2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
149 #include "ssl_locl.h"
150 #include <openssl/objects.h>
151 #include <openssl/lhash.h>
152 #include <openssl/x509v3.h>
153 #include <openssl/rand.h>
154 #include <openssl/ocsp.h>
155 #ifndef OPENSSL_NO_DH
156 # include <openssl/dh.h>
158 #ifndef OPENSSL_NO_ENGINE
159 # include <openssl/engine.h>
161 #include <openssl/async.h>
162 #ifndef OPENSSL_NO_CT
163 # include <openssl/ct.h>
166 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
168 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
170 * evil casts, but these functions are only called if there's a library
173 (int (*)(SSL
*, SSL3_RECORD
*, unsigned int, int))ssl_undefined_function
,
174 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
175 ssl_undefined_function
,
176 (int (*)(SSL
*, unsigned char *, unsigned char *, int))
177 ssl_undefined_function
,
178 (int (*)(SSL
*, int))ssl_undefined_function
,
179 (int (*)(SSL
*, const char *, int, unsigned char *))
180 ssl_undefined_function
,
181 0, /* finish_mac_length */
182 NULL
, /* client_finished_label */
183 0, /* client_finished_label_len */
184 NULL
, /* server_finished_label */
185 0, /* server_finished_label_len */
186 (int (*)(int))ssl_undefined_function
,
187 (int (*)(SSL
*, unsigned char *, size_t, const char *,
188 size_t, const unsigned char *, size_t,
189 int use_context
))ssl_undefined_function
,
192 struct ssl_async_args
{
196 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
198 int (*func_read
)(SSL
*, void *, int);
199 int (*func_write
)(SSL
*, const void *, int);
200 int (*func_other
)(SSL
*);
204 static const struct {
209 { DANETLS_MATCHING_FULL
, 0, NID_undef
},
210 { DANETLS_MATCHING_2256
, 1, NID_sha256
},
211 { DANETLS_MATCHING_2512
, 2, NID_sha512
},
214 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
216 const EVP_MD
**mdevp
;
218 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
219 int n
= ((int) mdmax
) + 1; /* int to handle PrivMatch(255) */
222 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
223 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
225 if (mdord
== NULL
|| mdevp
== NULL
) {
227 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
231 /* Install default entries */
232 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
235 if (dane_mds
[i
].nid
== NID_undef
||
236 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
238 mdevp
[dane_mds
[i
].mtype
] = md
;
239 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
249 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
251 OPENSSL_free(dctx
->mdevp
);
254 OPENSSL_free(dctx
->mdord
);
259 static void tlsa_free(danetls_record
*t
)
263 OPENSSL_free(t
->data
);
264 EVP_PKEY_free(t
->spki
);
268 static void dane_final(struct dane_st
*dane
)
270 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
273 sk_X509_pop_free(dane
->certs
, X509_free
);
276 X509_free(dane
->mcert
);
284 * dane_copy - Copy dane configuration, sans verification state.
286 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
291 if (!DANETLS_ENABLED(&from
->dane
))
294 dane_final(&to
->dane
);
296 num
= sk_danetls_record_num(from
->dane
.trecs
);
297 for (i
= 0; i
< num
; ++i
) {
298 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
299 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
300 t
->data
, t
->dlen
) <= 0)
306 static int dane_mtype_set(
307 struct dane_ctx_st
*dctx
,
314 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
315 SSLerr(SSL_F_DANE_MTYPE_SET
,
316 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
320 if (mtype
> dctx
->mdmax
) {
321 const EVP_MD
**mdevp
;
323 int n
= ((int) mtype
) + 1;
325 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
327 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
332 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
334 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
339 /* Zero-fill any gaps */
340 for (i
= dctx
->mdmax
+1; i
< mtype
; ++i
) {
348 dctx
->mdevp
[mtype
] = md
;
349 /* Coerce ordinal of disabled matching types to 0 */
350 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
355 static const EVP_MD
*tlsa_md_get(struct dane_st
*dane
, uint8_t mtype
)
357 if (mtype
> dane
->dctx
->mdmax
)
359 return dane
->dctx
->mdevp
[mtype
];
362 static int dane_tlsa_add(
363 struct dane_st
*dane
,
371 const EVP_MD
*md
= NULL
;
372 int ilen
= (int)dlen
;
375 if (dane
->trecs
== NULL
) {
376 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
380 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
381 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
385 if (usage
> DANETLS_USAGE_LAST
) {
386 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
390 if (selector
> DANETLS_SELECTOR_LAST
) {
391 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
395 if (mtype
!= DANETLS_MATCHING_FULL
) {
396 md
= tlsa_md_get(dane
, mtype
);
398 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
403 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
404 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
408 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
412 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
413 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
418 t
->selector
= selector
;
420 t
->data
= OPENSSL_malloc(ilen
);
421 if (t
->data
== NULL
) {
423 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
426 memcpy(t
->data
, data
, ilen
);
429 /* Validate and cache full certificate or public key */
430 if (mtype
== DANETLS_MATCHING_FULL
) {
431 const unsigned char *p
= data
;
433 EVP_PKEY
*pkey
= NULL
;
436 case DANETLS_SELECTOR_CERT
:
437 if (!d2i_X509(&cert
, &p
, dlen
) || p
< data
||
438 dlen
!= (size_t)(p
- data
)) {
440 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
443 if (X509_get0_pubkey(cert
) == NULL
) {
445 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
449 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
455 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
456 * records that contain full certificates of trust-anchors that are
457 * not present in the wire chain. For usage PKIX-TA(0), we augment
458 * the chain with untrusted Full(0) certificates from DNS, in case
459 * they are missing from the chain.
461 if ((dane
->certs
== NULL
&&
462 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
463 !sk_X509_push(dane
->certs
, cert
)) {
464 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
471 case DANETLS_SELECTOR_SPKI
:
472 if (!d2i_PUBKEY(&pkey
, &p
, dlen
) || p
< data
||
473 dlen
!= (size_t)(p
- data
)) {
475 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
480 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
481 * records that contain full bare keys of trust-anchors that are
482 * not present in the wire chain.
484 if (usage
== DANETLS_USAGE_DANE_TA
)
493 * Find the right insertion point for the new record.
495 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
496 * they can be processed first, as they require no chain building, and no
497 * expiration or hostname checks. Because DANE-EE(3) is numerically
498 * largest, this is accomplished via descending sort by "usage".
500 * We also sort in descending order by matching ordinal to simplify
501 * the implementation of digest agility in the verification code.
503 * The choice of order for the selector is not significant, so we
504 * use the same descending order for consistency.
506 for (i
= 0; i
< sk_danetls_record_num(dane
->trecs
); ++i
) {
507 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
508 if (rec
->usage
> usage
)
510 if (rec
->usage
< usage
)
512 if (rec
->selector
> selector
)
514 if (rec
->selector
< selector
)
516 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
521 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
523 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
526 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
531 static void clear_ciphers(SSL
*s
)
533 /* clear the current cipher */
534 ssl_clear_cipher_ctx(s
);
535 ssl_clear_hash_ctx(&s
->read_hash
);
536 ssl_clear_hash_ctx(&s
->write_hash
);
539 int SSL_clear(SSL
*s
)
541 if (s
->method
== NULL
) {
542 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
546 if (ssl_clear_bad_session(s
)) {
547 SSL_SESSION_free(s
->session
);
555 if (s
->renegotiate
) {
556 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
560 ossl_statem_clear(s
);
562 s
->version
= s
->method
->version
;
563 s
->client_version
= s
->version
;
564 s
->rwstate
= SSL_NOTHING
;
566 BUF_MEM_free(s
->init_buf
);
571 /* Reset DANE verification result state */
574 X509_free(s
->dane
.mcert
);
575 s
->dane
.mcert
= NULL
;
576 s
->dane
.mtlsa
= NULL
;
578 /* Clear the verification result peername */
579 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
582 * Check to see if we were changed into a different method, if so, revert
583 * back if we are not doing session-id reuse.
585 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
586 && (s
->method
!= s
->ctx
->method
)) {
587 s
->method
->ssl_free(s
);
588 s
->method
= s
->ctx
->method
;
589 if (!s
->method
->ssl_new(s
))
592 s
->method
->ssl_clear(s
);
594 RECORD_LAYER_clear(&s
->rlayer
);
599 /** Used to change an SSL_CTXs default SSL method type */
600 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
602 STACK_OF(SSL_CIPHER
) *sk
;
606 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
607 &(ctx
->cipher_list_by_id
),
608 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
609 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
610 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
,
611 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
617 SSL
*SSL_new(SSL_CTX
*ctx
)
622 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
625 if (ctx
->method
== NULL
) {
626 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
630 s
= OPENSSL_zalloc(sizeof(*s
));
634 RECORD_LAYER_init(&s
->rlayer
, s
);
636 s
->options
= ctx
->options
;
637 s
->min_proto_version
= ctx
->min_proto_version
;
638 s
->max_proto_version
= ctx
->max_proto_version
;
640 s
->max_cert_list
= ctx
->max_cert_list
;
644 * Earlier library versions used to copy the pointer to the CERT, not
645 * its contents; only when setting new parameters for the per-SSL
646 * copy, ssl_cert_new would be called (and the direct reference to
647 * the per-SSL_CTX settings would be lost, but those still were
648 * indirectly accessed for various purposes, and for that reason they
649 * used to be known as s->ctx->default_cert). Now we don't look at the
650 * SSL_CTX's CERT after having duplicated it once.
652 s
->cert
= ssl_cert_dup(ctx
->cert
);
656 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
657 s
->msg_callback
= ctx
->msg_callback
;
658 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
659 s
->verify_mode
= ctx
->verify_mode
;
660 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
661 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
662 OPENSSL_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
);
663 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
664 s
->verify_callback
= ctx
->default_verify_callback
;
665 s
->generate_session_id
= ctx
->generate_session_id
;
667 s
->param
= X509_VERIFY_PARAM_new();
668 if (s
->param
== NULL
)
670 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
671 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
672 s
->max_send_fragment
= ctx
->max_send_fragment
;
673 s
->split_send_fragment
= ctx
->split_send_fragment
;
674 s
->max_pipelines
= ctx
->max_pipelines
;
675 if (s
->max_pipelines
> 1)
676 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
677 if (ctx
->default_read_buf_len
> 0)
678 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
680 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
682 s
->tlsext_debug_cb
= 0;
683 s
->tlsext_debug_arg
= NULL
;
684 s
->tlsext_ticket_expected
= 0;
685 s
->tlsext_status_type
= -1;
686 s
->tlsext_status_expected
= 0;
687 s
->tlsext_ocsp_ids
= NULL
;
688 s
->tlsext_ocsp_exts
= NULL
;
689 s
->tlsext_ocsp_resp
= NULL
;
690 s
->tlsext_ocsp_resplen
= -1;
691 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
692 s
->initial_ctx
= ctx
;
693 # ifndef OPENSSL_NO_EC
694 if (ctx
->tlsext_ecpointformatlist
) {
695 s
->tlsext_ecpointformatlist
=
696 OPENSSL_memdup(ctx
->tlsext_ecpointformatlist
,
697 ctx
->tlsext_ecpointformatlist_length
);
698 if (!s
->tlsext_ecpointformatlist
)
700 s
->tlsext_ecpointformatlist_length
=
701 ctx
->tlsext_ecpointformatlist_length
;
703 if (ctx
->tlsext_ellipticcurvelist
) {
704 s
->tlsext_ellipticcurvelist
=
705 OPENSSL_memdup(ctx
->tlsext_ellipticcurvelist
,
706 ctx
->tlsext_ellipticcurvelist_length
);
707 if (!s
->tlsext_ellipticcurvelist
)
709 s
->tlsext_ellipticcurvelist_length
=
710 ctx
->tlsext_ellipticcurvelist_length
;
713 # ifndef OPENSSL_NO_NEXTPROTONEG
714 s
->next_proto_negotiated
= NULL
;
717 if (s
->ctx
->alpn_client_proto_list
) {
718 s
->alpn_client_proto_list
=
719 OPENSSL_malloc(s
->ctx
->alpn_client_proto_list_len
);
720 if (s
->alpn_client_proto_list
== NULL
)
722 memcpy(s
->alpn_client_proto_list
, s
->ctx
->alpn_client_proto_list
,
723 s
->ctx
->alpn_client_proto_list_len
);
724 s
->alpn_client_proto_list_len
= s
->ctx
->alpn_client_proto_list_len
;
727 s
->verified_chain
= NULL
;
728 s
->verify_result
= X509_V_OK
;
730 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
731 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
733 s
->method
= ctx
->method
;
735 if (!s
->method
->ssl_new(s
))
738 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
743 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
745 #ifndef OPENSSL_NO_PSK
746 s
->psk_client_callback
= ctx
->psk_client_callback
;
747 s
->psk_server_callback
= ctx
->psk_server_callback
;
752 #ifndef OPENSSL_NO_CT
753 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
754 ctx
->ct_validation_callback_arg
))
761 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
765 void SSL_up_ref(SSL
*s
)
767 CRYPTO_add(&s
->references
, 1, CRYPTO_LOCK_SSL
);
770 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
771 unsigned int sid_ctx_len
)
773 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
774 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
775 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
778 ctx
->sid_ctx_length
= sid_ctx_len
;
779 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
784 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
785 unsigned int sid_ctx_len
)
787 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
788 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
789 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
792 ssl
->sid_ctx_length
= sid_ctx_len
;
793 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
798 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
800 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
801 ctx
->generate_session_id
= cb
;
802 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
806 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
808 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
809 ssl
->generate_session_id
= cb
;
810 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
814 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
818 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
819 * we can "construct" a session to give us the desired check - ie. to
820 * find if there's a session in the hash table that would conflict with
821 * any new session built out of this id/id_len and the ssl_version in use
826 if (id_len
> sizeof r
.session_id
)
829 r
.ssl_version
= ssl
->version
;
830 r
.session_id_length
= id_len
;
831 memcpy(r
.session_id
, id
, id_len
);
833 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
834 p
= lh_SSL_SESSION_retrieve(ssl
->ctx
->sessions
, &r
);
835 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
839 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
841 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
844 int SSL_set_purpose(SSL
*s
, int purpose
)
846 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
849 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
851 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
854 int SSL_set_trust(SSL
*s
, int trust
)
856 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
859 int SSL_set1_host(SSL
*s
, const char *hostname
)
861 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
864 int SSL_add1_host(SSL
*s
, const char *hostname
)
866 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
869 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
871 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
874 const char *SSL_get0_peername(SSL
*s
)
876 return X509_VERIFY_PARAM_get0_peername(s
->param
);
879 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
881 return dane_ctx_enable(&ctx
->dane
);
884 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
886 struct dane_st
*dane
= &s
->dane
;
888 if (s
->ctx
->dane
.mdmax
== 0) {
889 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
892 if (dane
->trecs
!= NULL
) {
893 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
898 * Default SNI name. This rejects empty names, while set1_host below
899 * accepts them and disables host name checks. To avoid side-effects with
900 * invalid input, set the SNI name first.
902 if (s
->tlsext_hostname
== NULL
) {
903 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
904 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
909 /* Primary RFC6125 reference identifier */
910 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
911 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
917 dane
->dctx
= &s
->ctx
->dane
;
918 dane
->trecs
= sk_danetls_record_new_null();
920 if (dane
->trecs
== NULL
) {
921 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
927 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
929 struct dane_st
*dane
= &s
->dane
;
931 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
935 *mcert
= dane
->mcert
;
937 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
942 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
943 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
945 struct dane_st
*dane
= &s
->dane
;
947 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
951 *usage
= dane
->mtlsa
->usage
;
953 *selector
= dane
->mtlsa
->selector
;
955 *mtype
= dane
->mtlsa
->mtype
;
957 *data
= dane
->mtlsa
->data
;
959 *dlen
= dane
->mtlsa
->dlen
;
964 struct dane_st
*SSL_get0_dane(SSL
*s
)
969 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
970 uint8_t mtype
, unsigned char *data
, size_t dlen
)
972 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
975 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
977 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
980 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
982 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
985 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
987 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
990 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
995 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1000 void SSL_certs_clear(SSL
*s
)
1002 ssl_cert_clear_certs(s
->cert
);
1005 void SSL_free(SSL
*s
)
1012 i
= CRYPTO_add(&s
->references
, -1, CRYPTO_LOCK_SSL
);
1013 REF_PRINT_COUNT("SSL", s
);
1016 REF_ASSERT_ISNT(i
< 0);
1018 X509_VERIFY_PARAM_free(s
->param
);
1019 dane_final(&s
->dane
);
1020 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1022 if (s
->bbio
!= NULL
) {
1023 /* If the buffering BIO is in place, pop it off */
1024 if (s
->bbio
== s
->wbio
) {
1025 s
->wbio
= BIO_pop(s
->wbio
);
1030 BIO_free_all(s
->rbio
);
1031 if (s
->wbio
!= s
->rbio
)
1032 BIO_free_all(s
->wbio
);
1034 BUF_MEM_free(s
->init_buf
);
1036 /* add extra stuff */
1037 sk_SSL_CIPHER_free(s
->cipher_list
);
1038 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1040 /* Make the next call work :-) */
1041 if (s
->session
!= NULL
) {
1042 ssl_clear_bad_session(s
);
1043 SSL_SESSION_free(s
->session
);
1048 ssl_cert_free(s
->cert
);
1049 /* Free up if allocated */
1051 OPENSSL_free(s
->tlsext_hostname
);
1052 SSL_CTX_free(s
->initial_ctx
);
1053 #ifndef OPENSSL_NO_EC
1054 OPENSSL_free(s
->tlsext_ecpointformatlist
);
1055 OPENSSL_free(s
->tlsext_ellipticcurvelist
);
1056 #endif /* OPENSSL_NO_EC */
1057 sk_X509_EXTENSION_pop_free(s
->tlsext_ocsp_exts
, X509_EXTENSION_free
);
1058 sk_OCSP_RESPID_pop_free(s
->tlsext_ocsp_ids
, OCSP_RESPID_free
);
1059 #ifndef OPENSSL_NO_CT
1060 SCT_LIST_free(s
->scts
);
1061 OPENSSL_free(s
->tlsext_scts
);
1063 OPENSSL_free(s
->tlsext_ocsp_resp
);
1064 OPENSSL_free(s
->alpn_client_proto_list
);
1066 sk_X509_NAME_pop_free(s
->client_CA
, X509_NAME_free
);
1068 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1070 if (s
->method
!= NULL
)
1071 s
->method
->ssl_free(s
);
1073 RECORD_LAYER_release(&s
->rlayer
);
1075 SSL_CTX_free(s
->ctx
);
1077 ASYNC_WAIT_CTX_free(s
->waitctx
);
1079 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1080 OPENSSL_free(s
->next_proto_negotiated
);
1083 #ifndef OPENSSL_NO_SRTP
1084 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1090 void SSL_set_rbio(SSL
*s
, BIO
*rbio
)
1092 if (s
->rbio
!= rbio
)
1093 BIO_free_all(s
->rbio
);
1097 void SSL_set_wbio(SSL
*s
, BIO
*wbio
)
1100 * If the output buffering BIO is still in place, remove it
1102 if (s
->bbio
!= NULL
) {
1103 if (s
->wbio
== s
->bbio
) {
1104 s
->wbio
= s
->wbio
->next_bio
;
1105 s
->bbio
->next_bio
= NULL
;
1108 if (s
->wbio
!= wbio
&& s
->rbio
!= s
->wbio
)
1109 BIO_free_all(s
->wbio
);
1113 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1115 SSL_set_wbio(s
, wbio
);
1116 SSL_set_rbio(s
, rbio
);
1119 BIO
*SSL_get_rbio(const SSL
*s
)
1124 BIO
*SSL_get_wbio(const SSL
*s
)
1129 int SSL_get_fd(const SSL
*s
)
1131 return (SSL_get_rfd(s
));
1134 int SSL_get_rfd(const SSL
*s
)
1139 b
= SSL_get_rbio(s
);
1140 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1142 BIO_get_fd(r
, &ret
);
1146 int SSL_get_wfd(const SSL
*s
)
1151 b
= SSL_get_wbio(s
);
1152 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1154 BIO_get_fd(r
, &ret
);
1158 #ifndef OPENSSL_NO_SOCK
1159 int SSL_set_fd(SSL
*s
, int fd
)
1164 bio
= BIO_new(BIO_s_socket());
1167 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1170 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1171 SSL_set_bio(s
, bio
, bio
);
1177 int SSL_set_wfd(SSL
*s
, int fd
)
1182 if ((s
->rbio
== NULL
) || (BIO_method_type(s
->rbio
) != BIO_TYPE_SOCKET
)
1183 || ((int)BIO_get_fd(s
->rbio
, NULL
) != fd
)) {
1184 bio
= BIO_new(BIO_s_socket());
1187 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1190 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1191 SSL_set_bio(s
, SSL_get_rbio(s
), bio
);
1193 SSL_set_bio(s
, SSL_get_rbio(s
), SSL_get_rbio(s
));
1199 int SSL_set_rfd(SSL
*s
, int fd
)
1204 if ((s
->wbio
== NULL
) || (BIO_method_type(s
->wbio
) != BIO_TYPE_SOCKET
)
1205 || ((int)BIO_get_fd(s
->wbio
, NULL
) != fd
)) {
1206 bio
= BIO_new(BIO_s_socket());
1209 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1212 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1213 SSL_set_bio(s
, bio
, SSL_get_wbio(s
));
1215 SSL_set_bio(s
, SSL_get_wbio(s
), SSL_get_wbio(s
));
1222 /* return length of latest Finished message we sent, copy to 'buf' */
1223 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1227 if (s
->s3
!= NULL
) {
1228 ret
= s
->s3
->tmp
.finish_md_len
;
1231 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1236 /* return length of latest Finished message we expected, copy to 'buf' */
1237 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1241 if (s
->s3
!= NULL
) {
1242 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1245 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1250 int SSL_get_verify_mode(const SSL
*s
)
1252 return (s
->verify_mode
);
1255 int SSL_get_verify_depth(const SSL
*s
)
1257 return X509_VERIFY_PARAM_get_depth(s
->param
);
1260 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1261 return (s
->verify_callback
);
1264 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1266 return (ctx
->verify_mode
);
1269 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1271 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1274 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1275 return (ctx
->default_verify_callback
);
1278 void SSL_set_verify(SSL
*s
, int mode
,
1279 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1281 s
->verify_mode
= mode
;
1282 if (callback
!= NULL
)
1283 s
->verify_callback
= callback
;
1286 void SSL_set_verify_depth(SSL
*s
, int depth
)
1288 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1291 void SSL_set_read_ahead(SSL
*s
, int yes
)
1293 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1296 int SSL_get_read_ahead(const SSL
*s
)
1298 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1301 int SSL_pending(const SSL
*s
)
1304 * SSL_pending cannot work properly if read-ahead is enabled
1305 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1306 * impossible to fix since SSL_pending cannot report errors that may be
1307 * observed while scanning the new data. (Note that SSL_pending() is
1308 * often used as a boolean value, so we'd better not return -1.)
1310 return (s
->method
->ssl_pending(s
));
1313 int SSL_has_pending(const SSL
*s
)
1316 * Similar to SSL_pending() but returns a 1 to indicate that we have
1317 * unprocessed data available or 0 otherwise (as opposed to the number of
1318 * bytes available). Unlike SSL_pending() this will take into account
1319 * read_ahead data. A 1 return simply indicates that we have unprocessed
1320 * data. That data may not result in any application data, or we may fail
1321 * to parse the records for some reason.
1326 return RECORD_LAYER_read_pending(&s
->rlayer
);
1329 X509
*SSL_get_peer_certificate(const SSL
*s
)
1333 if ((s
== NULL
) || (s
->session
== NULL
))
1336 r
= s
->session
->peer
;
1346 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1350 if ((s
== NULL
) || (s
->session
== NULL
))
1353 r
= s
->session
->peer_chain
;
1356 * If we are a client, cert_chain includes the peer's own certificate; if
1357 * we are a server, it does not.
1364 * Now in theory, since the calling process own 't' it should be safe to
1365 * modify. We need to be able to read f without being hassled
1367 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1369 /* Do we need to to SSL locking? */
1370 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1375 * what if we are setup for one protocol version but want to talk another
1377 if (t
->method
!= f
->method
) {
1378 t
->method
->ssl_free(t
);
1379 t
->method
= f
->method
;
1380 if (t
->method
->ssl_new(t
) == 0)
1384 CRYPTO_add(&f
->cert
->references
, 1, CRYPTO_LOCK_SSL_CERT
);
1385 ssl_cert_free(t
->cert
);
1387 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, f
->sid_ctx_length
)) {
1394 /* Fix this so it checks all the valid key/cert options */
1395 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1397 if ((ctx
== NULL
) ||
1398 (ctx
->cert
->key
->x509
== NULL
)) {
1399 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
,
1400 SSL_R_NO_CERTIFICATE_ASSIGNED
);
1403 if (ctx
->cert
->key
->privatekey
== NULL
) {
1404 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
,
1405 SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1408 return (X509_check_private_key
1409 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1412 /* Fix this function so that it takes an optional type parameter */
1413 int SSL_check_private_key(const SSL
*ssl
)
1416 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1419 if (ssl
->cert
->key
->x509
== NULL
) {
1420 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1423 if (ssl
->cert
->key
->privatekey
== NULL
) {
1424 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1427 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1428 ssl
->cert
->key
->privatekey
));
1431 int SSL_waiting_for_async(SSL
*s
)
1439 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1441 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1445 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1448 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1449 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1451 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1455 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1459 int SSL_accept(SSL
*s
)
1461 if (s
->handshake_func
== NULL
) {
1462 /* Not properly initialized yet */
1463 SSL_set_accept_state(s
);
1466 return SSL_do_handshake(s
);
1469 int SSL_connect(SSL
*s
)
1471 if (s
->handshake_func
== NULL
) {
1472 /* Not properly initialized yet */
1473 SSL_set_connect_state(s
);
1476 return SSL_do_handshake(s
);
1479 long SSL_get_default_timeout(const SSL
*s
)
1481 return (s
->method
->get_timeout());
1484 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1485 int (*func
)(void *)) {
1487 if (s
->waitctx
== NULL
) {
1488 s
->waitctx
= ASYNC_WAIT_CTX_new();
1489 if (s
->waitctx
== NULL
)
1492 switch(ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1493 sizeof(struct ssl_async_args
))) {
1495 s
->rwstate
= SSL_NOTHING
;
1496 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1499 s
->rwstate
= SSL_ASYNC_PAUSED
;
1505 s
->rwstate
= SSL_NOTHING
;
1506 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1507 /* Shouldn't happen */
1512 static int ssl_io_intern(void *vargs
)
1514 struct ssl_async_args
*args
;
1519 args
= (struct ssl_async_args
*)vargs
;
1523 switch (args
->type
) {
1525 return args
->f
.func_read(s
, buf
, num
);
1527 return args
->f
.func_write(s
, buf
, num
);
1529 return args
->f
.func_other(s
);
1534 int SSL_read(SSL
*s
, void *buf
, int num
)
1536 if (s
->handshake_func
== NULL
) {
1537 SSLerr(SSL_F_SSL_READ
, SSL_R_UNINITIALIZED
);
1541 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1542 s
->rwstate
= SSL_NOTHING
;
1546 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1547 struct ssl_async_args args
;
1552 args
.type
= READFUNC
;
1553 args
.f
.func_read
= s
->method
->ssl_read
;
1555 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1557 return s
->method
->ssl_read(s
, buf
, num
);
1561 int SSL_peek(SSL
*s
, void *buf
, int num
)
1563 if (s
->handshake_func
== NULL
) {
1564 SSLerr(SSL_F_SSL_PEEK
, SSL_R_UNINITIALIZED
);
1568 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1571 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1572 struct ssl_async_args args
;
1577 args
.type
= READFUNC
;
1578 args
.f
.func_read
= s
->method
->ssl_peek
;
1580 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1582 return s
->method
->ssl_peek(s
, buf
, num
);
1586 int SSL_write(SSL
*s
, const void *buf
, int num
)
1588 if (s
->handshake_func
== NULL
) {
1589 SSLerr(SSL_F_SSL_WRITE
, SSL_R_UNINITIALIZED
);
1593 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1594 s
->rwstate
= SSL_NOTHING
;
1595 SSLerr(SSL_F_SSL_WRITE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1599 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1600 struct ssl_async_args args
;
1603 args
.buf
= (void *)buf
;
1605 args
.type
= WRITEFUNC
;
1606 args
.f
.func_write
= s
->method
->ssl_write
;
1608 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1610 return s
->method
->ssl_write(s
, buf
, num
);
1614 int SSL_shutdown(SSL
*s
)
1617 * Note that this function behaves differently from what one might
1618 * expect. Return values are 0 for no success (yet), 1 for success; but
1619 * calling it once is usually not enough, even if blocking I/O is used
1620 * (see ssl3_shutdown).
1623 if (s
->handshake_func
== NULL
) {
1624 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1628 if (!SSL_in_init(s
)) {
1629 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1630 struct ssl_async_args args
;
1633 args
.type
= OTHERFUNC
;
1634 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1636 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1638 return s
->method
->ssl_shutdown(s
);
1641 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1646 int SSL_renegotiate(SSL
*s
)
1648 if (s
->renegotiate
== 0)
1653 return (s
->method
->ssl_renegotiate(s
));
1656 int SSL_renegotiate_abbreviated(SSL
*s
)
1658 if (s
->renegotiate
== 0)
1663 return (s
->method
->ssl_renegotiate(s
));
1666 int SSL_renegotiate_pending(SSL
*s
)
1669 * becomes true when negotiation is requested; false again once a
1670 * handshake has finished
1672 return (s
->renegotiate
!= 0);
1675 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1680 case SSL_CTRL_GET_READ_AHEAD
:
1681 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1682 case SSL_CTRL_SET_READ_AHEAD
:
1683 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1684 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1687 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1688 s
->msg_callback_arg
= parg
;
1692 return (s
->mode
|= larg
);
1693 case SSL_CTRL_CLEAR_MODE
:
1694 return (s
->mode
&= ~larg
);
1695 case SSL_CTRL_GET_MAX_CERT_LIST
:
1696 return (s
->max_cert_list
);
1697 case SSL_CTRL_SET_MAX_CERT_LIST
:
1698 l
= s
->max_cert_list
;
1699 s
->max_cert_list
= larg
;
1701 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1702 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1704 s
->max_send_fragment
= larg
;
1705 if (s
->max_send_fragment
< s
->split_send_fragment
)
1706 s
->split_send_fragment
= s
->max_send_fragment
;
1708 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1709 if (larg
> s
->max_send_fragment
|| larg
== 0)
1711 s
->split_send_fragment
= larg
;
1713 case SSL_CTRL_SET_MAX_PIPELINES
:
1714 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1716 s
->max_pipelines
= larg
;
1718 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1720 case SSL_CTRL_GET_RI_SUPPORT
:
1722 return s
->s3
->send_connection_binding
;
1725 case SSL_CTRL_CERT_FLAGS
:
1726 return (s
->cert
->cert_flags
|= larg
);
1727 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1728 return (s
->cert
->cert_flags
&= ~larg
);
1730 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1732 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1734 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1735 return (int)s
->s3
->tmp
.ciphers_rawlen
;
1737 return TLS_CIPHER_LEN
;
1739 case SSL_CTRL_GET_EXTMS_SUPPORT
:
1740 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
1742 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
1746 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1747 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1748 &s
->min_proto_version
);
1749 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1750 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1751 &s
->max_proto_version
);
1753 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
1757 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
1760 case SSL_CTRL_SET_MSG_CALLBACK
:
1761 s
->msg_callback
= (void (*)
1762 (int write_p
, int version
, int content_type
,
1763 const void *buf
, size_t len
, SSL
*ssl
,
1768 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
1772 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
1774 return ctx
->sessions
;
1777 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
1780 /* For some cases with ctx == NULL perform syntax checks */
1783 #ifndef OPENSSL_NO_EC
1784 case SSL_CTRL_SET_CURVES_LIST
:
1785 return tls1_set_curves_list(NULL
, NULL
, parg
);
1787 case SSL_CTRL_SET_SIGALGS_LIST
:
1788 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
1789 return tls1_set_sigalgs_list(NULL
, parg
, 0);
1796 case SSL_CTRL_GET_READ_AHEAD
:
1797 return (ctx
->read_ahead
);
1798 case SSL_CTRL_SET_READ_AHEAD
:
1799 l
= ctx
->read_ahead
;
1800 ctx
->read_ahead
= larg
;
1803 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1804 ctx
->msg_callback_arg
= parg
;
1807 case SSL_CTRL_GET_MAX_CERT_LIST
:
1808 return (ctx
->max_cert_list
);
1809 case SSL_CTRL_SET_MAX_CERT_LIST
:
1810 l
= ctx
->max_cert_list
;
1811 ctx
->max_cert_list
= larg
;
1814 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
1815 l
= ctx
->session_cache_size
;
1816 ctx
->session_cache_size
= larg
;
1818 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
1819 return (ctx
->session_cache_size
);
1820 case SSL_CTRL_SET_SESS_CACHE_MODE
:
1821 l
= ctx
->session_cache_mode
;
1822 ctx
->session_cache_mode
= larg
;
1824 case SSL_CTRL_GET_SESS_CACHE_MODE
:
1825 return (ctx
->session_cache_mode
);
1827 case SSL_CTRL_SESS_NUMBER
:
1828 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
1829 case SSL_CTRL_SESS_CONNECT
:
1830 return (ctx
->stats
.sess_connect
);
1831 case SSL_CTRL_SESS_CONNECT_GOOD
:
1832 return (ctx
->stats
.sess_connect_good
);
1833 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
1834 return (ctx
->stats
.sess_connect_renegotiate
);
1835 case SSL_CTRL_SESS_ACCEPT
:
1836 return (ctx
->stats
.sess_accept
);
1837 case SSL_CTRL_SESS_ACCEPT_GOOD
:
1838 return (ctx
->stats
.sess_accept_good
);
1839 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
1840 return (ctx
->stats
.sess_accept_renegotiate
);
1841 case SSL_CTRL_SESS_HIT
:
1842 return (ctx
->stats
.sess_hit
);
1843 case SSL_CTRL_SESS_CB_HIT
:
1844 return (ctx
->stats
.sess_cb_hit
);
1845 case SSL_CTRL_SESS_MISSES
:
1846 return (ctx
->stats
.sess_miss
);
1847 case SSL_CTRL_SESS_TIMEOUTS
:
1848 return (ctx
->stats
.sess_timeout
);
1849 case SSL_CTRL_SESS_CACHE_FULL
:
1850 return (ctx
->stats
.sess_cache_full
);
1852 return (ctx
->mode
|= larg
);
1853 case SSL_CTRL_CLEAR_MODE
:
1854 return (ctx
->mode
&= ~larg
);
1855 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1856 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1858 ctx
->max_send_fragment
= larg
;
1859 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
1860 ctx
->split_send_fragment
= ctx
->split_send_fragment
;
1862 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1863 if (larg
> ctx
->max_send_fragment
|| larg
== 0)
1865 ctx
->split_send_fragment
= larg
;
1867 case SSL_CTRL_SET_MAX_PIPELINES
:
1868 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1870 ctx
->max_pipelines
= larg
;
1872 case SSL_CTRL_CERT_FLAGS
:
1873 return (ctx
->cert
->cert_flags
|= larg
);
1874 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1875 return (ctx
->cert
->cert_flags
&= ~larg
);
1876 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1877 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
1878 &ctx
->min_proto_version
);
1879 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1880 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
1881 &ctx
->max_proto_version
);
1883 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
1887 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
1890 case SSL_CTRL_SET_MSG_CALLBACK
:
1891 ctx
->msg_callback
= (void (*)
1892 (int write_p
, int version
, int content_type
,
1893 const void *buf
, size_t len
, SSL
*ssl
,
1898 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
1902 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
1911 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
1912 const SSL_CIPHER
*const *bp
)
1914 if ((*ap
)->id
> (*bp
)->id
)
1916 if ((*ap
)->id
< (*bp
)->id
)
1921 /** return a STACK of the ciphers available for the SSL and in order of
1923 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
1926 if (s
->cipher_list
!= NULL
) {
1927 return (s
->cipher_list
);
1928 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
1929 return (s
->ctx
->cipher_list
);
1935 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
1937 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
1939 return s
->session
->ciphers
;
1942 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
1944 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
1946 ciphers
= SSL_get_ciphers(s
);
1949 ssl_set_client_disabled(s
);
1950 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
1951 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
1952 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
)) {
1954 sk
= sk_SSL_CIPHER_new_null();
1957 if (!sk_SSL_CIPHER_push(sk
, c
)) {
1958 sk_SSL_CIPHER_free(sk
);
1966 /** return a STACK of the ciphers available for the SSL and in order of
1968 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
1971 if (s
->cipher_list_by_id
!= NULL
) {
1972 return (s
->cipher_list_by_id
);
1973 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
1974 return (s
->ctx
->cipher_list_by_id
);
1980 /** The old interface to get the same thing as SSL_get_ciphers() */
1981 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
1983 const SSL_CIPHER
*c
;
1984 STACK_OF(SSL_CIPHER
) *sk
;
1988 sk
= SSL_get_ciphers(s
);
1989 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
1991 c
= sk_SSL_CIPHER_value(sk
, n
);
1997 /** specify the ciphers to be used by default by the SSL_CTX */
1998 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2000 STACK_OF(SSL_CIPHER
) *sk
;
2002 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2003 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2005 * ssl_create_cipher_list may return an empty stack if it was unable to
2006 * find a cipher matching the given rule string (for example if the rule
2007 * string specifies a cipher which has been disabled). This is not an
2008 * error as far as ssl_create_cipher_list is concerned, and hence
2009 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2013 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2014 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2020 /** specify the ciphers to be used by the SSL */
2021 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2023 STACK_OF(SSL_CIPHER
) *sk
;
2025 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2026 &s
->cipher_list_by_id
, str
, s
->cert
);
2027 /* see comment in SSL_CTX_set_cipher_list */
2030 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2031 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2037 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2040 STACK_OF(SSL_CIPHER
) *sk
;
2041 const SSL_CIPHER
*c
;
2044 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2048 sk
= s
->session
->ciphers
;
2050 if (sk_SSL_CIPHER_num(sk
) == 0)
2053 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2056 c
= sk_SSL_CIPHER_value(sk
, i
);
2057 n
= strlen(c
->name
);
2064 memcpy(p
, c
->name
, n
+ 1);
2073 /** return a servername extension value if provided in Client Hello, or NULL.
2074 * So far, only host_name types are defined (RFC 3546).
2077 const char *SSL_get_servername(const SSL
*s
, const int type
)
2079 if (type
!= TLSEXT_NAMETYPE_host_name
)
2082 return s
->session
&& !s
->tlsext_hostname
?
2083 s
->session
->tlsext_hostname
: s
->tlsext_hostname
;
2086 int SSL_get_servername_type(const SSL
*s
)
2089 && (!s
->tlsext_hostname
? s
->session
->
2090 tlsext_hostname
: s
->tlsext_hostname
))
2091 return TLSEXT_NAMETYPE_host_name
;
2096 * SSL_select_next_proto implements the standard protocol selection. It is
2097 * expected that this function is called from the callback set by
2098 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2099 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2100 * not included in the length. A byte string of length 0 is invalid. No byte
2101 * string may be truncated. The current, but experimental algorithm for
2102 * selecting the protocol is: 1) If the server doesn't support NPN then this
2103 * is indicated to the callback. In this case, the client application has to
2104 * abort the connection or have a default application level protocol. 2) If
2105 * the server supports NPN, but advertises an empty list then the client
2106 * selects the first protcol in its list, but indicates via the API that this
2107 * fallback case was enacted. 3) Otherwise, the client finds the first
2108 * protocol in the server's list that it supports and selects this protocol.
2109 * This is because it's assumed that the server has better information about
2110 * which protocol a client should use. 4) If the client doesn't support any
2111 * of the server's advertised protocols, then this is treated the same as
2112 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2113 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2115 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2116 const unsigned char *server
,
2117 unsigned int server_len
,
2118 const unsigned char *client
,
2119 unsigned int client_len
)
2122 const unsigned char *result
;
2123 int status
= OPENSSL_NPN_UNSUPPORTED
;
2126 * For each protocol in server preference order, see if we support it.
2128 for (i
= 0; i
< server_len
;) {
2129 for (j
= 0; j
< client_len
;) {
2130 if (server
[i
] == client
[j
] &&
2131 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2132 /* We found a match */
2133 result
= &server
[i
];
2134 status
= OPENSSL_NPN_NEGOTIATED
;
2144 /* There's no overlap between our protocols and the server's list. */
2146 status
= OPENSSL_NPN_NO_OVERLAP
;
2149 *out
= (unsigned char *)result
+ 1;
2150 *outlen
= result
[0];
2154 #ifndef OPENSSL_NO_NEXTPROTONEG
2156 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2157 * client's requested protocol for this connection and returns 0. If the
2158 * client didn't request any protocol, then *data is set to NULL. Note that
2159 * the client can request any protocol it chooses. The value returned from
2160 * this function need not be a member of the list of supported protocols
2161 * provided by the callback.
2163 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2166 *data
= s
->next_proto_negotiated
;
2170 *len
= s
->next_proto_negotiated_len
;
2175 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2176 * a TLS server needs a list of supported protocols for Next Protocol
2177 * Negotiation. The returned list must be in wire format. The list is
2178 * returned by setting |out| to point to it and |outlen| to its length. This
2179 * memory will not be modified, but one should assume that the SSL* keeps a
2180 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2181 * wishes to advertise. Otherwise, no such extension will be included in the
2184 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX
*ctx
,
2185 int (*cb
) (SSL
*ssl
,
2188 unsigned int *outlen
,
2189 void *arg
), void *arg
)
2191 ctx
->next_protos_advertised_cb
= cb
;
2192 ctx
->next_protos_advertised_cb_arg
= arg
;
2196 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2197 * client needs to select a protocol from the server's provided list. |out|
2198 * must be set to point to the selected protocol (which may be within |in|).
2199 * The length of the protocol name must be written into |outlen|. The
2200 * server's advertised protocols are provided in |in| and |inlen|. The
2201 * callback can assume that |in| is syntactically valid. The client must
2202 * select a protocol. It is fatal to the connection if this callback returns
2203 * a value other than SSL_TLSEXT_ERR_OK.
2205 void SSL_CTX_set_next_proto_select_cb(SSL_CTX
*ctx
,
2206 int (*cb
) (SSL
*s
, unsigned char **out
,
2207 unsigned char *outlen
,
2208 const unsigned char *in
,
2210 void *arg
), void *arg
)
2212 ctx
->next_proto_select_cb
= cb
;
2213 ctx
->next_proto_select_cb_arg
= arg
;
2218 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2219 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2220 * length-prefixed strings). Returns 0 on success.
2222 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2223 unsigned int protos_len
)
2225 OPENSSL_free(ctx
->alpn_client_proto_list
);
2226 ctx
->alpn_client_proto_list
= OPENSSL_memdup(protos
, protos_len
);
2227 if (ctx
->alpn_client_proto_list
== NULL
) {
2228 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2231 ctx
->alpn_client_proto_list_len
= protos_len
;
2237 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2238 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2239 * length-prefixed strings). Returns 0 on success.
2241 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2242 unsigned int protos_len
)
2244 OPENSSL_free(ssl
->alpn_client_proto_list
);
2245 ssl
->alpn_client_proto_list
= OPENSSL_memdup(protos
, protos_len
);
2246 if (ssl
->alpn_client_proto_list
== NULL
) {
2247 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2250 ssl
->alpn_client_proto_list_len
= protos_len
;
2256 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2257 * called during ClientHello processing in order to select an ALPN protocol
2258 * from the client's list of offered protocols.
2260 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2261 int (*cb
) (SSL
*ssl
,
2262 const unsigned char **out
,
2263 unsigned char *outlen
,
2264 const unsigned char *in
,
2266 void *arg
), void *arg
)
2268 ctx
->alpn_select_cb
= cb
;
2269 ctx
->alpn_select_cb_arg
= arg
;
2273 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2274 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2275 * (not including the leading length-prefix byte). If the server didn't
2276 * respond with a negotiated protocol then |*len| will be zero.
2278 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2283 *data
= ssl
->s3
->alpn_selected
;
2287 *len
= ssl
->s3
->alpn_selected_len
;
2291 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2292 const char *label
, size_t llen
,
2293 const unsigned char *p
, size_t plen
,
2296 if (s
->version
< TLS1_VERSION
)
2299 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2304 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2309 ((unsigned int)a
->session_id
[0]) |
2310 ((unsigned int)a
->session_id
[1] << 8L) |
2311 ((unsigned long)a
->session_id
[2] << 16L) |
2312 ((unsigned long)a
->session_id
[3] << 24L);
2317 * NB: If this function (or indeed the hash function which uses a sort of
2318 * coarser function than this one) is changed, ensure
2319 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2320 * being able to construct an SSL_SESSION that will collide with any existing
2321 * session with a matching session ID.
2323 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2325 if (a
->ssl_version
!= b
->ssl_version
)
2327 if (a
->session_id_length
!= b
->session_id_length
)
2329 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2333 * These wrapper functions should remain rather than redeclaring
2334 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2335 * variable. The reason is that the functions aren't static, they're exposed
2339 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2341 SSL_CTX
*ret
= NULL
;
2344 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2348 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2351 if (FIPS_mode() && (meth
->version
< TLS1_VERSION
)) {
2352 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE
);
2356 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2357 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2360 ret
= OPENSSL_zalloc(sizeof(*ret
));
2365 ret
->min_proto_version
= 0;
2366 ret
->max_proto_version
= 0;
2367 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2368 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2369 /* We take the system default. */
2370 ret
->session_timeout
= meth
->get_timeout();
2371 ret
->references
= 1;
2372 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2373 ret
->verify_mode
= SSL_VERIFY_NONE
;
2374 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2377 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2378 if (ret
->sessions
== NULL
)
2380 ret
->cert_store
= X509_STORE_new();
2381 if (ret
->cert_store
== NULL
)
2383 #ifndef OPENSSL_NO_CT
2384 ret
->ctlog_store
= CTLOG_STORE_new();
2385 if (ret
->ctlog_store
== NULL
)
2388 if (!ssl_create_cipher_list(ret
->method
,
2389 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2390 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2391 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2392 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2396 ret
->param
= X509_VERIFY_PARAM_new();
2397 if (ret
->param
== NULL
)
2400 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2401 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2404 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2405 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2409 if ((ret
->client_CA
= sk_X509_NAME_new_null()) == NULL
)
2412 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
);
2414 /* No compression for DTLS */
2415 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2416 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2418 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2419 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2421 /* Setup RFC4507 ticket keys */
2422 if ((RAND_bytes(ret
->tlsext_tick_key_name
, 16) <= 0)
2423 || (RAND_bytes(ret
->tlsext_tick_hmac_key
, 16) <= 0)
2424 || (RAND_bytes(ret
->tlsext_tick_aes_key
, 16) <= 0))
2425 ret
->options
|= SSL_OP_NO_TICKET
;
2427 #ifndef OPENSSL_NO_SRP
2428 if (!SSL_CTX_SRP_CTX_init(ret
))
2431 #ifndef OPENSSL_NO_ENGINE
2432 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2433 # define eng_strx(x) #x
2434 # define eng_str(x) eng_strx(x)
2435 /* Use specific client engine automatically... ignore errors */
2438 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2441 ENGINE_load_builtin_engines();
2442 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2444 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2450 * Default is to connect to non-RI servers. When RI is more widely
2451 * deployed might change this.
2453 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2455 * Disable compression by default to prevent CRIME. Applications can
2456 * re-enable compression by configuring
2457 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2458 * or by using the SSL_CONF library.
2460 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2464 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2470 void SSL_CTX_up_ref(SSL_CTX
*ctx
)
2472 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
2475 void SSL_CTX_free(SSL_CTX
*a
)
2482 i
= CRYPTO_add(&a
->references
, -1, CRYPTO_LOCK_SSL_CTX
);
2483 REF_PRINT_COUNT("SSL_CTX", a
);
2486 REF_ASSERT_ISNT(i
< 0);
2488 X509_VERIFY_PARAM_free(a
->param
);
2489 dane_ctx_final(&a
->dane
);
2492 * Free internal session cache. However: the remove_cb() may reference
2493 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2494 * after the sessions were flushed.
2495 * As the ex_data handling routines might also touch the session cache,
2496 * the most secure solution seems to be: empty (flush) the cache, then
2497 * free ex_data, then finally free the cache.
2498 * (See ticket [openssl.org #212].)
2500 if (a
->sessions
!= NULL
)
2501 SSL_CTX_flush_sessions(a
, 0);
2503 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2504 lh_SSL_SESSION_free(a
->sessions
);
2505 X509_STORE_free(a
->cert_store
);
2506 #ifndef OPENSSL_NO_CT
2507 CTLOG_STORE_free(a
->ctlog_store
);
2509 sk_SSL_CIPHER_free(a
->cipher_list
);
2510 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2511 ssl_cert_free(a
->cert
);
2512 sk_X509_NAME_pop_free(a
->client_CA
, X509_NAME_free
);
2513 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2514 a
->comp_methods
= NULL
;
2515 #ifndef OPENSSL_NO_SRTP
2516 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2518 #ifndef OPENSSL_NO_SRP
2519 SSL_CTX_SRP_CTX_free(a
);
2521 #ifndef OPENSSL_NO_ENGINE
2522 ENGINE_finish(a
->client_cert_engine
);
2525 #ifndef OPENSSL_NO_EC
2526 OPENSSL_free(a
->tlsext_ecpointformatlist
);
2527 OPENSSL_free(a
->tlsext_ellipticcurvelist
);
2529 OPENSSL_free(a
->alpn_client_proto_list
);
2534 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2536 ctx
->default_passwd_callback
= cb
;
2539 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2541 ctx
->default_passwd_callback_userdata
= u
;
2544 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2546 return ctx
->default_passwd_callback
;
2549 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2551 return ctx
->default_passwd_callback_userdata
;
2554 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2556 s
->default_passwd_callback
= cb
;
2559 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2561 s
->default_passwd_callback_userdata
= u
;
2564 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2566 return s
->default_passwd_callback
;
2569 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2571 return s
->default_passwd_callback_userdata
;
2574 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2575 int (*cb
) (X509_STORE_CTX
*, void *),
2578 ctx
->app_verify_callback
= cb
;
2579 ctx
->app_verify_arg
= arg
;
2582 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2583 int (*cb
) (int, X509_STORE_CTX
*))
2585 ctx
->verify_mode
= mode
;
2586 ctx
->default_verify_callback
= cb
;
2589 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2591 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2594 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
),
2597 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2600 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2602 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2605 void ssl_set_masks(SSL
*s
)
2607 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2611 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2612 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2613 unsigned long mask_k
, mask_a
;
2614 #ifndef OPENSSL_NO_EC
2615 int have_ecc_cert
, ecdsa_ok
;
2621 #ifndef OPENSSL_NO_DH
2622 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2627 rsa_enc
= pvalid
[SSL_PKEY_RSA_ENC
] & CERT_PKEY_VALID
;
2628 rsa_sign
= pvalid
[SSL_PKEY_RSA_SIGN
] & CERT_PKEY_SIGN
;
2629 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_SIGN
;
2630 #ifndef OPENSSL_NO_EC
2631 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2637 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2638 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2641 #ifndef OPENSSL_NO_GOST
2642 cpk
= &(c
->pkeys
[SSL_PKEY_GOST12_512
]);
2643 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2644 mask_k
|= SSL_kGOST
;
2645 mask_a
|= SSL_aGOST12
;
2647 cpk
= &(c
->pkeys
[SSL_PKEY_GOST12_256
]);
2648 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2649 mask_k
|= SSL_kGOST
;
2650 mask_a
|= SSL_aGOST12
;
2652 cpk
= &(c
->pkeys
[SSL_PKEY_GOST01
]);
2653 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2654 mask_k
|= SSL_kGOST
;
2655 mask_a
|= SSL_aGOST01
;
2665 if (rsa_enc
|| rsa_sign
) {
2673 mask_a
|= SSL_aNULL
;
2676 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2677 * depending on the key usage extension.
2679 #ifndef OPENSSL_NO_EC
2680 if (have_ecc_cert
) {
2682 cpk
= &c
->pkeys
[SSL_PKEY_ECC
];
2684 ex_kusage
= X509_get_key_usage(x
);
2685 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2686 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2689 mask_a
|= SSL_aECDSA
;
2693 #ifndef OPENSSL_NO_EC
2694 mask_k
|= SSL_kECDHE
;
2697 #ifndef OPENSSL_NO_PSK
2700 if (mask_k
& SSL_kRSA
)
2701 mask_k
|= SSL_kRSAPSK
;
2702 if (mask_k
& SSL_kDHE
)
2703 mask_k
|= SSL_kDHEPSK
;
2704 if (mask_k
& SSL_kECDHE
)
2705 mask_k
|= SSL_kECDHEPSK
;
2708 s
->s3
->tmp
.mask_k
= mask_k
;
2709 s
->s3
->tmp
.mask_a
= mask_a
;
2712 #ifndef OPENSSL_NO_EC
2714 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
2716 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
2717 /* key usage, if present, must allow signing */
2718 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
2719 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
2720 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
2724 return 1; /* all checks are ok */
2729 static int ssl_get_server_cert_index(const SSL
*s
)
2732 idx
= ssl_cipher_get_cert_index(s
->s3
->tmp
.new_cipher
);
2733 if (idx
== SSL_PKEY_RSA_ENC
&& !s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
)
2734 idx
= SSL_PKEY_RSA_SIGN
;
2735 if (idx
== SSL_PKEY_GOST_EC
) {
2736 if (s
->cert
->pkeys
[SSL_PKEY_GOST12_512
].x509
)
2737 idx
= SSL_PKEY_GOST12_512
;
2738 else if (s
->cert
->pkeys
[SSL_PKEY_GOST12_256
].x509
)
2739 idx
= SSL_PKEY_GOST12_256
;
2740 else if (s
->cert
->pkeys
[SSL_PKEY_GOST01
].x509
)
2741 idx
= SSL_PKEY_GOST01
;
2746 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX
, ERR_R_INTERNAL_ERROR
);
2750 CERT_PKEY
*ssl_get_server_send_pkey(SSL
*s
)
2756 if (!s
->s3
|| !s
->s3
->tmp
.new_cipher
)
2760 i
= ssl_get_server_cert_index(s
);
2762 /* This may or may not be an error. */
2767 return &c
->pkeys
[i
];
2770 EVP_PKEY
*ssl_get_sign_pkey(SSL
*s
, const SSL_CIPHER
*cipher
,
2773 unsigned long alg_a
;
2777 alg_a
= cipher
->algorithm_auth
;
2780 if ((alg_a
& SSL_aDSS
) &&
2781 (c
->pkeys
[SSL_PKEY_DSA_SIGN
].privatekey
!= NULL
))
2782 idx
= SSL_PKEY_DSA_SIGN
;
2783 else if (alg_a
& SSL_aRSA
) {
2784 if (c
->pkeys
[SSL_PKEY_RSA_SIGN
].privatekey
!= NULL
)
2785 idx
= SSL_PKEY_RSA_SIGN
;
2786 else if (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
!= NULL
)
2787 idx
= SSL_PKEY_RSA_ENC
;
2788 } else if ((alg_a
& SSL_aECDSA
) &&
2789 (c
->pkeys
[SSL_PKEY_ECC
].privatekey
!= NULL
))
2792 SSLerr(SSL_F_SSL_GET_SIGN_PKEY
, ERR_R_INTERNAL_ERROR
);
2796 *pmd
= s
->s3
->tmp
.md
[idx
];
2797 return c
->pkeys
[idx
].privatekey
;
2800 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
2801 size_t *serverinfo_length
)
2805 *serverinfo_length
= 0;
2808 i
= ssl_get_server_cert_index(s
);
2812 if (c
->pkeys
[i
].serverinfo
== NULL
)
2815 *serverinfo
= c
->pkeys
[i
].serverinfo
;
2816 *serverinfo_length
= c
->pkeys
[i
].serverinfo_length
;
2820 void ssl_update_cache(SSL
*s
, int mode
)
2825 * If the session_id_length is 0, we are not supposed to cache it, and it
2826 * would be rather hard to do anyway :-)
2828 if (s
->session
->session_id_length
== 0)
2831 i
= s
->session_ctx
->session_cache_mode
;
2832 if ((i
& mode
) && (!s
->hit
)
2833 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
2834 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
2835 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
2836 CRYPTO_add(&s
->session
->references
, 1, CRYPTO_LOCK_SSL_SESSION
);
2837 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
2838 SSL_SESSION_free(s
->session
);
2841 /* auto flush every 255 connections */
2842 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
2843 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
2844 ? s
->session_ctx
->stats
.sess_connect_good
2845 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
2846 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
2851 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
2856 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
2861 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
2865 if (s
->method
!= meth
) {
2866 const SSL_METHOD
*sm
= s
->method
;
2867 int (*hf
)(SSL
*) = s
->handshake_func
;
2869 if (sm
->version
== meth
->version
)
2874 ret
= s
->method
->ssl_new(s
);
2877 if (hf
== sm
->ssl_connect
)
2878 s
->handshake_func
= meth
->ssl_connect
;
2879 else if (hf
== sm
->ssl_accept
)
2880 s
->handshake_func
= meth
->ssl_accept
;
2885 int SSL_get_error(const SSL
*s
, int i
)
2892 return (SSL_ERROR_NONE
);
2895 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2896 * where we do encode the error
2898 if ((l
= ERR_peek_error()) != 0) {
2899 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
2900 return (SSL_ERROR_SYSCALL
);
2902 return (SSL_ERROR_SSL
);
2905 if ((i
< 0) && SSL_want_read(s
)) {
2906 bio
= SSL_get_rbio(s
);
2907 if (BIO_should_read(bio
))
2908 return (SSL_ERROR_WANT_READ
);
2909 else if (BIO_should_write(bio
))
2911 * This one doesn't make too much sense ... We never try to write
2912 * to the rbio, and an application program where rbio and wbio
2913 * are separate couldn't even know what it should wait for.
2914 * However if we ever set s->rwstate incorrectly (so that we have
2915 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2916 * wbio *are* the same, this test works around that bug; so it
2917 * might be safer to keep it.
2919 return (SSL_ERROR_WANT_WRITE
);
2920 else if (BIO_should_io_special(bio
)) {
2921 reason
= BIO_get_retry_reason(bio
);
2922 if (reason
== BIO_RR_CONNECT
)
2923 return (SSL_ERROR_WANT_CONNECT
);
2924 else if (reason
== BIO_RR_ACCEPT
)
2925 return (SSL_ERROR_WANT_ACCEPT
);
2927 return (SSL_ERROR_SYSCALL
); /* unknown */
2931 if ((i
< 0) && SSL_want_write(s
)) {
2932 bio
= SSL_get_wbio(s
);
2933 if (BIO_should_write(bio
))
2934 return (SSL_ERROR_WANT_WRITE
);
2935 else if (BIO_should_read(bio
))
2937 * See above (SSL_want_read(s) with BIO_should_write(bio))
2939 return (SSL_ERROR_WANT_READ
);
2940 else if (BIO_should_io_special(bio
)) {
2941 reason
= BIO_get_retry_reason(bio
);
2942 if (reason
== BIO_RR_CONNECT
)
2943 return (SSL_ERROR_WANT_CONNECT
);
2944 else if (reason
== BIO_RR_ACCEPT
)
2945 return (SSL_ERROR_WANT_ACCEPT
);
2947 return (SSL_ERROR_SYSCALL
);
2950 if ((i
< 0) && SSL_want_x509_lookup(s
)) {
2951 return (SSL_ERROR_WANT_X509_LOOKUP
);
2953 if ((i
< 0) && SSL_want_async(s
)) {
2954 return SSL_ERROR_WANT_ASYNC
;
2958 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
2959 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
2960 return (SSL_ERROR_ZERO_RETURN
);
2962 return (SSL_ERROR_SYSCALL
);
2965 static int ssl_do_handshake_intern(void *vargs
)
2967 struct ssl_async_args
*args
;
2970 args
= (struct ssl_async_args
*)vargs
;
2973 return s
->handshake_func(s
);
2976 int SSL_do_handshake(SSL
*s
)
2980 if (s
->handshake_func
== NULL
) {
2981 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
2985 s
->method
->ssl_renegotiate_check(s
);
2987 if (SSL_in_init(s
) || SSL_in_before(s
)) {
2988 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2989 struct ssl_async_args args
;
2993 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
2995 ret
= s
->handshake_func(s
);
3001 void SSL_set_accept_state(SSL
*s
)
3005 ossl_statem_clear(s
);
3006 s
->handshake_func
= s
->method
->ssl_accept
;
3010 void SSL_set_connect_state(SSL
*s
)
3014 ossl_statem_clear(s
);
3015 s
->handshake_func
= s
->method
->ssl_connect
;
3019 int ssl_undefined_function(SSL
*s
)
3021 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3025 int ssl_undefined_void_function(void)
3027 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3028 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3032 int ssl_undefined_const_function(const SSL
*s
)
3037 SSL_METHOD
*ssl_bad_method(int ver
)
3039 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3043 const char *SSL_get_version(const SSL
*s
)
3045 if (s
->version
== TLS1_2_VERSION
)
3047 else if (s
->version
== TLS1_1_VERSION
)
3049 else if (s
->version
== TLS1_VERSION
)
3051 else if (s
->version
== SSL3_VERSION
)
3053 else if (s
->version
== DTLS1_BAD_VER
)
3054 return ("DTLSv0.9");
3055 else if (s
->version
== DTLS1_VERSION
)
3057 else if (s
->version
== DTLS1_2_VERSION
)
3058 return ("DTLSv1.2");
3063 SSL
*SSL_dup(SSL
*s
)
3065 STACK_OF(X509_NAME
) *sk
;
3070 /* If we're not quiescent, just up_ref! */
3071 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3072 CRYPTO_add(&s
->references
, 1, CRYPTO_LOCK_SSL
);
3077 * Otherwise, copy configuration state, and session if set.
3079 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3082 if (s
->session
!= NULL
) {
3084 * Arranges to share the same session via up_ref. This "copies"
3085 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3087 if (!SSL_copy_session_id(ret
, s
))
3091 * No session has been established yet, so we have to expect that
3092 * s->cert or ret->cert will be changed later -- they should not both
3093 * point to the same object, and thus we can't use
3094 * SSL_copy_session_id.
3096 if (!SSL_set_ssl_method(ret
, s
->method
))
3099 if (s
->cert
!= NULL
) {
3100 ssl_cert_free(ret
->cert
);
3101 ret
->cert
= ssl_cert_dup(s
->cert
);
3102 if (ret
->cert
== NULL
)
3106 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
, s
->sid_ctx_length
))
3110 ssl_dane_dup(ret
, s
);
3111 ret
->version
= s
->version
;
3112 ret
->options
= s
->options
;
3113 ret
->mode
= s
->mode
;
3114 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3115 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3116 ret
->msg_callback
= s
->msg_callback
;
3117 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3118 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3119 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3120 ret
->generate_session_id
= s
->generate_session_id
;
3122 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3124 /* copy app data, a little dangerous perhaps */
3125 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3128 /* setup rbio, and wbio */
3129 if (s
->rbio
!= NULL
) {
3130 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3133 if (s
->wbio
!= NULL
) {
3134 if (s
->wbio
!= s
->rbio
) {
3135 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3138 ret
->wbio
= ret
->rbio
;
3141 ret
->server
= s
->server
;
3142 if (s
->handshake_func
) {
3144 SSL_set_accept_state(ret
);
3146 SSL_set_connect_state(ret
);
3148 ret
->shutdown
= s
->shutdown
;
3151 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3152 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3154 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3156 /* dup the cipher_list and cipher_list_by_id stacks */
3157 if (s
->cipher_list
!= NULL
) {
3158 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3161 if (s
->cipher_list_by_id
!= NULL
)
3162 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3166 /* Dup the client_CA list */
3167 if (s
->client_CA
!= NULL
) {
3168 if ((sk
= sk_X509_NAME_dup(s
->client_CA
)) == NULL
)
3170 ret
->client_CA
= sk
;
3171 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3172 xn
= sk_X509_NAME_value(sk
, i
);
3173 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3186 void ssl_clear_cipher_ctx(SSL
*s
)
3188 if (s
->enc_read_ctx
!= NULL
) {
3189 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3190 s
->enc_read_ctx
= NULL
;
3192 if (s
->enc_write_ctx
!= NULL
) {
3193 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3194 s
->enc_write_ctx
= NULL
;
3196 #ifndef OPENSSL_NO_COMP
3197 COMP_CTX_free(s
->expand
);
3199 COMP_CTX_free(s
->compress
);
3204 X509
*SSL_get_certificate(const SSL
*s
)
3206 if (s
->cert
!= NULL
)
3207 return (s
->cert
->key
->x509
);
3212 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3214 if (s
->cert
!= NULL
)
3215 return (s
->cert
->key
->privatekey
);
3220 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3222 if (ctx
->cert
!= NULL
)
3223 return ctx
->cert
->key
->x509
;
3228 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3230 if (ctx
->cert
!= NULL
)
3231 return ctx
->cert
->key
->privatekey
;
3236 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3238 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3239 return (s
->session
->cipher
);
3243 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3245 #ifndef OPENSSL_NO_COMP
3246 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3252 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3254 #ifndef OPENSSL_NO_COMP
3255 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3261 int ssl_init_wbio_buffer(SSL
*s
, int push
)
3265 if (s
->bbio
== NULL
) {
3266 bbio
= BIO_new(BIO_f_buffer());
3272 if (s
->bbio
== s
->wbio
)
3273 s
->wbio
= BIO_pop(s
->wbio
);
3275 (void)BIO_reset(bbio
);
3276 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3277 if (!BIO_set_read_buffer_size(bbio
, 1)) {
3278 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3282 if (s
->wbio
!= bbio
)
3283 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3285 if (s
->wbio
== bbio
)
3286 s
->wbio
= BIO_pop(bbio
);
3291 void ssl_free_wbio_buffer(SSL
*s
)
3293 /* callers ensure s is never null */
3294 if (s
->bbio
== NULL
)
3297 if (s
->bbio
== s
->wbio
) {
3298 /* remove buffering */
3299 s
->wbio
= BIO_pop(s
->wbio
);
3302 * not the usual REF_DEBUG, but this avoids
3303 * adding one more preprocessor symbol
3305 assert(s
->wbio
!= NULL
);
3312 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3314 ctx
->quiet_shutdown
= mode
;
3317 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3319 return (ctx
->quiet_shutdown
);
3322 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3324 s
->quiet_shutdown
= mode
;
3327 int SSL_get_quiet_shutdown(const SSL
*s
)
3329 return (s
->quiet_shutdown
);
3332 void SSL_set_shutdown(SSL
*s
, int mode
)
3337 int SSL_get_shutdown(const SSL
*s
)
3339 return (s
->shutdown
);
3342 int SSL_version(const SSL
*s
)
3344 return (s
->version
);
3347 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3352 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3355 if (ssl
->ctx
== ctx
)
3358 ctx
= ssl
->initial_ctx
;
3359 new_cert
= ssl_cert_dup(ctx
->cert
);
3360 if (new_cert
== NULL
) {
3363 ssl_cert_free(ssl
->cert
);
3364 ssl
->cert
= new_cert
;
3367 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3368 * so setter APIs must prevent invalid lengths from entering the system.
3370 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3373 * If the session ID context matches that of the parent SSL_CTX,
3374 * inherit it from the new SSL_CTX as well. If however the context does
3375 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3376 * leave it unchanged.
3378 if ((ssl
->ctx
!= NULL
) &&
3379 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3380 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3381 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3382 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3385 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
3386 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3392 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3394 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3397 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3399 X509_LOOKUP
*lookup
;
3401 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3404 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3406 /* Clear any errors if the default directory does not exist */
3412 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3414 X509_LOOKUP
*lookup
;
3416 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3420 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3422 /* Clear any errors if the default file does not exist */
3428 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3431 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3434 void SSL_set_info_callback(SSL
*ssl
,
3435 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3437 ssl
->info_callback
= cb
;
3441 * One compiler (Diab DCC) doesn't like argument names in returned function
3444 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3447 return ssl
->info_callback
;
3450 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3452 ssl
->verify_result
= arg
;
3455 long SSL_get_verify_result(const SSL
*ssl
)
3457 return (ssl
->verify_result
);
3460 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3463 return sizeof(ssl
->s3
->client_random
);
3464 if (outlen
> sizeof(ssl
->s3
->client_random
))
3465 outlen
= sizeof(ssl
->s3
->client_random
);
3466 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3470 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3473 return sizeof(ssl
->s3
->server_random
);
3474 if (outlen
> sizeof(ssl
->s3
->server_random
))
3475 outlen
= sizeof(ssl
->s3
->server_random
);
3476 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3480 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3481 unsigned char *out
, size_t outlen
)
3483 if (session
->master_key_length
< 0) {
3484 /* Should never happen */
3488 return session
->master_key_length
;
3489 if (outlen
> (size_t)session
->master_key_length
)
3490 outlen
= session
->master_key_length
;
3491 memcpy(out
, session
->master_key
, outlen
);
3495 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3497 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3500 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3502 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3505 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3507 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3510 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3512 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3520 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3522 return (ctx
->cert_store
);
3525 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3527 X509_STORE_free(ctx
->cert_store
);
3528 ctx
->cert_store
= store
;
3531 int SSL_want(const SSL
*s
)
3533 return (s
->rwstate
);
3537 * \brief Set the callback for generating temporary DH keys.
3538 * \param ctx the SSL context.
3539 * \param dh the callback
3542 #ifndef OPENSSL_NO_DH
3543 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3544 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3547 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3550 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3553 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3557 #ifndef OPENSSL_NO_PSK
3558 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3560 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3561 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
,
3562 SSL_R_DATA_LENGTH_TOO_LONG
);
3565 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3566 if (identity_hint
!= NULL
) {
3567 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3568 if (ctx
->cert
->psk_identity_hint
== NULL
)
3571 ctx
->cert
->psk_identity_hint
= NULL
;
3575 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3580 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3581 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3584 OPENSSL_free(s
->cert
->psk_identity_hint
);
3585 if (identity_hint
!= NULL
) {
3586 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3587 if (s
->cert
->psk_identity_hint
== NULL
)
3590 s
->cert
->psk_identity_hint
= NULL
;
3594 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3596 if (s
== NULL
|| s
->session
== NULL
)
3598 return (s
->session
->psk_identity_hint
);
3601 const char *SSL_get_psk_identity(const SSL
*s
)
3603 if (s
== NULL
|| s
->session
== NULL
)
3605 return (s
->session
->psk_identity
);
3608 void SSL_set_psk_client_callback(SSL
*s
,
3609 unsigned int (*cb
) (SSL
*ssl
,
3618 s
->psk_client_callback
= cb
;
3621 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
,
3622 unsigned int (*cb
) (SSL
*ssl
,
3631 ctx
->psk_client_callback
= cb
;
3634 void SSL_set_psk_server_callback(SSL
*s
,
3635 unsigned int (*cb
) (SSL
*ssl
,
3636 const char *identity
,
3641 s
->psk_server_callback
= cb
;
3644 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
,
3645 unsigned int (*cb
) (SSL
*ssl
,
3646 const char *identity
,
3651 ctx
->psk_server_callback
= cb
;
3655 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3656 void (*cb
) (int write_p
, int version
,
3657 int content_type
, const void *buf
,
3658 size_t len
, SSL
*ssl
, void *arg
))
3660 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3663 void SSL_set_msg_callback(SSL
*ssl
,
3664 void (*cb
) (int write_p
, int version
,
3665 int content_type
, const void *buf
,
3666 size_t len
, SSL
*ssl
, void *arg
))
3668 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3671 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3672 int (*cb
) (SSL
*ssl
,
3676 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3677 (void (*)(void))cb
);
3680 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3681 int (*cb
) (SSL
*ssl
,
3682 int is_forward_secure
))
3684 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3685 (void (*)(void))cb
);
3689 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3690 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3691 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3695 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3697 ssl_clear_hash_ctx(hash
);
3698 *hash
= EVP_MD_CTX_new();
3699 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3700 EVP_MD_CTX_free(*hash
);
3707 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3711 EVP_MD_CTX_free(*hash
);
3715 /* Retrieve handshake hashes */
3716 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, int outlen
)
3718 EVP_MD_CTX
*ctx
= NULL
;
3719 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3720 int ret
= EVP_MD_CTX_size(hdgst
);
3721 if (ret
< 0 || ret
> outlen
) {
3725 ctx
= EVP_MD_CTX_new();
3730 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3731 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3734 EVP_MD_CTX_free(ctx
);
3738 int SSL_session_reused(SSL
*s
)
3743 int SSL_is_server(SSL
*s
)
3748 #if OPENSSL_API_COMPAT < 0x10100000L
3749 void SSL_set_debug(SSL
*s
, int debug
)
3751 /* Old function was do-nothing anyway... */
3758 void SSL_set_security_level(SSL
*s
, int level
)
3760 s
->cert
->sec_level
= level
;
3763 int SSL_get_security_level(const SSL
*s
)
3765 return s
->cert
->sec_level
;
3768 void SSL_set_security_callback(SSL
*s
,
3769 int (*cb
) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3770 int bits
, int nid
, void *other
,
3773 s
->cert
->sec_cb
= cb
;
3776 int (*SSL_get_security_callback(const SSL
*s
)) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3778 void *other
, void *ex
) {
3779 return s
->cert
->sec_cb
;
3782 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
3784 s
->cert
->sec_ex
= ex
;
3787 void *SSL_get0_security_ex_data(const SSL
*s
)
3789 return s
->cert
->sec_ex
;
3792 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
3794 ctx
->cert
->sec_level
= level
;
3797 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
3799 return ctx
->cert
->sec_level
;
3802 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
3803 int (*cb
) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3804 int bits
, int nid
, void *other
,
3807 ctx
->cert
->sec_cb
= cb
;
3810 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (SSL
*s
,
3816 return ctx
->cert
->sec_cb
;
3819 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
3821 ctx
->cert
->sec_ex
= ex
;
3824 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
3826 return ctx
->cert
->sec_ex
;
3831 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3832 * can return unsigned long, instead of the generic long return value from the
3833 * control interface.
3835 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
3837 return ctx
->options
;
3839 unsigned long SSL_get_options(const SSL
* s
)
3843 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
3845 return ctx
->options
|= op
;
3847 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
3849 return s
->options
|= op
;
3851 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
3853 return ctx
->options
&= ~op
;
3855 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
3857 return s
->options
&= ~op
;
3860 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
3862 return s
->verified_chain
;
3865 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
3867 #ifndef OPENSSL_NO_CT
3870 * Moves SCTs from the |src| stack to the |dst| stack.
3871 * The source of each SCT will be set to |origin|.
3872 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3874 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3876 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
, sct_source_t origin
)
3882 *dst
= sk_SCT_new_null();
3884 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
3889 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
3890 if (SCT_set_source(sct
, origin
) != 1)
3893 if (sk_SCT_push(*dst
, sct
) <= 0)
3901 sk_SCT_push(src
, sct
); /* Put the SCT back */
3906 * Look for data collected during ServerHello and parse if found.
3907 * Return 1 on success, 0 on failure.
3909 static int ct_extract_tls_extension_scts(SSL
*s
)
3911 int scts_extracted
= 0;
3913 if (s
->tlsext_scts
!= NULL
) {
3914 const unsigned char *p
= s
->tlsext_scts
;
3915 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->tlsext_scts_len
);
3917 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
3919 SCT_LIST_free(scts
);
3922 return scts_extracted
;
3926 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3927 * contains an SCT X509 extension. They will be stored in |s->scts|.
3929 * - The number of SCTs extracted, assuming an OCSP response exists.
3930 * - 0 if no OCSP response exists or it contains no SCTs.
3931 * - A negative integer if an error occurs.
3933 static int ct_extract_ocsp_response_scts(SSL
*s
)
3935 int scts_extracted
= 0;
3936 const unsigned char *p
;
3937 OCSP_BASICRESP
*br
= NULL
;
3938 OCSP_RESPONSE
*rsp
= NULL
;
3939 STACK_OF(SCT
) *scts
= NULL
;
3942 if (s
->tlsext_ocsp_resp
== NULL
|| s
->tlsext_ocsp_resplen
== 0)
3945 p
= s
->tlsext_ocsp_resp
;
3946 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, s
->tlsext_ocsp_resplen
);
3950 br
= OCSP_response_get1_basic(rsp
);
3954 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
3955 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
3960 scts
= OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
3961 scts_extracted
= ct_move_scts(&s
->scts
, scts
,
3962 SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
3963 if (scts_extracted
< 0)
3967 SCT_LIST_free(scts
);
3968 OCSP_BASICRESP_free(br
);
3969 OCSP_RESPONSE_free(rsp
);
3970 return scts_extracted
;
3974 * Attempts to extract SCTs from the peer certificate.
3975 * Return the number of SCTs extracted, or a negative integer if an error
3978 static int ct_extract_x509v3_extension_scts(SSL
*s
)
3980 int scts_extracted
= 0;
3981 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
3984 STACK_OF(SCT
) *scts
=
3985 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
3988 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
3990 SCT_LIST_free(scts
);
3993 return scts_extracted
;
3997 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3998 * response (if it exists) and X509v3 extensions in the certificate.
3999 * Returns NULL if an error occurs.
4001 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4003 if (!s
->scts_parsed
) {
4004 if (ct_extract_tls_extension_scts(s
) < 0 ||
4005 ct_extract_ocsp_response_scts(s
) < 0 ||
4006 ct_extract_x509v3_extension_scts(s
) < 0)
4016 int SSL_set_ct_validation_callback(SSL
*s
, ct_validation_cb callback
, void *arg
)
4021 * Since code exists that uses the custom extension handler for CT, look
4022 * for this and throw an error if they have already registered to use CT.
4024 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4025 TLSEXT_TYPE_signed_certificate_timestamp
)) {
4026 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4027 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4031 s
->ct_validation_callback
= callback
;
4032 s
->ct_validation_callback_arg
= arg
;
4034 if (callback
!= NULL
) {
4035 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4036 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4045 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
, ct_validation_cb callback
,
4051 * Since code exists that uses the custom extension handler for CT, look for
4052 * this and throw an error if they have already registered to use CT.
4054 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4055 TLSEXT_TYPE_signed_certificate_timestamp
)) {
4056 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4057 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4061 ctx
->ct_validation_callback
= callback
;
4062 ctx
->ct_validation_callback_arg
= arg
;
4068 ct_validation_cb
SSL_get_ct_validation_callback(const SSL
*s
)
4070 return s
->ct_validation_callback
;
4073 ct_validation_cb
SSL_CTX_get_ct_validation_callback(const SSL_CTX
*ctx
)
4075 return ctx
->ct_validation_callback
;
4078 int ssl_validate_ct(SSL
*s
)
4081 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4082 X509
*issuer
= NULL
;
4083 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4084 const STACK_OF(SCT
) *scts
;
4086 /* If no callback is set, attempt no validation - just return success */
4087 if (s
->ct_validation_callback
== NULL
)
4091 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
4095 if (s
->verified_chain
!= NULL
&& sk_X509_num(s
->verified_chain
) > 1)
4096 issuer
= sk_X509_value(s
->verified_chain
, 1);
4098 ctx
= CT_POLICY_EVAL_CTX_new();
4100 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4104 CT_POLICY_EVAL_CTX_set0_cert(ctx
, cert
);
4105 CT_POLICY_EVAL_CTX_set0_issuer(ctx
, issuer
);
4106 CT_POLICY_EVAL_CTX_set0_log_store(ctx
, s
->ctx
->ctlog_store
);
4108 scts
= SSL_get0_peer_scts(s
);
4110 if (SCT_LIST_validate(scts
, ctx
) != 1) {
4111 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4115 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4117 ret
= 0; /* This function returns 0 on failure */
4120 CT_POLICY_EVAL_CTX_free(ctx
);
4124 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4126 int ret
= CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4128 /* Clear any errors if the default file does not exist */
4133 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4135 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);