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Merge commit 'dfc115332c94a2f62058ac7f2bce7631fbd20b3d'
[unleashed/tickless.git] / lib / libssl / ssl_lib.c
blob471fd7009e217eec4dafc5b9bd0f2c813c510ac7
1 /* $OpenBSD: ssl_lib.c,v 1.170 2017/08/30 16:24:21 jsing 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 <stdio.h>
144
145 #include "ssl_locl.h"
146
147 #include <openssl/bn.h>
148 #include <openssl/dh.h>
149 #include <openssl/lhash.h>
150 #include <openssl/objects.h>
151 #include <openssl/ocsp.h>
152 #include <openssl/x509v3.h>
153
154 #ifndef OPENSSL_NO_ENGINE
155 #include <openssl/engine.h>
156 #endif
157
158 #include "bytestring.h"
159
160 const char *SSL_version_str = OPENSSL_VERSION_TEXT;
161
162 int
163 SSL_clear(SSL *s)
164 {
165 if (s->method == NULL) {
166 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED);
167 return (0);
168 }
169
170 if (ssl_clear_bad_session(s)) {
171 SSL_SESSION_free(s->session);
172 s->session = NULL;
173 }
174
175 s->error = 0;
176 s->internal->hit = 0;
177 s->internal->shutdown = 0;
178
179 if (s->internal->renegotiate) {
180 SSLerror(s, ERR_R_INTERNAL_ERROR);
181 return (0);
182 }
183
184 s->internal->type = 0;
185
186 s->version = s->method->internal->version;
187 s->client_version = s->version;
188 s->internal->rwstate = SSL_NOTHING;
189 s->internal->rstate = SSL_ST_READ_HEADER;
190
191 BUF_MEM_free(s->internal->init_buf);
192 s->internal->init_buf = NULL;
193
194 ssl_clear_cipher_ctx(s);
195 ssl_clear_hash_ctx(&s->read_hash);
196 ssl_clear_hash_ctx(&s->internal->write_hash);
197
198 s->internal->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->internal->in_handshake && (s->session == NULL) &&
205 (s->method != s->ctx->method)) {
206 s->method->internal->ssl_free(s);
207 s->method = s->ctx->method;
208 if (!s->method->internal->ssl_new(s))
209 return (0);
210 } else
211 s->method->internal->ssl_clear(s);
212
213 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
214
215 return (1);
216 }
217
218 /* Used to change an SSL_CTXs default SSL method type */
219 int
220 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
221 {
222 STACK_OF(SSL_CIPHER) *sk;
223
224 ctx->method = meth;
225
226 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
227 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST);
228 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
229 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
230 return (0);
231 }
232 return (1);
233 }
234
235 SSL *
236 SSL_new(SSL_CTX *ctx)
237 {
238 SSL *s;
239
240 if (ctx == NULL) {
241 SSLerrorx(SSL_R_NULL_SSL_CTX);
242 return (NULL);
243 }
244 if (ctx->method == NULL) {
245 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
246 return (NULL);
247 }
248
249 if ((s = calloc(1, sizeof(*s))) == NULL) {
250 SSLerrorx(ERR_R_MALLOC_FAILURE);
251 return (NULL);
252 }
253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) {
254 free(s);
255 SSLerrorx(ERR_R_MALLOC_FAILURE);
256 return (NULL);
257 }
258
259 s->internal->min_version = ctx->internal->min_version;
260 s->internal->max_version = ctx->internal->max_version;
261
262 s->internal->options = ctx->internal->options;
263 s->internal->mode = ctx->internal->mode;
264 s->internal->max_cert_list = ctx->internal->max_cert_list;
265
266 if (ctx->internal->cert != NULL) {
267 /*
268 * Earlier library versions used to copy the pointer to
269 * the CERT, not its contents; only when setting new
270 * parameters for the per-SSL copy, ssl_cert_new would be
271 * called (and the direct reference to the per-SSL_CTX
272 * settings would be lost, but those still were indirectly
273 * accessed for various purposes, and for that reason they
274 * used to be known as s->ctx->default_cert).
275 * Now we don't look at the SSL_CTX's CERT after having
276 * duplicated it once.
277 */
278 s->cert = ssl_cert_dup(ctx->internal->cert);
279 if (s->cert == NULL)
280 goto err;
281 } else
282 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
283
284 s->internal->read_ahead = ctx->internal->read_ahead;
285 s->internal->msg_callback = ctx->internal->msg_callback;
286 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg;
287 s->verify_mode = ctx->verify_mode;
288 s->sid_ctx_length = ctx->sid_ctx_length;
289 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
290 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
291 s->internal->verify_callback = ctx->internal->default_verify_callback;
292 s->internal->generate_session_id = ctx->internal->generate_session_id;
293
294 s->param = X509_VERIFY_PARAM_new();
295 if (!s->param)
296 goto err;
297 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
298 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown;
299 s->max_send_fragment = ctx->internal->max_send_fragment;
300
301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
302 s->ctx = ctx;
303 s->internal->tlsext_debug_cb = 0;
304 s->internal->tlsext_debug_arg = NULL;
305 s->internal->tlsext_ticket_expected = 0;
306 s->tlsext_status_type = -1;
307 s->internal->tlsext_status_expected = 0;
308 s->internal->tlsext_ocsp_ids = NULL;
309 s->internal->tlsext_ocsp_exts = NULL;
310 s->internal->tlsext_ocsp_resp = NULL;
311 s->internal->tlsext_ocsp_resplen = -1;
312 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
313 s->initial_ctx = ctx;
314
315 if (ctx->internal->tlsext_ecpointformatlist != NULL) {
316 s->internal->tlsext_ecpointformatlist =
317 calloc(ctx->internal->tlsext_ecpointformatlist_length,
318 sizeof(ctx->internal->tlsext_ecpointformatlist[0]));
319 if (s->internal->tlsext_ecpointformatlist == NULL)
320 goto err;
321 memcpy(s->internal->tlsext_ecpointformatlist,
322 ctx->internal->tlsext_ecpointformatlist,
323 ctx->internal->tlsext_ecpointformatlist_length *
324 sizeof(ctx->internal->tlsext_ecpointformatlist[0]));
325 s->internal->tlsext_ecpointformatlist_length =
326 ctx->internal->tlsext_ecpointformatlist_length;
327 }
328 if (ctx->internal->tlsext_supportedgroups != NULL) {
329 s->internal->tlsext_supportedgroups =
330 calloc(ctx->internal->tlsext_supportedgroups_length,
331 sizeof(ctx->internal->tlsext_supportedgroups));
332 if (s->internal->tlsext_supportedgroups == NULL)
333 goto err;
334 memcpy(s->internal->tlsext_supportedgroups,
335 ctx->internal->tlsext_supportedgroups,
336 ctx->internal->tlsext_supportedgroups_length *
337 sizeof(ctx->internal->tlsext_supportedgroups[0]));
338 s->internal->tlsext_supportedgroups_length =
339 ctx->internal->tlsext_supportedgroups_length;
340 }
341
342 if (s->ctx->internal->alpn_client_proto_list != NULL) {
343 s->internal->alpn_client_proto_list =
344 malloc(s->ctx->internal->alpn_client_proto_list_len);
345 if (s->internal->alpn_client_proto_list == NULL)
346 goto err;
347 memcpy(s->internal->alpn_client_proto_list,
348 s->ctx->internal->alpn_client_proto_list,
349 s->ctx->internal->alpn_client_proto_list_len);
350 s->internal->alpn_client_proto_list_len =
351 s->ctx->internal->alpn_client_proto_list_len;
352 }
353
354 s->verify_result = X509_V_OK;
355
356 s->method = ctx->method;
357
358 if (!s->method->internal->ssl_new(s))
359 goto err;
360
361 s->references = 1;
362 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1;
363
364 SSL_clear(s);
365
366 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data);
367
368 return (s);
369
370 err:
371 SSL_free(s);
372 SSLerrorx(ERR_R_MALLOC_FAILURE);
373 return (NULL);
374 }
375
376 int
377 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
378 unsigned int sid_ctx_len)
379 {
380 if (sid_ctx_len > sizeof ctx->sid_ctx) {
381 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
382 return (0);
383 }
384 ctx->sid_ctx_length = sid_ctx_len;
385 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
386
387 return (1);
388 }
389
390 int
391 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
392 unsigned int sid_ctx_len)
393 {
394 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
395 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
396 return (0);
397 }
398 ssl->sid_ctx_length = sid_ctx_len;
399 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
400
401 return (1);
402 }
403
404 int
405 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
406 {
407 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
408 ctx->internal->generate_session_id = cb;
409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
410 return (1);
411 }
412
413 int
414 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
415 {
416 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
417 ssl->internal->generate_session_id = cb;
418 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
419 return (1);
420 }
421
422 int
423 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
424 unsigned int id_len)
425 {
426 /*
427 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp
428 * shows how we can "construct" a session to give us the desired
429 * check - ie. to find if there's a session in the hash table
430 * that would conflict with any new session built out of this
431 * id/id_len and the ssl_version in use by this SSL.
432 */
433 SSL_SESSION r, *p;
434
435 if (id_len > sizeof r.session_id)
436 return (0);
437
438 r.ssl_version = ssl->version;
439 r.session_id_length = id_len;
440 memcpy(r.session_id, id, id_len);
441
442 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
443 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r);
444 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
445 return (p != NULL);
446 }
447
448 int
449 SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
450 {
451 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
452 }
453
454 int
455 SSL_set_purpose(SSL *s, int purpose)
456 {
457 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
458 }
459
460 int
461 SSL_CTX_set_trust(SSL_CTX *s, int trust)
462 {
463 return (X509_VERIFY_PARAM_set_trust(s->param, trust));
464 }
465
466 int
467 SSL_set_trust(SSL *s, int trust)
468 {
469 return (X509_VERIFY_PARAM_set_trust(s->param, trust));
470 }
471
472 int
473 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
474 {
475 return (X509_VERIFY_PARAM_set1(ctx->param, vpm));
476 }
477
478 int
479 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
480 {
481 return (X509_VERIFY_PARAM_set1(ssl->param, vpm));
482 }
483
484 void
485 SSL_free(SSL *s)
486 {
487 int i;
488
489 if (s == NULL)
490 return;
491
492 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
493 if (i > 0)
494 return;
495
496 X509_VERIFY_PARAM_free(s->param);
497
498 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data);
499
500 if (s->bbio != NULL) {
501 /* If the buffering BIO is in place, pop it off */
502 if (s->bbio == s->wbio) {
503 s->wbio = BIO_pop(s->wbio);
504 }
505 BIO_free(s->bbio);
506 s->bbio = NULL;
507 }
508
509 if (s->rbio != s->wbio)
510 BIO_free_all(s->rbio);
511 BIO_free_all(s->wbio);
512
513 BUF_MEM_free(s->internal->init_buf);
514
515 /* add extra stuff */
516 sk_SSL_CIPHER_free(s->cipher_list);
517 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id);
518
519 /* Make the next call work :-) */
520 if (s->session != NULL) {
521 ssl_clear_bad_session(s);
522 SSL_SESSION_free(s->session);
523 }
524
525 ssl_clear_cipher_ctx(s);
526 ssl_clear_hash_ctx(&s->read_hash);
527 ssl_clear_hash_ctx(&s->internal->write_hash);
528
529 ssl_cert_free(s->cert);
530
531 free(s->tlsext_hostname);
532 SSL_CTX_free(s->initial_ctx);
533
534 free(s->internal->tlsext_ecpointformatlist);
535 free(s->internal->tlsext_supportedgroups);
536
537 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts,
538 X509_EXTENSION_free);
539 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free);
540 free(s->internal->tlsext_ocsp_resp);
541
542 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free);
543
544 if (s->method != NULL)
545 s->method->internal->ssl_free(s);
546
547 SSL_CTX_free(s->ctx);
548
549 free(s->internal->alpn_client_proto_list);
550
551 #ifndef OPENSSL_NO_SRTP
552 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles);
553 #endif
554
555 free(s->internal);
556 free(s);
557 }
558
559 void
560 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
561 {
562 /* If the output buffering BIO is still in place, remove it */
563 if (s->bbio != NULL) {
564 if (s->wbio == s->bbio) {
565 s->wbio = s->wbio->next_bio;
566 s->bbio->next_bio = NULL;
567 }
568 }
569
570 if (s->rbio != rbio && s->rbio != s->wbio)
571 BIO_free_all(s->rbio);
572 if (s->wbio != wbio)
573 BIO_free_all(s->wbio);
574 s->rbio = rbio;
575 s->wbio = wbio;
576 }
577
578 BIO *
579 SSL_get_rbio(const SSL *s)
580 {
581 return (s->rbio);
582 }
583
584 BIO *
585 SSL_get_wbio(const SSL *s)
586 {
587 return (s->wbio);
588 }
589
590 int
591 SSL_get_fd(const SSL *s)
592 {
593 return (SSL_get_rfd(s));
594 }
595
596 int
597 SSL_get_rfd(const SSL *s)
598 {
599 int ret = -1;
600 BIO *b, *r;
601
602 b = SSL_get_rbio(s);
603 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
604 if (r != NULL)
605 BIO_get_fd(r, &ret);
606 return (ret);
607 }
608
609 int
610 SSL_get_wfd(const SSL *s)
611 {
612 int ret = -1;
613 BIO *b, *r;
614
615 b = SSL_get_wbio(s);
616 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
617 if (r != NULL)
618 BIO_get_fd(r, &ret);
619 return (ret);
620 }
621
622 int
623 SSL_set_fd(SSL *s, int fd)
624 {
625 int ret = 0;
626 BIO *bio = NULL;
627
628 bio = BIO_new(BIO_s_socket());
629
630 if (bio == NULL) {
631 SSLerror(s, ERR_R_BUF_LIB);
632 goto err;
633 }
634 BIO_set_fd(bio, fd, BIO_NOCLOSE);
635 SSL_set_bio(s, bio, bio);
636 ret = 1;
637 err:
638 return (ret);
639 }
640
641 int
642 SSL_set_wfd(SSL *s, int fd)
643 {
644 int ret = 0;
645 BIO *bio = NULL;
646
647 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
648 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
649 bio = BIO_new(BIO_s_socket());
650
651 if (bio == NULL) {
652 SSLerror(s, ERR_R_BUF_LIB);
653 goto err;
654 }
655 BIO_set_fd(bio, fd, BIO_NOCLOSE);
656 SSL_set_bio(s, SSL_get_rbio(s), bio);
657 } else
658 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
659 ret = 1;
660 err:
661 return (ret);
662 }
663
664 int
665 SSL_set_rfd(SSL *s, int fd)
666 {
667 int ret = 0;
668 BIO *bio = NULL;
669
670 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
671 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
672 bio = BIO_new(BIO_s_socket());
673
674 if (bio == NULL) {
675 SSLerror(s, ERR_R_BUF_LIB);
676 goto err;
677 }
678 BIO_set_fd(bio, fd, BIO_NOCLOSE);
679 SSL_set_bio(s, bio, SSL_get_wbio(s));
680 } else
681 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
682 ret = 1;
683 err:
684 return (ret);
685 }
686
687
688 /* return length of latest Finished message we sent, copy to 'buf' */
689 size_t
690 SSL_get_finished(const SSL *s, void *buf, size_t count)
691 {
692 size_t ret = 0;
693
694 if (s->s3 != NULL) {
695 ret = S3I(s)->tmp.finish_md_len;
696 if (count > ret)
697 count = ret;
698 memcpy(buf, S3I(s)->tmp.finish_md, count);
699 }
700 return (ret);
701 }
702
703 /* return length of latest Finished message we expected, copy to 'buf' */
704 size_t
705 SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
706 {
707 size_t ret = 0;
708
709 if (s->s3 != NULL) {
710 ret = S3I(s)->tmp.peer_finish_md_len;
711 if (count > ret)
712 count = ret;
713 memcpy(buf, S3I(s)->tmp.peer_finish_md, count);
714 }
715 return (ret);
716 }
717
718
719 int
720 SSL_get_verify_mode(const SSL *s)
721 {
722 return (s->verify_mode);
723 }
724
725 int
726 SSL_get_verify_depth(const SSL *s)
727 {
728 return (X509_VERIFY_PARAM_get_depth(s->param));
729 }
730
731 int
732 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *)
733 {
734 return (s->internal->verify_callback);
735 }
736
737 int
738 SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
739 {
740 return (ctx->verify_mode);
741 }
742
743 int
744 SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
745 {
746 return (X509_VERIFY_PARAM_get_depth(ctx->param));
747 }
748
749 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *)
750 {
751 return (ctx->internal->default_verify_callback);
752 }
753
754 void
755 SSL_set_verify(SSL *s, int mode,
756 int (*callback)(int ok, X509_STORE_CTX *ctx))
757 {
758 s->verify_mode = mode;
759 if (callback != NULL)
760 s->internal->verify_callback = callback;
761 }
762
763 void
764 SSL_set_verify_depth(SSL *s, int depth)
765 {
766 X509_VERIFY_PARAM_set_depth(s->param, depth);
767 }
768
769 void
770 SSL_set_read_ahead(SSL *s, int yes)
771 {
772 s->internal->read_ahead = yes;
773 }
774
775 int
776 SSL_get_read_ahead(const SSL *s)
777 {
778 return (s->internal->read_ahead);
779 }
780
781 int
782 SSL_pending(const SSL *s)
783 {
784 /*
785 * SSL_pending cannot work properly if read-ahead is enabled
786 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
787 * and it is impossible to fix since SSL_pending cannot report
788 * errors that may be observed while scanning the new data.
789 * (Note that SSL_pending() is often used as a boolean value,
790 * so we'd better not return -1.)
791 */
792 return (s->method->internal->ssl_pending(s));
793 }
794
795 X509 *
796 SSL_get_peer_certificate(const SSL *s)
797 {
798 X509 *r;
799
800 if ((s == NULL) || (s->session == NULL))
801 r = NULL;
802 else
803 r = s->session->peer;
804
805 if (r == NULL)
806 return (r);
807
808 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
809
810 return (r);
811 }
812
813 STACK_OF(X509) *
814 SSL_get_peer_cert_chain(const SSL *s)
815 {
816 STACK_OF(X509) *r;
817
818 if ((s == NULL) || (s->session == NULL) ||
819 (SSI(s)->sess_cert == NULL))
820 r = NULL;
821 else
822 r = SSI(s)->sess_cert->cert_chain;
823
824 /*
825 * If we are a client, cert_chain includes the peer's own
826 * certificate;
827 * if we are a server, it does not.
828 */
829 return (r);
830 }
831
832 /*
833 * Now in theory, since the calling process own 't' it should be safe to
834 * modify. We need to be able to read f without being hassled
835 */
836 void
837 SSL_copy_session_id(SSL *t, const SSL *f)
838 {
839 CERT *tmp;
840
841 /* Do we need to to SSL locking? */
842 SSL_set_session(t, SSL_get_session(f));
843
844 /*
845 * What if we are setup as SSLv2 but want to talk SSLv3 or
846 * vice-versa.
847 */
848 if (t->method != f->method) {
849 t->method->internal->ssl_free(t); /* cleanup current */
850 t->method = f->method; /* change method */
851 t->method->internal->ssl_new(t); /* setup new */
852 }
853
854 tmp = t->cert;
855 if (f->cert != NULL) {
856 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
857 t->cert = f->cert;
858 } else
859 t->cert = NULL;
860 ssl_cert_free(tmp);
861 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
862 }
863
864 /* Fix this so it checks all the valid key/cert options */
865 int
866 SSL_CTX_check_private_key(const SSL_CTX *ctx)
867 {
868 if ((ctx == NULL) || (ctx->internal->cert == NULL) ||
869 (ctx->internal->cert->key->x509 == NULL)) {
870 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED);
871 return (0);
872 }
873 if (ctx->internal->cert->key->privatekey == NULL) {
874 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED);
875 return (0);
876 }
877 return (X509_check_private_key(ctx->internal->cert->key->x509,
878 ctx->internal->cert->key->privatekey));
879 }
880
881 /* Fix this function so that it takes an optional type parameter */
882 int
883 SSL_check_private_key(const SSL *ssl)
884 {
885 if (ssl == NULL) {
886 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
887 return (0);
888 }
889 if (ssl->cert == NULL) {
890 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
891 return (0);
892 }
893 if (ssl->cert->key->x509 == NULL) {
894 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
895 return (0);
896 }
897 if (ssl->cert->key->privatekey == NULL) {
898 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
899 return (0);
900 }
901 return (X509_check_private_key(ssl->cert->key->x509,
902 ssl->cert->key->privatekey));
903 }
904
905 int
906 SSL_accept(SSL *s)
907 {
908 if (s->internal->handshake_func == NULL)
909 SSL_set_accept_state(s); /* Not properly initialized yet */
910
911 return (s->method->internal->ssl_accept(s));
912 }
913
914 int
915 SSL_connect(SSL *s)
916 {
917 if (s->internal->handshake_func == NULL)
918 SSL_set_connect_state(s); /* Not properly initialized yet */
919
920 return (s->method->internal->ssl_connect(s));
921 }
922
923 long
924 SSL_get_default_timeout(const SSL *s)
925 {
926 return (s->method->internal->get_timeout());
927 }
928
929 int
930 SSL_read(SSL *s, void *buf, int num)
931 {
932 if (s->internal->handshake_func == NULL) {
933 SSLerror(s, SSL_R_UNINITIALIZED);
934 return (-1);
935 }
936
937 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) {
938 s->internal->rwstate = SSL_NOTHING;
939 return (0);
940 }
941 return (s->method->internal->ssl_read(s, buf, num));
942 }
943
944 int
945 SSL_peek(SSL *s, void *buf, int num)
946 {
947 if (s->internal->handshake_func == NULL) {
948 SSLerror(s, SSL_R_UNINITIALIZED);
949 return (-1);
950 }
951
952 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) {
953 return (0);
954 }
955 return (s->method->internal->ssl_peek(s, buf, num));
956 }
957
958 int
959 SSL_write(SSL *s, const void *buf, int num)
960 {
961 if (s->internal->handshake_func == NULL) {
962 SSLerror(s, SSL_R_UNINITIALIZED);
963 return (-1);
964 }
965
966 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) {
967 s->internal->rwstate = SSL_NOTHING;
968 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN);
969 return (-1);
970 }
971 return (s->method->internal->ssl_write(s, buf, num));
972 }
973
974 int
975 SSL_shutdown(SSL *s)
976 {
977 /*
978 * Note that this function behaves differently from what one might
979 * expect. Return values are 0 for no success (yet),
980 * 1 for success; but calling it once is usually not enough,
981 * even if blocking I/O is used (see ssl3_shutdown).
982 */
983
984 if (s->internal->handshake_func == NULL) {
985 SSLerror(s, SSL_R_UNINITIALIZED);
986 return (-1);
987 }
988
989 if ((s != NULL) && !SSL_in_init(s))
990 return (s->method->internal->ssl_shutdown(s));
991 else
992 return (1);
993 }
994
995 int
996 SSL_renegotiate(SSL *s)
997 {
998 if (s->internal->renegotiate == 0)
999 s->internal->renegotiate = 1;
1000
1001 s->internal->new_session = 1;
1002
1003 return (s->method->internal->ssl_renegotiate(s));
1004 }
1005
1006 int
1007 SSL_renegotiate_abbreviated(SSL *s)
1008 {
1009 if (s->internal->renegotiate == 0)
1010 s->internal->renegotiate = 1;
1011
1012 s->internal->new_session = 0;
1013
1014 return (s->method->internal->ssl_renegotiate(s));
1015 }
1016
1017 int
1018 SSL_renegotiate_pending(SSL *s)
1019 {
1020 /*
1021 * Becomes true when negotiation is requested;
1022 * false again once a handshake has finished.
1023 */
1024 return (s->internal->renegotiate != 0);
1025 }
1026
1027 long
1028 SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1029 {
1030 long l;
1031
1032 switch (cmd) {
1033 case SSL_CTRL_GET_READ_AHEAD:
1034 return (s->internal->read_ahead);
1035 case SSL_CTRL_SET_READ_AHEAD:
1036 l = s->internal->read_ahead;
1037 s->internal->read_ahead = larg;
1038 return (l);
1039
1040 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1041 s->internal->msg_callback_arg = parg;
1042 return (1);
1043
1044 case SSL_CTRL_OPTIONS:
1045 return (s->internal->options|=larg);
1046 case SSL_CTRL_CLEAR_OPTIONS:
1047 return (s->internal->options&=~larg);
1048 case SSL_CTRL_MODE:
1049 return (s->internal->mode|=larg);
1050 case SSL_CTRL_CLEAR_MODE:
1051 return (s->internal->mode &=~larg);
1052 case SSL_CTRL_GET_MAX_CERT_LIST:
1053 return (s->internal->max_cert_list);
1054 case SSL_CTRL_SET_MAX_CERT_LIST:
1055 l = s->internal->max_cert_list;
1056 s->internal->max_cert_list = larg;
1057 return (l);
1058 case SSL_CTRL_SET_MTU:
1059 #ifndef OPENSSL_NO_DTLS1
1060 if (larg < (long)dtls1_min_mtu())
1061 return (0);
1062 #endif
1063 if (SSL_IS_DTLS(s)) {
1064 D1I(s)->mtu = larg;
1065 return (larg);
1066 }
1067 return (0);
1068 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1069 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1070 return (0);
1071 s->max_send_fragment = larg;
1072 return (1);
1073 case SSL_CTRL_GET_RI_SUPPORT:
1074 if (s->s3)
1075 return (S3I(s)->send_connection_binding);
1076 else return (0);
1077 default:
1078 if (SSL_IS_DTLS(s))
1079 return dtls1_ctrl(s, cmd, larg, parg);
1080 return ssl3_ctrl(s, cmd, larg, parg);
1081 }
1082 }
1083
1084 long
1085 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1086 {
1087 switch (cmd) {
1088 case SSL_CTRL_SET_MSG_CALLBACK:
1089 s->internal->msg_callback = (void (*)(int write_p, int version,
1090 int content_type, const void *buf, size_t len,
1091 SSL *ssl, void *arg))(fp);
1092 return (1);
1093
1094 default:
1095 return (ssl3_callback_ctrl(s, cmd, fp));
1096 }
1097 }
1098
1099 struct lhash_st_SSL_SESSION *
1100 SSL_CTX_sessions(SSL_CTX *ctx)
1101 {
1102 return (ctx->internal->sessions);
1103 }
1104
1105 long
1106 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1107 {
1108 long l;
1109
1110 switch (cmd) {
1111 case SSL_CTRL_GET_READ_AHEAD:
1112 return (ctx->internal->read_ahead);
1113 case SSL_CTRL_SET_READ_AHEAD:
1114 l = ctx->internal->read_ahead;
1115 ctx->internal->read_ahead = larg;
1116 return (l);
1117
1118 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1119 ctx->internal->msg_callback_arg = parg;
1120 return (1);
1121
1122 case SSL_CTRL_GET_MAX_CERT_LIST:
1123 return (ctx->internal->max_cert_list);
1124 case SSL_CTRL_SET_MAX_CERT_LIST:
1125 l = ctx->internal->max_cert_list;
1126 ctx->internal->max_cert_list = larg;
1127 return (l);
1128
1129 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1130 l = ctx->internal->session_cache_size;
1131 ctx->internal->session_cache_size = larg;
1132 return (l);
1133 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1134 return (ctx->internal->session_cache_size);
1135 case SSL_CTRL_SET_SESS_CACHE_MODE:
1136 l = ctx->internal->session_cache_mode;
1137 ctx->internal->session_cache_mode = larg;
1138 return (l);
1139 case SSL_CTRL_GET_SESS_CACHE_MODE:
1140 return (ctx->internal->session_cache_mode);
1141
1142 case SSL_CTRL_SESS_NUMBER:
1143 return (lh_SSL_SESSION_num_items(ctx->internal->sessions));
1144 case SSL_CTRL_SESS_CONNECT:
1145 return (ctx->internal->stats.sess_connect);
1146 case SSL_CTRL_SESS_CONNECT_GOOD:
1147 return (ctx->internal->stats.sess_connect_good);
1148 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1149 return (ctx->internal->stats.sess_connect_renegotiate);
1150 case SSL_CTRL_SESS_ACCEPT:
1151 return (ctx->internal->stats.sess_accept);
1152 case SSL_CTRL_SESS_ACCEPT_GOOD:
1153 return (ctx->internal->stats.sess_accept_good);
1154 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1155 return (ctx->internal->stats.sess_accept_renegotiate);
1156 case SSL_CTRL_SESS_HIT:
1157 return (ctx->internal->stats.sess_hit);
1158 case SSL_CTRL_SESS_CB_HIT:
1159 return (ctx->internal->stats.sess_cb_hit);
1160 case SSL_CTRL_SESS_MISSES:
1161 return (ctx->internal->stats.sess_miss);
1162 case SSL_CTRL_SESS_TIMEOUTS:
1163 return (ctx->internal->stats.sess_timeout);
1164 case SSL_CTRL_SESS_CACHE_FULL:
1165 return (ctx->internal->stats.sess_cache_full);
1166 case SSL_CTRL_OPTIONS:
1167 return (ctx->internal->options|=larg);
1168 case SSL_CTRL_CLEAR_OPTIONS:
1169 return (ctx->internal->options&=~larg);
1170 case SSL_CTRL_MODE:
1171 return (ctx->internal->mode|=larg);
1172 case SSL_CTRL_CLEAR_MODE:
1173 return (ctx->internal->mode&=~larg);
1174 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1175 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1176 return (0);
1177 ctx->internal->max_send_fragment = larg;
1178 return (1);
1179 default:
1180 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg));
1181 }
1182 }
1183
1184 long
1185 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1186 {
1187 switch (cmd) {
1188 case SSL_CTRL_SET_MSG_CALLBACK:
1189 ctx->internal->msg_callback = (void (*)(int write_p, int version,
1190 int content_type, const void *buf, size_t len, SSL *ssl,
1191 void *arg))(fp);
1192 return (1);
1193
1194 default:
1195 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp));
1196 }
1197 }
1198
1199 int
1200 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1201 {
1202 long l;
1203
1204 l = a->id - b->id;
1205 if (l == 0L)
1206 return (0);
1207 else
1208 return ((l > 0) ? 1:-1);
1209 }
1210
1211 int
1212 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1213 const SSL_CIPHER * const *bp)
1214 {
1215 long l;
1216
1217 l = (*ap)->id - (*bp)->id;
1218 if (l == 0L)
1219 return (0);
1220 else
1221 return ((l > 0) ? 1:-1);
1222 }
1223
1224 /*
1225 * Return a STACK of the ciphers available for the SSL and in order of
1226 * preference.
1227 */
1228 STACK_OF(SSL_CIPHER) *
1229 SSL_get_ciphers(const SSL *s)
1230 {
1231 if (s != NULL) {
1232 if (s->cipher_list != NULL) {
1233 return (s->cipher_list);
1234 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1235 return (s->ctx->cipher_list);
1236 }
1237 }
1238 return (NULL);
1239 }
1240
1241 /*
1242 * Return a STACK of the ciphers available for the SSL and in order of
1243 * algorithm id.
1244 */
1245 STACK_OF(SSL_CIPHER) *
1246 ssl_get_ciphers_by_id(SSL *s)
1247 {
1248 if (s != NULL) {
1249 if (s->internal->cipher_list_by_id != NULL) {
1250 return (s->internal->cipher_list_by_id);
1251 } else if ((s->ctx != NULL) &&
1252 (s->ctx->internal->cipher_list_by_id != NULL)) {
1253 return (s->ctx->internal->cipher_list_by_id);
1254 }
1255 }
1256 return (NULL);
1257 }
1258
1259 /* See if we have any ECC cipher suites. */
1260 int
1261 ssl_has_ecc_ciphers(SSL *s)
1262 {
1263 STACK_OF(SSL_CIPHER) *ciphers;
1264 unsigned long alg_k, alg_a;
1265 SSL_CIPHER *cipher;
1266 int i;
1267
1268 if (s->version == DTLS1_VERSION)
1269 return 0;
1270 if ((ciphers = SSL_get_ciphers(s)) == NULL)
1271 return 0;
1272
1273 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1274 cipher = sk_SSL_CIPHER_value(ciphers, i);
1275
1276 alg_k = cipher->algorithm_mkey;
1277 alg_a = cipher->algorithm_auth;
1278
1279 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA))
1280 return 1;
1281 }
1282
1283 return 0;
1284 }
1285
1286 /* The old interface to get the same thing as SSL_get_ciphers(). */
1287 const char *
1288 SSL_get_cipher_list(const SSL *s, int n)
1289 {
1290 SSL_CIPHER *c;
1291 STACK_OF(SSL_CIPHER) *sk;
1292
1293 if (s == NULL)
1294 return (NULL);
1295 sk = SSL_get_ciphers(s);
1296 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1297 return (NULL);
1298 c = sk_SSL_CIPHER_value(sk, n);
1299 if (c == NULL)
1300 return (NULL);
1301 return (c->name);
1302 }
1303
1304 /* Specify the ciphers to be used by default by the SSL_CTX. */
1305 int
1306 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1307 {
1308 STACK_OF(SSL_CIPHER) *sk;
1309
1310 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1311 &ctx->internal->cipher_list_by_id, str);
1312 /*
1313 * ssl_create_cipher_list may return an empty stack if it
1314 * was unable to find a cipher matching the given rule string
1315 * (for example if the rule string specifies a cipher which
1316 * has been disabled). This is not an error as far as
1317 * ssl_create_cipher_list is concerned, and hence
1318 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been
1319 * updated.
1320 */
1321 if (sk == NULL)
1322 return (0);
1323 else if (sk_SSL_CIPHER_num(sk) == 0) {
1324 SSLerrorx(SSL_R_NO_CIPHER_MATCH);
1325 return (0);
1326 }
1327 return (1);
1328 }
1329
1330 /* Specify the ciphers to be used by the SSL. */
1331 int
1332 SSL_set_cipher_list(SSL *s, const char *str)
1333 {
1334 STACK_OF(SSL_CIPHER) *sk;
1335
1336 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1337 &s->internal->cipher_list_by_id, str);
1338 /* see comment in SSL_CTX_set_cipher_list */
1339 if (sk == NULL)
1340 return (0);
1341 else if (sk_SSL_CIPHER_num(sk) == 0) {
1342 SSLerror(s, SSL_R_NO_CIPHER_MATCH);
1343 return (0);
1344 }
1345 return (1);
1346 }
1347
1348 /* works well for SSLv2, not so good for SSLv3 */
1349 char *
1350 SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1351 {
1352 char *end;
1353 STACK_OF(SSL_CIPHER) *sk;
1354 SSL_CIPHER *c;
1355 size_t curlen = 0;
1356 int i;
1357
1358 if (s->session == NULL || s->session->ciphers == NULL || len < 2)
1359 return (NULL);
1360
1361 sk = s->session->ciphers;
1362 if (sk_SSL_CIPHER_num(sk) == 0)
1363 return (NULL);
1364
1365 buf[0] = '\0';
1366 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1367 c = sk_SSL_CIPHER_value(sk, i);
1368 end = buf + curlen;
1369 if (strlcat(buf, c->name, len) >= len ||
1370 (curlen = strlcat(buf, ":", len)) >= len) {
1371 /* remove truncated cipher from list */
1372 *end = '\0';
1373 break;
1374 }
1375 }
1376 /* remove trailing colon */
1377 if ((end = strrchr(buf, ':')) != NULL)
1378 *end = '\0';
1379 return (buf);
1380 }
1381
1382 int
1383 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p,
1384 size_t maxlen, size_t *outlen)
1385 {
1386 SSL_CIPHER *cipher;
1387 int ciphers = 0;
1388 CBB cbb;
1389 int i;
1390
1391 *outlen = 0;
1392
1393 if (sk == NULL)
1394 return (0);
1395
1396 if (!CBB_init_fixed(&cbb, p, maxlen))
1397 goto err;
1398
1399 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1400 cipher = sk_SSL_CIPHER_value(sk, i);
1401
1402 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1403 if ((cipher->algorithm_ssl & SSL_TLSV1_2) &&
1404 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1405 continue;
1406
1407 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher)))
1408 goto err;
1409
1410 ciphers++;
1411 }
1412
1413 /* Add SCSV if there are other ciphers and we're not renegotiating. */
1414 if (ciphers > 0 && !s->internal->renegotiate) {
1415 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK))
1416 goto err;
1417 }
1418
1419 if (!CBB_finish(&cbb, NULL, outlen))
1420 goto err;
1421
1422 return 1;
1423
1424 err:
1425 CBB_cleanup(&cbb);
1426
1427 return 0;
1428 }
1429
1430 STACK_OF(SSL_CIPHER) *
1431 ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num)
1432 {
1433 CBS cbs;
1434 const SSL_CIPHER *c;
1435 STACK_OF(SSL_CIPHER) *sk = NULL;
1436 unsigned long cipher_id;
1437 uint16_t cipher_value, max_version;
1438
1439 if (s->s3)
1440 S3I(s)->send_connection_binding = 0;
1441
1442 /*
1443 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2].
1444 */
1445 if (num < 2 || num > 0x10000 - 2) {
1446 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1447 return (NULL);
1448 }
1449
1450 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) {
1451 SSLerror(s, ERR_R_MALLOC_FAILURE);
1452 goto err;
1453 }
1454
1455 CBS_init(&cbs, p, num);
1456 while (CBS_len(&cbs) > 0) {
1457 if (!CBS_get_u16(&cbs, &cipher_value)) {
1458 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1459 goto err;
1460 }
1461
1462 cipher_id = SSL3_CK_ID | cipher_value;
1463
1464 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) {
1465 /*
1466 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if
1467 * renegotiating.
1468 */
1469 if (s->internal->renegotiate) {
1470 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1471 ssl3_send_alert(s, SSL3_AL_FATAL,
1472 SSL_AD_HANDSHAKE_FAILURE);
1473
1474 goto err;
1475 }
1476 S3I(s)->send_connection_binding = 1;
1477 continue;
1478 }
1479
1480 if (cipher_id == SSL3_CK_FALLBACK_SCSV) {
1481 /*
1482 * TLS_FALLBACK_SCSV indicates that the client
1483 * previously tried a higher protocol version.
1484 * Fail if the current version is an unexpected
1485 * downgrade.
1486 */
1487 max_version = ssl_max_server_version(s);
1488 if (max_version == 0 || s->version < max_version) {
1489 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK);
1490 if (s->s3 != NULL)
1491 ssl3_send_alert(s, SSL3_AL_FATAL,
1492 SSL_AD_INAPPROPRIATE_FALLBACK);
1493 goto err;
1494 }
1495 continue;
1496 }
1497
1498 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) {
1499 if (!sk_SSL_CIPHER_push(sk, c)) {
1500 SSLerror(s, ERR_R_MALLOC_FAILURE);
1501 goto err;
1502 }
1503 }
1504 }
1505
1506 return (sk);
1507
1508 err:
1509 sk_SSL_CIPHER_free(sk);
1510
1511 return (NULL);
1512 }
1513
1514
1515 /*
1516 * Return a servername extension value if provided in Client Hello, or NULL.
1517 * So far, only host_name types are defined (RFC 3546).
1518 */
1519 const char *
1520 SSL_get_servername(const SSL *s, const int type)
1521 {
1522 if (type != TLSEXT_NAMETYPE_host_name)
1523 return (NULL);
1524
1525 return (s->session && !s->tlsext_hostname ?
1526 s->session->tlsext_hostname :
1527 s->tlsext_hostname);
1528 }
1529
1530 int
1531 SSL_get_servername_type(const SSL *s)
1532 {
1533 if (s->session &&
1534 (!s->tlsext_hostname ?
1535 s->session->tlsext_hostname : s->tlsext_hostname))
1536 return (TLSEXT_NAMETYPE_host_name);
1537 return (-1);
1538 }
1539
1540 /*
1541 * SSL_select_next_proto implements standard protocol selection. It is
1542 * expected that this function is called from the callback set by
1543 * SSL_CTX_set_alpn_select_cb.
1544 *
1545 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1546 * strings. The length byte itself is not included in the length. A byte
1547 * string of length 0 is invalid. No byte string may be truncated.
1548 *
1549 * It returns either:
1550 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1551 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1552 */
1553 int
1554 SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1555 const unsigned char *server, unsigned int server_len,
1556 const unsigned char *client, unsigned int client_len)
1557 {
1558 unsigned int i, j;
1559 const unsigned char *result;
1560 int status = OPENSSL_NPN_UNSUPPORTED;
1561
1562 /*
1563 * For each protocol in server preference order,
1564 * see if we support it.
1565 */
1566 for (i = 0; i < server_len; ) {
1567 for (j = 0; j < client_len; ) {
1568 if (server[i] == client[j] &&
1569 memcmp(&server[i + 1],
1570 &client[j + 1], server[i]) == 0) {
1571 /* We found a match */
1572 result = &server[i];
1573 status = OPENSSL_NPN_NEGOTIATED;
1574 goto found;
1575 }
1576 j += client[j];
1577 j++;
1578 }
1579 i += server[i];
1580 i++;
1581 }
1582
1583 /* There's no overlap between our protocols and the server's list. */
1584 result = client;
1585 status = OPENSSL_NPN_NO_OVERLAP;
1586
1587 found:
1588 *out = (unsigned char *) result + 1;
1589 *outlen = result[0];
1590 return (status);
1591 }
1592
1593 /* SSL_get0_next_proto_negotiated is deprecated. */
1594 void
1595 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1596 unsigned *len)
1597 {
1598 *data = NULL;
1599 *len = 0;
1600 }
1601
1602 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */
1603 void
1604 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl,
1605 const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
1606 {
1607 }
1608
1609 /* SSL_CTX_set_next_proto_select_cb is deprecated. */
1610 void
1611 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s,
1612 unsigned char **out, unsigned char *outlen, const unsigned char *in,
1613 unsigned int inlen, void *arg), void *arg)
1614 {
1615 }
1616
1617 /*
1618 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified
1619 * protocols, which must be in wire-format (i.e. a series of non-empty,
1620 * 8-bit length-prefixed strings). Returns 0 on success.
1621 */
1622 int
1623 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1624 unsigned int protos_len)
1625 {
1626 int failed = 1;
1627
1628 if (protos == NULL || protos_len == 0)
1629 goto err;
1630
1631 free(ctx->internal->alpn_client_proto_list);
1632 ctx->internal->alpn_client_proto_list = NULL;
1633 ctx->internal->alpn_client_proto_list_len = 0;
1634
1635 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len))
1636 == NULL)
1637 goto err;
1638 ctx->internal->alpn_client_proto_list_len = protos_len;
1639
1640 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len);
1641
1642 failed = 0;
1643
1644 err:
1645 /* NOTE: Return values are the reverse of what you expect. */
1646 return (failed);
1647 }
1648
1649 /*
1650 * SSL_set_alpn_protos sets the ALPN protocol list to the specified
1651 * protocols, which must be in wire-format (i.e. a series of non-empty,
1652 * 8-bit length-prefixed strings). Returns 0 on success.
1653 */
1654 int
1655 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1656 unsigned int protos_len)
1657 {
1658 int failed = 1;
1659
1660 if (protos == NULL || protos_len == 0)
1661 goto err;
1662
1663 free(ssl->internal->alpn_client_proto_list);
1664 ssl->internal->alpn_client_proto_list = NULL;
1665 ssl->internal->alpn_client_proto_list_len = 0;
1666
1667 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len))
1668 == NULL)
1669 goto err;
1670 ssl->internal->alpn_client_proto_list_len = protos_len;
1671
1672 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len);
1673
1674 failed = 0;
1675
1676 err:
1677 /* NOTE: Return values are the reverse of what you expect. */
1678 return (failed);
1679 }
1680
1681 /*
1682 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during
1683 * ClientHello processing in order to select an ALPN protocol from the
1684 * client's list of offered protocols.
1685 */
1686 void
1687 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
1688 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen,
1689 const unsigned char *in, unsigned int inlen, void *arg), void *arg)
1690 {
1691 ctx->internal->alpn_select_cb = cb;
1692 ctx->internal->alpn_select_cb_arg = arg;
1693 }
1694
1695 /*
1696 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return
1697 * it sets data to point to len bytes of protocol name (not including the
1698 * leading length-prefix byte). If the server didn't respond with* a negotiated
1699 * protocol then len will be zero.
1700 */
1701 void
1702 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1703 unsigned *len)
1704 {
1705 *data = NULL;
1706 *len = 0;
1707
1708 if (ssl->s3 != NULL) {
1709 *data = ssl->s3->internal->alpn_selected;
1710 *len = ssl->s3->internal->alpn_selected_len;
1711 }
1712 }
1713
1714 int
1715 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1716 const char *label, size_t llen, const unsigned char *p, size_t plen,
1717 int use_context)
1718 {
1719 return (tls1_export_keying_material(s, out, olen,
1720 label, llen, p, plen, use_context));
1721 }
1722
1723 static unsigned long
1724 ssl_session_hash(const SSL_SESSION *a)
1725 {
1726 unsigned long l;
1727
1728 l = (unsigned long)
1729 ((unsigned int) a->session_id[0] )|
1730 ((unsigned int) a->session_id[1]<< 8L)|
1731 ((unsigned long)a->session_id[2]<<16L)|
1732 ((unsigned long)a->session_id[3]<<24L);
1733 return (l);
1734 }
1735
1736 /*
1737 * NB: If this function (or indeed the hash function which uses a sort of
1738 * coarser function than this one) is changed, ensure
1739 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1740 * able to construct an SSL_SESSION that will collide with any existing session
1741 * with a matching session ID.
1742 */
1743 static int
1744 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1745 {
1746 if (a->ssl_version != b->ssl_version)
1747 return (1);
1748 if (a->session_id_length != b->session_id_length)
1749 return (1);
1750 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0)
1751 return (1);
1752 return (0);
1753 }
1754
1755 /*
1756 * These wrapper functions should remain rather than redeclaring
1757 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1758 * variable. The reason is that the functions aren't static, they're exposed via
1759 * ssl.h.
1760 */
1761 static unsigned long
1762 ssl_session_LHASH_HASH(const void *arg)
1763 {
1764 const SSL_SESSION *a = arg;
1765
1766 return ssl_session_hash(a);
1767 }
1768
1769 static int
1770 ssl_session_LHASH_COMP(const void *arg1, const void *arg2)
1771 {
1772 const SSL_SESSION *a = arg1;
1773 const SSL_SESSION *b = arg2;
1774
1775 return ssl_session_cmp(a, b);
1776 }
1777
1778 SSL_CTX *
1779 SSL_CTX_new(const SSL_METHOD *meth)
1780 {
1781 SSL_CTX *ret;
1782
1783 if (meth == NULL) {
1784 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED);
1785 return (NULL);
1786 }
1787
1788 if ((ret = calloc(1, sizeof(*ret))) == NULL) {
1789 SSLerrorx(ERR_R_MALLOC_FAILURE);
1790 return (NULL);
1791 }
1792 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) {
1793 free(ret);
1794 SSLerrorx(ERR_R_MALLOC_FAILURE);
1795 return (NULL);
1796 }
1797
1798 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1799 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1800 goto err;
1801 }
1802
1803 ret->method = meth;
1804 ret->internal->min_version = meth->internal->min_version;
1805 ret->internal->max_version = meth->internal->max_version;
1806
1807 ret->cert_store = NULL;
1808 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER;
1809 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1810 ret->internal->session_cache_head = NULL;
1811 ret->internal->session_cache_tail = NULL;
1812
1813 /* We take the system default */
1814 ret->session_timeout = meth->internal->get_timeout();
1815
1816 ret->internal->new_session_cb = 0;
1817 ret->internal->remove_session_cb = 0;
1818 ret->internal->get_session_cb = 0;
1819 ret->internal->generate_session_id = 0;
1820
1821 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats));
1822
1823 ret->references = 1;
1824 ret->internal->quiet_shutdown = 0;
1825
1826 ret->internal->info_callback = NULL;
1827
1828 ret->internal->app_verify_callback = 0;
1829 ret->internal->app_verify_arg = NULL;
1830
1831 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1832 ret->internal->read_ahead = 0;
1833 ret->internal->msg_callback = 0;
1834 ret->internal->msg_callback_arg = NULL;
1835 ret->verify_mode = SSL_VERIFY_NONE;
1836 ret->sid_ctx_length = 0;
1837 ret->internal->default_verify_callback = NULL;
1838 if ((ret->internal->cert = ssl_cert_new()) == NULL)
1839 goto err;
1840
1841 ret->default_passwd_callback = 0;
1842 ret->default_passwd_callback_userdata = NULL;
1843 ret->internal->client_cert_cb = 0;
1844 ret->internal->app_gen_cookie_cb = 0;
1845 ret->internal->app_verify_cookie_cb = 0;
1846
1847 ret->internal->sessions = lh_SSL_SESSION_new();
1848 if (ret->internal->sessions == NULL)
1849 goto err;
1850 ret->cert_store = X509_STORE_new();
1851 if (ret->cert_store == NULL)
1852 goto err;
1853
1854 ssl_create_cipher_list(ret->method, &ret->cipher_list,
1855 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST);
1856 if (ret->cipher_list == NULL ||
1857 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1858 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS);
1859 goto err2;
1860 }
1861
1862 ret->param = X509_VERIFY_PARAM_new();
1863 if (!ret->param)
1864 goto err;
1865
1866 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL)
1867 goto err;
1868
1869 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data);
1870
1871 ret->extra_certs = NULL;
1872
1873 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1874
1875 ret->internal->tlsext_servername_callback = 0;
1876 ret->internal->tlsext_servername_arg = NULL;
1877
1878 /* Setup RFC4507 ticket keys */
1879 arc4random_buf(ret->internal->tlsext_tick_key_name, 16);
1880 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16);
1881 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16);
1882
1883 ret->internal->tlsext_status_cb = 0;
1884 ret->internal->tlsext_status_arg = NULL;
1885
1886 #ifndef OPENSSL_NO_ENGINE
1887 ret->internal->client_cert_engine = NULL;
1888 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1889 #define eng_strx(x) #x
1890 #define eng_str(x) eng_strx(x)
1891 /* Use specific client engine automatically... ignore errors */
1892 {
1893 ENGINE *eng;
1894 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1895 if (!eng) {
1896 ERR_clear_error();
1897 ENGINE_load_builtin_engines();
1898 eng = ENGINE_by_id(eng_str(
1899 OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1900 }
1901 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1902 ERR_clear_error();
1903 }
1904 #endif
1905 #endif
1906 /*
1907 * Default is to connect to non-RI servers. When RI is more widely
1908 * deployed might change this.
1909 */
1910 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1911
1912 return (ret);
1913 err:
1914 SSLerrorx(ERR_R_MALLOC_FAILURE);
1915 err2:
1916 SSL_CTX_free(ret);
1917 return (NULL);
1918 }
1919
1920 void
1921 SSL_CTX_free(SSL_CTX *ctx)
1922 {
1923 int i;
1924
1925 if (ctx == NULL)
1926 return;
1927
1928 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX);
1929 if (i > 0)
1930 return;
1931
1932 X509_VERIFY_PARAM_free(ctx->param);
1933
1934 /*
1935 * Free internal session cache. However: the remove_cb() may reference
1936 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1937 * after the sessions were flushed.
1938 * As the ex_data handling routines might also touch the session cache,
1939 * the most secure solution seems to be: empty (flush) the cache, then
1940 * free ex_data, then finally free the cache.
1941 * (See ticket [openssl.org #212].)
1942 */
1943 if (ctx->internal->sessions != NULL)
1944 SSL_CTX_flush_sessions(ctx, 0);
1945
1946 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data);
1947
1948 lh_SSL_SESSION_free(ctx->internal->sessions);
1949
1950 X509_STORE_free(ctx->cert_store);
1951 sk_SSL_CIPHER_free(ctx->cipher_list);
1952 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id);
1953 ssl_cert_free(ctx->internal->cert);
1954 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free);
1955 sk_X509_pop_free(ctx->extra_certs, X509_free);
1956
1957 #ifndef OPENSSL_NO_SRTP
1958 if (ctx->internal->srtp_profiles)
1959 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles);
1960 #endif
1961
1962 #ifndef OPENSSL_NO_ENGINE
1963 if (ctx->internal->client_cert_engine)
1964 ENGINE_finish(ctx->internal->client_cert_engine);
1965 #endif
1966
1967 free(ctx->internal->tlsext_ecpointformatlist);
1968 free(ctx->internal->tlsext_supportedgroups);
1969
1970 free(ctx->internal->alpn_client_proto_list);
1971
1972 free(ctx->internal);
1973 free(ctx);
1974 }
1975
1976 void
1977 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1978 {
1979 ctx->default_passwd_callback = cb;
1980 }
1981
1982 void
1983 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
1984 {
1985 ctx->default_passwd_callback_userdata = u;
1986 }
1987
1988 void
1989 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,
1990 void *), void *arg)
1991 {
1992 ctx->internal->app_verify_callback = cb;
1993 ctx->internal->app_verify_arg = arg;
1994 }
1995
1996 void
1997 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *))
1998 {
1999 ctx->verify_mode = mode;
2000 ctx->internal->default_verify_callback = cb;
2001 }
2002
2003 void
2004 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2005 {
2006 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2007 }
2008
2009 void
2010 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2011 {
2012 int rsa_enc, rsa_sign, dh_tmp;
2013 int have_ecc_cert;
2014 unsigned long mask_k, mask_a;
2015 X509 *x = NULL;
2016 CERT_PKEY *cpk;
2017
2018 if (c == NULL)
2019 return;
2020
2021 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL ||
2022 c->dh_tmp_auto != 0);
2023
2024 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2025 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL);
2026 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2027 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL);
2028 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2029 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL);
2030
2031 mask_k = 0;
2032 mask_a = 0;
2033
2034 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2035 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2036 mask_k |= SSL_kGOST;
2037 mask_a |= SSL_aGOST01;
2038 }
2039
2040 if (rsa_enc)
2041 mask_k |= SSL_kRSA;
2042
2043 if (dh_tmp)
2044 mask_k |= SSL_kDHE;
2045
2046 if (rsa_enc || rsa_sign)
2047 mask_a |= SSL_aRSA;
2048
2049 mask_a |= SSL_aNULL;
2050
2051 /*
2052 * An ECC certificate may be usable for ECDH and/or
2053 * ECDSA cipher suites depending on the key usage extension.
2054 */
2055 if (have_ecc_cert) {
2056 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2057
2058 /* This call populates extension flags (ex_flags). */
2059 X509_check_purpose(x, -1, 0);
2060
2061 /* Key usage, if present, must allow signing. */
2062 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 ||
2063 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE))
2064 mask_a |= SSL_aECDSA;
2065 }
2066
2067 mask_k |= SSL_kECDHE;
2068
2069 c->mask_k = mask_k;
2070 c->mask_a = mask_a;
2071 c->valid = 1;
2072 }
2073
2074 /* See if this handshake is using an ECC cipher suite. */
2075 int
2076 ssl_using_ecc_cipher(SSL *s)
2077 {
2078 unsigned long alg_a, alg_k;
2079
2080 alg_a = S3I(s)->hs.new_cipher->algorithm_auth;
2081 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey;
2082
2083 return SSI(s)->tlsext_ecpointformatlist != NULL &&
2084 SSI(s)->tlsext_ecpointformatlist_length > 0 &&
2085 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA));
2086 }
2087
2088 int
2089 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2090 {
2091 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher;
2092 unsigned long alg_a;
2093
2094 alg_a = cs->algorithm_auth;
2095
2096 if (alg_a & SSL_aECDSA) {
2097 /* This call populates extension flags (ex_flags). */
2098 X509_check_purpose(x, -1, 0);
2099
2100 /* Key usage, if present, must allow signing. */
2101 if ((x->ex_flags & EXFLAG_KUSAGE) &&
2102 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) {
2103 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2104 return (0);
2105 }
2106 }
2107
2108 return (1);
2109 }
2110
2111 CERT_PKEY *
2112 ssl_get_server_send_pkey(const SSL *s)
2113 {
2114 unsigned long alg_a;
2115 CERT *c;
2116 int i;
2117
2118 c = s->cert;
2119 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher);
2120
2121 alg_a = S3I(s)->hs.new_cipher->algorithm_auth;
2122
2123 if (alg_a & SSL_aECDSA) {
2124 i = SSL_PKEY_ECC;
2125 } else if (alg_a & SSL_aRSA) {
2126 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2127 i = SSL_PKEY_RSA_SIGN;
2128 else
2129 i = SSL_PKEY_RSA_ENC;
2130 } else if (alg_a & SSL_aGOST01) {
2131 i = SSL_PKEY_GOST01;
2132 } else { /* if (alg_a & SSL_aNULL) */
2133 SSLerror(s, ERR_R_INTERNAL_ERROR);
2134 return (NULL);
2135 }
2136
2137 return (c->pkeys + i);
2138 }
2139
2140 X509 *
2141 ssl_get_server_send_cert(const SSL *s)
2142 {
2143 CERT_PKEY *cpk;
2144
2145 cpk = ssl_get_server_send_pkey(s);
2146 if (!cpk)
2147 return (NULL);
2148 return (cpk->x509);
2149 }
2150
2151 EVP_PKEY *
2152 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd)
2153 {
2154 unsigned long alg_a;
2155 CERT *c;
2156 int idx = -1;
2157
2158 alg_a = cipher->algorithm_auth;
2159 c = s->cert;
2160
2161 if (alg_a & SSL_aRSA) {
2162 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2163 idx = SSL_PKEY_RSA_SIGN;
2164 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2165 idx = SSL_PKEY_RSA_ENC;
2166 } else if ((alg_a & SSL_aECDSA) &&
2167 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2168 idx = SSL_PKEY_ECC;
2169 if (idx == -1) {
2170 SSLerror(s, ERR_R_INTERNAL_ERROR);
2171 return (NULL);
2172 }
2173 if (pmd)
2174 *pmd = c->pkeys[idx].digest;
2175 return (c->pkeys[idx].privatekey);
2176 }
2177
2178 DH *
2179 ssl_get_auto_dh(SSL *s)
2180 {
2181 CERT_PKEY *cpk;
2182 int keylen;
2183 DH *dhp;
2184
2185 if (s->cert->dh_tmp_auto == 2) {
2186 keylen = 1024;
2187 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) {
2188 keylen = 1024;
2189 if (S3I(s)->hs.new_cipher->strength_bits == 256)
2190 keylen = 3072;
2191 } else {
2192 if ((cpk = ssl_get_server_send_pkey(s)) == NULL)
2193 return (NULL);
2194 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL)
2195 return (NULL);
2196 keylen = EVP_PKEY_bits(cpk->privatekey);
2197 }
2198
2199 if ((dhp = DH_new()) == NULL)
2200 return (NULL);
2201
2202 dhp->g = BN_new();
2203 if (dhp->g != NULL)
2204 BN_set_word(dhp->g, 2);
2205
2206 if (keylen >= 8192)
2207 dhp->p = get_rfc3526_prime_8192(NULL);
2208 else if (keylen >= 4096)
2209 dhp->p = get_rfc3526_prime_4096(NULL);
2210 else if (keylen >= 3072)
2211 dhp->p = get_rfc3526_prime_3072(NULL);
2212 else if (keylen >= 2048)
2213 dhp->p = get_rfc3526_prime_2048(NULL);
2214 else if (keylen >= 1536)
2215 dhp->p = get_rfc3526_prime_1536(NULL);
2216 else
2217 dhp->p = get_rfc2409_prime_1024(NULL);
2218
2219 if (dhp->p == NULL || dhp->g == NULL) {
2220 DH_free(dhp);
2221 return (NULL);
2222 }
2223 return (dhp);
2224 }
2225
2226 void
2227 ssl_update_cache(SSL *s, int mode)
2228 {
2229 int i;
2230
2231 /*
2232 * If the session_id_length is 0, we are not supposed to cache it,
2233 * and it would be rather hard to do anyway :-)
2234 */
2235 if (s->session->session_id_length == 0)
2236 return;
2237
2238 i = s->session_ctx->internal->session_cache_mode;
2239 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2240 || SSL_CTX_add_session(s->session_ctx, s->session))
2241 && (s->session_ctx->internal->new_session_cb != NULL)) {
2242 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2243 if (!s->session_ctx->internal->new_session_cb(s, s->session))
2244 SSL_SESSION_free(s->session);
2245 }
2246
2247 /* auto flush every 255 connections */
2248 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2249 ((i & mode) == mode)) {
2250 if ((((mode & SSL_SESS_CACHE_CLIENT) ?
2251 s->session_ctx->internal->stats.sess_connect_good :
2252 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) {
2253 SSL_CTX_flush_sessions(s->session_ctx, time(NULL));
2254 }
2255 }
2256 }
2257
2258 const SSL_METHOD *
2259 SSL_get_ssl_method(SSL *s)
2260 {
2261 return (s->method);
2262 }
2263
2264 int
2265 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2266 {
2267 int conn = -1;
2268 int ret = 1;
2269
2270 if (s->method != meth) {
2271 if (s->internal->handshake_func != NULL)
2272 conn = (s->internal->handshake_func == s->method->internal->ssl_connect);
2273
2274 if (s->method->internal->version == meth->internal->version)
2275 s->method = meth;
2276 else {
2277 s->method->internal->ssl_free(s);
2278 s->method = meth;
2279 ret = s->method->internal->ssl_new(s);
2280 }
2281
2282 if (conn == 1)
2283 s->internal->handshake_func = meth->internal->ssl_connect;
2284 else if (conn == 0)
2285 s->internal->handshake_func = meth->internal->ssl_accept;
2286 }
2287 return (ret);
2288 }
2289
2290 int
2291 SSL_get_error(const SSL *s, int i)
2292 {
2293 int reason;
2294 unsigned long l;
2295 BIO *bio;
2296
2297 if (i > 0)
2298 return (SSL_ERROR_NONE);
2299
2300 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2301 * etc, where we do encode the error */
2302 if ((l = ERR_peek_error()) != 0) {
2303 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2304 return (SSL_ERROR_SYSCALL);
2305 else
2306 return (SSL_ERROR_SSL);
2307 }
2308
2309 if ((i < 0) && SSL_want_read(s)) {
2310 bio = SSL_get_rbio(s);
2311 if (BIO_should_read(bio)) {
2312 return (SSL_ERROR_WANT_READ);
2313 } else if (BIO_should_write(bio)) {
2314 /*
2315 * This one doesn't make too much sense... We never
2316 * try to write to the rbio, and an application
2317 * program where rbio and wbio are separate couldn't
2318 * even know what it should wait for. However if we
2319 * ever set s->internal->rwstate incorrectly (so that we have
2320 * SSL_want_read(s) instead of SSL_want_write(s))
2321 * and rbio and wbio *are* the same, this test works
2322 * around that bug; so it might be safer to keep it.
2323 */
2324 return (SSL_ERROR_WANT_WRITE);
2325 } else if (BIO_should_io_special(bio)) {
2326 reason = BIO_get_retry_reason(bio);
2327 if (reason == BIO_RR_CONNECT)
2328 return (SSL_ERROR_WANT_CONNECT);
2329 else if (reason == BIO_RR_ACCEPT)
2330 return (SSL_ERROR_WANT_ACCEPT);
2331 else
2332 return (SSL_ERROR_SYSCALL); /* unknown */
2333 }
2334 }
2335
2336 if ((i < 0) && SSL_want_write(s)) {
2337 bio = SSL_get_wbio(s);
2338 if (BIO_should_write(bio)) {
2339 return (SSL_ERROR_WANT_WRITE);
2340 } else if (BIO_should_read(bio)) {
2341 /*
2342 * See above (SSL_want_read(s) with
2343 * BIO_should_write(bio))
2344 */
2345 return (SSL_ERROR_WANT_READ);
2346 } else if (BIO_should_io_special(bio)) {
2347 reason = BIO_get_retry_reason(bio);
2348 if (reason == BIO_RR_CONNECT)
2349 return (SSL_ERROR_WANT_CONNECT);
2350 else if (reason == BIO_RR_ACCEPT)
2351 return (SSL_ERROR_WANT_ACCEPT);
2352 else
2353 return (SSL_ERROR_SYSCALL);
2354 }
2355 }
2356 if ((i < 0) && SSL_want_x509_lookup(s)) {
2357 return (SSL_ERROR_WANT_X509_LOOKUP);
2358 }
2359
2360 if (i == 0) {
2361 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2362 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY))
2363 return (SSL_ERROR_ZERO_RETURN);
2364 }
2365 return (SSL_ERROR_SYSCALL);
2366 }
2367
2368 int
2369 SSL_do_handshake(SSL *s)
2370 {
2371 int ret = 1;
2372
2373 if (s->internal->handshake_func == NULL) {
2374 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET);
2375 return (-1);
2376 }
2377
2378 s->method->internal->ssl_renegotiate_check(s);
2379
2380 if (SSL_in_init(s) || SSL_in_before(s)) {
2381 ret = s->internal->handshake_func(s);
2382 }
2383 return (ret);
2384 }
2385
2386 /*
2387 * For the next 2 functions, SSL_clear() sets shutdown and so
2388 * one of these calls will reset it
2389 */
2390 void
2391 SSL_set_accept_state(SSL *s)
2392 {
2393 s->server = 1;
2394 s->internal->shutdown = 0;
2395 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE;
2396 s->internal->handshake_func = s->method->internal->ssl_accept;
2397 /* clear the current cipher */
2398 ssl_clear_cipher_ctx(s);
2399 ssl_clear_hash_ctx(&s->read_hash);
2400 ssl_clear_hash_ctx(&s->internal->write_hash);
2401 }
2402
2403 void
2404 SSL_set_connect_state(SSL *s)
2405 {
2406 s->server = 0;
2407 s->internal->shutdown = 0;
2408 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE;
2409 s->internal->handshake_func = s->method->internal->ssl_connect;
2410 /* clear the current cipher */
2411 ssl_clear_cipher_ctx(s);
2412 ssl_clear_hash_ctx(&s->read_hash);
2413 ssl_clear_hash_ctx(&s->internal->write_hash);
2414 }
2415
2416 int
2417 ssl_undefined_function(SSL *s)
2418 {
2419 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2420 return (0);
2421 }
2422
2423 int
2424 ssl_undefined_void_function(void)
2425 {
2426 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2427 return (0);
2428 }
2429
2430 int
2431 ssl_undefined_const_function(const SSL *s)
2432 {
2433 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2434 return (0);
2435 }
2436
2437 const char *
2438 ssl_version_string(int ver)
2439 {
2440 switch (ver) {
2441 case DTLS1_VERSION:
2442 return (SSL_TXT_DTLS1);
2443 case TLS1_VERSION:
2444 return (SSL_TXT_TLSV1);
2445 case TLS1_1_VERSION:
2446 return (SSL_TXT_TLSV1_1);
2447 case TLS1_2_VERSION:
2448 return (SSL_TXT_TLSV1_2);
2449 default:
2450 return ("unknown");
2451 }
2452 }
2453
2454 const char *
2455 SSL_get_version(const SSL *s)
2456 {
2457 return ssl_version_string(s->version);
2458 }
2459
2460 SSL *
2461 SSL_dup(SSL *s)
2462 {
2463 STACK_OF(X509_NAME) *sk;
2464 X509_NAME *xn;
2465 SSL *ret;
2466 int i;
2467
2468 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2469 return (NULL);
2470
2471 ret->version = s->version;
2472 ret->internal->type = s->internal->type;
2473 ret->method = s->method;
2474
2475 if (s->session != NULL) {
2476 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2477 SSL_copy_session_id(ret, s);
2478 } else {
2479 /*
2480 * No session has been established yet, so we have to expect
2481 * that s->cert or ret->cert will be changed later --
2482 * they should not both point to the same object,
2483 * and thus we can't use SSL_copy_session_id.
2484 */
2485
2486 ret->method->internal->ssl_free(ret);
2487 ret->method = s->method;
2488 ret->method->internal->ssl_new(ret);
2489
2490 if (s->cert != NULL) {
2491 ssl_cert_free(ret->cert);
2492 ret->cert = ssl_cert_dup(s->cert);
2493 if (ret->cert == NULL)
2494 goto err;
2495 }
2496
2497 SSL_set_session_id_context(ret,
2498 s->sid_ctx, s->sid_ctx_length);
2499 }
2500
2501 ret->internal->options = s->internal->options;
2502 ret->internal->mode = s->internal->mode;
2503 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2504 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2505 ret->internal->msg_callback = s->internal->msg_callback;
2506 ret->internal->msg_callback_arg = s->internal->msg_callback_arg;
2507 SSL_set_verify(ret, SSL_get_verify_mode(s),
2508 SSL_get_verify_callback(s));
2509 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2510 ret->internal->generate_session_id = s->internal->generate_session_id;
2511
2512 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2513
2514 ret->internal->debug = s->internal->debug;
2515
2516 /* copy app data, a little dangerous perhaps */
2517 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL,
2518 &ret->internal->ex_data, &s->internal->ex_data))
2519 goto err;
2520
2521 /* setup rbio, and wbio */
2522 if (s->rbio != NULL) {
2523 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2524 goto err;
2525 }
2526 if (s->wbio != NULL) {
2527 if (s->wbio != s->rbio) {
2528 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2529 goto err;
2530 } else
2531 ret->wbio = ret->rbio;
2532 }
2533 ret->internal->rwstate = s->internal->rwstate;
2534 ret->internal->in_handshake = s->internal->in_handshake;
2535 ret->internal->handshake_func = s->internal->handshake_func;
2536 ret->server = s->server;
2537 ret->internal->renegotiate = s->internal->renegotiate;
2538 ret->internal->new_session = s->internal->new_session;
2539 ret->internal->quiet_shutdown = s->internal->quiet_shutdown;
2540 ret->internal->shutdown = s->internal->shutdown;
2541 /* SSL_dup does not really work at any state, though */
2542 S3I(ret)->hs.state = S3I(s)->hs.state;
2543 ret->internal->rstate = s->internal->rstate;
2544
2545 /*
2546 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num,
2547 * ret->init_off
2548 */
2549 ret->internal->init_num = 0;
2550
2551 ret->internal->hit = s->internal->hit;
2552
2553 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2554
2555 /* dup the cipher_list and cipher_list_by_id stacks */
2556 if (s->cipher_list != NULL) {
2557 if ((ret->cipher_list =
2558 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2559 goto err;
2560 }
2561 if (s->internal->cipher_list_by_id != NULL) {
2562 if ((ret->internal->cipher_list_by_id =
2563 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL)
2564 goto err;
2565 }
2566
2567 /* Dup the client_CA list */
2568 if (s->internal->client_CA != NULL) {
2569 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err;
2570 ret->internal->client_CA = sk;
2571 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2572 xn = sk_X509_NAME_value(sk, i);
2573 if (sk_X509_NAME_set(sk, i,
2574 X509_NAME_dup(xn)) == NULL) {
2575 X509_NAME_free(xn);
2576 goto err;
2577 }
2578 }
2579 }
2580
2581 if (0) {
2582 err:
2583 if (ret != NULL)
2584 SSL_free(ret);
2585 ret = NULL;
2586 }
2587 return (ret);
2588 }
2589
2590 void
2591 ssl_clear_cipher_ctx(SSL *s)
2592 {
2593 EVP_CIPHER_CTX_free(s->enc_read_ctx);
2594 s->enc_read_ctx = NULL;
2595 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx);
2596 s->internal->enc_write_ctx = NULL;
2597
2598 if (s->internal->aead_read_ctx != NULL) {
2599 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx);
2600 free(s->internal->aead_read_ctx);
2601 s->internal->aead_read_ctx = NULL;
2602 }
2603 if (s->internal->aead_write_ctx != NULL) {
2604 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx);
2605 free(s->internal->aead_write_ctx);
2606 s->internal->aead_write_ctx = NULL;
2607 }
2608
2609 }
2610
2611 /* Fix this function so that it takes an optional type parameter */
2612 X509 *
2613 SSL_get_certificate(const SSL *s)
2614 {
2615 if (s->cert != NULL)
2616 return (s->cert->key->x509);
2617 else
2618 return (NULL);
2619 }
2620
2621 /* Fix this function so that it takes an optional type parameter */
2622 EVP_PKEY *
2623 SSL_get_privatekey(SSL *s)
2624 {
2625 if (s->cert != NULL)
2626 return (s->cert->key->privatekey);
2627 else
2628 return (NULL);
2629 }
2630
2631 const SSL_CIPHER *
2632 SSL_get_current_cipher(const SSL *s)
2633 {
2634 if ((s->session != NULL) && (s->session->cipher != NULL))
2635 return (s->session->cipher);
2636 return (NULL);
2637 }
2638 const void *
2639 SSL_get_current_compression(SSL *s)
2640 {
2641 return (NULL);
2642 }
2643
2644 const void *
2645 SSL_get_current_expansion(SSL *s)
2646 {
2647 return (NULL);
2648 }
2649
2650 int
2651 ssl_init_wbio_buffer(SSL *s, int push)
2652 {
2653 BIO *bbio;
2654
2655 if (s->bbio == NULL) {
2656 bbio = BIO_new(BIO_f_buffer());
2657 if (bbio == NULL)
2658 return (0);
2659 s->bbio = bbio;
2660 } else {
2661 bbio = s->bbio;
2662 if (s->bbio == s->wbio)
2663 s->wbio = BIO_pop(s->wbio);
2664 }
2665 (void)BIO_reset(bbio);
2666 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2667 if (!BIO_set_read_buffer_size(bbio, 1)) {
2668 SSLerror(s, ERR_R_BUF_LIB);
2669 return (0);
2670 }
2671 if (push) {
2672 if (s->wbio != bbio)
2673 s->wbio = BIO_push(bbio, s->wbio);
2674 } else {
2675 if (s->wbio == bbio)
2676 s->wbio = BIO_pop(bbio);
2677 }
2678 return (1);
2679 }
2680
2681 void
2682 ssl_free_wbio_buffer(SSL *s)
2683 {
2684 if (s == NULL)
2685 return;
2686
2687 if (s->bbio == NULL)
2688 return;
2689
2690 if (s->bbio == s->wbio) {
2691 /* remove buffering */
2692 s->wbio = BIO_pop(s->wbio);
2693 }
2694 BIO_free(s->bbio);
2695 s->bbio = NULL;
2696 }
2697
2698 void
2699 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2700 {
2701 ctx->internal->quiet_shutdown = mode;
2702 }
2703
2704 int
2705 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2706 {
2707 return (ctx->internal->quiet_shutdown);
2708 }
2709
2710 void
2711 SSL_set_quiet_shutdown(SSL *s, int mode)
2712 {
2713 s->internal->quiet_shutdown = mode;
2714 }
2715
2716 int
2717 SSL_get_quiet_shutdown(const SSL *s)
2718 {
2719 return (s->internal->quiet_shutdown);
2720 }
2721
2722 void
2723 SSL_set_shutdown(SSL *s, int mode)
2724 {
2725 s->internal->shutdown = mode;
2726 }
2727
2728 int
2729 SSL_get_shutdown(const SSL *s)
2730 {
2731 return (s->internal->shutdown);
2732 }
2733
2734 int
2735 SSL_version(const SSL *s)
2736 {
2737 return (s->version);
2738 }
2739
2740 SSL_CTX *
2741 SSL_get_SSL_CTX(const SSL *ssl)
2742 {
2743 return (ssl->ctx);
2744 }
2745
2746 SSL_CTX *
2747 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2748 {
2749 CERT *ocert = ssl->cert;
2750
2751 if (ssl->ctx == ctx)
2752 return (ssl->ctx);
2753 if (ctx == NULL)
2754 ctx = ssl->initial_ctx;
2755 ssl->cert = ssl_cert_dup(ctx->internal->cert);
2756 if (ocert != NULL) {
2757 int i;
2758 /* Copy negotiated digests from original certificate. */
2759 for (i = 0; i < SSL_PKEY_NUM; i++)
2760 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest;
2761 ssl_cert_free(ocert);
2762 }
2763 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2764 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2765 ssl->ctx = ctx;
2766 return (ssl->ctx);
2767 }
2768
2769 int
2770 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2771 {
2772 return (X509_STORE_set_default_paths(ctx->cert_store));
2773 }
2774
2775 int
2776 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2777 const char *CApath)
2778 {
2779 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2780 }
2781
2782 int
2783 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len)
2784 {
2785 return (X509_STORE_load_mem(ctx->cert_store, buf, len));
2786 }
2787
2788 void
2789 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val))
2790 {
2791 ssl->internal->info_callback = cb;
2792 }
2793
2794 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val)
2795 {
2796 return (ssl->internal->info_callback);
2797 }
2798
2799 int
2800 SSL_state(const SSL *ssl)
2801 {
2802 return (S3I(ssl)->hs.state);
2803 }
2804
2805 void
2806 SSL_set_state(SSL *ssl, int state)
2807 {
2808 S3I(ssl)->hs.state = state;
2809 }
2810
2811 void
2812 SSL_set_verify_result(SSL *ssl, long arg)
2813 {
2814 ssl->verify_result = arg;
2815 }
2816
2817 long
2818 SSL_get_verify_result(const SSL *ssl)
2819 {
2820 return (ssl->verify_result);
2821 }
2822
2823 int
2824 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2825 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
2826 {
2827 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2828 new_func, dup_func, free_func));
2829 }
2830
2831 int
2832 SSL_set_ex_data(SSL *s, int idx, void *arg)
2833 {
2834 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg));
2835 }
2836
2837 void *
2838 SSL_get_ex_data(const SSL *s, int idx)
2839 {
2840 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx));
2841 }
2842
2843 int
2844 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2845 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
2846 {
2847 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2848 new_func, dup_func, free_func));
2849 }
2850
2851 int
2852 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
2853 {
2854 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg));
2855 }
2856
2857 void *
2858 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
2859 {
2860 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx));
2861 }
2862
2863 int
2864 ssl_ok(SSL *s)
2865 {
2866 return (1);
2867 }
2868
2869 X509_STORE *
2870 SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2871 {
2872 return (ctx->cert_store);
2873 }
2874
2875 void
2876 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
2877 {
2878 X509_STORE_free(ctx->cert_store);
2879 ctx->cert_store = store;
2880 }
2881
2882 int
2883 SSL_want(const SSL *s)
2884 {
2885 return (s->internal->rwstate);
2886 }
2887
2888 void
2889 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export,
2890 int keylength))
2891 {
2892 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2893 }
2894
2895 void
2896 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
2897 int keylength))
2898 {
2899 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2900 }
2901
2902 void
2903 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export,
2904 int keylength))
2905 {
2906 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2907 }
2908
2909 void
2910 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export,
2911 int keylength))
2912 {
2913 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2914 }
2915
2916 void
2917 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl,
2918 int is_export, int keylength))
2919 {
2920 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
2921 (void (*)(void))ecdh);
2922 }
2923
2924 void
2925 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export,
2926 int keylength))
2927 {
2928 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2929 }
2930
2931
2932 void
2933 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version,
2934 int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2935 {
2936 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK,
2937 (void (*)(void))cb);
2938 }
2939
2940 void
2941 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version,
2942 int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2943 {
2944 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2945 }
2946
2947 void
2948 ssl_clear_hash_ctx(EVP_MD_CTX **hash)
2949 {
2950 if (*hash)
2951 EVP_MD_CTX_destroy(*hash);
2952 *hash = NULL;
2953 }
2954
2955 void
2956 SSL_set_debug(SSL *s, int debug)
2957 {
2958 s->internal->debug = debug;
2959 }
2960
2961 int
2962 SSL_cache_hit(SSL *s)
2963 {
2964 return (s->internal->hit);
2965 }
2966
2967 int
2968 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version)
2969 {
2970 return ssl_version_set_min(ctx->method, version,
2971 ctx->internal->max_version, &ctx->internal->min_version);
2972 }
2973
2974 int
2975 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version)
2976 {
2977 return ssl_version_set_max(ctx->method, version,
2978 ctx->internal->min_version, &ctx->internal->max_version);
2979 }
2980
2981 int
2982 SSL_set_min_proto_version(SSL *ssl, uint16_t version)
2983 {
2984 return ssl_version_set_min(ssl->method, version,
2985 ssl->internal->max_version, &ssl->internal->min_version);
2986 }
2987
2988 int
2989 SSL_set_max_proto_version(SSL *ssl, uint16_t version)
2990 {
2991 return ssl_version_set_max(ssl->method, version,
2992 ssl->internal->min_version, &ssl->internal->max_version);
2993 }
2994
2995 static int
2996 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
2997 {
2998 SSL_CIPHER const *a = a_;
2999 SSL_CIPHER const *b = b_;
3000 return ssl_cipher_id_cmp(a, b);
3001 }
3002
3003 SSL_CIPHER *
3004 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num)
3005 {
3006 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER),
3007 ssl_cipher_id_cmp_BSEARCH_CMP_FN);
3008 }
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