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1 /*
2  * TLS interface functions and an internal TLS implementation
3  * Copyright (c) 2004-2011, 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  * This file interface functions for hostapd/wpa_supplicant to use the
9  * integrated TLSv1 implementation.
10  */
11 
12 #include "includes.h"
13 
14 #include "common.h"
15 #include "tls.h"
16 #include "tls/tlsv1_client.h"
17 #include "tls/tlsv1_server.h"
18 
19 
20 static int tls_ref_count = 0;
21 
22 struct tls_global {
23 	int server;
24 	struct tlsv1_credentials *server_cred;
25 	int check_crl;
26 
27 	void (*event_cb)(void *ctx, enum tls_event ev,
28 			 union tls_event_data *data);
29 	void *cb_ctx;
30 	int cert_in_cb;
31 };
32 
33 struct tls_connection {
34 	struct tlsv1_client *client;
35 	struct tlsv1_server *server;
36 	struct tls_global *global;
37 };
38 
39 
tls_init(const struct tls_config * conf)40 void * tls_init(const struct tls_config *conf)
41 {
42 	struct tls_global *global;
43 
44 	if (tls_ref_count == 0) {
45 #ifdef CONFIG_TLS_INTERNAL_CLIENT
46 		if (tlsv1_client_global_init())
47 			return NULL;
48 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
49 #ifdef CONFIG_TLS_INTERNAL_SERVER
50 		if (tlsv1_server_global_init())
51 			return NULL;
52 #endif /* CONFIG_TLS_INTERNAL_SERVER */
53 	}
54 	tls_ref_count++;
55 
56 	global = os_zalloc(sizeof(*global));
57 	if (global == NULL)
58 		return NULL;
59 	if (conf) {
60 		global->event_cb = conf->event_cb;
61 		global->cb_ctx = conf->cb_ctx;
62 		global->cert_in_cb = conf->cert_in_cb;
63 	}
64 
65 	return global;
66 }
67 
tls_deinit(void * ssl_ctx)68 void tls_deinit(void *ssl_ctx)
69 {
70 	struct tls_global *global = ssl_ctx;
71 	tls_ref_count--;
72 	if (tls_ref_count == 0) {
73 #ifdef CONFIG_TLS_INTERNAL_CLIENT
74 		tlsv1_client_global_deinit();
75 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
76 #ifdef CONFIG_TLS_INTERNAL_SERVER
77 		tlsv1_server_global_deinit();
78 #endif /* CONFIG_TLS_INTERNAL_SERVER */
79 	}
80 #ifdef CONFIG_TLS_INTERNAL_SERVER
81 	tlsv1_cred_free(global->server_cred);
82 #endif /* CONFIG_TLS_INTERNAL_SERVER */
83 	os_free(global);
84 }
85 
86 
tls_get_errors(void * tls_ctx)87 int tls_get_errors(void *tls_ctx)
88 {
89 	return 0;
90 }
91 
92 
tls_connection_init(void * tls_ctx)93 struct tls_connection * tls_connection_init(void *tls_ctx)
94 {
95 	struct tls_connection *conn;
96 	struct tls_global *global = tls_ctx;
97 
98 	conn = os_zalloc(sizeof(*conn));
99 	if (conn == NULL)
100 		return NULL;
101 	conn->global = global;
102 
103 #ifdef CONFIG_TLS_INTERNAL_CLIENT
104 	if (!global->server) {
105 		conn->client = tlsv1_client_init();
106 		if (conn->client == NULL) {
107 			os_free(conn);
108 			return NULL;
109 		}
110 		tlsv1_client_set_cb(conn->client, global->event_cb,
111 				    global->cb_ctx, global->cert_in_cb);
112 	}
113 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
114 #ifdef CONFIG_TLS_INTERNAL_SERVER
115 	if (global->server) {
116 		conn->server = tlsv1_server_init(global->server_cred);
117 		if (conn->server == NULL) {
118 			os_free(conn);
119 			return NULL;
120 		}
121 	}
122 #endif /* CONFIG_TLS_INTERNAL_SERVER */
123 
124 	return conn;
125 }
126 
127 
128 #ifdef CONFIG_TESTING_OPTIONS
129 #ifdef CONFIG_TLS_INTERNAL_SERVER
tls_connection_set_test_flags(struct tls_connection * conn,u32 flags)130 void tls_connection_set_test_flags(struct tls_connection *conn, u32 flags)
131 {
132 	if (conn->server)
133 		tlsv1_server_set_test_flags(conn->server, flags);
134 }
135 #endif /* CONFIG_TLS_INTERNAL_SERVER */
136 #endif /* CONFIG_TESTING_OPTIONS */
137 
138 
tls_connection_set_log_cb(struct tls_connection * conn,void (* log_cb)(void * ctx,const char * msg),void * ctx)139 void tls_connection_set_log_cb(struct tls_connection *conn,
140 			       void (*log_cb)(void *ctx, const char *msg),
141 			       void *ctx)
142 {
143 #ifdef CONFIG_TLS_INTERNAL_SERVER
144 	if (conn->server)
145 		tlsv1_server_set_log_cb(conn->server, log_cb, ctx);
146 #endif /* CONFIG_TLS_INTERNAL_SERVER */
147 }
148 
149 
tls_connection_deinit(void * tls_ctx,struct tls_connection * conn)150 void tls_connection_deinit(void *tls_ctx, struct tls_connection *conn)
151 {
152 	if (conn == NULL)
153 		return;
154 #ifdef CONFIG_TLS_INTERNAL_CLIENT
155 	if (conn->client)
156 		tlsv1_client_deinit(conn->client);
157 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
158 #ifdef CONFIG_TLS_INTERNAL_SERVER
159 	if (conn->server)
160 		tlsv1_server_deinit(conn->server);
161 #endif /* CONFIG_TLS_INTERNAL_SERVER */
162 	os_free(conn);
163 }
164 
165 
tls_connection_established(void * tls_ctx,struct tls_connection * conn)166 int tls_connection_established(void *tls_ctx, struct tls_connection *conn)
167 {
168 #ifdef CONFIG_TLS_INTERNAL_CLIENT
169 	if (conn->client)
170 		return tlsv1_client_established(conn->client);
171 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
172 #ifdef CONFIG_TLS_INTERNAL_SERVER
173 	if (conn->server)
174 		return tlsv1_server_established(conn->server);
175 #endif /* CONFIG_TLS_INTERNAL_SERVER */
176 	return 0;
177 }
178 
179 
tls_connection_shutdown(void * tls_ctx,struct tls_connection * conn)180 int tls_connection_shutdown(void *tls_ctx, struct tls_connection *conn)
181 {
182 #ifdef CONFIG_TLS_INTERNAL_CLIENT
183 	if (conn->client)
184 		return tlsv1_client_shutdown(conn->client);
185 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
186 #ifdef CONFIG_TLS_INTERNAL_SERVER
187 	if (conn->server)
188 		return tlsv1_server_shutdown(conn->server);
189 #endif /* CONFIG_TLS_INTERNAL_SERVER */
190 	return -1;
191 }
192 
193 
tls_connection_set_params(void * tls_ctx,struct tls_connection * conn,const struct tls_connection_params * params)194 int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
195 			      const struct tls_connection_params *params)
196 {
197 #ifdef CONFIG_TLS_INTERNAL_CLIENT
198 	struct tlsv1_credentials *cred;
199 
200 	if (conn->client == NULL)
201 		return -1;
202 
203 	if (params->flags & TLS_CONN_EXT_CERT_CHECK) {
204 		wpa_printf(MSG_INFO,
205 			   "TLS: tls_ext_cert_check=1 not supported");
206 		return -1;
207 	}
208 
209 	cred = tlsv1_cred_alloc();
210 	if (cred == NULL)
211 		return -1;
212 
213 	if (params->subject_match) {
214 		wpa_printf(MSG_INFO, "TLS: subject_match not supported");
215 		tlsv1_cred_free(cred);
216 		return -1;
217 	}
218 
219 	if (params->altsubject_match) {
220 		wpa_printf(MSG_INFO, "TLS: altsubject_match not supported");
221 		tlsv1_cred_free(cred);
222 		return -1;
223 	}
224 
225 	if (params->suffix_match) {
226 		wpa_printf(MSG_INFO, "TLS: suffix_match not supported");
227 		tlsv1_cred_free(cred);
228 		return -1;
229 	}
230 
231 	if (params->domain_match) {
232 		wpa_printf(MSG_INFO, "TLS: domain_match not supported");
233 		tlsv1_cred_free(cred);
234 		return -1;
235 	}
236 
237 	if (params->openssl_ciphers) {
238 		wpa_printf(MSG_INFO, "TLS: openssl_ciphers not supported");
239 		tlsv1_cred_free(cred);
240 		return -1;
241 	}
242 
243 	if (tlsv1_set_ca_cert(cred, params->ca_cert,
244 			      params->ca_cert_blob, params->ca_cert_blob_len,
245 			      params->ca_path)) {
246 		wpa_printf(MSG_INFO, "TLS: Failed to configure trusted CA "
247 			   "certificates");
248 		tlsv1_cred_free(cred);
249 		return -1;
250 	}
251 
252 	if (tlsv1_set_cert(cred, params->client_cert,
253 			   params->client_cert_blob,
254 			   params->client_cert_blob_len)) {
255 		wpa_printf(MSG_INFO, "TLS: Failed to configure client "
256 			   "certificate");
257 		tlsv1_cred_free(cred);
258 		return -1;
259 	}
260 
261 	if (tlsv1_set_private_key(cred, params->private_key,
262 				  params->private_key_passwd,
263 				  params->private_key_blob,
264 				  params->private_key_blob_len)) {
265 		wpa_printf(MSG_INFO, "TLS: Failed to load private key");
266 		tlsv1_cred_free(cred);
267 		return -1;
268 	}
269 
270 	if (tlsv1_set_dhparams(cred, params->dh_file, params->dh_blob,
271 			       params->dh_blob_len)) {
272 		wpa_printf(MSG_INFO, "TLS: Failed to load DH parameters");
273 		tlsv1_cred_free(cred);
274 		return -1;
275 	}
276 
277 	if (tlsv1_client_set_cred(conn->client, cred) < 0) {
278 		tlsv1_cred_free(cred);
279 		return -1;
280 	}
281 
282 	tlsv1_client_set_flags(conn->client, params->flags);
283 
284 	return 0;
285 #else /* CONFIG_TLS_INTERNAL_CLIENT */
286 	return -1;
287 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
288 }
289 
290 
tls_global_set_params(void * tls_ctx,const struct tls_connection_params * params)291 int tls_global_set_params(void *tls_ctx,
292 			  const struct tls_connection_params *params)
293 {
294 #ifdef CONFIG_TLS_INTERNAL_SERVER
295 	struct tls_global *global = tls_ctx;
296 	struct tlsv1_credentials *cred;
297 
298 	/* Currently, global parameters are only set when running in server
299 	 * mode. */
300 	global->server = 1;
301 	tlsv1_cred_free(global->server_cred);
302 	global->server_cred = cred = tlsv1_cred_alloc();
303 	if (cred == NULL)
304 		return -1;
305 
306 	if (tlsv1_set_ca_cert(cred, params->ca_cert, params->ca_cert_blob,
307 			      params->ca_cert_blob_len, params->ca_path)) {
308 		wpa_printf(MSG_INFO, "TLS: Failed to configure trusted CA "
309 			   "certificates");
310 		return -1;
311 	}
312 
313 	if (tlsv1_set_cert(cred, params->client_cert, params->client_cert_blob,
314 			   params->client_cert_blob_len)) {
315 		wpa_printf(MSG_INFO, "TLS: Failed to configure server "
316 			   "certificate");
317 		return -1;
318 	}
319 
320 	if (tlsv1_set_private_key(cred, params->private_key,
321 				  params->private_key_passwd,
322 				  params->private_key_blob,
323 				  params->private_key_blob_len)) {
324 		wpa_printf(MSG_INFO, "TLS: Failed to load private key");
325 		return -1;
326 	}
327 
328 	if (tlsv1_set_dhparams(cred, params->dh_file, params->dh_blob,
329 			       params->dh_blob_len)) {
330 		wpa_printf(MSG_INFO, "TLS: Failed to load DH parameters");
331 		return -1;
332 	}
333 
334 	if (params->ocsp_stapling_response)
335 		cred->ocsp_stapling_response =
336 			os_strdup(params->ocsp_stapling_response);
337 	if (params->ocsp_stapling_response_multi)
338 		cred->ocsp_stapling_response_multi =
339 			os_strdup(params->ocsp_stapling_response_multi);
340 
341 	return 0;
342 #else /* CONFIG_TLS_INTERNAL_SERVER */
343 	return -1;
344 #endif /* CONFIG_TLS_INTERNAL_SERVER */
345 }
346 
347 
tls_global_set_verify(void * tls_ctx,int check_crl)348 int tls_global_set_verify(void *tls_ctx, int check_crl)
349 {
350 	struct tls_global *global = tls_ctx;
351 	global->check_crl = check_crl;
352 	return 0;
353 }
354 
355 
tls_connection_set_verify(void * tls_ctx,struct tls_connection * conn,int verify_peer,unsigned int flags,const u8 * session_ctx,size_t session_ctx_len)356 int tls_connection_set_verify(void *tls_ctx, struct tls_connection *conn,
357 			      int verify_peer, unsigned int flags,
358 			      const u8 *session_ctx, size_t session_ctx_len)
359 {
360 #ifdef CONFIG_TLS_INTERNAL_SERVER
361 	if (conn->server)
362 		return tlsv1_server_set_verify(conn->server, verify_peer);
363 #endif /* CONFIG_TLS_INTERNAL_SERVER */
364 	return -1;
365 }
366 
367 
tls_connection_get_random(void * tls_ctx,struct tls_connection * conn,struct tls_random * data)368 int tls_connection_get_random(void *tls_ctx, struct tls_connection *conn,
369 			      struct tls_random *data)
370 {
371 #ifdef CONFIG_TLS_INTERNAL_CLIENT
372 	if (conn->client)
373 		return tlsv1_client_get_random(conn->client, data);
374 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
375 #ifdef CONFIG_TLS_INTERNAL_SERVER
376 	if (conn->server)
377 		return tlsv1_server_get_random(conn->server, data);
378 #endif /* CONFIG_TLS_INTERNAL_SERVER */
379 	return -1;
380 }
381 
382 
tls_get_keyblock_size(struct tls_connection * conn)383 static int tls_get_keyblock_size(struct tls_connection *conn)
384 {
385 #ifdef CONFIG_TLS_INTERNAL_CLIENT
386 	if (conn->client)
387 		return tlsv1_client_get_keyblock_size(conn->client);
388 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
389 #ifdef CONFIG_TLS_INTERNAL_SERVER
390 	if (conn->server)
391 		return tlsv1_server_get_keyblock_size(conn->server);
392 #endif /* CONFIG_TLS_INTERNAL_SERVER */
393 	return -1;
394 }
395 
396 
tls_connection_prf(void * tls_ctx,struct tls_connection * conn,const char * label,int server_random_first,int skip_keyblock,u8 * out,size_t out_len)397 static int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
398 			      const char *label, int server_random_first,
399 			      int skip_keyblock, u8 *out, size_t out_len)
400 {
401 	int ret = -1, skip = 0;
402 	u8 *tmp_out = NULL;
403 	u8 *_out = out;
404 
405 	if (skip_keyblock) {
406 		skip = tls_get_keyblock_size(conn);
407 		if (skip < 0)
408 			return -1;
409 		tmp_out = os_malloc(skip + out_len);
410 		if (!tmp_out)
411 			return -1;
412 		_out = tmp_out;
413 	}
414 
415 #ifdef CONFIG_TLS_INTERNAL_CLIENT
416 	if (conn->client) {
417 		ret = tlsv1_client_prf(conn->client, label,
418 				       server_random_first,
419 				       _out, skip + out_len);
420 	}
421 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
422 #ifdef CONFIG_TLS_INTERNAL_SERVER
423 	if (conn->server) {
424 		ret = tlsv1_server_prf(conn->server, label,
425 				       server_random_first,
426 				       _out, skip + out_len);
427 	}
428 #endif /* CONFIG_TLS_INTERNAL_SERVER */
429 	if (ret == 0 && skip_keyblock)
430 		os_memcpy(out, _out + skip, out_len);
431 	bin_clear_free(tmp_out, skip);
432 
433 	return ret;
434 }
435 
436 
tls_connection_export_key(void * tls_ctx,struct tls_connection * conn,const char * label,u8 * out,size_t out_len)437 int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn,
438 			      const char *label, u8 *out, size_t out_len)
439 {
440 	return tls_connection_prf(tls_ctx, conn, label, 0, 0, out, out_len);
441 }
442 
443 
tls_connection_get_eap_fast_key(void * tls_ctx,struct tls_connection * conn,u8 * out,size_t out_len)444 int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn,
445 				    u8 *out, size_t out_len)
446 {
447 	return tls_connection_prf(tls_ctx, conn, "key expansion", 1, 1, out,
448 				  out_len);
449 }
450 
451 
tls_connection_handshake(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data,struct wpabuf ** appl_data)452 struct wpabuf * tls_connection_handshake(void *tls_ctx,
453 					 struct tls_connection *conn,
454 					 const struct wpabuf *in_data,
455 					 struct wpabuf **appl_data)
456 {
457 	return tls_connection_handshake2(tls_ctx, conn, in_data, appl_data,
458 					 NULL);
459 }
460 
461 
tls_connection_handshake2(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data,struct wpabuf ** appl_data,int * need_more_data)462 struct wpabuf * tls_connection_handshake2(void *tls_ctx,
463 					  struct tls_connection *conn,
464 					  const struct wpabuf *in_data,
465 					  struct wpabuf **appl_data,
466 					  int *need_more_data)
467 {
468 #ifdef CONFIG_TLS_INTERNAL_CLIENT
469 	u8 *res, *ad;
470 	size_t res_len, ad_len;
471 	struct wpabuf *out;
472 
473 	if (conn->client == NULL)
474 		return NULL;
475 
476 	ad = NULL;
477 	res = tlsv1_client_handshake(conn->client,
478 				     in_data ? wpabuf_head(in_data) : NULL,
479 				     in_data ? wpabuf_len(in_data) : 0,
480 				     &res_len, &ad, &ad_len, need_more_data);
481 	if (res == NULL)
482 		return NULL;
483 	out = wpabuf_alloc_ext_data(res, res_len);
484 	if (out == NULL) {
485 		os_free(res);
486 		os_free(ad);
487 		return NULL;
488 	}
489 	if (appl_data) {
490 		if (ad) {
491 			*appl_data = wpabuf_alloc_ext_data(ad, ad_len);
492 			if (*appl_data == NULL)
493 				os_free(ad);
494 		} else
495 			*appl_data = NULL;
496 	} else
497 		os_free(ad);
498 
499 	return out;
500 #else /* CONFIG_TLS_INTERNAL_CLIENT */
501 	return NULL;
502 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
503 }
504 
505 
tls_connection_server_handshake(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data,struct wpabuf ** appl_data)506 struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
507 						struct tls_connection *conn,
508 						const struct wpabuf *in_data,
509 						struct wpabuf **appl_data)
510 {
511 #ifdef CONFIG_TLS_INTERNAL_SERVER
512 	u8 *res;
513 	size_t res_len;
514 	struct wpabuf *out;
515 
516 	if (conn->server == NULL)
517 		return NULL;
518 
519 	if (appl_data)
520 		*appl_data = NULL;
521 
522 	res = tlsv1_server_handshake(conn->server, wpabuf_head(in_data),
523 				     wpabuf_len(in_data), &res_len);
524 	if (res == NULL && tlsv1_server_established(conn->server))
525 		return wpabuf_alloc(0);
526 	if (res == NULL)
527 		return NULL;
528 	out = wpabuf_alloc_ext_data(res, res_len);
529 	if (out == NULL) {
530 		os_free(res);
531 		return NULL;
532 	}
533 
534 	return out;
535 #else /* CONFIG_TLS_INTERNAL_SERVER */
536 	return NULL;
537 #endif /* CONFIG_TLS_INTERNAL_SERVER */
538 }
539 
540 
tls_connection_encrypt(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data)541 struct wpabuf * tls_connection_encrypt(void *tls_ctx,
542 				       struct tls_connection *conn,
543 				       const struct wpabuf *in_data)
544 {
545 #ifdef CONFIG_TLS_INTERNAL_CLIENT
546 	if (conn->client) {
547 		struct wpabuf *buf;
548 		int res;
549 		buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
550 		if (buf == NULL)
551 			return NULL;
552 		res = tlsv1_client_encrypt(conn->client, wpabuf_head(in_data),
553 					   wpabuf_len(in_data),
554 					   wpabuf_mhead(buf),
555 					   wpabuf_size(buf));
556 		if (res < 0) {
557 			wpabuf_free(buf);
558 			return NULL;
559 		}
560 		wpabuf_put(buf, res);
561 		return buf;
562 	}
563 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
564 #ifdef CONFIG_TLS_INTERNAL_SERVER
565 	if (conn->server) {
566 		struct wpabuf *buf;
567 		int res;
568 		buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
569 		if (buf == NULL)
570 			return NULL;
571 		res = tlsv1_server_encrypt(conn->server, wpabuf_head(in_data),
572 					   wpabuf_len(in_data),
573 					   wpabuf_mhead(buf),
574 					   wpabuf_size(buf));
575 		if (res < 0) {
576 			wpabuf_free(buf);
577 			return NULL;
578 		}
579 		wpabuf_put(buf, res);
580 		return buf;
581 	}
582 #endif /* CONFIG_TLS_INTERNAL_SERVER */
583 	return NULL;
584 }
585 
586 
tls_connection_decrypt(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data)587 struct wpabuf * tls_connection_decrypt(void *tls_ctx,
588 				       struct tls_connection *conn,
589 				       const struct wpabuf *in_data)
590 {
591 	return tls_connection_decrypt2(tls_ctx, conn, in_data, NULL);
592 }
593 
594 
tls_connection_decrypt2(void * tls_ctx,struct tls_connection * conn,const struct wpabuf * in_data,int * need_more_data)595 struct wpabuf * tls_connection_decrypt2(void *tls_ctx,
596 					struct tls_connection *conn,
597 					const struct wpabuf *in_data,
598 					int *need_more_data)
599 {
600 	if (need_more_data)
601 		*need_more_data = 0;
602 
603 #ifdef CONFIG_TLS_INTERNAL_CLIENT
604 	if (conn->client) {
605 		return tlsv1_client_decrypt(conn->client, wpabuf_head(in_data),
606 					    wpabuf_len(in_data),
607 					    need_more_data);
608 	}
609 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
610 #ifdef CONFIG_TLS_INTERNAL_SERVER
611 	if (conn->server) {
612 		struct wpabuf *buf;
613 		int res;
614 		buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
615 		if (buf == NULL)
616 			return NULL;
617 		res = tlsv1_server_decrypt(conn->server, wpabuf_head(in_data),
618 					   wpabuf_len(in_data),
619 					   wpabuf_mhead(buf),
620 					   wpabuf_size(buf));
621 		if (res < 0) {
622 			wpabuf_free(buf);
623 			return NULL;
624 		}
625 		wpabuf_put(buf, res);
626 		return buf;
627 	}
628 #endif /* CONFIG_TLS_INTERNAL_SERVER */
629 	return NULL;
630 }
631 
632 
tls_connection_resumed(void * tls_ctx,struct tls_connection * conn)633 int tls_connection_resumed(void *tls_ctx, struct tls_connection *conn)
634 {
635 #ifdef CONFIG_TLS_INTERNAL_CLIENT
636 	if (conn->client)
637 		return tlsv1_client_resumed(conn->client);
638 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
639 #ifdef CONFIG_TLS_INTERNAL_SERVER
640 	if (conn->server)
641 		return tlsv1_server_resumed(conn->server);
642 #endif /* CONFIG_TLS_INTERNAL_SERVER */
643 	return -1;
644 }
645 
646 
tls_connection_set_cipher_list(void * tls_ctx,struct tls_connection * conn,u8 * ciphers)647 int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
648 				   u8 *ciphers)
649 {
650 #ifdef CONFIG_TLS_INTERNAL_CLIENT
651 	if (conn->client)
652 		return tlsv1_client_set_cipher_list(conn->client, ciphers);
653 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
654 #ifdef CONFIG_TLS_INTERNAL_SERVER
655 	if (conn->server)
656 		return tlsv1_server_set_cipher_list(conn->server, ciphers);
657 #endif /* CONFIG_TLS_INTERNAL_SERVER */
658 	return -1;
659 }
660 
661 
tls_get_version(void * ssl_ctx,struct tls_connection * conn,char * buf,size_t buflen)662 int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
663 		    char *buf, size_t buflen)
664 {
665 	if (conn == NULL)
666 		return -1;
667 #ifdef CONFIG_TLS_INTERNAL_CLIENT
668 	if (conn->client)
669 		return tlsv1_client_get_version(conn->client, buf, buflen);
670 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
671 	return -1;
672 }
673 
674 
tls_get_cipher(void * tls_ctx,struct tls_connection * conn,char * buf,size_t buflen)675 int tls_get_cipher(void *tls_ctx, struct tls_connection *conn,
676 		   char *buf, size_t buflen)
677 {
678 	if (conn == NULL)
679 		return -1;
680 #ifdef CONFIG_TLS_INTERNAL_CLIENT
681 	if (conn->client)
682 		return tlsv1_client_get_cipher(conn->client, buf, buflen);
683 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
684 #ifdef CONFIG_TLS_INTERNAL_SERVER
685 	if (conn->server)
686 		return tlsv1_server_get_cipher(conn->server, buf, buflen);
687 #endif /* CONFIG_TLS_INTERNAL_SERVER */
688 	return -1;
689 }
690 
691 
tls_connection_enable_workaround(void * tls_ctx,struct tls_connection * conn)692 int tls_connection_enable_workaround(void *tls_ctx,
693 				     struct tls_connection *conn)
694 {
695 	return -1;
696 }
697 
698 
tls_connection_client_hello_ext(void * tls_ctx,struct tls_connection * conn,int ext_type,const u8 * data,size_t data_len)699 int tls_connection_client_hello_ext(void *tls_ctx, struct tls_connection *conn,
700 				    int ext_type, const u8 *data,
701 				    size_t data_len)
702 {
703 #ifdef CONFIG_TLS_INTERNAL_CLIENT
704 	if (conn->client) {
705 		return tlsv1_client_hello_ext(conn->client, ext_type,
706 					      data, data_len);
707 	}
708 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
709 	return -1;
710 }
711 
712 
tls_connection_get_failed(void * tls_ctx,struct tls_connection * conn)713 int tls_connection_get_failed(void *tls_ctx, struct tls_connection *conn)
714 {
715 	return 0;
716 }
717 
718 
tls_connection_get_read_alerts(void * tls_ctx,struct tls_connection * conn)719 int tls_connection_get_read_alerts(void *tls_ctx, struct tls_connection *conn)
720 {
721 	return 0;
722 }
723 
724 
tls_connection_get_write_alerts(void * tls_ctx,struct tls_connection * conn)725 int tls_connection_get_write_alerts(void *tls_ctx,
726 				    struct tls_connection *conn)
727 {
728 	return 0;
729 }
730 
731 
tls_connection_set_session_ticket_cb(void * tls_ctx,struct tls_connection * conn,tls_session_ticket_cb cb,void * ctx)732 int tls_connection_set_session_ticket_cb(void *tls_ctx,
733 					 struct tls_connection *conn,
734 					 tls_session_ticket_cb cb,
735 					 void *ctx)
736 {
737 #ifdef CONFIG_TLS_INTERNAL_CLIENT
738 	if (conn->client) {
739 		tlsv1_client_set_session_ticket_cb(conn->client, cb, ctx);
740 		return 0;
741 	}
742 #endif /* CONFIG_TLS_INTERNAL_CLIENT */
743 #ifdef CONFIG_TLS_INTERNAL_SERVER
744 	if (conn->server) {
745 		tlsv1_server_set_session_ticket_cb(conn->server, cb, ctx);
746 		return 0;
747 	}
748 #endif /* CONFIG_TLS_INTERNAL_SERVER */
749 	return -1;
750 }
751 
752 
tls_get_library_version(char * buf,size_t buf_len)753 int tls_get_library_version(char *buf, size_t buf_len)
754 {
755 	return os_snprintf(buf, buf_len, "internal");
756 }
757 
758 
tls_connection_set_success_data(struct tls_connection * conn,struct wpabuf * data)759 void tls_connection_set_success_data(struct tls_connection *conn,
760 				     struct wpabuf *data)
761 {
762 }
763 
764 
tls_connection_set_success_data_resumed(struct tls_connection * conn)765 void tls_connection_set_success_data_resumed(struct tls_connection *conn)
766 {
767 }
768 
769 
770 const struct wpabuf *
tls_connection_get_success_data(struct tls_connection * conn)771 tls_connection_get_success_data(struct tls_connection *conn)
772 {
773 	return NULL;
774 }
775 
776 
tls_connection_remove_session(struct tls_connection * conn)777 void tls_connection_remove_session(struct tls_connection *conn)
778 {
779 }
780