1 /*
2 * Wi-Fi Protected Setup - common functionality
3 * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16
17 #include "common.h"
18 #include "crypto/aes_wrap.h"
19 #include "crypto/crypto.h"
20 #include "crypto/dh_group5.h"
21 #include "crypto/sha1.h"
22 #include "crypto/sha256.h"
23 #include "crypto/random.h"
24 #include "wps_i.h"
25 #include "wps_dev_attr.h"
26
27
wps_kdf(const u8 * key,const u8 * label_prefix,size_t label_prefix_len,const char * label,u8 * res,size_t res_len)28 void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len,
29 const char *label, u8 *res, size_t res_len)
30 {
31 u8 i_buf[4], key_bits[4];
32 const u8 *addr[4];
33 size_t len[4];
34 int i, iter;
35 u8 hash[SHA256_MAC_LEN], *opos;
36 size_t left;
37
38 WPA_PUT_BE32(key_bits, res_len * 8);
39
40 addr[0] = i_buf;
41 len[0] = sizeof(i_buf);
42 addr[1] = label_prefix;
43 len[1] = label_prefix_len;
44 addr[2] = (const u8 *) label;
45 len[2] = os_strlen(label);
46 addr[3] = key_bits;
47 len[3] = sizeof(key_bits);
48
49 iter = (res_len + SHA256_MAC_LEN - 1) / SHA256_MAC_LEN;
50 opos = res;
51 left = res_len;
52
53 for (i = 1; i <= iter; i++) {
54 WPA_PUT_BE32(i_buf, i);
55 hmac_sha256_vector(key, SHA256_MAC_LEN, 4, addr, len, hash);
56 if (i < iter) {
57 os_memcpy(opos, hash, SHA256_MAC_LEN);
58 opos += SHA256_MAC_LEN;
59 left -= SHA256_MAC_LEN;
60 } else
61 os_memcpy(opos, hash, left);
62 }
63 }
64
65
wps_derive_keys(struct wps_data * wps)66 int wps_derive_keys(struct wps_data *wps)
67 {
68 struct wpabuf *pubkey, *dh_shared;
69 u8 dhkey[SHA256_MAC_LEN], kdk[SHA256_MAC_LEN];
70 const u8 *addr[3];
71 size_t len[3];
72 u8 keys[WPS_AUTHKEY_LEN + WPS_KEYWRAPKEY_LEN + WPS_EMSK_LEN];
73
74 if (wps->dh_privkey == NULL) {
75 wpa_printf(MSG_DEBUG, "WPS: Own DH private key not available");
76 return -1;
77 }
78
79 pubkey = wps->registrar ? wps->dh_pubkey_e : wps->dh_pubkey_r;
80 if (pubkey == NULL) {
81 wpa_printf(MSG_DEBUG, "WPS: Peer DH public key not available");
82 return -1;
83 }
84
85 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH Private Key", wps->dh_privkey);
86 wpa_hexdump_buf(MSG_DEBUG, "WPS: DH peer Public Key", pubkey);
87 dh_shared = dh5_derive_shared(wps->dh_ctx, pubkey, wps->dh_privkey);
88 dh5_free(wps->dh_ctx);
89 wps->dh_ctx = NULL;
90 dh_shared = wpabuf_zeropad(dh_shared, 192);
91 if (dh_shared == NULL) {
92 wpa_printf(MSG_DEBUG, "WPS: Failed to derive DH shared key");
93 return -1;
94 }
95
96 /* Own DH private key is not needed anymore */
97 wpabuf_free(wps->dh_privkey);
98 wps->dh_privkey = NULL;
99
100 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH shared key", dh_shared);
101
102 /* DHKey = SHA-256(g^AB mod p) */
103 addr[0] = wpabuf_head(dh_shared);
104 len[0] = wpabuf_len(dh_shared);
105 sha256_vector(1, addr, len, dhkey);
106 wpa_hexdump_key(MSG_DEBUG, "WPS: DHKey", dhkey, sizeof(dhkey));
107 wpabuf_free(dh_shared);
108
109 /* KDK = HMAC-SHA-256_DHKey(N1 || EnrolleeMAC || N2) */
110 addr[0] = wps->nonce_e;
111 len[0] = WPS_NONCE_LEN;
112 addr[1] = wps->mac_addr_e;
113 len[1] = ETH_ALEN;
114 addr[2] = wps->nonce_r;
115 len[2] = WPS_NONCE_LEN;
116 hmac_sha256_vector(dhkey, sizeof(dhkey), 3, addr, len, kdk);
117 wpa_hexdump_key(MSG_DEBUG, "WPS: KDK", kdk, sizeof(kdk));
118
119 wps_kdf(kdk, NULL, 0, "Wi-Fi Easy and Secure Key Derivation",
120 keys, sizeof(keys));
121 os_memcpy(wps->authkey, keys, WPS_AUTHKEY_LEN);
122 os_memcpy(wps->keywrapkey, keys + WPS_AUTHKEY_LEN, WPS_KEYWRAPKEY_LEN);
123 os_memcpy(wps->emsk, keys + WPS_AUTHKEY_LEN + WPS_KEYWRAPKEY_LEN,
124 WPS_EMSK_LEN);
125
126 wpa_hexdump_key(MSG_DEBUG, "WPS: AuthKey",
127 wps->authkey, WPS_AUTHKEY_LEN);
128 wpa_hexdump_key(MSG_DEBUG, "WPS: KeyWrapKey",
129 wps->keywrapkey, WPS_KEYWRAPKEY_LEN);
130 wpa_hexdump_key(MSG_DEBUG, "WPS: EMSK", wps->emsk, WPS_EMSK_LEN);
131
132 return 0;
133 }
134
135
wps_derive_psk(struct wps_data * wps,const u8 * dev_passwd,size_t dev_passwd_len)136 void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd,
137 size_t dev_passwd_len)
138 {
139 u8 hash[SHA256_MAC_LEN];
140
141 hmac_sha256(wps->authkey, WPS_AUTHKEY_LEN, dev_passwd,
142 (dev_passwd_len + 1) / 2, hash);
143 os_memcpy(wps->psk1, hash, WPS_PSK_LEN);
144 hmac_sha256(wps->authkey, WPS_AUTHKEY_LEN,
145 dev_passwd + (dev_passwd_len + 1) / 2,
146 dev_passwd_len / 2, hash);
147 os_memcpy(wps->psk2, hash, WPS_PSK_LEN);
148
149 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Device Password",
150 dev_passwd, dev_passwd_len);
151 wpa_hexdump_key(MSG_DEBUG, "WPS: PSK1", wps->psk1, WPS_PSK_LEN);
152 wpa_hexdump_key(MSG_DEBUG, "WPS: PSK2", wps->psk2, WPS_PSK_LEN);
153 }
154
155
wps_decrypt_encr_settings(struct wps_data * wps,const u8 * encr,size_t encr_len)156 struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr,
157 size_t encr_len)
158 {
159 struct wpabuf *decrypted;
160 const size_t block_size = 16;
161 size_t i;
162 u8 pad;
163 const u8 *pos;
164
165 /* AES-128-CBC */
166 if (encr == NULL || encr_len < 2 * block_size || encr_len % block_size)
167 {
168 wpa_printf(MSG_DEBUG, "WPS: No Encrypted Settings received");
169 return NULL;
170 }
171
172 decrypted = wpabuf_alloc(encr_len - block_size);
173 if (decrypted == NULL)
174 return NULL;
175
176 wpa_hexdump(MSG_MSGDUMP, "WPS: Encrypted Settings", encr, encr_len);
177 wpabuf_put_data(decrypted, encr + block_size, encr_len - block_size);
178 if (aes_128_cbc_decrypt(wps->keywrapkey, encr, wpabuf_mhead(decrypted),
179 wpabuf_len(decrypted))) {
180 wpabuf_free(decrypted);
181 return NULL;
182 }
183
184 wpa_hexdump_buf_key(MSG_MSGDUMP, "WPS: Decrypted Encrypted Settings",
185 decrypted);
186
187 pos = wpabuf_head_u8(decrypted) + wpabuf_len(decrypted) - 1;
188 pad = *pos;
189 if (pad > wpabuf_len(decrypted)) {
190 wpa_printf(MSG_DEBUG, "WPS: Invalid PKCS#5 v2.0 pad value");
191 wpabuf_free(decrypted);
192 return NULL;
193 }
194 for (i = 0; i < pad; i++) {
195 if (*pos-- != pad) {
196 wpa_printf(MSG_DEBUG, "WPS: Invalid PKCS#5 v2.0 pad "
197 "string");
198 wpabuf_free(decrypted);
199 return NULL;
200 }
201 }
202 decrypted->used -= pad;
203
204 return decrypted;
205 }
206
207
208 /**
209 * wps_pin_checksum - Compute PIN checksum
210 * @pin: Seven digit PIN (i.e., eight digit PIN without the checksum digit)
211 * Returns: Checksum digit
212 */
wps_pin_checksum(unsigned int pin)213 unsigned int wps_pin_checksum(unsigned int pin)
214 {
215 unsigned int accum = 0;
216 while (pin) {
217 accum += 3 * (pin % 10);
218 pin /= 10;
219 accum += pin % 10;
220 pin /= 10;
221 }
222
223 return (10 - accum % 10) % 10;
224 }
225
226
227 /**
228 * wps_pin_valid - Check whether a PIN has a valid checksum
229 * @pin: Eight digit PIN (i.e., including the checksum digit)
230 * Returns: 1 if checksum digit is valid, or 0 if not
231 */
wps_pin_valid(unsigned int pin)232 unsigned int wps_pin_valid(unsigned int pin)
233 {
234 return wps_pin_checksum(pin / 10) == (pin % 10);
235 }
236
237
238 /**
239 * wps_generate_pin - Generate a random PIN
240 * Returns: Eight digit PIN (i.e., including the checksum digit)
241 */
wps_generate_pin(void)242 unsigned int wps_generate_pin(void)
243 {
244 unsigned int val;
245
246 /* Generate seven random digits for the PIN */
247 if (random_get_bytes((unsigned char *) &val, sizeof(val)) < 0) {
248 struct os_time now;
249 os_get_time(&now);
250 val = os_random() ^ now.sec ^ now.usec;
251 }
252 val %= 10000000;
253
254 /* Append checksum digit */
255 return val * 10 + wps_pin_checksum(val);
256 }
257
258
wps_fail_event(struct wps_context * wps,enum wps_msg_type msg,u16 config_error,u16 error_indication)259 void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg,
260 u16 config_error, u16 error_indication)
261 {
262 union wps_event_data data;
263
264 if (wps->event_cb == NULL)
265 return;
266
267 os_memset(&data, 0, sizeof(data));
268 data.fail.msg = msg;
269 data.fail.config_error = config_error;
270 data.fail.error_indication = error_indication;
271 wps->event_cb(wps->cb_ctx, WPS_EV_FAIL, &data);
272 }
273
274
wps_success_event(struct wps_context * wps)275 void wps_success_event(struct wps_context *wps)
276 {
277 if (wps->event_cb == NULL)
278 return;
279
280 wps->event_cb(wps->cb_ctx, WPS_EV_SUCCESS, NULL);
281 }
282
283
wps_pwd_auth_fail_event(struct wps_context * wps,int enrollee,int part)284 void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part)
285 {
286 union wps_event_data data;
287
288 if (wps->event_cb == NULL)
289 return;
290
291 os_memset(&data, 0, sizeof(data));
292 data.pwd_auth_fail.enrollee = enrollee;
293 data.pwd_auth_fail.part = part;
294 wps->event_cb(wps->cb_ctx, WPS_EV_PWD_AUTH_FAIL, &data);
295 }
296
297
wps_pbc_overlap_event(struct wps_context * wps)298 void wps_pbc_overlap_event(struct wps_context *wps)
299 {
300 if (wps->event_cb == NULL)
301 return;
302
303 wps->event_cb(wps->cb_ctx, WPS_EV_PBC_OVERLAP, NULL);
304 }
305
306
wps_pbc_timeout_event(struct wps_context * wps)307 void wps_pbc_timeout_event(struct wps_context *wps)
308 {
309 if (wps->event_cb == NULL)
310 return;
311
312 wps->event_cb(wps->cb_ctx, WPS_EV_PBC_TIMEOUT, NULL);
313 }
314
315
316 #ifdef CONFIG_WPS_OOB
317
wps_get_oob_cred(struct wps_context * wps)318 static struct wpabuf * wps_get_oob_cred(struct wps_context *wps)
319 {
320 struct wps_data data;
321 struct wpabuf *plain;
322
323 plain = wpabuf_alloc(500);
324 if (plain == NULL) {
325 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
326 "credential");
327 return NULL;
328 }
329
330 os_memset(&data, 0, sizeof(data));
331 data.wps = wps;
332 data.auth_type = wps->auth_types;
333 data.encr_type = wps->encr_types;
334 if (wps_build_version(plain) ||
335 wps_build_cred(&data, plain) ||
336 wps_build_wfa_ext(plain, 0, NULL, 0)) {
337 wpabuf_free(plain);
338 return NULL;
339 }
340
341 return plain;
342 }
343
344
wps_get_oob_dev_pwd(struct wps_context * wps)345 static struct wpabuf * wps_get_oob_dev_pwd(struct wps_context *wps)
346 {
347 struct wpabuf *data;
348
349 data = wpabuf_alloc(9 + WPS_OOB_DEVICE_PASSWORD_ATTR_LEN);
350 if (data == NULL) {
351 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
352 "device password attribute");
353 return NULL;
354 }
355
356 wpabuf_free(wps->oob_conf.dev_password);
357 wps->oob_conf.dev_password =
358 wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1);
359 if (wps->oob_conf.dev_password == NULL) {
360 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
361 "device password");
362 wpabuf_free(data);
363 return NULL;
364 }
365
366 if (wps_build_version(data) ||
367 wps_build_oob_dev_password(data, wps) ||
368 wps_build_wfa_ext(data, 0, NULL, 0)) {
369 wpa_printf(MSG_ERROR, "WPS: Build OOB device password "
370 "attribute error");
371 wpabuf_free(data);
372 return NULL;
373 }
374
375 return data;
376 }
377
378
wps_parse_oob_dev_pwd(struct wps_context * wps,struct wpabuf * data)379 static int wps_parse_oob_dev_pwd(struct wps_context *wps,
380 struct wpabuf *data)
381 {
382 struct oob_conf_data *oob_conf = &wps->oob_conf;
383 struct wps_parse_attr attr;
384 const u8 *pos;
385
386 if (wps_parse_msg(data, &attr) < 0 ||
387 attr.oob_dev_password == NULL) {
388 wpa_printf(MSG_ERROR, "WPS: OOB device password not found");
389 return -1;
390 }
391
392 pos = attr.oob_dev_password;
393
394 oob_conf->pubkey_hash =
395 wpabuf_alloc_copy(pos, WPS_OOB_PUBKEY_HASH_LEN);
396 if (oob_conf->pubkey_hash == NULL) {
397 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
398 "public key hash");
399 return -1;
400 }
401 pos += WPS_OOB_PUBKEY_HASH_LEN;
402
403 wps->oob_dev_pw_id = WPA_GET_BE16(pos);
404 pos += sizeof(wps->oob_dev_pw_id);
405
406 oob_conf->dev_password =
407 wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1);
408 if (oob_conf->dev_password == NULL) {
409 wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
410 "device password");
411 return -1;
412 }
413 wpa_snprintf_hex_uppercase(wpabuf_put(oob_conf->dev_password,
414 wpabuf_size(oob_conf->dev_password)),
415 wpabuf_size(oob_conf->dev_password), pos,
416 WPS_OOB_DEVICE_PASSWORD_LEN);
417
418 return 0;
419 }
420
421
wps_parse_oob_cred(struct wps_context * wps,struct wpabuf * data)422 static int wps_parse_oob_cred(struct wps_context *wps, struct wpabuf *data)
423 {
424 struct wpabuf msg;
425 struct wps_parse_attr attr;
426 size_t i;
427
428 if (wps_parse_msg(data, &attr) < 0 || attr.num_cred <= 0) {
429 wpa_printf(MSG_ERROR, "WPS: OOB credential not found");
430 return -1;
431 }
432
433 for (i = 0; i < attr.num_cred; i++) {
434 struct wps_credential local_cred;
435 struct wps_parse_attr cattr;
436
437 os_memset(&local_cred, 0, sizeof(local_cred));
438 wpabuf_set(&msg, attr.cred[i], attr.cred_len[i]);
439 if (wps_parse_msg(&msg, &cattr) < 0 ||
440 wps_process_cred(&cattr, &local_cred)) {
441 wpa_printf(MSG_ERROR, "WPS: Failed to parse OOB "
442 "credential");
443 return -1;
444 }
445 wps->cred_cb(wps->cb_ctx, &local_cred);
446 }
447
448 return 0;
449 }
450
451
wps_process_oob(struct wps_context * wps,struct oob_device_data * oob_dev,int registrar)452 int wps_process_oob(struct wps_context *wps, struct oob_device_data *oob_dev,
453 int registrar)
454 {
455 struct wpabuf *data;
456 int ret, write_f, oob_method = wps->oob_conf.oob_method;
457 void *oob_priv;
458
459 write_f = oob_method == OOB_METHOD_DEV_PWD_E ? !registrar : registrar;
460
461 oob_priv = oob_dev->init_func(wps, oob_dev, registrar);
462 if (oob_priv == NULL) {
463 wpa_printf(MSG_ERROR, "WPS: Failed to initialize OOB device");
464 return -1;
465 }
466
467 if (write_f) {
468 if (oob_method == OOB_METHOD_CRED)
469 data = wps_get_oob_cred(wps);
470 else
471 data = wps_get_oob_dev_pwd(wps);
472
473 ret = 0;
474 if (data == NULL || oob_dev->write_func(oob_priv, data) < 0)
475 ret = -1;
476 } else {
477 data = oob_dev->read_func(oob_priv);
478 if (data == NULL)
479 ret = -1;
480 else {
481 if (oob_method == OOB_METHOD_CRED)
482 ret = wps_parse_oob_cred(wps, data);
483 else
484 ret = wps_parse_oob_dev_pwd(wps, data);
485 }
486 }
487 wpabuf_free(data);
488 oob_dev->deinit_func(oob_priv);
489
490 if (ret < 0) {
491 wpa_printf(MSG_ERROR, "WPS: Failed to process OOB data");
492 return -1;
493 }
494
495 return 0;
496 }
497
498
wps_get_oob_device(char * device_type)499 struct oob_device_data * wps_get_oob_device(char *device_type)
500 {
501 #ifdef CONFIG_WPS_UFD
502 if (os_strstr(device_type, "ufd") != NULL)
503 return &oob_ufd_device_data;
504 #endif /* CONFIG_WPS_UFD */
505 #ifdef CONFIG_WPS_NFC
506 if (os_strstr(device_type, "nfc") != NULL)
507 return &oob_nfc_device_data;
508 #endif /* CONFIG_WPS_NFC */
509
510 return NULL;
511 }
512
513
514 #ifdef CONFIG_WPS_NFC
wps_get_oob_nfc_device(char * device_name)515 struct oob_nfc_device_data * wps_get_oob_nfc_device(char *device_name)
516 {
517 if (device_name == NULL)
518 return NULL;
519 #ifdef CONFIG_WPS_NFC_PN531
520 if (os_strstr(device_name, "pn531") != NULL)
521 return &oob_nfc_pn531_device_data;
522 #endif /* CONFIG_WPS_NFC_PN531 */
523
524 return NULL;
525 }
526 #endif /* CONFIG_WPS_NFC */
527
528
wps_get_oob_method(char * method)529 int wps_get_oob_method(char *method)
530 {
531 if (os_strstr(method, "pin-e") != NULL)
532 return OOB_METHOD_DEV_PWD_E;
533 if (os_strstr(method, "pin-r") != NULL)
534 return OOB_METHOD_DEV_PWD_R;
535 if (os_strstr(method, "cred") != NULL)
536 return OOB_METHOD_CRED;
537 return OOB_METHOD_UNKNOWN;
538 }
539
540 #endif /* CONFIG_WPS_OOB */
541
542
wps_dev_type_str2bin(const char * str,u8 dev_type[WPS_DEV_TYPE_LEN])543 int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN])
544 {
545 const char *pos;
546
547 /* <categ>-<OUI>-<subcateg> */
548 WPA_PUT_BE16(dev_type, atoi(str));
549 pos = os_strchr(str, '-');
550 if (pos == NULL)
551 return -1;
552 pos++;
553 if (hexstr2bin(pos, &dev_type[2], 4))
554 return -1;
555 pos = os_strchr(pos, '-');
556 if (pos == NULL)
557 return -1;
558 pos++;
559 WPA_PUT_BE16(&dev_type[6], atoi(pos));
560
561
562 return 0;
563 }
564
565
wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN],char * buf,size_t buf_len)566 char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
567 size_t buf_len)
568 {
569 int ret;
570
571 ret = os_snprintf(buf, buf_len, "%u-%08X-%u",
572 WPA_GET_BE16(dev_type), WPA_GET_BE32(&dev_type[2]),
573 WPA_GET_BE16(&dev_type[6]));
574 if (ret < 0 || (unsigned int) ret >= buf_len)
575 return NULL;
576
577 return buf;
578 }
579
580
uuid_gen_mac_addr(const u8 * mac_addr,u8 * uuid)581 void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid)
582 {
583 const u8 *addr[2];
584 size_t len[2];
585 u8 hash[SHA1_MAC_LEN];
586 u8 nsid[16] = {
587 0x52, 0x64, 0x80, 0xf8,
588 0xc9, 0x9b,
589 0x4b, 0xe5,
590 0xa6, 0x55,
591 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84
592 };
593
594 addr[0] = nsid;
595 len[0] = sizeof(nsid);
596 addr[1] = mac_addr;
597 len[1] = 6;
598 sha1_vector(2, addr, len, hash);
599 os_memcpy(uuid, hash, 16);
600
601 /* Version: 5 = named-based version using SHA-1 */
602 uuid[6] = (5 << 4) | (uuid[6] & 0x0f);
603
604 /* Variant specified in RFC 4122 */
605 uuid[8] = 0x80 | (uuid[8] & 0x3f);
606 }
607
608
wps_config_methods_str2bin(const char * str)609 u16 wps_config_methods_str2bin(const char *str)
610 {
611 u16 methods = 0;
612
613 if (str == NULL) {
614 /* Default to enabling methods based on build configuration */
615 methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
616 #ifdef CONFIG_WPS2
617 methods |= WPS_CONFIG_VIRT_DISPLAY;
618 #endif /* CONFIG_WPS2 */
619 #ifdef CONFIG_WPS_UFD
620 methods |= WPS_CONFIG_USBA;
621 #endif /* CONFIG_WPS_UFD */
622 #ifdef CONFIG_WPS_NFC
623 methods |= WPS_CONFIG_NFC_INTERFACE;
624 #endif /* CONFIG_WPS_NFC */
625 } else {
626 if (os_strstr(str, "usba"))
627 methods |= WPS_CONFIG_USBA;
628 if (os_strstr(str, "ethernet"))
629 methods |= WPS_CONFIG_ETHERNET;
630 if (os_strstr(str, "label"))
631 methods |= WPS_CONFIG_LABEL;
632 if (os_strstr(str, "display"))
633 methods |= WPS_CONFIG_DISPLAY;
634 if (os_strstr(str, "ext_nfc_token"))
635 methods |= WPS_CONFIG_EXT_NFC_TOKEN;
636 if (os_strstr(str, "int_nfc_token"))
637 methods |= WPS_CONFIG_INT_NFC_TOKEN;
638 if (os_strstr(str, "nfc_interface"))
639 methods |= WPS_CONFIG_NFC_INTERFACE;
640 if (os_strstr(str, "push_button"))
641 methods |= WPS_CONFIG_PUSHBUTTON;
642 if (os_strstr(str, "keypad"))
643 methods |= WPS_CONFIG_KEYPAD;
644 #ifdef CONFIG_WPS2
645 if (os_strstr(str, "virtual_display"))
646 methods |= WPS_CONFIG_VIRT_DISPLAY;
647 if (os_strstr(str, "physical_display"))
648 methods |= WPS_CONFIG_PHY_DISPLAY;
649 if (os_strstr(str, "virtual_push_button"))
650 methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
651 if (os_strstr(str, "physical_push_button"))
652 methods |= WPS_CONFIG_PHY_PUSHBUTTON;
653 #endif /* CONFIG_WPS2 */
654 }
655
656 return methods;
657 }
658
659
wps_build_wsc_ack(struct wps_data * wps)660 struct wpabuf * wps_build_wsc_ack(struct wps_data *wps)
661 {
662 struct wpabuf *msg;
663
664 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_ACK");
665
666 msg = wpabuf_alloc(1000);
667 if (msg == NULL)
668 return NULL;
669
670 if (wps_build_version(msg) ||
671 wps_build_msg_type(msg, WPS_WSC_ACK) ||
672 wps_build_enrollee_nonce(wps, msg) ||
673 wps_build_registrar_nonce(wps, msg) ||
674 wps_build_wfa_ext(msg, 0, NULL, 0)) {
675 wpabuf_free(msg);
676 return NULL;
677 }
678
679 return msg;
680 }
681
682
wps_build_wsc_nack(struct wps_data * wps)683 struct wpabuf * wps_build_wsc_nack(struct wps_data *wps)
684 {
685 struct wpabuf *msg;
686
687 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_NACK");
688
689 msg = wpabuf_alloc(1000);
690 if (msg == NULL)
691 return NULL;
692
693 if (wps_build_version(msg) ||
694 wps_build_msg_type(msg, WPS_WSC_NACK) ||
695 wps_build_enrollee_nonce(wps, msg) ||
696 wps_build_registrar_nonce(wps, msg) ||
697 wps_build_config_error(msg, wps->config_error) ||
698 wps_build_wfa_ext(msg, 0, NULL, 0)) {
699 wpabuf_free(msg);
700 return NULL;
701 }
702
703 return msg;
704 }
705