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 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  47 {
  48         if (!wpa_s->wps_success &&
  49             wpa_s->current_ssid &&
  50             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  51                 const u8 *bssid = wpa_s->bssid;
  52                 if (is_zero_ether_addr(bssid))
  53                         bssid = wpa_s->pending_bssid;
  54
  55                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  56                            " did not succeed - continue trying to find "
  57                            "suitable AP", MAC2STR(bssid));
  58                 wpa_blacklist_add(wpa_s, bssid);
  59
  60                 wpa_supplicant_deauthenticate(wpa_s,
  61                                               WLAN_REASON_DEAUTH_LEAVING);
  62                 wpa_s->reassociate = 1;
  63                 wpa_supplicant_req_scan(wpa_s,
  64                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  65                 wpa_s->blacklist_cleared = 0;
  66                 return 1;
  67         }
  68
  69         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  70         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  71                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  72
  73         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  74             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  75                 int disabled = wpa_s->current_ssid->disabled;
  76                 unsigned int freq = wpa_s->assoc_freq;
  77                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  78                            "try to associate with the received credential "
  79                            "(freq=%u)", freq);
  80                 wpa_supplicant_deauthenticate(wpa_s,
  81                                               WLAN_REASON_DEAUTH_LEAVING);
  82                 if (disabled) {
  83                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  84                                    "disabled - wait for user to enable");
  85                         return 1;
  86                 }
  87                 wpa_s->after_wps = 5;
  88                 wpa_s->wps_freq = freq;
  89                 wpa_s->normal_scans = 0;
  90                 wpa_s->reassociate = 1;
  91                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  92                 return 1;
  93         }
  94
  95         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  96                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  97                            "for external credential processing");
  98                 wpas_clear_wps(wpa_s);
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 return 1;
 102         }
 103
 104         return 0;
 105 }
 106
 107
 108 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 109                                          struct wpa_ssid *ssid,
 110                                          const struct wps_credential *cred)
 111 {
 112         struct wpa_driver_capa capa;
 113         struct wpa_bss *bss;
 114         const u8 *ie;
 115         struct wpa_ie_data adv;
 116         int wpa2 = 0, ccmp = 0;
 117
 118         /*
 119          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 120          * case they are configured for mixed mode operation (WPA+WPA2 and
 121          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 122          * actually supports stronger security and select that if the client
 123          * has support for it, too.
 124          */
 125
 126         if (wpa_drv_get_capa(wpa_s, &capa))
 127                 return; /* Unknown what driver supports */
 128
 129         if (ssid->ssid == NULL)
 130                 return;
 131         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 132         if (bss == NULL) {
 133                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 134                            "table - use credential as-is");
 135                 return;
 136         }
 137
 138         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 139
 140         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 141         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 142                 wpa2 = 1;
 143                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 144                         ccmp = 1;
 145         } else {
 146                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 147                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 148                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 149                         ccmp = 1;
 150         }
 151
 152         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 153             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 154                 /*
 155                  * TODO: This could be the initial AP configuration and the
 156                  * Beacon contents could change shortly. Should request a new
 157                  * scan and delay addition of the network until the updated
 158                  * scan results are available.
 159                  */
 160                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 161                            "support - use credential as-is");
 162                 return;
 163         }
 164
 165         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 166             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 167             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 168                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 169                            "based on scan results");
 170                 if (wpa_s->conf->ap_scan == 1)
 171                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 172                 else
 173                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 174         }
 175
 176         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 177             (ssid->proto & WPA_PROTO_WPA) &&
 178             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 179                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 180                            "based on scan results");
 181                 if (wpa_s->conf->ap_scan == 1)
 182                         ssid->proto |= WPA_PROTO_RSN;
 183                 else
 184                         ssid->proto = WPA_PROTO_RSN;
 185         }
 186 }
 187
 188
 189 static int wpa_supplicant_wps_cred(void *ctx,
 190                                    const struct wps_credential *cred)
 191 {
 192         struct wpa_supplicant *wpa_s = ctx;
 193         struct wpa_ssid *ssid = wpa_s->current_ssid;
 194         u8 key_idx = 0;
 195         u16 auth_type;
 196 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 197         int registrar = 0;
 198 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 199
 200         if ((wpa_s->conf->wps_cred_processing == 1 ||
 201              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 202                 size_t blen = cred->cred_attr_len * 2 + 1;
 203                 char *buf = os_malloc(blen);
 204                 if (buf) {
 205                         wpa_snprintf_hex(buf, blen,
 206                                          cred->cred_attr, cred->cred_attr_len);
 207                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 208                                 WPS_EVENT_CRED_RECEIVED, buf);
 209                         os_free(buf);
 210                 }
 211
 212                 wpas_notify_wps_credential(wpa_s, cred);
 213         } else
 214                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 215
 216         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 217                         cred->cred_attr, cred->cred_attr_len);
 218
 219         if (wpa_s->conf->wps_cred_processing == 1)
 220                 return 0;
 221
 222         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 223         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 224                    cred->auth_type);
 225         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 226         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 227         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 228                         cred->key, cred->key_len);
 229         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 230                    MAC2STR(cred->mac_addr));
 231
 232         auth_type = cred->auth_type;
 233         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 234                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 235                            "auth_type into WPA2PSK");
 236                 auth_type = WPS_AUTH_WPA2PSK;
 237         }
 238
 239         if (auth_type != WPS_AUTH_OPEN &&
 240             auth_type != WPS_AUTH_SHARED &&
 241             auth_type != WPS_AUTH_WPAPSK &&
 242             auth_type != WPS_AUTH_WPA2PSK) {
 243                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 244                            "unsupported authentication type 0x%x",
 245                            auth_type);
 246                 return 0;
 247         }
 248
 249         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 250                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 251                            "on the received credential");
 252 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 253                 if (ssid->eap.identity &&
 254                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 255                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 256                               WSC_ID_REGISTRAR_LEN) == 0)
 257                         registrar = 1;
 258 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 259                 os_free(ssid->eap.identity);
 260                 ssid->eap.identity = NULL;
 261                 ssid->eap.identity_len = 0;
 262                 os_free(ssid->eap.phase1);
 263                 ssid->eap.phase1 = NULL;
 264                 os_free(ssid->eap.eap_methods);
 265                 ssid->eap.eap_methods = NULL;
 266                 if (!ssid->p2p_group)
 267                         ssid->temporary = 0;
 268                 ssid->bssid_set = 0;
 269         } else {
 270                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 271                            "received credential");
 272                 ssid = wpa_config_add_network(wpa_s->conf);
 273                 if (ssid == NULL)
 274                         return -1;
 275                 wpas_notify_network_added(wpa_s, ssid);
 276         }
 277
 278         wpa_config_set_network_defaults(ssid);
 279
 280         os_free(ssid->ssid);
 281         ssid->ssid = os_malloc(cred->ssid_len);
 282         if (ssid->ssid) {
 283                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 284                 ssid->ssid_len = cred->ssid_len;
 285         }
 286
 287         switch (cred->encr_type) {
 288         case WPS_ENCR_NONE:
 289                 break;
 290         case WPS_ENCR_WEP:
 291                 if (cred->key_len <= 0)
 292                         break;
 293                 if (cred->key_len != 5 && cred->key_len != 13 &&
 294                     cred->key_len != 10 && cred->key_len != 26) {
 295                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 296                                    "%lu", (unsigned long) cred->key_len);
 297                         return -1;
 298                 }
 299                 if (cred->key_idx > NUM_WEP_KEYS) {
 300                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 301                                    cred->key_idx);
 302                         return -1;
 303                 }
 304                 if (cred->key_idx)
 305                         key_idx = cred->key_idx - 1;
 306                 if (cred->key_len == 10 || cred->key_len == 26) {
 307                         if (hexstr2bin((char *) cred->key,
 308                                        ssid->wep_key[key_idx],
 309                                        cred->key_len / 2) < 0) {
 310                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 311                                            "%d", key_idx);
 312                                 return -1;
 313                         }
 314                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 315                 } else {
 316                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 317                                   cred->key_len);
 318                         ssid->wep_key_len[key_idx] = cred->key_len;
 319                 }
 320                 ssid->wep_tx_keyidx = key_idx;
 321                 break;
 322         case WPS_ENCR_TKIP:
 323                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 324                 break;
 325         case WPS_ENCR_AES:
 326                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 327                 break;
 328         }
 329
 330         switch (auth_type) {
 331         case WPS_AUTH_OPEN:
 332                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 333                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 334                 ssid->proto = 0;
 335 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 336                 if (registrar) {
 337                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 338                                 "id=%d - Credentials for an open "
 339                                 "network disabled by default - use "
 340                                 "'select_network %d' to enable",
 341                                 ssid->id, ssid->id);
 342                         ssid->disabled = 1;
 343                 }
 344 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 345                 break;
 346         case WPS_AUTH_SHARED:
 347                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 348                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 349                 ssid->proto = 0;
 350                 break;
 351         case WPS_AUTH_WPAPSK:
 352                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 353                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 354                 ssid->proto = WPA_PROTO_WPA;
 355                 break;
 356         case WPS_AUTH_WPA:
 357                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 358                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 359                 ssid->proto = WPA_PROTO_WPA;
 360                 break;
 361         case WPS_AUTH_WPA2:
 362                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 363                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 364                 ssid->proto = WPA_PROTO_RSN;
 365                 break;
 366         case WPS_AUTH_WPA2PSK:
 367                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 368                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 369                 ssid->proto = WPA_PROTO_RSN;
 370                 break;
 371         }
 372
 373         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 374                 if (cred->key_len == 2 * PMK_LEN) {
 375                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 376                                        PMK_LEN)) {
 377                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 378                                            "Key");
 379                                 return -1;
 380                         }
 381                         ssid->psk_set = 1;
 382                         ssid->export_keys = 1;
 383                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 384                         os_free(ssid->passphrase);
 385                         ssid->passphrase = os_malloc(cred->key_len + 1);
 386                         if (ssid->passphrase == NULL)
 387                                 return -1;
 388                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 389                         ssid->passphrase[cred->key_len] = '\0';
 390                         wpa_config_update_psk(ssid);
 391                         ssid->export_keys = 1;
 392                 } else {
 393                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 394                                    "length %lu",
 395                                    (unsigned long) cred->key_len);
 396                         return -1;
 397                 }
 398         }
 399
 400         wpas_wps_security_workaround(wpa_s, ssid, cred);
 401
 402 #ifndef CONFIG_NO_CONFIG_WRITE
 403         if (wpa_s->conf->update_config &&
 404             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 405                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 406                 return -1;
 407         }
 408 #endif /* CONFIG_NO_CONFIG_WRITE */
 409
 410         return 0;
 411 }
 412
 413
 414 #ifdef CONFIG_P2P
 415 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 416 {
 417         struct wpa_supplicant *wpa_s = eloop_ctx;
 418         wpas_p2p_notif_pbc_overlap(wpa_s);
 419 }
 420 #endif /* CONFIG_P2P */
 421
 422
 423 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 424                                          struct wps_event_m2d *m2d)
 425 {
 426         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 427                 "dev_password_id=%d config_error=%d",
 428                 m2d->dev_password_id, m2d->config_error);
 429         wpas_notify_wps_event_m2d(wpa_s, m2d);
 430 #ifdef CONFIG_P2P
 431         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 432                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 433                         "dev_password_id=%d config_error=%d",
 434                         m2d->dev_password_id, m2d->config_error);
 435         }
 436         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 437                 /*
 438                  * Notify P2P from eloop timeout to avoid issues with the
 439                  * interface getting removed while processing a message.
 440                  */
 441                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 442                                        NULL);
 443         }
 444 #endif /* CONFIG_P2P */
 445 }
 446
 447
 448 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 449         "No Error", /* WPS_EI_NO_ERROR */
 450         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 451         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 452 };
 453
 454 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 455                                           struct wps_event_fail *fail)
 456 {
 457         if (fail->error_indication > 0 &&
 458             fail->error_indication < NUM_WPS_EI_VALUES) {
 459                 wpa_msg(wpa_s, MSG_INFO,
 460                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 461                         fail->msg, fail->config_error, fail->error_indication,
 462                         wps_event_fail_reason[fail->error_indication]);
 463                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 464                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 465                                 "msg=%d config_error=%d reason=%d (%s)",
 466                                 fail->msg, fail->config_error,
 467                                 fail->error_indication,
 468                                 wps_event_fail_reason[fail->error_indication]);
 469         } else {
 470                 wpa_msg(wpa_s, MSG_INFO,
 471                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 472                         fail->msg, fail->config_error);
 473                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 474                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 475                                 "msg=%d config_error=%d",
 476                                 fail->msg, fail->config_error);
 477         }
 478         wpas_clear_wps(wpa_s);
 479         wpas_notify_wps_event_fail(wpa_s, fail);
 480 #ifdef CONFIG_P2P
 481         wpas_p2p_wps_failed(wpa_s, fail);
 482 #endif /* CONFIG_P2P */
 483 }
 484
 485
 486 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 487 {
 488         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 489         wpa_s->wps_success = 1;
 490         wpas_notify_wps_event_success(wpa_s);
 491 #ifdef CONFIG_P2P
 492         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 493 #endif /* CONFIG_P2P */
 494 }
 495
 496
 497 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 498                                                struct wps_event_er_ap *ap)
 499 {
 500         char uuid_str[100];
 501         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 502
 503         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 504         if (ap->pri_dev_type)
 505                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 506                                      sizeof(dev_type));
 507         else
 508                 dev_type[0] = '\0';
 509
 510         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 511                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 512                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 513                 ap->friendly_name ? ap->friendly_name : "",
 514                 ap->manufacturer ? ap->manufacturer : "",
 515                 ap->model_description ? ap->model_description : "",
 516                 ap->model_name ? ap->model_name : "",
 517                 ap->manufacturer_url ? ap->manufacturer_url : "",
 518                 ap->model_url ? ap->model_url : "");
 519 }
 520
 521
 522 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 523                                                   struct wps_event_er_ap *ap)
 524 {
 525         char uuid_str[100];
 526         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 527         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 528 }
 529
 530
 531 static void wpa_supplicant_wps_event_er_enrollee_add(
 532         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 533 {
 534         char uuid_str[100];
 535         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 536
 537         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 538         if (enrollee->pri_dev_type)
 539                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 540                                      sizeof(dev_type));
 541         else
 542                 dev_type[0] = '\0';
 543
 544         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 545                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 546                 "|%s|%s|%s|%s|%s|",
 547                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 548                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 549                 enrollee->dev_name ? enrollee->dev_name : "",
 550                 enrollee->manufacturer ? enrollee->manufacturer : "",
 551                 enrollee->model_name ? enrollee->model_name : "",
 552                 enrollee->model_number ? enrollee->model_number : "",
 553                 enrollee->serial_number ? enrollee->serial_number : "");
 554 }
 555
 556
 557 static void wpa_supplicant_wps_event_er_enrollee_remove(
 558         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 559 {
 560         char uuid_str[100];
 561         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 562         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 563                 uuid_str, MAC2STR(enrollee->mac_addr));
 564 }
 565
 566
 567 static void wpa_supplicant_wps_event_er_ap_settings(
 568         struct wpa_supplicant *wpa_s,
 569         struct wps_event_er_ap_settings *ap_settings)
 570 {
 571         char uuid_str[100];
 572         char key_str[65];
 573         const struct wps_credential *cred = ap_settings->cred;
 574
 575         key_str[0] = '\0';
 576         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 577                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 578                         os_memcpy(key_str, cred->key, cred->key_len);
 579                         key_str[cred->key_len] = '\0';
 580                 }
 581         }
 582
 583         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 584         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 585         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 586                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 587                      "key=%s",
 588                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 589                      cred->auth_type, cred->encr_type, key_str);
 590 }
 591
 592
 593 static void wpa_supplicant_wps_event_er_set_sel_reg(
 594         struct wpa_supplicant *wpa_s,
 595         struct wps_event_er_set_selected_registrar *ev)
 596 {
 597         char uuid_str[100];
 598
 599         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 600         switch (ev->state) {
 601         case WPS_ER_SET_SEL_REG_START:
 602                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 603                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 604                         "sel_reg_config_methods=0x%x",
 605                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 606                         ev->sel_reg_config_methods);
 607                 break;
 608         case WPS_ER_SET_SEL_REG_DONE:
 609                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 610                         "uuid=%s state=DONE", uuid_str);
 611                 break;
 612         case WPS_ER_SET_SEL_REG_FAILED:
 613                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 614                         "uuid=%s state=FAILED", uuid_str);
 615                 break;
 616         }
 617 }
 618
 619
 620 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 621                                      union wps_event_data *data)
 622 {
 623         struct wpa_supplicant *wpa_s = ctx;
 624         switch (event) {
 625         case WPS_EV_M2D:
 626                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 627                 break;
 628         case WPS_EV_FAIL:
 629                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 630                 break;
 631         case WPS_EV_SUCCESS:
 632                 wpa_supplicant_wps_event_success(wpa_s);
 633                 break;
 634         case WPS_EV_PWD_AUTH_FAIL:
 635 #ifdef CONFIG_AP
 636                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 637                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 638 #endif /* CONFIG_AP */
 639                 break;
 640         case WPS_EV_PBC_OVERLAP:
 641                 break;
 642         case WPS_EV_PBC_TIMEOUT:
 643                 break;
 644         case WPS_EV_ER_AP_ADD:
 645                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 646                 break;
 647         case WPS_EV_ER_AP_REMOVE:
 648                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 649                 break;
 650         case WPS_EV_ER_ENROLLEE_ADD:
 651                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 652                                                          &data->enrollee);
 653                 break;
 654         case WPS_EV_ER_ENROLLEE_REMOVE:
 655                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 656                                                             &data->enrollee);
 657                 break;
 658         case WPS_EV_ER_AP_SETTINGS:
 659                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 660                                                         &data->ap_settings);
 661                 break;
 662         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 663                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 664                                                         &data->set_sel_reg);
 665                 break;
 666         case WPS_EV_AP_PIN_SUCCESS:
 667                 break;
 668         }
 669 }
 670
 671
 672 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 673 {
 674         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 675             eap_is_wps_pin_enrollee(&ssid->eap))
 676                 return WPS_REQ_ENROLLEE;
 677         else
 678                 return WPS_REQ_REGISTRAR;
 679 }
 680
 681
 682 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 683 {
 684         int id;
 685         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 686
 687         prev_current = wpa_s->current_ssid;
 688
 689         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 690
 691         /* Remove any existing WPS network from configuration */
 692         ssid = wpa_s->conf->ssid;
 693         while (ssid) {
 694                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 695                         if (ssid == wpa_s->current_ssid) {
 696                                 wpa_s->current_ssid = NULL;
 697                                 if (ssid != NULL)
 698                                         wpas_notify_network_changed(wpa_s);
 699                         }
 700                         id = ssid->id;
 701                         remove_ssid = ssid;
 702                 } else
 703                         id = -1;
 704                 ssid = ssid->next;
 705                 if (id >= 0) {
 706                         if (prev_current == remove_ssid) {
 707                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 708                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 709                                                        NULL);
 710                         }
 711                         wpas_notify_network_removed(wpa_s, remove_ssid);
 712                         wpa_config_remove_network(wpa_s->conf, id);
 713                 }
 714         }
 715 }
 716
 717
 718 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 719 {
 720         struct wpa_supplicant *wpa_s = eloop_ctx;
 721         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 722                 "out");
 723         wpas_clear_wps(wpa_s);
 724 }
 725
 726
 727 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 728                                               int registrar, const u8 *bssid)
 729 {
 730         struct wpa_ssid *ssid;
 731
 732         ssid = wpa_config_add_network(wpa_s->conf);
 733         if (ssid == NULL)
 734                 return NULL;
 735         wpas_notify_network_added(wpa_s, ssid);
 736         wpa_config_set_network_defaults(ssid);
 737         ssid->temporary = 1;
 738         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 739             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 740             wpa_config_set(ssid, "identity", registrar ?
 741                            "\"" WSC_ID_REGISTRAR "\"" :
 742                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 743                 wpas_notify_network_removed(wpa_s, ssid);
 744                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 745                 return NULL;
 746         }
 747
 748         if (bssid) {
 749 #ifndef CONFIG_P2P
 750                 struct wpa_bss *bss;
 751                 int count = 0;
 752 #endif /* CONFIG_P2P */
 753
 754                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 755                 ssid->bssid_set = 1;
 756
 757                 /*
 758                  * Note: With P2P, the SSID may change at the time the WPS
 759                  * provisioning is started, so better not filter the AP based
 760                  * on the current SSID in the scan results.
 761                  */
 762 #ifndef CONFIG_P2P
 763                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 764                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 765                                 continue;
 766
 767                         os_free(ssid->ssid);
 768                         ssid->ssid = os_malloc(bss->ssid_len);
 769                         if (ssid->ssid == NULL)
 770                                 break;
 771                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 772                         ssid->ssid_len = bss->ssid_len;
 773                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 774                                           "scan results",
 775                                           ssid->ssid, ssid->ssid_len);
 776                         count++;
 777                 }
 778
 779                 if (count > 1) {
 780                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 781                                    "for the AP; use wildcard");
 782                         os_free(ssid->ssid);
 783                         ssid->ssid = NULL;
 784                         ssid->ssid_len = 0;
 785                 }
 786 #endif /* CONFIG_P2P */
 787         }
 788
 789         return ssid;
 790 }
 791
 792
 793 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 794                              struct wpa_ssid *selected, const u8 *bssid)
 795 {
 796         struct wpa_ssid *ssid;
 797         struct wpa_bss *bss;
 798
 799         wpa_s->known_wps_freq = 0;
 800         if (bssid) {
 801                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 802                 if (bss && bss->freq > 0) {
 803                         wpa_s->known_wps_freq = 1;
 804                         wpa_s->wps_freq = bss->freq;
 805                 }
 806         }
 807
 808         if (wpa_s->current_ssid)
 809                 wpa_supplicant_deauthenticate(
 810                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 811
 812         /* Mark all other networks disabled and trigger reassociation */
 813         ssid = wpa_s->conf->ssid;
 814         while (ssid) {
 815                 int was_disabled = ssid->disabled;
 816                 /*
 817                  * In case the network object corresponds to a persistent group
 818                  * then do not send out network disabled signal. In addition,
 819                  * do not change disabled status of persistent network objects
 820                  * from 2 to 1 should we connect to another network.
 821                  */
 822                 if (was_disabled != 2) {
 823                         ssid->disabled = ssid != selected;
 824                         if (was_disabled != ssid->disabled)
 825                                 wpas_notify_network_enabled_changed(wpa_s,
 826                                                                     ssid);
 827                 }
 828                 ssid = ssid->next;
 829         }
 830         wpa_s->disconnected = 0;
 831         wpa_s->reassociate = 1;
 832         wpa_s->scan_runs = 0;
 833         wpa_s->normal_scans = 0;
 834         wpa_s->wps_success = 0;
 835         wpa_s->blacklist_cleared = 0;
 836         wpa_supplicant_req_scan(wpa_s, 0, 0);
 837 }
 838
 839
 840 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 841                        int p2p_group)
 842 {
 843         struct wpa_ssid *ssid;
 844         wpas_clear_wps(wpa_s);
 845         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 846         if (ssid == NULL)
 847                 return -1;
 848         ssid->temporary = 1;
 849         ssid->p2p_group = p2p_group;
 850 #ifdef CONFIG_P2P
 851         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 852                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 853                 if (ssid->ssid) {
 854                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 855                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 856                                   ssid->ssid_len);
 857                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 858                                           "SSID", ssid->ssid, ssid->ssid_len);
 859                 }
 860         }
 861 #endif /* CONFIG_P2P */
 862         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 863         if (wpa_s->wps_fragment_size)
 864                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 865         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 866                                wpa_s, NULL);
 867         wpas_wps_reassoc(wpa_s, ssid, bssid);
 868         return 0;
 869 }
 870
 871
 872 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 873                        const char *pin, int p2p_group, u16 dev_pw_id)
 874 {
 875         struct wpa_ssid *ssid;
 876         char val[128];
 877         unsigned int rpin = 0;
 878
 879         wpas_clear_wps(wpa_s);
 880         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 881         if (ssid == NULL)
 882                 return -1;
 883         ssid->temporary = 1;
 884         ssid->p2p_group = p2p_group;
 885 #ifdef CONFIG_P2P
 886         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 887                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 888                 if (ssid->ssid) {
 889                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 890                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 891                                   ssid->ssid_len);
 892                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 893                                           "SSID", ssid->ssid, ssid->ssid_len);
 894                 }
 895         }
 896 #endif /* CONFIG_P2P */
 897         if (pin)
 898                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 899                             pin, dev_pw_id);
 900         else {
 901                 rpin = wps_generate_pin();
 902                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 903                             rpin, dev_pw_id);
 904         }
 905         wpa_config_set(ssid, "phase1", val, 0);
 906         if (wpa_s->wps_fragment_size)
 907                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 908         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 909                                wpa_s, NULL);
 910         wpas_wps_reassoc(wpa_s, ssid, bssid);
 911         return rpin;
 912 }
 913
 914
 915 /* Cancel the wps pbc/pin requests */
 916 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 917 {
 918 #ifdef CONFIG_AP
 919         if (wpa_s->ap_iface) {
 920                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 921                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 922         }
 923 #endif /* CONFIG_AP */
 924
 925         if (wpa_s->wpa_state == WPA_SCANNING ||
 926             wpa_s->wpa_state == WPA_DISCONNECTED) {
 927                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 928                 wpa_supplicant_cancel_scan(wpa_s);
 929                 wpas_clear_wps(wpa_s);
 930         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 931                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 932                            "deauthenticate");
 933                 wpa_supplicant_deauthenticate(wpa_s,
 934                                               WLAN_REASON_DEAUTH_LEAVING);
 935                 wpas_clear_wps(wpa_s);
 936         }
 937
 938         return 0;
 939 }
 940
 941
 942 #ifdef CONFIG_WPS_OOB
 943 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 944                        char *path, char *method, char *name)
 945 {
 946         struct wps_context *wps = wpa_s->wps;
 947         struct oob_device_data *oob_dev;
 948
 949         oob_dev = wps_get_oob_device(device_type);
 950         if (oob_dev == NULL)
 951                 return -1;
 952         oob_dev->device_path = path;
 953         oob_dev->device_name = name;
 954         wps->oob_conf.oob_method = wps_get_oob_method(method);
 955
 956         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 957                 /*
 958                  * Use pre-configured DH keys in order to be able to write the
 959                  * key hash into the OOB file.
 960                  */
 961                 wpabuf_free(wps->dh_pubkey);
 962                 wpabuf_free(wps->dh_privkey);
 963                 wps->dh_privkey = NULL;
 964                 wps->dh_pubkey = NULL;
 965                 dh5_free(wps->dh_ctx);
 966                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 967                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 968                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 969                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 970                                    "Diffie-Hellman handshake");
 971                         return -1;
 972                 }
 973         }
 974
 975         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 976                 wpas_clear_wps(wpa_s);
 977
 978         if (wps_process_oob(wps, oob_dev, 0) < 0)
 979                 return -1;
 980
 981         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 982              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 983             wpas_wps_start_pin(wpa_s, NULL,
 984                                wpabuf_head(wps->oob_conf.dev_password), 0,
 985                                DEV_PW_DEFAULT) < 0)
 986                         return -1;
 987
 988         return 0;
 989 }
 990 #endif /* CONFIG_WPS_OOB */
 991
 992
 993 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 994                        const char *pin, struct wps_new_ap_settings *settings)
 995 {
 996         struct wpa_ssid *ssid;
 997         char val[200];
 998         char *pos, *end;
 999         int res;
1000
1001         if (!pin)
1002                 return -1;
1003         wpas_clear_wps(wpa_s);
1004         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1005         if (ssid == NULL)
1006                 return -1;
1007         ssid->temporary = 1;
1008         pos = val;
1009         end = pos + sizeof(val);
1010         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1011         if (res < 0 || res >= end - pos)
1012                 return -1;
1013         pos += res;
1014         if (settings) {
1015                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1016                                   "new_encr=%s new_key=%s",
1017                                   settings->ssid_hex, settings->auth,
1018                                   settings->encr, settings->key_hex);
1019                 if (res < 0 || res >= end - pos)
1020                         return -1;
1021                 pos += res;
1022         }
1023         res = os_snprintf(pos, end - pos, "\"");
1024         if (res < 0 || res >= end - pos)
1025                 return -1;
1026         wpa_config_set(ssid, "phase1", val, 0);
1027         if (wpa_s->wps_fragment_size)
1028                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1029         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1030                                wpa_s, NULL);
1031         wpas_wps_reassoc(wpa_s, ssid, bssid);
1032         return 0;
1033 }
1034
1035
1036 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1037                                size_t psk_len)
1038 {
1039         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1040                    "STA " MACSTR, MAC2STR(mac_addr));
1041         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1042
1043         /* TODO */
1044
1045         return 0;
1046 }
1047
1048
1049 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1050                                    const struct wps_device_data *dev)
1051 {
1052         char uuid[40], txt[400];
1053         int len;
1054         char devtype[WPS_DEV_TYPE_BUFSIZE];
1055         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1056                 return;
1057         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1058         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1059                           " [%s|%s|%s|%s|%s|%s]",
1060                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1061                           dev->manufacturer, dev->model_name,
1062                           dev->model_number, dev->serial_number,
1063                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1064                                                sizeof(devtype)));
1065         if (len > 0 && len < (int) sizeof(txt))
1066                 wpa_printf(MSG_INFO, "%s", txt);
1067 }
1068
1069
1070 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1071                                     u16 sel_reg_config_methods)
1072 {
1073 #ifdef CONFIG_WPS_ER
1074         struct wpa_supplicant *wpa_s = ctx;
1075
1076         if (wpa_s->wps_er == NULL)
1077                 return;
1078         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1079                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1080                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1081         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1082                            sel_reg_config_methods);
1083 #endif /* CONFIG_WPS_ER */
1084 }
1085
1086
1087 static u16 wps_fix_config_methods(u16 config_methods)
1088 {
1089 #ifdef CONFIG_WPS2
1090         if ((config_methods &
1091              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1092               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1093                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1094                            "virtual_display for WPS 2.0 compliance");
1095                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1096         }
1097         if ((config_methods &
1098              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1099               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1100                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1101                            "virtual_push_button for WPS 2.0 compliance");
1102                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1103         }
1104 #endif /* CONFIG_WPS2 */
1105
1106         return config_methods;
1107 }
1108
1109
1110 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1111                               struct wps_context *wps)
1112 {
1113         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1114         if (is_nil_uuid(wpa_s->conf->uuid)) {
1115                 struct wpa_supplicant *first;
1116                 first = wpa_s->global->ifaces;
1117                 while (first && first->next)
1118                         first = first->next;
1119                 if (first && first != wpa_s) {
1120                         if (wps != wpa_s->global->ifaces->wps)
1121                                 os_memcpy(wps->uuid,
1122                                           wpa_s->global->ifaces->wps->uuid,
1123                                           WPS_UUID_LEN);
1124                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1125                                     "interface", wps->uuid, WPS_UUID_LEN);
1126                 } else {
1127                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1128                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1129                                     "address", wps->uuid, WPS_UUID_LEN);
1130                 }
1131         } else {
1132                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1133                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1134                             wps->uuid, WPS_UUID_LEN);
1135         }
1136 }
1137
1138
1139 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1140                                        struct wps_context *wps)
1141 {
1142         wpabuf_free(wps->dev.vendor_ext_m1);
1143         wps->dev.vendor_ext_m1 = NULL;
1144
1145         if (wpa_s->conf->wps_vendor_ext_m1) {
1146                 wps->dev.vendor_ext_m1 =
1147                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1148                 if (!wps->dev.vendor_ext_m1) {
1149                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1150                                    "allocate memory for vendor_ext_m1");
1151                 }
1152         }
1153 }
1154
1155
1156 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1157 {
1158         struct wps_context *wps;
1159         struct wps_registrar_config rcfg;
1160         struct hostapd_hw_modes *modes;
1161         u16 m;
1162
1163         wps = os_zalloc(sizeof(*wps));
1164         if (wps == NULL)
1165                 return -1;
1166
1167         wps->cred_cb = wpa_supplicant_wps_cred;
1168         wps->event_cb = wpa_supplicant_wps_event;
1169         wps->cb_ctx = wpa_s;
1170
1171         wps->dev.device_name = wpa_s->conf->device_name;
1172         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1173         wps->dev.model_name = wpa_s->conf->model_name;
1174         wps->dev.model_number = wpa_s->conf->model_number;
1175         wps->dev.serial_number = wpa_s->conf->serial_number;
1176         wps->config_methods =
1177                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1178         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1179             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1180                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1181                            "methods are not allowed at the same time");
1182                 os_free(wps);
1183                 return -1;
1184         }
1185         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1186         wps->dev.config_methods = wps->config_methods;
1187         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1188                   WPS_DEV_TYPE_LEN);
1189
1190         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1191         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1192                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1193
1194         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1195
1196         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1197         modes = wpa_s->hw.modes;
1198         if (modes) {
1199                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1200                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1201                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1202                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1203                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1204                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1205                 }
1206         }
1207         if (wps->dev.rf_bands == 0) {
1208                 /*
1209                  * Default to claiming support for both bands if the driver
1210                  * does not provide support for fetching supported bands.
1211                  */
1212                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1213         }
1214         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1215         wpas_wps_set_uuid(wpa_s, wps);
1216
1217         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1218         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1219
1220         os_memset(&rcfg, 0, sizeof(rcfg));
1221         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1222         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1223         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1224         rcfg.cb_ctx = wpa_s;
1225
1226         wps->registrar = wps_registrar_init(wps, &rcfg);
1227         if (wps->registrar == NULL) {
1228                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1229                 os_free(wps);
1230                 return -1;
1231         }
1232
1233         wpa_s->wps = wps;
1234
1235         return 0;
1236 }
1237
1238
1239 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1240 {
1241         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1242
1243         if (wpa_s->wps == NULL)
1244                 return;
1245
1246 #ifdef CONFIG_WPS_ER
1247         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1248         wpa_s->wps_er = NULL;
1249 #endif /* CONFIG_WPS_ER */
1250
1251         wps_registrar_deinit(wpa_s->wps->registrar);
1252         wpabuf_free(wpa_s->wps->dh_pubkey);
1253         wpabuf_free(wpa_s->wps->dh_privkey);
1254         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1255         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1256         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1257         os_free(wpa_s->wps->network_key);
1258         os_free(wpa_s->wps);
1259         wpa_s->wps = NULL;
1260 }
1261
1262
1263 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1264                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1265 {
1266         struct wpabuf *wps_ie;
1267
1268         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1269                 return -1;
1270
1271         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1272         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1273                 if (!wps_ie) {
1274                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1275                         return 0;
1276                 }
1277
1278                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1279                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1280                                    "without active PBC Registrar");
1281                         wpabuf_free(wps_ie);
1282                         return 0;
1283                 }
1284
1285                 /* TODO: overlap detection */
1286                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1287                            "(Active PBC)");
1288                 wpabuf_free(wps_ie);
1289                 return 1;
1290         }
1291
1292         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1293                 if (!wps_ie) {
1294                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1295                         return 0;
1296                 }
1297
1298                 /*
1299                  * Start with WPS APs that advertise our address as an
1300                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1301                  * allow any WPS AP after couple of scans since some APs do not
1302                  * set Selected Registrar attribute properly when using
1303                  * external Registrar.
1304                  */
1305                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1306                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1307                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1308                                            "without active PIN Registrar");
1309                                 wpabuf_free(wps_ie);
1310                                 return 0;
1311                         }
1312                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1313                 } else {
1314                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1315                                    "(Authorized MAC or Active PIN)");
1316                 }
1317                 wpabuf_free(wps_ie);
1318                 return 1;
1319         }
1320
1321         if (wps_ie) {
1322                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1323                 wpabuf_free(wps_ie);
1324                 return 1;
1325         }
1326
1327         return -1;
1328 }
1329
1330
1331 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1332                               struct wpa_ssid *ssid,
1333                               struct wpa_scan_res *bss)
1334 {
1335         struct wpabuf *wps_ie = NULL;
1336         int ret = 0;
1337
1338         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1339                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1340                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1341                         /* allow wildcard SSID for WPS PBC */
1342                         ret = 1;
1343                 }
1344         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1345                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1346                 if (wps_ie &&
1347                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1348                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1349                         /* allow wildcard SSID for WPS PIN */
1350                         ret = 1;
1351                 }
1352         }
1353
1354         if (!ret && ssid->bssid_set &&
1355             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1356                 /* allow wildcard SSID due to hardcoded BSSID match */
1357                 ret = 1;
1358         }
1359
1360 #ifdef CONFIG_WPS_STRICT
1361         if (wps_ie) {
1362                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1363                                                    0, bss->bssid) < 0)
1364                         ret = 0;
1365                 if (bss->beacon_ie_len) {
1366                         struct wpabuf *bcn_wps;
1367                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1368                                 bss, WPS_IE_VENDOR_TYPE);
1369                         if (bcn_wps == NULL) {
1370                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1371                                            "missing from AP Beacon");
1372                                 ret = 0;
1373                         } else {
1374                                 if (wps_validate_beacon(wps_ie) < 0)
1375                                         ret = 0;
1376                                 wpabuf_free(bcn_wps);
1377                         }
1378                 }
1379         }
1380 #endif /* CONFIG_WPS_STRICT */
1381
1382         wpabuf_free(wps_ie);
1383
1384         return ret;
1385 }
1386
1387
1388 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1389                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1390 {
1391         const u8 *sel_uuid, *uuid;
1392         struct wpabuf *wps_ie;
1393         int ret = 0;
1394         struct wpa_bss *bss;
1395
1396         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1397                 return 0;
1398
1399         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1400                    "present in scan results; selected BSSID " MACSTR,
1401                    MAC2STR(selected->bssid));
1402
1403         /* Make sure that only one AP is in active PBC mode */
1404         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1405         if (wps_ie) {
1406                 sel_uuid = wps_get_uuid_e(wps_ie);
1407                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1408                             sel_uuid, UUID_LEN);
1409         } else {
1410                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1411                            "WPS IE?!");
1412                 sel_uuid = NULL;
1413         }
1414
1415         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1416                 struct wpabuf *ie;
1417                 if (bss == selected)
1418                         continue;
1419                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1420                 if (!ie)
1421                         continue;
1422                 if (!wps_is_selected_pbc_registrar(ie)) {
1423                         wpabuf_free(ie);
1424                         continue;
1425                 }
1426                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1427                            MACSTR, MAC2STR(bss->bssid));
1428                 uuid = wps_get_uuid_e(ie);
1429                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1430                             uuid, UUID_LEN);
1431                 if (sel_uuid == NULL || uuid == NULL ||
1432                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1433                         ret = 1; /* PBC overlap */
1434                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1435                                 MACSTR " and " MACSTR,
1436                                 MAC2STR(selected->bssid),
1437                                 MAC2STR(bss->bssid));
1438                         wpabuf_free(ie);
1439                         break;
1440                 }
1441
1442                 /* TODO: verify that this is reasonable dual-band situation */
1443
1444                 wpabuf_free(ie);
1445         }
1446
1447         wpabuf_free(wps_ie);
1448
1449         return ret;
1450 }
1451
1452
1453 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1454 {
1455         struct wpa_bss *bss;
1456         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1457
1458         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1459                 return;
1460
1461         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1462                 struct wpabuf *ie;
1463                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1464                 if (!ie)
1465                         continue;
1466                 if (wps_is_selected_pbc_registrar(ie))
1467                         pbc++;
1468                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1469                         auth++;
1470                 else if (wps_is_selected_pin_registrar(ie))
1471                         pin++;
1472                 else
1473                         wps++;
1474                 wpabuf_free(ie);
1475         }
1476
1477         if (pbc)
1478                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1479         else if (auth)
1480                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1481         else if (pin)
1482                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1483         else if (wps)
1484                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1485 }
1486
1487
1488 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1489 {
1490         struct wpa_ssid *ssid;
1491
1492         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1493                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1494                         return 1;
1495         }
1496
1497         return 0;
1498 }
1499
1500
1501 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1502                               char *end)
1503 {
1504         struct wpabuf *wps_ie;
1505         int ret;
1506
1507         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1508         if (wps_ie == NULL)
1509                 return 0;
1510
1511         ret = wps_attr_text(wps_ie, buf, end);
1512         wpabuf_free(wps_ie);
1513         return ret;
1514 }
1515
1516
1517 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1518 {
1519 #ifdef CONFIG_WPS_ER
1520         if (wpa_s->wps_er) {
1521                 wps_er_refresh(wpa_s->wps_er);
1522                 return 0;
1523         }
1524         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1525         if (wpa_s->wps_er == NULL)
1526                 return -1;
1527         return 0;
1528 #else /* CONFIG_WPS_ER */
1529         return 0;
1530 #endif /* CONFIG_WPS_ER */
1531 }
1532
1533
1534 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1535 {
1536 #ifdef CONFIG_WPS_ER
1537         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1538         wpa_s->wps_er = NULL;
1539 #endif /* CONFIG_WPS_ER */
1540         return 0;
1541 }
1542
1543
1544 #ifdef CONFIG_WPS_ER
1545 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1546                         const char *uuid, const char *pin)
1547 {
1548         u8 u[UUID_LEN];
1549         int any = 0;
1550
1551         if (os_strcmp(uuid, "any") == 0)
1552                 any = 1;
1553         else if (uuid_str2bin(uuid, u))
1554                 return -1;
1555         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1556                                      any ? NULL : u,
1557                                      (const u8 *) pin, os_strlen(pin), 300);
1558 }
1559
1560
1561 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1562 {
1563         u8 u[UUID_LEN];
1564
1565         if (uuid_str2bin(uuid, u))
1566                 return -1;
1567         return wps_er_pbc(wpa_s->wps_er, u);
1568 }
1569
1570
1571 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1572                       const char *pin)
1573 {
1574         u8 u[UUID_LEN];
1575
1576         if (uuid_str2bin(uuid, u))
1577                 return -1;
1578         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1579                             os_strlen(pin));
1580 }
1581
1582
1583 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1584                            int id)
1585 {
1586         u8 u[UUID_LEN];
1587         struct wpa_ssid *ssid;
1588         struct wps_credential cred;
1589
1590         if (uuid_str2bin(uuid, u))
1591                 return -1;
1592         ssid = wpa_config_get_network(wpa_s->conf, id);
1593         if (ssid == NULL || ssid->ssid == NULL)
1594                 return -1;
1595
1596         os_memset(&cred, 0, sizeof(cred));
1597         if (ssid->ssid_len > 32)
1598                 return -1;
1599         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1600         cred.ssid_len = ssid->ssid_len;
1601         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1602                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1603                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1604                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1605                         cred.encr_type = WPS_ENCR_AES;
1606                 else
1607                         cred.encr_type = WPS_ENCR_TKIP;
1608                 if (ssid->passphrase) {
1609                         cred.key_len = os_strlen(ssid->passphrase);
1610                         if (cred.key_len >= 64)
1611                                 return -1;
1612                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1613                 } else if (ssid->psk_set) {
1614                         cred.key_len = 32;
1615                         os_memcpy(cred.key, ssid->psk, 32);
1616                 } else
1617                         return -1;
1618         } else {
1619                 cred.auth_type = WPS_AUTH_OPEN;
1620                 cred.encr_type = WPS_ENCR_NONE;
1621         }
1622         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1623 }
1624
1625
1626 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1627                        const char *pin, struct wps_new_ap_settings *settings)
1628 {
1629         u8 u[UUID_LEN];
1630         struct wps_credential cred;
1631         size_t len;
1632
1633         if (uuid_str2bin(uuid, u))
1634                 return -1;
1635         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1636             settings->encr == NULL || settings->key_hex == NULL)
1637                 return -1;
1638
1639         os_memset(&cred, 0, sizeof(cred));
1640         len = os_strlen(settings->ssid_hex);
1641         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1642             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1643                 return -1;
1644         cred.ssid_len = len / 2;
1645
1646         len = os_strlen(settings->key_hex);
1647         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1648             hexstr2bin(settings->key_hex, cred.key, len / 2))
1649                 return -1;
1650         cred.key_len = len / 2;
1651
1652         if (os_strcmp(settings->auth, "OPEN") == 0)
1653                 cred.auth_type = WPS_AUTH_OPEN;
1654         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1655                 cred.auth_type = WPS_AUTH_WPAPSK;
1656         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1657                 cred.auth_type = WPS_AUTH_WPA2PSK;
1658         else
1659                 return -1;
1660
1661         if (os_strcmp(settings->encr, "NONE") == 0)
1662                 cred.encr_type = WPS_ENCR_NONE;
1663         else if (os_strcmp(settings->encr, "WEP") == 0)
1664                 cred.encr_type = WPS_ENCR_WEP;
1665         else if (os_strcmp(settings->encr, "TKIP") == 0)
1666                 cred.encr_type = WPS_ENCR_TKIP;
1667         else if (os_strcmp(settings->encr, "CCMP") == 0)
1668                 cred.encr_type = WPS_ENCR_AES;
1669         else
1670                 return -1;
1671
1672         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1673                              os_strlen(pin), &cred);
1674 }
1675
1676
1677 #ifdef CONFIG_WPS_NFC
1678 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1679                                              int ndef, const char *uuid)
1680 {
1681         struct wpabuf *ret;
1682         u8 u[UUID_LEN];
1683
1684         if (!wpa_s->wps_er)
1685                 return NULL;
1686
1687         if (uuid_str2bin(uuid, u))
1688                 return NULL;
1689
1690         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1691         if (ndef && ret) {
1692                 struct wpabuf *tmp;
1693                 tmp = ndef_build_wifi(ret);
1694                 wpabuf_free(ret);
1695                 if (tmp == NULL)
1696                         return NULL;
1697                 ret = tmp;
1698         }
1699
1700         return ret;
1701 }
1702 #endif /* CONFIG_WPS_NFC */
1703
1704
1705 static int callbacks_pending = 0;
1706
1707 static void wpas_wps_terminate_cb(void *ctx)
1708 {
1709         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1710         if (--callbacks_pending <= 0)
1711                 eloop_terminate();
1712 }
1713 #endif /* CONFIG_WPS_ER */
1714
1715
1716 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1717 {
1718 #ifdef CONFIG_WPS_ER
1719         if (wpa_s->wps_er) {
1720                 callbacks_pending++;
1721                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1722                 wpa_s->wps_er = NULL;
1723                 return 1;
1724         }
1725 #endif /* CONFIG_WPS_ER */
1726         return 0;
1727 }
1728
1729
1730 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1731 {
1732         struct wpa_ssid *ssid;
1733
1734         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1735                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1736                         return 1;
1737         }
1738
1739         return 0;
1740 }
1741
1742
1743 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1744 {
1745         struct wps_context *wps = wpa_s->wps;
1746
1747         if (wps == NULL)
1748                 return;
1749
1750         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1751                 wps->config_methods = wps_config_methods_str2bin(
1752                         wpa_s->conf->config_methods);
1753                 if ((wps->config_methods &
1754                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1755                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1756                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1757                                    "config methods are not allowed at the "
1758                                    "same time");
1759                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1760                 }
1761         }
1762         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1763
1764         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1765                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1766                           WPS_DEV_TYPE_LEN);
1767
1768         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1769                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1770                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1771                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1772         }
1773
1774         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1775                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1776
1777         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1778                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1779
1780         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1781                 wpas_wps_set_uuid(wpa_s, wps);
1782
1783         if (wpa_s->conf->changed_parameters &
1784             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1785                 /* Update pointers to make sure they refer current values */
1786                 wps->dev.device_name = wpa_s->conf->device_name;
1787                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1788                 wps->dev.model_name = wpa_s->conf->model_name;
1789                 wps->dev.model_number = wpa_s->conf->model_number;
1790                 wps->dev.serial_number = wpa_s->conf->serial_number;
1791         }
1792 }
1793
1794
1795 #ifdef CONFIG_WPS_NFC
1796
1797 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1798 {
1799         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1800                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1801                                  &wpa_s->conf->wps_nfc_dh_privkey,
1802                                  &wpa_s->conf->wps_nfc_dev_pw);
1803 }
1804
1805
1806 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1807 {
1808         struct wps_context *wps = wpa_s->wps;
1809         char pw[32 * 2 + 1];
1810
1811         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1812             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1813             wpa_s->conf->wps_nfc_dev_pw == NULL)
1814                 return -1;
1815
1816         dh5_free(wps->dh_ctx);
1817         wpabuf_free(wps->dh_pubkey);
1818         wpabuf_free(wps->dh_privkey);
1819         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1820         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1821         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1822                 wps->dh_ctx = NULL;
1823                 wpabuf_free(wps->dh_pubkey);
1824                 wps->dh_pubkey = NULL;
1825                 wpabuf_free(wps->dh_privkey);
1826                 wps->dh_privkey = NULL;
1827                 return -1;
1828         }
1829         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1830         if (wps->dh_ctx == NULL)
1831                 return -1;
1832
1833         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1834                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1835                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1836         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1837                                   wpa_s->conf->wps_nfc_dev_pw_id);
1838 }
1839
1840
1841 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1842                              struct wps_parse_attr *attr)
1843 {
1844         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1845                 return -1;
1846
1847         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1848                 return 0;
1849
1850         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1851                    "based on the received credential added");
1852         wpa_s->normal_scans = 0;
1853         wpa_supplicant_reinit_autoscan(wpa_s);
1854         wpa_s->disconnected = 0;
1855         wpa_s->reassociate = 1;
1856         wpa_supplicant_req_scan(wpa_s, 0, 0);
1857
1858         return 0;
1859 }
1860
1861
1862 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1863                                            struct wps_parse_attr *attr)
1864 {
1865         return wps_registrar_add_nfc_password_token(
1866                 wpa_s->wps->registrar, attr->oob_dev_password,
1867                 attr->oob_dev_password_len);
1868 }
1869
1870
1871 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1872                                     const struct wpabuf *wps)
1873 {
1874         struct wps_parse_attr attr;
1875
1876         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1877
1878         if (wps_parse_msg(wps, &attr)) {
1879                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1880                 return -1;
1881         }
1882
1883         if (attr.num_cred)
1884                 return wpas_wps_use_cred(wpa_s, &attr);
1885
1886 #ifdef CONFIG_WPS_ER
1887         if (attr.oob_dev_password)
1888                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1889 #endif /* CONFIG_WPS_ER */
1890
1891         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1892         return -1;
1893 }
1894
1895
1896 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1897                           const struct wpabuf *data)
1898 {
1899         const struct wpabuf *wps = data;
1900         struct wpabuf *tmp = NULL;
1901         int ret;
1902
1903         if (wpabuf_len(data) < 4)
1904                 return -1;
1905
1906         if (*wpabuf_head_u8(data) != 0x10) {
1907                 /* Assume this contains full NDEF record */
1908                 tmp = ndef_parse_wifi(data);
1909                 if (tmp == NULL) {
1910                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1911                         return -1;
1912                 }
1913                 wps = tmp;
1914         }
1915
1916         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1917         wpabuf_free(tmp);
1918         return ret;
1919 }
1920
1921 #endif /* CONFIG_WPS_NFC */