Line data Source code
1 : /*
2 : * Wi-Fi Protected Setup - attribute building
3 : * Copyright (c) 2008-2016, 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 "crypto/aes_wrap.h"
13 : #include "crypto/crypto.h"
14 : #include "crypto/dh_group5.h"
15 : #include "crypto/sha256.h"
16 : #include "crypto/random.h"
17 : #include "common/ieee802_11_defs.h"
18 : #include "wps_i.h"
19 :
20 :
21 1001 : int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg)
22 : {
23 1001 : struct wpabuf *pubkey = NULL;
24 :
25 1001 : wpa_printf(MSG_DEBUG, "WPS: * Public Key");
26 1001 : wpabuf_clear_free(wps->dh_privkey);
27 1001 : wps->dh_privkey = NULL;
28 1175 : if (wps->dev_pw_id != DEV_PW_DEFAULT && wps->wps->dh_privkey &&
29 174 : wps->wps->dh_ctx) {
30 46 : wpa_printf(MSG_DEBUG, "WPS: Using pre-configured DH keys");
31 46 : if (wps->wps->dh_pubkey == NULL) {
32 0 : wpa_printf(MSG_DEBUG,
33 : "WPS: wps->wps->dh_pubkey == NULL");
34 0 : return -1;
35 : }
36 46 : wps->dh_privkey = wpabuf_dup(wps->wps->dh_privkey);
37 46 : wps->dh_ctx = wps->wps->dh_ctx;
38 46 : wps->wps->dh_ctx = NULL;
39 46 : pubkey = wpabuf_dup(wps->wps->dh_pubkey);
40 : #ifdef CONFIG_WPS_NFC
41 1903 : } else if ((wps->dev_pw_id >= 0x10 ||
42 964 : wps->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) &&
43 20 : (wps->wps->ap ||
44 6 : (wps->wps->ap_nfc_dh_pubkey &&
45 2 : wps->wps->ap_nfc_dev_pw_id ==
46 2 : DEV_PW_NFC_CONNECTION_HANDOVER &&
47 16 : wps->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)) &&
48 17 : (wps->dev_pw_id == wps->wps->ap_nfc_dev_pw_id ||
49 3 : wps->wps->ap_nfc_dh_pubkey)) {
50 12 : wpa_printf(MSG_DEBUG, "WPS: Using NFC password token DH keys");
51 12 : if (wps->wps->ap_nfc_dh_privkey == NULL) {
52 0 : wpa_printf(MSG_DEBUG,
53 : "WPS: wps->wps->ap_nfc_dh_privkey == NULL");
54 0 : return -1;
55 : }
56 12 : if (wps->wps->ap_nfc_dh_pubkey == NULL) {
57 0 : wpa_printf(MSG_DEBUG,
58 : "WPS: wps->wps->ap_nfc_dh_pubkey == NULL");
59 0 : return -1;
60 : }
61 12 : wps->dh_privkey = wpabuf_dup(wps->wps->ap_nfc_dh_privkey);
62 12 : pubkey = wpabuf_dup(wps->wps->ap_nfc_dh_pubkey);
63 12 : wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, pubkey);
64 : #endif /* CONFIG_WPS_NFC */
65 : } else {
66 943 : wpa_printf(MSG_DEBUG, "WPS: Generate new DH keys");
67 943 : dh5_free(wps->dh_ctx);
68 943 : wps->dh_ctx = dh5_init(&wps->dh_privkey, &pubkey);
69 943 : pubkey = wpabuf_zeropad(pubkey, 192);
70 : }
71 1001 : if (wps->dh_ctx == NULL || wps->dh_privkey == NULL || pubkey == NULL) {
72 2 : wpa_printf(MSG_DEBUG, "WPS: Failed to initialize "
73 : "Diffie-Hellman handshake");
74 2 : wpabuf_free(pubkey);
75 2 : return -1;
76 : }
77 999 : wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH Private Key", wps->dh_privkey);
78 999 : wpa_hexdump_buf(MSG_DEBUG, "WPS: DH own Public Key", pubkey);
79 :
80 999 : wpabuf_put_be16(msg, ATTR_PUBLIC_KEY);
81 999 : wpabuf_put_be16(msg, wpabuf_len(pubkey));
82 999 : wpabuf_put_buf(msg, pubkey);
83 :
84 999 : if (wps->registrar) {
85 458 : wpabuf_free(wps->dh_pubkey_r);
86 458 : wps->dh_pubkey_r = pubkey;
87 : } else {
88 541 : wpabuf_free(wps->dh_pubkey_e);
89 541 : wps->dh_pubkey_e = pubkey;
90 : }
91 :
92 999 : return 0;
93 : }
94 :
95 :
96 6114 : int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type)
97 : {
98 6114 : wpa_printf(MSG_DEBUG, "WPS: * Request Type");
99 6114 : wpabuf_put_be16(msg, ATTR_REQUEST_TYPE);
100 6114 : wpabuf_put_be16(msg, 1);
101 6114 : wpabuf_put_u8(msg, type);
102 6114 : return 0;
103 : }
104 :
105 :
106 5256 : int wps_build_resp_type(struct wpabuf *msg, enum wps_response_type type)
107 : {
108 5256 : wpa_printf(MSG_DEBUG, "WPS: * Response Type (%d)", type);
109 5256 : wpabuf_put_be16(msg, ATTR_RESPONSE_TYPE);
110 5256 : wpabuf_put_be16(msg, 1);
111 5256 : wpabuf_put_u8(msg, type);
112 5256 : return 0;
113 : }
114 :
115 :
116 6615 : int wps_build_config_methods(struct wpabuf *msg, u16 methods)
117 : {
118 6615 : wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
119 6615 : wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
120 6615 : wpabuf_put_be16(msg, 2);
121 6615 : wpabuf_put_be16(msg, methods);
122 6615 : return 0;
123 : }
124 :
125 :
126 11188 : int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid)
127 : {
128 11188 : if (wpabuf_tailroom(msg) < 4 + WPS_UUID_LEN)
129 0 : return -1;
130 11188 : wpa_printf(MSG_DEBUG, "WPS: * UUID-E");
131 11188 : wpabuf_put_be16(msg, ATTR_UUID_E);
132 11188 : wpabuf_put_be16(msg, WPS_UUID_LEN);
133 11188 : wpabuf_put_data(msg, uuid, WPS_UUID_LEN);
134 11188 : return 0;
135 : }
136 :
137 :
138 6576 : int wps_build_dev_password_id(struct wpabuf *msg, u16 id)
139 : {
140 6576 : wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
141 6576 : wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
142 6576 : wpabuf_put_be16(msg, 2);
143 6576 : wpabuf_put_be16(msg, id);
144 6576 : return 0;
145 : }
146 :
147 :
148 6760 : int wps_build_config_error(struct wpabuf *msg, u16 err)
149 : {
150 6760 : wpa_printf(MSG_DEBUG, "WPS: * Configuration Error (%d)", err);
151 6760 : wpabuf_put_be16(msg, ATTR_CONFIG_ERROR);
152 6760 : wpabuf_put_be16(msg, 2);
153 6760 : wpabuf_put_be16(msg, err);
154 6760 : return 0;
155 : }
156 :
157 :
158 2701 : int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg)
159 : {
160 : u8 hash[SHA256_MAC_LEN];
161 : const u8 *addr[2];
162 : size_t len[2];
163 :
164 2701 : if (wps->last_msg == NULL) {
165 0 : wpa_printf(MSG_DEBUG, "WPS: Last message not available for "
166 : "building authenticator");
167 0 : return -1;
168 : }
169 :
170 : /* Authenticator = HMAC-SHA256_AuthKey(M_prev || M_curr*)
171 : * (M_curr* is M_curr without the Authenticator attribute)
172 : */
173 2701 : addr[0] = wpabuf_head(wps->last_msg);
174 2701 : len[0] = wpabuf_len(wps->last_msg);
175 2701 : addr[1] = wpabuf_head(msg);
176 2701 : len[1] = wpabuf_len(msg);
177 2701 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 2, addr, len, hash);
178 :
179 2701 : wpa_printf(MSG_DEBUG, "WPS: * Authenticator");
180 2701 : wpabuf_put_be16(msg, ATTR_AUTHENTICATOR);
181 2701 : wpabuf_put_be16(msg, WPS_AUTHENTICATOR_LEN);
182 2701 : wpabuf_put_data(msg, hash, WPS_AUTHENTICATOR_LEN);
183 :
184 2701 : return 0;
185 : }
186 :
187 :
188 20839 : int wps_build_version(struct wpabuf *msg)
189 : {
190 : /*
191 : * Note: This attribute is deprecated and set to hardcoded 0x10 for
192 : * backwards compatibility reasons. The real version negotiation is
193 : * done with Version2.
194 : */
195 20839 : if (wpabuf_tailroom(msg) < 5)
196 0 : return -1;
197 20839 : wpa_printf(MSG_DEBUG, "WPS: * Version (hardcoded 0x10)");
198 20839 : wpabuf_put_be16(msg, ATTR_VERSION);
199 20839 : wpabuf_put_be16(msg, 1);
200 20839 : wpabuf_put_u8(msg, 0x10);
201 20839 : return 0;
202 : }
203 :
204 :
205 20911 : int wps_build_wfa_ext(struct wpabuf *msg, int req_to_enroll,
206 : const u8 *auth_macs, size_t auth_macs_count)
207 : {
208 : u8 *len;
209 :
210 : #ifdef CONFIG_WPS_TESTING
211 20911 : if (WPS_VERSION == 0x10)
212 49 : return 0;
213 : #endif /* CONFIG_WPS_TESTING */
214 :
215 41724 : if (wpabuf_tailroom(msg) <
216 41724 : 7 + 3 + (req_to_enroll ? 3 : 0) +
217 20862 : (auth_macs ? 2 + auth_macs_count * ETH_ALEN : 0))
218 0 : return -1;
219 20862 : wpabuf_put_be16(msg, ATTR_VENDOR_EXT);
220 20862 : len = wpabuf_put(msg, 2); /* to be filled */
221 20862 : wpabuf_put_be24(msg, WPS_VENDOR_ID_WFA);
222 :
223 20862 : wpa_printf(MSG_DEBUG, "WPS: * Version2 (0x%x)", WPS_VERSION);
224 20862 : wpabuf_put_u8(msg, WFA_ELEM_VERSION2);
225 20862 : wpabuf_put_u8(msg, 1);
226 20862 : wpabuf_put_u8(msg, WPS_VERSION);
227 :
228 20862 : if (req_to_enroll) {
229 1675 : wpa_printf(MSG_DEBUG, "WPS: * Request to Enroll (1)");
230 1675 : wpabuf_put_u8(msg, WFA_ELEM_REQUEST_TO_ENROLL);
231 1675 : wpabuf_put_u8(msg, 1);
232 1675 : wpabuf_put_u8(msg, 1);
233 : }
234 :
235 20862 : if (auth_macs && auth_macs_count) {
236 : size_t i;
237 1074 : wpa_printf(MSG_DEBUG, "WPS: * AuthorizedMACs (count=%d)",
238 : (int) auth_macs_count);
239 1074 : wpabuf_put_u8(msg, WFA_ELEM_AUTHORIZEDMACS);
240 1074 : wpabuf_put_u8(msg, auth_macs_count * ETH_ALEN);
241 1074 : wpabuf_put_data(msg, auth_macs, auth_macs_count * ETH_ALEN);
242 2165 : for (i = 0; i < auth_macs_count; i++)
243 6546 : wpa_printf(MSG_DEBUG, "WPS: AuthorizedMAC: " MACSTR,
244 6546 : MAC2STR(&auth_macs[i * ETH_ALEN]));
245 : }
246 :
247 20862 : WPA_PUT_BE16(len, (u8 *) wpabuf_put(msg, 0) - len - 2);
248 :
249 : #ifdef CONFIG_WPS_TESTING
250 20862 : if (WPS_VERSION > 0x20) {
251 21 : if (wpabuf_tailroom(msg) < 5)
252 0 : return -1;
253 21 : wpa_printf(MSG_DEBUG, "WPS: * Extensibility Testing - extra "
254 : "attribute");
255 21 : wpabuf_put_be16(msg, ATTR_EXTENSIBILITY_TEST);
256 21 : wpabuf_put_be16(msg, 1);
257 21 : wpabuf_put_u8(msg, 42);
258 : }
259 : #endif /* CONFIG_WPS_TESTING */
260 20862 : return 0;
261 : }
262 :
263 :
264 3800 : int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type)
265 : {
266 3800 : wpa_printf(MSG_DEBUG, "WPS: * Message Type (%d)", msg_type);
267 3800 : wpabuf_put_be16(msg, ATTR_MSG_TYPE);
268 3800 : wpabuf_put_be16(msg, 1);
269 3800 : wpabuf_put_u8(msg, msg_type);
270 3800 : return 0;
271 : }
272 :
273 :
274 2612 : int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg)
275 : {
276 2612 : wpa_printf(MSG_DEBUG, "WPS: * Enrollee Nonce");
277 2612 : wpabuf_put_be16(msg, ATTR_ENROLLEE_NONCE);
278 2612 : wpabuf_put_be16(msg, WPS_NONCE_LEN);
279 2612 : wpabuf_put_data(msg, wps->nonce_e, WPS_NONCE_LEN);
280 2612 : return 0;
281 : }
282 :
283 :
284 2181 : int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg)
285 : {
286 2181 : wpa_printf(MSG_DEBUG, "WPS: * Registrar Nonce");
287 2181 : wpabuf_put_be16(msg, ATTR_REGISTRAR_NONCE);
288 2181 : wpabuf_put_be16(msg, WPS_NONCE_LEN);
289 2181 : wpabuf_put_data(msg, wps->nonce_r, WPS_NONCE_LEN);
290 2181 : return 0;
291 : }
292 :
293 :
294 1038 : int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg)
295 : {
296 1038 : u16 auth_types = WPS_AUTH_TYPES;
297 : /* WPA/WPA2-Enterprise enrollment not supported through WPS */
298 1038 : auth_types &= ~WPS_AUTH_WPA;
299 1038 : auth_types &= ~WPS_AUTH_WPA2;
300 1038 : auth_types &= ~WPS_AUTH_SHARED;
301 : #ifdef CONFIG_WPS_TESTING
302 1038 : if (wps_force_auth_types_in_use) {
303 2 : wpa_printf(MSG_DEBUG,
304 : "WPS: Testing - replace auth type 0x%x with 0x%x",
305 : auth_types, wps_force_auth_types);
306 2 : auth_types = wps_force_auth_types;
307 : }
308 : #endif /* CONFIG_WPS_TESTING */
309 1038 : wpa_printf(MSG_DEBUG, "WPS: * Authentication Type Flags (0x%x)",
310 : auth_types);
311 1038 : wpabuf_put_be16(msg, ATTR_AUTH_TYPE_FLAGS);
312 1038 : wpabuf_put_be16(msg, 2);
313 1038 : wpabuf_put_be16(msg, auth_types);
314 1038 : return 0;
315 : }
316 :
317 :
318 1038 : int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg)
319 : {
320 1038 : u16 encr_types = WPS_ENCR_TYPES;
321 1038 : encr_types &= ~WPS_ENCR_WEP;
322 : #ifdef CONFIG_WPS_TESTING
323 1038 : if (wps_force_encr_types_in_use) {
324 1 : wpa_printf(MSG_DEBUG,
325 : "WPS: Testing - replace encr type 0x%x with 0x%x",
326 : encr_types, wps_force_encr_types);
327 1 : encr_types = wps_force_encr_types;
328 : }
329 : #endif /* CONFIG_WPS_TESTING */
330 1038 : wpa_printf(MSG_DEBUG, "WPS: * Encryption Type Flags (0x%x)",
331 : encr_types);
332 1038 : wpabuf_put_be16(msg, ATTR_ENCR_TYPE_FLAGS);
333 1038 : wpabuf_put_be16(msg, 2);
334 1038 : wpabuf_put_be16(msg, encr_types);
335 1038 : return 0;
336 : }
337 :
338 :
339 1038 : int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg)
340 : {
341 1038 : wpa_printf(MSG_DEBUG, "WPS: * Connection Type Flags");
342 1038 : wpabuf_put_be16(msg, ATTR_CONN_TYPE_FLAGS);
343 1038 : wpabuf_put_be16(msg, 1);
344 1038 : wpabuf_put_u8(msg, WPS_CONN_ESS);
345 1038 : return 0;
346 : }
347 :
348 :
349 6615 : int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg)
350 : {
351 6615 : wpa_printf(MSG_DEBUG, "WPS: * Association State");
352 6615 : wpabuf_put_be16(msg, ATTR_ASSOC_STATE);
353 6615 : wpabuf_put_be16(msg, 2);
354 6615 : wpabuf_put_be16(msg, WPS_ASSOC_NOT_ASSOC);
355 6615 : return 0;
356 : }
357 :
358 :
359 1834 : int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg)
360 : {
361 : u8 hash[SHA256_MAC_LEN];
362 :
363 1834 : wpa_printf(MSG_DEBUG, "WPS: * Key Wrap Authenticator");
364 1834 : hmac_sha256(wps->authkey, WPS_AUTHKEY_LEN, wpabuf_head(msg),
365 : wpabuf_len(msg), hash);
366 :
367 1834 : wpabuf_put_be16(msg, ATTR_KEY_WRAP_AUTH);
368 1834 : wpabuf_put_be16(msg, WPS_KWA_LEN);
369 1834 : wpabuf_put_data(msg, hash, WPS_KWA_LEN);
370 1834 : return 0;
371 : }
372 :
373 :
374 1834 : int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg,
375 : struct wpabuf *plain)
376 : {
377 : size_t pad_len;
378 1834 : const size_t block_size = 16;
379 : u8 *iv, *data;
380 :
381 1834 : wpa_printf(MSG_DEBUG, "WPS: * Encrypted Settings");
382 :
383 : /* PKCS#5 v2.0 pad */
384 1834 : pad_len = block_size - wpabuf_len(plain) % block_size;
385 1834 : os_memset(wpabuf_put(plain, pad_len), pad_len, pad_len);
386 :
387 1834 : wpabuf_put_be16(msg, ATTR_ENCR_SETTINGS);
388 1834 : wpabuf_put_be16(msg, block_size + wpabuf_len(plain));
389 :
390 1834 : iv = wpabuf_put(msg, block_size);
391 1834 : if (random_get_bytes(iv, block_size) < 0)
392 3 : return -1;
393 :
394 1831 : data = wpabuf_put(msg, 0);
395 1831 : wpabuf_put_buf(msg, plain);
396 1831 : if (aes_128_cbc_encrypt(wps->keywrapkey, iv, data, wpabuf_len(plain)))
397 0 : return -1;
398 :
399 1831 : return 0;
400 : }
401 :
402 :
403 : #ifdef CONFIG_WPS_OOB
404 79 : int wps_build_oob_dev_pw(struct wpabuf *msg, u16 dev_pw_id,
405 : const struct wpabuf *pubkey, const u8 *dev_pw,
406 : size_t dev_pw_len)
407 : {
408 : size_t hash_len;
409 : const u8 *addr[1];
410 : u8 pubkey_hash[WPS_HASH_LEN];
411 :
412 79 : wpa_printf(MSG_DEBUG, "WPS: * OOB Device Password (dev_pw_id=%u)",
413 : dev_pw_id);
414 79 : addr[0] = wpabuf_head(pubkey);
415 79 : hash_len = wpabuf_len(pubkey);
416 79 : if (sha256_vector(1, addr, &hash_len, pubkey_hash) < 0)
417 2 : return -1;
418 : #ifdef CONFIG_WPS_TESTING
419 77 : if (wps_corrupt_pkhash) {
420 4 : wpa_hexdump(MSG_DEBUG, "WPS: Real Public Key Hash",
421 : pubkey_hash, WPS_OOB_PUBKEY_HASH_LEN);
422 4 : wpa_printf(MSG_INFO, "WPS: Testing - corrupt public key hash");
423 4 : pubkey_hash[WPS_OOB_PUBKEY_HASH_LEN - 2]++;
424 : }
425 : #endif /* CONFIG_WPS_TESTING */
426 :
427 77 : wpabuf_put_be16(msg, ATTR_OOB_DEVICE_PASSWORD);
428 77 : wpabuf_put_be16(msg, WPS_OOB_PUBKEY_HASH_LEN + 2 + dev_pw_len);
429 77 : wpa_hexdump(MSG_DEBUG, "WPS: Public Key Hash",
430 : pubkey_hash, WPS_OOB_PUBKEY_HASH_LEN);
431 77 : wpabuf_put_data(msg, pubkey_hash, WPS_OOB_PUBKEY_HASH_LEN);
432 77 : wpabuf_put_be16(msg, dev_pw_id);
433 77 : if (dev_pw) {
434 30 : wpa_hexdump_key(MSG_DEBUG, "WPS: OOB Device Password",
435 : dev_pw, dev_pw_len);
436 30 : wpabuf_put_data(msg, dev_pw, dev_pw_len);
437 : }
438 :
439 77 : return 0;
440 : }
441 : #endif /* CONFIG_WPS_OOB */
442 :
443 :
444 : /* Encapsulate WPS IE data with one (or more, if needed) IE headers */
445 9265 : struct wpabuf * wps_ie_encapsulate(struct wpabuf *data)
446 : {
447 : struct wpabuf *ie;
448 : const u8 *pos, *end;
449 :
450 9265 : ie = wpabuf_alloc(wpabuf_len(data) + 100);
451 9265 : if (ie == NULL) {
452 1 : wpabuf_free(data);
453 1 : return NULL;
454 : }
455 :
456 9264 : pos = wpabuf_head(data);
457 9264 : end = pos + wpabuf_len(data);
458 :
459 27795 : while (end > pos) {
460 9267 : size_t frag_len = end - pos;
461 9267 : if (frag_len > 251)
462 3 : frag_len = 251;
463 9267 : wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
464 9267 : wpabuf_put_u8(ie, 4 + frag_len);
465 9267 : wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
466 9267 : wpabuf_put_data(ie, pos, frag_len);
467 9267 : pos += frag_len;
468 : }
469 :
470 9264 : wpabuf_free(data);
471 :
472 9264 : return ie;
473 : }
474 :
475 :
476 926 : int wps_build_mac_addr(struct wpabuf *msg, const u8 *addr)
477 : {
478 5556 : wpa_printf(MSG_DEBUG, "WPS: * MAC Address (" MACSTR ")",
479 5556 : MAC2STR(addr));
480 926 : wpabuf_put_be16(msg, ATTR_MAC_ADDR);
481 926 : wpabuf_put_be16(msg, ETH_ALEN);
482 926 : wpabuf_put_data(msg, addr, ETH_ALEN);
483 926 : return 0;
484 : }
485 :
486 :
487 6713 : int wps_build_rf_bands_attr(struct wpabuf *msg, u8 rf_bands)
488 : {
489 6713 : wpa_printf(MSG_DEBUG, "WPS: * RF Bands (%x)", rf_bands);
490 6713 : wpabuf_put_be16(msg, ATTR_RF_BANDS);
491 6713 : wpabuf_put_be16(msg, 1);
492 6713 : wpabuf_put_u8(msg, rf_bands);
493 6713 : return 0;
494 : }
495 :
496 :
497 12 : int wps_build_ap_channel(struct wpabuf *msg, u16 ap_channel)
498 : {
499 12 : wpa_printf(MSG_DEBUG, "WPS: * AP Channel (%u)", ap_channel);
500 12 : wpabuf_put_be16(msg, ATTR_AP_CHANNEL);
501 12 : wpabuf_put_be16(msg, 2);
502 12 : wpabuf_put_be16(msg, ap_channel);
503 12 : return 0;
504 : }
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