2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 /* We need to use some engine deprecated APIs */
13 #define OPENSSL_SUPPRESS_DEPRECATED
16 #include "ssl_local.h"
18 #include <openssl/objects.h>
19 #include <openssl/x509v3.h>
20 #include <openssl/rand.h>
21 #include <openssl/ocsp.h>
22 #include <openssl/dh.h>
23 #include <openssl/engine.h>
24 #include <openssl/async.h>
25 #include <openssl/ct.h>
26 #include <openssl/trace.h>
27 #include "internal/cryptlib.h"
28 #include "internal/refcount.h"
29 #include "internal/ktls.h"
32 DEFINE_STACK_OF(X509_NAME
)
33 DEFINE_STACK_OF_CONST(SSL_CIPHER
)
34 DEFINE_STACK_OF(X509_EXTENSION
)
35 DEFINE_STACK_OF(OCSP_RESPID
)
36 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE
)
39 static int ssl_undefined_function_1(SSL
*ssl
, SSL3_RECORD
*r
, size_t s
, int t
,
40 SSL_MAC_BUF
*mac
, size_t macsize
)
42 return ssl_undefined_function(ssl
);
45 static int ssl_undefined_function_2(SSL
*ssl
, SSL3_RECORD
*r
, unsigned char *s
,
48 return ssl_undefined_function(ssl
);
51 static int ssl_undefined_function_3(SSL
*ssl
, unsigned char *r
,
52 unsigned char *s
, size_t t
, size_t *u
)
54 return ssl_undefined_function(ssl
);
57 static int ssl_undefined_function_4(SSL
*ssl
, int r
)
59 return ssl_undefined_function(ssl
);
62 static size_t ssl_undefined_function_5(SSL
*ssl
, const char *r
, size_t s
,
65 return ssl_undefined_function(ssl
);
68 static int ssl_undefined_function_6(int r
)
70 return ssl_undefined_function(NULL
);
73 static int ssl_undefined_function_7(SSL
*ssl
, unsigned char *r
, size_t s
,
74 const char *t
, size_t u
,
75 const unsigned char *v
, size_t w
, int x
)
77 return ssl_undefined_function(ssl
);
80 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
81 ssl_undefined_function_1
,
82 ssl_undefined_function_2
,
83 ssl_undefined_function
,
84 ssl_undefined_function_3
,
85 ssl_undefined_function_4
,
86 ssl_undefined_function_5
,
87 NULL
, /* client_finished_label */
88 0, /* client_finished_label_len */
89 NULL
, /* server_finished_label */
90 0, /* server_finished_label_len */
91 ssl_undefined_function_6
,
92 ssl_undefined_function_7
,
95 struct ssl_async_args
{
99 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
101 int (*func_read
) (SSL
*, void *, size_t, size_t *);
102 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
103 int (*func_other
) (SSL
*);
107 static const struct {
113 DANETLS_MATCHING_FULL
, 0, NID_undef
116 DANETLS_MATCHING_2256
, 1, NID_sha256
119 DANETLS_MATCHING_2512
, 2, NID_sha512
123 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
125 const EVP_MD
**mdevp
;
127 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
128 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
131 if (dctx
->mdevp
!= NULL
)
134 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
135 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
137 if (mdord
== NULL
|| mdevp
== NULL
) {
140 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
144 /* Install default entries */
145 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
148 if (dane_mds
[i
].nid
== NID_undef
||
149 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
151 mdevp
[dane_mds
[i
].mtype
] = md
;
152 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
162 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
164 OPENSSL_free(dctx
->mdevp
);
167 OPENSSL_free(dctx
->mdord
);
172 static void tlsa_free(danetls_record
*t
)
176 OPENSSL_free(t
->data
);
177 EVP_PKEY_free(t
->spki
);
181 static void dane_final(SSL_DANE
*dane
)
183 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
186 sk_X509_pop_free(dane
->certs
, X509_free
);
189 X509_free(dane
->mcert
);
197 * dane_copy - Copy dane configuration, sans verification state.
199 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
204 if (!DANETLS_ENABLED(&from
->dane
))
207 num
= sk_danetls_record_num(from
->dane
.trecs
);
208 dane_final(&to
->dane
);
209 to
->dane
.flags
= from
->dane
.flags
;
210 to
->dane
.dctx
= &to
->ctx
->dane
;
211 to
->dane
.trecs
= sk_danetls_record_new_reserve(NULL
, num
);
213 if (to
->dane
.trecs
== NULL
) {
214 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
218 for (i
= 0; i
< num
; ++i
) {
219 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
221 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
222 t
->data
, t
->dlen
) <= 0)
228 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
229 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
233 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
234 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
238 if (mtype
> dctx
->mdmax
) {
239 const EVP_MD
**mdevp
;
241 int n
= ((int)mtype
) + 1;
243 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
245 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
250 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
252 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
257 /* Zero-fill any gaps */
258 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
266 dctx
->mdevp
[mtype
] = md
;
267 /* Coerce ordinal of disabled matching types to 0 */
268 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
273 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
275 if (mtype
> dane
->dctx
->mdmax
)
277 return dane
->dctx
->mdevp
[mtype
];
280 static int dane_tlsa_add(SSL_DANE
*dane
,
283 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
286 const EVP_MD
*md
= NULL
;
287 int ilen
= (int)dlen
;
291 if (dane
->trecs
== NULL
) {
292 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
296 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
297 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
301 if (usage
> DANETLS_USAGE_LAST
) {
302 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
306 if (selector
> DANETLS_SELECTOR_LAST
) {
307 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
311 if (mtype
!= DANETLS_MATCHING_FULL
) {
312 md
= tlsa_md_get(dane
, mtype
);
314 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
319 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
320 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
324 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
328 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
329 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
334 t
->selector
= selector
;
336 t
->data
= OPENSSL_malloc(dlen
);
337 if (t
->data
== NULL
) {
339 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
342 memcpy(t
->data
, data
, dlen
);
345 /* Validate and cache full certificate or public key */
346 if (mtype
== DANETLS_MATCHING_FULL
) {
347 const unsigned char *p
= data
;
349 EVP_PKEY
*pkey
= NULL
;
352 case DANETLS_SELECTOR_CERT
:
353 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
354 dlen
!= (size_t)(p
- data
)) {
356 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
359 if (X509_get0_pubkey(cert
) == NULL
) {
361 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
365 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
371 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
372 * records that contain full certificates of trust-anchors that are
373 * not present in the wire chain. For usage PKIX-TA(0), we augment
374 * the chain with untrusted Full(0) certificates from DNS, in case
375 * they are missing from the chain.
377 if ((dane
->certs
== NULL
&&
378 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
379 !sk_X509_push(dane
->certs
, cert
)) {
380 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
387 case DANETLS_SELECTOR_SPKI
:
388 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
389 dlen
!= (size_t)(p
- data
)) {
391 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
396 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
397 * records that contain full bare keys of trust-anchors that are
398 * not present in the wire chain.
400 if (usage
== DANETLS_USAGE_DANE_TA
)
409 * Find the right insertion point for the new record.
411 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
412 * they can be processed first, as they require no chain building, and no
413 * expiration or hostname checks. Because DANE-EE(3) is numerically
414 * largest, this is accomplished via descending sort by "usage".
416 * We also sort in descending order by matching ordinal to simplify
417 * the implementation of digest agility in the verification code.
419 * The choice of order for the selector is not significant, so we
420 * use the same descending order for consistency.
422 num
= sk_danetls_record_num(dane
->trecs
);
423 for (i
= 0; i
< num
; ++i
) {
424 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
426 if (rec
->usage
> usage
)
428 if (rec
->usage
< usage
)
430 if (rec
->selector
> selector
)
432 if (rec
->selector
< selector
)
434 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
439 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
441 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
444 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
450 * Return 0 if there is only one version configured and it was disabled
451 * at configure time. Return 1 otherwise.
453 static int ssl_check_allowed_versions(int min_version
, int max_version
)
455 int minisdtls
= 0, maxisdtls
= 0;
457 /* Figure out if we're doing DTLS versions or TLS versions */
458 if (min_version
== DTLS1_BAD_VER
459 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
461 if (max_version
== DTLS1_BAD_VER
462 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
464 /* A wildcard version of 0 could be DTLS or TLS. */
465 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
466 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
467 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
471 if (minisdtls
|| maxisdtls
) {
472 /* Do DTLS version checks. */
473 if (min_version
== 0)
474 /* Ignore DTLS1_BAD_VER */
475 min_version
= DTLS1_VERSION
;
476 if (max_version
== 0)
477 max_version
= DTLS1_2_VERSION
;
478 #ifdef OPENSSL_NO_DTLS1_2
479 if (max_version
== DTLS1_2_VERSION
)
480 max_version
= DTLS1_VERSION
;
482 #ifdef OPENSSL_NO_DTLS1
483 if (min_version
== DTLS1_VERSION
)
484 min_version
= DTLS1_2_VERSION
;
486 /* Done massaging versions; do the check. */
488 #ifdef OPENSSL_NO_DTLS1
489 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
490 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
492 #ifdef OPENSSL_NO_DTLS1_2
493 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
494 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
499 /* Regular TLS version checks. */
500 if (min_version
== 0)
501 min_version
= SSL3_VERSION
;
502 if (max_version
== 0)
503 max_version
= TLS1_3_VERSION
;
504 #ifdef OPENSSL_NO_TLS1_3
505 if (max_version
== TLS1_3_VERSION
)
506 max_version
= TLS1_2_VERSION
;
508 #ifdef OPENSSL_NO_TLS1_2
509 if (max_version
== TLS1_2_VERSION
)
510 max_version
= TLS1_1_VERSION
;
512 #ifdef OPENSSL_NO_TLS1_1
513 if (max_version
== TLS1_1_VERSION
)
514 max_version
= TLS1_VERSION
;
516 #ifdef OPENSSL_NO_TLS1
517 if (max_version
== TLS1_VERSION
)
518 max_version
= SSL3_VERSION
;
520 #ifdef OPENSSL_NO_SSL3
521 if (min_version
== SSL3_VERSION
)
522 min_version
= TLS1_VERSION
;
524 #ifdef OPENSSL_NO_TLS1
525 if (min_version
== TLS1_VERSION
)
526 min_version
= TLS1_1_VERSION
;
528 #ifdef OPENSSL_NO_TLS1_1
529 if (min_version
== TLS1_1_VERSION
)
530 min_version
= TLS1_2_VERSION
;
532 #ifdef OPENSSL_NO_TLS1_2
533 if (min_version
== TLS1_2_VERSION
)
534 min_version
= TLS1_3_VERSION
;
536 /* Done massaging versions; do the check. */
538 #ifdef OPENSSL_NO_SSL3
539 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
541 #ifdef OPENSSL_NO_TLS1
542 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
544 #ifdef OPENSSL_NO_TLS1_1
545 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
547 #ifdef OPENSSL_NO_TLS1_2
548 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
550 #ifdef OPENSSL_NO_TLS1_3
551 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
559 static void clear_ciphers(SSL
*s
)
561 /* clear the current cipher */
562 ssl_clear_cipher_ctx(s
);
563 ssl_clear_hash_ctx(&s
->read_hash
);
564 ssl_clear_hash_ctx(&s
->write_hash
);
567 int SSL_clear(SSL
*s
)
569 if (s
->method
== NULL
) {
570 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
574 if (ssl_clear_bad_session(s
)) {
575 SSL_SESSION_free(s
->session
);
578 SSL_SESSION_free(s
->psksession
);
579 s
->psksession
= NULL
;
580 OPENSSL_free(s
->psksession_id
);
581 s
->psksession_id
= NULL
;
582 s
->psksession_id_len
= 0;
583 s
->hello_retry_request
= 0;
590 if (s
->renegotiate
) {
591 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
595 ossl_statem_clear(s
);
597 s
->version
= s
->method
->version
;
598 s
->client_version
= s
->version
;
599 s
->rwstate
= SSL_NOTHING
;
601 BUF_MEM_free(s
->init_buf
);
606 s
->key_update
= SSL_KEY_UPDATE_NONE
;
608 EVP_MD_CTX_free(s
->pha_dgst
);
611 /* Reset DANE verification result state */
614 X509_free(s
->dane
.mcert
);
615 s
->dane
.mcert
= NULL
;
616 s
->dane
.mtlsa
= NULL
;
618 /* Clear the verification result peername */
619 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
621 /* Clear any shared connection state */
622 OPENSSL_free(s
->shared_sigalgs
);
623 s
->shared_sigalgs
= NULL
;
624 s
->shared_sigalgslen
= 0;
627 * Check to see if we were changed into a different method, if so, revert
630 if (s
->method
!= s
->ctx
->method
) {
631 s
->method
->ssl_free(s
);
632 s
->method
= s
->ctx
->method
;
633 if (!s
->method
->ssl_new(s
))
636 if (!s
->method
->ssl_clear(s
))
640 RECORD_LAYER_clear(&s
->rlayer
);
645 #ifndef OPENSSL_NO_DEPRECATED_3_0
646 /** Used to change an SSL_CTXs default SSL method type */
647 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
649 STACK_OF(SSL_CIPHER
) *sk
;
653 if (!SSL_CTX_set_ciphersuites(ctx
, OSSL_default_ciphersuites())) {
654 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
657 sk
= ssl_create_cipher_list(ctx
->method
,
658 ctx
->tls13_ciphersuites
,
660 &(ctx
->cipher_list_by_id
),
661 OSSL_default_cipher_list(), ctx
->cert
);
662 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
670 SSL
*SSL_new(SSL_CTX
*ctx
)
675 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
678 if (ctx
->method
== NULL
) {
679 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
683 s
= OPENSSL_zalloc(sizeof(*s
));
688 s
->lock
= CRYPTO_THREAD_lock_new();
689 if (s
->lock
== NULL
) {
695 RECORD_LAYER_init(&s
->rlayer
, s
);
697 s
->options
= ctx
->options
;
698 s
->dane
.flags
= ctx
->dane
.flags
;
699 s
->min_proto_version
= ctx
->min_proto_version
;
700 s
->max_proto_version
= ctx
->max_proto_version
;
702 s
->max_cert_list
= ctx
->max_cert_list
;
703 s
->max_early_data
= ctx
->max_early_data
;
704 s
->recv_max_early_data
= ctx
->recv_max_early_data
;
705 s
->num_tickets
= ctx
->num_tickets
;
706 s
->pha_enabled
= ctx
->pha_enabled
;
708 /* Shallow copy of the ciphersuites stack */
709 s
->tls13_ciphersuites
= sk_SSL_CIPHER_dup(ctx
->tls13_ciphersuites
);
710 if (s
->tls13_ciphersuites
== NULL
)
714 * Earlier library versions used to copy the pointer to the CERT, not
715 * its contents; only when setting new parameters for the per-SSL
716 * copy, ssl_cert_new would be called (and the direct reference to
717 * the per-SSL_CTX settings would be lost, but those still were
718 * indirectly accessed for various purposes, and for that reason they
719 * used to be known as s->ctx->default_cert). Now we don't look at the
720 * SSL_CTX's CERT after having duplicated it once.
722 s
->cert
= ssl_cert_dup(ctx
->cert
);
726 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
727 s
->msg_callback
= ctx
->msg_callback
;
728 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
729 s
->verify_mode
= ctx
->verify_mode
;
730 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
731 s
->record_padding_cb
= ctx
->record_padding_cb
;
732 s
->record_padding_arg
= ctx
->record_padding_arg
;
733 s
->block_padding
= ctx
->block_padding
;
734 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
735 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
737 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
738 s
->verify_callback
= ctx
->default_verify_callback
;
739 s
->generate_session_id
= ctx
->generate_session_id
;
741 s
->param
= X509_VERIFY_PARAM_new();
742 if (s
->param
== NULL
)
744 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
745 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
747 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
748 s
->max_send_fragment
= ctx
->max_send_fragment
;
749 s
->split_send_fragment
= ctx
->split_send_fragment
;
750 s
->max_pipelines
= ctx
->max_pipelines
;
751 if (s
->max_pipelines
> 1)
752 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
753 if (ctx
->default_read_buf_len
> 0)
754 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
759 s
->ext
.debug_arg
= NULL
;
760 s
->ext
.ticket_expected
= 0;
761 s
->ext
.status_type
= ctx
->ext
.status_type
;
762 s
->ext
.status_expected
= 0;
763 s
->ext
.ocsp
.ids
= NULL
;
764 s
->ext
.ocsp
.exts
= NULL
;
765 s
->ext
.ocsp
.resp
= NULL
;
766 s
->ext
.ocsp
.resp_len
= 0;
768 s
->session_ctx
= ctx
;
769 #ifndef OPENSSL_NO_EC
770 if (ctx
->ext
.ecpointformats
) {
771 s
->ext
.ecpointformats
=
772 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
773 ctx
->ext
.ecpointformats_len
);
774 if (!s
->ext
.ecpointformats
)
776 s
->ext
.ecpointformats_len
=
777 ctx
->ext
.ecpointformats_len
;
780 if (ctx
->ext
.supportedgroups
) {
781 s
->ext
.supportedgroups
=
782 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
783 ctx
->ext
.supportedgroups_len
784 * sizeof(*ctx
->ext
.supportedgroups
));
785 if (!s
->ext
.supportedgroups
)
787 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
790 #ifndef OPENSSL_NO_NEXTPROTONEG
794 if (s
->ctx
->ext
.alpn
) {
795 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
796 if (s
->ext
.alpn
== NULL
)
798 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
799 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
802 s
->verified_chain
= NULL
;
803 s
->verify_result
= X509_V_OK
;
805 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
806 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
808 s
->method
= ctx
->method
;
810 s
->key_update
= SSL_KEY_UPDATE_NONE
;
812 s
->allow_early_data_cb
= ctx
->allow_early_data_cb
;
813 s
->allow_early_data_cb_data
= ctx
->allow_early_data_cb_data
;
815 if (!s
->method
->ssl_new(s
))
818 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
823 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
826 #ifndef OPENSSL_NO_PSK
827 s
->psk_client_callback
= ctx
->psk_client_callback
;
828 s
->psk_server_callback
= ctx
->psk_server_callback
;
830 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
831 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
833 s
->async_cb
= ctx
->async_cb
;
834 s
->async_cb_arg
= ctx
->async_cb_arg
;
838 #ifndef OPENSSL_NO_CT
839 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
840 ctx
->ct_validation_callback_arg
))
847 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
851 int SSL_is_dtls(const SSL
*s
)
853 return SSL_IS_DTLS(s
) ? 1 : 0;
856 int SSL_up_ref(SSL
*s
)
860 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
863 REF_PRINT_COUNT("SSL", s
);
864 REF_ASSERT_ISNT(i
< 2);
865 return ((i
> 1) ? 1 : 0);
868 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
869 unsigned int sid_ctx_len
)
871 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
872 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
873 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
876 ctx
->sid_ctx_length
= sid_ctx_len
;
877 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
882 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
883 unsigned int sid_ctx_len
)
885 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
886 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
887 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
890 ssl
->sid_ctx_length
= sid_ctx_len
;
891 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
896 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
898 CRYPTO_THREAD_write_lock(ctx
->lock
);
899 ctx
->generate_session_id
= cb
;
900 CRYPTO_THREAD_unlock(ctx
->lock
);
904 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
906 CRYPTO_THREAD_write_lock(ssl
->lock
);
907 ssl
->generate_session_id
= cb
;
908 CRYPTO_THREAD_unlock(ssl
->lock
);
912 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
916 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
917 * we can "construct" a session to give us the desired check - i.e. to
918 * find if there's a session in the hash table that would conflict with
919 * any new session built out of this id/id_len and the ssl_version in use
924 if (id_len
> sizeof(r
.session_id
))
927 r
.ssl_version
= ssl
->version
;
928 r
.session_id_length
= id_len
;
929 memcpy(r
.session_id
, id
, id_len
);
931 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
932 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
933 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
937 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
939 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
942 int SSL_set_purpose(SSL
*s
, int purpose
)
944 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
947 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
949 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
952 int SSL_set_trust(SSL
*s
, int trust
)
954 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
957 int SSL_set1_host(SSL
*s
, const char *hostname
)
959 /* If a hostname is provided and parses as an IP address,
960 * treat it as such. */
961 if (hostname
&& X509_VERIFY_PARAM_set1_ip_asc(s
->param
, hostname
) == 1)
964 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
967 int SSL_add1_host(SSL
*s
, const char *hostname
)
969 /* If a hostname is provided and parses as an IP address,
970 * treat it as such. */
973 ASN1_OCTET_STRING
*ip
;
976 ip
= a2i_IPADDRESS(hostname
);
978 /* We didn't want it; only to check if it *is* an IP address */
979 ASN1_OCTET_STRING_free(ip
);
981 old_ip
= X509_VERIFY_PARAM_get1_ip_asc(s
->param
);
985 /* There can be only one IP address */
989 return X509_VERIFY_PARAM_set1_ip_asc(s
->param
, hostname
);
993 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
996 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
998 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
1001 const char *SSL_get0_peername(SSL
*s
)
1003 return X509_VERIFY_PARAM_get0_peername(s
->param
);
1006 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
1008 return dane_ctx_enable(&ctx
->dane
);
1011 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
1013 unsigned long orig
= ctx
->dane
.flags
;
1015 ctx
->dane
.flags
|= flags
;
1019 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
1021 unsigned long orig
= ctx
->dane
.flags
;
1023 ctx
->dane
.flags
&= ~flags
;
1027 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
1029 SSL_DANE
*dane
= &s
->dane
;
1031 if (s
->ctx
->dane
.mdmax
== 0) {
1032 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
1035 if (dane
->trecs
!= NULL
) {
1036 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1041 * Default SNI name. This rejects empty names, while set1_host below
1042 * accepts them and disables host name checks. To avoid side-effects with
1043 * invalid input, set the SNI name first.
1045 if (s
->ext
.hostname
== NULL
) {
1046 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1047 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1052 /* Primary RFC6125 reference identifier */
1053 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1054 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1060 dane
->dctx
= &s
->ctx
->dane
;
1061 dane
->trecs
= sk_danetls_record_new_null();
1063 if (dane
->trecs
== NULL
) {
1064 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1070 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1072 unsigned long orig
= ssl
->dane
.flags
;
1074 ssl
->dane
.flags
|= flags
;
1078 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1080 unsigned long orig
= ssl
->dane
.flags
;
1082 ssl
->dane
.flags
&= ~flags
;
1086 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1088 SSL_DANE
*dane
= &s
->dane
;
1090 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1094 *mcert
= dane
->mcert
;
1096 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1101 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1102 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1104 SSL_DANE
*dane
= &s
->dane
;
1106 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1110 *usage
= dane
->mtlsa
->usage
;
1112 *selector
= dane
->mtlsa
->selector
;
1114 *mtype
= dane
->mtlsa
->mtype
;
1116 *data
= dane
->mtlsa
->data
;
1118 *dlen
= dane
->mtlsa
->dlen
;
1123 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1128 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1129 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1131 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1134 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1137 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1140 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1142 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1145 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1147 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1150 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1155 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1160 void SSL_certs_clear(SSL
*s
)
1162 ssl_cert_clear_certs(s
->cert
);
1165 void SSL_free(SSL
*s
)
1171 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1172 REF_PRINT_COUNT("SSL", s
);
1175 REF_ASSERT_ISNT(i
< 0);
1177 X509_VERIFY_PARAM_free(s
->param
);
1178 dane_final(&s
->dane
);
1179 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1181 RECORD_LAYER_release(&s
->rlayer
);
1183 /* Ignore return value */
1184 ssl_free_wbio_buffer(s
);
1186 BIO_free_all(s
->wbio
);
1188 BIO_free_all(s
->rbio
);
1191 BUF_MEM_free(s
->init_buf
);
1193 /* add extra stuff */
1194 sk_SSL_CIPHER_free(s
->cipher_list
);
1195 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1196 sk_SSL_CIPHER_free(s
->tls13_ciphersuites
);
1197 sk_SSL_CIPHER_free(s
->peer_ciphers
);
1199 /* Make the next call work :-) */
1200 if (s
->session
!= NULL
) {
1201 ssl_clear_bad_session(s
);
1202 SSL_SESSION_free(s
->session
);
1204 SSL_SESSION_free(s
->psksession
);
1205 OPENSSL_free(s
->psksession_id
);
1209 ssl_cert_free(s
->cert
);
1210 OPENSSL_free(s
->shared_sigalgs
);
1211 /* Free up if allocated */
1213 OPENSSL_free(s
->ext
.hostname
);
1214 SSL_CTX_free(s
->session_ctx
);
1215 #ifndef OPENSSL_NO_EC
1216 OPENSSL_free(s
->ext
.ecpointformats
);
1217 OPENSSL_free(s
->ext
.peer_ecpointformats
);
1218 #endif /* OPENSSL_NO_EC */
1219 OPENSSL_free(s
->ext
.supportedgroups
);
1220 OPENSSL_free(s
->ext
.peer_supportedgroups
);
1221 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1222 #ifndef OPENSSL_NO_OCSP
1223 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1225 #ifndef OPENSSL_NO_CT
1226 SCT_LIST_free(s
->scts
);
1227 OPENSSL_free(s
->ext
.scts
);
1229 OPENSSL_free(s
->ext
.ocsp
.resp
);
1230 OPENSSL_free(s
->ext
.alpn
);
1231 OPENSSL_free(s
->ext
.tls13_cookie
);
1232 if (s
->clienthello
!= NULL
)
1233 OPENSSL_free(s
->clienthello
->pre_proc_exts
);
1234 OPENSSL_free(s
->clienthello
);
1235 OPENSSL_free(s
->pha_context
);
1236 EVP_MD_CTX_free(s
->pha_dgst
);
1238 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1239 sk_X509_NAME_pop_free(s
->client_ca_names
, X509_NAME_free
);
1241 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1243 if (s
->method
!= NULL
)
1244 s
->method
->ssl_free(s
);
1246 SSL_CTX_free(s
->ctx
);
1248 ASYNC_WAIT_CTX_free(s
->waitctx
);
1250 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1251 OPENSSL_free(s
->ext
.npn
);
1254 #ifndef OPENSSL_NO_SRTP
1255 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1258 CRYPTO_THREAD_lock_free(s
->lock
);
1263 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1265 BIO_free_all(s
->rbio
);
1269 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1272 * If the output buffering BIO is still in place, remove it
1274 if (s
->bbio
!= NULL
)
1275 s
->wbio
= BIO_pop(s
->wbio
);
1277 BIO_free_all(s
->wbio
);
1280 /* Re-attach |bbio| to the new |wbio|. */
1281 if (s
->bbio
!= NULL
)
1282 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1285 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1288 * For historical reasons, this function has many different cases in
1289 * ownership handling.
1292 /* If nothing has changed, do nothing */
1293 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1297 * If the two arguments are equal then one fewer reference is granted by the
1298 * caller than we want to take
1300 if (rbio
!= NULL
&& rbio
== wbio
)
1304 * If only the wbio is changed only adopt one reference.
1306 if (rbio
== SSL_get_rbio(s
)) {
1307 SSL_set0_wbio(s
, wbio
);
1311 * There is an asymmetry here for historical reasons. If only the rbio is
1312 * changed AND the rbio and wbio were originally different, then we only
1313 * adopt one reference.
1315 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1316 SSL_set0_rbio(s
, rbio
);
1320 /* Otherwise, adopt both references. */
1321 SSL_set0_rbio(s
, rbio
);
1322 SSL_set0_wbio(s
, wbio
);
1325 BIO
*SSL_get_rbio(const SSL
*s
)
1330 BIO
*SSL_get_wbio(const SSL
*s
)
1332 if (s
->bbio
!= NULL
) {
1334 * If |bbio| is active, the true caller-configured BIO is its
1337 return BIO_next(s
->bbio
);
1342 int SSL_get_fd(const SSL
*s
)
1344 return SSL_get_rfd(s
);
1347 int SSL_get_rfd(const SSL
*s
)
1352 b
= SSL_get_rbio(s
);
1353 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1355 BIO_get_fd(r
, &ret
);
1359 int SSL_get_wfd(const SSL
*s
)
1364 b
= SSL_get_wbio(s
);
1365 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1367 BIO_get_fd(r
, &ret
);
1371 #ifndef OPENSSL_NO_SOCK
1372 int SSL_set_fd(SSL
*s
, int fd
)
1377 bio
= BIO_new(BIO_s_socket());
1380 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1383 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1384 SSL_set_bio(s
, bio
, bio
);
1385 #ifndef OPENSSL_NO_KTLS
1387 * The new socket is created successfully regardless of ktls_enable.
1388 * ktls_enable doesn't change any functionality of the socket, except
1389 * changing the setsockopt to enable the processing of ktls_start.
1390 * Thus, it is not a problem to call it for non-TLS sockets.
1393 #endif /* OPENSSL_NO_KTLS */
1399 int SSL_set_wfd(SSL
*s
, int fd
)
1401 BIO
*rbio
= SSL_get_rbio(s
);
1403 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1404 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1405 BIO
*bio
= BIO_new(BIO_s_socket());
1408 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1411 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1412 SSL_set0_wbio(s
, bio
);
1413 #ifndef OPENSSL_NO_KTLS
1415 * The new socket is created successfully regardless of ktls_enable.
1416 * ktls_enable doesn't change any functionality of the socket, except
1417 * changing the setsockopt to enable the processing of ktls_start.
1418 * Thus, it is not a problem to call it for non-TLS sockets.
1421 #endif /* OPENSSL_NO_KTLS */
1424 SSL_set0_wbio(s
, rbio
);
1429 int SSL_set_rfd(SSL
*s
, int fd
)
1431 BIO
*wbio
= SSL_get_wbio(s
);
1433 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1434 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1435 BIO
*bio
= BIO_new(BIO_s_socket());
1438 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1441 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1442 SSL_set0_rbio(s
, bio
);
1445 SSL_set0_rbio(s
, wbio
);
1452 /* return length of latest Finished message we sent, copy to 'buf' */
1453 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1457 ret
= s
->s3
.tmp
.finish_md_len
;
1460 memcpy(buf
, s
->s3
.tmp
.finish_md
, count
);
1464 /* return length of latest Finished message we expected, copy to 'buf' */
1465 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1469 ret
= s
->s3
.tmp
.peer_finish_md_len
;
1472 memcpy(buf
, s
->s3
.tmp
.peer_finish_md
, count
);
1476 int SSL_get_verify_mode(const SSL
*s
)
1478 return s
->verify_mode
;
1481 int SSL_get_verify_depth(const SSL
*s
)
1483 return X509_VERIFY_PARAM_get_depth(s
->param
);
1486 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1487 return s
->verify_callback
;
1490 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1492 return ctx
->verify_mode
;
1495 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1497 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1500 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1501 return ctx
->default_verify_callback
;
1504 void SSL_set_verify(SSL
*s
, int mode
,
1505 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1507 s
->verify_mode
= mode
;
1508 if (callback
!= NULL
)
1509 s
->verify_callback
= callback
;
1512 void SSL_set_verify_depth(SSL
*s
, int depth
)
1514 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1517 void SSL_set_read_ahead(SSL
*s
, int yes
)
1519 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1522 int SSL_get_read_ahead(const SSL
*s
)
1524 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1527 int SSL_pending(const SSL
*s
)
1529 size_t pending
= s
->method
->ssl_pending(s
);
1532 * SSL_pending cannot work properly if read-ahead is enabled
1533 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1534 * impossible to fix since SSL_pending cannot report errors that may be
1535 * observed while scanning the new data. (Note that SSL_pending() is
1536 * often used as a boolean value, so we'd better not return -1.)
1538 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1539 * we just return INT_MAX.
1541 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1544 int SSL_has_pending(const SSL
*s
)
1547 * Similar to SSL_pending() but returns a 1 to indicate that we have
1548 * unprocessed data available or 0 otherwise (as opposed to the number of
1549 * bytes available). Unlike SSL_pending() this will take into account
1550 * read_ahead data. A 1 return simply indicates that we have unprocessed
1551 * data. That data may not result in any application data, or we may fail
1552 * to parse the records for some reason.
1554 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1557 return RECORD_LAYER_read_pending(&s
->rlayer
);
1560 X509
*SSL_get1_peer_certificate(const SSL
*s
)
1562 X509
*r
= SSL_get0_peer_certificate(s
);
1570 X509
*SSL_get0_peer_certificate(const SSL
*s
)
1572 if ((s
== NULL
) || (s
->session
== NULL
))
1575 return s
->session
->peer
;
1578 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1582 if ((s
== NULL
) || (s
->session
== NULL
))
1585 r
= s
->session
->peer_chain
;
1588 * If we are a client, cert_chain includes the peer's own certificate; if
1589 * we are a server, it does not.
1596 * Now in theory, since the calling process own 't' it should be safe to
1597 * modify. We need to be able to read f without being hassled
1599 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1602 /* Do we need to to SSL locking? */
1603 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1608 * what if we are setup for one protocol version but want to talk another
1610 if (t
->method
!= f
->method
) {
1611 t
->method
->ssl_free(t
);
1612 t
->method
= f
->method
;
1613 if (t
->method
->ssl_new(t
) == 0)
1617 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1618 ssl_cert_free(t
->cert
);
1620 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1627 /* Fix this so it checks all the valid key/cert options */
1628 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1630 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1631 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1634 if (ctx
->cert
->key
->privatekey
== NULL
) {
1635 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1638 return X509_check_private_key
1639 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1642 /* Fix this function so that it takes an optional type parameter */
1643 int SSL_check_private_key(const SSL
*ssl
)
1646 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1649 if (ssl
->cert
->key
->x509
== NULL
) {
1650 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1653 if (ssl
->cert
->key
->privatekey
== NULL
) {
1654 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1657 return X509_check_private_key(ssl
->cert
->key
->x509
,
1658 ssl
->cert
->key
->privatekey
);
1661 int SSL_waiting_for_async(SSL
*s
)
1669 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1671 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1675 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1678 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1679 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1681 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1685 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1689 int SSL_CTX_set_async_callback(SSL_CTX
*ctx
, SSL_async_callback_fn callback
)
1691 ctx
->async_cb
= callback
;
1695 int SSL_CTX_set_async_callback_arg(SSL_CTX
*ctx
, void *arg
)
1697 ctx
->async_cb_arg
= arg
;
1701 int SSL_set_async_callback(SSL
*s
, SSL_async_callback_fn callback
)
1703 s
->async_cb
= callback
;
1707 int SSL_set_async_callback_arg(SSL
*s
, void *arg
)
1709 s
->async_cb_arg
= arg
;
1713 int SSL_get_async_status(SSL
*s
, int *status
)
1715 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1719 *status
= ASYNC_WAIT_CTX_get_status(ctx
);
1723 int SSL_accept(SSL
*s
)
1725 if (s
->handshake_func
== NULL
) {
1726 /* Not properly initialized yet */
1727 SSL_set_accept_state(s
);
1730 return SSL_do_handshake(s
);
1733 int SSL_connect(SSL
*s
)
1735 if (s
->handshake_func
== NULL
) {
1736 /* Not properly initialized yet */
1737 SSL_set_connect_state(s
);
1740 return SSL_do_handshake(s
);
1743 long SSL_get_default_timeout(const SSL
*s
)
1745 return s
->method
->get_timeout();
1748 static int ssl_async_wait_ctx_cb(void *arg
)
1750 SSL
*s
= (SSL
*)arg
;
1752 return s
->async_cb(s
, s
->async_cb_arg
);
1755 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1756 int (*func
) (void *))
1759 if (s
->waitctx
== NULL
) {
1760 s
->waitctx
= ASYNC_WAIT_CTX_new();
1761 if (s
->waitctx
== NULL
)
1763 if (s
->async_cb
!= NULL
1764 && !ASYNC_WAIT_CTX_set_callback
1765 (s
->waitctx
, ssl_async_wait_ctx_cb
, s
))
1768 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1769 sizeof(struct ssl_async_args
))) {
1771 s
->rwstate
= SSL_NOTHING
;
1772 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1775 s
->rwstate
= SSL_ASYNC_PAUSED
;
1778 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1784 s
->rwstate
= SSL_NOTHING
;
1785 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1786 /* Shouldn't happen */
1791 static int ssl_io_intern(void *vargs
)
1793 struct ssl_async_args
*args
;
1798 args
= (struct ssl_async_args
*)vargs
;
1802 switch (args
->type
) {
1804 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1806 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1808 return args
->f
.func_other(s
);
1813 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1815 if (s
->handshake_func
== NULL
) {
1816 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1820 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1821 s
->rwstate
= SSL_NOTHING
;
1825 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1826 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1827 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1831 * If we are a client and haven't received the ServerHello etc then we
1834 ossl_statem_check_finish_init(s
, 0);
1836 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1837 struct ssl_async_args args
;
1843 args
.type
= READFUNC
;
1844 args
.f
.func_read
= s
->method
->ssl_read
;
1846 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1847 *readbytes
= s
->asyncrw
;
1850 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1854 int SSL_read(SSL
*s
, void *buf
, int num
)
1860 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1864 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1867 * The cast is safe here because ret should be <= INT_MAX because num is
1871 ret
= (int)readbytes
;
1876 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1878 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1885 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1890 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1891 return SSL_READ_EARLY_DATA_ERROR
;
1894 switch (s
->early_data_state
) {
1895 case SSL_EARLY_DATA_NONE
:
1896 if (!SSL_in_before(s
)) {
1897 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1898 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1899 return SSL_READ_EARLY_DATA_ERROR
;
1903 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1904 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1905 ret
= SSL_accept(s
);
1908 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1909 return SSL_READ_EARLY_DATA_ERROR
;
1913 case SSL_EARLY_DATA_READ_RETRY
:
1914 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1915 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1916 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1918 * State machine will update early_data_state to
1919 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1922 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1923 != SSL_EARLY_DATA_FINISHED_READING
)) {
1924 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1925 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1926 : SSL_READ_EARLY_DATA_ERROR
;
1929 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1932 return SSL_READ_EARLY_DATA_FINISH
;
1935 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1936 return SSL_READ_EARLY_DATA_ERROR
;
1940 int SSL_get_early_data_status(const SSL
*s
)
1942 return s
->ext
.early_data
;
1945 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1947 if (s
->handshake_func
== NULL
) {
1948 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1952 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1955 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1956 struct ssl_async_args args
;
1962 args
.type
= READFUNC
;
1963 args
.f
.func_read
= s
->method
->ssl_peek
;
1965 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1966 *readbytes
= s
->asyncrw
;
1969 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1973 int SSL_peek(SSL
*s
, void *buf
, int num
)
1979 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1983 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1986 * The cast is safe here because ret should be <= INT_MAX because num is
1990 ret
= (int)readbytes
;
1996 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1998 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
2005 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2007 if (s
->handshake_func
== NULL
) {
2008 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
2012 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2013 s
->rwstate
= SSL_NOTHING
;
2014 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2018 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
2019 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
2020 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
2021 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2024 /* If we are a client and haven't sent the Finished we better do that */
2025 ossl_statem_check_finish_init(s
, 1);
2027 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2029 struct ssl_async_args args
;
2032 args
.buf
= (void *)buf
;
2034 args
.type
= WRITEFUNC
;
2035 args
.f
.func_write
= s
->method
->ssl_write
;
2037 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
2038 *written
= s
->asyncrw
;
2041 return s
->method
->ssl_write(s
, buf
, num
, written
);
2045 ossl_ssize_t
SSL_sendfile(SSL
*s
, int fd
, off_t offset
, size_t size
, int flags
)
2049 if (s
->handshake_func
== NULL
) {
2050 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2054 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2055 s
->rwstate
= SSL_NOTHING
;
2056 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2060 if (!BIO_get_ktls_send(s
->wbio
)) {
2061 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2065 /* If we have an alert to send, lets send it */
2066 if (s
->s3
.alert_dispatch
) {
2067 ret
= (ossl_ssize_t
)s
->method
->ssl_dispatch_alert(s
);
2069 /* SSLfatal() already called if appropriate */
2072 /* if it went, fall through and send more stuff */
2075 s
->rwstate
= SSL_WRITING
;
2076 if (BIO_flush(s
->wbio
) <= 0) {
2077 if (!BIO_should_retry(s
->wbio
)) {
2078 s
->rwstate
= SSL_NOTHING
;
2081 set_sys_error(EAGAIN
);
2087 #ifdef OPENSSL_NO_KTLS
2088 ERR_raise_data(ERR_LIB_SSL
, ERR_R_INTERNAL_ERROR
,
2089 "can't call ktls_sendfile(), ktls disabled");
2092 ret
= ktls_sendfile(SSL_get_wfd(s
), fd
, offset
, size
, flags
);
2094 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2095 if ((get_last_sys_error() == EAGAIN
) ||
2096 (get_last_sys_error() == EINTR
) ||
2097 (get_last_sys_error() == EBUSY
))
2098 BIO_set_retry_write(s
->wbio
);
2101 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2104 s
->rwstate
= SSL_NOTHING
;
2109 int SSL_write(SSL
*s
, const void *buf
, int num
)
2115 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
2119 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
2122 * The cast is safe here because ret should be <= INT_MAX because num is
2131 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2133 int ret
= ssl_write_internal(s
, buf
, num
, written
);
2140 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2142 int ret
, early_data_state
;
2144 uint32_t partialwrite
;
2146 switch (s
->early_data_state
) {
2147 case SSL_EARLY_DATA_NONE
:
2149 || !SSL_in_before(s
)
2150 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
2151 && (s
->psk_use_session_cb
== NULL
))) {
2152 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
2153 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2158 case SSL_EARLY_DATA_CONNECT_RETRY
:
2159 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
2160 ret
= SSL_connect(s
);
2163 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
2168 case SSL_EARLY_DATA_WRITE_RETRY
:
2169 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2171 * We disable partial write for early data because we don't keep track
2172 * of how many bytes we've written between the SSL_write_ex() call and
2173 * the flush if the flush needs to be retried)
2175 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2176 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2177 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2178 s
->mode
|= partialwrite
;
2180 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2183 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2186 case SSL_EARLY_DATA_WRITE_FLUSH
:
2187 /* The buffering BIO is still in place so we need to flush it */
2188 if (statem_flush(s
) != 1)
2191 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2194 case SSL_EARLY_DATA_FINISHED_READING
:
2195 case SSL_EARLY_DATA_READ_RETRY
:
2196 early_data_state
= s
->early_data_state
;
2197 /* We are a server writing to an unauthenticated client */
2198 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2199 ret
= SSL_write_ex(s
, buf
, num
, written
);
2200 /* The buffering BIO is still in place */
2202 (void)BIO_flush(s
->wbio
);
2203 s
->early_data_state
= early_data_state
;
2207 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2212 int SSL_shutdown(SSL
*s
)
2215 * Note that this function behaves differently from what one might
2216 * expect. Return values are 0 for no success (yet), 1 for success; but
2217 * calling it once is usually not enough, even if blocking I/O is used
2218 * (see ssl3_shutdown).
2221 if (s
->handshake_func
== NULL
) {
2222 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2226 if (!SSL_in_init(s
)) {
2227 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2228 struct ssl_async_args args
;
2231 args
.type
= OTHERFUNC
;
2232 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2234 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2236 return s
->method
->ssl_shutdown(s
);
2239 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2244 int SSL_key_update(SSL
*s
, int updatetype
)
2247 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2248 * negotiated, and that it is appropriate to call SSL_key_update() instead
2249 * of SSL_renegotiate().
2251 if (!SSL_IS_TLS13(s
)) {
2252 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2256 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2257 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2258 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2262 if (!SSL_is_init_finished(s
)) {
2263 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2267 ossl_statem_set_in_init(s
, 1);
2268 s
->key_update
= updatetype
;
2272 int SSL_get_key_update_type(const SSL
*s
)
2274 return s
->key_update
;
2277 int SSL_renegotiate(SSL
*s
)
2279 if (SSL_IS_TLS13(s
)) {
2280 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2284 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2285 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2292 return s
->method
->ssl_renegotiate(s
);
2295 int SSL_renegotiate_abbreviated(SSL
*s
)
2297 if (SSL_IS_TLS13(s
)) {
2298 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2302 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2303 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2310 return s
->method
->ssl_renegotiate(s
);
2313 int SSL_renegotiate_pending(const SSL
*s
)
2316 * becomes true when negotiation is requested; false again once a
2317 * handshake has finished
2319 return (s
->renegotiate
!= 0);
2322 int SSL_new_session_ticket(SSL
*s
)
2324 if (SSL_in_init(s
) || SSL_IS_FIRST_HANDSHAKE(s
) || !s
->server
2325 || !SSL_IS_TLS13(s
))
2327 s
->ext
.extra_tickets_expected
++;
2331 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2336 case SSL_CTRL_GET_READ_AHEAD
:
2337 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2338 case SSL_CTRL_SET_READ_AHEAD
:
2339 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2340 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2343 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2344 s
->msg_callback_arg
= parg
;
2348 return (s
->mode
|= larg
);
2349 case SSL_CTRL_CLEAR_MODE
:
2350 return (s
->mode
&= ~larg
);
2351 case SSL_CTRL_GET_MAX_CERT_LIST
:
2352 return (long)s
->max_cert_list
;
2353 case SSL_CTRL_SET_MAX_CERT_LIST
:
2356 l
= (long)s
->max_cert_list
;
2357 s
->max_cert_list
= (size_t)larg
;
2359 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2360 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2362 #ifndef OPENSSL_NO_KTLS
2363 if (s
->wbio
!= NULL
&& BIO_get_ktls_send(s
->wbio
))
2365 #endif /* OPENSSL_NO_KTLS */
2366 s
->max_send_fragment
= larg
;
2367 if (s
->max_send_fragment
< s
->split_send_fragment
)
2368 s
->split_send_fragment
= s
->max_send_fragment
;
2370 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2371 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2373 s
->split_send_fragment
= larg
;
2375 case SSL_CTRL_SET_MAX_PIPELINES
:
2376 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2378 s
->max_pipelines
= larg
;
2380 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2382 case SSL_CTRL_GET_RI_SUPPORT
:
2383 return s
->s3
.send_connection_binding
;
2384 case SSL_CTRL_CERT_FLAGS
:
2385 return (s
->cert
->cert_flags
|= larg
);
2386 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2387 return (s
->cert
->cert_flags
&= ~larg
);
2389 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2391 if (s
->s3
.tmp
.ciphers_raw
== NULL
)
2393 *(unsigned char **)parg
= s
->s3
.tmp
.ciphers_raw
;
2394 return (int)s
->s3
.tmp
.ciphers_rawlen
;
2396 return TLS_CIPHER_LEN
;
2398 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2399 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2401 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2405 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2406 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2407 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2408 &s
->min_proto_version
);
2409 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2410 return s
->min_proto_version
;
2411 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2412 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2413 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2414 &s
->max_proto_version
);
2415 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2416 return s
->max_proto_version
;
2418 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2422 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2425 case SSL_CTRL_SET_MSG_CALLBACK
:
2426 s
->msg_callback
= (void (*)
2427 (int write_p
, int version
, int content_type
,
2428 const void *buf
, size_t len
, SSL
*ssl
,
2433 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2437 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2439 return ctx
->sessions
;
2442 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2445 /* For some cases with ctx == NULL perform syntax checks */
2448 case SSL_CTRL_SET_GROUPS_LIST
:
2449 return tls1_set_groups_list(ctx
, NULL
, NULL
, parg
);
2450 case SSL_CTRL_SET_SIGALGS_LIST
:
2451 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2452 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2459 case SSL_CTRL_GET_READ_AHEAD
:
2460 return ctx
->read_ahead
;
2461 case SSL_CTRL_SET_READ_AHEAD
:
2462 l
= ctx
->read_ahead
;
2463 ctx
->read_ahead
= larg
;
2466 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2467 ctx
->msg_callback_arg
= parg
;
2470 case SSL_CTRL_GET_MAX_CERT_LIST
:
2471 return (long)ctx
->max_cert_list
;
2472 case SSL_CTRL_SET_MAX_CERT_LIST
:
2475 l
= (long)ctx
->max_cert_list
;
2476 ctx
->max_cert_list
= (size_t)larg
;
2479 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2482 l
= (long)ctx
->session_cache_size
;
2483 ctx
->session_cache_size
= (size_t)larg
;
2485 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2486 return (long)ctx
->session_cache_size
;
2487 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2488 l
= ctx
->session_cache_mode
;
2489 ctx
->session_cache_mode
= larg
;
2491 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2492 return ctx
->session_cache_mode
;
2494 case SSL_CTRL_SESS_NUMBER
:
2495 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2496 case SSL_CTRL_SESS_CONNECT
:
2497 return tsan_load(&ctx
->stats
.sess_connect
);
2498 case SSL_CTRL_SESS_CONNECT_GOOD
:
2499 return tsan_load(&ctx
->stats
.sess_connect_good
);
2500 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2501 return tsan_load(&ctx
->stats
.sess_connect_renegotiate
);
2502 case SSL_CTRL_SESS_ACCEPT
:
2503 return tsan_load(&ctx
->stats
.sess_accept
);
2504 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2505 return tsan_load(&ctx
->stats
.sess_accept_good
);
2506 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2507 return tsan_load(&ctx
->stats
.sess_accept_renegotiate
);
2508 case SSL_CTRL_SESS_HIT
:
2509 return tsan_load(&ctx
->stats
.sess_hit
);
2510 case SSL_CTRL_SESS_CB_HIT
:
2511 return tsan_load(&ctx
->stats
.sess_cb_hit
);
2512 case SSL_CTRL_SESS_MISSES
:
2513 return tsan_load(&ctx
->stats
.sess_miss
);
2514 case SSL_CTRL_SESS_TIMEOUTS
:
2515 return tsan_load(&ctx
->stats
.sess_timeout
);
2516 case SSL_CTRL_SESS_CACHE_FULL
:
2517 return tsan_load(&ctx
->stats
.sess_cache_full
);
2519 return (ctx
->mode
|= larg
);
2520 case SSL_CTRL_CLEAR_MODE
:
2521 return (ctx
->mode
&= ~larg
);
2522 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2523 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2525 ctx
->max_send_fragment
= larg
;
2526 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2527 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2529 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2530 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2532 ctx
->split_send_fragment
= larg
;
2534 case SSL_CTRL_SET_MAX_PIPELINES
:
2535 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2537 ctx
->max_pipelines
= larg
;
2539 case SSL_CTRL_CERT_FLAGS
:
2540 return (ctx
->cert
->cert_flags
|= larg
);
2541 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2542 return (ctx
->cert
->cert_flags
&= ~larg
);
2543 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2544 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2545 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2546 &ctx
->min_proto_version
);
2547 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2548 return ctx
->min_proto_version
;
2549 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2550 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2551 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2552 &ctx
->max_proto_version
);
2553 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2554 return ctx
->max_proto_version
;
2556 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2560 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2563 case SSL_CTRL_SET_MSG_CALLBACK
:
2564 ctx
->msg_callback
= (void (*)
2565 (int write_p
, int version
, int content_type
,
2566 const void *buf
, size_t len
, SSL
*ssl
,
2571 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2575 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2584 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2585 const SSL_CIPHER
*const *bp
)
2587 if ((*ap
)->id
> (*bp
)->id
)
2589 if ((*ap
)->id
< (*bp
)->id
)
2594 /** return a STACK of the ciphers available for the SSL and in order of
2596 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2599 if (s
->cipher_list
!= NULL
) {
2600 return s
->cipher_list
;
2601 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2602 return s
->ctx
->cipher_list
;
2608 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2610 if ((s
== NULL
) || !s
->server
)
2612 return s
->peer_ciphers
;
2615 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2617 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2620 ciphers
= SSL_get_ciphers(s
);
2623 if (!ssl_set_client_disabled(s
))
2625 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2626 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2627 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2629 sk
= sk_SSL_CIPHER_new_null();
2632 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2633 sk_SSL_CIPHER_free(sk
);
2641 /** return a STACK of the ciphers available for the SSL and in order of
2643 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2646 if (s
->cipher_list_by_id
!= NULL
) {
2647 return s
->cipher_list_by_id
;
2648 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2649 return s
->ctx
->cipher_list_by_id
;
2655 /** The old interface to get the same thing as SSL_get_ciphers() */
2656 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2658 const SSL_CIPHER
*c
;
2659 STACK_OF(SSL_CIPHER
) *sk
;
2663 sk
= SSL_get_ciphers(s
);
2664 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2666 c
= sk_SSL_CIPHER_value(sk
, n
);
2672 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2674 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2677 return ctx
->cipher_list
;
2682 * Distinguish between ciphers controlled by set_ciphersuite() and
2683 * set_cipher_list() when counting.
2685 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER
) *sk
)
2688 const SSL_CIPHER
*c
;
2692 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); ++i
) {
2693 c
= sk_SSL_CIPHER_value(sk
, i
);
2694 if (c
->min_tls
>= TLS1_3_VERSION
)
2701 /** specify the ciphers to be used by default by the SSL_CTX */
2702 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2704 STACK_OF(SSL_CIPHER
) *sk
;
2706 sk
= ssl_create_cipher_list(ctx
->method
, ctx
->tls13_ciphersuites
,
2707 &ctx
->cipher_list
, &ctx
->cipher_list_by_id
, str
,
2710 * ssl_create_cipher_list may return an empty stack if it was unable to
2711 * find a cipher matching the given rule string (for example if the rule
2712 * string specifies a cipher which has been disabled). This is not an
2713 * error as far as ssl_create_cipher_list is concerned, and hence
2714 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2718 else if (cipher_list_tls12_num(sk
) == 0) {
2719 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2725 /** specify the ciphers to be used by the SSL */
2726 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2728 STACK_OF(SSL_CIPHER
) *sk
;
2730 sk
= ssl_create_cipher_list(s
->ctx
->method
, s
->tls13_ciphersuites
,
2731 &s
->cipher_list
, &s
->cipher_list_by_id
, str
,
2733 /* see comment in SSL_CTX_set_cipher_list */
2736 else if (cipher_list_tls12_num(sk
) == 0) {
2737 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2743 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int size
)
2746 STACK_OF(SSL_CIPHER
) *clntsk
, *srvrsk
;
2747 const SSL_CIPHER
*c
;
2751 || s
->peer_ciphers
== NULL
2756 clntsk
= s
->peer_ciphers
;
2757 srvrsk
= SSL_get_ciphers(s
);
2758 if (clntsk
== NULL
|| srvrsk
== NULL
)
2761 if (sk_SSL_CIPHER_num(clntsk
) == 0 || sk_SSL_CIPHER_num(srvrsk
) == 0)
2764 for (i
= 0; i
< sk_SSL_CIPHER_num(clntsk
); i
++) {
2767 c
= sk_SSL_CIPHER_value(clntsk
, i
);
2768 if (sk_SSL_CIPHER_find(srvrsk
, c
) < 0)
2771 n
= strlen(c
->name
);
2788 * Return the requested servername (SNI) value. Note that the behaviour varies
2790 * - whether this is called by the client or the server,
2791 * - if we are before or during/after the handshake,
2792 * - if a resumption or normal handshake is being attempted/has occurred
2793 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2795 * Note that only the host_name type is defined (RFC 3546).
2797 const char *SSL_get_servername(const SSL
*s
, const int type
)
2800 * If we don't know if we are the client or the server yet then we assume
2803 int server
= s
->handshake_func
== NULL
? 0 : s
->server
;
2804 if (type
!= TLSEXT_NAMETYPE_host_name
)
2810 * In TLSv1.3 on the server SNI is not associated with the session
2811 * but in TLSv1.2 or below it is.
2813 * Before the handshake:
2816 * During/after the handshake (TLSv1.2 or below resumption occurred):
2817 * - If a servername was accepted by the server in the original
2818 * handshake then it will return that servername, or NULL otherwise.
2820 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2821 * - The function will return the servername requested by the client in
2822 * this handshake or NULL if none was requested.
2824 if (s
->hit
&& !SSL_IS_TLS13(s
))
2825 return s
->session
->ext
.hostname
;
2830 * Before the handshake:
2831 * - If a servername has been set via a call to
2832 * SSL_set_tlsext_host_name() then it will return that servername
2833 * - If one has not been set, but a TLSv1.2 resumption is being
2834 * attempted and the session from the original handshake had a
2835 * servername accepted by the server then it will return that
2837 * - Otherwise it returns NULL
2839 * During/after the handshake (TLSv1.2 or below resumption occurred):
2840 * - If the session from the orignal handshake had a servername accepted
2841 * by the server then it will return that servername.
2842 * - Otherwise it returns the servername set via
2843 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2845 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2846 * - It will return the servername set via SSL_set_tlsext_host_name()
2847 * (or NULL if it was not called).
2849 if (SSL_in_before(s
)) {
2850 if (s
->ext
.hostname
== NULL
2851 && s
->session
!= NULL
2852 && s
->session
->ssl_version
!= TLS1_3_VERSION
)
2853 return s
->session
->ext
.hostname
;
2855 if (!SSL_IS_TLS13(s
) && s
->hit
&& s
->session
->ext
.hostname
!= NULL
)
2856 return s
->session
->ext
.hostname
;
2860 return s
->ext
.hostname
;
2863 int SSL_get_servername_type(const SSL
*s
)
2865 if (SSL_get_servername(s
, TLSEXT_NAMETYPE_host_name
) != NULL
)
2866 return TLSEXT_NAMETYPE_host_name
;
2871 * SSL_select_next_proto implements the standard protocol selection. It is
2872 * expected that this function is called from the callback set by
2873 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2874 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2875 * not included in the length. A byte string of length 0 is invalid. No byte
2876 * string may be truncated. The current, but experimental algorithm for
2877 * selecting the protocol is: 1) If the server doesn't support NPN then this
2878 * is indicated to the callback. In this case, the client application has to
2879 * abort the connection or have a default application level protocol. 2) If
2880 * the server supports NPN, but advertises an empty list then the client
2881 * selects the first protocol in its list, but indicates via the API that this
2882 * fallback case was enacted. 3) Otherwise, the client finds the first
2883 * protocol in the server's list that it supports and selects this protocol.
2884 * This is because it's assumed that the server has better information about
2885 * which protocol a client should use. 4) If the client doesn't support any
2886 * of the server's advertised protocols, then this is treated the same as
2887 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2888 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2890 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2891 const unsigned char *server
,
2892 unsigned int server_len
,
2893 const unsigned char *client
, unsigned int client_len
)
2896 const unsigned char *result
;
2897 int status
= OPENSSL_NPN_UNSUPPORTED
;
2900 * For each protocol in server preference order, see if we support it.
2902 for (i
= 0; i
< server_len
;) {
2903 for (j
= 0; j
< client_len
;) {
2904 if (server
[i
] == client
[j
] &&
2905 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2906 /* We found a match */
2907 result
= &server
[i
];
2908 status
= OPENSSL_NPN_NEGOTIATED
;
2918 /* There's no overlap between our protocols and the server's list. */
2920 status
= OPENSSL_NPN_NO_OVERLAP
;
2923 *out
= (unsigned char *)result
+ 1;
2924 *outlen
= result
[0];
2928 #ifndef OPENSSL_NO_NEXTPROTONEG
2930 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2931 * client's requested protocol for this connection and returns 0. If the
2932 * client didn't request any protocol, then *data is set to NULL. Note that
2933 * the client can request any protocol it chooses. The value returned from
2934 * this function need not be a member of the list of supported protocols
2935 * provided by the callback.
2937 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2941 if (*data
== NULL
) {
2944 *len
= (unsigned int)s
->ext
.npn_len
;
2949 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2950 * a TLS server needs a list of supported protocols for Next Protocol
2951 * Negotiation. The returned list must be in wire format. The list is
2952 * returned by setting |out| to point to it and |outlen| to its length. This
2953 * memory will not be modified, but one should assume that the SSL* keeps a
2954 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2955 * wishes to advertise. Otherwise, no such extension will be included in the
2958 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2959 SSL_CTX_npn_advertised_cb_func cb
,
2962 ctx
->ext
.npn_advertised_cb
= cb
;
2963 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2967 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2968 * client needs to select a protocol from the server's provided list. |out|
2969 * must be set to point to the selected protocol (which may be within |in|).
2970 * The length of the protocol name must be written into |outlen|. The
2971 * server's advertised protocols are provided in |in| and |inlen|. The
2972 * callback can assume that |in| is syntactically valid. The client must
2973 * select a protocol. It is fatal to the connection if this callback returns
2974 * a value other than SSL_TLSEXT_ERR_OK.
2976 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2977 SSL_CTX_npn_select_cb_func cb
,
2980 ctx
->ext
.npn_select_cb
= cb
;
2981 ctx
->ext
.npn_select_cb_arg
= arg
;
2986 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2987 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2988 * length-prefixed strings). Returns 0 on success.
2990 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2991 unsigned int protos_len
)
2993 OPENSSL_free(ctx
->ext
.alpn
);
2994 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2995 if (ctx
->ext
.alpn
== NULL
) {
2996 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2999 ctx
->ext
.alpn_len
= protos_len
;
3005 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3006 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3007 * length-prefixed strings). Returns 0 on success.
3009 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
3010 unsigned int protos_len
)
3012 OPENSSL_free(ssl
->ext
.alpn
);
3013 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
3014 if (ssl
->ext
.alpn
== NULL
) {
3015 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
3018 ssl
->ext
.alpn_len
= protos_len
;
3024 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3025 * called during ClientHello processing in order to select an ALPN protocol
3026 * from the client's list of offered protocols.
3028 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
3029 SSL_CTX_alpn_select_cb_func cb
,
3032 ctx
->ext
.alpn_select_cb
= cb
;
3033 ctx
->ext
.alpn_select_cb_arg
= arg
;
3037 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3038 * On return it sets |*data| to point to |*len| bytes of protocol name
3039 * (not including the leading length-prefix byte). If the server didn't
3040 * respond with a negotiated protocol then |*len| will be zero.
3042 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
3045 *data
= ssl
->s3
.alpn_selected
;
3049 *len
= (unsigned int)ssl
->s3
.alpn_selected_len
;
3052 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
3053 const char *label
, size_t llen
,
3054 const unsigned char *context
, size_t contextlen
,
3057 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
3060 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
3062 contextlen
, use_context
);
3065 int SSL_export_keying_material_early(SSL
*s
, unsigned char *out
, size_t olen
,
3066 const char *label
, size_t llen
,
3067 const unsigned char *context
,
3070 if (s
->version
!= TLS1_3_VERSION
)
3073 return tls13_export_keying_material_early(s
, out
, olen
, label
, llen
,
3074 context
, contextlen
);
3077 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
3079 const unsigned char *session_id
= a
->session_id
;
3081 unsigned char tmp_storage
[4];
3083 if (a
->session_id_length
< sizeof(tmp_storage
)) {
3084 memset(tmp_storage
, 0, sizeof(tmp_storage
));
3085 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
3086 session_id
= tmp_storage
;
3090 ((unsigned long)session_id
[0]) |
3091 ((unsigned long)session_id
[1] << 8L) |
3092 ((unsigned long)session_id
[2] << 16L) |
3093 ((unsigned long)session_id
[3] << 24L);
3098 * NB: If this function (or indeed the hash function which uses a sort of
3099 * coarser function than this one) is changed, ensure
3100 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3101 * being able to construct an SSL_SESSION that will collide with any existing
3102 * session with a matching session ID.
3104 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
3106 if (a
->ssl_version
!= b
->ssl_version
)
3108 if (a
->session_id_length
!= b
->session_id_length
)
3110 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
3114 * These wrapper functions should remain rather than redeclaring
3115 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3116 * variable. The reason is that the functions aren't static, they're exposed
3120 SSL_CTX
*SSL_CTX_new_with_libctx(OPENSSL_CTX
*libctx
, const char *propq
,
3121 const SSL_METHOD
*meth
)
3123 SSL_CTX
*ret
= NULL
;
3126 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED
);
3130 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
3133 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3134 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
3137 ret
= OPENSSL_zalloc(sizeof(*ret
));
3141 ret
->libctx
= libctx
;
3142 if (propq
!= NULL
) {
3143 ret
->propq
= OPENSSL_strdup(propq
);
3144 if (ret
->propq
== NULL
)
3149 ret
->min_proto_version
= 0;
3150 ret
->max_proto_version
= 0;
3151 ret
->mode
= SSL_MODE_AUTO_RETRY
;
3152 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
3153 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
3154 /* We take the system default. */
3155 ret
->session_timeout
= meth
->get_timeout();
3156 ret
->references
= 1;
3157 ret
->lock
= CRYPTO_THREAD_lock_new();
3158 if (ret
->lock
== NULL
) {
3159 SSLerr(0, ERR_R_MALLOC_FAILURE
);
3163 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
3164 ret
->verify_mode
= SSL_VERIFY_NONE
;
3165 if ((ret
->cert
= ssl_cert_new()) == NULL
)
3168 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
3169 if (ret
->sessions
== NULL
)
3171 ret
->cert_store
= X509_STORE_new();
3172 if (ret
->cert_store
== NULL
)
3174 #ifndef OPENSSL_NO_CT
3175 ret
->ctlog_store
= CTLOG_STORE_new_with_libctx(libctx
, propq
);
3176 if (ret
->ctlog_store
== NULL
)
3180 /* initialize cipher/digest methods table */
3181 if (!ssl_load_ciphers(ret
))
3183 /* initialise sig algs */
3184 if (!ssl_setup_sig_algs(ret
))
3188 if (!ssl_load_groups(ret
))
3191 if (!SSL_CTX_set_ciphersuites(ret
, OSSL_default_ciphersuites()))
3194 if (!ssl_create_cipher_list(ret
->method
,
3195 ret
->tls13_ciphersuites
,
3196 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
3197 OSSL_default_cipher_list(), ret
->cert
)
3198 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
3199 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
3203 ret
->param
= X509_VERIFY_PARAM_new();
3204 if (ret
->param
== NULL
)
3208 * If these aren't available from the provider we'll get NULL returns.
3209 * That's fine but will cause errors later if SSLv3 is negotiated
3211 ret
->md5
= ssl_evp_md_fetch(libctx
, NID_md5
, propq
);
3212 ret
->sha1
= ssl_evp_md_fetch(libctx
, NID_sha1
, propq
);
3214 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
3217 if ((ret
->client_ca_names
= sk_X509_NAME_new_null()) == NULL
)
3220 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
3223 if ((ret
->ext
.secure
= OPENSSL_secure_zalloc(sizeof(*ret
->ext
.secure
))) == NULL
)
3226 /* No compression for DTLS */
3227 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
3228 ret
->comp_methods
= SSL_COMP_get_compression_methods();
3230 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3231 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3233 /* Setup RFC5077 ticket keys */
3234 if ((RAND_bytes_ex(libctx
, ret
->ext
.tick_key_name
,
3235 sizeof(ret
->ext
.tick_key_name
)) <= 0)
3236 || (RAND_priv_bytes_ex(libctx
, ret
->ext
.secure
->tick_hmac_key
,
3237 sizeof(ret
->ext
.secure
->tick_hmac_key
)) <= 0)
3238 || (RAND_priv_bytes_ex(libctx
, ret
->ext
.secure
->tick_aes_key
,
3239 sizeof(ret
->ext
.secure
->tick_aes_key
)) <= 0))
3240 ret
->options
|= SSL_OP_NO_TICKET
;
3242 if (RAND_priv_bytes_ex(libctx
, ret
->ext
.cookie_hmac_key
,
3243 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
3246 #ifndef OPENSSL_NO_SRP
3247 if (!SSL_CTX_SRP_CTX_init(ret
))
3250 #ifndef OPENSSL_NO_ENGINE
3251 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3252 # define eng_strx(x) #x
3253 # define eng_str(x) eng_strx(x)
3254 /* Use specific client engine automatically... ignore errors */
3257 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3260 ENGINE_load_builtin_engines();
3261 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3263 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
3269 * Default is to connect to non-RI servers. When RI is more widely
3270 * deployed might change this.
3272 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
3274 * Disable compression by default to prevent CRIME. Applications can
3275 * re-enable compression by configuring
3276 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3277 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3278 * middlebox compatibility by default. This may be disabled by default in
3279 * a later OpenSSL version.
3281 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
3283 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
3286 * We cannot usefully set a default max_early_data here (which gets
3287 * propagated in SSL_new(), for the following reason: setting the
3288 * SSL field causes tls_construct_stoc_early_data() to tell the
3289 * client that early data will be accepted when constructing a TLS 1.3
3290 * session ticket, and the client will accordingly send us early data
3291 * when using that ticket (if the client has early data to send).
3292 * However, in order for the early data to actually be consumed by
3293 * the application, the application must also have calls to
3294 * SSL_read_early_data(); otherwise we'll just skip past the early data
3295 * and ignore it. So, since the application must add calls to
3296 * SSL_read_early_data(), we also require them to add
3297 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3298 * eliminating the bandwidth-wasting early data in the case described
3301 ret
->max_early_data
= 0;
3304 * Default recv_max_early_data is a fully loaded single record. Could be
3305 * split across multiple records in practice. We set this differently to
3306 * max_early_data so that, in the default case, we do not advertise any
3307 * support for early_data, but if a client were to send us some (e.g.
3308 * because of an old, stale ticket) then we will tolerate it and skip over
3311 ret
->recv_max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
3313 /* By default we send two session tickets automatically in TLSv1.3 */
3314 ret
->num_tickets
= 2;
3316 ssl_ctx_system_config(ret
);
3320 SSLerr(0, ERR_R_MALLOC_FAILURE
);
3326 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
3328 return SSL_CTX_new_with_libctx(NULL
, NULL
, meth
);
3331 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3335 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3338 REF_PRINT_COUNT("SSL_CTX", ctx
);
3339 REF_ASSERT_ISNT(i
< 2);
3340 return ((i
> 1) ? 1 : 0);
3343 void SSL_CTX_free(SSL_CTX
*a
)
3351 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3352 REF_PRINT_COUNT("SSL_CTX", a
);
3355 REF_ASSERT_ISNT(i
< 0);
3357 X509_VERIFY_PARAM_free(a
->param
);
3358 dane_ctx_final(&a
->dane
);
3361 * Free internal session cache. However: the remove_cb() may reference
3362 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3363 * after the sessions were flushed.
3364 * As the ex_data handling routines might also touch the session cache,
3365 * the most secure solution seems to be: empty (flush) the cache, then
3366 * free ex_data, then finally free the cache.
3367 * (See ticket [openssl.org #212].)
3369 if (a
->sessions
!= NULL
)
3370 SSL_CTX_flush_sessions(a
, 0);
3372 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3373 lh_SSL_SESSION_free(a
->sessions
);
3374 X509_STORE_free(a
->cert_store
);
3375 #ifndef OPENSSL_NO_CT
3376 CTLOG_STORE_free(a
->ctlog_store
);
3378 sk_SSL_CIPHER_free(a
->cipher_list
);
3379 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3380 sk_SSL_CIPHER_free(a
->tls13_ciphersuites
);
3381 ssl_cert_free(a
->cert
);
3382 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3383 sk_X509_NAME_pop_free(a
->client_ca_names
, X509_NAME_free
);
3384 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3385 a
->comp_methods
= NULL
;
3386 #ifndef OPENSSL_NO_SRTP
3387 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3389 #ifndef OPENSSL_NO_SRP
3390 SSL_CTX_SRP_CTX_free(a
);
3392 #ifndef OPENSSL_NO_ENGINE
3393 ENGINE_finish(a
->client_cert_engine
);
3396 #ifndef OPENSSL_NO_EC
3397 OPENSSL_free(a
->ext
.ecpointformats
);
3399 OPENSSL_free(a
->ext
.supportedgroups
);
3400 OPENSSL_free(a
->ext
.alpn
);
3401 OPENSSL_secure_free(a
->ext
.secure
);
3403 ssl_evp_md_free(a
->md5
);
3404 ssl_evp_md_free(a
->sha1
);
3406 for (j
= 0; j
< SSL_ENC_NUM_IDX
; j
++)
3407 ssl_evp_cipher_free(a
->ssl_cipher_methods
[j
]);
3408 for (j
= 0; j
< SSL_MD_NUM_IDX
; j
++)
3409 ssl_evp_md_free(a
->ssl_digest_methods
[j
]);
3410 for (j
= 0; j
< a
->group_list_len
; j
++) {
3411 OPENSSL_free(a
->group_list
[j
].tlsname
);
3412 OPENSSL_free(a
->group_list
[j
].realname
);
3413 OPENSSL_free(a
->group_list
[j
].algorithm
);
3415 OPENSSL_free(a
->group_list
);
3417 OPENSSL_free(a
->sigalg_lookup_cache
);
3419 CRYPTO_THREAD_lock_free(a
->lock
);
3421 OPENSSL_free(a
->propq
);
3426 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3428 ctx
->default_passwd_callback
= cb
;
3431 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3433 ctx
->default_passwd_callback_userdata
= u
;
3436 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3438 return ctx
->default_passwd_callback
;
3441 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3443 return ctx
->default_passwd_callback_userdata
;
3446 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3448 s
->default_passwd_callback
= cb
;
3451 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3453 s
->default_passwd_callback_userdata
= u
;
3456 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3458 return s
->default_passwd_callback
;
3461 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3463 return s
->default_passwd_callback_userdata
;
3466 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3467 int (*cb
) (X509_STORE_CTX
*, void *),
3470 ctx
->app_verify_callback
= cb
;
3471 ctx
->app_verify_arg
= arg
;
3474 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3475 int (*cb
) (int, X509_STORE_CTX
*))
3477 ctx
->verify_mode
= mode
;
3478 ctx
->default_verify_callback
= cb
;
3481 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3483 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3486 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3488 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3491 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3493 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3496 void ssl_set_masks(SSL
*s
)
3499 uint32_t *pvalid
= s
->s3
.tmp
.valid_flags
;
3500 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3501 unsigned long mask_k
, mask_a
;
3502 #ifndef OPENSSL_NO_EC
3503 int have_ecc_cert
, ecdsa_ok
;
3508 #ifndef OPENSSL_NO_DH
3509 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3514 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3515 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3516 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3517 #ifndef OPENSSL_NO_EC
3518 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3523 OSSL_TRACE4(TLS_CIPHER
, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3524 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3526 #ifndef OPENSSL_NO_GOST
3527 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3528 mask_k
|= SSL_kGOST
| SSL_kGOST18
;
3529 mask_a
|= SSL_aGOST12
;
3531 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3532 mask_k
|= SSL_kGOST
| SSL_kGOST18
;
3533 mask_a
|= SSL_aGOST12
;
3535 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3536 mask_k
|= SSL_kGOST
;
3537 mask_a
|= SSL_aGOST01
;
3548 * If we only have an RSA-PSS certificate allow RSA authentication
3549 * if TLS 1.2 and peer supports it.
3552 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3553 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3554 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3561 mask_a
|= SSL_aNULL
;
3564 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3565 * depending on the key usage extension.
3567 #ifndef OPENSSL_NO_EC
3568 if (have_ecc_cert
) {
3570 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3571 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3572 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3575 mask_a
|= SSL_aECDSA
;
3577 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3578 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3579 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3580 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3581 mask_a
|= SSL_aECDSA
;
3583 /* Allow Ed448 for TLS 1.2 if peer supports it */
3584 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED448
)
3585 && pvalid
[SSL_PKEY_ED448
] & CERT_PKEY_EXPLICIT_SIGN
3586 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3587 mask_a
|= SSL_aECDSA
;
3590 #ifndef OPENSSL_NO_EC
3591 mask_k
|= SSL_kECDHE
;
3594 #ifndef OPENSSL_NO_PSK
3597 if (mask_k
& SSL_kRSA
)
3598 mask_k
|= SSL_kRSAPSK
;
3599 if (mask_k
& SSL_kDHE
)
3600 mask_k
|= SSL_kDHEPSK
;
3601 if (mask_k
& SSL_kECDHE
)
3602 mask_k
|= SSL_kECDHEPSK
;
3605 s
->s3
.tmp
.mask_k
= mask_k
;
3606 s
->s3
.tmp
.mask_a
= mask_a
;
3609 #ifndef OPENSSL_NO_EC
3611 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3613 if (s
->s3
.tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3614 /* key usage, if present, must allow signing */
3615 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3616 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3617 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3621 return 1; /* all checks are ok */
3626 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3627 size_t *serverinfo_length
)
3629 CERT_PKEY
*cpk
= s
->s3
.tmp
.cert
;
3630 *serverinfo_length
= 0;
3632 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3635 *serverinfo
= cpk
->serverinfo
;
3636 *serverinfo_length
= cpk
->serverinfo_length
;
3640 void ssl_update_cache(SSL
*s
, int mode
)
3645 * If the session_id_length is 0, we are not supposed to cache it, and it
3646 * would be rather hard to do anyway :-)
3648 if (s
->session
->session_id_length
== 0)
3652 * If sid_ctx_length is 0 there is no specific application context
3653 * associated with this session, so when we try to resume it and
3654 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3655 * indication that this is actually a session for the proper application
3656 * context, and the *handshake* will fail, not just the resumption attempt.
3657 * Do not cache (on the server) these sessions that are not resumable
3658 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3660 if (s
->server
&& s
->session
->sid_ctx_length
== 0
3661 && (s
->verify_mode
& SSL_VERIFY_PEER
) != 0)
3664 i
= s
->session_ctx
->session_cache_mode
;
3666 && (!s
->hit
|| SSL_IS_TLS13(s
))) {
3668 * Add the session to the internal cache. In server side TLSv1.3 we
3669 * normally don't do this because by default it's a full stateless ticket
3670 * with only a dummy session id so there is no reason to cache it,
3672 * - we are doing early_data, in which case we cache so that we can
3674 * - the application has set a remove_session_cb so needs to know about
3675 * session timeout events
3676 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3678 if ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) == 0
3679 && (!SSL_IS_TLS13(s
)
3681 || (s
->max_early_data
> 0
3682 && (s
->options
& SSL_OP_NO_ANTI_REPLAY
) == 0)
3683 || s
->session_ctx
->remove_session_cb
!= NULL
3684 || (s
->options
& SSL_OP_NO_TICKET
) != 0))
3685 SSL_CTX_add_session(s
->session_ctx
, s
->session
);
3688 * Add the session to the external cache. We do this even in server side
3689 * TLSv1.3 without early data because some applications just want to
3690 * know about the creation of a session and aren't doing a full cache.
3692 if (s
->session_ctx
->new_session_cb
!= NULL
) {
3693 SSL_SESSION_up_ref(s
->session
);
3694 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3695 SSL_SESSION_free(s
->session
);
3699 /* auto flush every 255 connections */
3700 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3701 TSAN_QUALIFIER
int *stat
;
3702 if (mode
& SSL_SESS_CACHE_CLIENT
)
3703 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3705 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3706 if ((tsan_load(stat
) & 0xff) == 0xff)
3707 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3711 const SSL_METHOD
*SSL_CTX_get_ssl_method(const SSL_CTX
*ctx
)
3716 const SSL_METHOD
*SSL_get_ssl_method(const SSL
*s
)
3721 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3725 if (s
->method
!= meth
) {
3726 const SSL_METHOD
*sm
= s
->method
;
3727 int (*hf
) (SSL
*) = s
->handshake_func
;
3729 if (sm
->version
== meth
->version
)
3734 ret
= s
->method
->ssl_new(s
);
3737 if (hf
== sm
->ssl_connect
)
3738 s
->handshake_func
= meth
->ssl_connect
;
3739 else if (hf
== sm
->ssl_accept
)
3740 s
->handshake_func
= meth
->ssl_accept
;
3745 int SSL_get_error(const SSL
*s
, int i
)
3752 return SSL_ERROR_NONE
;
3755 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3756 * where we do encode the error
3758 if ((l
= ERR_peek_error()) != 0) {
3759 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3760 return SSL_ERROR_SYSCALL
;
3762 return SSL_ERROR_SSL
;
3765 if (SSL_want_read(s
)) {
3766 bio
= SSL_get_rbio(s
);
3767 if (BIO_should_read(bio
))
3768 return SSL_ERROR_WANT_READ
;
3769 else if (BIO_should_write(bio
))
3771 * This one doesn't make too much sense ... We never try to write
3772 * to the rbio, and an application program where rbio and wbio
3773 * are separate couldn't even know what it should wait for.
3774 * However if we ever set s->rwstate incorrectly (so that we have
3775 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3776 * wbio *are* the same, this test works around that bug; so it
3777 * might be safer to keep it.
3779 return SSL_ERROR_WANT_WRITE
;
3780 else if (BIO_should_io_special(bio
)) {
3781 reason
= BIO_get_retry_reason(bio
);
3782 if (reason
== BIO_RR_CONNECT
)
3783 return SSL_ERROR_WANT_CONNECT
;
3784 else if (reason
== BIO_RR_ACCEPT
)
3785 return SSL_ERROR_WANT_ACCEPT
;
3787 return SSL_ERROR_SYSCALL
; /* unknown */
3791 if (SSL_want_write(s
)) {
3792 /* Access wbio directly - in order to use the buffered bio if present */
3794 if (BIO_should_write(bio
))
3795 return SSL_ERROR_WANT_WRITE
;
3796 else if (BIO_should_read(bio
))
3798 * See above (SSL_want_read(s) with BIO_should_write(bio))
3800 return SSL_ERROR_WANT_READ
;
3801 else if (BIO_should_io_special(bio
)) {
3802 reason
= BIO_get_retry_reason(bio
);
3803 if (reason
== BIO_RR_CONNECT
)
3804 return SSL_ERROR_WANT_CONNECT
;
3805 else if (reason
== BIO_RR_ACCEPT
)
3806 return SSL_ERROR_WANT_ACCEPT
;
3808 return SSL_ERROR_SYSCALL
;
3811 if (SSL_want_x509_lookup(s
))
3812 return SSL_ERROR_WANT_X509_LOOKUP
;
3813 if (SSL_want_async(s
))
3814 return SSL_ERROR_WANT_ASYNC
;
3815 if (SSL_want_async_job(s
))
3816 return SSL_ERROR_WANT_ASYNC_JOB
;
3817 if (SSL_want_client_hello_cb(s
))
3818 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3820 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3821 (s
->s3
.warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3822 return SSL_ERROR_ZERO_RETURN
;
3824 return SSL_ERROR_SYSCALL
;
3827 static int ssl_do_handshake_intern(void *vargs
)
3829 struct ssl_async_args
*args
;
3832 args
= (struct ssl_async_args
*)vargs
;
3835 return s
->handshake_func(s
);
3838 int SSL_do_handshake(SSL
*s
)
3842 if (s
->handshake_func
== NULL
) {
3843 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3847 ossl_statem_check_finish_init(s
, -1);
3849 s
->method
->ssl_renegotiate_check(s
, 0);
3851 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3852 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3853 struct ssl_async_args args
;
3857 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3859 ret
= s
->handshake_func(s
);
3865 void SSL_set_accept_state(SSL
*s
)
3869 ossl_statem_clear(s
);
3870 s
->handshake_func
= s
->method
->ssl_accept
;
3874 void SSL_set_connect_state(SSL
*s
)
3878 ossl_statem_clear(s
);
3879 s
->handshake_func
= s
->method
->ssl_connect
;
3883 int ssl_undefined_function(SSL
*s
)
3885 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3889 int ssl_undefined_void_function(void)
3891 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3892 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3896 int ssl_undefined_const_function(const SSL
*s
)
3901 const SSL_METHOD
*ssl_bad_method(int ver
)
3903 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3907 const char *ssl_protocol_to_string(int version
)
3911 case TLS1_3_VERSION
:
3914 case TLS1_2_VERSION
:
3917 case TLS1_1_VERSION
:
3932 case DTLS1_2_VERSION
:
3940 const char *SSL_get_version(const SSL
*s
)
3942 return ssl_protocol_to_string(s
->version
);
3945 static int dup_ca_names(STACK_OF(X509_NAME
) **dst
, STACK_OF(X509_NAME
) *src
)
3947 STACK_OF(X509_NAME
) *sk
;
3956 if ((sk
= sk_X509_NAME_new_null()) == NULL
)
3958 for (i
= 0; i
< sk_X509_NAME_num(src
); i
++) {
3959 xn
= X509_NAME_dup(sk_X509_NAME_value(src
, i
));
3961 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3964 if (sk_X509_NAME_insert(sk
, xn
, i
) == 0) {
3966 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3975 SSL
*SSL_dup(SSL
*s
)
3980 /* If we're not quiescent, just up_ref! */
3981 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3982 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3987 * Otherwise, copy configuration state, and session if set.
3989 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3992 if (s
->session
!= NULL
) {
3994 * Arranges to share the same session via up_ref. This "copies"
3995 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3997 if (!SSL_copy_session_id(ret
, s
))
4001 * No session has been established yet, so we have to expect that
4002 * s->cert or ret->cert will be changed later -- they should not both
4003 * point to the same object, and thus we can't use
4004 * SSL_copy_session_id.
4006 if (!SSL_set_ssl_method(ret
, s
->method
))
4009 if (s
->cert
!= NULL
) {
4010 ssl_cert_free(ret
->cert
);
4011 ret
->cert
= ssl_cert_dup(s
->cert
);
4012 if (ret
->cert
== NULL
)
4016 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
4017 (int)s
->sid_ctx_length
))
4021 if (!ssl_dane_dup(ret
, s
))
4023 ret
->version
= s
->version
;
4024 ret
->options
= s
->options
;
4025 ret
->min_proto_version
= s
->min_proto_version
;
4026 ret
->max_proto_version
= s
->max_proto_version
;
4027 ret
->mode
= s
->mode
;
4028 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
4029 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
4030 ret
->msg_callback
= s
->msg_callback
;
4031 ret
->msg_callback_arg
= s
->msg_callback_arg
;
4032 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
4033 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
4034 ret
->generate_session_id
= s
->generate_session_id
;
4036 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
4038 /* copy app data, a little dangerous perhaps */
4039 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
4042 ret
->server
= s
->server
;
4043 if (s
->handshake_func
) {
4045 SSL_set_accept_state(ret
);
4047 SSL_set_connect_state(ret
);
4049 ret
->shutdown
= s
->shutdown
;
4052 ret
->default_passwd_callback
= s
->default_passwd_callback
;
4053 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
4055 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
4057 /* dup the cipher_list and cipher_list_by_id stacks */
4058 if (s
->cipher_list
!= NULL
) {
4059 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
4062 if (s
->cipher_list_by_id
!= NULL
)
4063 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
4067 /* Dup the client_CA list */
4068 if (!dup_ca_names(&ret
->ca_names
, s
->ca_names
)
4069 || !dup_ca_names(&ret
->client_ca_names
, s
->client_ca_names
))
4079 void ssl_clear_cipher_ctx(SSL
*s
)
4081 if (s
->enc_read_ctx
!= NULL
) {
4082 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
4083 s
->enc_read_ctx
= NULL
;
4085 if (s
->enc_write_ctx
!= NULL
) {
4086 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
4087 s
->enc_write_ctx
= NULL
;
4089 #ifndef OPENSSL_NO_COMP
4090 COMP_CTX_free(s
->expand
);
4092 COMP_CTX_free(s
->compress
);
4097 X509
*SSL_get_certificate(const SSL
*s
)
4099 if (s
->cert
!= NULL
)
4100 return s
->cert
->key
->x509
;
4105 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
4107 if (s
->cert
!= NULL
)
4108 return s
->cert
->key
->privatekey
;
4113 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
4115 if (ctx
->cert
!= NULL
)
4116 return ctx
->cert
->key
->x509
;
4121 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
4123 if (ctx
->cert
!= NULL
)
4124 return ctx
->cert
->key
->privatekey
;
4129 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
4131 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
4132 return s
->session
->cipher
;
4136 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
4138 return s
->s3
.tmp
.new_cipher
;
4141 const COMP_METHOD
*SSL_get_current_compression(const SSL
*s
)
4143 #ifndef OPENSSL_NO_COMP
4144 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
4150 const COMP_METHOD
*SSL_get_current_expansion(const SSL
*s
)
4152 #ifndef OPENSSL_NO_COMP
4153 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
4159 int ssl_init_wbio_buffer(SSL
*s
)
4163 if (s
->bbio
!= NULL
) {
4164 /* Already buffered. */
4168 bbio
= BIO_new(BIO_f_buffer());
4169 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
4171 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
4175 s
->wbio
= BIO_push(bbio
, s
->wbio
);
4180 int ssl_free_wbio_buffer(SSL
*s
)
4182 /* callers ensure s is never null */
4183 if (s
->bbio
== NULL
)
4186 s
->wbio
= BIO_pop(s
->wbio
);
4193 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
4195 ctx
->quiet_shutdown
= mode
;
4198 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
4200 return ctx
->quiet_shutdown
;
4203 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
4205 s
->quiet_shutdown
= mode
;
4208 int SSL_get_quiet_shutdown(const SSL
*s
)
4210 return s
->quiet_shutdown
;
4213 void SSL_set_shutdown(SSL
*s
, int mode
)
4218 int SSL_get_shutdown(const SSL
*s
)
4223 int SSL_version(const SSL
*s
)
4228 int SSL_client_version(const SSL
*s
)
4230 return s
->client_version
;
4233 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
4238 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
4241 if (ssl
->ctx
== ctx
)
4244 ctx
= ssl
->session_ctx
;
4245 new_cert
= ssl_cert_dup(ctx
->cert
);
4246 if (new_cert
== NULL
) {
4250 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
4251 ssl_cert_free(new_cert
);
4255 ssl_cert_free(ssl
->cert
);
4256 ssl
->cert
= new_cert
;
4259 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4260 * so setter APIs must prevent invalid lengths from entering the system.
4262 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
4266 * If the session ID context matches that of the parent SSL_CTX,
4267 * inherit it from the new SSL_CTX as well. If however the context does
4268 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4269 * leave it unchanged.
4271 if ((ssl
->ctx
!= NULL
) &&
4272 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
4273 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
4274 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
4275 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
4278 SSL_CTX_up_ref(ctx
);
4279 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
4285 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
4287 return X509_STORE_set_default_paths_with_libctx(ctx
->cert_store
,
4288 ctx
->libctx
, ctx
->propq
);
4291 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
4293 X509_LOOKUP
*lookup
;
4295 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
4299 /* We ignore errors, in case the directory doesn't exist */
4302 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4309 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
4311 X509_LOOKUP
*lookup
;
4313 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
4317 /* We ignore errors, in case the directory doesn't exist */
4320 X509_LOOKUP_load_file_with_libctx(lookup
, NULL
, X509_FILETYPE_DEFAULT
,
4321 ctx
->libctx
, ctx
->propq
);
4328 int SSL_CTX_set_default_verify_store(SSL_CTX
*ctx
)
4330 X509_LOOKUP
*lookup
;
4332 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_store());
4336 /* We ignore errors, in case the directory doesn't exist */
4339 X509_LOOKUP_add_store_with_libctx(lookup
, NULL
, ctx
->libctx
, ctx
->propq
);
4346 int SSL_CTX_load_verify_file(SSL_CTX
*ctx
, const char *CAfile
)
4348 return X509_STORE_load_file_with_libctx(ctx
->cert_store
, CAfile
,
4349 ctx
->libctx
, ctx
->propq
);
4352 int SSL_CTX_load_verify_dir(SSL_CTX
*ctx
, const char *CApath
)
4354 return X509_STORE_load_path(ctx
->cert_store
, CApath
);
4357 int SSL_CTX_load_verify_store(SSL_CTX
*ctx
, const char *CAstore
)
4359 return X509_STORE_load_store_with_libctx(ctx
->cert_store
, CAstore
,
4360 ctx
->libctx
, ctx
->propq
);
4363 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
4366 if (CAfile
== NULL
&& CApath
== NULL
)
4368 if (CAfile
!= NULL
&& !SSL_CTX_load_verify_file(ctx
, CAfile
))
4370 if (CApath
!= NULL
&& !SSL_CTX_load_verify_dir(ctx
, CApath
))
4375 void SSL_set_info_callback(SSL
*ssl
,
4376 void (*cb
) (const SSL
*ssl
, int type
, int val
))
4378 ssl
->info_callback
= cb
;
4382 * One compiler (Diab DCC) doesn't like argument names in returned function
4385 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
4388 return ssl
->info_callback
;
4391 void SSL_set_verify_result(SSL
*ssl
, long arg
)
4393 ssl
->verify_result
= arg
;
4396 long SSL_get_verify_result(const SSL
*ssl
)
4398 return ssl
->verify_result
;
4401 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4404 return sizeof(ssl
->s3
.client_random
);
4405 if (outlen
> sizeof(ssl
->s3
.client_random
))
4406 outlen
= sizeof(ssl
->s3
.client_random
);
4407 memcpy(out
, ssl
->s3
.client_random
, outlen
);
4411 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4414 return sizeof(ssl
->s3
.server_random
);
4415 if (outlen
> sizeof(ssl
->s3
.server_random
))
4416 outlen
= sizeof(ssl
->s3
.server_random
);
4417 memcpy(out
, ssl
->s3
.server_random
, outlen
);
4421 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
4422 unsigned char *out
, size_t outlen
)
4425 return session
->master_key_length
;
4426 if (outlen
> session
->master_key_length
)
4427 outlen
= session
->master_key_length
;
4428 memcpy(out
, session
->master_key
, outlen
);
4432 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
4435 if (len
> sizeof(sess
->master_key
))
4438 memcpy(sess
->master_key
, in
, len
);
4439 sess
->master_key_length
= len
;
4444 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4446 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4449 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4451 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4454 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4456 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4459 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4461 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4464 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4466 return ctx
->cert_store
;
4469 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4471 X509_STORE_free(ctx
->cert_store
);
4472 ctx
->cert_store
= store
;
4475 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4478 X509_STORE_up_ref(store
);
4479 SSL_CTX_set_cert_store(ctx
, store
);
4482 int SSL_want(const SSL
*s
)
4488 * \brief Set the callback for generating temporary DH keys.
4489 * \param ctx the SSL context.
4490 * \param dh the callback
4493 #ifndef OPENSSL_NO_DH
4494 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4495 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4498 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4501 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4504 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4508 #ifndef OPENSSL_NO_PSK
4509 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4511 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4512 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4515 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4516 if (identity_hint
!= NULL
) {
4517 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4518 if (ctx
->cert
->psk_identity_hint
== NULL
)
4521 ctx
->cert
->psk_identity_hint
= NULL
;
4525 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4530 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4531 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4534 OPENSSL_free(s
->cert
->psk_identity_hint
);
4535 if (identity_hint
!= NULL
) {
4536 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4537 if (s
->cert
->psk_identity_hint
== NULL
)
4540 s
->cert
->psk_identity_hint
= NULL
;
4544 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4546 if (s
== NULL
|| s
->session
== NULL
)
4548 return s
->session
->psk_identity_hint
;
4551 const char *SSL_get_psk_identity(const SSL
*s
)
4553 if (s
== NULL
|| s
->session
== NULL
)
4555 return s
->session
->psk_identity
;
4558 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4560 s
->psk_client_callback
= cb
;
4563 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4565 ctx
->psk_client_callback
= cb
;
4568 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4570 s
->psk_server_callback
= cb
;
4573 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4575 ctx
->psk_server_callback
= cb
;
4579 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4581 s
->psk_find_session_cb
= cb
;
4584 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4585 SSL_psk_find_session_cb_func cb
)
4587 ctx
->psk_find_session_cb
= cb
;
4590 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4592 s
->psk_use_session_cb
= cb
;
4595 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4596 SSL_psk_use_session_cb_func cb
)
4598 ctx
->psk_use_session_cb
= cb
;
4601 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4602 void (*cb
) (int write_p
, int version
,
4603 int content_type
, const void *buf
,
4604 size_t len
, SSL
*ssl
, void *arg
))
4606 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4609 void SSL_set_msg_callback(SSL
*ssl
,
4610 void (*cb
) (int write_p
, int version
,
4611 int content_type
, const void *buf
,
4612 size_t len
, SSL
*ssl
, void *arg
))
4614 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4617 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4618 int (*cb
) (SSL
*ssl
,
4622 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4623 (void (*)(void))cb
);
4626 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4627 int (*cb
) (SSL
*ssl
,
4628 int is_forward_secure
))
4630 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4631 (void (*)(void))cb
);
4634 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4635 size_t (*cb
) (SSL
*ssl
, int type
,
4636 size_t len
, void *arg
))
4638 ctx
->record_padding_cb
= cb
;
4641 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4643 ctx
->record_padding_arg
= arg
;
4646 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX
*ctx
)
4648 return ctx
->record_padding_arg
;
4651 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4653 /* block size of 0 or 1 is basically no padding */
4654 if (block_size
== 1)
4655 ctx
->block_padding
= 0;
4656 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4657 ctx
->block_padding
= block_size
;
4663 int SSL_set_record_padding_callback(SSL
*ssl
,
4664 size_t (*cb
) (SSL
*ssl
, int type
,
4665 size_t len
, void *arg
))
4669 b
= SSL_get_wbio(ssl
);
4670 if (b
== NULL
|| !BIO_get_ktls_send(b
)) {
4671 ssl
->record_padding_cb
= cb
;
4677 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4679 ssl
->record_padding_arg
= arg
;
4682 void *SSL_get_record_padding_callback_arg(const SSL
*ssl
)
4684 return ssl
->record_padding_arg
;
4687 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4689 /* block size of 0 or 1 is basically no padding */
4690 if (block_size
== 1)
4691 ssl
->block_padding
= 0;
4692 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4693 ssl
->block_padding
= block_size
;
4699 int SSL_set_num_tickets(SSL
*s
, size_t num_tickets
)
4701 s
->num_tickets
= num_tickets
;
4706 size_t SSL_get_num_tickets(const SSL
*s
)
4708 return s
->num_tickets
;
4711 int SSL_CTX_set_num_tickets(SSL_CTX
*ctx
, size_t num_tickets
)
4713 ctx
->num_tickets
= num_tickets
;
4718 size_t SSL_CTX_get_num_tickets(const SSL_CTX
*ctx
)
4720 return ctx
->num_tickets
;
4724 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4725 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4726 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4727 * Returns the newly allocated ctx;
4730 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4732 ssl_clear_hash_ctx(hash
);
4733 *hash
= EVP_MD_CTX_new();
4734 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4735 EVP_MD_CTX_free(*hash
);
4742 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4745 EVP_MD_CTX_free(*hash
);
4749 /* Retrieve handshake hashes */
4750 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4753 EVP_MD_CTX
*ctx
= NULL
;
4754 EVP_MD_CTX
*hdgst
= s
->s3
.handshake_dgst
;
4755 int hashleni
= EVP_MD_CTX_size(hdgst
);
4758 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4759 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4760 ERR_R_INTERNAL_ERROR
);
4764 ctx
= EVP_MD_CTX_new();
4768 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4769 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4770 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4771 ERR_R_INTERNAL_ERROR
);
4775 *hashlen
= hashleni
;
4779 EVP_MD_CTX_free(ctx
);
4783 int SSL_session_reused(const SSL
*s
)
4788 int SSL_is_server(const SSL
*s
)
4793 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4794 void SSL_set_debug(SSL
*s
, int debug
)
4796 /* Old function was do-nothing anyway... */
4802 void SSL_set_security_level(SSL
*s
, int level
)
4804 s
->cert
->sec_level
= level
;
4807 int SSL_get_security_level(const SSL
*s
)
4809 return s
->cert
->sec_level
;
4812 void SSL_set_security_callback(SSL
*s
,
4813 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4814 int op
, int bits
, int nid
,
4815 void *other
, void *ex
))
4817 s
->cert
->sec_cb
= cb
;
4820 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4821 const SSL_CTX
*ctx
, int op
,
4822 int bits
, int nid
, void *other
,
4824 return s
->cert
->sec_cb
;
4827 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4829 s
->cert
->sec_ex
= ex
;
4832 void *SSL_get0_security_ex_data(const SSL
*s
)
4834 return s
->cert
->sec_ex
;
4837 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4839 ctx
->cert
->sec_level
= level
;
4842 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4844 return ctx
->cert
->sec_level
;
4847 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4848 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4849 int op
, int bits
, int nid
,
4850 void *other
, void *ex
))
4852 ctx
->cert
->sec_cb
= cb
;
4855 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4861 return ctx
->cert
->sec_cb
;
4864 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4866 ctx
->cert
->sec_ex
= ex
;
4869 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4871 return ctx
->cert
->sec_ex
;
4875 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4876 * can return unsigned long, instead of the generic long return value from the
4877 * control interface.
4879 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4881 return ctx
->options
;
4884 unsigned long SSL_get_options(const SSL
*s
)
4889 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4891 return ctx
->options
|= op
;
4894 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4896 return s
->options
|= op
;
4899 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4901 return ctx
->options
&= ~op
;
4904 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4906 return s
->options
&= ~op
;
4909 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4911 return s
->verified_chain
;
4914 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4916 #ifndef OPENSSL_NO_CT
4919 * Moves SCTs from the |src| stack to the |dst| stack.
4920 * The source of each SCT will be set to |origin|.
4921 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4923 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4925 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4926 sct_source_t origin
)
4932 *dst
= sk_SCT_new_null();
4934 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4939 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4940 if (SCT_set_source(sct
, origin
) != 1)
4943 if (sk_SCT_push(*dst
, sct
) <= 0)
4951 sk_SCT_push(src
, sct
); /* Put the SCT back */
4956 * Look for data collected during ServerHello and parse if found.
4957 * Returns the number of SCTs extracted.
4959 static int ct_extract_tls_extension_scts(SSL
*s
)
4961 int scts_extracted
= 0;
4963 if (s
->ext
.scts
!= NULL
) {
4964 const unsigned char *p
= s
->ext
.scts
;
4965 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4967 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4969 SCT_LIST_free(scts
);
4972 return scts_extracted
;
4976 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4977 * contains an SCT X509 extension. They will be stored in |s->scts|.
4979 * - The number of SCTs extracted, assuming an OCSP response exists.
4980 * - 0 if no OCSP response exists or it contains no SCTs.
4981 * - A negative integer if an error occurs.
4983 static int ct_extract_ocsp_response_scts(SSL
*s
)
4985 # ifndef OPENSSL_NO_OCSP
4986 int scts_extracted
= 0;
4987 const unsigned char *p
;
4988 OCSP_BASICRESP
*br
= NULL
;
4989 OCSP_RESPONSE
*rsp
= NULL
;
4990 STACK_OF(SCT
) *scts
= NULL
;
4993 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4996 p
= s
->ext
.ocsp
.resp
;
4997 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
5001 br
= OCSP_response_get1_basic(rsp
);
5005 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
5006 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
5012 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
5014 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
5015 if (scts_extracted
< 0)
5019 SCT_LIST_free(scts
);
5020 OCSP_BASICRESP_free(br
);
5021 OCSP_RESPONSE_free(rsp
);
5022 return scts_extracted
;
5024 /* Behave as if no OCSP response exists */
5030 * Attempts to extract SCTs from the peer certificate.
5031 * Return the number of SCTs extracted, or a negative integer if an error
5034 static int ct_extract_x509v3_extension_scts(SSL
*s
)
5036 int scts_extracted
= 0;
5037 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
5040 STACK_OF(SCT
) *scts
=
5041 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
5044 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
5046 SCT_LIST_free(scts
);
5049 return scts_extracted
;
5053 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5054 * response (if it exists) and X509v3 extensions in the certificate.
5055 * Returns NULL if an error occurs.
5057 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
5059 if (!s
->scts_parsed
) {
5060 if (ct_extract_tls_extension_scts(s
) < 0 ||
5061 ct_extract_ocsp_response_scts(s
) < 0 ||
5062 ct_extract_x509v3_extension_scts(s
) < 0)
5072 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
5073 const STACK_OF(SCT
) *scts
, void *unused_arg
)
5078 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
5079 const STACK_OF(SCT
) *scts
, void *unused_arg
)
5081 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
5084 for (i
= 0; i
< count
; ++i
) {
5085 SCT
*sct
= sk_SCT_value(scts
, i
);
5086 int status
= SCT_get_validation_status(sct
);
5088 if (status
== SCT_VALIDATION_STATUS_VALID
)
5091 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
5095 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
5099 * Since code exists that uses the custom extension handler for CT, look
5100 * for this and throw an error if they have already registered to use CT.
5102 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
5103 TLSEXT_TYPE_signed_certificate_timestamp
))
5105 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
5106 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
5110 if (callback
!= NULL
) {
5112 * If we are validating CT, then we MUST accept SCTs served via OCSP
5114 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
5118 s
->ct_validation_callback
= callback
;
5119 s
->ct_validation_callback_arg
= arg
;
5124 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
5125 ssl_ct_validation_cb callback
, void *arg
)
5128 * Since code exists that uses the custom extension handler for CT, look for
5129 * this and throw an error if they have already registered to use CT.
5131 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
5132 TLSEXT_TYPE_signed_certificate_timestamp
))
5134 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
5135 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
5139 ctx
->ct_validation_callback
= callback
;
5140 ctx
->ct_validation_callback_arg
= arg
;
5144 int SSL_ct_is_enabled(const SSL
*s
)
5146 return s
->ct_validation_callback
!= NULL
;
5149 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
5151 return ctx
->ct_validation_callback
!= NULL
;
5154 int ssl_validate_ct(SSL
*s
)
5157 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
5159 SSL_DANE
*dane
= &s
->dane
;
5160 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
5161 const STACK_OF(SCT
) *scts
;
5164 * If no callback is set, the peer is anonymous, or its chain is invalid,
5165 * skip SCT validation - just return success. Applications that continue
5166 * handshakes without certificates, with unverified chains, or pinned leaf
5167 * certificates are outside the scope of the WebPKI and CT.
5169 * The above exclusions notwithstanding the vast majority of peers will
5170 * have rather ordinary certificate chains validated by typical
5171 * applications that perform certificate verification and therefore will
5172 * process SCTs when enabled.
5174 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
5175 s
->verify_result
!= X509_V_OK
||
5176 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
5180 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5181 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5183 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
5184 switch (dane
->mtlsa
->usage
) {
5185 case DANETLS_USAGE_DANE_TA
:
5186 case DANETLS_USAGE_DANE_EE
:
5191 ctx
= CT_POLICY_EVAL_CTX_new_with_libctx(s
->ctx
->libctx
, s
->ctx
->propq
);
5193 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
5194 ERR_R_MALLOC_FAILURE
);
5198 issuer
= sk_X509_value(s
->verified_chain
, 1);
5199 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
5200 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
5201 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
5202 CT_POLICY_EVAL_CTX_set_time(
5203 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
5205 scts
= SSL_get0_peer_scts(s
);
5208 * This function returns success (> 0) only when all the SCTs are valid, 0
5209 * when some are invalid, and < 0 on various internal errors (out of
5210 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5211 * reason to abort the handshake, that decision is up to the callback.
5212 * Therefore, we error out only in the unexpected case that the return
5213 * value is negative.
5215 * XXX: One might well argue that the return value of this function is an
5216 * unfortunate design choice. Its job is only to determine the validation
5217 * status of each of the provided SCTs. So long as it correctly separates
5218 * the wheat from the chaff it should return success. Failure in this case
5219 * ought to correspond to an inability to carry out its duties.
5221 if (SCT_LIST_validate(scts
, ctx
) < 0) {
5222 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5223 SSL_R_SCT_VERIFICATION_FAILED
);
5227 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
5229 ret
= 0; /* This function returns 0 on failure */
5231 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5232 SSL_R_CALLBACK_FAILED
);
5235 CT_POLICY_EVAL_CTX_free(ctx
);
5237 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5238 * failure return code here. Also the application may wish the complete
5239 * the handshake, and then disconnect cleanly at a higher layer, after
5240 * checking the verification status of the completed connection.
5242 * We therefore force a certificate verification failure which will be
5243 * visible via SSL_get_verify_result() and cached as part of any resumed
5246 * Note: the permissive callback is for information gathering only, always
5247 * returns success, and does not affect verification status. Only the
5248 * strict callback or a custom application-specified callback can trigger
5249 * connection failure or record a verification error.
5252 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
5256 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
5258 switch (validation_mode
) {
5260 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5262 case SSL_CT_VALIDATION_PERMISSIVE
:
5263 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
5264 case SSL_CT_VALIDATION_STRICT
:
5265 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
5269 int SSL_enable_ct(SSL
*s
, int validation_mode
)
5271 switch (validation_mode
) {
5273 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5275 case SSL_CT_VALIDATION_PERMISSIVE
:
5276 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
5277 case SSL_CT_VALIDATION_STRICT
:
5278 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
5282 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
5284 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
5287 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
5289 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
5292 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
5294 CTLOG_STORE_free(ctx
->ctlog_store
);
5295 ctx
->ctlog_store
= logs
;
5298 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
5300 return ctx
->ctlog_store
;
5303 #endif /* OPENSSL_NO_CT */
5305 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
5308 c
->client_hello_cb
= cb
;
5309 c
->client_hello_cb_arg
= arg
;
5312 int SSL_client_hello_isv2(SSL
*s
)
5314 if (s
->clienthello
== NULL
)
5316 return s
->clienthello
->isv2
;
5319 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
5321 if (s
->clienthello
== NULL
)
5323 return s
->clienthello
->legacy_version
;
5326 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
5328 if (s
->clienthello
== NULL
)
5331 *out
= s
->clienthello
->random
;
5332 return SSL3_RANDOM_SIZE
;
5335 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
5337 if (s
->clienthello
== NULL
)
5340 *out
= s
->clienthello
->session_id
;
5341 return s
->clienthello
->session_id_len
;
5344 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
5346 if (s
->clienthello
== NULL
)
5349 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
5350 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
5353 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
5355 if (s
->clienthello
== NULL
)
5358 *out
= s
->clienthello
->compressions
;
5359 return s
->clienthello
->compressions_len
;
5362 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
5368 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
5370 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5371 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5380 if ((present
= OPENSSL_malloc(sizeof(*present
) * num
)) == NULL
) {
5381 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT
,
5382 ERR_R_MALLOC_FAILURE
);
5385 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5386 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5388 if (ext
->received_order
>= num
)
5390 present
[ext
->received_order
] = ext
->type
;
5397 OPENSSL_free(present
);
5401 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
5407 if (s
->clienthello
== NULL
)
5409 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
5410 r
= s
->clienthello
->pre_proc_exts
+ i
;
5411 if (r
->present
&& r
->type
== type
) {
5413 *out
= PACKET_data(&r
->data
);
5415 *outlen
= PACKET_remaining(&r
->data
);
5422 int SSL_free_buffers(SSL
*ssl
)
5424 RECORD_LAYER
*rl
= &ssl
->rlayer
;
5426 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
5429 RECORD_LAYER_release(rl
);
5433 int SSL_alloc_buffers(SSL
*ssl
)
5435 return ssl3_setup_buffers(ssl
);
5438 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
5440 ctx
->keylog_callback
= cb
;
5443 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
5445 return ctx
->keylog_callback
;
5448 static int nss_keylog_int(const char *prefix
,
5450 const uint8_t *parameter_1
,
5451 size_t parameter_1_len
,
5452 const uint8_t *parameter_2
,
5453 size_t parameter_2_len
)
5456 char *cursor
= NULL
;
5461 if (ssl
->ctx
->keylog_callback
== NULL
)
5465 * Our output buffer will contain the following strings, rendered with
5466 * space characters in between, terminated by a NULL character: first the
5467 * prefix, then the first parameter, then the second parameter. The
5468 * meaning of each parameter depends on the specific key material being
5469 * logged. Note that the first and second parameters are encoded in
5470 * hexadecimal, so we need a buffer that is twice their lengths.
5472 prefix_len
= strlen(prefix
);
5473 out_len
= prefix_len
+ (2 * parameter_1_len
) + (2 * parameter_2_len
) + 3;
5474 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
5475 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
5476 ERR_R_MALLOC_FAILURE
);
5480 strcpy(cursor
, prefix
);
5481 cursor
+= prefix_len
;
5484 for (i
= 0; i
< parameter_1_len
; i
++) {
5485 sprintf(cursor
, "%02x", parameter_1
[i
]);
5490 for (i
= 0; i
< parameter_2_len
; i
++) {
5491 sprintf(cursor
, "%02x", parameter_2
[i
]);
5496 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5497 OPENSSL_clear_free(out
, out_len
);
5502 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5503 const uint8_t *encrypted_premaster
,
5504 size_t encrypted_premaster_len
,
5505 const uint8_t *premaster
,
5506 size_t premaster_len
)
5508 if (encrypted_premaster_len
< 8) {
5509 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5510 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5514 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5515 return nss_keylog_int("RSA",
5517 encrypted_premaster
,
5523 int ssl_log_secret(SSL
*ssl
,
5525 const uint8_t *secret
,
5528 return nss_keylog_int(label
,
5530 ssl
->s3
.client_random
,
5536 #define SSLV2_CIPHER_LEN 3
5538 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5542 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5544 if (PACKET_remaining(cipher_suites
) == 0) {
5545 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5546 SSL_R_NO_CIPHERS_SPECIFIED
);
5550 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5551 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5552 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5556 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5557 s
->s3
.tmp
.ciphers_raw
= NULL
;
5558 s
->s3
.tmp
.ciphers_rawlen
= 0;
5561 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5562 PACKET sslv2ciphers
= *cipher_suites
;
5563 unsigned int leadbyte
;
5567 * We store the raw ciphers list in SSLv3+ format so we need to do some
5568 * preprocessing to convert the list first. If there are any SSLv2 only
5569 * ciphersuites with a non-zero leading byte then we are going to
5570 * slightly over allocate because we won't store those. But that isn't a
5573 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5574 s
->s3
.tmp
.ciphers_raw
= raw
;
5576 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5577 ERR_R_MALLOC_FAILURE
);
5580 for (s
->s3
.tmp
.ciphers_rawlen
= 0;
5581 PACKET_remaining(&sslv2ciphers
) > 0;
5582 raw
+= TLS_CIPHER_LEN
) {
5583 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5585 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5588 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5589 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5591 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5592 s
->s3
.tmp
.ciphers_raw
= NULL
;
5593 s
->s3
.tmp
.ciphers_rawlen
= 0;
5597 s
->s3
.tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5599 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
.tmp
.ciphers_raw
,
5600 &s
->s3
.tmp
.ciphers_rawlen
)) {
5601 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5602 ERR_R_INTERNAL_ERROR
);
5608 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5609 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5610 STACK_OF(SSL_CIPHER
) **scsvs
)
5614 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5616 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5619 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5620 STACK_OF(SSL_CIPHER
) **skp
,
5621 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5622 int sslv2format
, int fatal
)
5624 const SSL_CIPHER
*c
;
5625 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5626 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5628 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5629 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5631 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5633 if (PACKET_remaining(cipher_suites
) == 0) {
5635 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5636 SSL_R_NO_CIPHERS_SPECIFIED
);
5638 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5642 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5644 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5645 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5647 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5648 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5652 sk
= sk_SSL_CIPHER_new_null();
5653 scsvs
= sk_SSL_CIPHER_new_null();
5654 if (sk
== NULL
|| scsvs
== NULL
) {
5656 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5657 ERR_R_MALLOC_FAILURE
);
5659 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5663 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5665 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5666 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5667 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5669 if (sslv2format
&& cipher
[0] != '\0')
5672 /* For SSLv2-compat, ignore leading 0-byte. */
5673 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5675 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5676 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5678 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5679 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5681 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5686 if (PACKET_remaining(cipher_suites
) > 0) {
5688 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5691 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5698 sk_SSL_CIPHER_free(sk
);
5699 if (scsvs_out
!= NULL
)
5702 sk_SSL_CIPHER_free(scsvs
);
5705 sk_SSL_CIPHER_free(sk
);
5706 sk_SSL_CIPHER_free(scsvs
);
5710 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5712 ctx
->max_early_data
= max_early_data
;
5717 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5719 return ctx
->max_early_data
;
5722 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5724 s
->max_early_data
= max_early_data
;
5729 uint32_t SSL_get_max_early_data(const SSL
*s
)
5731 return s
->max_early_data
;
5734 int SSL_CTX_set_recv_max_early_data(SSL_CTX
*ctx
, uint32_t recv_max_early_data
)
5736 ctx
->recv_max_early_data
= recv_max_early_data
;
5741 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX
*ctx
)
5743 return ctx
->recv_max_early_data
;
5746 int SSL_set_recv_max_early_data(SSL
*s
, uint32_t recv_max_early_data
)
5748 s
->recv_max_early_data
= recv_max_early_data
;
5753 uint32_t SSL_get_recv_max_early_data(const SSL
*s
)
5755 return s
->recv_max_early_data
;
5758 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5760 /* Return any active Max Fragment Len extension */
5761 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5762 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5764 /* return current SSL connection setting */
5765 return ssl
->max_send_fragment
;
5768 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5770 /* Return a value regarding an active Max Fragment Len extension */
5771 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5772 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5773 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5775 /* else limit |split_send_fragment| to current |max_send_fragment| */
5776 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5777 return ssl
->max_send_fragment
;
5779 /* return current SSL connection setting */
5780 return ssl
->split_send_fragment
;
5783 int SSL_stateless(SSL
*s
)
5787 /* Ensure there is no state left over from a previous invocation */
5793 s
->s3
.flags
|= TLS1_FLAGS_STATELESS
;
5794 ret
= SSL_accept(s
);
5795 s
->s3
.flags
&= ~TLS1_FLAGS_STATELESS
;
5797 if (ret
> 0 && s
->ext
.cookieok
)
5800 if (s
->hello_retry_request
== SSL_HRR_PENDING
&& !ossl_statem_in_error(s
))
5806 void SSL_CTX_set_post_handshake_auth(SSL_CTX
*ctx
, int val
)
5808 ctx
->pha_enabled
= val
;
5811 void SSL_set_post_handshake_auth(SSL
*ssl
, int val
)
5813 ssl
->pha_enabled
= val
;
5816 int SSL_verify_client_post_handshake(SSL
*ssl
)
5818 if (!SSL_IS_TLS13(ssl
)) {
5819 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_WRONG_SSL_VERSION
);
5823 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_NOT_SERVER
);
5827 if (!SSL_is_init_finished(ssl
)) {
5828 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_STILL_IN_INIT
);
5832 switch (ssl
->post_handshake_auth
) {
5834 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_EXTENSION_NOT_RECEIVED
);
5837 case SSL_PHA_EXT_SENT
:
5838 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, ERR_R_INTERNAL_ERROR
);
5840 case SSL_PHA_EXT_RECEIVED
:
5842 case SSL_PHA_REQUEST_PENDING
:
5843 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_PENDING
);
5845 case SSL_PHA_REQUESTED
:
5846 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_SENT
);
5850 ssl
->post_handshake_auth
= SSL_PHA_REQUEST_PENDING
;
5852 /* checks verify_mode and algorithm_auth */
5853 if (!send_certificate_request(ssl
)) {
5854 ssl
->post_handshake_auth
= SSL_PHA_EXT_RECEIVED
; /* restore on error */
5855 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_INVALID_CONFIG
);
5859 ossl_statem_set_in_init(ssl
, 1);
5863 int SSL_CTX_set_session_ticket_cb(SSL_CTX
*ctx
,
5864 SSL_CTX_generate_session_ticket_fn gen_cb
,
5865 SSL_CTX_decrypt_session_ticket_fn dec_cb
,
5868 ctx
->generate_ticket_cb
= gen_cb
;
5869 ctx
->decrypt_ticket_cb
= dec_cb
;
5870 ctx
->ticket_cb_data
= arg
;
5874 void SSL_CTX_set_allow_early_data_cb(SSL_CTX
*ctx
,
5875 SSL_allow_early_data_cb_fn cb
,
5878 ctx
->allow_early_data_cb
= cb
;
5879 ctx
->allow_early_data_cb_data
= arg
;
5882 void SSL_set_allow_early_data_cb(SSL
*s
,
5883 SSL_allow_early_data_cb_fn cb
,
5886 s
->allow_early_data_cb
= cb
;
5887 s
->allow_early_data_cb_data
= arg
;
5890 const EVP_CIPHER
*ssl_evp_cipher_fetch(OPENSSL_CTX
*libctx
,
5892 const char *properties
)
5896 #ifndef OPENSSL_NO_ENGINE
5900 * If there is an Engine available for this cipher we use the "implicit"
5901 * form to ensure we use that engine later.
5903 eng
= ENGINE_get_cipher_engine(nid
);
5906 return EVP_get_cipherbynid(nid
);
5910 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5912 ciph
= EVP_CIPHER_fetch(libctx
, OBJ_nid2sn(nid
), properties
);
5918 int ssl_evp_cipher_up_ref(const EVP_CIPHER
*cipher
)
5920 /* Don't up-ref an implicit EVP_CIPHER */
5921 if (EVP_CIPHER_provider(cipher
) == NULL
)
5925 * The cipher was explicitly fetched and therefore it is safe to cast
5928 return EVP_CIPHER_up_ref((EVP_CIPHER
*)cipher
);
5931 void ssl_evp_cipher_free(const EVP_CIPHER
*cipher
)
5936 if (EVP_CIPHER_provider(cipher
) != NULL
) {
5938 * The cipher was explicitly fetched and therefore it is safe to cast
5941 EVP_CIPHER_free((EVP_CIPHER
*)cipher
);
5945 const EVP_MD
*ssl_evp_md_fetch(OPENSSL_CTX
*libctx
,
5947 const char *properties
)
5951 #ifndef OPENSSL_NO_ENGINE
5955 * If there is an Engine available for this digest we use the "implicit"
5956 * form to ensure we use that engine later.
5958 eng
= ENGINE_get_digest_engine(nid
);
5961 return EVP_get_digestbynid(nid
);
5965 /* Otherwise we do an explicit fetch */
5967 md
= EVP_MD_fetch(libctx
, OBJ_nid2sn(nid
), properties
);
5972 int ssl_evp_md_up_ref(const EVP_MD
*md
)
5974 /* Don't up-ref an implicit EVP_MD */
5975 if (EVP_MD_provider(md
) == NULL
)
5979 * The digest was explicitly fetched and therefore it is safe to cast
5982 return EVP_MD_up_ref((EVP_MD
*)md
);
5985 void ssl_evp_md_free(const EVP_MD
*md
)
5990 if (EVP_MD_provider(md
) != NULL
) {
5992 * The digest was explicitly fetched and therefore it is safe to cast
5995 EVP_MD_free((EVP_MD
*)md
);