1 /* $OpenBSD: ssl_lib.c,v 1.323 2024/04/15 16:00:05 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
118 *
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121 * license.
122 *
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
126 *
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
130 *
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
135 *
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
140 * OTHERWISE.
141 */
142
143 #include <arpa/inet.h>
144 #include <sys/socket.h>
145 #include <netinet/in.h>
146
147 #include <limits.h>
148 #include <stdio.h>
149
150 #include <openssl/dh.h>
151 #include <openssl/lhash.h>
152 #include <openssl/objects.h>
153 #include <openssl/ocsp.h>
154 #include <openssl/opensslconf.h>
155 #include <openssl/x509v3.h>
156
157 #include "bytestring.h"
158 #include "dtls_local.h"
159 #include "ssl_local.h"
160 #include "ssl_sigalgs.h"
161 #include "ssl_tlsext.h"
162 #include "tls12_internal.h"
163
164 int
SSL_clear(SSL * s)165 SSL_clear(SSL *s)
166 {
167 if (s->method == NULL) {
168 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED);
169 return (0);
170 }
171
172 if (ssl_clear_bad_session(s)) {
173 SSL_SESSION_free(s->session);
174 s->session = NULL;
175 }
176
177 s->error = 0;
178 s->hit = 0;
179 s->shutdown = 0;
180
181 if (s->renegotiate) {
182 SSLerror(s, ERR_R_INTERNAL_ERROR);
183 return (0);
184 }
185
186 s->version = s->method->version;
187 s->client_version = s->version;
188 s->rwstate = SSL_NOTHING;
189 s->rstate = SSL_ST_READ_HEADER;
190
191 tls13_ctx_free(s->tls13);
192 s->tls13 = NULL;
193
194 ssl3_release_init_buffer(s);
195
196 ssl_clear_cipher_state(s);
197
198 s->first_packet = 0;
199
200 /*
201 * Check to see if we were changed into a different method, if
202 * so, revert back if we are not doing session-id reuse.
203 */
204 if (!s->in_handshake && (s->session == NULL) &&
205 (s->method != s->ctx->method)) {
206 s->method->ssl_free(s);
207 s->method = s->ctx->method;
208 if (!s->method->ssl_new(s))
209 return (0);
210 } else
211 s->method->ssl_clear(s);
212
213 return (1);
214 }
215 LSSL_ALIAS(SSL_clear);
216
217 /* Used to change an SSL_CTXs default SSL method type */
218 int
SSL_CTX_set_ssl_version(SSL_CTX * ctx,const SSL_METHOD * meth)219 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
220 {
221 STACK_OF(SSL_CIPHER) *ciphers;
222
223 ctx->method = meth;
224
225 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
226 ctx->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST,
227 ctx->cert);
228 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) {
229 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
230 return (0);
231 }
232 return (1);
233 }
234 LSSL_ALIAS(SSL_CTX_set_ssl_version);
235
236 SSL *
SSL_new(SSL_CTX * ctx)237 SSL_new(SSL_CTX *ctx)
238 {
239 SSL *s;
240 CBS cbs;
241
242 if (ctx == NULL) {
243 SSLerrorx(SSL_R_NULL_SSL_CTX);
244 return (NULL);
245 }
246 if (ctx->method == NULL) {
247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
248 return (NULL);
249 }
250
251 if ((s = calloc(1, sizeof(*s))) == NULL)
252 goto err;
253
254 if ((s->rl = tls12_record_layer_new()) == NULL)
255 goto err;
256
257 s->min_tls_version = ctx->min_tls_version;
258 s->max_tls_version = ctx->max_tls_version;
259 s->min_proto_version = ctx->min_proto_version;
260 s->max_proto_version = ctx->max_proto_version;
261
262 s->options = ctx->options;
263 s->mode = ctx->mode;
264 s->max_cert_list = ctx->max_cert_list;
265 s->num_tickets = ctx->num_tickets;
266
267 if ((s->cert = ssl_cert_dup(ctx->cert)) == NULL)
268 goto err;
269
270 s->read_ahead = ctx->read_ahead;
271 s->msg_callback = ctx->msg_callback;
272 s->msg_callback_arg = ctx->msg_callback_arg;
273 s->verify_mode = ctx->verify_mode;
274 s->sid_ctx_length = ctx->sid_ctx_length;
275 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
276 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
277 s->verify_callback = ctx->default_verify_callback;
278 s->generate_session_id = ctx->generate_session_id;
279
280 s->param = X509_VERIFY_PARAM_new();
281 if (!s->param)
282 goto err;
283 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
284 s->quiet_shutdown = ctx->quiet_shutdown;
285 s->max_send_fragment = ctx->max_send_fragment;
286
287 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
288 s->ctx = ctx;
289 s->tlsext_debug_cb = NULL;
290 s->tlsext_debug_arg = NULL;
291 s->tlsext_ticket_expected = 0;
292 s->tlsext_status_type = -1;
293 s->tlsext_status_expected = 0;
294 s->tlsext_ocsp_ids = NULL;
295 s->tlsext_ocsp_exts = NULL;
296 s->tlsext_ocsp_resp = NULL;
297 s->tlsext_ocsp_resp_len = 0;
298 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
299 s->initial_ctx = ctx;
300
301 if (!tlsext_randomize_build_order(s))
302 goto err;
303
304 if (ctx->tlsext_ecpointformatlist != NULL) {
305 s->tlsext_ecpointformatlist =
306 calloc(ctx->tlsext_ecpointformatlist_length,
307 sizeof(ctx->tlsext_ecpointformatlist[0]));
308 if (s->tlsext_ecpointformatlist == NULL)
309 goto err;
310 memcpy(s->tlsext_ecpointformatlist,
311 ctx->tlsext_ecpointformatlist,
312 ctx->tlsext_ecpointformatlist_length *
313 sizeof(ctx->tlsext_ecpointformatlist[0]));
314 s->tlsext_ecpointformatlist_length =
315 ctx->tlsext_ecpointformatlist_length;
316 }
317 if (ctx->tlsext_supportedgroups != NULL) {
318 s->tlsext_supportedgroups =
319 calloc(ctx->tlsext_supportedgroups_length,
320 sizeof(ctx->tlsext_supportedgroups[0]));
321 if (s->tlsext_supportedgroups == NULL)
322 goto err;
323 memcpy(s->tlsext_supportedgroups,
324 ctx->tlsext_supportedgroups,
325 ctx->tlsext_supportedgroups_length *
326 sizeof(ctx->tlsext_supportedgroups[0]));
327 s->tlsext_supportedgroups_length =
328 ctx->tlsext_supportedgroups_length;
329 }
330
331 CBS_init(&cbs, ctx->alpn_client_proto_list,
332 ctx->alpn_client_proto_list_len);
333 if (!CBS_stow(&cbs, &s->alpn_client_proto_list,
334 &s->alpn_client_proto_list_len))
335 goto err;
336
337 s->verify_result = X509_V_OK;
338
339 s->method = ctx->method;
340 s->quic_method = ctx->quic_method;
341
342 if (!s->method->ssl_new(s))
343 goto err;
344
345 s->references = 1;
346 s->server = ctx->method->server;
347
348 SSL_clear(s);
349
350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
351
352 return (s);
353
354 err:
355 SSL_free(s);
356 SSLerrorx(ERR_R_MALLOC_FAILURE);
357 return (NULL);
358 }
359 LSSL_ALIAS(SSL_new);
360
361 int
SSL_CTX_set_session_id_context(SSL_CTX * ctx,const unsigned char * sid_ctx,unsigned int sid_ctx_len)362 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
363 unsigned int sid_ctx_len)
364 {
365 if (sid_ctx_len > sizeof ctx->sid_ctx) {
366 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
367 return (0);
368 }
369 ctx->sid_ctx_length = sid_ctx_len;
370 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
371
372 return (1);
373 }
374 LSSL_ALIAS(SSL_CTX_set_session_id_context);
375
376 int
SSL_set_session_id_context(SSL * ssl,const unsigned char * sid_ctx,unsigned int sid_ctx_len)377 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
378 unsigned int sid_ctx_len)
379 {
380 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
381 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
382 return (0);
383 }
384 ssl->sid_ctx_length = sid_ctx_len;
385 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
386
387 return (1);
388 }
389 LSSL_ALIAS(SSL_set_session_id_context);
390
391 int
SSL_CTX_set_generate_session_id(SSL_CTX * ctx,GEN_SESSION_CB cb)392 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
393 {
394 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
395 ctx->generate_session_id = cb;
396 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
397 return (1);
398 }
399 LSSL_ALIAS(SSL_CTX_set_generate_session_id);
400
401 int
SSL_set_generate_session_id(SSL * ssl,GEN_SESSION_CB cb)402 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
403 {
404 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
405 ssl->generate_session_id = cb;
406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
407 return (1);
408 }
409 LSSL_ALIAS(SSL_set_generate_session_id);
410
411 int
SSL_has_matching_session_id(const SSL * ssl,const unsigned char * id,unsigned int id_len)412 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
413 unsigned int id_len)
414 {
415 /*
416 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp
417 * shows how we can "construct" a session to give us the desired
418 * check - ie. to find if there's a session in the hash table
419 * that would conflict with any new session built out of this
420 * id/id_len and the ssl_version in use by this SSL.
421 */
422 SSL_SESSION r, *p;
423
424 if (id_len > sizeof r.session_id)
425 return (0);
426
427 r.ssl_version = ssl->version;
428 r.session_id_length = id_len;
429 memcpy(r.session_id, id, id_len);
430
431 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
432 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
433 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
434 return (p != NULL);
435 }
436 LSSL_ALIAS(SSL_has_matching_session_id);
437
438 int
SSL_CTX_set_purpose(SSL_CTX * s,int purpose)439 SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
440 {
441 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
442 }
443 LSSL_ALIAS(SSL_CTX_set_purpose);
444
445 int
SSL_set_purpose(SSL * s,int purpose)446 SSL_set_purpose(SSL *s, int purpose)
447 {
448 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
449 }
450 LSSL_ALIAS(SSL_set_purpose);
451
452 int
SSL_CTX_set_trust(SSL_CTX * s,int trust)453 SSL_CTX_set_trust(SSL_CTX *s, int trust)
454 {
455 return (X509_VERIFY_PARAM_set_trust(s->param, trust));
456 }
457 LSSL_ALIAS(SSL_CTX_set_trust);
458
459 int
SSL_set_trust(SSL * s,int trust)460 SSL_set_trust(SSL *s, int trust)
461 {
462 return (X509_VERIFY_PARAM_set_trust(s->param, trust));
463 }
464 LSSL_ALIAS(SSL_set_trust);
465
466 int
SSL_set1_host(SSL * s,const char * hostname)467 SSL_set1_host(SSL *s, const char *hostname)
468 {
469 struct in_addr ina;
470 struct in6_addr in6a;
471
472 if (hostname != NULL && *hostname != '\0' &&
473 (inet_pton(AF_INET, hostname, &ina) == 1 ||
474 inet_pton(AF_INET6, hostname, &in6a) == 1))
475 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
476 else
477 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
478 }
479 LSSL_ALIAS(SSL_set1_host);
480
481 void
SSL_set_hostflags(SSL * s,unsigned int flags)482 SSL_set_hostflags(SSL *s, unsigned int flags)
483 {
484 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
485 }
486 LSSL_ALIAS(SSL_set_hostflags);
487
488 const char *
SSL_get0_peername(SSL * s)489 SSL_get0_peername(SSL *s)
490 {
491 return X509_VERIFY_PARAM_get0_peername(s->param);
492 }
493 LSSL_ALIAS(SSL_get0_peername);
494
495 X509_VERIFY_PARAM *
SSL_CTX_get0_param(SSL_CTX * ctx)496 SSL_CTX_get0_param(SSL_CTX *ctx)
497 {
498 return (ctx->param);
499 }
500 LSSL_ALIAS(SSL_CTX_get0_param);
501
502 int
SSL_CTX_set1_param(SSL_CTX * ctx,X509_VERIFY_PARAM * vpm)503 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
504 {
505 return (X509_VERIFY_PARAM_set1(ctx->param, vpm));
506 }
507 LSSL_ALIAS(SSL_CTX_set1_param);
508
509 X509_VERIFY_PARAM *
SSL_get0_param(SSL * ssl)510 SSL_get0_param(SSL *ssl)
511 {
512 return (ssl->param);
513 }
514 LSSL_ALIAS(SSL_get0_param);
515
516 int
SSL_set1_param(SSL * ssl,X509_VERIFY_PARAM * vpm)517 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
518 {
519 return (X509_VERIFY_PARAM_set1(ssl->param, vpm));
520 }
521 LSSL_ALIAS(SSL_set1_param);
522
523 void
SSL_free(SSL * s)524 SSL_free(SSL *s)
525 {
526 int i;
527
528 if (s == NULL)
529 return;
530
531 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
532 if (i > 0)
533 return;
534
535 X509_VERIFY_PARAM_free(s->param);
536
537 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
538
539 if (s->bbio != NULL) {
540 /* If the buffering BIO is in place, pop it off */
541 if (s->bbio == s->wbio) {
542 s->wbio = BIO_pop(s->wbio);
543 }
544 BIO_free(s->bbio);
545 s->bbio = NULL;
546 }
547
548 if (s->rbio != s->wbio)
549 BIO_free_all(s->rbio);
550 BIO_free_all(s->wbio);
551
552 tls13_ctx_free(s->tls13);
553
554 ssl3_release_init_buffer(s);
555
556 sk_SSL_CIPHER_free(s->cipher_list);
557 sk_SSL_CIPHER_free(s->cipher_list_tls13);
558
559 /* Make the next call work :-) */
560 if (s->session != NULL) {
561 ssl_clear_bad_session(s);
562 SSL_SESSION_free(s->session);
563 }
564
565 ssl_clear_cipher_state(s);
566
567 ssl_cert_free(s->cert);
568
569 free(s->tlsext_build_order);
570
571 free(s->tlsext_hostname);
572 SSL_CTX_free(s->initial_ctx);
573
574 free(s->tlsext_ecpointformatlist);
575 free(s->tlsext_supportedgroups);
576
577 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
578 X509_EXTENSION_free);
579 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
580 free(s->tlsext_ocsp_resp);
581
582 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
583
584 if (s->method != NULL)
585 s->method->ssl_free(s);
586
587 SSL_CTX_free(s->ctx);
588
589 free(s->alpn_client_proto_list);
590
591 free(s->quic_transport_params);
592
593 #ifndef OPENSSL_NO_SRTP
594 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
595 #endif
596
597 tls12_record_layer_free(s->rl);
598
599 free(s);
600 }
601 LSSL_ALIAS(SSL_free);
602
603 int
SSL_up_ref(SSL * s)604 SSL_up_ref(SSL *s)
605 {
606 return CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL) > 1;
607 }
608 LSSL_ALIAS(SSL_up_ref);
609
610 void
SSL_set_bio(SSL * s,BIO * rbio,BIO * wbio)611 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
612 {
613 /* If the output buffering BIO is still in place, remove it */
614 if (s->bbio != NULL) {
615 if (s->wbio == s->bbio) {
616 s->wbio = BIO_next(s->wbio);
617 BIO_set_next(s->bbio, NULL);
618 }
619 }
620
621 if (s->rbio != rbio && s->rbio != s->wbio)
622 BIO_free_all(s->rbio);
623 if (s->wbio != wbio)
624 BIO_free_all(s->wbio);
625 s->rbio = rbio;
626 s->wbio = wbio;
627 }
628 LSSL_ALIAS(SSL_set_bio);
629
630 BIO *
SSL_get_rbio(const SSL * s)631 SSL_get_rbio(const SSL *s)
632 {
633 return (s->rbio);
634 }
635 LSSL_ALIAS(SSL_get_rbio);
636
637 void
SSL_set0_rbio(SSL * s,BIO * rbio)638 SSL_set0_rbio(SSL *s, BIO *rbio)
639 {
640 BIO_free_all(s->rbio);
641 s->rbio = rbio;
642 }
643 LSSL_ALIAS(SSL_set0_rbio);
644
645 BIO *
SSL_get_wbio(const SSL * s)646 SSL_get_wbio(const SSL *s)
647 {
648 return (s->wbio);
649 }
650 LSSL_ALIAS(SSL_get_wbio);
651
652 int
SSL_get_fd(const SSL * s)653 SSL_get_fd(const SSL *s)
654 {
655 return (SSL_get_rfd(s));
656 }
657 LSSL_ALIAS(SSL_get_fd);
658
659 int
SSL_get_rfd(const SSL * s)660 SSL_get_rfd(const SSL *s)
661 {
662 int ret = -1;
663 BIO *b, *r;
664
665 b = SSL_get_rbio(s);
666 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
667 if (r != NULL)
668 BIO_get_fd(r, &ret);
669 return (ret);
670 }
671 LSSL_ALIAS(SSL_get_rfd);
672
673 int
SSL_get_wfd(const SSL * s)674 SSL_get_wfd(const SSL *s)
675 {
676 int ret = -1;
677 BIO *b, *r;
678
679 b = SSL_get_wbio(s);
680 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
681 if (r != NULL)
682 BIO_get_fd(r, &ret);
683 return (ret);
684 }
685 LSSL_ALIAS(SSL_get_wfd);
686
687 int
SSL_set_fd(SSL * s,int fd)688 SSL_set_fd(SSL *s, int fd)
689 {
690 int ret = 0;
691 BIO *bio = NULL;
692
693 bio = BIO_new(BIO_s_socket());
694
695 if (bio == NULL) {
696 SSLerror(s, ERR_R_BUF_LIB);
697 goto err;
698 }
699 BIO_set_fd(bio, fd, BIO_NOCLOSE);
700 SSL_set_bio(s, bio, bio);
701 ret = 1;
702 err:
703 return (ret);
704 }
705 LSSL_ALIAS(SSL_set_fd);
706
707 int
SSL_set_wfd(SSL * s,int fd)708 SSL_set_wfd(SSL *s, int fd)
709 {
710 int ret = 0;
711 BIO *bio = NULL;
712
713 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
714 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
715 bio = BIO_new(BIO_s_socket());
716
717 if (bio == NULL) {
718 SSLerror(s, ERR_R_BUF_LIB);
719 goto err;
720 }
721 BIO_set_fd(bio, fd, BIO_NOCLOSE);
722 SSL_set_bio(s, SSL_get_rbio(s), bio);
723 } else
724 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
725 ret = 1;
726 err:
727 return (ret);
728 }
729 LSSL_ALIAS(SSL_set_wfd);
730
731 int
SSL_set_rfd(SSL * s,int fd)732 SSL_set_rfd(SSL *s, int fd)
733 {
734 int ret = 0;
735 BIO *bio = NULL;
736
737 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
738 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
739 bio = BIO_new(BIO_s_socket());
740
741 if (bio == NULL) {
742 SSLerror(s, ERR_R_BUF_LIB);
743 goto err;
744 }
745 BIO_set_fd(bio, fd, BIO_NOCLOSE);
746 SSL_set_bio(s, bio, SSL_get_wbio(s));
747 } else
748 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
749 ret = 1;
750 err:
751 return (ret);
752 }
753 LSSL_ALIAS(SSL_set_rfd);
754
755
756 /* return length of latest Finished message we sent, copy to 'buf' */
757 size_t
SSL_get_finished(const SSL * s,void * buf,size_t count)758 SSL_get_finished(const SSL *s, void *buf, size_t count)
759 {
760 size_t ret;
761
762 ret = s->s3->hs.finished_len;
763 if (count > ret)
764 count = ret;
765 memcpy(buf, s->s3->hs.finished, count);
766 return (ret);
767 }
768 LSSL_ALIAS(SSL_get_finished);
769
770 /* return length of latest Finished message we expected, copy to 'buf' */
771 size_t
SSL_get_peer_finished(const SSL * s,void * buf,size_t count)772 SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
773 {
774 size_t ret;
775
776 ret = s->s3->hs.peer_finished_len;
777 if (count > ret)
778 count = ret;
779 memcpy(buf, s->s3->hs.peer_finished, count);
780 return (ret);
781 }
782 LSSL_ALIAS(SSL_get_peer_finished);
783
784
785 int
SSL_get_verify_mode(const SSL * s)786 SSL_get_verify_mode(const SSL *s)
787 {
788 return (s->verify_mode);
789 }
790 LSSL_ALIAS(SSL_get_verify_mode);
791
792 int
SSL_get_verify_depth(const SSL * s)793 SSL_get_verify_depth(const SSL *s)
794 {
795 return (X509_VERIFY_PARAM_get_depth(s->param));
796 }
797 LSSL_ALIAS(SSL_get_verify_depth);
798
799 int
SSL_get_verify_callback(const SSL * s)800 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *)
801 {
802 return (s->verify_callback);
803 }
804 LSSL_ALIAS(SSL_get_verify_callback);
805
806 void
SSL_CTX_set_keylog_callback(SSL_CTX * ctx,SSL_CTX_keylog_cb_func cb)807 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
808 {
809 ctx->keylog_callback = cb;
810 }
811 LSSL_ALIAS(SSL_CTX_set_keylog_callback);
812
813 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX * ctx)814 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
815 {
816 return (ctx->keylog_callback);
817 }
818 LSSL_ALIAS(SSL_CTX_get_keylog_callback);
819
820 int
SSL_set_num_tickets(SSL * s,size_t num_tickets)821 SSL_set_num_tickets(SSL *s, size_t num_tickets)
822 {
823 s->num_tickets = num_tickets;
824
825 return 1;
826 }
827 LSSL_ALIAS(SSL_set_num_tickets);
828
829 size_t
SSL_get_num_tickets(const SSL * s)830 SSL_get_num_tickets(const SSL *s)
831 {
832 return s->num_tickets;
833 }
834 LSSL_ALIAS(SSL_get_num_tickets);
835
836 int
SSL_CTX_set_num_tickets(SSL_CTX * ctx,size_t num_tickets)837 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
838 {
839 ctx->num_tickets = num_tickets;
840
841 return 1;
842 }
843 LSSL_ALIAS(SSL_CTX_set_num_tickets);
844
845 size_t
SSL_CTX_get_num_tickets(const SSL_CTX * ctx)846 SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
847 {
848 return ctx->num_tickets;
849 }
850 LSSL_ALIAS(SSL_CTX_get_num_tickets);
851
852 int
SSL_CTX_get_verify_mode(const SSL_CTX * ctx)853 SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
854 {
855 return (ctx->verify_mode);
856 }
857 LSSL_ALIAS(SSL_CTX_get_verify_mode);
858
859 int
SSL_CTX_get_verify_depth(const SSL_CTX * ctx)860 SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
861 {
862 return (X509_VERIFY_PARAM_get_depth(ctx->param));
863 }
864 LSSL_ALIAS(SSL_CTX_get_verify_depth);
865
866 int
SSL_CTX_get_verify_callback(const SSL_CTX * ctx)867 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *)
868 {
869 return (ctx->default_verify_callback);
870 }
871 LSSL_ALIAS(SSL_CTX_get_verify_callback);
872
873 void
SSL_set_verify(SSL * s,int mode,int (* callback)(int ok,X509_STORE_CTX * ctx))874 SSL_set_verify(SSL *s, int mode,
875 int (*callback)(int ok, X509_STORE_CTX *ctx))
876 {
877 s->verify_mode = mode;
878 if (callback != NULL)
879 s->verify_callback = callback;
880 }
881 LSSL_ALIAS(SSL_set_verify);
882
883 void
SSL_set_verify_depth(SSL * s,int depth)884 SSL_set_verify_depth(SSL *s, int depth)
885 {
886 X509_VERIFY_PARAM_set_depth(s->param, depth);
887 }
888 LSSL_ALIAS(SSL_set_verify_depth);
889
890 void
SSL_set_read_ahead(SSL * s,int yes)891 SSL_set_read_ahead(SSL *s, int yes)
892 {
893 s->read_ahead = yes;
894 }
895 LSSL_ALIAS(SSL_set_read_ahead);
896
897 int
SSL_get_read_ahead(const SSL * s)898 SSL_get_read_ahead(const SSL *s)
899 {
900 return (s->read_ahead);
901 }
902 LSSL_ALIAS(SSL_get_read_ahead);
903
904 int
SSL_pending(const SSL * s)905 SSL_pending(const SSL *s)
906 {
907 return (s->method->ssl_pending(s));
908 }
909 LSSL_ALIAS(SSL_pending);
910
911 X509 *
SSL_get_peer_certificate(const SSL * s)912 SSL_get_peer_certificate(const SSL *s)
913 {
914 X509 *cert;
915
916 if (s == NULL || s->session == NULL)
917 return NULL;
918
919 if ((cert = s->session->peer_cert) == NULL)
920 return NULL;
921
922 X509_up_ref(cert);
923
924 return cert;
925 }
926 LSSL_ALIAS(SSL_get_peer_certificate);
927
STACK_OF(X509)928 STACK_OF(X509) *
929 SSL_get_peer_cert_chain(const SSL *s)
930 {
931 if (s == NULL)
932 return NULL;
933
934 /*
935 * Achtung! Due to API inconsistency, a client includes the peer's leaf
936 * certificate in the peer certificate chain, while a server does not.
937 */
938 if (!s->server)
939 return s->s3->hs.peer_certs;
940
941 return s->s3->hs.peer_certs_no_leaf;
942 }
943 LSSL_ALIAS(SSL_get_peer_cert_chain);
944
STACK_OF(X509)945 STACK_OF(X509) *
946 SSL_get0_verified_chain(const SSL *s)
947 {
948 if (s->s3 == NULL)
949 return NULL;
950 return s->s3->hs.verified_chain;
951 }
952 LSSL_ALIAS(SSL_get0_verified_chain);
953
954 /*
955 * Now in theory, since the calling process own 't' it should be safe to
956 * modify. We need to be able to read f without being hassled
957 */
958 int
SSL_copy_session_id(SSL * t,const SSL * f)959 SSL_copy_session_id(SSL *t, const SSL *f)
960 {
961 SSL_CERT *tmp;
962
963 /* Do we need to do SSL locking? */
964 if (!SSL_set_session(t, SSL_get_session(f)))
965 return 0;
966
967 /* What if we are set up for one protocol but want to talk another? */
968 if (t->method != f->method) {
969 t->method->ssl_free(t);
970 t->method = f->method;
971 if (!t->method->ssl_new(t))
972 return 0;
973 }
974
975 tmp = t->cert;
976 if (f->cert != NULL) {
977 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
978 t->cert = f->cert;
979 } else
980 t->cert = NULL;
981 ssl_cert_free(tmp);
982
983 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length))
984 return 0;
985
986 return 1;
987 }
988 LSSL_ALIAS(SSL_copy_session_id);
989
990 /* Fix this so it checks all the valid key/cert options */
991 int
SSL_CTX_check_private_key(const SSL_CTX * ctx)992 SSL_CTX_check_private_key(const SSL_CTX *ctx)
993 {
994 if ((ctx == NULL) || (ctx->cert == NULL) ||
995 (ctx->cert->key->x509 == NULL)) {
996 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED);
997 return (0);
998 }
999 if (ctx->cert->key->privatekey == NULL) {
1000 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1001 return (0);
1002 }
1003 return (X509_check_private_key(ctx->cert->key->x509,
1004 ctx->cert->key->privatekey));
1005 }
1006 LSSL_ALIAS(SSL_CTX_check_private_key);
1007
1008 /* Fix this function so that it takes an optional type parameter */
1009 int
SSL_check_private_key(const SSL * ssl)1010 SSL_check_private_key(const SSL *ssl)
1011 {
1012 if (ssl == NULL) {
1013 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
1014 return (0);
1015 }
1016 if (ssl->cert == NULL) {
1017 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
1018 return (0);
1019 }
1020 if (ssl->cert->key->x509 == NULL) {
1021 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
1022 return (0);
1023 }
1024 if (ssl->cert->key->privatekey == NULL) {
1025 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1026 return (0);
1027 }
1028 return (X509_check_private_key(ssl->cert->key->x509,
1029 ssl->cert->key->privatekey));
1030 }
1031 LSSL_ALIAS(SSL_check_private_key);
1032
1033 int
SSL_accept(SSL * s)1034 SSL_accept(SSL *s)
1035 {
1036 if (s->handshake_func == NULL)
1037 SSL_set_accept_state(s); /* Not properly initialized yet */
1038
1039 return (s->method->ssl_accept(s));
1040 }
1041 LSSL_ALIAS(SSL_accept);
1042
1043 int
SSL_connect(SSL * s)1044 SSL_connect(SSL *s)
1045 {
1046 if (s->handshake_func == NULL)
1047 SSL_set_connect_state(s); /* Not properly initialized yet */
1048
1049 return (s->method->ssl_connect(s));
1050 }
1051 LSSL_ALIAS(SSL_connect);
1052
1053 int
SSL_is_dtls(const SSL * s)1054 SSL_is_dtls(const SSL *s)
1055 {
1056 return s->method->dtls;
1057 }
1058 LSSL_ALIAS(SSL_is_dtls);
1059
1060 int
SSL_is_server(const SSL * s)1061 SSL_is_server(const SSL *s)
1062 {
1063 return s->server;
1064 }
1065 LSSL_ALIAS(SSL_is_server);
1066
1067 static long
ssl_get_default_timeout(void)1068 ssl_get_default_timeout(void)
1069 {
1070 /*
1071 * 2 hours, the 24 hours mentioned in the TLSv1 spec
1072 * is way too long for http, the cache would over fill.
1073 */
1074 return (2 * 60 * 60);
1075 }
1076
1077 long
SSL_get_default_timeout(const SSL * s)1078 SSL_get_default_timeout(const SSL *s)
1079 {
1080 return (ssl_get_default_timeout());
1081 }
1082 LSSL_ALIAS(SSL_get_default_timeout);
1083
1084 int
SSL_read(SSL * s,void * buf,int num)1085 SSL_read(SSL *s, void *buf, int num)
1086 {
1087 if (num < 0) {
1088 SSLerror(s, SSL_R_BAD_LENGTH);
1089 return -1;
1090 }
1091
1092 if (SSL_is_quic(s)) {
1093 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1094 return (-1);
1095 }
1096
1097 if (s->handshake_func == NULL) {
1098 SSLerror(s, SSL_R_UNINITIALIZED);
1099 return (-1);
1100 }
1101
1102 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1103 s->rwstate = SSL_NOTHING;
1104 return (0);
1105 }
1106 return ssl3_read(s, buf, num);
1107 }
1108 LSSL_ALIAS(SSL_read);
1109
1110 int
SSL_read_ex(SSL * s,void * buf,size_t num,size_t * bytes_read)1111 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read)
1112 {
1113 int ret;
1114
1115 /* We simply don't bother supporting enormous reads */
1116 if (num > INT_MAX) {
1117 SSLerror(s, SSL_R_BAD_LENGTH);
1118 return 0;
1119 }
1120
1121 ret = SSL_read(s, buf, (int)num);
1122 if (ret < 0)
1123 ret = 0;
1124 *bytes_read = ret;
1125
1126 return ret > 0;
1127 }
1128 LSSL_ALIAS(SSL_read_ex);
1129
1130 int
SSL_peek(SSL * s,void * buf,int num)1131 SSL_peek(SSL *s, void *buf, int num)
1132 {
1133 if (num < 0) {
1134 SSLerror(s, SSL_R_BAD_LENGTH);
1135 return -1;
1136 }
1137
1138 if (SSL_is_quic(s)) {
1139 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1140 return (-1);
1141 }
1142
1143 if (s->handshake_func == NULL) {
1144 SSLerror(s, SSL_R_UNINITIALIZED);
1145 return (-1);
1146 }
1147
1148 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1149 return (0);
1150 }
1151 return ssl3_peek(s, buf, num);
1152 }
1153 LSSL_ALIAS(SSL_peek);
1154
1155 int
SSL_peek_ex(SSL * s,void * buf,size_t num,size_t * bytes_peeked)1156 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked)
1157 {
1158 int ret;
1159
1160 /* We simply don't bother supporting enormous peeks */
1161 if (num > INT_MAX) {
1162 SSLerror(s, SSL_R_BAD_LENGTH);
1163 return 0;
1164 }
1165
1166 ret = SSL_peek(s, buf, (int)num);
1167 if (ret < 0)
1168 ret = 0;
1169 *bytes_peeked = ret;
1170
1171 return ret > 0;
1172 }
1173 LSSL_ALIAS(SSL_peek_ex);
1174
1175 int
SSL_write(SSL * s,const void * buf,int num)1176 SSL_write(SSL *s, const void *buf, int num)
1177 {
1178 if (num < 0) {
1179 SSLerror(s, SSL_R_BAD_LENGTH);
1180 return -1;
1181 }
1182
1183 if (SSL_is_quic(s)) {
1184 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1185 return (-1);
1186 }
1187
1188 if (s->handshake_func == NULL) {
1189 SSLerror(s, SSL_R_UNINITIALIZED);
1190 return (-1);
1191 }
1192
1193 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1194 s->rwstate = SSL_NOTHING;
1195 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN);
1196 return (-1);
1197 }
1198 return ssl3_write(s, buf, num);
1199 }
1200 LSSL_ALIAS(SSL_write);
1201
1202 int
SSL_write_ex(SSL * s,const void * buf,size_t num,size_t * bytes_written)1203 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written)
1204 {
1205 int ret;
1206
1207 /* We simply don't bother supporting enormous writes */
1208 if (num > INT_MAX) {
1209 SSLerror(s, SSL_R_BAD_LENGTH);
1210 return 0;
1211 }
1212
1213 if (num == 0) {
1214 /* This API is special */
1215 bytes_written = 0;
1216 return 1;
1217 }
1218
1219 ret = SSL_write(s, buf, (int)num);
1220 if (ret < 0)
1221 ret = 0;
1222 *bytes_written = ret;
1223
1224 return ret > 0;
1225 }
1226 LSSL_ALIAS(SSL_write_ex);
1227
1228 uint32_t
SSL_CTX_get_max_early_data(const SSL_CTX * ctx)1229 SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
1230 {
1231 return 0;
1232 }
1233 LSSL_ALIAS(SSL_CTX_get_max_early_data);
1234
1235 int
SSL_CTX_set_max_early_data(SSL_CTX * ctx,uint32_t max_early_data)1236 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
1237 {
1238 return 1;
1239 }
1240 LSSL_ALIAS(SSL_CTX_set_max_early_data);
1241
1242 uint32_t
SSL_get_max_early_data(const SSL * s)1243 SSL_get_max_early_data(const SSL *s)
1244 {
1245 return 0;
1246 }
1247 LSSL_ALIAS(SSL_get_max_early_data);
1248
1249 int
SSL_set_max_early_data(SSL * s,uint32_t max_early_data)1250 SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
1251 {
1252 return 1;
1253 }
1254 LSSL_ALIAS(SSL_set_max_early_data);
1255
1256 int
SSL_get_early_data_status(const SSL * s)1257 SSL_get_early_data_status(const SSL *s)
1258 {
1259 return SSL_EARLY_DATA_REJECTED;
1260 }
1261 LSSL_ALIAS(SSL_get_early_data_status);
1262
1263 int
SSL_read_early_data(SSL * s,void * buf,size_t num,size_t * readbytes)1264 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1265 {
1266 *readbytes = 0;
1267
1268 if (!s->server) {
1269 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1270 return SSL_READ_EARLY_DATA_ERROR;
1271 }
1272
1273 return SSL_READ_EARLY_DATA_FINISH;
1274 }
1275 LSSL_ALIAS(SSL_read_early_data);
1276
1277 int
SSL_write_early_data(SSL * s,const void * buf,size_t num,size_t * written)1278 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1279 {
1280 *written = 0;
1281 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1282 return 0;
1283 }
1284 LSSL_ALIAS(SSL_write_early_data);
1285
1286 int
SSL_shutdown(SSL * s)1287 SSL_shutdown(SSL *s)
1288 {
1289 /*
1290 * Note that this function behaves differently from what one might
1291 * expect. Return values are 0 for no success (yet),
1292 * 1 for success; but calling it once is usually not enough,
1293 * even if blocking I/O is used (see ssl3_shutdown).
1294 */
1295
1296 if (s->handshake_func == NULL) {
1297 SSLerror(s, SSL_R_UNINITIALIZED);
1298 return (-1);
1299 }
1300
1301 if (s != NULL && !SSL_in_init(s))
1302 return (s->method->ssl_shutdown(s));
1303
1304 return (1);
1305 }
1306 LSSL_ALIAS(SSL_shutdown);
1307
1308 int
SSL_renegotiate(SSL * s)1309 SSL_renegotiate(SSL *s)
1310 {
1311 if (s->renegotiate == 0)
1312 s->renegotiate = 1;
1313
1314 s->new_session = 1;
1315
1316 return (s->method->ssl_renegotiate(s));
1317 }
1318 LSSL_ALIAS(SSL_renegotiate);
1319
1320 int
SSL_renegotiate_abbreviated(SSL * s)1321 SSL_renegotiate_abbreviated(SSL *s)
1322 {
1323 if (s->renegotiate == 0)
1324 s->renegotiate = 1;
1325
1326 s->new_session = 0;
1327
1328 return (s->method->ssl_renegotiate(s));
1329 }
1330 LSSL_ALIAS(SSL_renegotiate_abbreviated);
1331
1332 int
SSL_renegotiate_pending(SSL * s)1333 SSL_renegotiate_pending(SSL *s)
1334 {
1335 /*
1336 * Becomes true when negotiation is requested;
1337 * false again once a handshake has finished.
1338 */
1339 return (s->renegotiate != 0);
1340 }
1341 LSSL_ALIAS(SSL_renegotiate_pending);
1342
1343 long
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)1344 SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1345 {
1346 long l;
1347
1348 switch (cmd) {
1349 case SSL_CTRL_GET_READ_AHEAD:
1350 return (s->read_ahead);
1351 case SSL_CTRL_SET_READ_AHEAD:
1352 l = s->read_ahead;
1353 s->read_ahead = larg;
1354 return (l);
1355
1356 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1357 s->msg_callback_arg = parg;
1358 return (1);
1359
1360 case SSL_CTRL_OPTIONS:
1361 return (s->options|=larg);
1362 case SSL_CTRL_CLEAR_OPTIONS:
1363 return (s->options&=~larg);
1364 case SSL_CTRL_MODE:
1365 return (s->mode|=larg);
1366 case SSL_CTRL_CLEAR_MODE:
1367 return (s->mode &=~larg);
1368 case SSL_CTRL_GET_MAX_CERT_LIST:
1369 return (s->max_cert_list);
1370 case SSL_CTRL_SET_MAX_CERT_LIST:
1371 l = s->max_cert_list;
1372 s->max_cert_list = larg;
1373 return (l);
1374 case SSL_CTRL_SET_MTU:
1375 #ifndef OPENSSL_NO_DTLS1
1376 if (larg < (long)dtls1_min_mtu())
1377 return (0);
1378 #endif
1379 if (SSL_is_dtls(s)) {
1380 s->d1->mtu = larg;
1381 return (larg);
1382 }
1383 return (0);
1384 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1385 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1386 return (0);
1387 s->max_send_fragment = larg;
1388 return (1);
1389 case SSL_CTRL_GET_RI_SUPPORT:
1390 if (s->s3)
1391 return (s->s3->send_connection_binding);
1392 else return (0);
1393 default:
1394 if (SSL_is_dtls(s))
1395 return dtls1_ctrl(s, cmd, larg, parg);
1396 return ssl3_ctrl(s, cmd, larg, parg);
1397 }
1398 }
1399 LSSL_ALIAS(SSL_ctrl);
1400
1401 long
SSL_callback_ctrl(SSL * s,int cmd,void (* fp)(void))1402 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1403 {
1404 switch (cmd) {
1405 case SSL_CTRL_SET_MSG_CALLBACK:
1406 s->msg_callback = (ssl_msg_callback_fn *)(fp);
1407 return (1);
1408
1409 default:
1410 return (ssl3_callback_ctrl(s, cmd, fp));
1411 }
1412 }
1413 LSSL_ALIAS(SSL_callback_ctrl);
1414
1415 struct lhash_st_SSL_SESSION *
SSL_CTX_sessions(SSL_CTX * ctx)1416 SSL_CTX_sessions(SSL_CTX *ctx)
1417 {
1418 return (ctx->sessions);
1419 }
1420 LSSL_ALIAS(SSL_CTX_sessions);
1421
1422 long
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)1423 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1424 {
1425 long l;
1426
1427 switch (cmd) {
1428 case SSL_CTRL_GET_READ_AHEAD:
1429 return (ctx->read_ahead);
1430 case SSL_CTRL_SET_READ_AHEAD:
1431 l = ctx->read_ahead;
1432 ctx->read_ahead = larg;
1433 return (l);
1434
1435 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1436 ctx->msg_callback_arg = parg;
1437 return (1);
1438
1439 case SSL_CTRL_GET_MAX_CERT_LIST:
1440 return (ctx->max_cert_list);
1441 case SSL_CTRL_SET_MAX_CERT_LIST:
1442 l = ctx->max_cert_list;
1443 ctx->max_cert_list = larg;
1444 return (l);
1445
1446 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1447 l = ctx->session_cache_size;
1448 ctx->session_cache_size = larg;
1449 return (l);
1450 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1451 return (ctx->session_cache_size);
1452 case SSL_CTRL_SET_SESS_CACHE_MODE:
1453 l = ctx->session_cache_mode;
1454 ctx->session_cache_mode = larg;
1455 return (l);
1456 case SSL_CTRL_GET_SESS_CACHE_MODE:
1457 return (ctx->session_cache_mode);
1458
1459 case SSL_CTRL_SESS_NUMBER:
1460 return (lh_SSL_SESSION_num_items(ctx->sessions));
1461 case SSL_CTRL_SESS_CONNECT:
1462 return (ctx->stats.sess_connect);
1463 case SSL_CTRL_SESS_CONNECT_GOOD:
1464 return (ctx->stats.sess_connect_good);
1465 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1466 return (ctx->stats.sess_connect_renegotiate);
1467 case SSL_CTRL_SESS_ACCEPT:
1468 return (ctx->stats.sess_accept);
1469 case SSL_CTRL_SESS_ACCEPT_GOOD:
1470 return (ctx->stats.sess_accept_good);
1471 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1472 return (ctx->stats.sess_accept_renegotiate);
1473 case SSL_CTRL_SESS_HIT:
1474 return (ctx->stats.sess_hit);
1475 case SSL_CTRL_SESS_CB_HIT:
1476 return (ctx->stats.sess_cb_hit);
1477 case SSL_CTRL_SESS_MISSES:
1478 return (ctx->stats.sess_miss);
1479 case SSL_CTRL_SESS_TIMEOUTS:
1480 return (ctx->stats.sess_timeout);
1481 case SSL_CTRL_SESS_CACHE_FULL:
1482 return (ctx->stats.sess_cache_full);
1483 case SSL_CTRL_OPTIONS:
1484 return (ctx->options|=larg);
1485 case SSL_CTRL_CLEAR_OPTIONS:
1486 return (ctx->options&=~larg);
1487 case SSL_CTRL_MODE:
1488 return (ctx->mode|=larg);
1489 case SSL_CTRL_CLEAR_MODE:
1490 return (ctx->mode&=~larg);
1491 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1492 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1493 return (0);
1494 ctx->max_send_fragment = larg;
1495 return (1);
1496 default:
1497 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg));
1498 }
1499 }
1500 LSSL_ALIAS(SSL_CTX_ctrl);
1501
1502 long
SSL_CTX_callback_ctrl(SSL_CTX * ctx,int cmd,void (* fp)(void))1503 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1504 {
1505 switch (cmd) {
1506 case SSL_CTRL_SET_MSG_CALLBACK:
1507 ctx->msg_callback = (ssl_msg_callback_fn *)fp;
1508 return (1);
1509
1510 default:
1511 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp));
1512 }
1513 }
1514 LSSL_ALIAS(SSL_CTX_callback_ctrl);
1515
STACK_OF(SSL_CIPHER)1516 STACK_OF(SSL_CIPHER) *
1517 SSL_get_ciphers(const SSL *s)
1518 {
1519 if (s == NULL)
1520 return (NULL);
1521 if (s->cipher_list != NULL)
1522 return (s->cipher_list);
1523
1524 return (s->ctx->cipher_list);
1525 }
1526 LSSL_ALIAS(SSL_get_ciphers);
1527
STACK_OF(SSL_CIPHER)1528 STACK_OF(SSL_CIPHER) *
1529 SSL_get_client_ciphers(const SSL *s)
1530 {
1531 if (s == NULL || s->session == NULL || !s->server)
1532 return NULL;
1533 return s->session->ciphers;
1534 }
1535 LSSL_ALIAS(SSL_get_client_ciphers);
1536
STACK_OF(SSL_CIPHER)1537 STACK_OF(SSL_CIPHER) *
1538 SSL_get1_supported_ciphers(SSL *s)
1539 {
1540 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers;
1541 SSL_CIPHER *cipher;
1542 uint16_t min_vers, max_vers;
1543 int i;
1544
1545 if (s == NULL)
1546 return NULL;
1547 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers))
1548 return NULL;
1549 if ((ciphers = SSL_get_ciphers(s)) == NULL)
1550 return NULL;
1551 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL)
1552 return NULL;
1553
1554 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1555 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL)
1556 goto err;
1557 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers,
1558 max_vers))
1559 continue;
1560 if (!ssl_security_supported_cipher(s, cipher))
1561 continue;
1562 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher))
1563 goto err;
1564 }
1565
1566 if (sk_SSL_CIPHER_num(supported_ciphers) > 0)
1567 return supported_ciphers;
1568
1569 err:
1570 sk_SSL_CIPHER_free(supported_ciphers);
1571 return NULL;
1572 }
1573 LSSL_ALIAS(SSL_get1_supported_ciphers);
1574
1575 /* See if we have any ECC cipher suites. */
1576 int
ssl_has_ecc_ciphers(SSL * s)1577 ssl_has_ecc_ciphers(SSL *s)
1578 {
1579 STACK_OF(SSL_CIPHER) *ciphers;
1580 unsigned long alg_k, alg_a;
1581 SSL_CIPHER *cipher;
1582 int i;
1583
1584 if ((ciphers = SSL_get_ciphers(s)) == NULL)
1585 return 0;
1586
1587 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1588 cipher = sk_SSL_CIPHER_value(ciphers, i);
1589
1590 alg_k = cipher->algorithm_mkey;
1591 alg_a = cipher->algorithm_auth;
1592
1593 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA))
1594 return 1;
1595 }
1596
1597 return 0;
1598 }
1599
1600 /* The old interface to get the same thing as SSL_get_ciphers(). */
1601 const char *
SSL_get_cipher_list(const SSL * s,int n)1602 SSL_get_cipher_list(const SSL *s, int n)
1603 {
1604 STACK_OF(SSL_CIPHER) *ciphers;
1605 const SSL_CIPHER *cipher;
1606
1607 if ((ciphers = SSL_get_ciphers(s)) == NULL)
1608 return (NULL);
1609 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL)
1610 return (NULL);
1611
1612 return (cipher->name);
1613 }
1614 LSSL_ALIAS(SSL_get_cipher_list);
1615
STACK_OF(SSL_CIPHER)1616 STACK_OF(SSL_CIPHER) *
1617 SSL_CTX_get_ciphers(const SSL_CTX *ctx)
1618 {
1619 if (ctx == NULL)
1620 return NULL;
1621 return ctx->cipher_list;
1622 }
1623 LSSL_ALIAS(SSL_CTX_get_ciphers);
1624
1625 /* Specify the ciphers to be used by default by the SSL_CTX. */
1626 int
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)1627 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1628 {
1629 STACK_OF(SSL_CIPHER) *ciphers;
1630
1631 /*
1632 * ssl_create_cipher_list may return an empty stack if it was unable to
1633 * find a cipher matching the given rule string (for example if the
1634 * rule string specifies a cipher which has been disabled). This is not
1635 * an error as far as ssl_create_cipher_list is concerned, and hence
1636 * ctx->cipher_list has been updated.
1637 */
1638 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1639 ctx->cipher_list_tls13, str, ctx->cert);
1640 if (ciphers == NULL) {
1641 return (0);
1642 } else if (sk_SSL_CIPHER_num(ciphers) == 0) {
1643 SSLerrorx(SSL_R_NO_CIPHER_MATCH);
1644 return (0);
1645 }
1646 return (1);
1647 }
1648 LSSL_ALIAS(SSL_CTX_set_cipher_list);
1649
1650 int
SSL_CTX_set_ciphersuites(SSL_CTX * ctx,const char * str)1651 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str)
1652 {
1653 if (!ssl_parse_ciphersuites(&ctx->cipher_list_tls13, str)) {
1654 SSLerrorx(SSL_R_NO_CIPHER_MATCH);
1655 return 0;
1656 }
1657 if (!ssl_merge_cipherlists(ctx->cipher_list,
1658 ctx->cipher_list_tls13, &ctx->cipher_list))
1659 return 0;
1660
1661 return 1;
1662 }
1663 LSSL_ALIAS(SSL_CTX_set_ciphersuites);
1664
1665 /* Specify the ciphers to be used by the SSL. */
1666 int
SSL_set_cipher_list(SSL * s,const char * str)1667 SSL_set_cipher_list(SSL *s, const char *str)
1668 {
1669 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13;
1670
1671 if ((ciphers_tls13 = s->cipher_list_tls13) == NULL)
1672 ciphers_tls13 = s->ctx->cipher_list_tls13;
1673
1674 /* See comment in SSL_CTX_set_cipher_list. */
1675 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1676 ciphers_tls13, str, s->cert);
1677 if (ciphers == NULL) {
1678 return (0);
1679 } else if (sk_SSL_CIPHER_num(ciphers) == 0) {
1680 SSLerror(s, SSL_R_NO_CIPHER_MATCH);
1681 return (0);
1682 }
1683 return (1);
1684 }
1685 LSSL_ALIAS(SSL_set_cipher_list);
1686
1687 int
SSL_set_ciphersuites(SSL * s,const char * str)1688 SSL_set_ciphersuites(SSL *s, const char *str)
1689 {
1690 STACK_OF(SSL_CIPHER) *ciphers;
1691
1692 if ((ciphers = s->cipher_list) == NULL)
1693 ciphers = s->ctx->cipher_list;
1694
1695 if (!ssl_parse_ciphersuites(&s->cipher_list_tls13, str)) {
1696 SSLerrorx(SSL_R_NO_CIPHER_MATCH);
1697 return (0);
1698 }
1699 if (!ssl_merge_cipherlists(ciphers, s->cipher_list_tls13,
1700 &s->cipher_list))
1701 return 0;
1702
1703 return 1;
1704 }
1705 LSSL_ALIAS(SSL_set_ciphersuites);
1706
1707 char *
SSL_get_shared_ciphers(const SSL * s,char * buf,int len)1708 SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1709 {
1710 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers;
1711 const SSL_CIPHER *cipher;
1712 size_t curlen = 0;
1713 char *end;
1714 int i;
1715
1716 if (!s->server || s->session == NULL || len < 2)
1717 return NULL;
1718
1719 if ((client_ciphers = s->session->ciphers) == NULL)
1720 return NULL;
1721 if ((server_ciphers = SSL_get_ciphers(s)) == NULL)
1722 return NULL;
1723 if (sk_SSL_CIPHER_num(client_ciphers) == 0 ||
1724 sk_SSL_CIPHER_num(server_ciphers) == 0)
1725 return NULL;
1726
1727 buf[0] = '\0';
1728 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) {
1729 cipher = sk_SSL_CIPHER_value(client_ciphers, i);
1730
1731 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0)
1732 continue;
1733
1734 end = buf + curlen;
1735 if (strlcat(buf, cipher->name, len) >= len ||
1736 (curlen = strlcat(buf, ":", len)) >= len) {
1737 /* remove truncated cipher from list */
1738 *end = '\0';
1739 break;
1740 }
1741 }
1742 /* remove trailing colon */
1743 if ((end = strrchr(buf, ':')) != NULL)
1744 *end = '\0';
1745 return buf;
1746 }
1747 LSSL_ALIAS(SSL_get_shared_ciphers);
1748
1749 /*
1750 * Return a servername extension value if provided in Client Hello, or NULL.
1751 * So far, only host_name types are defined (RFC 3546).
1752 */
1753 const char *
SSL_get_servername(const SSL * s,const int type)1754 SSL_get_servername(const SSL *s, const int type)
1755 {
1756 if (type != TLSEXT_NAMETYPE_host_name)
1757 return (NULL);
1758
1759 return (s->session && !s->tlsext_hostname ?
1760 s->session->tlsext_hostname :
1761 s->tlsext_hostname);
1762 }
1763 LSSL_ALIAS(SSL_get_servername);
1764
1765 int
SSL_get_servername_type(const SSL * s)1766 SSL_get_servername_type(const SSL *s)
1767 {
1768 if (s->session &&
1769 (!s->tlsext_hostname ?
1770 s->session->tlsext_hostname : s->tlsext_hostname))
1771 return (TLSEXT_NAMETYPE_host_name);
1772 return (-1);
1773 }
1774 LSSL_ALIAS(SSL_get_servername_type);
1775
1776 /*
1777 * SSL_select_next_proto implements standard protocol selection. It is
1778 * expected that this function is called from the callback set by
1779 * SSL_CTX_set_alpn_select_cb.
1780 *
1781 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1782 * strings. The length byte itself is not included in the length. A byte
1783 * string of length 0 is invalid. No byte string may be truncated.
1784 *
1785 * It returns either:
1786 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1787 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1788 */
1789 int
SSL_select_next_proto(unsigned char ** out,unsigned char * outlen,const unsigned char * server,unsigned int server_len,const unsigned char * client,unsigned int client_len)1790 SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1791 const unsigned char *server, unsigned int server_len,
1792 const unsigned char *client, unsigned int client_len)
1793 {
1794 unsigned int i, j;
1795 const unsigned char *result;
1796 int status = OPENSSL_NPN_UNSUPPORTED;
1797
1798 /*
1799 * For each protocol in server preference order,
1800 * see if we support it.
1801 */
1802 for (i = 0; i < server_len; ) {
1803 for (j = 0; j < client_len; ) {
1804 if (server[i] == client[j] &&
1805 memcmp(&server[i + 1],
1806 &client[j + 1], server[i]) == 0) {
1807 /* We found a match */
1808 result = &server[i];
1809 status = OPENSSL_NPN_NEGOTIATED;
1810 goto found;
1811 }
1812 j += client[j];
1813 j++;
1814 }
1815 i += server[i];
1816 i++;
1817 }
1818
1819 /* There's no overlap between our protocols and the server's list. */
1820 result = client;
1821 status = OPENSSL_NPN_NO_OVERLAP;
1822
1823 found:
1824 *out = (unsigned char *) result + 1;
1825 *outlen = result[0];
1826 return (status);
1827 }
1828 LSSL_ALIAS(SSL_select_next_proto);
1829
1830 /* SSL_get0_next_proto_negotiated is deprecated. */
1831 void
SSL_get0_next_proto_negotiated(const SSL * s,const unsigned char ** data,unsigned int * len)1832 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1833 unsigned int *len)
1834 {
1835 *data = NULL;
1836 *len = 0;
1837 }
1838 LSSL_ALIAS(SSL_get0_next_proto_negotiated);
1839
1840 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */
1841 void
SSL_CTX_set_next_protos_advertised_cb(SSL_CTX * ctx,int (* cb)(SSL * ssl,const unsigned char ** out,unsigned int * outlen,void * arg),void * arg)1842 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl,
1843 const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
1844 {
1845 }
1846 LSSL_ALIAS(SSL_CTX_set_next_protos_advertised_cb);
1847
1848 /* SSL_CTX_set_next_proto_select_cb is deprecated. */
1849 void
SSL_CTX_set_next_proto_select_cb(SSL_CTX * ctx,int (* cb)(SSL * s,unsigned char ** out,unsigned char * outlen,const unsigned char * in,unsigned int inlen,void * arg),void * arg)1850 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s,
1851 unsigned char **out, unsigned char *outlen, const unsigned char *in,
1852 unsigned int inlen, void *arg), void *arg)
1853 {
1854 }
1855 LSSL_ALIAS(SSL_CTX_set_next_proto_select_cb);
1856
1857 /*
1858 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified
1859 * protocols, which must be in wire-format (i.e. a series of non-empty,
1860 * 8-bit length-prefixed strings). Returns 0 on success.
1861 */
1862 int
SSL_CTX_set_alpn_protos(SSL_CTX * ctx,const unsigned char * protos,unsigned int protos_len)1863 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1864 unsigned int protos_len)
1865 {
1866 CBS cbs;
1867 int failed = 1;
1868
1869 if (protos == NULL)
1870 protos_len = 0;
1871
1872 CBS_init(&cbs, protos, protos_len);
1873
1874 if (protos_len > 0) {
1875 if (!tlsext_alpn_check_format(&cbs))
1876 goto err;
1877 }
1878
1879 if (!CBS_stow(&cbs, &ctx->alpn_client_proto_list,
1880 &ctx->alpn_client_proto_list_len))
1881 goto err;
1882
1883 failed = 0;
1884
1885 err:
1886 /* NOTE: Return values are the reverse of what you expect. */
1887 return failed;
1888 }
1889 LSSL_ALIAS(SSL_CTX_set_alpn_protos);
1890
1891 /*
1892 * SSL_set_alpn_protos sets the ALPN protocol list to the specified
1893 * protocols, which must be in wire-format (i.e. a series of non-empty,
1894 * 8-bit length-prefixed strings). Returns 0 on success.
1895 */
1896 int
SSL_set_alpn_protos(SSL * ssl,const unsigned char * protos,unsigned int protos_len)1897 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1898 unsigned int protos_len)
1899 {
1900 CBS cbs;
1901 int failed = 1;
1902
1903 if (protos == NULL)
1904 protos_len = 0;
1905
1906 CBS_init(&cbs, protos, protos_len);
1907
1908 if (protos_len > 0) {
1909 if (!tlsext_alpn_check_format(&cbs))
1910 goto err;
1911 }
1912
1913 if (!CBS_stow(&cbs, &ssl->alpn_client_proto_list,
1914 &ssl->alpn_client_proto_list_len))
1915 goto err;
1916
1917 failed = 0;
1918
1919 err:
1920 /* NOTE: Return values are the reverse of what you expect. */
1921 return failed;
1922 }
1923 LSSL_ALIAS(SSL_set_alpn_protos);
1924
1925 /*
1926 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during
1927 * ClientHello processing in order to select an ALPN protocol from the
1928 * client's list of offered protocols.
1929 */
1930 void
SSL_CTX_set_alpn_select_cb(SSL_CTX * ctx,int (* cb)(SSL * ssl,const unsigned char ** out,unsigned char * outlen,const unsigned char * in,unsigned int inlen,void * arg),void * arg)1931 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
1932 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen,
1933 const unsigned char *in, unsigned int inlen, void *arg), void *arg)
1934 {
1935 ctx->alpn_select_cb = cb;
1936 ctx->alpn_select_cb_arg = arg;
1937 }
1938 LSSL_ALIAS(SSL_CTX_set_alpn_select_cb);
1939
1940 /*
1941 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return
1942 * it sets data to point to len bytes of protocol name (not including the
1943 * leading length-prefix byte). If the server didn't respond with* a negotiated
1944 * protocol then len will be zero.
1945 */
1946 void
SSL_get0_alpn_selected(const SSL * ssl,const unsigned char ** data,unsigned int * len)1947 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1948 unsigned int *len)
1949 {
1950 *data = ssl->s3->alpn_selected;
1951 *len = ssl->s3->alpn_selected_len;
1952 }
1953 LSSL_ALIAS(SSL_get0_alpn_selected);
1954
1955 void
SSL_set_psk_use_session_callback(SSL * s,SSL_psk_use_session_cb_func cb)1956 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
1957 {
1958 return;
1959 }
1960 LSSL_ALIAS(SSL_set_psk_use_session_callback);
1961
1962 int
SSL_export_keying_material(SSL * s,unsigned char * out,size_t out_len,const char * label,size_t label_len,const unsigned char * context,size_t context_len,int use_context)1963 SSL_export_keying_material(SSL *s, unsigned char *out, size_t out_len,
1964 const char *label, size_t label_len, const unsigned char *context,
1965 size_t context_len, int use_context)
1966 {
1967 if (s->tls13 != NULL && s->version == TLS1_3_VERSION) {
1968 if (!use_context) {
1969 context = NULL;
1970 context_len = 0;
1971 }
1972 return tls13_exporter(s->tls13, label, label_len, context,
1973 context_len, out, out_len);
1974 }
1975
1976 return tls12_exporter(s, label, label_len, context, context_len,
1977 use_context, out, out_len);
1978 }
1979 LSSL_ALIAS(SSL_export_keying_material);
1980
1981 static unsigned long
ssl_session_hash(const SSL_SESSION * a)1982 ssl_session_hash(const SSL_SESSION *a)
1983 {
1984 unsigned long l;
1985
1986 l = (unsigned long)
1987 ((unsigned int) a->session_id[0] )|
1988 ((unsigned int) a->session_id[1]<< 8L)|
1989 ((unsigned long)a->session_id[2]<<16L)|
1990 ((unsigned long)a->session_id[3]<<24L);
1991 return (l);
1992 }
1993
1994 /*
1995 * NB: If this function (or indeed the hash function which uses a sort of
1996 * coarser function than this one) is changed, ensure
1997 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1998 * able to construct an SSL_SESSION that will collide with any existing session
1999 * with a matching session ID.
2000 */
2001 static int
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)2002 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2003 {
2004 if (a->ssl_version != b->ssl_version)
2005 return (1);
2006 if (a->session_id_length != b->session_id_length)
2007 return (1);
2008 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0)
2009 return (1);
2010 return (0);
2011 }
2012
2013 /*
2014 * These wrapper functions should remain rather than redeclaring
2015 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2016 * variable. The reason is that the functions aren't static, they're exposed via
2017 * ssl.h.
2018 */
2019 static unsigned long
ssl_session_LHASH_HASH(const void * arg)2020 ssl_session_LHASH_HASH(const void *arg)
2021 {
2022 const SSL_SESSION *a = arg;
2023
2024 return ssl_session_hash(a);
2025 }
2026
2027 static int
ssl_session_LHASH_COMP(const void * arg1,const void * arg2)2028 ssl_session_LHASH_COMP(const void *arg1, const void *arg2)
2029 {
2030 const SSL_SESSION *a = arg1;
2031 const SSL_SESSION *b = arg2;
2032
2033 return ssl_session_cmp(a, b);
2034 }
2035
2036 SSL_CTX *
SSL_CTX_new(const SSL_METHOD * meth)2037 SSL_CTX_new(const SSL_METHOD *meth)
2038 {
2039 SSL_CTX *ret;
2040
2041 if (!OPENSSL_init_ssl(0, NULL)) {
2042 SSLerrorx(SSL_R_LIBRARY_BUG);
2043 return (NULL);
2044 }
2045
2046 if (meth == NULL) {
2047 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED);
2048 return (NULL);
2049 }
2050
2051 if ((ret = calloc(1, sizeof(*ret))) == NULL) {
2052 SSLerrorx(ERR_R_MALLOC_FAILURE);
2053 return (NULL);
2054 }
2055
2056 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2057 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2058 goto err;
2059 }
2060
2061 ret->method = meth;
2062 ret->min_tls_version = meth->min_tls_version;
2063 ret->max_tls_version = meth->max_tls_version;
2064 ret->min_proto_version = 0;
2065 ret->max_proto_version = 0;
2066 ret->mode = SSL_MODE_AUTO_RETRY;
2067
2068 ret->cert_store = NULL;
2069 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2070 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2071 ret->session_cache_head = NULL;
2072 ret->session_cache_tail = NULL;
2073
2074 /* We take the system default */
2075 ret->session_timeout = ssl_get_default_timeout();
2076
2077 ret->new_session_cb = NULL;
2078 ret->remove_session_cb = NULL;
2079 ret->get_session_cb = NULL;
2080 ret->generate_session_id = NULL;
2081
2082 memset((char *)&ret->stats, 0, sizeof(ret->stats));
2083
2084 ret->references = 1;
2085 ret->quiet_shutdown = 0;
2086
2087 ret->info_callback = NULL;
2088
2089 ret->app_verify_callback = NULL;
2090 ret->app_verify_arg = NULL;
2091
2092 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2093 ret->read_ahead = 0;
2094 ret->msg_callback = NULL;
2095 ret->msg_callback_arg = NULL;
2096 ret->verify_mode = SSL_VERIFY_NONE;
2097 ret->sid_ctx_length = 0;
2098 ret->default_verify_callback = NULL;
2099
2100 if ((ret->cert = ssl_cert_new()) == NULL)
2101 goto err;
2102
2103 ret->default_passwd_callback = NULL;
2104 ret->default_passwd_callback_userdata = NULL;
2105 ret->client_cert_cb = NULL;
2106 ret->app_gen_cookie_cb = NULL;
2107 ret->app_verify_cookie_cb = NULL;
2108
2109 ret->sessions = lh_SSL_SESSION_new();
2110 if (ret->sessions == NULL)
2111 goto err;
2112 ret->cert_store = X509_STORE_new();
2113 if (ret->cert_store == NULL)
2114 goto err;
2115
2116 ssl_create_cipher_list(ret->method, &ret->cipher_list,
2117 NULL, SSL_DEFAULT_CIPHER_LIST, ret->cert);
2118 if (ret->cipher_list == NULL ||
2119 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2120 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS);
2121 goto err2;
2122 }
2123
2124 ret->param = X509_VERIFY_PARAM_new();
2125 if (!ret->param)
2126 goto err;
2127
2128 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2129 goto err;
2130
2131 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2132
2133 ret->extra_certs = NULL;
2134
2135 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2136
2137 ret->tlsext_servername_callback = 0;
2138 ret->tlsext_servername_arg = NULL;
2139
2140 /* Setup RFC4507 ticket keys */
2141 arc4random_buf(ret->tlsext_tick_key_name, 16);
2142 arc4random_buf(ret->tlsext_tick_hmac_key, 16);
2143 arc4random_buf(ret->tlsext_tick_aes_key, 16);
2144
2145 ret->tlsext_status_cb = 0;
2146 ret->tlsext_status_arg = NULL;
2147
2148 /*
2149 * Default is to connect to non-RI servers. When RI is more widely
2150 * deployed might change this.
2151 */
2152 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2153
2154 return (ret);
2155 err:
2156 SSLerrorx(ERR_R_MALLOC_FAILURE);
2157 err2:
2158 SSL_CTX_free(ret);
2159 return (NULL);
2160 }
2161 LSSL_ALIAS(SSL_CTX_new);
2162
2163 void
SSL_CTX_free(SSL_CTX * ctx)2164 SSL_CTX_free(SSL_CTX *ctx)
2165 {
2166 int i;
2167
2168 if (ctx == NULL)
2169 return;
2170
2171 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX);
2172 if (i > 0)
2173 return;
2174
2175 X509_VERIFY_PARAM_free(ctx->param);
2176
2177 /*
2178 * Free internal session cache. However: the remove_cb() may reference
2179 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2180 * after the sessions were flushed.
2181 * As the ex_data handling routines might also touch the session cache,
2182 * the most secure solution seems to be: empty (flush) the cache, then
2183 * free ex_data, then finally free the cache.
2184 * (See ticket [openssl.org #212].)
2185 */
2186 if (ctx->sessions != NULL)
2187 SSL_CTX_flush_sessions(ctx, 0);
2188
2189 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->ex_data);
2190
2191 lh_SSL_SESSION_free(ctx->sessions);
2192
2193 X509_STORE_free(ctx->cert_store);
2194 sk_SSL_CIPHER_free(ctx->cipher_list);
2195 sk_SSL_CIPHER_free(ctx->cipher_list_tls13);
2196 ssl_cert_free(ctx->cert);
2197 sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free);
2198 sk_X509_pop_free(ctx->extra_certs, X509_free);
2199
2200 #ifndef OPENSSL_NO_SRTP
2201 if (ctx->srtp_profiles)
2202 sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles);
2203 #endif
2204
2205 free(ctx->tlsext_ecpointformatlist);
2206 free(ctx->tlsext_supportedgroups);
2207
2208 free(ctx->alpn_client_proto_list);
2209
2210 free(ctx);
2211 }
2212 LSSL_ALIAS(SSL_CTX_free);
2213
2214 int
SSL_CTX_up_ref(SSL_CTX * ctx)2215 SSL_CTX_up_ref(SSL_CTX *ctx)
2216 {
2217 return CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX) > 1;
2218 }
2219 LSSL_ALIAS(SSL_CTX_up_ref);
2220
2221 pem_password_cb *
SSL_CTX_get_default_passwd_cb(SSL_CTX * ctx)2222 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2223 {
2224 return (ctx->default_passwd_callback);
2225 }
2226 LSSL_ALIAS(SSL_CTX_get_default_passwd_cb);
2227
2228 void
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)2229 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2230 {
2231 ctx->default_passwd_callback = cb;
2232 }
2233 LSSL_ALIAS(SSL_CTX_set_default_passwd_cb);
2234
2235 void *
SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX * ctx)2236 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2237 {
2238 return ctx->default_passwd_callback_userdata;
2239 }
2240 LSSL_ALIAS(SSL_CTX_get_default_passwd_cb_userdata);
2241
2242 void
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)2243 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2244 {
2245 ctx->default_passwd_callback_userdata = u;
2246 }
2247 LSSL_ALIAS(SSL_CTX_set_default_passwd_cb_userdata);
2248
2249 void
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)2250 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2251 int (*cb)(X509_STORE_CTX *, void *), void *arg)
2252 {
2253 ctx->app_verify_callback = cb;
2254 ctx->app_verify_arg = arg;
2255 }
2256 LSSL_ALIAS(SSL_CTX_set_cert_verify_callback);
2257
2258 void
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))2259 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *))
2260 {
2261 ctx->verify_mode = mode;
2262 ctx->default_verify_callback = cb;
2263 }
2264 LSSL_ALIAS(SSL_CTX_set_verify);
2265
2266 void
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)2267 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2268 {
2269 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2270 }
2271 LSSL_ALIAS(SSL_CTX_set_verify_depth);
2272
2273 void
ssl_set_cert_masks(SSL_CERT * c,const SSL_CIPHER * cipher)2274 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher)
2275 {
2276 unsigned long mask_a, mask_k;
2277 SSL_CERT_PKEY *cpk;
2278
2279 if (c == NULL)
2280 return;
2281
2282 mask_a = SSL_aNULL | SSL_aTLS1_3;
2283 mask_k = SSL_kECDHE | SSL_kTLS1_3;
2284
2285 if (c->dhe_params != NULL || c->dhe_params_cb != NULL ||
2286 c->dhe_params_auto != 0)
2287 mask_k |= SSL_kDHE;
2288
2289 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2290 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2291 /* Key usage, if present, must allow signing. */
2292 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE)
2293 mask_a |= SSL_aECDSA;
2294 }
2295
2296 cpk = &(c->pkeys[SSL_PKEY_RSA]);
2297 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2298 mask_a |= SSL_aRSA;
2299 mask_k |= SSL_kRSA;
2300 }
2301
2302 c->mask_k = mask_k;
2303 c->mask_a = mask_a;
2304 c->valid = 1;
2305 }
2306
2307 /* See if this handshake is using an ECC cipher suite. */
2308 int
ssl_using_ecc_cipher(SSL * s)2309 ssl_using_ecc_cipher(SSL *s)
2310 {
2311 unsigned long alg_a, alg_k;
2312
2313 alg_a = s->s3->hs.cipher->algorithm_auth;
2314 alg_k = s->s3->hs.cipher->algorithm_mkey;
2315
2316 return s->session->tlsext_ecpointformatlist != NULL &&
2317 s->session->tlsext_ecpointformatlist_length > 0 &&
2318 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA));
2319 }
2320
2321 int
ssl_check_srvr_ecc_cert_and_alg(SSL * s,X509 * x)2322 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x)
2323 {
2324 const SSL_CIPHER *cs = s->s3->hs.cipher;
2325 unsigned long alg_a;
2326
2327 alg_a = cs->algorithm_auth;
2328
2329 if (alg_a & SSL_aECDSA) {
2330 /* Key usage, if present, must allow signing. */
2331 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2332 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2333 return (0);
2334 }
2335 }
2336
2337 return (1);
2338 }
2339
2340 SSL_CERT_PKEY *
ssl_get_server_send_pkey(const SSL * s)2341 ssl_get_server_send_pkey(const SSL *s)
2342 {
2343 unsigned long alg_a;
2344 SSL_CERT *c;
2345 int i;
2346
2347 c = s->cert;
2348 ssl_set_cert_masks(c, s->s3->hs.cipher);
2349
2350 alg_a = s->s3->hs.cipher->algorithm_auth;
2351
2352 if (alg_a & SSL_aECDSA) {
2353 i = SSL_PKEY_ECC;
2354 } else if (alg_a & SSL_aRSA) {
2355 i = SSL_PKEY_RSA;
2356 } else { /* if (alg_a & SSL_aNULL) */
2357 SSLerror(s, ERR_R_INTERNAL_ERROR);
2358 return (NULL);
2359 }
2360
2361 return (c->pkeys + i);
2362 }
2363
2364 EVP_PKEY *
ssl_get_sign_pkey(SSL * s,const SSL_CIPHER * cipher,const EVP_MD ** pmd,const struct ssl_sigalg ** sap)2365 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd,
2366 const struct ssl_sigalg **sap)
2367 {
2368 const struct ssl_sigalg *sigalg = NULL;
2369 EVP_PKEY *pkey = NULL;
2370 unsigned long alg_a;
2371 SSL_CERT *c;
2372 int idx = -1;
2373
2374 alg_a = cipher->algorithm_auth;
2375 c = s->cert;
2376
2377 if (alg_a & SSL_aRSA) {
2378 idx = SSL_PKEY_RSA;
2379 } else if ((alg_a & SSL_aECDSA) &&
2380 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2381 idx = SSL_PKEY_ECC;
2382 if (idx == -1) {
2383 SSLerror(s, ERR_R_INTERNAL_ERROR);
2384 return (NULL);
2385 }
2386
2387 pkey = c->pkeys[idx].privatekey;
2388 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) {
2389 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2390 return (NULL);
2391 }
2392 *pmd = sigalg->md();
2393 *sap = sigalg;
2394
2395 return (pkey);
2396 }
2397
2398 size_t
ssl_dhe_params_auto_key_bits(SSL * s)2399 ssl_dhe_params_auto_key_bits(SSL *s)
2400 {
2401 SSL_CERT_PKEY *cpk;
2402 int key_bits;
2403
2404 if (s->cert->dhe_params_auto == 2) {
2405 key_bits = 1024;
2406 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) {
2407 key_bits = 1024;
2408 if (s->s3->hs.cipher->strength_bits == 256)
2409 key_bits = 3072;
2410 } else {
2411 if ((cpk = ssl_get_server_send_pkey(s)) == NULL)
2412 return 0;
2413 if (cpk->privatekey == NULL ||
2414 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL)
2415 return 0;
2416 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0)
2417 return 0;
2418 }
2419
2420 return key_bits;
2421 }
2422
2423 static int
ssl_should_update_external_cache(SSL * s,int mode)2424 ssl_should_update_external_cache(SSL *s, int mode)
2425 {
2426 int cache_mode;
2427
2428 cache_mode = s->session_ctx->session_cache_mode;
2429
2430 /* Don't cache if mode says not to */
2431 if ((cache_mode & mode) == 0)
2432 return 0;
2433
2434 /* if it is not already cached, cache it */
2435 if (!s->hit)
2436 return 1;
2437
2438 /* If it's TLS 1.3, do it to match OpenSSL */
2439 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION)
2440 return 1;
2441
2442 return 0;
2443 }
2444
2445 static int
ssl_should_update_internal_cache(SSL * s,int mode)2446 ssl_should_update_internal_cache(SSL *s, int mode)
2447 {
2448 int cache_mode;
2449
2450 cache_mode = s->session_ctx->session_cache_mode;
2451
2452 /* Don't cache if mode says not to */
2453 if ((cache_mode & mode) == 0)
2454 return 0;
2455
2456 /* If it is already cached, don't cache it again */
2457 if (s->hit)
2458 return 0;
2459
2460 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0)
2461 return 0;
2462
2463 /* If we are lesser than TLS 1.3, Cache it. */
2464 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION)
2465 return 1;
2466
2467 /* Below this we consider TLS 1.3 or later */
2468
2469 /* If it's not a server, add it? OpenSSL does this. */
2470 if (!s->server)
2471 return 1;
2472
2473 /* XXX if we support early data / PSK need to add */
2474
2475 /*
2476 * If we have the remove session callback, we will want
2477 * to know about this even if it's a stateless ticket
2478 * from 1.3 so we can know when it is removed.
2479 */
2480 if (s->session_ctx->remove_session_cb != NULL)
2481 return 1;
2482
2483 /* If we have set OP_NO_TICKET, cache it. */
2484 if ((s->options & SSL_OP_NO_TICKET) != 0)
2485 return 1;
2486
2487 /* Otherwise do not cache */
2488 return 0;
2489 }
2490
2491 void
ssl_update_cache(SSL * s,int mode)2492 ssl_update_cache(SSL *s, int mode)
2493 {
2494 int cache_mode, do_callback;
2495
2496 if (s->session->session_id_length == 0)
2497 return;
2498
2499 cache_mode = s->session_ctx->session_cache_mode;
2500 do_callback = ssl_should_update_external_cache(s, mode);
2501
2502 if (ssl_should_update_internal_cache(s, mode)) {
2503 /*
2504 * XXX should we fail if the add to the internal cache
2505 * fails? OpenSSL doesn't care..
2506 */
2507 (void) SSL_CTX_add_session(s->session_ctx, s->session);
2508 }
2509
2510 /*
2511 * Update the "external cache" by calling the new session
2512 * callback if present, even with TLS 1.3 without early data
2513 * "because some application just want to know about the
2514 * creation of a session and aren't doing a full cache".
2515 * Apparently, if they are doing a full cache, they'll have
2516 * some fun, but we endeavour to give application writers the
2517 * same glorious experience they expect from OpenSSL which
2518 * does it this way.
2519 */
2520 if (do_callback && s->session_ctx->new_session_cb != NULL) {
2521 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2522 if (!s->session_ctx->new_session_cb(s, s->session))
2523 SSL_SESSION_free(s->session);
2524 }
2525
2526 /* Auto flush every 255 connections. */
2527 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) &&
2528 (cache_mode & mode) != 0) {
2529 int connections;
2530 if (mode & SSL_SESS_CACHE_CLIENT)
2531 connections = s->session_ctx->stats.sess_connect_good;
2532 else
2533 connections = s->session_ctx->stats.sess_accept_good;
2534 if ((connections & 0xff) == 0xff)
2535 SSL_CTX_flush_sessions(s->session_ctx, time(NULL));
2536 }
2537 }
2538
2539 const SSL_METHOD *
SSL_get_ssl_method(SSL * s)2540 SSL_get_ssl_method(SSL *s)
2541 {
2542 return (s->method);
2543 }
2544 LSSL_ALIAS(SSL_get_ssl_method);
2545
2546 int
SSL_set_ssl_method(SSL * s,const SSL_METHOD * method)2547 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method)
2548 {
2549 int (*handshake_func)(SSL *) = NULL;
2550 int ret = 1;
2551
2552 if (s->method == method)
2553 return (ret);
2554
2555 if (s->handshake_func == s->method->ssl_connect)
2556 handshake_func = method->ssl_connect;
2557 else if (s->handshake_func == s->method->ssl_accept)
2558 handshake_func = method->ssl_accept;
2559
2560 if (s->method->version == method->version) {
2561 s->method = method;
2562 } else {
2563 s->method->ssl_free(s);
2564 s->method = method;
2565 ret = s->method->ssl_new(s);
2566 }
2567 s->handshake_func = handshake_func;
2568
2569 return (ret);
2570 }
2571 LSSL_ALIAS(SSL_set_ssl_method);
2572
2573 int
SSL_get_error(const SSL * s,int i)2574 SSL_get_error(const SSL *s, int i)
2575 {
2576 unsigned long l;
2577 int reason;
2578 BIO *bio;
2579
2580 if (i > 0)
2581 return (SSL_ERROR_NONE);
2582
2583 /*
2584 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2585 * etc, where we do encode the error.
2586 */
2587 if ((l = ERR_peek_error()) != 0) {
2588 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2589 return (SSL_ERROR_SYSCALL);
2590 else
2591 return (SSL_ERROR_SSL);
2592 }
2593
2594 if (SSL_want_read(s)) {
2595 bio = SSL_get_rbio(s);
2596 if (BIO_should_read(bio)) {
2597 return (SSL_ERROR_WANT_READ);
2598 } else if (BIO_should_write(bio)) {
2599 /*
2600 * This one doesn't make too much sense... We never
2601 * try to write to the rbio, and an application
2602 * program where rbio and wbio are separate couldn't
2603 * even know what it should wait for. However if we
2604 * ever set s->rwstate incorrectly (so that we have
2605 * SSL_want_read(s) instead of SSL_want_write(s))
2606 * and rbio and wbio *are* the same, this test works
2607 * around that bug; so it might be safer to keep it.
2608 */
2609 return (SSL_ERROR_WANT_WRITE);
2610 } else if (BIO_should_io_special(bio)) {
2611 reason = BIO_get_retry_reason(bio);
2612 if (reason == BIO_RR_CONNECT)
2613 return (SSL_ERROR_WANT_CONNECT);
2614 else if (reason == BIO_RR_ACCEPT)
2615 return (SSL_ERROR_WANT_ACCEPT);
2616 else
2617 return (SSL_ERROR_SYSCALL); /* unknown */
2618 }
2619 }
2620
2621 if (SSL_want_write(s)) {
2622 bio = SSL_get_wbio(s);
2623 if (BIO_should_write(bio)) {
2624 return (SSL_ERROR_WANT_WRITE);
2625 } else if (BIO_should_read(bio)) {
2626 /*
2627 * See above (SSL_want_read(s) with
2628 * BIO_should_write(bio))
2629 */
2630 return (SSL_ERROR_WANT_READ);
2631 } else if (BIO_should_io_special(bio)) {
2632 reason = BIO_get_retry_reason(bio);
2633 if (reason == BIO_RR_CONNECT)
2634 return (SSL_ERROR_WANT_CONNECT);
2635 else if (reason == BIO_RR_ACCEPT)
2636 return (SSL_ERROR_WANT_ACCEPT);
2637 else
2638 return (SSL_ERROR_SYSCALL);
2639 }
2640 }
2641
2642 if (SSL_want_x509_lookup(s))
2643 return (SSL_ERROR_WANT_X509_LOOKUP);
2644
2645 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2646 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2647 return (SSL_ERROR_ZERO_RETURN);
2648
2649 return (SSL_ERROR_SYSCALL);
2650 }
2651 LSSL_ALIAS(SSL_get_error);
2652
2653 int
SSL_CTX_set_quic_method(SSL_CTX * ctx,const SSL_QUIC_METHOD * quic_method)2654 SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method)
2655 {
2656 if (ctx->method->dtls)
2657 return 0;
2658
2659 ctx->quic_method = quic_method;
2660
2661 return 1;
2662 }
2663 LSSL_ALIAS(SSL_CTX_set_quic_method);
2664
2665 int
SSL_set_quic_method(SSL * ssl,const SSL_QUIC_METHOD * quic_method)2666 SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method)
2667 {
2668 if (ssl->method->dtls)
2669 return 0;
2670
2671 ssl->quic_method = quic_method;
2672
2673 return 1;
2674 }
2675 LSSL_ALIAS(SSL_set_quic_method);
2676
2677 size_t
SSL_quic_max_handshake_flight_len(const SSL * ssl,enum ssl_encryption_level_t level)2678 SSL_quic_max_handshake_flight_len(const SSL *ssl,
2679 enum ssl_encryption_level_t level)
2680 {
2681 size_t flight_len;
2682
2683 /* Limit flights to 16K when there are no large certificate messages. */
2684 flight_len = 16384;
2685
2686 switch (level) {
2687 case ssl_encryption_initial:
2688 return flight_len;
2689
2690 case ssl_encryption_early_data:
2691 /* QUIC does not send EndOfEarlyData. */
2692 return 0;
2693
2694 case ssl_encryption_handshake:
2695 if (ssl->server) {
2696 /*
2697 * Servers may receive Certificate message if configured
2698 * to request client certificates.
2699 */
2700 if ((SSL_get_verify_mode(ssl) & SSL_VERIFY_PEER) != 0 &&
2701 ssl->max_cert_list > flight_len)
2702 flight_len = ssl->max_cert_list;
2703 } else {
2704 /*
2705 * Clients may receive both Certificate message and a
2706 * CertificateRequest message.
2707 */
2708 if (ssl->max_cert_list * 2 > flight_len)
2709 flight_len = ssl->max_cert_list * 2;
2710 }
2711 return flight_len;
2712 case ssl_encryption_application:
2713 /*
2714 * Note there is not actually a bound on the number of
2715 * NewSessionTickets one may send in a row. This level may need
2716 * more involved flow control.
2717 */
2718 return flight_len;
2719 }
2720
2721 return 0;
2722 }
2723 LSSL_ALIAS(SSL_quic_max_handshake_flight_len);
2724
2725 enum ssl_encryption_level_t
SSL_quic_read_level(const SSL * ssl)2726 SSL_quic_read_level(const SSL *ssl)
2727 {
2728 return ssl->s3->hs.tls13.quic_read_level;
2729 }
2730 LSSL_ALIAS(SSL_quic_read_level);
2731
2732 enum ssl_encryption_level_t
SSL_quic_write_level(const SSL * ssl)2733 SSL_quic_write_level(const SSL *ssl)
2734 {
2735 return ssl->s3->hs.tls13.quic_write_level;
2736 }
2737 LSSL_ALIAS(SSL_quic_write_level);
2738
2739 int
SSL_provide_quic_data(SSL * ssl,enum ssl_encryption_level_t level,const uint8_t * data,size_t len)2740 SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level,
2741 const uint8_t *data, size_t len)
2742 {
2743 if (!SSL_is_quic(ssl)) {
2744 SSLerror(ssl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2745 return 0;
2746 }
2747
2748 if (level != SSL_quic_read_level(ssl)) {
2749 SSLerror(ssl, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED);
2750 return 0;
2751 }
2752
2753 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) {
2754 ssl->s3->hs.tls13.quic_read_buffer = tls_buffer_new(0);
2755 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) {
2756 SSLerror(ssl, ERR_R_MALLOC_FAILURE);
2757 return 0;
2758 }
2759 }
2760
2761 /* XXX - note that this does not currently downsize. */
2762 tls_buffer_set_capacity_limit(ssl->s3->hs.tls13.quic_read_buffer,
2763 SSL_quic_max_handshake_flight_len(ssl, level));
2764
2765 /*
2766 * XXX - an append that fails due to exceeding capacity should set
2767 * SSL_R_EXCESSIVE_MESSAGE_SIZE.
2768 */
2769 return tls_buffer_append(ssl->s3->hs.tls13.quic_read_buffer, data, len);
2770 }
2771 LSSL_ALIAS(SSL_provide_quic_data);
2772
2773 int
SSL_process_quic_post_handshake(SSL * ssl)2774 SSL_process_quic_post_handshake(SSL *ssl)
2775 {
2776 /* XXX - this needs to run PHH received. */
2777 return 1;
2778 }
2779 LSSL_ALIAS(SSL_process_quic_post_handshake);
2780
2781 int
SSL_do_handshake(SSL * s)2782 SSL_do_handshake(SSL *s)
2783 {
2784 if (s->handshake_func == NULL) {
2785 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET);
2786 return (-1);
2787 }
2788
2789 s->method->ssl_renegotiate_check(s);
2790
2791 if (!SSL_in_init(s) && !SSL_in_before(s))
2792 return 1;
2793
2794 return s->handshake_func(s);
2795 }
2796 LSSL_ALIAS(SSL_do_handshake);
2797
2798 /*
2799 * For the next 2 functions, SSL_clear() sets shutdown and so
2800 * one of these calls will reset it
2801 */
2802 void
SSL_set_accept_state(SSL * s)2803 SSL_set_accept_state(SSL *s)
2804 {
2805 s->server = 1;
2806 s->shutdown = 0;
2807 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE;
2808 s->handshake_func = s->method->ssl_accept;
2809 ssl_clear_cipher_state(s);
2810 }
2811 LSSL_ALIAS(SSL_set_accept_state);
2812
2813 void
SSL_set_connect_state(SSL * s)2814 SSL_set_connect_state(SSL *s)
2815 {
2816 s->server = 0;
2817 s->shutdown = 0;
2818 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE;
2819 s->handshake_func = s->method->ssl_connect;
2820 ssl_clear_cipher_state(s);
2821 }
2822 LSSL_ALIAS(SSL_set_connect_state);
2823
2824 int
ssl_undefined_function(SSL * s)2825 ssl_undefined_function(SSL *s)
2826 {
2827 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2828 return (0);
2829 }
2830
2831 int
ssl_undefined_void_function(void)2832 ssl_undefined_void_function(void)
2833 {
2834 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2835 return (0);
2836 }
2837
2838 int
ssl_undefined_const_function(const SSL * s)2839 ssl_undefined_const_function(const SSL *s)
2840 {
2841 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2842 return (0);
2843 }
2844
2845 const char *
ssl_version_string(int ver)2846 ssl_version_string(int ver)
2847 {
2848 switch (ver) {
2849 case TLS1_VERSION:
2850 return (SSL_TXT_TLSV1);
2851 case TLS1_1_VERSION:
2852 return (SSL_TXT_TLSV1_1);
2853 case TLS1_2_VERSION:
2854 return (SSL_TXT_TLSV1_2);
2855 case TLS1_3_VERSION:
2856 return (SSL_TXT_TLSV1_3);
2857 case DTLS1_VERSION:
2858 return (SSL_TXT_DTLS1);
2859 case DTLS1_2_VERSION:
2860 return (SSL_TXT_DTLS1_2);
2861 default:
2862 return ("unknown");
2863 }
2864 }
2865
2866 const char *
SSL_get_version(const SSL * s)2867 SSL_get_version(const SSL *s)
2868 {
2869 return ssl_version_string(s->version);
2870 }
2871 LSSL_ALIAS(SSL_get_version);
2872
2873 SSL *
SSL_dup(SSL * s)2874 SSL_dup(SSL *s)
2875 {
2876 STACK_OF(X509_NAME) *sk;
2877 X509_NAME *xn;
2878 SSL *ret;
2879 int i;
2880
2881 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2882 goto err;
2883
2884 ret->version = s->version;
2885 ret->method = s->method;
2886
2887 if (s->session != NULL) {
2888 if (!SSL_copy_session_id(ret, s))
2889 goto err;
2890 } else {
2891 /*
2892 * No session has been established yet, so we have to expect
2893 * that s->cert or ret->cert will be changed later --
2894 * they should not both point to the same object,
2895 * and thus we can't use SSL_copy_session_id.
2896 */
2897
2898 ret->method->ssl_free(ret);
2899 ret->method = s->method;
2900 ret->method->ssl_new(ret);
2901
2902 ssl_cert_free(ret->cert);
2903 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL)
2904 goto err;
2905
2906 if (!SSL_set_session_id_context(ret, s->sid_ctx,
2907 s->sid_ctx_length))
2908 goto err;
2909 }
2910
2911 ret->options = s->options;
2912 ret->mode = s->mode;
2913 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2914 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2915 ret->msg_callback = s->msg_callback;
2916 ret->msg_callback_arg = s->msg_callback_arg;
2917 SSL_set_verify(ret, SSL_get_verify_mode(s),
2918 SSL_get_verify_callback(s));
2919 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2920 ret->generate_session_id = s->generate_session_id;
2921
2922 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2923
2924 /* copy app data, a little dangerous perhaps */
2925 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL,
2926 &ret->ex_data, &s->ex_data))
2927 goto err;
2928
2929 /* setup rbio, and wbio */
2930 if (s->rbio != NULL) {
2931 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2932 goto err;
2933 }
2934 if (s->wbio != NULL) {
2935 if (s->wbio != s->rbio) {
2936 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2937 goto err;
2938 } else
2939 ret->wbio = ret->rbio;
2940 }
2941 ret->rwstate = s->rwstate;
2942 ret->in_handshake = s->in_handshake;
2943 ret->handshake_func = s->handshake_func;
2944 ret->server = s->server;
2945 ret->renegotiate = s->renegotiate;
2946 ret->new_session = s->new_session;
2947 ret->quiet_shutdown = s->quiet_shutdown;
2948 ret->shutdown = s->shutdown;
2949 /* SSL_dup does not really work at any state, though */
2950 ret->s3->hs.state = s->s3->hs.state;
2951 ret->rstate = s->rstate;
2952
2953 /*
2954 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num,
2955 * ret->init_off
2956 */
2957 ret->init_num = 0;
2958
2959 ret->hit = s->hit;
2960
2961 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2962
2963 if (s->cipher_list != NULL) {
2964 if ((ret->cipher_list =
2965 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2966 goto err;
2967 }
2968 if (s->cipher_list_tls13 != NULL) {
2969 if ((ret->cipher_list_tls13 =
2970 sk_SSL_CIPHER_dup(s->cipher_list_tls13)) == NULL)
2971 goto err;
2972 }
2973
2974 /* Dup the client_CA list */
2975 if (s->client_CA != NULL) {
2976 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2977 ret->client_CA = sk;
2978 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2979 xn = sk_X509_NAME_value(sk, i);
2980 if (sk_X509_NAME_set(sk, i,
2981 X509_NAME_dup(xn)) == NULL) {
2982 X509_NAME_free(xn);
2983 goto err;
2984 }
2985 }
2986 }
2987
2988 return ret;
2989 err:
2990 SSL_free(ret);
2991 return NULL;
2992 }
2993 LSSL_ALIAS(SSL_dup);
2994
2995 void
ssl_clear_cipher_state(SSL * s)2996 ssl_clear_cipher_state(SSL *s)
2997 {
2998 tls12_record_layer_clear_read_state(s->rl);
2999 tls12_record_layer_clear_write_state(s->rl);
3000 }
3001
3002 void
ssl_info_callback(const SSL * s,int type,int value)3003 ssl_info_callback(const SSL *s, int type, int value)
3004 {
3005 ssl_info_callback_fn *cb;
3006
3007 if ((cb = s->info_callback) == NULL)
3008 cb = s->ctx->info_callback;
3009 if (cb != NULL)
3010 cb(s, type, value);
3011 }
3012
3013 void
ssl_msg_callback(SSL * s,int is_write,int content_type,const void * msg_buf,size_t msg_len)3014 ssl_msg_callback(SSL *s, int is_write, int content_type,
3015 const void *msg_buf, size_t msg_len)
3016 {
3017 if (s->msg_callback == NULL)
3018 return;
3019
3020 s->msg_callback(is_write, s->version, content_type,
3021 msg_buf, msg_len, s, s->msg_callback_arg);
3022 }
3023
3024 void
ssl_msg_callback_cbs(SSL * s,int is_write,int content_type,CBS * cbs)3025 ssl_msg_callback_cbs(SSL *s, int is_write, int content_type, CBS *cbs)
3026 {
3027 ssl_msg_callback(s, is_write, content_type, CBS_data(cbs), CBS_len(cbs));
3028 }
3029
3030 /* Fix this function so that it takes an optional type parameter */
3031 X509 *
SSL_get_certificate(const SSL * s)3032 SSL_get_certificate(const SSL *s)
3033 {
3034 return (s->cert->key->x509);
3035 }
3036 LSSL_ALIAS(SSL_get_certificate);
3037
3038 /* Fix this function so that it takes an optional type parameter */
3039 EVP_PKEY *
SSL_get_privatekey(const SSL * s)3040 SSL_get_privatekey(const SSL *s)
3041 {
3042 return (s->cert->key->privatekey);
3043 }
3044 LSSL_ALIAS(SSL_get_privatekey);
3045
3046 const SSL_CIPHER *
SSL_get_current_cipher(const SSL * s)3047 SSL_get_current_cipher(const SSL *s)
3048 {
3049 if ((s->session != NULL) && (s->session->cipher != NULL))
3050 return (s->session->cipher);
3051 return (NULL);
3052 }
3053 LSSL_ALIAS(SSL_get_current_cipher);
3054 const void *
SSL_get_current_compression(SSL * s)3055 SSL_get_current_compression(SSL *s)
3056 {
3057 return (NULL);
3058 }
3059 LSSL_ALIAS(SSL_get_current_compression);
3060
3061 const void *
SSL_get_current_expansion(SSL * s)3062 SSL_get_current_expansion(SSL *s)
3063 {
3064 return (NULL);
3065 }
3066 LSSL_ALIAS(SSL_get_current_expansion);
3067
3068 size_t
SSL_get_client_random(const SSL * s,unsigned char * out,size_t max_out)3069 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out)
3070 {
3071 size_t len = sizeof(s->s3->client_random);
3072
3073 if (out == NULL)
3074 return len;
3075
3076 if (len > max_out)
3077 len = max_out;
3078
3079 memcpy(out, s->s3->client_random, len);
3080
3081 return len;
3082 }
3083 LSSL_ALIAS(SSL_get_client_random);
3084
3085 size_t
SSL_get_server_random(const SSL * s,unsigned char * out,size_t max_out)3086 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out)
3087 {
3088 size_t len = sizeof(s->s3->server_random);
3089
3090 if (out == NULL)
3091 return len;
3092
3093 if (len > max_out)
3094 len = max_out;
3095
3096 memcpy(out, s->s3->server_random, len);
3097
3098 return len;
3099 }
3100 LSSL_ALIAS(SSL_get_server_random);
3101
3102 int
ssl_init_wbio_buffer(SSL * s,int push)3103 ssl_init_wbio_buffer(SSL *s, int push)
3104 {
3105 BIO *bbio;
3106
3107 if (s->bbio == NULL) {
3108 bbio = BIO_new(BIO_f_buffer());
3109 if (bbio == NULL)
3110 return (0);
3111 s->bbio = bbio;
3112 } else {
3113 bbio = s->bbio;
3114 if (s->bbio == s->wbio)
3115 s->wbio = BIO_pop(s->wbio);
3116 }
3117 (void)BIO_reset(bbio);
3118 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3119 if (!BIO_set_read_buffer_size(bbio, 1)) {
3120 SSLerror(s, ERR_R_BUF_LIB);
3121 return (0);
3122 }
3123 if (push) {
3124 if (s->wbio != bbio)
3125 s->wbio = BIO_push(bbio, s->wbio);
3126 } else {
3127 if (s->wbio == bbio)
3128 s->wbio = BIO_pop(bbio);
3129 }
3130 return (1);
3131 }
3132
3133 void
ssl_free_wbio_buffer(SSL * s)3134 ssl_free_wbio_buffer(SSL *s)
3135 {
3136 if (s == NULL)
3137 return;
3138
3139 if (s->bbio == NULL)
3140 return;
3141
3142 if (s->bbio == s->wbio) {
3143 /* remove buffering */
3144 s->wbio = BIO_pop(s->wbio);
3145 }
3146 BIO_free(s->bbio);
3147 s->bbio = NULL;
3148 }
3149
3150 void
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)3151 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3152 {
3153 ctx->quiet_shutdown = mode;
3154 }
3155 LSSL_ALIAS(SSL_CTX_set_quiet_shutdown);
3156
3157 int
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)3158 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3159 {
3160 return (ctx->quiet_shutdown);
3161 }
3162 LSSL_ALIAS(SSL_CTX_get_quiet_shutdown);
3163
3164 void
SSL_set_quiet_shutdown(SSL * s,int mode)3165 SSL_set_quiet_shutdown(SSL *s, int mode)
3166 {
3167 s->quiet_shutdown = mode;
3168 }
3169 LSSL_ALIAS(SSL_set_quiet_shutdown);
3170
3171 int
SSL_get_quiet_shutdown(const SSL * s)3172 SSL_get_quiet_shutdown(const SSL *s)
3173 {
3174 return (s->quiet_shutdown);
3175 }
3176 LSSL_ALIAS(SSL_get_quiet_shutdown);
3177
3178 void
SSL_set_shutdown(SSL * s,int mode)3179 SSL_set_shutdown(SSL *s, int mode)
3180 {
3181 s->shutdown = mode;
3182 }
3183 LSSL_ALIAS(SSL_set_shutdown);
3184
3185 int
SSL_get_shutdown(const SSL * s)3186 SSL_get_shutdown(const SSL *s)
3187 {
3188 return (s->shutdown);
3189 }
3190 LSSL_ALIAS(SSL_get_shutdown);
3191
3192 int
SSL_version(const SSL * s)3193 SSL_version(const SSL *s)
3194 {
3195 return (s->version);
3196 }
3197 LSSL_ALIAS(SSL_version);
3198
3199 SSL_CTX *
SSL_get_SSL_CTX(const SSL * ssl)3200 SSL_get_SSL_CTX(const SSL *ssl)
3201 {
3202 return (ssl->ctx);
3203 }
3204 LSSL_ALIAS(SSL_get_SSL_CTX);
3205
3206 SSL_CTX *
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)3207 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
3208 {
3209 SSL_CERT *new_cert;
3210
3211 if (ctx == NULL)
3212 ctx = ssl->initial_ctx;
3213 if (ssl->ctx == ctx)
3214 return (ssl->ctx);
3215
3216 if ((new_cert = ssl_cert_dup(ctx->cert)) == NULL)
3217 return NULL;
3218 ssl_cert_free(ssl->cert);
3219 ssl->cert = new_cert;
3220
3221 SSL_CTX_up_ref(ctx);
3222 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3223 ssl->ctx = ctx;
3224
3225 return (ssl->ctx);
3226 }
3227 LSSL_ALIAS(SSL_set_SSL_CTX);
3228
3229 int
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)3230 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3231 {
3232 return (X509_STORE_set_default_paths(ctx->cert_store));
3233 }
3234 LSSL_ALIAS(SSL_CTX_set_default_verify_paths);
3235
3236 int
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)3237 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3238 const char *CApath)
3239 {
3240 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3241 }
3242 LSSL_ALIAS(SSL_CTX_load_verify_locations);
3243
3244 int
SSL_CTX_load_verify_mem(SSL_CTX * ctx,void * buf,int len)3245 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len)
3246 {
3247 return (X509_STORE_load_mem(ctx->cert_store, buf, len));
3248 }
3249 LSSL_ALIAS(SSL_CTX_load_verify_mem);
3250
3251 void
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))3252 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val))
3253 {
3254 ssl->info_callback = cb;
3255 }
3256 LSSL_ALIAS(SSL_set_info_callback);
3257
SSL_get_info_callback(const SSL * ssl)3258 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val)
3259 {
3260 return (ssl->info_callback);
3261 }
3262 LSSL_ALIAS(SSL_get_info_callback);
3263
3264 int
SSL_state(const SSL * ssl)3265 SSL_state(const SSL *ssl)
3266 {
3267 return (ssl->s3->hs.state);
3268 }
3269 LSSL_ALIAS(SSL_state);
3270
3271 void
SSL_set_state(SSL * ssl,int state)3272 SSL_set_state(SSL *ssl, int state)
3273 {
3274 ssl->s3->hs.state = state;
3275 }
3276 LSSL_ALIAS(SSL_set_state);
3277
3278 void
SSL_set_verify_result(SSL * ssl,long arg)3279 SSL_set_verify_result(SSL *ssl, long arg)
3280 {
3281 ssl->verify_result = arg;
3282 }
3283 LSSL_ALIAS(SSL_set_verify_result);
3284
3285 long
SSL_get_verify_result(const SSL * ssl)3286 SSL_get_verify_result(const SSL *ssl)
3287 {
3288 return (ssl->verify_result);
3289 }
3290 LSSL_ALIAS(SSL_get_verify_result);
3291
3292 int
SSL_verify_client_post_handshake(SSL * ssl)3293 SSL_verify_client_post_handshake(SSL *ssl)
3294 {
3295 return 0;
3296 }
3297 LSSL_ALIAS(SSL_verify_client_post_handshake);
3298
3299 void
SSL_CTX_set_post_handshake_auth(SSL_CTX * ctx,int val)3300 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
3301 {
3302 return;
3303 }
3304 LSSL_ALIAS(SSL_CTX_set_post_handshake_auth);
3305
3306 void
SSL_set_post_handshake_auth(SSL * ssl,int val)3307 SSL_set_post_handshake_auth(SSL *ssl, int val)
3308 {
3309 return;
3310 }
3311 LSSL_ALIAS(SSL_set_post_handshake_auth);
3312
3313 int
SSL_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)3314 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3315 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3316 {
3317 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3318 new_func, dup_func, free_func));
3319 }
3320 LSSL_ALIAS(SSL_get_ex_new_index);
3321
3322 int
SSL_set_ex_data(SSL * s,int idx,void * arg)3323 SSL_set_ex_data(SSL *s, int idx, void *arg)
3324 {
3325 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3326 }
3327 LSSL_ALIAS(SSL_set_ex_data);
3328
3329 void *
SSL_get_ex_data(const SSL * s,int idx)3330 SSL_get_ex_data(const SSL *s, int idx)
3331 {
3332 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3333 }
3334 LSSL_ALIAS(SSL_get_ex_data);
3335
3336 int
SSL_CTX_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)3337 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3338 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3339 {
3340 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3341 new_func, dup_func, free_func));
3342 }
3343 LSSL_ALIAS(SSL_CTX_get_ex_new_index);
3344
3345 int
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)3346 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3347 {
3348 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3349 }
3350 LSSL_ALIAS(SSL_CTX_set_ex_data);
3351
3352 void *
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)3353 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3354 {
3355 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3356 }
3357 LSSL_ALIAS(SSL_CTX_get_ex_data);
3358
3359 int
ssl_ok(SSL * s)3360 ssl_ok(SSL *s)
3361 {
3362 return (1);
3363 }
3364
3365 X509_STORE *
SSL_CTX_get_cert_store(const SSL_CTX * ctx)3366 SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3367 {
3368 return (ctx->cert_store);
3369 }
3370 LSSL_ALIAS(SSL_CTX_get_cert_store);
3371
3372 void
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)3373 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3374 {
3375 X509_STORE_free(ctx->cert_store);
3376 ctx->cert_store = store;
3377 }
3378 LSSL_ALIAS(SSL_CTX_set_cert_store);
3379
3380 X509 *
SSL_CTX_get0_certificate(const SSL_CTX * ctx)3381 SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3382 {
3383 if (ctx->cert == NULL)
3384 return NULL;
3385
3386 return ctx->cert->key->x509;
3387 }
3388 LSSL_ALIAS(SSL_CTX_get0_certificate);
3389
3390 EVP_PKEY *
SSL_CTX_get0_privatekey(const SSL_CTX * ctx)3391 SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3392 {
3393 if (ctx->cert == NULL)
3394 return NULL;
3395
3396 return ctx->cert->key->privatekey;
3397 }
3398 LSSL_ALIAS(SSL_CTX_get0_privatekey);
3399
3400 int
SSL_want(const SSL * s)3401 SSL_want(const SSL *s)
3402 {
3403 return (s->rwstate);
3404 }
3405 LSSL_ALIAS(SSL_want);
3406
3407 void
SSL_CTX_set_tmp_rsa_callback(SSL_CTX * ctx,RSA * (* cb)(SSL * ssl,int is_export,int keylength))3408 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export,
3409 int keylength))
3410 {
3411 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3412 }
3413 LSSL_ALIAS(SSL_CTX_set_tmp_rsa_callback);
3414
3415 void
SSL_set_tmp_rsa_callback(SSL * ssl,RSA * (* cb)(SSL * ssl,int is_export,int keylength))3416 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
3417 int keylength))
3418 {
3419 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3420 }
3421 LSSL_ALIAS(SSL_set_tmp_rsa_callback);
3422
3423 void
SSL_CTX_set_tmp_dh_callback(SSL_CTX * ctx,DH * (* dh)(SSL * ssl,int is_export,int keylength))3424 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export,
3425 int keylength))
3426 {
3427 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3428 }
3429 LSSL_ALIAS(SSL_CTX_set_tmp_dh_callback);
3430
3431 void
SSL_set_tmp_dh_callback(SSL * ssl,DH * (* dh)(SSL * ssl,int is_export,int keylength))3432 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export,
3433 int keylength))
3434 {
3435 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3436 }
3437 LSSL_ALIAS(SSL_set_tmp_dh_callback);
3438
3439 void
SSL_CTX_set_tmp_ecdh_callback(SSL_CTX * ctx,EC_KEY * (* ecdh)(SSL * ssl,int is_export,int keylength))3440 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl,
3441 int is_export, int keylength))
3442 {
3443 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3444 (void (*)(void))ecdh);
3445 }
3446 LSSL_ALIAS(SSL_CTX_set_tmp_ecdh_callback);
3447
3448 void
SSL_set_tmp_ecdh_callback(SSL * ssl,EC_KEY * (* ecdh)(SSL * ssl,int is_export,int keylength))3449 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export,
3450 int keylength))
3451 {
3452 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3453 }
3454 LSSL_ALIAS(SSL_set_tmp_ecdh_callback);
3455
3456
3457 void
SSL_CTX_set_msg_callback(SSL_CTX * ctx,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))3458 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version,
3459 int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3460 {
3461 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK,
3462 (void (*)(void))cb);
3463 }
3464 LSSL_ALIAS(SSL_CTX_set_msg_callback);
3465
3466 void
SSL_set_msg_callback(SSL * ssl,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))3467 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version,
3468 int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3469 {
3470 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3471 }
3472 LSSL_ALIAS(SSL_set_msg_callback);
3473
3474 int
SSL_cache_hit(SSL * s)3475 SSL_cache_hit(SSL *s)
3476 {
3477 return (s->hit);
3478 }
3479 LSSL_ALIAS(SSL_cache_hit);
3480
3481 int
SSL_CTX_get_min_proto_version(SSL_CTX * ctx)3482 SSL_CTX_get_min_proto_version(SSL_CTX *ctx)
3483 {
3484 return ctx->min_proto_version;
3485 }
3486 LSSL_ALIAS(SSL_CTX_get_min_proto_version);
3487
3488 int
SSL_CTX_set_min_proto_version(SSL_CTX * ctx,uint16_t version)3489 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version)
3490 {
3491 return ssl_version_set_min(ctx->method, version,
3492 ctx->max_tls_version, &ctx->min_tls_version,
3493 &ctx->min_proto_version);
3494 }
3495 LSSL_ALIAS(SSL_CTX_set_min_proto_version);
3496
3497 int
SSL_CTX_get_max_proto_version(SSL_CTX * ctx)3498 SSL_CTX_get_max_proto_version(SSL_CTX *ctx)
3499 {
3500 return ctx->max_proto_version;
3501 }
3502 LSSL_ALIAS(SSL_CTX_get_max_proto_version);
3503
3504 int
SSL_CTX_set_max_proto_version(SSL_CTX * ctx,uint16_t version)3505 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version)
3506 {
3507 return ssl_version_set_max(ctx->method, version,
3508 ctx->min_tls_version, &ctx->max_tls_version,
3509 &ctx->max_proto_version);
3510 }
3511 LSSL_ALIAS(SSL_CTX_set_max_proto_version);
3512
3513 int
SSL_get_min_proto_version(SSL * ssl)3514 SSL_get_min_proto_version(SSL *ssl)
3515 {
3516 return ssl->min_proto_version;
3517 }
3518 LSSL_ALIAS(SSL_get_min_proto_version);
3519
3520 int
SSL_set_min_proto_version(SSL * ssl,uint16_t version)3521 SSL_set_min_proto_version(SSL *ssl, uint16_t version)
3522 {
3523 return ssl_version_set_min(ssl->method, version,
3524 ssl->max_tls_version, &ssl->min_tls_version,
3525 &ssl->min_proto_version);
3526 }
3527 LSSL_ALIAS(SSL_set_min_proto_version);
3528 int
SSL_get_max_proto_version(SSL * ssl)3529 SSL_get_max_proto_version(SSL *ssl)
3530 {
3531 return ssl->max_proto_version;
3532 }
3533 LSSL_ALIAS(SSL_get_max_proto_version);
3534
3535 int
SSL_set_max_proto_version(SSL * ssl,uint16_t version)3536 SSL_set_max_proto_version(SSL *ssl, uint16_t version)
3537 {
3538 return ssl_version_set_max(ssl->method, version,
3539 ssl->min_tls_version, &ssl->max_tls_version,
3540 &ssl->max_proto_version);
3541 }
3542 LSSL_ALIAS(SSL_set_max_proto_version);
3543
3544 const SSL_METHOD *
SSL_CTX_get_ssl_method(const SSL_CTX * ctx)3545 SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3546 {
3547 return ctx->method;
3548 }
3549 LSSL_ALIAS(SSL_CTX_get_ssl_method);
3550
3551 int
SSL_CTX_get_security_level(const SSL_CTX * ctx)3552 SSL_CTX_get_security_level(const SSL_CTX *ctx)
3553 {
3554 return ctx->cert->security_level;
3555 }
3556 LSSL_ALIAS(SSL_CTX_get_security_level);
3557
3558 void
SSL_CTX_set_security_level(SSL_CTX * ctx,int level)3559 SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3560 {
3561 ctx->cert->security_level = level;
3562 }
3563 LSSL_ALIAS(SSL_CTX_set_security_level);
3564
3565 int
SSL_get_security_level(const SSL * ssl)3566 SSL_get_security_level(const SSL *ssl)
3567 {
3568 return ssl->cert->security_level;
3569 }
3570 LSSL_ALIAS(SSL_get_security_level);
3571
3572 void
SSL_set_security_level(SSL * ssl,int level)3573 SSL_set_security_level(SSL *ssl, int level)
3574 {
3575 ssl->cert->security_level = level;
3576 }
3577 LSSL_ALIAS(SSL_set_security_level);
3578
3579 int
SSL_is_quic(const SSL * ssl)3580 SSL_is_quic(const SSL *ssl)
3581 {
3582 return ssl->quic_method != NULL;
3583 }
3584 LSSL_ALIAS(SSL_is_quic);
3585
3586 int
SSL_set_quic_transport_params(SSL * ssl,const uint8_t * params,size_t params_len)3587 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params,
3588 size_t params_len)
3589 {
3590 freezero(ssl->quic_transport_params,
3591 ssl->quic_transport_params_len);
3592 ssl->quic_transport_params = NULL;
3593 ssl->quic_transport_params_len = 0;
3594
3595 if ((ssl->quic_transport_params = malloc(params_len)) == NULL)
3596 return 0;
3597
3598 memcpy(ssl->quic_transport_params, params, params_len);
3599 ssl->quic_transport_params_len = params_len;
3600
3601 return 1;
3602 }
3603 LSSL_ALIAS(SSL_set_quic_transport_params);
3604
3605 void
SSL_get_peer_quic_transport_params(const SSL * ssl,const uint8_t ** out_params,size_t * out_params_len)3606 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params,
3607 size_t *out_params_len)
3608 {
3609 *out_params = ssl->s3->peer_quic_transport_params;
3610 *out_params_len = ssl->s3->peer_quic_transport_params_len;
3611 }
3612 LSSL_ALIAS(SSL_get_peer_quic_transport_params);
3613
3614 void
SSL_set_quic_use_legacy_codepoint(SSL * ssl,int use_legacy)3615 SSL_set_quic_use_legacy_codepoint(SSL *ssl, int use_legacy)
3616 {
3617 /* Not supported. */
3618 }
3619 LSSL_ALIAS(SSL_set_quic_use_legacy_codepoint);
3620