }
  67
  68         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  69         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  70                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  71
  72         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  73             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  74                 int disabled = wpa_s->current_ssid->disabled;
  75                 unsigned int freq = wpa_s->assoc_freq;
  76                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  77                            "try to associate with the received credential "
  78                            "(freq=%u)", freq);
  79                 wpa_supplicant_deauthenticate(wpa_s,
  80                                               WLAN_REASON_DEAUTH_LEAVING);
  81                 if (disabled) {
  82                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  83                                    "disabled - wait for user to enable");
  84                         return 1;
  85                 }
  86                 wpa_s->after_wps = 5;
  87                 wpa_s->wps_freq = freq;
  88                 wpa_s->normal_scans = 0;
  89                 wpa_s->reassociate = 1;
  90                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  91                 return 1;
  92         }
  93
  94         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  95                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  96                            "for external credential processing");
  97                 wpas_clear_wps(wpa_s);
  98                 wpa_supplicant_deauthenticate(wpa_s,
  99                                               WLAN_REASON_DEAUTH_LEAVING);
 100                 return 1;
 101         }
 102
 103         return 0;
 104 }
 105
 106
 107 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 108                                          struct wpa_ssid *ssid,
 109                                          const struct wps_credential *cred)
 110 {
 111         struct wpa_driver_capa capa;
 112         struct wpa_bss *bss;
 113         const u8 *ie;
 114         struct wpa_ie_data adv;
 115         int wpa2 = 0, ccmp = 0;
 116
 117         /*
 118          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 119          * case they are configured for mixed mode operation (WPA+WPA2 and
 120          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 121          * actually supports stronger security and select that if the client
 122          * has support for it, too.
 123          */
 124
 125         if (wpa_drv_get_capa(wpa_s, &capa))
 126                 return; /* Unknown what driver supports */
 127
 128         if (ssid->ssid == NULL)
 129                 return;
 130         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 131         if (bss == NULL) {
 132                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 133                            "table - use credential as-is");
 134                 return;
 135         }
 136
 137         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 138
 139         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 140         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 141                 wpa2 = 1;
 142                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 143                         ccmp = 1;
 144         } else {
 145                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 146                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 147                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 148                         ccmp = 1;
 149         }
 150
 151         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 152             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 153                 /*
 154                  * TODO: This could be the initial AP configuration and the
 155                  * Beacon contents could change shortly. Should request a new
 156                  * scan and delay addition of the network until the updated
 157                  * scan results are available.
 158                  */
 159                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 160                            "support - use credential as-is");
 161                 return;
 162         }
 163
 164         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 165             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 166             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 167                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 168                            "based on scan results");
 169                 if (wpa_s->conf->ap_scan == 1)
 170                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 171                 else
 172                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 173         }
 174
 175         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 176             (ssid->proto & WPA_PROTO_WPA) &&
 177             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 178                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 179                            "based on scan results");
 180                 if (wpa_s->conf->ap_scan == 1)
 181                         ssid->proto |= WPA_PROTO_RSN;
 182                 else
 183                         ssid->proto = WPA_PROTO_RSN;
 184         }
 185 }
 186
 187
 188 static int wpa_supplicant_wps_cred(void *ctx,
 189                                    const struct wps_credential *cred)
 190 {
 191         struct wpa_supplicant *wpa_s = ctx;
 192         struct wpa_ssid *ssid = wpa_s->current_ssid;
 193         u8 key_idx = 0;
 194         u16 auth_type;
 195 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 196         int registrar = 0;
 197 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 198
 199         if ((wpa_s->conf->wps_cred_processing == 1 ||
 200              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 201                 size_t blen = cred->cred_attr_len * 2 + 1;
 202                 char *buf = os_malloc(blen);
 203                 if (buf) {
 204                         wpa_snprintf_hex(buf, blen,
 205                                          cred->cred_attr, cred->cred_attr_len);
 206                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 207                                 WPS_EVENT_CRED_RECEIVED, buf);
 208                         os_free(buf);
 209                 }
 210
 211                 wpas_notify_wps_credential(wpa_s, cred);
 212         } else
 213                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 214
 215         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 216                         cred->cred_attr, cred->cred_attr_len);
 217
 218         if (wpa_s->conf->wps_cred_processing == 1)
 219                 return 0;
 220
 221         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 222         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 223                    cred->auth_type);
 224         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 225         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 226         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 227                         cred->key, cred->key_len);
 228         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 229                    MAC2STR(cred->mac_addr));
 230
 231         auth_type = cred->auth_type;
 232         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 233                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 234                            "auth_type into WPA2PSK");
 235                 auth_type = WPS_AUTH_WPA2PSK;
 236         }
 237
 238         if (auth_type != WPS_AUTH_OPEN &&
 239             auth_type != WPS_AUTH_SHARED &&
 240             auth_type != WPS_AUTH_WPAPSK &&
 241             auth_type != WPS_AUTH_WPA2PSK) {
 242                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 243                            "unsupported authentication type 0x%x",
 244                            auth_type);
 245                 return 0;
 246         }
 247
 248         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 249                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 250                            "on the received credential");
 251 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 252                 if (ssid->eap.identity &&
 253                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 254                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 255                               WSC_ID_REGISTRAR_LEN) == 0)
 256                         registrar = 1;
 257 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 258                 os_free(ssid->eap.identity);
 259                 ssid->eap.identity = NULL;
 260                 ssid->eap.identity_len = 0;
 261                 os_free(ssid->eap.phase1);
 262                 ssid->eap.phase1 = NULL;
 263                 os_free(ssid->eap.eap_methods);
 264                 ssid->eap.eap_methods = NULL;
 265                 if (!ssid->p2p_group)
 266                         ssid->temporary = 0;
 267                 ssid->bssid_set = 0;
 268         } else {
 269                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 270                            "received credential");
 271                 ssid = wpa_config_add_network(wpa_s->conf);
 272                 if (ssid == NULL)
 273                         return -1;
 274                 wpas_notify_network_added(wpa_s, ssid);
 275         }
 276
 277         wpa_config_set_network_defaults(ssid);
 278
 279         os_free(ssid->ssid);
 280         ssid->ssid = os_malloc(cred->ssid_len);
 281         if (ssid->ssid) {
 282                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 283                 ssid->ssid_len = cred->ssid_len;
 284         }
 285
 286         switch (cred->encr_type) {
 287         case WPS_ENCR_NONE:
 288                 break;
 289         case WPS_ENCR_WEP:
 290                 if (cred->key_len <= 0)
 291                         break;
 292                 if (cred->key_len != 5 && cred->key_len != 13 &&
 293                     cred->key_len != 10 && cred->key_len != 26) {
 294                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 295                                    "%lu", (unsigned long) cred->key_len);
 296                         return -1;
 297                 }
 298                 if (cred->key_idx > NUM_WEP_KEYS) {
 299                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 300                                    cred->key_idx);
 301                         return -1;
 302                 }
 303                 if (cred->key_idx)
 304                         key_idx = cred->key_idx - 1;
 305                 if (cred->key_len == 10 || cred->key_len == 26) {
 306                         if (hexstr2bin((char *) cred->key,
 307                                        ssid->wep_key[key_idx],
 308                                        cred->key_len / 2) < 0) {
 309                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 310                                            "%d", key_idx);
 311                                 return -1;
 312                         }
 313                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 314                 } else {
 315                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 316                                   cred->key_len);
 317                         ssid->wep_key_len[key_idx] = cred->key_len;
 318                 }
 319                 ssid->wep_tx_keyidx = key_idx;
 320                 break;
 321         case WPS_ENCR_TKIP:
 322                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 323                 break;
 324         case WPS_ENCR_AES:
 325                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 326                 break;
 327         }
 328
 329         switch (auth_type) {
 330         case WPS_AUTH_OPEN:
 331                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 332                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 333                 ssid->proto = 0;
 334 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 335                 if (registrar) {
 336                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 337                                 "id=%d - Credentials for an open "
 338                                 "network disabled by default - use "
 339                                 "'select_network %d' to enable",
 340                                 ssid->id, ssid->id);
 341                         ssid->disabled = 1;
 342                 }
 343 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 344                 break;
 345         case WPS_AUTH_SHARED:
 346                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 347                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 348                 ssid->proto = 0;
 349                 break;
 350         case WPS_AUTH_WPAPSK:
 351                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 352                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 353                 ssid->proto = WPA_PROTO_WPA;
 354                 break;
 355         case WPS_AUTH_WPA:
 356                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 357                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 358                 ssid->proto = WPA_PROTO_WPA;
 359                 break;
 360         case WPS_AUTH_WPA2:
 361                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 362                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 363                 ssid->proto = WPA_PROTO_RSN;
 364                 break;
 365         case WPS_AUTH_WPA2PSK:
 366                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 367                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 368                 ssid->proto = WPA_PROTO_RSN;
 369                 break;
 370         }
 371
 372         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 373                 if (cred->key_len == 2 * PMK_LEN) {
 374                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 375                                        PMK_LEN)) {
 376                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 377                                            "Key");
 378                                 return -1;
 379                         }
 380                         ssid->psk_set = 1;
 381                         ssid->export_keys = 1;
 382                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 383                         os_free(ssid->passphrase);
 384                         ssid->passphrase = os_malloc(cred->key_len + 1);
 385                         if (ssid->passphrase == NULL)
 386                                 return -1;
 387                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 388                         ssid->passphrase[cred->key_len] = '\0';
 389                         wpa_config_update_psk(ssid);
 390                         ssid->export_keys = 1;
 391                 } else {
 392                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 393                                    "length %lu",
 394                                    (unsigned long) cred->key_len);
 395                         return -1;
 396                 }
 397         }
 398
 399         wpas_wps_security_workaround(wpa_s, ssid, cred);
 400
 401 #ifndef CONFIG_NO_CONFIG_WRITE
 402         if (wpa_s->conf->update_config &&
 403             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 404                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 405                 return -1;
 406         }
 407 #endif /* CONFIG_NO_CONFIG_WRITE */
 408
 409         return 0;
 410 }
 411
 412
 413 #ifdef CONFIG_P2P
 414 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 415 {
 416         struct wpa_supplicant *wpa_s = eloop_ctx;
 417         wpas_p2p_notif_pbc_overlap(wpa_s);
 418 }
 419 #endif /* CONFIG_P2P */
 420
 421
 422 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 423                                          struct wps_event_m2d *m2d)
 424 {
 425         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 426                 "dev_password_id=%d config_error=%d",
 427                 m2d->dev_password_id, m2d->config_error);
 428         wpas_notify_wps_event_m2d(wpa_s, m2d);
 429 #ifdef CONFIG_P2P
 430         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 431                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 432                         "dev_password_id=%d config_error=%d",
 433                         m2d->dev_password_id, m2d->config_error);
 434         }
 435         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 436                 /*
 437                  * Notify P2P from eloop timeout to avoid issues with the
 438                  * interface getting removed while processing a message.
 439                  */
 440                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 441                                        NULL);
 442         }
 443 #endif /* CONFIG_P2P */
 444 }
 445
 446
 447 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 448         "No Error", /* WPS_EI_NO_ERROR */
 449         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 450         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 451 };
 452
 453 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 454                                           struct wps_event_fail *fail)
 455 {
 456         if (fail->error_indication > 0 &&
 457             fail->error_indication < NUM_WPS_EI_VALUES) {
 458                 wpa_msg(wpa_s, MSG_INFO,
 459                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 460                         fail->msg, fail->config_error, fail->error_indication,
 461                         wps_event_fail_reason[fail->error_indication]);
 462                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 463                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 464                                 "msg=%d config_error=%d reason=%d (%s)",
 465                                 fail->msg, fail->config_error,
 466                                 fail->error_indication,
 467                                 wps_event_fail_reason[fail->error_indication]);
 468         } else {
 469                 wpa_msg(wpa_s, MSG_INFO,
 470                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 471                         fail->msg, fail->config_error);
 472                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 473                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 474                                 "msg=%d config_error=%d",
 475                                 fail->msg, fail->config_error);
 476         }
 477         wpas_clear_wps(wpa_s);
 478         wpas_notify_wps_event_fail(wpa_s, fail);
 479 #ifdef CONFIG_P2P
 480         wpas_p2p_wps_failed(wpa_s, fail);
 481 #endif /* CONFIG_P2P */
 482 }
 483
 484
 485 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 486 {
 487         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 488         wpa_s->wps_success = 1;
 489         wpas_notify_wps_event_success(wpa_s);
 490 #ifdef CONFIG_P2P
 491         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 492 #endif /* CONFIG_P2P */
 493 }
 494
 495
 496 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 497                                                struct wps_event_er_ap *ap)
 498 {
 499         char uuid_str[100];
 500         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 501
 502         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 503         if (ap->pri_dev_type)
 504                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 505                                      sizeof(dev_type));
 506         else
 507                 dev_type[0] = '\0';
 508
 509         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 510                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 511                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 512                 ap->friendly_name ? ap->friendly_name : "",
 513                 ap->manufacturer ? ap->manufacturer : "",
 514                 ap->model_description ? ap->model_description : "",
 515                 ap->model_name ? ap->model_name : "",
 516                 ap->manufacturer_url ? ap->manufacturer_url : "",
 517                 ap->model_url ? ap->model_url : "");
 518 }
 519
 520
 521 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 522                                                   struct wps_event_er_ap *ap)
 523 {
 524         char uuid_str[100];
 525         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 526         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 527 }
 528
 529
 530 static void wpa_supplicant_wps_event_er_enrollee_add(
 531         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 532 {
 533         char uuid_str[100];
 534         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 535
 536         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 537         if (enrollee->pri_dev_type)
 538                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 539                                      sizeof(dev_type));
 540         else
 541                 dev_type[0] = '\0';
 542
 543         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 544                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 545                 "|%s|%s|%s|%s|%s|",
 546                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 547                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 548                 enrollee->dev_name ? enrollee->dev_name : "",
 549                 enrollee->manufacturer ? enrollee->manufacturer : "",
 550                 enrollee->model_name ? enrollee->model_name : "",
 551                 enrollee->model_number ? enrollee->model_number : "",
 552                 enrollee->serial_number ? enrollee->serial_number : "");
 553 }
 554
 555
 556 static void wpa_supplicant_wps_event_er_enrollee_remove(
 557         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 558 {
 559         char uuid_str[100];
 560         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 561         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 562                 uuid_str, MAC2STR(enrollee->mac_addr));
 563 }
 564
 565
 566 static void wpa_supplicant_wps_event_er_ap_settings(
 567         struct wpa_supplicant *wpa_s,
 568         struct wps_event_er_ap_settings *ap_settings)
 569 {
 570         char uuid_str[100];
 571         char key_str[65];
 572         const struct wps_credential *cred = ap_settings->cred;
 573
 574         key_str[0] = '\0';
 575         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 576                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 577                         os_memcpy(key_str, cred->key, cred->key_len);
 578                         key_str[cred->key_len] = '\0';
 579                 }
 580         }
 581
 582         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 583         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 584         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 585                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 586                      "key=%s",
 587                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 588                      cred->auth_type, cred->encr_type, key_str);
 589 }
 590
 591
 592 static void wpa_supplicant_wps_event_er_set_sel_reg(
 593         struct wpa_supplicant *wpa_s,
 594         struct wps_event_er_set_selected_registrar *ev)
 595 {
 596         char uuid_str[100];
 597
 598         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 599         switch (ev->state) {
 600         case WPS_ER_SET_SEL_REG_START:
 601                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 602                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 603                         "sel_reg_config_methods=0x%x",
 604                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 605                         ev->sel_reg_config_methods);
 606                 break;
 607         case WPS_ER_SET_SEL_REG_DONE:
 608                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 609                         "uuid=%s state=DONE", uuid_str);
 610                 break;
 611         case WPS_ER_SET_SEL_REG_FAILED:
 612                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 613                         "uuid=%s state=FAILED", uuid_str);
 614                 break;
 615         }
 616 }
 617
 618
 619 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 620                                      union wps_event_data *data)
 621 {
 622         struct wpa_supplicant *wpa_s = ctx;
 623         switch (event) {
 624         case WPS_EV_M2D:
 625                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 626                 break;
 627         case WPS_EV_FAIL:
 628                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 629                 break;
 630         case WPS_EV_SUCCESS:
 631                 wpa_supplicant_wps_event_success(wpa_s);
 632                 break;
 633         case WPS_EV_PWD_AUTH_FAIL:
 634 #ifdef CONFIG_AP
 635                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 636                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 637 #endif /* CONFIG_AP */
 638                 break;
 639         case WPS_EV_PBC_OVERLAP:
 640                 break;
 641         case WPS_EV_PBC_TIMEOUT:
 642                 break;
 643         case WPS_EV_ER_AP_ADD:
 644                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 645                 break;
 646         case WPS_EV_ER_AP_REMOVE:
 647                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 648                 break;
 649         case WPS_EV_ER_ENROLLEE_ADD:
 650                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 651                                                          &data->enrollee);
 652                 break;
 653         case WPS_EV_ER_ENROLLEE_REMOVE:
 654                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 655                                                             &data->enrollee);
 656                 break;
 657         case WPS_EV_ER_AP_SETTINGS:
 658                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 659                                                         &data->ap_settings);
 660                 break;
 661         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 662                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 663                                                         &data->set_sel_reg);
 664                 break;
 665         case WPS_EV_AP_PIN_SUCCESS:
 666                 break;
 667         }
 668 }
 669
 670
 671 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 672 {
 673         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 674             eap_is_wps_pin_enrollee(&ssid->eap))
 675                 return WPS_REQ_ENROLLEE;
 676         else
 677                 return WPS_REQ_REGISTRAR;
 678 }
 679
 680
 681 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 682 {
 683         int id;
 684         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 685
 686         prev_current = wpa_s->current_ssid;
 687
 688         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 689
 690         /* Remove any existing WPS network from configuration */
 691         ssid = wpa_s->conf->ssid;
 692         while (ssid) {
 693                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 694                         if (ssid == wpa_s->current_ssid) {
 695                                 wpa_s->current_ssid = NULL;
 696                                 if (ssid != NULL)
 697                                         wpas_notify_network_changed(wpa_s);
 698                         }
 699                         id = ssid->id;
 700                         remove_ssid = ssid;
 701                 } else
 702                         id = -1;
 703                 ssid = ssid->next;
 704                 if (id >= 0) {
 705                         if (prev_current == remove_ssid) {
 706                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 707                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 708                                                        NULL);
 709                         }
 710                         wpas_notify_network_removed(wpa_s, remove_ssid);
 711                         wpa_config_remove_network(wpa_s->conf, id);
 712                 }
 713         }
 714 }
 715
 716
 717 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 718 {
 719         struct wpa_supplicant *wpa_s = eloop_ctx;
 720         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 721                 "out");
 722         wpas_clear_wps(wpa_s);
 723 }
 724
 725
 726 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 727                                               int registrar, const u8 *bssid)
 728 {
 729         struct wpa_ssid *ssid;
 730
 731         ssid = wpa_config_add_network(wpa_s->conf);
 732         if (ssid == NULL)
 733                 return NULL;
 734         wpas_notify_network_added(wpa_s, ssid);
 735         wpa_config_set_network_defaults(ssid);
 736         ssid->temporary = 1;
 737         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 738             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 739             wpa_config_set(ssid, "identity", registrar ?
 740                            "\"" WSC_ID_REGISTRAR "\"" :
 741                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 742                 wpas_notify_network_removed(wpa_s, ssid);
 743                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 744                 return NULL;
 745         }
 746
 747         if (bssid) {
 748 #ifndef CONFIG_P2P
 749                 struct wpa_bss *bss;
 750                 int count = 0;
 751 #endif /* CONFIG_P2P */
 752
 753                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 754                 ssid->bssid_set = 1;
 755
 756                 /*
 757                  * Note: With P2P, the SSID may change at the time the WPS
 758                  * provisioning is started, so better not filter the AP based
 759                  * on the current SSID in the scan results.
 760                  */
 761 #ifndef CONFIG_P2P
 762                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 763                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 764                                 continue;
 765
 766                         os_free(ssid->ssid);
 767                         ssid->ssid = os_malloc(bss->ssid_len);
 768                         if (ssid->ssid == NULL)
 769                                 break;
 770                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 771                         ssid->ssid_len = bss->ssid_len;
 772                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 773                                           "scan results",
 774                                           ssid->ssid, ssid->ssid_len);
 775                         count++;
 776                 }
 777
 778                 if (count > 1) {
 779                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 780                                    "for the AP; use wildcard");
 781                         os_free(ssid->ssid);
 782                         ssid->ssid = NULL;
 783                         ssid->ssid_len = 0;
 784                 }
 785 #endif /* CONFIG_P2P */
 786         }
 787
 788         return ssid;
 789 }
 790
 791
 792 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 793                              struct wpa_ssid *selected, const u8 *bssid)
 794 {
 795         struct wpa_ssid *ssid;
 796         struct wpa_bss *bss;
 797
 798         wpa_s->known_wps_freq = 0;
 799         if (bssid) {
 800                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 801                 if (bss && bss->freq > 0) {
 802                         wpa_s->known_wps_freq = 1;
 803                         wpa_s->wps_freq = bss->freq;
 804                 }
 805         }
 806
 807         if (wpa_s->current_ssid)
 808                 wpa_supplicant_deauthenticate(
 809                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 810
 811         /* Mark all other networks disabled and trigger reassociation */
 812         ssid = wpa_s->conf->ssid;
 813         while (ssid) {
 814                 int was_disabled = ssid->disabled;
 815                 /*
 816                  * In case the network object corresponds to a persistent group
 817                  * then do not send out network disabled signal. In addition,
 818                  * do not change disabled status of persistent network objects
 819                  * from 2 to 1 should we connect to another network.
 820                  */
 821                 if (was_disabled != 2) {
 822                         ssid->disabled = ssid != selected;
 823                         if (was_disabled != ssid->disabled)
 824                                 wpas_notify_network_enabled_changed(wpa_s,
 825                                                                     ssid);
 826                 }
 827                 ssid = ssid->next;
 828         }
 829         wpa_s->disconnected = 0;
 830         wpa_s->reassociate = 1;
 831         wpa_s->scan_runs = 0;
 832         wpa_s->normal_scans = 0;
 833         wpa_s->wps_success = 0;
 834         wpa_s->blacklist_cleared = 0;
 835         wpa_supplicant_req_scan(wpa_s, 0, 0);
 836 }
 837
 838
 839 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 840                        int p2p_group)
 841 {
 842         struct wpa_ssid *ssid;
 843         wpas_clear_wps(wpa_s);
 844         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 845         if (ssid == NULL)
 846                 return -1;
 847         ssid->temporary = 1;
 848         ssid->p2p_group = p2p_group;
 849 #ifdef CONFIG_P2P
 850         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 851                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 852                 if (ssid->ssid) {
 853                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 854                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 855                                   ssid->ssid_len);
 856                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 857                                           "SSID", ssid->ssid, ssid->ssid_len);
 858                 }
 859         }
 860 #endif /* CONFIG_P2P */
 861         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 862         if (wpa_s->wps_fragment_size)
 863                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 864         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 865                                wpa_s, NULL);
 866         wpas_wps_reassoc(wpa_s, ssid, bssid);
 867         return 0;
 868 }
 869
 870
 871 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 872                        const char *pin, int p2p_group, u16 dev_pw_id)
 873 {
 874         struct wpa_ssid *ssid;
 875         char val[128];
 876         unsigned int rpin = 0;
 877
 878         wpas_clear_wps(wpa_s);
 879         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 880         if (ssid == NULL)
 881                 return -1;
 882         ssid->temporary = 1;
 883         ssid->p2p_group = p2p_group;
 884 #ifdef CONFIG_P2P
 885         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 886                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 887                 if (ssid->ssid) {
 888                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 889                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 890                                   ssid->ssid_len);
 891                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 892                                           "SSID", ssid->ssid, ssid->ssid_len);
 893                 }
 894         }
 895 #endif /* CONFIG_P2P */
 896         if (pin)
 897                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 898                             pin, dev_pw_id);
 899         else {
 900                 rpin = wps_generate_pin();
 901                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 902                             rpin, dev_pw_id);
 903         }
 904         wpa_config_set(ssid, "phase1", val, 0);
 905         if (wpa_s->wps_fragment_size)
 906                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 907         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 908                                wpa_s, NULL);
 909         wpas_wps_reassoc(wpa_s, ssid, bssid);
 910         return rpin;
 911 }
 912
 913
 914 /* Cancel the wps pbc/pin requests */
 915 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 916 {
 917 #ifdef CONFIG_AP
 918         if (wpa_s->ap_iface) {
 919                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 920                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 921         }
 922 #endif /* CONFIG_AP */
 923
 924         if (wpa_s->wpa_state == WPA_SCANNING ||
 925             wpa_s->wpa_state == WPA_DISCONNECTED) {
 926                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 927                 wpa_supplicant_cancel_scan(wpa_s);
 928                 wpas_clear_wps(wpa_s);
 929         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 930                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 931                            "deauthenticate");
 932                 wpa_supplicant_deauthenticate(wpa_s,
 933                                               WLAN_REASON_DEAUTH_LEAVING);
 934                 wpas_clear_wps(wpa_s);
 935         }
 936
 937         return 0;
 938 }
 939
 940
 941 #ifdef CONFIG_WPS_OOB
 942 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 943                        char *path, char *method, char *name)
 944 {
 945         struct wps_context *wps = wpa_s->wps;
 946         struct oob_device_data *oob_dev;
 947
 948         oob_dev = wps_get_oob_device(device_type);
 949         if (oob_dev == NULL)
 950                 return -1;
 951         oob_dev->device_path = path;
 952         oob_dev->device_name = name;
 953         wps->oob_conf.oob_method = wps_get_oob_method(method);
 954
 955         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 956                 /*
 957                  * Use pre-configured DH keys in order to be able to write the
 958                  * key hash into the OOB file.
 959                  */
 960                 wpabuf_free(wps->dh_pubkey);
 961                 wpabuf_free(wps->dh_privkey);
 962                 wps->dh_privkey = NULL;
 963                 wps->dh_pubkey = NULL;
 964                 dh5_free(wps->dh_ctx);
 965                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 966                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 967                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 968                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 969                                    "Diffie-Hellman handshake");
 970                         return -1;
 971                 }
 972         }
 973
 974         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 975                 wpas_clear_wps(wpa_s);
 976
 977         if (wps_process_oob(wps, oob_dev, 0) < 0)
 978                 return -1;
 979
 980         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 981              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 982             wpas_wps_start_pin(wpa_s, NULL,
 983                                wpabuf_head(wps->oob_conf.dev_password), 0,
 984                                DEV_PW_DEFAULT) < 0)
 985                         return -1;
 986
 987         return 0;
 988 }
 989 #endif /* CONFIG_WPS_OOB */
 990
 991
 992 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 993                        const char *pin, struct wps_new_ap_settings *settings)
 994 {
 995         struct wpa_ssid *ssid;
 996         char val[200];
 997         char *pos, *end;
 998         int res;
 999
1000         if (!pin)
1001                 return -1;
1002         wpas_clear_wps(wpa_s);
1003         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1004         if (ssid == NULL)
1005                 return -1;
1006         ssid->temporary = 1;
1007         pos = val;
1008         end = pos + sizeof(val);
1009         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1010         if (res < 0 || res >= end - pos)
1011                 return -1;
1012         pos += res;
1013         if (settings) {
1014                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1015                                   "new_encr=%s new_key=%s",
1016                                   settings->ssid_hex, settings->auth,
1017                                   settings->encr, settings->key_hex);
1018                 if (res < 0 || res >= end - pos)
1019                         return -1;
1020                 pos += res;
1021         }
1022         res = os_snprintf(pos, end - pos, "\"");
1023         if (res < 0 || res >= end - pos)
1024                 return -1;
1025         wpa_config_set(ssid, "phase1", val, 0);
1026         if (wpa_s->wps_fragment_size)
1027                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1028         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1029                                wpa_s, NULL);
1030         wpas_wps_reassoc(wpa_s, ssid, bssid);
1031         return 0;
1032 }
1033
1034
1035 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1036                                size_t psk_len)
1037 {
1038         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1039                    "STA " MACSTR, MAC2STR(mac_addr));
1040         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1041
1042         /* TODO */
1043
1044         return 0;
1045 }
1046
1047
1048 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1049                                    const struct wps_device_data *dev)
1050 {
1051         char uuid[40], txt[400];
1052         int len;
1053         char devtype[WPS_DEV_TYPE_BUFSIZE];
1054         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1055                 return;
1056         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1057         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1058                           " [%s|%s|%s|%s|%s|%s]",
1059                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1060                           dev->manufacturer, dev->model_name,
1061                           dev->model_number, dev->serial_number,
1062                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1063                                                sizeof(devtype)));
1064         if (len > 0 && len < (int) sizeof(txt))
1065                 wpa_printf(MSG_INFO, "%s", txt);
1066 }
1067
1068
1069 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1070                                     u16 sel_reg_config_methods)
1071 {
1072 #ifdef CONFIG_WPS_ER
1073         struct wpa_supplicant *wpa_s = ctx;
1074
1075         if (wpa_s->wps_er == NULL)
1076                 return;
1077         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1078                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1079                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1080         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1081                            sel_reg_config_methods);
1082 #endif /* CONFIG_WPS_ER */
1083 }
1084
1085
1086 static u16 wps_fix_config_methods(u16 config_methods)
1087 {
1088 #ifdef CONFIG_WPS2
1089         if ((config_methods &
1090              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1091               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1092                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1093                            "virtual_display for WPS 2.0 compliance");
1094                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1095         }
1096         if ((config_methods &
1097              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1098               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1099                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1100                            "virtual_push_button for WPS 2.0 compliance");
1101                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1102         }
1103 #endif /* CONFIG_WPS2 */
1104
1105         return config_methods;
1106 }
1107
1108
1109 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1110                               struct wps_context *wps)
1111 {
1112         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1113         if (is_nil_uuid(wpa_s->conf->uuid)) {
1114                 struct wpa_supplicant *first;
1115                 first = wpa_s->global->ifaces;
1116                 while (first && first->next)
1117                         first = first->next;
1118                 if (first && first != wpa_s) {
1119                         if (wps != wpa_s->global->ifaces->wps)
1120                                 os_memcpy(wps->uuid,
1121                                           wpa_s->global->ifaces->wps->uuid,
1122                                           WPS_UUID_LEN);
1123                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1124                                     "interface", wps->uuid, WPS_UUID_LEN);
1125                 } else {
1126                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1127                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1128                                     "address", wps->uuid, WPS_UUID_LEN);
1129                 }
1130         } else {
1131                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1132                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1133                             wps->uuid, WPS_UUID_LEN);
1134         }
1135 }
1136
1137
1138 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1139                                        struct wps_context *wps)
1140 {
1141         wpabuf_free(wps->dev.vendor_ext_m1);
1142         wps->dev.vendor_ext_m1 = NULL;
1143
1144         if (wpa_s->conf->wps_vendor_ext_m1) {
1145                 wps->dev.vendor_ext_m1 =
1146                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1147                 if (!wps->dev.vendor_ext_m1) {
1148                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1149                                    "allocate memory for vendor_ext_m1");
1150                 }
1151         }
1152 }
1153
1154
1155 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1156 {
1157         struct wps_context *wps;
1158         struct wps_registrar_config rcfg;
1159         struct hostapd_hw_modes *modes;
1160         u16 m;
1161
1162         wps = os_zalloc(sizeof(*wps));
1163         if (wps == NULL)
1164                 return -1;
1165
1166         wps->cred_cb = wpa_supplicant_wps_cred;
1167         wps->event_cb = wpa_supplicant_wps_event;
1168         wps->cb_ctx = wpa_s;
1169
1170         wps->dev.device_name = wpa_s->conf->device_name;
1171         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1172         wps->dev.model_name = wpa_s->conf->model_name;
1173         wps->dev.model_number = wpa_s->conf->model_number;
1174         wps->dev.serial_number = wpa_s->conf->serial_number;
1175         wps->config_methods =
1176                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1177         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1178             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1179                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1180                            "methods are not allowed at the same time");
1181                 os_free(wps);
1182                 return -1;
1183         }
1184         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1185         wps->dev.config_methods = wps->config_methods;
1186         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1187                   WPS_DEV_TYPE_LEN);
1188
1189         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1190         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1191                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1192
1193         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1194
1195         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1196         modes = wpa_s->hw.modes;
1197         if (modes) {
1198                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1199                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1200                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1201                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1202                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1203                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1204                 }
1205         }
1206         if (wps->dev.rf_bands == 0) {
1207                 /*
1208                  * Default to claiming support for both bands if the driver
1209                  * does not provide support for fetching supported bands.
1210                  */
1211                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1212         }
1213         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1214         wpas_wps_set_uuid(wpa_s, wps);
1215
1216         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1217         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1218
1219         os_memset(&rcfg, 0, sizeof(rcfg));
1220         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1221         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1222         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1223         rcfg.cb_ctx = wpa_s;
1224
1225         wps->registrar = wps_registrar_init(wps, &rcfg);
1226         if (wps->registrar == NULL) {
1227                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1228                 os_free(wps);
1229                 return -1;
1230         }
1231
1232         wpa_s->wps = wps;
1233
1234         return 0;
1235 }
1236
1237
1238 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1239 {
1240         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1241
1242         if (wpa_s->wps == NULL)
1243                 return;
1244
1245 #ifdef CONFIG_WPS_ER
1246         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1247         wpa_s->wps_er = NULL;
1248 #endif /* CONFIG_WPS_ER */
1249
1250         wps_registrar_deinit(wpa_s->wps->registrar);
1251         wpabuf_free(wpa_s->wps->dh_pubkey);
1252         wpabuf_free(wpa_s->wps->dh_privkey);
1253         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1254         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1255         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1256         os_free(wpa_s->wps->network_key);
1257         os_free(wpa_s->wps);
1258         wpa_s->wps = NULL;
1259 }
1260
1261
1262 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1263                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1264 {
1265         struct wpabuf *wps_ie;
1266
1267         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1268                 return -1;
1269
1270         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1271         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1272                 if (!wps_ie) {
1273                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1274                         return 0;
1275                 }
1276
1277                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1278                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1279                                    "without active PBC Registrar");
1280                         wpabuf_free(wps_ie);
1281                         return 0;
1282                 }
1283
1284                 /* TODO: overlap detection */
1285                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1286                            "(Active PBC)");
1287                 wpabuf_free(wps_ie);
1288                 return 1;
1289         }
1290
1291         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1292                 if (!wps_ie) {
1293                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1294                         return 0;
1295                 }
1296
1297                 /*
1298                  * Start with WPS APs that advertise our address as an
1299                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1300                  * allow any WPS AP after couple of scans since some APs do not
1301                  * set Selected Registrar attribute properly when using
1302                  * external Registrar.
1303                  */
1304                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1305                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1306                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1307                                            "without active PIN Registrar");
1308                                 wpabuf_free(wps_ie);
1309                                 return 0;
1310                         }
1311                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1312                 } else {
1313                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1314                                    "(Authorized MAC or Active PIN)");
1315                 }
1316                 wpabuf_free(wps_ie);
1317                 return 1;
1318         }
1319
1320         if (wps_ie) {
1321                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1322                 wpabuf_free(wps_ie);
1323                 return 1;
1324         }
1325
1326         return -1;
1327 }
1328
1329
1330 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1331                               struct wpa_ssid *ssid,
1332                               struct wpa_scan_res *bss)
1333 {
1334         struct wpabuf *wps_ie = NULL;
1335         int ret = 0;
1336
1337         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1338                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1339                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1340                         /* allow wildcard SSID for WPS PBC */
1341                         ret = 1;
1342                 }
1343         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1344                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1345                 if (wps_ie &&
1346                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1347                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1348                         /* allow wildcard SSID for WPS PIN */
1349                         ret = 1;
1350                 }
1351         }
1352
1353         if (!ret && ssid->bssid_set &&
1354             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1355                 /* allow wildcard SSID due to hardcoded BSSID match */
1356                 ret = 1;
1357         }
1358
1359 #ifdef CONFIG_WPS_STRICT
1360         if (wps_ie) {
1361                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1362                                                    0, bss->bssid) < 0)
1363                         ret = 0;
1364                 if (bss->beacon_ie_len) {
1365                         struct wpabuf *bcn_wps;
1366                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1367                                 bss, WPS_IE_VENDOR_TYPE);
1368                         if (bcn_wps == NULL) {
1369                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1370                                            "missing from AP Beacon");
1371                                 ret = 0;
1372                         } else {
1373                                 if (wps_validate_beacon(wps_ie) < 0)
1374                                         ret = 0;
1375                                 wpabuf_free(bcn_wps);
1376                         }
1377                 }
1378         }
1379 #endif /* CONFIG_WPS_STRICT */
1380
1381         wpabuf_free(wps_ie);
1382
1383         return ret;
1384 }
1385
1386
1387 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1388                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1389 {
1390         const u8 *sel_uuid, *uuid;
1391         struct wpabuf *wps_ie;
1392         int ret = 0;
1393         struct wpa_bss *bss;
1394
1395         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1396                 return 0;
1397
1398         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1399                    "present in scan results; selected BSSID " MACSTR,
1400                    MAC2STR(selected->bssid));
1401
1402         /* Make sure that only one AP is in active PBC mode */
1403         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1404         if (wps_ie) {
1405                 sel_uuid = wps_get_uuid_e(wps_ie);
1406                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1407                             sel_uuid, UUID_LEN);
1408         } else {
1409                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1410                            "WPS IE?!");
1411                 sel_uuid = NULL;
1412         }
1413
1414         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1415                 struct wpabuf *ie;
1416                 if (bss == selected)
1417                         continue;
1418                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1419                 if (!ie)
1420                         continue;
1421                 if (!wps_is_selected_pbc_registrar(ie)) {
1422                         wpabuf_free(ie);
1423                         continue;
1424                 }
1425                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1426                            MACSTR, MAC2STR(bss->bssid));
1427                 uuid = wps_get_uuid_e(ie);
1428                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1429                             uuid, UUID_LEN);
1430                 if (sel_uuid == NULL || uuid == NULL ||
1431                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1432                         ret = 1; /* PBC overlap */
1433                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1434                                 MACSTR " and " MACSTR,
1435                                 MAC2STR(selected->bssid),
1436                                 MAC2STR(bss->bssid));
1437                         wpabuf_free(ie);
1438                         break;
1439                 }
1440
1441                 /* TODO: verify that this is reasonable dual-band situation */
1442
1443                 wpabuf_free(ie);
1444         }
1445
1446         wpabuf_free(wps_ie);
1447
1448         return ret;
1449 }
1450
1451
1452 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1453 {
1454         struct wpa_bss *bss;
1455         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1456
1457         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1458                 return;
1459
1460         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1461                 struct wpabuf *ie;
1462                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1463                 if (!ie)
1464                         continue;
1465                 if (wps_is_selected_pbc_registrar(ie))
1466                         pbc++;
1467                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1468                         auth++;
1469                 else if (wps_is_selected_pin_registrar(ie))
1470                         pin++;
1471                 else
1472                         wps++;
1473                 wpabuf_free(ie);
1474         }
1475
1476         if (pbc)
1477                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1478         else if (auth)
1479                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1480         else if (pin)
1481                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1482         else if (wps)
1483                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1484 }
1485
1486
1487 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1488 {
1489         struct wpa_ssid *ssid;
1490
1491         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1492                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1493                         return 1;
1494         }
1495
1496         return 0;
1497 }
1498
1499
1500 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1501                               char *end)
1502 {
1503         struct wpabuf *wps_ie;
1504         int ret;
1505
1506         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1507         if (wps_ie == NULL)
1508                 return 0;
1509
1510         ret = wps_attr_text(wps_ie, buf, end);
1511         wpabuf_free(wps_ie);
1512         return ret;
1513 }
1514
1515
1516 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1517 {
1518 #ifdef CONFIG_WPS_ER
1519         if (wpa_s->wps_er) {
1520                 wps_er_refresh(wpa_s->wps_er);
1521                 return 0;
1522         }
1523         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1524         if (wpa_s->wps_er == NULL)
1525                 return -1;
1526         return 0;
1527 #else /* CONFIG_WPS_ER */
1528         return 0;
1529 #endif /* CONFIG_WPS_ER */
1530 }
1531
1532
1533 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1534 {
1535 #ifdef CONFIG_WPS_ER
1536         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1537         wpa_s->wps_er = NULL;
1538 #endif /* CONFIG_WPS_ER */
1539         return 0;
1540 }
1541
1542
1543 #ifdef CONFIG_WPS_ER
1544 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1545                         const char *uuid, const char *pin)
1546 {
1547         u8 u[UUID_LEN];
1548         int any = 0;
1549
1550         if (os_strcmp(uuid, "any") == 0)
1551                 any = 1;
1552         else if (uuid_str2bin(uuid, u))
1553                 return -1;
1554         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1555                                      any ? NULL : u,
1556                                      (const u8 *) pin, os_strlen(pin), 300);
1557 }
1558
1559
1560 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1561 {
1562         u8 u[UUID_LEN];
1563
1564         if (uuid_str2bin(uuid, u))
1565                 return -1;
1566         return wps_er_pbc(wpa_s->wps_er, u);
1567 }
1568
1569
1570 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1571                       const char *pin)
1572 {
1573         u8 u[UUID_LEN];
1574
1575         if (uuid_str2bin(uuid, u))
1576                 return -1;
1577         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1578                             os_strlen(pin));
1579 }
1580
1581
1582 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1583                            int id)
1584 {
1585         u8 u[UUID_LEN];
1586         struct wpa_ssid *ssid;
1587         struct wps_credential cred;
1588
1589         if (uuid_str2bin(uuid, u))
1590                 return -1;
1591         ssid = wpa_config_get_network(wpa_s->conf, id);
1592         if (ssid == NULL || ssid->ssid == NULL)
1593                 return -1;
1594
1595         os_memset(&cred, 0, sizeof(cred));
1596         if (ssid->ssid_len > 32)
1597                 return -1;
1598         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1599         cred.ssid_len = ssid->ssid_len;
1600         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1601                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1602                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1603                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1604                         cred.encr_type = WPS_ENCR_AES;
1605                 else
1606                         cred.encr_type = WPS_ENCR_TKIP;
1607                 if (ssid->passphrase) {
1608                         cred.key_len = os_strlen(ssid->passphrase);
1609                         if (cred.key_len >= 64)
1610                                 return -1;
1611                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1612                 } else if (ssid->psk_set) {
1613                         cred.key_len = 32;
1614                         os_memcpy(cred.key, ssid->psk, 32);
1615                 } else
1616                         return -1;
1617         } else {
1618                 cred.auth_type = WPS_AUTH_OPEN;
1619                 cred.encr_type = WPS_ENCR_NONE;
1620         }
1621         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1622 }
1623
1624
1625 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1626                        const char *pin, struct wps_new_ap_settings *settings)
1627 {
1628         u8 u[UUID_LEN];
1629         struct wps_credential cred;
1630         size_t len;
1631
1632         if (uuid_str2bin(uuid, u))
1633                 return -1;
1634         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1635             settings->encr == NULL || settings->key_hex == NULL)
1636                 return -1;
1637
1638         os_memset(&cred, 0, sizeof(cred));
1639         len = os_strlen(settings->ssid_hex);
1640         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1641             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1642                 return -1;
1643         cred.ssid_len = len / 2;
1644
1645         len = os_strlen(settings->key_hex);
1646         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1647             hexstr2bin(settings->key_hex, cred.key, len / 2))
1648                 return -1;
1649         cred.key_len = len / 2;
1650
1651         if (os_strcmp(settings->auth, "OPEN") == 0)
1652                 cred.auth_type = WPS_AUTH_OPEN;
1653         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1654                 cred.auth_type = WPS_AUTH_WPAPSK;
1655         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1656                 cred.auth_type = WPS_AUTH_WPA2PSK;
1657         else
1658                 return -1;
1659
1660         if (os_strcmp(settings->encr, "NONE") == 0)
1661                 cred.encr_type = WPS_ENCR_NONE;
1662         else if (os_strcmp(settings->encr, "WEP") == 0)
1663                 cred.encr_type = WPS_ENCR_WEP;
1664         else if (os_strcmp(settings->encr, "TKIP") == 0)
1665                 cred.encr_type = WPS_ENCR_TKIP;
1666         else if (os_strcmp(settings->encr, "CCMP") == 0)
1667                 cred.encr_type = WPS_ENCR_AES;
1668         else
1669                 return -1;
1670
1671         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1672                              os_strlen(pin), &cred);
1673 }
1674
1675
1676 static int callbacks_pending = 0;
1677
1678 static void wpas_wps_terminate_cb(void *ctx)
1679 {
1680         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1681         if (--callbacks_pending <= 0)
1682                 eloop_terminate();
1683 }
1684 #endif /* CONFIG_WPS_ER */
1685
1686
1687 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1688 {
1689 #ifdef CONFIG_WPS_ER
1690         if (wpa_s->wps_er) {
1691                 callbacks_pending++;
1692                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1693                 wpa_s->wps_er = NULL;
1694                 return 1;
1695         }
1696 #endif /* CONFIG_WPS_ER */
1697         return 0;
1698 }
1699
1700
1701 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1702 {
1703         struct wpa_ssid *ssid;
1704
1705         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1706                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1707                         return 1;
1708         }
1709
1710         return 0;
1711 }
1712
1713
1714 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1715 {
1716         struct wps_context *wps = wpa_s->wps;
1717
1718         if (wps == NULL)
1719                 return;
1720
1721         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1722                 wps->config_methods = wps_config_methods_str2bin(
1723                         wpa_s->conf->config_methods);
1724                 if ((wps->config_methods &
1725                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1726                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1727                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1728                                    "config methods are not allowed at the "
1729                                    "same time");
1730                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1731                 }
1732         }
1733         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1734
1735         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1736                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1737                           WPS_DEV_TYPE_LEN);
1738
1739         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1740                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1741                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1742                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1743         }
1744
1745         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1746                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1747
1748         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1749                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1750
1751         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1752                 wpas_wps_set_uuid(wpa_s, wps);
1753
1754         if (wpa_s->conf->changed_parameters &
1755             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1756                 /* Update pointers to make sure they refer current values */
1757                 wps->dev.device_name = wpa_s->conf->device_name;
1758                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1759                 wps->dev.model_name = wpa_s->conf->model_name;
1760                 wps->dev.model_number = wpa_s->conf->model_number;
1761                 wps->dev.serial_number = wpa_s->conf->serial_number;
1762         }
1763 }
1764
1765
1766 #ifdef CONFIG_WPS_NFC
1767
1768 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1769 {
1770         struct wpabuf *priv = NULL, *pub = NULL, *pw;
1771         void *dh_ctx;
1772         struct wpabuf *ret;
1773
1774         pw = wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN);
1775         if (pw == NULL)
1776                 return NULL;
1777
1778         if (random_get_bytes(wpabuf_put(pw, WPS_OOB_DEVICE_PASSWORD_LEN),
1779                              WPS_OOB_DEVICE_PASSWORD_LEN)) {
1780                 wpabuf_free(pw);
1781                 return NULL;
1782         }
1783
1784         dh_ctx = dh5_init(&priv, &pub);
1785         if (dh_ctx == NULL) {
1786                 wpabuf_free(pw);
1787                 return NULL;
1788         }
1789         dh5_free(dh_ctx);
1790
1791         wpa_s->conf->wps_nfc_dev_pw_id = 0x10 + os_random() % 0xfff0;
1792         wpabuf_free(wpa_s->conf->wps_nfc_dh_pubkey);
1793         wpa_s->conf->wps_nfc_dh_pubkey = pub;
1794         wpabuf_free(wpa_s->conf->wps_nfc_dh_privkey);
1795         wpa_s->conf->wps_nfc_dh_privkey = priv;
1796         wpabuf_free(wpa_s->conf->wps_nfc_dev_pw);
1797         wpa_s->conf->wps_nfc_dev_pw = pw;
1798
1799         ret = wps_build_nfc_pw_token(wpa_s->conf->wps_nfc_dev_pw_id,
1800                                      wpa_s->conf->wps_nfc_dh_pubkey,
1801                                      wpa_s->conf->wps_nfc_dev_pw);
1802         if (ndef && ret) {
1803                 struct wpabuf *tmp;
1804                 tmp = ndef_build_wifi(ret);
1805                 wpabuf_free(ret);
1806                 if (tmp == NULL)
1807                         return NULL;
1808                 ret = tmp;
1809         }
1810
1811         return ret;
1812 }
1813
1814
1815 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1816 {
1817         struct wps_context *wps = wpa_s->wps;
1818         char pw[32 * 2 + 1];
1819
1820         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1821             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1822             wpa_s->conf->wps_nfc_dev_pw == NULL)
1823                 return -1;
1824
1825         dh5_free(wps->dh_ctx);
1826         wpabuf_free(wps->dh_pubkey);
1827         wpabuf_free(wps->dh_privkey);
1828         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1829         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1830         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1831                 wps->dh_ctx = NULL;
1832                 wpabuf_free(wps->dh_pubkey);
1833                 wps->dh_pubkey = NULL;
1834                 wpabuf_free(wps->dh_privkey);
1835                 wps->dh_privkey = NULL;
1836                 return -1;
1837         }
1838         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1839         if (wps->dh_ctx == NULL)
1840                 return -1;
1841
1842         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1843                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1844                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1845         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1846                                   wpa_s->conf->wps_nfc_dev_pw_id);
1847 }
1848
1849 #endif /* CONFIG_WPS_NFC */