wps_common.c
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00001 /*
00002  * Wi-Fi Protected Setup - common functionality
00003  * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #include "includes.h"
00016 
00017 #include "common.h"
00018 #include "crypto/aes_wrap.h"
00019 #include "crypto/crypto.h"
00020 #include "crypto/dh_group5.h"
00021 #include "crypto/sha1.h"
00022 #include "crypto/sha256.h"
00023 #include "wps_i.h"
00024 #include "wps_dev_attr.h"
00025 
00026 
00027 void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len,
00028              const char *label, u8 *res, size_t res_len)
00029 {
00030         u8 i_buf[4], key_bits[4];
00031         const u8 *addr[4];
00032         size_t len[4];
00033         int i, iter;
00034         u8 hash[SHA256_MAC_LEN], *opos;
00035         size_t left;
00036 
00037         WPA_PUT_BE32(key_bits, res_len * 8);
00038 
00039         addr[0] = i_buf;
00040         len[0] = sizeof(i_buf);
00041         addr[1] = label_prefix;
00042         len[1] = label_prefix_len;
00043         addr[2] = (const u8 *) label;
00044         len[2] = os_strlen(label);
00045         addr[3] = key_bits;
00046         len[3] = sizeof(key_bits);
00047 
00048         iter = (res_len + SHA256_MAC_LEN - 1) / SHA256_MAC_LEN;
00049         opos = res;
00050         left = res_len;
00051 
00052         for (i = 1; i <= iter; i++) {
00053                 WPA_PUT_BE32(i_buf, i);
00054                 hmac_sha256_vector(key, SHA256_MAC_LEN, 4, addr, len, hash);
00055                 if (i < iter) {
00056                         os_memcpy(opos, hash, SHA256_MAC_LEN);
00057                         opos += SHA256_MAC_LEN;
00058                         left -= SHA256_MAC_LEN;
00059                 } else
00060                         os_memcpy(opos, hash, left);
00061         }
00062 }
00063 
00064 
00065 int wps_derive_keys(struct wps_data *wps)
00066 {
00067         struct wpabuf *pubkey, *dh_shared;
00068         u8 dhkey[SHA256_MAC_LEN], kdk[SHA256_MAC_LEN];
00069         const u8 *addr[3];
00070         size_t len[3];
00071         u8 keys[WPS_AUTHKEY_LEN + WPS_KEYWRAPKEY_LEN + WPS_EMSK_LEN];
00072 
00073         if (wps->dh_privkey == NULL) {
00074                 wpa_printf(MSG_DEBUG, "WPS: Own DH private key not available");
00075                 return -1;
00076         }
00077 
00078         pubkey = wps->registrar ? wps->dh_pubkey_e : wps->dh_pubkey_r;
00079         if (pubkey == NULL) {
00080                 wpa_printf(MSG_DEBUG, "WPS: Peer DH public key not available");
00081                 return -1;
00082         }
00083 
00084         dh_shared = dh5_derive_shared(wps->dh_ctx, pubkey, wps->dh_privkey);
00085         dh5_free(wps->dh_ctx);
00086         wps->dh_ctx = NULL;
00087         dh_shared = wpabuf_zeropad(dh_shared, 192);
00088         if (dh_shared == NULL) {
00089                 wpa_printf(MSG_DEBUG, "WPS: Failed to derive DH shared key");
00090                 return -1;
00091         }
00092 
00093         /* Own DH private key is not needed anymore */
00094         wpabuf_free(wps->dh_privkey);
00095         wps->dh_privkey = NULL;
00096 
00097         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH shared key", dh_shared);
00098 
00099         /* DHKey = SHA-256(g^AB mod p) */
00100         addr[0] = wpabuf_head(dh_shared);
00101         len[0] = wpabuf_len(dh_shared);
00102         sha256_vector(1, addr, len, dhkey);
00103         wpa_hexdump_key(MSG_DEBUG, "WPS: DHKey", dhkey, sizeof(dhkey));
00104         wpabuf_free(dh_shared);
00105 
00106         /* KDK = HMAC-SHA-256_DHKey(N1 || EnrolleeMAC || N2) */
00107         addr[0] = wps->nonce_e;
00108         len[0] = WPS_NONCE_LEN;
00109         addr[1] = wps->mac_addr_e;
00110         len[1] = ETH_ALEN;
00111         addr[2] = wps->nonce_r;
00112         len[2] = WPS_NONCE_LEN;
00113         hmac_sha256_vector(dhkey, sizeof(dhkey), 3, addr, len, kdk);
00114         wpa_hexdump_key(MSG_DEBUG, "WPS: KDK", kdk, sizeof(kdk));
00115 
00116         wps_kdf(kdk, NULL, 0, "Wi-Fi Easy and Secure Key Derivation",
00117                 keys, sizeof(keys));
00118         os_memcpy(wps->authkey, keys, WPS_AUTHKEY_LEN);
00119         os_memcpy(wps->keywrapkey, keys + WPS_AUTHKEY_LEN, WPS_KEYWRAPKEY_LEN);
00120         os_memcpy(wps->emsk, keys + WPS_AUTHKEY_LEN + WPS_KEYWRAPKEY_LEN,
00121                   WPS_EMSK_LEN);
00122 
00123         wpa_hexdump_key(MSG_DEBUG, "WPS: AuthKey",
00124                         wps->authkey, WPS_AUTHKEY_LEN);
00125         wpa_hexdump_key(MSG_DEBUG, "WPS: KeyWrapKey",
00126                         wps->keywrapkey, WPS_KEYWRAPKEY_LEN);
00127         wpa_hexdump_key(MSG_DEBUG, "WPS: EMSK", wps->emsk, WPS_EMSK_LEN);
00128 
00129         return 0;
00130 }
00131 
00132 
00133 void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd,
00134                     size_t dev_passwd_len)
00135 {
00136         u8 hash[SHA256_MAC_LEN];
00137 
00138         hmac_sha256(wps->authkey, WPS_AUTHKEY_LEN, dev_passwd,
00139                     (dev_passwd_len + 1) / 2, hash);
00140         os_memcpy(wps->psk1, hash, WPS_PSK_LEN);
00141         hmac_sha256(wps->authkey, WPS_AUTHKEY_LEN,
00142                     dev_passwd + (dev_passwd_len + 1) / 2,
00143                     dev_passwd_len / 2, hash);
00144         os_memcpy(wps->psk2, hash, WPS_PSK_LEN);
00145 
00146         wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Device Password",
00147                               dev_passwd, dev_passwd_len);
00148         wpa_hexdump_key(MSG_DEBUG, "WPS: PSK1", wps->psk1, WPS_PSK_LEN);
00149         wpa_hexdump_key(MSG_DEBUG, "WPS: PSK2", wps->psk2, WPS_PSK_LEN);
00150 }
00151 
00152 
00153 struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr,
00154                                           size_t encr_len)
00155 {
00156         struct wpabuf *decrypted;
00157         const size_t block_size = 16;
00158         size_t i;
00159         u8 pad;
00160         const u8 *pos;
00161 
00162         /* AES-128-CBC */
00163         if (encr == NULL || encr_len < 2 * block_size || encr_len % block_size)
00164         {
00165                 wpa_printf(MSG_DEBUG, "WPS: No Encrypted Settings received");
00166                 return NULL;
00167         }
00168 
00169         decrypted = wpabuf_alloc(encr_len - block_size);
00170         if (decrypted == NULL)
00171                 return NULL;
00172 
00173         wpa_hexdump(MSG_MSGDUMP, "WPS: Encrypted Settings", encr, encr_len);
00174         wpabuf_put_data(decrypted, encr + block_size, encr_len - block_size);
00175         if (aes_128_cbc_decrypt(wps->keywrapkey, encr, wpabuf_mhead(decrypted),
00176                                 wpabuf_len(decrypted))) {
00177                 wpabuf_free(decrypted);
00178                 return NULL;
00179         }
00180 
00181         wpa_hexdump_buf_key(MSG_MSGDUMP, "WPS: Decrypted Encrypted Settings",
00182                             decrypted);
00183 
00184         pos = wpabuf_head_u8(decrypted) + wpabuf_len(decrypted) - 1;
00185         pad = *pos;
00186         if (pad > wpabuf_len(decrypted)) {
00187                 wpa_printf(MSG_DEBUG, "WPS: Invalid PKCS#5 v2.0 pad value");
00188                 wpabuf_free(decrypted);
00189                 return NULL;
00190         }
00191         for (i = 0; i < pad; i++) {
00192                 if (*pos-- != pad) {
00193                         wpa_printf(MSG_DEBUG, "WPS: Invalid PKCS#5 v2.0 pad "
00194                                    "string");
00195                         wpabuf_free(decrypted);
00196                         return NULL;
00197                 }
00198         }
00199         decrypted->used -= pad;
00200 
00201         return decrypted;
00202 }
00203 
00204 
00210 unsigned int wps_pin_checksum(unsigned int pin)
00211 {
00212         unsigned int accum = 0;
00213         while (pin) {
00214                 accum += 3 * (pin % 10);
00215                 pin /= 10;
00216                 accum += pin % 10;
00217                 pin /= 10;
00218         }
00219 
00220         return (10 - accum % 10) % 10;
00221 }
00222 
00223 
00229 unsigned int wps_pin_valid(unsigned int pin)
00230 {
00231         return wps_pin_checksum(pin / 10) == (pin % 10);
00232 }
00233 
00234 
00239 unsigned int wps_generate_pin(void)
00240 {
00241         unsigned int val;
00242 
00243         /* Generate seven random digits for the PIN */
00244         if (os_get_random((unsigned char *) &val, sizeof(val)) < 0) {
00245                 struct os_time now;
00246                 os_get_time(&now);
00247                 val = os_random() ^ now.sec ^ now.usec;
00248         }
00249         val %= 10000000;
00250 
00251         /* Append checksum digit */
00252         return val * 10 + wps_pin_checksum(val);
00253 }
00254 
00255 
00256 void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg)
00257 {
00258         union wps_event_data data;
00259 
00260         if (wps->event_cb == NULL)
00261                 return;
00262 
00263         os_memset(&data, 0, sizeof(data));
00264         data.fail.msg = msg;
00265         wps->event_cb(wps->cb_ctx, WPS_EV_FAIL, &data);
00266 }
00267 
00268 
00269 void wps_success_event(struct wps_context *wps)
00270 {
00271         if (wps->event_cb == NULL)
00272                 return;
00273 
00274         wps->event_cb(wps->cb_ctx, WPS_EV_SUCCESS, NULL);
00275 }
00276 
00277 
00278 void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part)
00279 {
00280         union wps_event_data data;
00281 
00282         if (wps->event_cb == NULL)
00283                 return;
00284 
00285         os_memset(&data, 0, sizeof(data));
00286         data.pwd_auth_fail.enrollee = enrollee;
00287         data.pwd_auth_fail.part = part;
00288         wps->event_cb(wps->cb_ctx, WPS_EV_PWD_AUTH_FAIL, &data);
00289 }
00290 
00291 
00292 void wps_pbc_overlap_event(struct wps_context *wps)
00293 {
00294         if (wps->event_cb == NULL)
00295                 return;
00296 
00297         wps->event_cb(wps->cb_ctx, WPS_EV_PBC_OVERLAP, NULL);
00298 }
00299 
00300 
00301 void wps_pbc_timeout_event(struct wps_context *wps)
00302 {
00303         if (wps->event_cb == NULL)
00304                 return;
00305 
00306         wps->event_cb(wps->cb_ctx, WPS_EV_PBC_TIMEOUT, NULL);
00307 }
00308 
00309 
00310 #ifdef CONFIG_WPS_OOB
00311 
00312 static struct wpabuf * wps_get_oob_cred(struct wps_context *wps)
00313 {
00314         struct wps_data data;
00315         struct wpabuf *plain;
00316 
00317         plain = wpabuf_alloc(500);
00318         if (plain == NULL) {
00319                 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
00320                            "credential");
00321                 return NULL;
00322         }
00323 
00324         os_memset(&data, 0, sizeof(data));
00325         data.wps = wps;
00326         data.auth_type = wps->auth_types;
00327         data.encr_type = wps->encr_types;
00328         if (wps_build_version(plain) || wps_build_cred(&data, plain)) {
00329                 wpabuf_free(plain);
00330                 return NULL;
00331         }
00332 
00333         return plain;
00334 }
00335 
00336 
00337 static struct wpabuf * wps_get_oob_dev_pwd(struct wps_context *wps)
00338 {
00339         struct wpabuf *data;
00340 
00341         data = wpabuf_alloc(9 + WPS_OOB_DEVICE_PASSWORD_ATTR_LEN);
00342         if (data == NULL) {
00343                 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
00344                            "device password attribute");
00345                 return NULL;
00346         }
00347 
00348         wpabuf_free(wps->oob_conf.dev_password);
00349         wps->oob_conf.dev_password =
00350                 wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1);
00351         if (wps->oob_conf.dev_password == NULL) {
00352                 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
00353                            "device password");
00354                 wpabuf_free(data);
00355                 return NULL;
00356         }
00357 
00358         if (wps_build_version(data) ||
00359             wps_build_oob_dev_password(data, wps)) {
00360                 wpa_printf(MSG_ERROR, "WPS: Build OOB device password "
00361                            "attribute error");
00362                 wpabuf_free(data);
00363                 return NULL;
00364         }
00365 
00366         return data;
00367 }
00368 
00369 
00370 static int wps_parse_oob_dev_pwd(struct wps_context *wps,
00371                                  struct wpabuf *data)
00372 {
00373         struct oob_conf_data *oob_conf = &wps->oob_conf;
00374         struct wps_parse_attr attr;
00375         const u8 *pos;
00376 
00377         if (wps_parse_msg(data, &attr) < 0 ||
00378             attr.oob_dev_password == NULL) {
00379                 wpa_printf(MSG_ERROR, "WPS: OOB device password not found");
00380                 return -1;
00381         }
00382 
00383         pos = attr.oob_dev_password;
00384 
00385         oob_conf->pubkey_hash =
00386                 wpabuf_alloc_copy(pos, WPS_OOB_PUBKEY_HASH_LEN);
00387         if (oob_conf->pubkey_hash == NULL) {
00388                 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
00389                            "public key hash");
00390                 return -1;
00391         }
00392         pos += WPS_OOB_PUBKEY_HASH_LEN;
00393 
00394         wps->oob_dev_pw_id = WPA_GET_BE16(pos);
00395         pos += sizeof(wps->oob_dev_pw_id);
00396 
00397         oob_conf->dev_password =
00398                 wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1);
00399         if (oob_conf->dev_password == NULL) {
00400                 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
00401                            "device password");
00402                 return -1;
00403         }
00404         wpa_snprintf_hex_uppercase(wpabuf_put(oob_conf->dev_password,
00405                                    wpabuf_size(oob_conf->dev_password)),
00406                                    wpabuf_size(oob_conf->dev_password), pos,
00407                                    WPS_OOB_DEVICE_PASSWORD_LEN);
00408 
00409         return 0;
00410 }
00411 
00412 
00413 static int wps_parse_oob_cred(struct wps_context *wps, struct wpabuf *data)
00414 {
00415         struct wpabuf msg;
00416         struct wps_parse_attr attr;
00417         size_t i;
00418 
00419         if (wps_parse_msg(data, &attr) < 0 || attr.num_cred <= 0) {
00420                 wpa_printf(MSG_ERROR, "WPS: OOB credential not found");
00421                 return -1;
00422         }
00423 
00424         for (i = 0; i < attr.num_cred; i++) {
00425                 struct wps_credential local_cred;
00426                 struct wps_parse_attr cattr;
00427 
00428                 os_memset(&local_cred, 0, sizeof(local_cred));
00429                 wpabuf_set(&msg, attr.cred[i], attr.cred_len[i]);
00430                 if (wps_parse_msg(&msg, &cattr) < 0 ||
00431                     wps_process_cred(&cattr, &local_cred)) {
00432                         wpa_printf(MSG_ERROR, "WPS: Failed to parse OOB "
00433                                    "credential");
00434                         return -1;
00435                 }
00436                 wps->cred_cb(wps->cb_ctx, &local_cred);
00437         }
00438 
00439         return 0;
00440 }
00441 
00442 
00443 int wps_process_oob(struct wps_context *wps, struct oob_device_data *oob_dev,
00444                     int registrar)
00445 {
00446         struct wpabuf *data;
00447         int ret, write_f, oob_method = wps->oob_conf.oob_method;
00448         void *oob_priv;
00449 
00450         write_f = oob_method == OOB_METHOD_DEV_PWD_E ? !registrar : registrar;
00451 
00452         oob_priv = oob_dev->init_func(wps, oob_dev, registrar);
00453         if (oob_priv == NULL) {
00454                 wpa_printf(MSG_ERROR, "WPS: Failed to initialize OOB device");
00455                 return -1;
00456         }
00457 
00458         if (write_f) {
00459                 if (oob_method == OOB_METHOD_CRED)
00460                         data = wps_get_oob_cred(wps);
00461                 else
00462                         data = wps_get_oob_dev_pwd(wps);
00463 
00464                 ret = 0;
00465                 if (data == NULL || oob_dev->write_func(oob_priv, data) < 0)
00466                         ret = -1;
00467         } else {
00468                 data = oob_dev->read_func(oob_priv);
00469                 if (data == NULL)
00470                         ret = -1;
00471                 else {
00472                         if (oob_method == OOB_METHOD_CRED)
00473                                 ret = wps_parse_oob_cred(wps, data);
00474                         else
00475                                 ret = wps_parse_oob_dev_pwd(wps, data);
00476                 }
00477         }
00478         wpabuf_free(data);
00479         oob_dev->deinit_func(oob_priv);
00480 
00481         if (ret < 0) {
00482                 wpa_printf(MSG_ERROR, "WPS: Failed to process OOB data");
00483                 return -1;
00484         }
00485 
00486         return 0;
00487 }
00488 
00489 
00490 struct oob_device_data * wps_get_oob_device(char *device_type)
00491 {
00492 #ifdef CONFIG_WPS_UFD
00493         if (os_strstr(device_type, "ufd") != NULL)
00494                 return &oob_ufd_device_data;
00495 #endif /* CONFIG_WPS_UFD */
00496 #ifdef CONFIG_WPS_NFC
00497         if (os_strstr(device_type, "nfc") != NULL)
00498                 return &oob_nfc_device_data;
00499 #endif /* CONFIG_WPS_NFC */
00500 
00501         return NULL;
00502 }
00503 
00504 
00505 #ifdef CONFIG_WPS_NFC
00506 struct oob_nfc_device_data * wps_get_oob_nfc_device(char *device_name)
00507 {
00508         if (device_name == NULL)
00509                 return NULL;
00510 #ifdef CONFIG_WPS_NFC_PN531
00511         if (os_strstr(device_name, "pn531") != NULL)
00512                 return &oob_nfc_pn531_device_data;
00513 #endif /* CONFIG_WPS_NFC_PN531 */
00514 
00515         return NULL;
00516 }
00517 #endif /* CONFIG_WPS_NFC */
00518 
00519 
00520 int wps_get_oob_method(char *method)
00521 {
00522         if (os_strstr(method, "pin-e") != NULL)
00523                 return OOB_METHOD_DEV_PWD_E;
00524         if (os_strstr(method, "pin-r") != NULL)
00525                 return OOB_METHOD_DEV_PWD_R;
00526         if (os_strstr(method, "cred") != NULL)
00527                 return OOB_METHOD_CRED;
00528         return OOB_METHOD_UNKNOWN;
00529 }
00530 
00531 #endif /* CONFIG_WPS_OOB */
00532 
00533 
00534 int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN])
00535 {
00536         const char *pos;
00537 
00538         /* <categ>-<OUI>-<subcateg> */
00539         WPA_PUT_BE16(dev_type, atoi(str));
00540         pos = os_strchr(str, '-');
00541         if (pos == NULL)
00542                 return -1;
00543         pos++;
00544         if (hexstr2bin(pos, &dev_type[2], 4))
00545                 return -1;
00546         pos = os_strchr(pos, '-');
00547         if (pos == NULL)
00548                 return -1;
00549         pos++;
00550         WPA_PUT_BE16(&dev_type[6], atoi(pos));
00551 
00552 
00553         return 0;
00554 }
00555 
00556 
00557 char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
00558                             size_t buf_len)
00559 {
00560         int ret;
00561 
00562         ret = os_snprintf(buf, buf_len, "%u-%08X-%u",
00563                           WPA_GET_BE16(dev_type), WPA_GET_BE32(&dev_type[2]),
00564                           WPA_GET_BE16(&dev_type[6]));
00565         if (ret < 0 || (unsigned int) ret >= buf_len)
00566                 return NULL;
00567 
00568         return buf;
00569 }
00570 
00571 
00572 void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid)
00573 {
00574         const u8 *addr[2];
00575         size_t len[2];
00576         u8 hash[SHA1_MAC_LEN];
00577         u8 nsid[16] = {
00578                 0x52, 0x64, 0x80, 0xf8,
00579                 0xc9, 0x9b,
00580                 0x4b, 0xe5,
00581                 0xa6, 0x55,
00582                 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84
00583         };
00584 
00585         addr[0] = nsid;
00586         len[0] = sizeof(nsid);
00587         addr[1] = mac_addr;
00588         len[1] = 6;
00589         sha1_vector(2, addr, len, hash);
00590         os_memcpy(uuid, hash, 16);
00591 
00592         /* Version: 5 = named-based version using SHA-1 */
00593         uuid[6] = (5 << 4) | (uuid[6] & 0x0f);
00594 
00595         /* Variant specified in RFC 4122 */
00596         uuid[8] = 0x80 | (uuid[8] & 0x3f);
00597 }
00598 
00599 
00600 u16 wps_config_methods_str2bin(const char *str)
00601 {
00602         u16 methods = 0;
00603 
00604         if (str == NULL) {
00605                 /* Default to enabling methods based on build configuration */
00606                 methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
00607 #ifdef CONFIG_WPS_UFD
00608                 methods |= WPS_CONFIG_USBA;
00609 #endif /* CONFIG_WPS_UFD */
00610 #ifdef CONFIG_WPS_NFC
00611                 methods |= WPS_CONFIG_NFC_INTERFACE;
00612 #endif /* CONFIG_WPS_NFC */
00613         } else {
00614                 if (os_strstr(str, "usba"))
00615                         methods |= WPS_CONFIG_USBA;
00616                 if (os_strstr(str, "ethernet"))
00617                         methods |= WPS_CONFIG_ETHERNET;
00618                 if (os_strstr(str, "label"))
00619                         methods |= WPS_CONFIG_LABEL;
00620                 if (os_strstr(str, "display"))
00621                         methods |= WPS_CONFIG_DISPLAY;
00622                 if (os_strstr(str, "ext_nfc_token"))
00623                         methods |= WPS_CONFIG_EXT_NFC_TOKEN;
00624                 if (os_strstr(str, "int_nfc_token"))
00625                         methods |= WPS_CONFIG_INT_NFC_TOKEN;
00626                 if (os_strstr(str, "nfc_interface"))
00627                         methods |= WPS_CONFIG_NFC_INTERFACE;
00628                 if (os_strstr(str, "push_button"))
00629                         methods |= WPS_CONFIG_PUSHBUTTON;
00630                 if (os_strstr(str, "keypad"))
00631                         methods |= WPS_CONFIG_KEYPAD;
00632         }
00633 
00634         return methods;
00635 }


wpa_supplicant
Author(s): Package maintained by Blaise Gassend
autogenerated on Thu Jan 2 2014 11:26:39