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
*, int))ssl_undefined_function
,
174 (int (*)(SSL
*, 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
;
674 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
676 s
->tlsext_debug_cb
= 0;
677 s
->tlsext_debug_arg
= NULL
;
678 s
->tlsext_ticket_expected
= 0;
679 s
->tlsext_status_type
= -1;
680 s
->tlsext_status_expected
= 0;
681 s
->tlsext_ocsp_ids
= NULL
;
682 s
->tlsext_ocsp_exts
= NULL
;
683 s
->tlsext_ocsp_resp
= NULL
;
684 s
->tlsext_ocsp_resplen
= -1;
685 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
686 s
->initial_ctx
= ctx
;
687 # ifndef OPENSSL_NO_EC
688 if (ctx
->tlsext_ecpointformatlist
) {
689 s
->tlsext_ecpointformatlist
=
690 OPENSSL_memdup(ctx
->tlsext_ecpointformatlist
,
691 ctx
->tlsext_ecpointformatlist_length
);
692 if (!s
->tlsext_ecpointformatlist
)
694 s
->tlsext_ecpointformatlist_length
=
695 ctx
->tlsext_ecpointformatlist_length
;
697 if (ctx
->tlsext_ellipticcurvelist
) {
698 s
->tlsext_ellipticcurvelist
=
699 OPENSSL_memdup(ctx
->tlsext_ellipticcurvelist
,
700 ctx
->tlsext_ellipticcurvelist_length
);
701 if (!s
->tlsext_ellipticcurvelist
)
703 s
->tlsext_ellipticcurvelist_length
=
704 ctx
->tlsext_ellipticcurvelist_length
;
707 # ifndef OPENSSL_NO_NEXTPROTONEG
708 s
->next_proto_negotiated
= NULL
;
711 if (s
->ctx
->alpn_client_proto_list
) {
712 s
->alpn_client_proto_list
=
713 OPENSSL_malloc(s
->ctx
->alpn_client_proto_list_len
);
714 if (s
->alpn_client_proto_list
== NULL
)
716 memcpy(s
->alpn_client_proto_list
, s
->ctx
->alpn_client_proto_list
,
717 s
->ctx
->alpn_client_proto_list_len
);
718 s
->alpn_client_proto_list_len
= s
->ctx
->alpn_client_proto_list_len
;
721 s
->verified_chain
= NULL
;
722 s
->verify_result
= X509_V_OK
;
724 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
725 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
727 s
->method
= ctx
->method
;
729 if (!s
->method
->ssl_new(s
))
732 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
737 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
739 #ifndef OPENSSL_NO_PSK
740 s
->psk_client_callback
= ctx
->psk_client_callback
;
741 s
->psk_server_callback
= ctx
->psk_server_callback
;
746 #ifndef OPENSSL_NO_CT
747 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
748 ctx
->ct_validation_callback_arg
))
755 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
759 void SSL_up_ref(SSL
*s
)
761 CRYPTO_add(&s
->references
, 1, CRYPTO_LOCK_SSL
);
764 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
765 unsigned int sid_ctx_len
)
767 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
768 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
769 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
772 ctx
->sid_ctx_length
= sid_ctx_len
;
773 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
778 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
779 unsigned int sid_ctx_len
)
781 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
782 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
783 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
786 ssl
->sid_ctx_length
= sid_ctx_len
;
787 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
792 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
794 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
795 ctx
->generate_session_id
= cb
;
796 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
800 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
802 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
803 ssl
->generate_session_id
= cb
;
804 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
808 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
812 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
813 * we can "construct" a session to give us the desired check - ie. to
814 * find if there's a session in the hash table that would conflict with
815 * any new session built out of this id/id_len and the ssl_version in use
820 if (id_len
> sizeof r
.session_id
)
823 r
.ssl_version
= ssl
->version
;
824 r
.session_id_length
= id_len
;
825 memcpy(r
.session_id
, id
, id_len
);
827 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
828 p
= lh_SSL_SESSION_retrieve(ssl
->ctx
->sessions
, &r
);
829 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
833 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
835 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
838 int SSL_set_purpose(SSL
*s
, int purpose
)
840 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
843 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
845 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
848 int SSL_set_trust(SSL
*s
, int trust
)
850 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
853 int SSL_set1_host(SSL
*s
, const char *hostname
)
855 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
858 int SSL_add1_host(SSL
*s
, const char *hostname
)
860 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
863 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
865 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
868 const char *SSL_get0_peername(SSL
*s
)
870 return X509_VERIFY_PARAM_get0_peername(s
->param
);
873 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
875 return dane_ctx_enable(&ctx
->dane
);
878 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
880 struct dane_st
*dane
= &s
->dane
;
882 if (s
->ctx
->dane
.mdmax
== 0) {
883 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
886 if (dane
->trecs
!= NULL
) {
887 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
892 * Default SNI name. This rejects empty names, while set1_host below
893 * accepts them and disables host name checks. To avoid side-effects with
894 * invalid input, set the SNI name first.
896 if (s
->tlsext_hostname
== NULL
) {
897 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
898 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
903 /* Primary RFC6125 reference identifier */
904 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
905 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
911 dane
->dctx
= &s
->ctx
->dane
;
912 dane
->trecs
= sk_danetls_record_new_null();
914 if (dane
->trecs
== NULL
) {
915 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
921 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
923 struct dane_st
*dane
= &s
->dane
;
925 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
929 *mcert
= dane
->mcert
;
931 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
936 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
937 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
939 struct dane_st
*dane
= &s
->dane
;
941 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
945 *usage
= dane
->mtlsa
->usage
;
947 *selector
= dane
->mtlsa
->selector
;
949 *mtype
= dane
->mtlsa
->mtype
;
951 *data
= dane
->mtlsa
->data
;
953 *dlen
= dane
->mtlsa
->dlen
;
958 struct dane_st
*SSL_get0_dane(SSL
*s
)
963 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
964 uint8_t mtype
, unsigned char *data
, size_t dlen
)
966 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
969 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
971 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
974 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
976 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
979 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
981 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
984 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
989 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
994 void SSL_certs_clear(SSL
*s
)
996 ssl_cert_clear_certs(s
->cert
);
999 void SSL_free(SSL
*s
)
1006 i
= CRYPTO_add(&s
->references
, -1, CRYPTO_LOCK_SSL
);
1007 REF_PRINT_COUNT("SSL", s
);
1010 REF_ASSERT_ISNT(i
< 0);
1012 X509_VERIFY_PARAM_free(s
->param
);
1013 dane_final(&s
->dane
);
1014 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1016 if (s
->bbio
!= NULL
) {
1017 /* If the buffering BIO is in place, pop it off */
1018 if (s
->bbio
== s
->wbio
) {
1019 s
->wbio
= BIO_pop(s
->wbio
);
1024 BIO_free_all(s
->rbio
);
1025 if (s
->wbio
!= s
->rbio
)
1026 BIO_free_all(s
->wbio
);
1028 BUF_MEM_free(s
->init_buf
);
1030 /* add extra stuff */
1031 sk_SSL_CIPHER_free(s
->cipher_list
);
1032 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1034 /* Make the next call work :-) */
1035 if (s
->session
!= NULL
) {
1036 ssl_clear_bad_session(s
);
1037 SSL_SESSION_free(s
->session
);
1042 ssl_cert_free(s
->cert
);
1043 /* Free up if allocated */
1045 OPENSSL_free(s
->tlsext_hostname
);
1046 SSL_CTX_free(s
->initial_ctx
);
1047 #ifndef OPENSSL_NO_EC
1048 OPENSSL_free(s
->tlsext_ecpointformatlist
);
1049 OPENSSL_free(s
->tlsext_ellipticcurvelist
);
1050 #endif /* OPENSSL_NO_EC */
1051 sk_X509_EXTENSION_pop_free(s
->tlsext_ocsp_exts
, X509_EXTENSION_free
);
1052 sk_OCSP_RESPID_pop_free(s
->tlsext_ocsp_ids
, OCSP_RESPID_free
);
1053 #ifndef OPENSSL_NO_CT
1054 SCT_LIST_free(s
->scts
);
1055 OPENSSL_free(s
->tlsext_scts
);
1057 OPENSSL_free(s
->tlsext_ocsp_resp
);
1058 OPENSSL_free(s
->alpn_client_proto_list
);
1060 sk_X509_NAME_pop_free(s
->client_CA
, X509_NAME_free
);
1062 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1064 if (s
->method
!= NULL
)
1065 s
->method
->ssl_free(s
);
1067 RECORD_LAYER_release(&s
->rlayer
);
1069 SSL_CTX_free(s
->ctx
);
1071 ASYNC_WAIT_CTX_free(s
->waitctx
);
1073 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1074 OPENSSL_free(s
->next_proto_negotiated
);
1077 #ifndef OPENSSL_NO_SRTP
1078 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1084 void SSL_set_rbio(SSL
*s
, BIO
*rbio
)
1086 if (s
->rbio
!= rbio
)
1087 BIO_free_all(s
->rbio
);
1091 void SSL_set_wbio(SSL
*s
, BIO
*wbio
)
1094 * If the output buffering BIO is still in place, remove it
1096 if (s
->bbio
!= NULL
) {
1097 if (s
->wbio
== s
->bbio
) {
1098 s
->wbio
= s
->wbio
->next_bio
;
1099 s
->bbio
->next_bio
= NULL
;
1102 if (s
->wbio
!= wbio
&& s
->rbio
!= s
->wbio
)
1103 BIO_free_all(s
->wbio
);
1107 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1109 SSL_set_wbio(s
, wbio
);
1110 SSL_set_rbio(s
, rbio
);
1113 BIO
*SSL_get_rbio(const SSL
*s
)
1118 BIO
*SSL_get_wbio(const SSL
*s
)
1123 int SSL_get_fd(const SSL
*s
)
1125 return (SSL_get_rfd(s
));
1128 int SSL_get_rfd(const SSL
*s
)
1133 b
= SSL_get_rbio(s
);
1134 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1136 BIO_get_fd(r
, &ret
);
1140 int SSL_get_wfd(const SSL
*s
)
1145 b
= SSL_get_wbio(s
);
1146 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1148 BIO_get_fd(r
, &ret
);
1152 #ifndef OPENSSL_NO_SOCK
1153 int SSL_set_fd(SSL
*s
, int fd
)
1158 bio
= BIO_new(BIO_s_socket());
1161 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1164 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1165 SSL_set_bio(s
, bio
, bio
);
1171 int SSL_set_wfd(SSL
*s
, int fd
)
1176 if ((s
->rbio
== NULL
) || (BIO_method_type(s
->rbio
) != BIO_TYPE_SOCKET
)
1177 || ((int)BIO_get_fd(s
->rbio
, NULL
) != fd
)) {
1178 bio
= BIO_new(BIO_s_socket());
1181 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1184 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1185 SSL_set_bio(s
, SSL_get_rbio(s
), bio
);
1187 SSL_set_bio(s
, SSL_get_rbio(s
), SSL_get_rbio(s
));
1193 int SSL_set_rfd(SSL
*s
, int fd
)
1198 if ((s
->wbio
== NULL
) || (BIO_method_type(s
->wbio
) != BIO_TYPE_SOCKET
)
1199 || ((int)BIO_get_fd(s
->wbio
, NULL
) != fd
)) {
1200 bio
= BIO_new(BIO_s_socket());
1203 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1206 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1207 SSL_set_bio(s
, bio
, SSL_get_wbio(s
));
1209 SSL_set_bio(s
, SSL_get_wbio(s
), SSL_get_wbio(s
));
1216 /* return length of latest Finished message we sent, copy to 'buf' */
1217 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1221 if (s
->s3
!= NULL
) {
1222 ret
= s
->s3
->tmp
.finish_md_len
;
1225 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1230 /* return length of latest Finished message we expected, copy to 'buf' */
1231 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1235 if (s
->s3
!= NULL
) {
1236 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1239 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1244 int SSL_get_verify_mode(const SSL
*s
)
1246 return (s
->verify_mode
);
1249 int SSL_get_verify_depth(const SSL
*s
)
1251 return X509_VERIFY_PARAM_get_depth(s
->param
);
1254 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1255 return (s
->verify_callback
);
1258 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1260 return (ctx
->verify_mode
);
1263 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1265 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1268 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1269 return (ctx
->default_verify_callback
);
1272 void SSL_set_verify(SSL
*s
, int mode
,
1273 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1275 s
->verify_mode
= mode
;
1276 if (callback
!= NULL
)
1277 s
->verify_callback
= callback
;
1280 void SSL_set_verify_depth(SSL
*s
, int depth
)
1282 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1285 void SSL_set_read_ahead(SSL
*s
, int yes
)
1287 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1290 int SSL_get_read_ahead(const SSL
*s
)
1292 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1295 int SSL_pending(const SSL
*s
)
1298 * SSL_pending cannot work properly if read-ahead is enabled
1299 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1300 * impossible to fix since SSL_pending cannot report errors that may be
1301 * observed while scanning the new data. (Note that SSL_pending() is
1302 * often used as a boolean value, so we'd better not return -1.)
1304 return (s
->method
->ssl_pending(s
));
1307 X509
*SSL_get_peer_certificate(const SSL
*s
)
1311 if ((s
== NULL
) || (s
->session
== NULL
))
1314 r
= s
->session
->peer
;
1324 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1328 if ((s
== NULL
) || (s
->session
== NULL
))
1331 r
= s
->session
->peer_chain
;
1334 * If we are a client, cert_chain includes the peer's own certificate; if
1335 * we are a server, it does not.
1342 * Now in theory, since the calling process own 't' it should be safe to
1343 * modify. We need to be able to read f without being hassled
1345 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1347 /* Do we need to to SSL locking? */
1348 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1353 * what if we are setup for one protocol version but want to talk another
1355 if (t
->method
!= f
->method
) {
1356 t
->method
->ssl_free(t
);
1357 t
->method
= f
->method
;
1358 if (t
->method
->ssl_new(t
) == 0)
1362 CRYPTO_add(&f
->cert
->references
, 1, CRYPTO_LOCK_SSL_CERT
);
1363 ssl_cert_free(t
->cert
);
1365 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, f
->sid_ctx_length
)) {
1372 /* Fix this so it checks all the valid key/cert options */
1373 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1375 if ((ctx
== NULL
) ||
1376 (ctx
->cert
->key
->x509
== NULL
)) {
1377 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
,
1378 SSL_R_NO_CERTIFICATE_ASSIGNED
);
1381 if (ctx
->cert
->key
->privatekey
== NULL
) {
1382 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
,
1383 SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1386 return (X509_check_private_key
1387 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1390 /* Fix this function so that it takes an optional type parameter */
1391 int SSL_check_private_key(const SSL
*ssl
)
1394 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1397 if (ssl
->cert
->key
->x509
== NULL
) {
1398 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1401 if (ssl
->cert
->key
->privatekey
== NULL
) {
1402 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1405 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1406 ssl
->cert
->key
->privatekey
));
1409 int SSL_waiting_for_async(SSL
*s
)
1417 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1419 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1423 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1426 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1427 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1429 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1433 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1437 int SSL_accept(SSL
*s
)
1439 if (s
->handshake_func
== NULL
) {
1440 /* Not properly initialized yet */
1441 SSL_set_accept_state(s
);
1444 return SSL_do_handshake(s
);
1447 int SSL_connect(SSL
*s
)
1449 if (s
->handshake_func
== NULL
) {
1450 /* Not properly initialized yet */
1451 SSL_set_connect_state(s
);
1454 return SSL_do_handshake(s
);
1457 long SSL_get_default_timeout(const SSL
*s
)
1459 return (s
->method
->get_timeout());
1462 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1463 int (*func
)(void *)) {
1465 if (s
->waitctx
== NULL
) {
1466 s
->waitctx
= ASYNC_WAIT_CTX_new();
1467 if (s
->waitctx
== NULL
)
1470 switch(ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1471 sizeof(struct ssl_async_args
))) {
1473 s
->rwstate
= SSL_NOTHING
;
1474 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1477 s
->rwstate
= SSL_ASYNC_PAUSED
;
1483 s
->rwstate
= SSL_NOTHING
;
1484 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1485 /* Shouldn't happen */
1490 static int ssl_io_intern(void *vargs
)
1492 struct ssl_async_args
*args
;
1497 args
= (struct ssl_async_args
*)vargs
;
1501 switch (args
->type
) {
1503 return args
->f
.func_read(s
, buf
, num
);
1505 return args
->f
.func_write(s
, buf
, num
);
1507 return args
->f
.func_other(s
);
1512 int SSL_read(SSL
*s
, void *buf
, int num
)
1514 if (s
->handshake_func
== NULL
) {
1515 SSLerr(SSL_F_SSL_READ
, SSL_R_UNINITIALIZED
);
1519 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1520 s
->rwstate
= SSL_NOTHING
;
1524 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1525 struct ssl_async_args args
;
1530 args
.type
= READFUNC
;
1531 args
.f
.func_read
= s
->method
->ssl_read
;
1533 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1535 return s
->method
->ssl_read(s
, buf
, num
);
1539 int SSL_peek(SSL
*s
, void *buf
, int num
)
1541 if (s
->handshake_func
== NULL
) {
1542 SSLerr(SSL_F_SSL_PEEK
, SSL_R_UNINITIALIZED
);
1546 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1549 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1550 struct ssl_async_args args
;
1555 args
.type
= READFUNC
;
1556 args
.f
.func_read
= s
->method
->ssl_peek
;
1558 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1560 return s
->method
->ssl_peek(s
, buf
, num
);
1564 int SSL_write(SSL
*s
, const void *buf
, int num
)
1566 if (s
->handshake_func
== NULL
) {
1567 SSLerr(SSL_F_SSL_WRITE
, SSL_R_UNINITIALIZED
);
1571 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1572 s
->rwstate
= SSL_NOTHING
;
1573 SSLerr(SSL_F_SSL_WRITE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1577 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1578 struct ssl_async_args args
;
1581 args
.buf
= (void *)buf
;
1583 args
.type
= WRITEFUNC
;
1584 args
.f
.func_write
= s
->method
->ssl_write
;
1586 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1588 return s
->method
->ssl_write(s
, buf
, num
);
1592 int SSL_shutdown(SSL
*s
)
1595 * Note that this function behaves differently from what one might
1596 * expect. Return values are 0 for no success (yet), 1 for success; but
1597 * calling it once is usually not enough, even if blocking I/O is used
1598 * (see ssl3_shutdown).
1601 if (s
->handshake_func
== NULL
) {
1602 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1606 if (!SSL_in_init(s
)) {
1607 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1608 struct ssl_async_args args
;
1611 args
.type
= OTHERFUNC
;
1612 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1614 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1616 return s
->method
->ssl_shutdown(s
);
1619 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1624 int SSL_renegotiate(SSL
*s
)
1626 if (s
->renegotiate
== 0)
1631 return (s
->method
->ssl_renegotiate(s
));
1634 int SSL_renegotiate_abbreviated(SSL
*s
)
1636 if (s
->renegotiate
== 0)
1641 return (s
->method
->ssl_renegotiate(s
));
1644 int SSL_renegotiate_pending(SSL
*s
)
1647 * becomes true when negotiation is requested; false again once a
1648 * handshake has finished
1650 return (s
->renegotiate
!= 0);
1653 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1658 case SSL_CTRL_GET_READ_AHEAD
:
1659 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1660 case SSL_CTRL_SET_READ_AHEAD
:
1661 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1662 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1665 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1666 s
->msg_callback_arg
= parg
;
1670 return (s
->mode
|= larg
);
1671 case SSL_CTRL_CLEAR_MODE
:
1672 return (s
->mode
&= ~larg
);
1673 case SSL_CTRL_GET_MAX_CERT_LIST
:
1674 return (s
->max_cert_list
);
1675 case SSL_CTRL_SET_MAX_CERT_LIST
:
1676 l
= s
->max_cert_list
;
1677 s
->max_cert_list
= larg
;
1679 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1680 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1682 s
->max_send_fragment
= larg
;
1684 case SSL_CTRL_GET_RI_SUPPORT
:
1686 return s
->s3
->send_connection_binding
;
1689 case SSL_CTRL_CERT_FLAGS
:
1690 return (s
->cert
->cert_flags
|= larg
);
1691 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1692 return (s
->cert
->cert_flags
&= ~larg
);
1694 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1696 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1698 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1699 return (int)s
->s3
->tmp
.ciphers_rawlen
;
1701 return TLS_CIPHER_LEN
;
1703 case SSL_CTRL_GET_EXTMS_SUPPORT
:
1704 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
1706 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
1710 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1711 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1712 &s
->min_proto_version
);
1713 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1714 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1715 &s
->max_proto_version
);
1717 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
1721 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
1724 case SSL_CTRL_SET_MSG_CALLBACK
:
1725 s
->msg_callback
= (void (*)
1726 (int write_p
, int version
, int content_type
,
1727 const void *buf
, size_t len
, SSL
*ssl
,
1732 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
1736 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
1738 return ctx
->sessions
;
1741 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
1744 /* For some cases with ctx == NULL perform syntax checks */
1747 #ifndef OPENSSL_NO_EC
1748 case SSL_CTRL_SET_CURVES_LIST
:
1749 return tls1_set_curves_list(NULL
, NULL
, parg
);
1751 case SSL_CTRL_SET_SIGALGS_LIST
:
1752 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
1753 return tls1_set_sigalgs_list(NULL
, parg
, 0);
1760 case SSL_CTRL_GET_READ_AHEAD
:
1761 return (ctx
->read_ahead
);
1762 case SSL_CTRL_SET_READ_AHEAD
:
1763 l
= ctx
->read_ahead
;
1764 ctx
->read_ahead
= larg
;
1767 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1768 ctx
->msg_callback_arg
= parg
;
1771 case SSL_CTRL_GET_MAX_CERT_LIST
:
1772 return (ctx
->max_cert_list
);
1773 case SSL_CTRL_SET_MAX_CERT_LIST
:
1774 l
= ctx
->max_cert_list
;
1775 ctx
->max_cert_list
= larg
;
1778 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
1779 l
= ctx
->session_cache_size
;
1780 ctx
->session_cache_size
= larg
;
1782 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
1783 return (ctx
->session_cache_size
);
1784 case SSL_CTRL_SET_SESS_CACHE_MODE
:
1785 l
= ctx
->session_cache_mode
;
1786 ctx
->session_cache_mode
= larg
;
1788 case SSL_CTRL_GET_SESS_CACHE_MODE
:
1789 return (ctx
->session_cache_mode
);
1791 case SSL_CTRL_SESS_NUMBER
:
1792 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
1793 case SSL_CTRL_SESS_CONNECT
:
1794 return (ctx
->stats
.sess_connect
);
1795 case SSL_CTRL_SESS_CONNECT_GOOD
:
1796 return (ctx
->stats
.sess_connect_good
);
1797 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
1798 return (ctx
->stats
.sess_connect_renegotiate
);
1799 case SSL_CTRL_SESS_ACCEPT
:
1800 return (ctx
->stats
.sess_accept
);
1801 case SSL_CTRL_SESS_ACCEPT_GOOD
:
1802 return (ctx
->stats
.sess_accept_good
);
1803 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
1804 return (ctx
->stats
.sess_accept_renegotiate
);
1805 case SSL_CTRL_SESS_HIT
:
1806 return (ctx
->stats
.sess_hit
);
1807 case SSL_CTRL_SESS_CB_HIT
:
1808 return (ctx
->stats
.sess_cb_hit
);
1809 case SSL_CTRL_SESS_MISSES
:
1810 return (ctx
->stats
.sess_miss
);
1811 case SSL_CTRL_SESS_TIMEOUTS
:
1812 return (ctx
->stats
.sess_timeout
);
1813 case SSL_CTRL_SESS_CACHE_FULL
:
1814 return (ctx
->stats
.sess_cache_full
);
1816 return (ctx
->mode
|= larg
);
1817 case SSL_CTRL_CLEAR_MODE
:
1818 return (ctx
->mode
&= ~larg
);
1819 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1820 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1822 ctx
->max_send_fragment
= larg
;
1824 case SSL_CTRL_CERT_FLAGS
:
1825 return (ctx
->cert
->cert_flags
|= larg
);
1826 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1827 return (ctx
->cert
->cert_flags
&= ~larg
);
1828 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1829 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
1830 &ctx
->min_proto_version
);
1831 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1832 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
1833 &ctx
->max_proto_version
);
1835 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
1839 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
1842 case SSL_CTRL_SET_MSG_CALLBACK
:
1843 ctx
->msg_callback
= (void (*)
1844 (int write_p
, int version
, int content_type
,
1845 const void *buf
, size_t len
, SSL
*ssl
,
1850 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
1854 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
1863 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
1864 const SSL_CIPHER
*const *bp
)
1866 if ((*ap
)->id
> (*bp
)->id
)
1868 if ((*ap
)->id
< (*bp
)->id
)
1873 /** return a STACK of the ciphers available for the SSL and in order of
1875 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
1878 if (s
->cipher_list
!= NULL
) {
1879 return (s
->cipher_list
);
1880 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
1881 return (s
->ctx
->cipher_list
);
1887 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
1889 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
1891 return s
->session
->ciphers
;
1894 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
1896 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
1898 ciphers
= SSL_get_ciphers(s
);
1901 ssl_set_client_disabled(s
);
1902 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
1903 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
1904 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
)) {
1906 sk
= sk_SSL_CIPHER_new_null();
1909 if (!sk_SSL_CIPHER_push(sk
, c
)) {
1910 sk_SSL_CIPHER_free(sk
);
1918 /** return a STACK of the ciphers available for the SSL and in order of
1920 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
1923 if (s
->cipher_list_by_id
!= NULL
) {
1924 return (s
->cipher_list_by_id
);
1925 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
1926 return (s
->ctx
->cipher_list_by_id
);
1932 /** The old interface to get the same thing as SSL_get_ciphers() */
1933 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
1935 const SSL_CIPHER
*c
;
1936 STACK_OF(SSL_CIPHER
) *sk
;
1940 sk
= SSL_get_ciphers(s
);
1941 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
1943 c
= sk_SSL_CIPHER_value(sk
, n
);
1949 /** specify the ciphers to be used by default by the SSL_CTX */
1950 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
1952 STACK_OF(SSL_CIPHER
) *sk
;
1954 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
1955 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
1957 * ssl_create_cipher_list may return an empty stack if it was unable to
1958 * find a cipher matching the given rule string (for example if the rule
1959 * string specifies a cipher which has been disabled). This is not an
1960 * error as far as ssl_create_cipher_list is concerned, and hence
1961 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1965 else if (sk_SSL_CIPHER_num(sk
) == 0) {
1966 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
1972 /** specify the ciphers to be used by the SSL */
1973 int SSL_set_cipher_list(SSL
*s
, const char *str
)
1975 STACK_OF(SSL_CIPHER
) *sk
;
1977 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
1978 &s
->cipher_list_by_id
, str
, s
->cert
);
1979 /* see comment in SSL_CTX_set_cipher_list */
1982 else if (sk_SSL_CIPHER_num(sk
) == 0) {
1983 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
1989 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
1992 STACK_OF(SSL_CIPHER
) *sk
;
1993 const SSL_CIPHER
*c
;
1996 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2000 sk
= s
->session
->ciphers
;
2002 if (sk_SSL_CIPHER_num(sk
) == 0)
2005 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2008 c
= sk_SSL_CIPHER_value(sk
, i
);
2009 n
= strlen(c
->name
);
2016 memcpy(p
, c
->name
, n
+ 1);
2025 /** return a servername extension value if provided in Client Hello, or NULL.
2026 * So far, only host_name types are defined (RFC 3546).
2029 const char *SSL_get_servername(const SSL
*s
, const int type
)
2031 if (type
!= TLSEXT_NAMETYPE_host_name
)
2034 return s
->session
&& !s
->tlsext_hostname
?
2035 s
->session
->tlsext_hostname
: s
->tlsext_hostname
;
2038 int SSL_get_servername_type(const SSL
*s
)
2041 && (!s
->tlsext_hostname
? s
->session
->
2042 tlsext_hostname
: s
->tlsext_hostname
))
2043 return TLSEXT_NAMETYPE_host_name
;
2048 * SSL_select_next_proto implements the standard protocol selection. It is
2049 * expected that this function is called from the callback set by
2050 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2051 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2052 * not included in the length. A byte string of length 0 is invalid. No byte
2053 * string may be truncated. The current, but experimental algorithm for
2054 * selecting the protocol is: 1) If the server doesn't support NPN then this
2055 * is indicated to the callback. In this case, the client application has to
2056 * abort the connection or have a default application level protocol. 2) If
2057 * the server supports NPN, but advertises an empty list then the client
2058 * selects the first protcol in its list, but indicates via the API that this
2059 * fallback case was enacted. 3) Otherwise, the client finds the first
2060 * protocol in the server's list that it supports and selects this protocol.
2061 * This is because it's assumed that the server has better information about
2062 * which protocol a client should use. 4) If the client doesn't support any
2063 * of the server's advertised protocols, then this is treated the same as
2064 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2065 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2067 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2068 const unsigned char *server
,
2069 unsigned int server_len
,
2070 const unsigned char *client
,
2071 unsigned int client_len
)
2074 const unsigned char *result
;
2075 int status
= OPENSSL_NPN_UNSUPPORTED
;
2078 * For each protocol in server preference order, see if we support it.
2080 for (i
= 0; i
< server_len
;) {
2081 for (j
= 0; j
< client_len
;) {
2082 if (server
[i
] == client
[j
] &&
2083 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2084 /* We found a match */
2085 result
= &server
[i
];
2086 status
= OPENSSL_NPN_NEGOTIATED
;
2096 /* There's no overlap between our protocols and the server's list. */
2098 status
= OPENSSL_NPN_NO_OVERLAP
;
2101 *out
= (unsigned char *)result
+ 1;
2102 *outlen
= result
[0];
2106 #ifndef OPENSSL_NO_NEXTPROTONEG
2108 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2109 * client's requested protocol for this connection and returns 0. If the
2110 * client didn't request any protocol, then *data is set to NULL. Note that
2111 * the client can request any protocol it chooses. The value returned from
2112 * this function need not be a member of the list of supported protocols
2113 * provided by the callback.
2115 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2118 *data
= s
->next_proto_negotiated
;
2122 *len
= s
->next_proto_negotiated_len
;
2127 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2128 * a TLS server needs a list of supported protocols for Next Protocol
2129 * Negotiation. The returned list must be in wire format. The list is
2130 * returned by setting |out| to point to it and |outlen| to its length. This
2131 * memory will not be modified, but one should assume that the SSL* keeps a
2132 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2133 * wishes to advertise. Otherwise, no such extension will be included in the
2136 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX
*ctx
,
2137 int (*cb
) (SSL
*ssl
,
2140 unsigned int *outlen
,
2141 void *arg
), void *arg
)
2143 ctx
->next_protos_advertised_cb
= cb
;
2144 ctx
->next_protos_advertised_cb_arg
= arg
;
2148 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2149 * client needs to select a protocol from the server's provided list. |out|
2150 * must be set to point to the selected protocol (which may be within |in|).
2151 * The length of the protocol name must be written into |outlen|. The
2152 * server's advertised protocols are provided in |in| and |inlen|. The
2153 * callback can assume that |in| is syntactically valid. The client must
2154 * select a protocol. It is fatal to the connection if this callback returns
2155 * a value other than SSL_TLSEXT_ERR_OK.
2157 void SSL_CTX_set_next_proto_select_cb(SSL_CTX
*ctx
,
2158 int (*cb
) (SSL
*s
, unsigned char **out
,
2159 unsigned char *outlen
,
2160 const unsigned char *in
,
2162 void *arg
), void *arg
)
2164 ctx
->next_proto_select_cb
= cb
;
2165 ctx
->next_proto_select_cb_arg
= arg
;
2170 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2171 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2172 * length-prefixed strings). Returns 0 on success.
2174 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2175 unsigned protos_len
)
2177 OPENSSL_free(ctx
->alpn_client_proto_list
);
2178 ctx
->alpn_client_proto_list
= OPENSSL_malloc(protos_len
);
2179 if (ctx
->alpn_client_proto_list
== NULL
) {
2180 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2183 memcpy(ctx
->alpn_client_proto_list
, protos
, protos_len
);
2184 ctx
->alpn_client_proto_list_len
= protos_len
;
2190 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2191 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2192 * length-prefixed strings). Returns 0 on success.
2194 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2195 unsigned protos_len
)
2197 OPENSSL_free(ssl
->alpn_client_proto_list
);
2198 ssl
->alpn_client_proto_list
= OPENSSL_malloc(protos_len
);
2199 if (ssl
->alpn_client_proto_list
== NULL
) {
2200 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2203 memcpy(ssl
->alpn_client_proto_list
, protos
, protos_len
);
2204 ssl
->alpn_client_proto_list_len
= protos_len
;
2210 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2211 * called during ClientHello processing in order to select an ALPN protocol
2212 * from the client's list of offered protocols.
2214 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2215 int (*cb
) (SSL
*ssl
,
2216 const unsigned char **out
,
2217 unsigned char *outlen
,
2218 const unsigned char *in
,
2220 void *arg
), void *arg
)
2222 ctx
->alpn_select_cb
= cb
;
2223 ctx
->alpn_select_cb_arg
= arg
;
2227 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2228 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2229 * (not including the leading length-prefix byte). If the server didn't
2230 * respond with a negotiated protocol then |*len| will be zero.
2232 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2237 *data
= ssl
->s3
->alpn_selected
;
2241 *len
= ssl
->s3
->alpn_selected_len
;
2245 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2246 const char *label
, size_t llen
,
2247 const unsigned char *p
, size_t plen
,
2250 if (s
->version
< TLS1_VERSION
)
2253 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2258 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2263 ((unsigned int)a
->session_id
[0]) |
2264 ((unsigned int)a
->session_id
[1] << 8L) |
2265 ((unsigned long)a
->session_id
[2] << 16L) |
2266 ((unsigned long)a
->session_id
[3] << 24L);
2271 * NB: If this function (or indeed the hash function which uses a sort of
2272 * coarser function than this one) is changed, ensure
2273 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2274 * being able to construct an SSL_SESSION that will collide with any existing
2275 * session with a matching session ID.
2277 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2279 if (a
->ssl_version
!= b
->ssl_version
)
2281 if (a
->session_id_length
!= b
->session_id_length
)
2283 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2287 * These wrapper functions should remain rather than redeclaring
2288 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2289 * variable. The reason is that the functions aren't static, they're exposed
2293 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2295 SSL_CTX
*ret
= NULL
;
2298 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2302 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2305 if (FIPS_mode() && (meth
->version
< TLS1_VERSION
)) {
2306 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE
);
2310 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2311 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2314 ret
= OPENSSL_zalloc(sizeof(*ret
));
2319 ret
->min_proto_version
= 0;
2320 ret
->max_proto_version
= 0;
2321 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2322 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2323 /* We take the system default. */
2324 ret
->session_timeout
= meth
->get_timeout();
2325 ret
->references
= 1;
2326 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2327 ret
->verify_mode
= SSL_VERIFY_NONE
;
2328 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2331 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2332 if (ret
->sessions
== NULL
)
2334 ret
->cert_store
= X509_STORE_new();
2335 if (ret
->cert_store
== NULL
)
2337 #ifndef OPENSSL_NO_CT
2338 ret
->ctlog_store
= CTLOG_STORE_new();
2339 if (ret
->ctlog_store
== NULL
)
2342 if (!ssl_create_cipher_list(ret
->method
,
2343 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2344 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2345 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2346 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2350 ret
->param
= X509_VERIFY_PARAM_new();
2351 if (ret
->param
== NULL
)
2354 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2355 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2358 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2359 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2363 if ((ret
->client_CA
= sk_X509_NAME_new_null()) == NULL
)
2366 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
);
2368 /* No compression for DTLS */
2369 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2370 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2372 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2374 /* Setup RFC4507 ticket keys */
2375 if ((RAND_bytes(ret
->tlsext_tick_key_name
, 16) <= 0)
2376 || (RAND_bytes(ret
->tlsext_tick_hmac_key
, 16) <= 0)
2377 || (RAND_bytes(ret
->tlsext_tick_aes_key
, 16) <= 0))
2378 ret
->options
|= SSL_OP_NO_TICKET
;
2380 #ifndef OPENSSL_NO_SRP
2381 if (!SSL_CTX_SRP_CTX_init(ret
))
2384 #ifndef OPENSSL_NO_ENGINE
2385 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2386 # define eng_strx(x) #x
2387 # define eng_str(x) eng_strx(x)
2388 /* Use specific client engine automatically... ignore errors */
2391 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2394 ENGINE_load_builtin_engines();
2395 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2397 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2403 * Default is to connect to non-RI servers. When RI is more widely
2404 * deployed might change this.
2406 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2408 * Disable compression by default to prevent CRIME. Applications can
2409 * re-enable compression by configuring
2410 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2411 * or by using the SSL_CONF library.
2413 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2417 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2423 void SSL_CTX_up_ref(SSL_CTX
*ctx
)
2425 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
2428 void SSL_CTX_free(SSL_CTX
*a
)
2435 i
= CRYPTO_add(&a
->references
, -1, CRYPTO_LOCK_SSL_CTX
);
2436 REF_PRINT_COUNT("SSL_CTX", a
);
2439 REF_ASSERT_ISNT(i
< 0);
2441 X509_VERIFY_PARAM_free(a
->param
);
2442 dane_ctx_final(&a
->dane
);
2445 * Free internal session cache. However: the remove_cb() may reference
2446 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2447 * after the sessions were flushed.
2448 * As the ex_data handling routines might also touch the session cache,
2449 * the most secure solution seems to be: empty (flush) the cache, then
2450 * free ex_data, then finally free the cache.
2451 * (See ticket [openssl.org #212].)
2453 if (a
->sessions
!= NULL
)
2454 SSL_CTX_flush_sessions(a
, 0);
2456 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2457 lh_SSL_SESSION_free(a
->sessions
);
2458 X509_STORE_free(a
->cert_store
);
2459 #ifndef OPENSSL_NO_CT
2460 CTLOG_STORE_free(a
->ctlog_store
);
2462 sk_SSL_CIPHER_free(a
->cipher_list
);
2463 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2464 ssl_cert_free(a
->cert
);
2465 sk_X509_NAME_pop_free(a
->client_CA
, X509_NAME_free
);
2466 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2467 a
->comp_methods
= NULL
;
2468 #ifndef OPENSSL_NO_SRTP
2469 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2471 #ifndef OPENSSL_NO_SRP
2472 SSL_CTX_SRP_CTX_free(a
);
2474 #ifndef OPENSSL_NO_ENGINE
2475 ENGINE_finish(a
->client_cert_engine
);
2478 #ifndef OPENSSL_NO_EC
2479 OPENSSL_free(a
->tlsext_ecpointformatlist
);
2480 OPENSSL_free(a
->tlsext_ellipticcurvelist
);
2482 OPENSSL_free(a
->alpn_client_proto_list
);
2487 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2489 ctx
->default_passwd_callback
= cb
;
2492 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2494 ctx
->default_passwd_callback_userdata
= u
;
2497 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2499 return ctx
->default_passwd_callback
;
2502 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2504 return ctx
->default_passwd_callback_userdata
;
2507 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2509 s
->default_passwd_callback
= cb
;
2512 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2514 s
->default_passwd_callback_userdata
= u
;
2517 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2519 return s
->default_passwd_callback
;
2522 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2524 return s
->default_passwd_callback_userdata
;
2527 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2528 int (*cb
) (X509_STORE_CTX
*, void *),
2531 ctx
->app_verify_callback
= cb
;
2532 ctx
->app_verify_arg
= arg
;
2535 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2536 int (*cb
) (int, X509_STORE_CTX
*))
2538 ctx
->verify_mode
= mode
;
2539 ctx
->default_verify_callback
= cb
;
2542 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2544 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2547 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
),
2550 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2553 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2555 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2558 void ssl_set_masks(SSL
*s
)
2560 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2564 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2565 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2566 unsigned long mask_k
, mask_a
;
2567 #ifndef OPENSSL_NO_EC
2568 int have_ecc_cert
, ecdsa_ok
;
2574 #ifndef OPENSSL_NO_DH
2575 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2580 rsa_enc
= pvalid
[SSL_PKEY_RSA_ENC
] & CERT_PKEY_VALID
;
2581 rsa_sign
= pvalid
[SSL_PKEY_RSA_SIGN
] & CERT_PKEY_SIGN
;
2582 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_SIGN
;
2583 #ifndef OPENSSL_NO_EC
2584 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2590 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2591 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2594 #ifndef OPENSSL_NO_GOST
2595 cpk
= &(c
->pkeys
[SSL_PKEY_GOST12_512
]);
2596 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2597 mask_k
|= SSL_kGOST
;
2598 mask_a
|= SSL_aGOST12
;
2600 cpk
= &(c
->pkeys
[SSL_PKEY_GOST12_256
]);
2601 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2602 mask_k
|= SSL_kGOST
;
2603 mask_a
|= SSL_aGOST12
;
2605 cpk
= &(c
->pkeys
[SSL_PKEY_GOST01
]);
2606 if (cpk
->x509
!= NULL
&& cpk
->privatekey
!= NULL
) {
2607 mask_k
|= SSL_kGOST
;
2608 mask_a
|= SSL_aGOST01
;
2618 if (rsa_enc
|| rsa_sign
) {
2626 mask_a
|= SSL_aNULL
;
2629 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2630 * depending on the key usage extension.
2632 #ifndef OPENSSL_NO_EC
2633 if (have_ecc_cert
) {
2635 cpk
= &c
->pkeys
[SSL_PKEY_ECC
];
2637 ex_kusage
= X509_get_key_usage(x
);
2638 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2639 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2642 mask_a
|= SSL_aECDSA
;
2646 #ifndef OPENSSL_NO_EC
2647 mask_k
|= SSL_kECDHE
;
2650 #ifndef OPENSSL_NO_PSK
2653 if (mask_k
& SSL_kRSA
)
2654 mask_k
|= SSL_kRSAPSK
;
2655 if (mask_k
& SSL_kDHE
)
2656 mask_k
|= SSL_kDHEPSK
;
2657 if (mask_k
& SSL_kECDHE
)
2658 mask_k
|= SSL_kECDHEPSK
;
2661 s
->s3
->tmp
.mask_k
= mask_k
;
2662 s
->s3
->tmp
.mask_a
= mask_a
;
2665 #ifndef OPENSSL_NO_EC
2667 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
2669 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
2670 /* key usage, if present, must allow signing */
2671 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
2672 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
2673 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
2677 return 1; /* all checks are ok */
2682 static int ssl_get_server_cert_index(const SSL
*s
)
2685 idx
= ssl_cipher_get_cert_index(s
->s3
->tmp
.new_cipher
);
2686 if (idx
== SSL_PKEY_RSA_ENC
&& !s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
)
2687 idx
= SSL_PKEY_RSA_SIGN
;
2688 if (idx
== SSL_PKEY_GOST_EC
) {
2689 if (s
->cert
->pkeys
[SSL_PKEY_GOST12_512
].x509
)
2690 idx
= SSL_PKEY_GOST12_512
;
2691 else if (s
->cert
->pkeys
[SSL_PKEY_GOST12_256
].x509
)
2692 idx
= SSL_PKEY_GOST12_256
;
2693 else if (s
->cert
->pkeys
[SSL_PKEY_GOST01
].x509
)
2694 idx
= SSL_PKEY_GOST01
;
2699 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX
, ERR_R_INTERNAL_ERROR
);
2703 CERT_PKEY
*ssl_get_server_send_pkey(SSL
*s
)
2709 if (!s
->s3
|| !s
->s3
->tmp
.new_cipher
)
2713 i
= ssl_get_server_cert_index(s
);
2715 /* This may or may not be an error. */
2720 return &c
->pkeys
[i
];
2723 EVP_PKEY
*ssl_get_sign_pkey(SSL
*s
, const SSL_CIPHER
*cipher
,
2726 unsigned long alg_a
;
2730 alg_a
= cipher
->algorithm_auth
;
2733 if ((alg_a
& SSL_aDSS
) &&
2734 (c
->pkeys
[SSL_PKEY_DSA_SIGN
].privatekey
!= NULL
))
2735 idx
= SSL_PKEY_DSA_SIGN
;
2736 else if (alg_a
& SSL_aRSA
) {
2737 if (c
->pkeys
[SSL_PKEY_RSA_SIGN
].privatekey
!= NULL
)
2738 idx
= SSL_PKEY_RSA_SIGN
;
2739 else if (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
!= NULL
)
2740 idx
= SSL_PKEY_RSA_ENC
;
2741 } else if ((alg_a
& SSL_aECDSA
) &&
2742 (c
->pkeys
[SSL_PKEY_ECC
].privatekey
!= NULL
))
2745 SSLerr(SSL_F_SSL_GET_SIGN_PKEY
, ERR_R_INTERNAL_ERROR
);
2749 *pmd
= s
->s3
->tmp
.md
[idx
];
2750 return c
->pkeys
[idx
].privatekey
;
2753 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
2754 size_t *serverinfo_length
)
2758 *serverinfo_length
= 0;
2761 i
= ssl_get_server_cert_index(s
);
2765 if (c
->pkeys
[i
].serverinfo
== NULL
)
2768 *serverinfo
= c
->pkeys
[i
].serverinfo
;
2769 *serverinfo_length
= c
->pkeys
[i
].serverinfo_length
;
2773 void ssl_update_cache(SSL
*s
, int mode
)
2778 * If the session_id_length is 0, we are not supposed to cache it, and it
2779 * would be rather hard to do anyway :-)
2781 if (s
->session
->session_id_length
== 0)
2784 i
= s
->session_ctx
->session_cache_mode
;
2785 if ((i
& mode
) && (!s
->hit
)
2786 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
2787 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
2788 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
2789 CRYPTO_add(&s
->session
->references
, 1, CRYPTO_LOCK_SSL_SESSION
);
2790 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
2791 SSL_SESSION_free(s
->session
);
2794 /* auto flush every 255 connections */
2795 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
2796 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
2797 ? s
->session_ctx
->stats
.sess_connect_good
2798 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
2799 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
2804 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
2809 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
2814 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
2818 if (s
->method
!= meth
) {
2819 const SSL_METHOD
*sm
= s
->method
;
2820 int (*hf
)(SSL
*) = s
->handshake_func
;
2822 if (sm
->version
== meth
->version
)
2827 ret
= s
->method
->ssl_new(s
);
2830 if (hf
== sm
->ssl_connect
)
2831 s
->handshake_func
= meth
->ssl_connect
;
2832 else if (hf
== sm
->ssl_accept
)
2833 s
->handshake_func
= meth
->ssl_accept
;
2838 int SSL_get_error(const SSL
*s
, int i
)
2845 return (SSL_ERROR_NONE
);
2848 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2849 * where we do encode the error
2851 if ((l
= ERR_peek_error()) != 0) {
2852 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
2853 return (SSL_ERROR_SYSCALL
);
2855 return (SSL_ERROR_SSL
);
2858 if ((i
< 0) && SSL_want_read(s
)) {
2859 bio
= SSL_get_rbio(s
);
2860 if (BIO_should_read(bio
))
2861 return (SSL_ERROR_WANT_READ
);
2862 else if (BIO_should_write(bio
))
2864 * This one doesn't make too much sense ... We never try to write
2865 * to the rbio, and an application program where rbio and wbio
2866 * are separate couldn't even know what it should wait for.
2867 * However if we ever set s->rwstate incorrectly (so that we have
2868 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2869 * wbio *are* the same, this test works around that bug; so it
2870 * might be safer to keep it.
2872 return (SSL_ERROR_WANT_WRITE
);
2873 else if (BIO_should_io_special(bio
)) {
2874 reason
= BIO_get_retry_reason(bio
);
2875 if (reason
== BIO_RR_CONNECT
)
2876 return (SSL_ERROR_WANT_CONNECT
);
2877 else if (reason
== BIO_RR_ACCEPT
)
2878 return (SSL_ERROR_WANT_ACCEPT
);
2880 return (SSL_ERROR_SYSCALL
); /* unknown */
2884 if ((i
< 0) && SSL_want_write(s
)) {
2885 bio
= SSL_get_wbio(s
);
2886 if (BIO_should_write(bio
))
2887 return (SSL_ERROR_WANT_WRITE
);
2888 else if (BIO_should_read(bio
))
2890 * See above (SSL_want_read(s) with BIO_should_write(bio))
2892 return (SSL_ERROR_WANT_READ
);
2893 else if (BIO_should_io_special(bio
)) {
2894 reason
= BIO_get_retry_reason(bio
);
2895 if (reason
== BIO_RR_CONNECT
)
2896 return (SSL_ERROR_WANT_CONNECT
);
2897 else if (reason
== BIO_RR_ACCEPT
)
2898 return (SSL_ERROR_WANT_ACCEPT
);
2900 return (SSL_ERROR_SYSCALL
);
2903 if ((i
< 0) && SSL_want_x509_lookup(s
)) {
2904 return (SSL_ERROR_WANT_X509_LOOKUP
);
2906 if ((i
< 0) && SSL_want_async(s
)) {
2907 return SSL_ERROR_WANT_ASYNC
;
2911 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
2912 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
2913 return (SSL_ERROR_ZERO_RETURN
);
2915 return (SSL_ERROR_SYSCALL
);
2918 static int ssl_do_handshake_intern(void *vargs
)
2920 struct ssl_async_args
*args
;
2923 args
= (struct ssl_async_args
*)vargs
;
2926 return s
->handshake_func(s
);
2929 int SSL_do_handshake(SSL
*s
)
2933 if (s
->handshake_func
== NULL
) {
2934 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
2938 s
->method
->ssl_renegotiate_check(s
);
2940 if (SSL_in_init(s
) || SSL_in_before(s
)) {
2941 if((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2942 struct ssl_async_args args
;
2946 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
2948 ret
= s
->handshake_func(s
);
2954 void SSL_set_accept_state(SSL
*s
)
2958 ossl_statem_clear(s
);
2959 s
->handshake_func
= s
->method
->ssl_accept
;
2963 void SSL_set_connect_state(SSL
*s
)
2967 ossl_statem_clear(s
);
2968 s
->handshake_func
= s
->method
->ssl_connect
;
2972 int ssl_undefined_function(SSL
*s
)
2974 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2978 int ssl_undefined_void_function(void)
2980 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
2981 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2985 int ssl_undefined_const_function(const SSL
*s
)
2990 SSL_METHOD
*ssl_bad_method(int ver
)
2992 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2996 const char *SSL_get_version(const SSL
*s
)
2998 if (s
->version
== TLS1_2_VERSION
)
3000 else if (s
->version
== TLS1_1_VERSION
)
3002 else if (s
->version
== TLS1_VERSION
)
3004 else if (s
->version
== SSL3_VERSION
)
3006 else if (s
->version
== DTLS1_BAD_VER
)
3007 return ("DTLSv0.9");
3008 else if (s
->version
== DTLS1_VERSION
)
3010 else if (s
->version
== DTLS1_2_VERSION
)
3011 return ("DTLSv1.2");
3016 SSL
*SSL_dup(SSL
*s
)
3018 STACK_OF(X509_NAME
) *sk
;
3023 /* If we're not quiescent, just up_ref! */
3024 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3025 CRYPTO_add(&s
->references
, 1, CRYPTO_LOCK_SSL
);
3030 * Otherwise, copy configuration state, and session if set.
3032 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3035 if (s
->session
!= NULL
) {
3037 * Arranges to share the same session via up_ref. This "copies"
3038 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3040 if (!SSL_copy_session_id(ret
, s
))
3044 * No session has been established yet, so we have to expect that
3045 * s->cert or ret->cert will be changed later -- they should not both
3046 * point to the same object, and thus we can't use
3047 * SSL_copy_session_id.
3049 if (!SSL_set_ssl_method(ret
, s
->method
))
3052 if (s
->cert
!= NULL
) {
3053 ssl_cert_free(ret
->cert
);
3054 ret
->cert
= ssl_cert_dup(s
->cert
);
3055 if (ret
->cert
== NULL
)
3059 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
, s
->sid_ctx_length
))
3063 ssl_dane_dup(ret
, s
);
3064 ret
->version
= s
->version
;
3065 ret
->options
= s
->options
;
3066 ret
->mode
= s
->mode
;
3067 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3068 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3069 ret
->msg_callback
= s
->msg_callback
;
3070 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3071 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3072 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3073 ret
->generate_session_id
= s
->generate_session_id
;
3075 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3077 /* copy app data, a little dangerous perhaps */
3078 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3081 /* setup rbio, and wbio */
3082 if (s
->rbio
!= NULL
) {
3083 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3086 if (s
->wbio
!= NULL
) {
3087 if (s
->wbio
!= s
->rbio
) {
3088 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3091 ret
->wbio
= ret
->rbio
;
3094 ret
->server
= s
->server
;
3095 if (s
->handshake_func
) {
3097 SSL_set_accept_state(ret
);
3099 SSL_set_connect_state(ret
);
3101 ret
->shutdown
= s
->shutdown
;
3104 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3105 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3107 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3109 /* dup the cipher_list and cipher_list_by_id stacks */
3110 if (s
->cipher_list
!= NULL
) {
3111 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3114 if (s
->cipher_list_by_id
!= NULL
)
3115 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3119 /* Dup the client_CA list */
3120 if (s
->client_CA
!= NULL
) {
3121 if ((sk
= sk_X509_NAME_dup(s
->client_CA
)) == NULL
)
3123 ret
->client_CA
= sk
;
3124 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3125 xn
= sk_X509_NAME_value(sk
, i
);
3126 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3139 void ssl_clear_cipher_ctx(SSL
*s
)
3141 if (s
->enc_read_ctx
!= NULL
) {
3142 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3143 s
->enc_read_ctx
= NULL
;
3145 if (s
->enc_write_ctx
!= NULL
) {
3146 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3147 s
->enc_write_ctx
= NULL
;
3149 #ifndef OPENSSL_NO_COMP
3150 COMP_CTX_free(s
->expand
);
3152 COMP_CTX_free(s
->compress
);
3157 X509
*SSL_get_certificate(const SSL
*s
)
3159 if (s
->cert
!= NULL
)
3160 return (s
->cert
->key
->x509
);
3165 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3167 if (s
->cert
!= NULL
)
3168 return (s
->cert
->key
->privatekey
);
3173 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3175 if (ctx
->cert
!= NULL
)
3176 return ctx
->cert
->key
->x509
;
3181 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3183 if (ctx
->cert
!= NULL
)
3184 return ctx
->cert
->key
->privatekey
;
3189 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3191 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3192 return (s
->session
->cipher
);
3196 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3198 #ifndef OPENSSL_NO_COMP
3199 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3205 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3207 #ifndef OPENSSL_NO_COMP
3208 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3214 int ssl_init_wbio_buffer(SSL
*s
, int push
)
3218 if (s
->bbio
== NULL
) {
3219 bbio
= BIO_new(BIO_f_buffer());
3225 if (s
->bbio
== s
->wbio
)
3226 s
->wbio
= BIO_pop(s
->wbio
);
3228 (void)BIO_reset(bbio
);
3229 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3230 if (!BIO_set_read_buffer_size(bbio
, 1)) {
3231 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3235 if (s
->wbio
!= bbio
)
3236 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3238 if (s
->wbio
== bbio
)
3239 s
->wbio
= BIO_pop(bbio
);
3244 void ssl_free_wbio_buffer(SSL
*s
)
3246 /* callers ensure s is never null */
3247 if (s
->bbio
== NULL
)
3250 if (s
->bbio
== s
->wbio
) {
3251 /* remove buffering */
3252 s
->wbio
= BIO_pop(s
->wbio
);
3255 * not the usual REF_DEBUG, but this avoids
3256 * adding one more preprocessor symbol
3258 assert(s
->wbio
!= NULL
);
3265 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3267 ctx
->quiet_shutdown
= mode
;
3270 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3272 return (ctx
->quiet_shutdown
);
3275 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3277 s
->quiet_shutdown
= mode
;
3280 int SSL_get_quiet_shutdown(const SSL
*s
)
3282 return (s
->quiet_shutdown
);
3285 void SSL_set_shutdown(SSL
*s
, int mode
)
3290 int SSL_get_shutdown(const SSL
*s
)
3292 return (s
->shutdown
);
3295 int SSL_version(const SSL
*s
)
3297 return (s
->version
);
3300 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3305 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3308 if (ssl
->ctx
== ctx
)
3311 ctx
= ssl
->initial_ctx
;
3312 new_cert
= ssl_cert_dup(ctx
->cert
);
3313 if (new_cert
== NULL
) {
3316 ssl_cert_free(ssl
->cert
);
3317 ssl
->cert
= new_cert
;
3320 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3321 * so setter APIs must prevent invalid lengths from entering the system.
3323 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3326 * If the session ID context matches that of the parent SSL_CTX,
3327 * inherit it from the new SSL_CTX as well. If however the context does
3328 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3329 * leave it unchanged.
3331 if ((ssl
->ctx
!= NULL
) &&
3332 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3333 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3334 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3335 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3338 CRYPTO_add(&ctx
->references
, 1, CRYPTO_LOCK_SSL_CTX
);
3339 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3345 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3347 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3350 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3352 X509_LOOKUP
*lookup
;
3354 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3357 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3359 /* Clear any errors if the default directory does not exist */
3365 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3367 X509_LOOKUP
*lookup
;
3369 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3373 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3375 /* Clear any errors if the default file does not exist */
3381 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3384 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3387 void SSL_set_info_callback(SSL
*ssl
,
3388 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3390 ssl
->info_callback
= cb
;
3394 * One compiler (Diab DCC) doesn't like argument names in returned function
3397 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3400 return ssl
->info_callback
;
3403 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3405 ssl
->verify_result
= arg
;
3408 long SSL_get_verify_result(const SSL
*ssl
)
3410 return (ssl
->verify_result
);
3413 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3416 return sizeof(ssl
->s3
->client_random
);
3417 if (outlen
> sizeof(ssl
->s3
->client_random
))
3418 outlen
= sizeof(ssl
->s3
->client_random
);
3419 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3423 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3426 return sizeof(ssl
->s3
->server_random
);
3427 if (outlen
> sizeof(ssl
->s3
->server_random
))
3428 outlen
= sizeof(ssl
->s3
->server_random
);
3429 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3433 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3434 unsigned char *out
, size_t outlen
)
3436 if (session
->master_key_length
< 0) {
3437 /* Should never happen */
3441 return session
->master_key_length
;
3442 if (outlen
> (size_t)session
->master_key_length
)
3443 outlen
= session
->master_key_length
;
3444 memcpy(out
, session
->master_key
, outlen
);
3448 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3450 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3453 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3455 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3458 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3460 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3463 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3465 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3473 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3475 return (ctx
->cert_store
);
3478 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3480 X509_STORE_free(ctx
->cert_store
);
3481 ctx
->cert_store
= store
;
3484 int SSL_want(const SSL
*s
)
3486 return (s
->rwstate
);
3490 * \brief Set the callback for generating temporary DH keys.
3491 * \param ctx the SSL context.
3492 * \param dh the callback
3495 #ifndef OPENSSL_NO_DH
3496 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3497 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3500 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3503 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3506 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3510 #ifndef OPENSSL_NO_PSK
3511 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3513 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3514 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
,
3515 SSL_R_DATA_LENGTH_TOO_LONG
);
3518 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3519 if (identity_hint
!= NULL
) {
3520 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3521 if (ctx
->cert
->psk_identity_hint
== NULL
)
3524 ctx
->cert
->psk_identity_hint
= NULL
;
3528 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3533 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3534 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3537 OPENSSL_free(s
->cert
->psk_identity_hint
);
3538 if (identity_hint
!= NULL
) {
3539 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3540 if (s
->cert
->psk_identity_hint
== NULL
)
3543 s
->cert
->psk_identity_hint
= NULL
;
3547 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3549 if (s
== NULL
|| s
->session
== NULL
)
3551 return (s
->session
->psk_identity_hint
);
3554 const char *SSL_get_psk_identity(const SSL
*s
)
3556 if (s
== NULL
|| s
->session
== NULL
)
3558 return (s
->session
->psk_identity
);
3561 void SSL_set_psk_client_callback(SSL
*s
,
3562 unsigned int (*cb
) (SSL
*ssl
,
3571 s
->psk_client_callback
= cb
;
3574 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
,
3575 unsigned int (*cb
) (SSL
*ssl
,
3584 ctx
->psk_client_callback
= cb
;
3587 void SSL_set_psk_server_callback(SSL
*s
,
3588 unsigned int (*cb
) (SSL
*ssl
,
3589 const char *identity
,
3594 s
->psk_server_callback
= cb
;
3597 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
,
3598 unsigned int (*cb
) (SSL
*ssl
,
3599 const char *identity
,
3604 ctx
->psk_server_callback
= cb
;
3608 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3609 void (*cb
) (int write_p
, int version
,
3610 int content_type
, const void *buf
,
3611 size_t len
, SSL
*ssl
, void *arg
))
3613 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3616 void SSL_set_msg_callback(SSL
*ssl
,
3617 void (*cb
) (int write_p
, int version
,
3618 int content_type
, const void *buf
,
3619 size_t len
, SSL
*ssl
, void *arg
))
3621 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3624 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3625 int (*cb
) (SSL
*ssl
,
3629 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3630 (void (*)(void))cb
);
3633 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3634 int (*cb
) (SSL
*ssl
,
3635 int is_forward_secure
))
3637 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3638 (void (*)(void))cb
);
3642 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3643 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3644 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3648 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3650 ssl_clear_hash_ctx(hash
);
3651 *hash
= EVP_MD_CTX_new();
3652 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3653 EVP_MD_CTX_free(*hash
);
3660 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3664 EVP_MD_CTX_free(*hash
);
3668 /* Retrieve handshake hashes */
3669 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, int outlen
)
3671 EVP_MD_CTX
*ctx
= NULL
;
3672 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3673 int ret
= EVP_MD_CTX_size(hdgst
);
3674 if (ret
< 0 || ret
> outlen
) {
3678 ctx
= EVP_MD_CTX_new();
3683 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3684 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3687 EVP_MD_CTX_free(ctx
);
3691 int SSL_session_reused(SSL
*s
)
3696 int SSL_is_server(SSL
*s
)
3701 #if OPENSSL_API_COMPAT < 0x10100000L
3702 void SSL_set_debug(SSL
*s
, int debug
)
3704 /* Old function was do-nothing anyway... */
3711 void SSL_set_security_level(SSL
*s
, int level
)
3713 s
->cert
->sec_level
= level
;
3716 int SSL_get_security_level(const SSL
*s
)
3718 return s
->cert
->sec_level
;
3721 void SSL_set_security_callback(SSL
*s
,
3722 int (*cb
) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3723 int bits
, int nid
, void *other
,
3726 s
->cert
->sec_cb
= cb
;
3729 int (*SSL_get_security_callback(const SSL
*s
)) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3731 void *other
, void *ex
) {
3732 return s
->cert
->sec_cb
;
3735 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
3737 s
->cert
->sec_ex
= ex
;
3740 void *SSL_get0_security_ex_data(const SSL
*s
)
3742 return s
->cert
->sec_ex
;
3745 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
3747 ctx
->cert
->sec_level
= level
;
3750 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
3752 return ctx
->cert
->sec_level
;
3755 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
3756 int (*cb
) (SSL
*s
, SSL_CTX
*ctx
, int op
,
3757 int bits
, int nid
, void *other
,
3760 ctx
->cert
->sec_cb
= cb
;
3763 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (SSL
*s
,
3769 return ctx
->cert
->sec_cb
;
3772 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
3774 ctx
->cert
->sec_ex
= ex
;
3777 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
3779 return ctx
->cert
->sec_ex
;
3784 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3785 * can return unsigned long, instead of the generic long return value from the
3786 * control interface.
3788 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
3790 return ctx
->options
;
3792 unsigned long SSL_get_options(const SSL
* s
)
3796 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
3798 return ctx
->options
|= op
;
3800 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
3802 return s
->options
|= op
;
3804 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
3806 return ctx
->options
&= ~op
;
3808 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
3810 return s
->options
&= ~op
;
3813 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
3815 return s
->verified_chain
;
3818 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
3820 #ifndef OPENSSL_NO_CT
3823 * Moves SCTs from the |src| stack to the |dst| stack.
3824 * The source of each SCT will be set to |origin|.
3825 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3827 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3829 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
, sct_source_t origin
)
3835 *dst
= sk_SCT_new_null();
3837 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
3842 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
3843 if (SCT_set_source(sct
, origin
) != 1)
3846 if (sk_SCT_push(*dst
, sct
) <= 0)
3854 sk_SCT_push(src
, sct
); /* Put the SCT back */
3859 * Look for data collected during ServerHello and parse if found.
3860 * Return 1 on success, 0 on failure.
3862 static int ct_extract_tls_extension_scts(SSL
*s
)
3864 int scts_extracted
= 0;
3866 if (s
->tlsext_scts
!= NULL
) {
3867 const unsigned char *p
= s
->tlsext_scts
;
3868 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->tlsext_scts_len
);
3870 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
3872 SCT_LIST_free(scts
);
3875 return scts_extracted
;
3879 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3880 * contains an SCT X509 extension. They will be stored in |s->scts|.
3882 * - The number of SCTs extracted, assuming an OCSP response exists.
3883 * - 0 if no OCSP response exists or it contains no SCTs.
3884 * - A negative integer if an error occurs.
3886 static int ct_extract_ocsp_response_scts(SSL
*s
)
3888 int scts_extracted
= 0;
3889 const unsigned char *p
;
3890 OCSP_BASICRESP
*br
= NULL
;
3891 OCSP_RESPONSE
*rsp
= NULL
;
3892 STACK_OF(SCT
) *scts
= NULL
;
3895 if (s
->tlsext_ocsp_resp
== NULL
|| s
->tlsext_ocsp_resplen
== 0)
3898 p
= s
->tlsext_ocsp_resp
;
3899 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, s
->tlsext_ocsp_resplen
);
3903 br
= OCSP_response_get1_basic(rsp
);
3907 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
3908 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
3913 scts
= OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
3914 scts_extracted
= ct_move_scts(&s
->scts
, scts
,
3915 SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
3916 if (scts_extracted
< 0)
3920 SCT_LIST_free(scts
);
3921 OCSP_BASICRESP_free(br
);
3922 OCSP_RESPONSE_free(rsp
);
3923 return scts_extracted
;
3927 * Attempts to extract SCTs from the peer certificate.
3928 * Return the number of SCTs extracted, or a negative integer if an error
3931 static int ct_extract_x509v3_extension_scts(SSL
*s
)
3933 int scts_extracted
= 0;
3934 X509
*cert
= SSL_get_peer_certificate(s
);
3937 STACK_OF(SCT
) *scts
=
3938 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
3941 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
3943 SCT_LIST_free(scts
);
3947 return scts_extracted
;
3951 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3952 * response (if it exists) and X509v3 extensions in the certificate.
3953 * Returns NULL if an error occurs.
3955 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
3957 if (!s
->scts_parsed
) {
3958 if (ct_extract_tls_extension_scts(s
) < 0 ||
3959 ct_extract_ocsp_response_scts(s
) < 0 ||
3960 ct_extract_x509v3_extension_scts(s
) < 0)
3970 int SSL_set_ct_validation_callback(SSL
*s
, ct_validation_cb callback
, void *arg
)
3975 * Since code exists that uses the custom extension handler for CT, look
3976 * for this and throw an error if they have already registered to use CT.
3978 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
3979 TLSEXT_TYPE_signed_certificate_timestamp
)) {
3980 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
3981 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
3985 s
->ct_validation_callback
= callback
;
3986 s
->ct_validation_callback_arg
= arg
;
3988 if (callback
!= NULL
) {
3989 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
3990 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
3999 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
, ct_validation_cb callback
,
4005 * Since code exists that uses the custom extension handler for CT, look for
4006 * this and throw an error if they have already registered to use CT.
4008 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4009 TLSEXT_TYPE_signed_certificate_timestamp
)) {
4010 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4011 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4015 ctx
->ct_validation_callback
= callback
;
4016 ctx
->ct_validation_callback_arg
= arg
;
4022 ct_validation_cb
SSL_get_ct_validation_callback(const SSL
*s
)
4024 return s
->ct_validation_callback
;
4027 ct_validation_cb
SSL_CTX_get_ct_validation_callback(const SSL_CTX
*ctx
)
4029 return ctx
->ct_validation_callback
;
4032 int ssl_validate_ct(SSL
*s
)
4035 X509
*cert
= SSL_get_peer_certificate(s
);
4036 X509
*issuer
= NULL
;
4037 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4038 const STACK_OF(SCT
) *scts
;
4040 /* If no callback is set, attempt no validation - just return success */
4041 if (s
->ct_validation_callback
== NULL
)
4045 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
4049 if (s
->verified_chain
!= NULL
&& sk_X509_num(s
->verified_chain
) > 1)
4050 issuer
= sk_X509_value(s
->verified_chain
, 1);
4052 ctx
= CT_POLICY_EVAL_CTX_new();
4054 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4058 CT_POLICY_EVAL_CTX_set0_cert(ctx
, cert
);
4059 CT_POLICY_EVAL_CTX_set0_issuer(ctx
, issuer
);
4060 CT_POLICY_EVAL_CTX_set0_log_store(ctx
, s
->ctx
->ctlog_store
);
4062 scts
= SSL_get0_peer_scts(s
);
4064 if (SCT_LIST_validate(scts
, ctx
) != 1) {
4065 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4069 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4071 ret
= 0; /* This function returns 0 on failure */
4074 CT_POLICY_EVAL_CTX_free(ctx
);
4079 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4081 int ret
= CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4083 /* Clear any errors if the default file does not exist */
4088 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4090 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);