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"
31 static int ssl_undefined_function_1(SSL
*ssl
, SSL3_RECORD
*r
, size_t s
, int t
,
32 SSL_MAC_BUF
*mac
, size_t macsize
)
34 return ssl_undefined_function(ssl
);
37 static int ssl_undefined_function_2(SSL
*ssl
, SSL3_RECORD
*r
, unsigned char *s
,
40 return ssl_undefined_function(ssl
);
43 static int ssl_undefined_function_3(SSL
*ssl
, unsigned char *r
,
44 unsigned char *s
, size_t t
, size_t *u
)
46 return ssl_undefined_function(ssl
);
49 static int ssl_undefined_function_4(SSL
*ssl
, int r
)
51 return ssl_undefined_function(ssl
);
54 static size_t ssl_undefined_function_5(SSL
*ssl
, const char *r
, size_t s
,
57 return ssl_undefined_function(ssl
);
60 static int ssl_undefined_function_6(int r
)
62 return ssl_undefined_function(NULL
);
65 static int ssl_undefined_function_7(SSL
*ssl
, unsigned char *r
, size_t s
,
66 const char *t
, size_t u
,
67 const unsigned char *v
, size_t w
, int x
)
69 return ssl_undefined_function(ssl
);
72 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
73 ssl_undefined_function_1
,
74 ssl_undefined_function_2
,
75 ssl_undefined_function
,
76 ssl_undefined_function_3
,
77 ssl_undefined_function_4
,
78 ssl_undefined_function_5
,
79 NULL
, /* client_finished_label */
80 0, /* client_finished_label_len */
81 NULL
, /* server_finished_label */
82 0, /* server_finished_label_len */
83 ssl_undefined_function_6
,
84 ssl_undefined_function_7
,
87 struct ssl_async_args
{
91 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
93 int (*func_read
) (SSL
*, void *, size_t, size_t *);
94 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
95 int (*func_other
) (SSL
*);
105 DANETLS_MATCHING_FULL
, 0, NID_undef
108 DANETLS_MATCHING_2256
, 1, NID_sha256
111 DANETLS_MATCHING_2512
, 2, NID_sha512
115 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
117 const EVP_MD
**mdevp
;
119 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
120 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
123 if (dctx
->mdevp
!= NULL
)
126 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
127 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
129 if (mdord
== NULL
|| mdevp
== NULL
) {
132 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
136 /* Install default entries */
137 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
140 if (dane_mds
[i
].nid
== NID_undef
||
141 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
143 mdevp
[dane_mds
[i
].mtype
] = md
;
144 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
154 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
156 OPENSSL_free(dctx
->mdevp
);
159 OPENSSL_free(dctx
->mdord
);
164 static void tlsa_free(danetls_record
*t
)
168 OPENSSL_free(t
->data
);
169 EVP_PKEY_free(t
->spki
);
173 static void dane_final(SSL_DANE
*dane
)
175 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
178 sk_X509_pop_free(dane
->certs
, X509_free
);
181 X509_free(dane
->mcert
);
189 * dane_copy - Copy dane configuration, sans verification state.
191 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
196 if (!DANETLS_ENABLED(&from
->dane
))
199 num
= sk_danetls_record_num(from
->dane
.trecs
);
200 dane_final(&to
->dane
);
201 to
->dane
.flags
= from
->dane
.flags
;
202 to
->dane
.dctx
= &to
->ctx
->dane
;
203 to
->dane
.trecs
= sk_danetls_record_new_reserve(NULL
, num
);
205 if (to
->dane
.trecs
== NULL
) {
206 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
210 for (i
= 0; i
< num
; ++i
) {
211 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
213 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
214 t
->data
, t
->dlen
) <= 0)
220 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
221 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
225 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
226 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
230 if (mtype
> dctx
->mdmax
) {
231 const EVP_MD
**mdevp
;
233 int n
= ((int)mtype
) + 1;
235 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
237 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
242 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
244 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
249 /* Zero-fill any gaps */
250 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
258 dctx
->mdevp
[mtype
] = md
;
259 /* Coerce ordinal of disabled matching types to 0 */
260 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
265 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
267 if (mtype
> dane
->dctx
->mdmax
)
269 return dane
->dctx
->mdevp
[mtype
];
272 static int dane_tlsa_add(SSL_DANE
*dane
,
275 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
278 const EVP_MD
*md
= NULL
;
279 int ilen
= (int)dlen
;
283 if (dane
->trecs
== NULL
) {
284 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
288 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
289 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
293 if (usage
> DANETLS_USAGE_LAST
) {
294 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
298 if (selector
> DANETLS_SELECTOR_LAST
) {
299 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
303 if (mtype
!= DANETLS_MATCHING_FULL
) {
304 md
= tlsa_md_get(dane
, mtype
);
306 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
311 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
312 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
316 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
320 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
321 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
326 t
->selector
= selector
;
328 t
->data
= OPENSSL_malloc(dlen
);
329 if (t
->data
== NULL
) {
331 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
334 memcpy(t
->data
, data
, dlen
);
337 /* Validate and cache full certificate or public key */
338 if (mtype
== DANETLS_MATCHING_FULL
) {
339 const unsigned char *p
= data
;
341 EVP_PKEY
*pkey
= NULL
;
344 case DANETLS_SELECTOR_CERT
:
345 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
346 dlen
!= (size_t)(p
- data
)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
351 if (X509_get0_pubkey(cert
) == NULL
) {
353 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
357 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
363 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
364 * records that contain full certificates of trust-anchors that are
365 * not present in the wire chain. For usage PKIX-TA(0), we augment
366 * the chain with untrusted Full(0) certificates from DNS, in case
367 * they are missing from the chain.
369 if ((dane
->certs
== NULL
&&
370 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
371 !sk_X509_push(dane
->certs
, cert
)) {
372 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
379 case DANETLS_SELECTOR_SPKI
:
380 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
381 dlen
!= (size_t)(p
- data
)) {
383 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
388 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
389 * records that contain full bare keys of trust-anchors that are
390 * not present in the wire chain.
392 if (usage
== DANETLS_USAGE_DANE_TA
)
401 * Find the right insertion point for the new record.
403 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
404 * they can be processed first, as they require no chain building, and no
405 * expiration or hostname checks. Because DANE-EE(3) is numerically
406 * largest, this is accomplished via descending sort by "usage".
408 * We also sort in descending order by matching ordinal to simplify
409 * the implementation of digest agility in the verification code.
411 * The choice of order for the selector is not significant, so we
412 * use the same descending order for consistency.
414 num
= sk_danetls_record_num(dane
->trecs
);
415 for (i
= 0; i
< num
; ++i
) {
416 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
418 if (rec
->usage
> usage
)
420 if (rec
->usage
< usage
)
422 if (rec
->selector
> selector
)
424 if (rec
->selector
< selector
)
426 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
431 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
433 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
436 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
442 * Return 0 if there is only one version configured and it was disabled
443 * at configure time. Return 1 otherwise.
445 static int ssl_check_allowed_versions(int min_version
, int max_version
)
447 int minisdtls
= 0, maxisdtls
= 0;
449 /* Figure out if we're doing DTLS versions or TLS versions */
450 if (min_version
== DTLS1_BAD_VER
451 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
453 if (max_version
== DTLS1_BAD_VER
454 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
456 /* A wildcard version of 0 could be DTLS or TLS. */
457 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
458 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
459 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
463 if (minisdtls
|| maxisdtls
) {
464 /* Do DTLS version checks. */
465 if (min_version
== 0)
466 /* Ignore DTLS1_BAD_VER */
467 min_version
= DTLS1_VERSION
;
468 if (max_version
== 0)
469 max_version
= DTLS1_2_VERSION
;
470 #ifdef OPENSSL_NO_DTLS1_2
471 if (max_version
== DTLS1_2_VERSION
)
472 max_version
= DTLS1_VERSION
;
474 #ifdef OPENSSL_NO_DTLS1
475 if (min_version
== DTLS1_VERSION
)
476 min_version
= DTLS1_2_VERSION
;
478 /* Done massaging versions; do the check. */
480 #ifdef OPENSSL_NO_DTLS1
481 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
482 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
484 #ifdef OPENSSL_NO_DTLS1_2
485 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
486 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
491 /* Regular TLS version checks. */
492 if (min_version
== 0)
493 min_version
= SSL3_VERSION
;
494 if (max_version
== 0)
495 max_version
= TLS1_3_VERSION
;
496 #ifdef OPENSSL_NO_TLS1_3
497 if (max_version
== TLS1_3_VERSION
)
498 max_version
= TLS1_2_VERSION
;
500 #ifdef OPENSSL_NO_TLS1_2
501 if (max_version
== TLS1_2_VERSION
)
502 max_version
= TLS1_1_VERSION
;
504 #ifdef OPENSSL_NO_TLS1_1
505 if (max_version
== TLS1_1_VERSION
)
506 max_version
= TLS1_VERSION
;
508 #ifdef OPENSSL_NO_TLS1
509 if (max_version
== TLS1_VERSION
)
510 max_version
= SSL3_VERSION
;
512 #ifdef OPENSSL_NO_SSL3
513 if (min_version
== SSL3_VERSION
)
514 min_version
= TLS1_VERSION
;
516 #ifdef OPENSSL_NO_TLS1
517 if (min_version
== TLS1_VERSION
)
518 min_version
= TLS1_1_VERSION
;
520 #ifdef OPENSSL_NO_TLS1_1
521 if (min_version
== TLS1_1_VERSION
)
522 min_version
= TLS1_2_VERSION
;
524 #ifdef OPENSSL_NO_TLS1_2
525 if (min_version
== TLS1_2_VERSION
)
526 min_version
= TLS1_3_VERSION
;
528 /* Done massaging versions; do the check. */
530 #ifdef OPENSSL_NO_SSL3
531 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
533 #ifdef OPENSSL_NO_TLS1
534 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
536 #ifdef OPENSSL_NO_TLS1_1
537 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
539 #ifdef OPENSSL_NO_TLS1_2
540 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
542 #ifdef OPENSSL_NO_TLS1_3
543 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
551 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
553 * Define a VPROC function for HP NonStop build ssl library.
554 * This is used by platform version identification tools.
555 * Do not inline this procedure or make it static.
557 # define OPENSSL_VPROC_STRING_(x) x##_SSL
558 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
559 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
560 void OPENSSL_VPROC_FUNC(void) {}
564 static void clear_ciphers(SSL
*s
)
566 /* clear the current cipher */
567 ssl_clear_cipher_ctx(s
);
568 ssl_clear_hash_ctx(&s
->read_hash
);
569 ssl_clear_hash_ctx(&s
->write_hash
);
572 int SSL_clear(SSL
*s
)
574 if (s
->method
== NULL
) {
575 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
579 if (ssl_clear_bad_session(s
)) {
580 SSL_SESSION_free(s
->session
);
583 SSL_SESSION_free(s
->psksession
);
584 s
->psksession
= NULL
;
585 OPENSSL_free(s
->psksession_id
);
586 s
->psksession_id
= NULL
;
587 s
->psksession_id_len
= 0;
588 s
->hello_retry_request
= 0;
595 if (s
->renegotiate
) {
596 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
600 ossl_statem_clear(s
);
602 s
->version
= s
->method
->version
;
603 s
->client_version
= s
->version
;
604 s
->rwstate
= SSL_NOTHING
;
606 BUF_MEM_free(s
->init_buf
);
611 s
->key_update
= SSL_KEY_UPDATE_NONE
;
613 EVP_MD_CTX_free(s
->pha_dgst
);
616 /* Reset DANE verification result state */
619 X509_free(s
->dane
.mcert
);
620 s
->dane
.mcert
= NULL
;
621 s
->dane
.mtlsa
= NULL
;
623 /* Clear the verification result peername */
624 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
626 /* Clear any shared connection state */
627 OPENSSL_free(s
->shared_sigalgs
);
628 s
->shared_sigalgs
= NULL
;
629 s
->shared_sigalgslen
= 0;
632 * Check to see if we were changed into a different method, if so, revert
635 if (s
->method
!= s
->ctx
->method
) {
636 s
->method
->ssl_free(s
);
637 s
->method
= s
->ctx
->method
;
638 if (!s
->method
->ssl_new(s
))
641 if (!s
->method
->ssl_clear(s
))
645 RECORD_LAYER_clear(&s
->rlayer
);
650 #ifndef OPENSSL_NO_DEPRECATED_3_0
651 /** Used to change an SSL_CTXs default SSL method type */
652 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
654 STACK_OF(SSL_CIPHER
) *sk
;
658 if (!SSL_CTX_set_ciphersuites(ctx
, OSSL_default_ciphersuites())) {
659 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
662 sk
= ssl_create_cipher_list(ctx
->method
,
663 ctx
->tls13_ciphersuites
,
665 &(ctx
->cipher_list_by_id
),
666 OSSL_default_cipher_list(), ctx
->cert
);
667 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
668 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
675 SSL
*SSL_new(SSL_CTX
*ctx
)
680 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
683 if (ctx
->method
== NULL
) {
684 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
688 s
= OPENSSL_zalloc(sizeof(*s
));
693 s
->lock
= CRYPTO_THREAD_lock_new();
694 if (s
->lock
== NULL
) {
700 RECORD_LAYER_init(&s
->rlayer
, s
);
702 s
->options
= ctx
->options
;
703 s
->dane
.flags
= ctx
->dane
.flags
;
704 s
->min_proto_version
= ctx
->min_proto_version
;
705 s
->max_proto_version
= ctx
->max_proto_version
;
707 s
->max_cert_list
= ctx
->max_cert_list
;
708 s
->max_early_data
= ctx
->max_early_data
;
709 s
->recv_max_early_data
= ctx
->recv_max_early_data
;
710 s
->num_tickets
= ctx
->num_tickets
;
711 s
->pha_enabled
= ctx
->pha_enabled
;
713 /* Shallow copy of the ciphersuites stack */
714 s
->tls13_ciphersuites
= sk_SSL_CIPHER_dup(ctx
->tls13_ciphersuites
);
715 if (s
->tls13_ciphersuites
== NULL
)
719 * Earlier library versions used to copy the pointer to the CERT, not
720 * its contents; only when setting new parameters for the per-SSL
721 * copy, ssl_cert_new would be called (and the direct reference to
722 * the per-SSL_CTX settings would be lost, but those still were
723 * indirectly accessed for various purposes, and for that reason they
724 * used to be known as s->ctx->default_cert). Now we don't look at the
725 * SSL_CTX's CERT after having duplicated it once.
727 s
->cert
= ssl_cert_dup(ctx
->cert
);
731 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
732 s
->msg_callback
= ctx
->msg_callback
;
733 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
734 s
->verify_mode
= ctx
->verify_mode
;
735 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
736 s
->record_padding_cb
= ctx
->record_padding_cb
;
737 s
->record_padding_arg
= ctx
->record_padding_arg
;
738 s
->block_padding
= ctx
->block_padding
;
739 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
740 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
742 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
743 s
->verify_callback
= ctx
->default_verify_callback
;
744 s
->generate_session_id
= ctx
->generate_session_id
;
746 s
->param
= X509_VERIFY_PARAM_new();
747 if (s
->param
== NULL
)
749 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
750 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
752 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
753 s
->max_send_fragment
= ctx
->max_send_fragment
;
754 s
->split_send_fragment
= ctx
->split_send_fragment
;
755 s
->max_pipelines
= ctx
->max_pipelines
;
756 if (s
->max_pipelines
> 1)
757 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
758 if (ctx
->default_read_buf_len
> 0)
759 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
764 s
->ext
.debug_arg
= NULL
;
765 s
->ext
.ticket_expected
= 0;
766 s
->ext
.status_type
= ctx
->ext
.status_type
;
767 s
->ext
.status_expected
= 0;
768 s
->ext
.ocsp
.ids
= NULL
;
769 s
->ext
.ocsp
.exts
= NULL
;
770 s
->ext
.ocsp
.resp
= NULL
;
771 s
->ext
.ocsp
.resp_len
= 0;
773 s
->session_ctx
= ctx
;
774 #ifndef OPENSSL_NO_EC
775 if (ctx
->ext
.ecpointformats
) {
776 s
->ext
.ecpointformats
=
777 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
778 ctx
->ext
.ecpointformats_len
);
779 if (!s
->ext
.ecpointformats
)
781 s
->ext
.ecpointformats_len
=
782 ctx
->ext
.ecpointformats_len
;
785 if (ctx
->ext
.supportedgroups
) {
786 s
->ext
.supportedgroups
=
787 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
788 ctx
->ext
.supportedgroups_len
789 * sizeof(*ctx
->ext
.supportedgroups
));
790 if (!s
->ext
.supportedgroups
)
792 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
795 #ifndef OPENSSL_NO_NEXTPROTONEG
799 if (s
->ctx
->ext
.alpn
) {
800 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
801 if (s
->ext
.alpn
== NULL
)
803 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
804 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
807 s
->verified_chain
= NULL
;
808 s
->verify_result
= X509_V_OK
;
810 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
811 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
813 s
->method
= ctx
->method
;
815 s
->key_update
= SSL_KEY_UPDATE_NONE
;
817 s
->allow_early_data_cb
= ctx
->allow_early_data_cb
;
818 s
->allow_early_data_cb_data
= ctx
->allow_early_data_cb_data
;
820 if (!s
->method
->ssl_new(s
))
823 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
828 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
831 #ifndef OPENSSL_NO_PSK
832 s
->psk_client_callback
= ctx
->psk_client_callback
;
833 s
->psk_server_callback
= ctx
->psk_server_callback
;
835 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
836 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
838 s
->async_cb
= ctx
->async_cb
;
839 s
->async_cb_arg
= ctx
->async_cb_arg
;
843 #ifndef OPENSSL_NO_CT
844 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
845 ctx
->ct_validation_callback_arg
))
852 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
856 int SSL_is_dtls(const SSL
*s
)
858 return SSL_IS_DTLS(s
) ? 1 : 0;
861 int SSL_up_ref(SSL
*s
)
865 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
868 REF_PRINT_COUNT("SSL", s
);
869 REF_ASSERT_ISNT(i
< 2);
870 return ((i
> 1) ? 1 : 0);
873 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
874 unsigned int sid_ctx_len
)
876 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
877 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
878 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
881 ctx
->sid_ctx_length
= sid_ctx_len
;
882 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
887 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
888 unsigned int sid_ctx_len
)
890 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
891 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
892 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
895 ssl
->sid_ctx_length
= sid_ctx_len
;
896 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
901 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
903 CRYPTO_THREAD_write_lock(ctx
->lock
);
904 ctx
->generate_session_id
= cb
;
905 CRYPTO_THREAD_unlock(ctx
->lock
);
909 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
911 CRYPTO_THREAD_write_lock(ssl
->lock
);
912 ssl
->generate_session_id
= cb
;
913 CRYPTO_THREAD_unlock(ssl
->lock
);
917 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
921 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
922 * we can "construct" a session to give us the desired check - i.e. to
923 * find if there's a session in the hash table that would conflict with
924 * any new session built out of this id/id_len and the ssl_version in use
929 if (id_len
> sizeof(r
.session_id
))
932 r
.ssl_version
= ssl
->version
;
933 r
.session_id_length
= id_len
;
934 memcpy(r
.session_id
, id
, id_len
);
936 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
937 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
938 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
942 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
944 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
947 int SSL_set_purpose(SSL
*s
, int purpose
)
949 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
952 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
954 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
957 int SSL_set_trust(SSL
*s
, int trust
)
959 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
962 int SSL_set1_host(SSL
*s
, const char *hostname
)
964 /* If a hostname is provided and parses as an IP address,
965 * treat it as such. */
966 if (hostname
&& X509_VERIFY_PARAM_set1_ip_asc(s
->param
, hostname
) == 1)
969 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
972 int SSL_add1_host(SSL
*s
, const char *hostname
)
974 /* If a hostname is provided and parses as an IP address,
975 * treat it as such. */
978 ASN1_OCTET_STRING
*ip
;
981 ip
= a2i_IPADDRESS(hostname
);
983 /* We didn't want it; only to check if it *is* an IP address */
984 ASN1_OCTET_STRING_free(ip
);
986 old_ip
= X509_VERIFY_PARAM_get1_ip_asc(s
->param
);
989 OPENSSL_free(old_ip
);
990 /* There can be only one IP address */
994 return X509_VERIFY_PARAM_set1_ip_asc(s
->param
, hostname
);
998 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
1001 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
1003 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
1006 const char *SSL_get0_peername(SSL
*s
)
1008 return X509_VERIFY_PARAM_get0_peername(s
->param
);
1011 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
1013 return dane_ctx_enable(&ctx
->dane
);
1016 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
1018 unsigned long orig
= ctx
->dane
.flags
;
1020 ctx
->dane
.flags
|= flags
;
1024 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
1026 unsigned long orig
= ctx
->dane
.flags
;
1028 ctx
->dane
.flags
&= ~flags
;
1032 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
1034 SSL_DANE
*dane
= &s
->dane
;
1036 if (s
->ctx
->dane
.mdmax
== 0) {
1037 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
1040 if (dane
->trecs
!= NULL
) {
1041 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1046 * Default SNI name. This rejects empty names, while set1_host below
1047 * accepts them and disables host name checks. To avoid side-effects with
1048 * invalid input, set the SNI name first.
1050 if (s
->ext
.hostname
== NULL
) {
1051 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1052 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1057 /* Primary RFC6125 reference identifier */
1058 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1059 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1065 dane
->dctx
= &s
->ctx
->dane
;
1066 dane
->trecs
= sk_danetls_record_new_null();
1068 if (dane
->trecs
== NULL
) {
1069 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1075 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1077 unsigned long orig
= ssl
->dane
.flags
;
1079 ssl
->dane
.flags
|= flags
;
1083 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1085 unsigned long orig
= ssl
->dane
.flags
;
1087 ssl
->dane
.flags
&= ~flags
;
1091 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1093 SSL_DANE
*dane
= &s
->dane
;
1095 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1099 *mcert
= dane
->mcert
;
1101 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1106 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1107 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1109 SSL_DANE
*dane
= &s
->dane
;
1111 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1115 *usage
= dane
->mtlsa
->usage
;
1117 *selector
= dane
->mtlsa
->selector
;
1119 *mtype
= dane
->mtlsa
->mtype
;
1121 *data
= dane
->mtlsa
->data
;
1123 *dlen
= dane
->mtlsa
->dlen
;
1128 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1133 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1134 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1136 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1139 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1142 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1145 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1147 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1150 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1152 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1155 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1160 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1165 void SSL_certs_clear(SSL
*s
)
1167 ssl_cert_clear_certs(s
->cert
);
1170 void SSL_free(SSL
*s
)
1176 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1177 REF_PRINT_COUNT("SSL", s
);
1180 REF_ASSERT_ISNT(i
< 0);
1182 X509_VERIFY_PARAM_free(s
->param
);
1183 dane_final(&s
->dane
);
1184 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1186 RECORD_LAYER_release(&s
->rlayer
);
1188 /* Ignore return value */
1189 ssl_free_wbio_buffer(s
);
1191 BIO_free_all(s
->wbio
);
1193 BIO_free_all(s
->rbio
);
1196 BUF_MEM_free(s
->init_buf
);
1198 /* add extra stuff */
1199 sk_SSL_CIPHER_free(s
->cipher_list
);
1200 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1201 sk_SSL_CIPHER_free(s
->tls13_ciphersuites
);
1202 sk_SSL_CIPHER_free(s
->peer_ciphers
);
1204 /* Make the next call work :-) */
1205 if (s
->session
!= NULL
) {
1206 ssl_clear_bad_session(s
);
1207 SSL_SESSION_free(s
->session
);
1209 SSL_SESSION_free(s
->psksession
);
1210 OPENSSL_free(s
->psksession_id
);
1214 ssl_cert_free(s
->cert
);
1215 OPENSSL_free(s
->shared_sigalgs
);
1216 /* Free up if allocated */
1218 OPENSSL_free(s
->ext
.hostname
);
1219 SSL_CTX_free(s
->session_ctx
);
1220 #ifndef OPENSSL_NO_EC
1221 OPENSSL_free(s
->ext
.ecpointformats
);
1222 OPENSSL_free(s
->ext
.peer_ecpointformats
);
1223 #endif /* OPENSSL_NO_EC */
1224 OPENSSL_free(s
->ext
.supportedgroups
);
1225 OPENSSL_free(s
->ext
.peer_supportedgroups
);
1226 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1227 #ifndef OPENSSL_NO_OCSP
1228 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1230 #ifndef OPENSSL_NO_CT
1231 SCT_LIST_free(s
->scts
);
1232 OPENSSL_free(s
->ext
.scts
);
1234 OPENSSL_free(s
->ext
.ocsp
.resp
);
1235 OPENSSL_free(s
->ext
.alpn
);
1236 OPENSSL_free(s
->ext
.tls13_cookie
);
1237 if (s
->clienthello
!= NULL
)
1238 OPENSSL_free(s
->clienthello
->pre_proc_exts
);
1239 OPENSSL_free(s
->clienthello
);
1240 OPENSSL_free(s
->pha_context
);
1241 EVP_MD_CTX_free(s
->pha_dgst
);
1243 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1244 sk_X509_NAME_pop_free(s
->client_ca_names
, X509_NAME_free
);
1246 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1248 if (s
->method
!= NULL
)
1249 s
->method
->ssl_free(s
);
1251 SSL_CTX_free(s
->ctx
);
1253 ASYNC_WAIT_CTX_free(s
->waitctx
);
1255 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1256 OPENSSL_free(s
->ext
.npn
);
1259 #ifndef OPENSSL_NO_SRTP
1260 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1263 CRYPTO_THREAD_lock_free(s
->lock
);
1268 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1270 BIO_free_all(s
->rbio
);
1274 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1277 * If the output buffering BIO is still in place, remove it
1279 if (s
->bbio
!= NULL
)
1280 s
->wbio
= BIO_pop(s
->wbio
);
1282 BIO_free_all(s
->wbio
);
1285 /* Re-attach |bbio| to the new |wbio|. */
1286 if (s
->bbio
!= NULL
)
1287 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1290 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1293 * For historical reasons, this function has many different cases in
1294 * ownership handling.
1297 /* If nothing has changed, do nothing */
1298 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1302 * If the two arguments are equal then one fewer reference is granted by the
1303 * caller than we want to take
1305 if (rbio
!= NULL
&& rbio
== wbio
)
1309 * If only the wbio is changed only adopt one reference.
1311 if (rbio
== SSL_get_rbio(s
)) {
1312 SSL_set0_wbio(s
, wbio
);
1316 * There is an asymmetry here for historical reasons. If only the rbio is
1317 * changed AND the rbio and wbio were originally different, then we only
1318 * adopt one reference.
1320 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1321 SSL_set0_rbio(s
, rbio
);
1325 /* Otherwise, adopt both references. */
1326 SSL_set0_rbio(s
, rbio
);
1327 SSL_set0_wbio(s
, wbio
);
1330 BIO
*SSL_get_rbio(const SSL
*s
)
1335 BIO
*SSL_get_wbio(const SSL
*s
)
1337 if (s
->bbio
!= NULL
) {
1339 * If |bbio| is active, the true caller-configured BIO is its
1342 return BIO_next(s
->bbio
);
1347 int SSL_get_fd(const SSL
*s
)
1349 return SSL_get_rfd(s
);
1352 int SSL_get_rfd(const SSL
*s
)
1357 b
= SSL_get_rbio(s
);
1358 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1360 BIO_get_fd(r
, &ret
);
1364 int SSL_get_wfd(const SSL
*s
)
1369 b
= SSL_get_wbio(s
);
1370 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1372 BIO_get_fd(r
, &ret
);
1376 #ifndef OPENSSL_NO_SOCK
1377 int SSL_set_fd(SSL
*s
, int fd
)
1382 bio
= BIO_new(BIO_s_socket());
1385 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1388 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1389 SSL_set_bio(s
, bio
, bio
);
1390 #ifndef OPENSSL_NO_KTLS
1392 * The new socket is created successfully regardless of ktls_enable.
1393 * ktls_enable doesn't change any functionality of the socket, except
1394 * changing the setsockopt to enable the processing of ktls_start.
1395 * Thus, it is not a problem to call it for non-TLS sockets.
1398 #endif /* OPENSSL_NO_KTLS */
1404 int SSL_set_wfd(SSL
*s
, int fd
)
1406 BIO
*rbio
= SSL_get_rbio(s
);
1408 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1409 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1410 BIO
*bio
= BIO_new(BIO_s_socket());
1413 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1416 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1417 SSL_set0_wbio(s
, bio
);
1418 #ifndef OPENSSL_NO_KTLS
1420 * The new socket is created successfully regardless of ktls_enable.
1421 * ktls_enable doesn't change any functionality of the socket, except
1422 * changing the setsockopt to enable the processing of ktls_start.
1423 * Thus, it is not a problem to call it for non-TLS sockets.
1426 #endif /* OPENSSL_NO_KTLS */
1429 SSL_set0_wbio(s
, rbio
);
1434 int SSL_set_rfd(SSL
*s
, int fd
)
1436 BIO
*wbio
= SSL_get_wbio(s
);
1438 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1439 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1440 BIO
*bio
= BIO_new(BIO_s_socket());
1443 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1446 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1447 SSL_set0_rbio(s
, bio
);
1450 SSL_set0_rbio(s
, wbio
);
1457 /* return length of latest Finished message we sent, copy to 'buf' */
1458 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1462 ret
= s
->s3
.tmp
.finish_md_len
;
1465 memcpy(buf
, s
->s3
.tmp
.finish_md
, count
);
1469 /* return length of latest Finished message we expected, copy to 'buf' */
1470 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1474 ret
= s
->s3
.tmp
.peer_finish_md_len
;
1477 memcpy(buf
, s
->s3
.tmp
.peer_finish_md
, count
);
1481 int SSL_get_verify_mode(const SSL
*s
)
1483 return s
->verify_mode
;
1486 int SSL_get_verify_depth(const SSL
*s
)
1488 return X509_VERIFY_PARAM_get_depth(s
->param
);
1491 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1492 return s
->verify_callback
;
1495 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1497 return ctx
->verify_mode
;
1500 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1502 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1505 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1506 return ctx
->default_verify_callback
;
1509 void SSL_set_verify(SSL
*s
, int mode
,
1510 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1512 s
->verify_mode
= mode
;
1513 if (callback
!= NULL
)
1514 s
->verify_callback
= callback
;
1517 void SSL_set_verify_depth(SSL
*s
, int depth
)
1519 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1522 void SSL_set_read_ahead(SSL
*s
, int yes
)
1524 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1527 int SSL_get_read_ahead(const SSL
*s
)
1529 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1532 int SSL_pending(const SSL
*s
)
1534 size_t pending
= s
->method
->ssl_pending(s
);
1537 * SSL_pending cannot work properly if read-ahead is enabled
1538 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1539 * impossible to fix since SSL_pending cannot report errors that may be
1540 * observed while scanning the new data. (Note that SSL_pending() is
1541 * often used as a boolean value, so we'd better not return -1.)
1543 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1544 * we just return INT_MAX.
1546 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1549 int SSL_has_pending(const SSL
*s
)
1552 * Similar to SSL_pending() but returns a 1 to indicate that we have
1553 * unprocessed data available or 0 otherwise (as opposed to the number of
1554 * bytes available). Unlike SSL_pending() this will take into account
1555 * read_ahead data. A 1 return simply indicates that we have unprocessed
1556 * data. That data may not result in any application data, or we may fail
1557 * to parse the records for some reason.
1559 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1562 return RECORD_LAYER_read_pending(&s
->rlayer
);
1565 X509
*SSL_get1_peer_certificate(const SSL
*s
)
1567 X509
*r
= SSL_get0_peer_certificate(s
);
1575 X509
*SSL_get0_peer_certificate(const SSL
*s
)
1577 if ((s
== NULL
) || (s
->session
== NULL
))
1580 return s
->session
->peer
;
1583 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1587 if ((s
== NULL
) || (s
->session
== NULL
))
1590 r
= s
->session
->peer_chain
;
1593 * If we are a client, cert_chain includes the peer's own certificate; if
1594 * we are a server, it does not.
1601 * Now in theory, since the calling process own 't' it should be safe to
1602 * modify. We need to be able to read f without being hassled
1604 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1607 /* Do we need to to SSL locking? */
1608 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1613 * what if we are setup for one protocol version but want to talk another
1615 if (t
->method
!= f
->method
) {
1616 t
->method
->ssl_free(t
);
1617 t
->method
= f
->method
;
1618 if (t
->method
->ssl_new(t
) == 0)
1622 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1623 ssl_cert_free(t
->cert
);
1625 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1632 /* Fix this so it checks all the valid key/cert options */
1633 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1635 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1636 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1639 if (ctx
->cert
->key
->privatekey
== NULL
) {
1640 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1643 return X509_check_private_key
1644 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1647 /* Fix this function so that it takes an optional type parameter */
1648 int SSL_check_private_key(const SSL
*ssl
)
1651 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1654 if (ssl
->cert
->key
->x509
== NULL
) {
1655 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1658 if (ssl
->cert
->key
->privatekey
== NULL
) {
1659 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1662 return X509_check_private_key(ssl
->cert
->key
->x509
,
1663 ssl
->cert
->key
->privatekey
);
1666 int SSL_waiting_for_async(SSL
*s
)
1674 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1676 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1680 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1683 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1684 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1686 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1690 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1694 int SSL_CTX_set_async_callback(SSL_CTX
*ctx
, SSL_async_callback_fn callback
)
1696 ctx
->async_cb
= callback
;
1700 int SSL_CTX_set_async_callback_arg(SSL_CTX
*ctx
, void *arg
)
1702 ctx
->async_cb_arg
= arg
;
1706 int SSL_set_async_callback(SSL
*s
, SSL_async_callback_fn callback
)
1708 s
->async_cb
= callback
;
1712 int SSL_set_async_callback_arg(SSL
*s
, void *arg
)
1714 s
->async_cb_arg
= arg
;
1718 int SSL_get_async_status(SSL
*s
, int *status
)
1720 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1724 *status
= ASYNC_WAIT_CTX_get_status(ctx
);
1728 int SSL_accept(SSL
*s
)
1730 if (s
->handshake_func
== NULL
) {
1731 /* Not properly initialized yet */
1732 SSL_set_accept_state(s
);
1735 return SSL_do_handshake(s
);
1738 int SSL_connect(SSL
*s
)
1740 if (s
->handshake_func
== NULL
) {
1741 /* Not properly initialized yet */
1742 SSL_set_connect_state(s
);
1745 return SSL_do_handshake(s
);
1748 long SSL_get_default_timeout(const SSL
*s
)
1750 return s
->method
->get_timeout();
1753 static int ssl_async_wait_ctx_cb(void *arg
)
1755 SSL
*s
= (SSL
*)arg
;
1757 return s
->async_cb(s
, s
->async_cb_arg
);
1760 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1761 int (*func
) (void *))
1764 if (s
->waitctx
== NULL
) {
1765 s
->waitctx
= ASYNC_WAIT_CTX_new();
1766 if (s
->waitctx
== NULL
)
1768 if (s
->async_cb
!= NULL
1769 && !ASYNC_WAIT_CTX_set_callback
1770 (s
->waitctx
, ssl_async_wait_ctx_cb
, s
))
1773 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1774 sizeof(struct ssl_async_args
))) {
1776 s
->rwstate
= SSL_NOTHING
;
1777 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1780 s
->rwstate
= SSL_ASYNC_PAUSED
;
1783 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1789 s
->rwstate
= SSL_NOTHING
;
1790 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1791 /* Shouldn't happen */
1796 static int ssl_io_intern(void *vargs
)
1798 struct ssl_async_args
*args
;
1803 args
= (struct ssl_async_args
*)vargs
;
1807 switch (args
->type
) {
1809 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1811 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1813 return args
->f
.func_other(s
);
1818 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1820 if (s
->handshake_func
== NULL
) {
1821 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1825 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1826 s
->rwstate
= SSL_NOTHING
;
1830 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1831 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1832 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1836 * If we are a client and haven't received the ServerHello etc then we
1839 ossl_statem_check_finish_init(s
, 0);
1841 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1842 struct ssl_async_args args
;
1848 args
.type
= READFUNC
;
1849 args
.f
.func_read
= s
->method
->ssl_read
;
1851 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1852 *readbytes
= s
->asyncrw
;
1855 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1859 int SSL_read(SSL
*s
, void *buf
, int num
)
1865 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1869 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1872 * The cast is safe here because ret should be <= INT_MAX because num is
1876 ret
= (int)readbytes
;
1881 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1883 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1890 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1895 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1896 return SSL_READ_EARLY_DATA_ERROR
;
1899 switch (s
->early_data_state
) {
1900 case SSL_EARLY_DATA_NONE
:
1901 if (!SSL_in_before(s
)) {
1902 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1903 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1904 return SSL_READ_EARLY_DATA_ERROR
;
1908 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1909 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1910 ret
= SSL_accept(s
);
1913 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1914 return SSL_READ_EARLY_DATA_ERROR
;
1918 case SSL_EARLY_DATA_READ_RETRY
:
1919 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1920 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1921 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1923 * State machine will update early_data_state to
1924 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1927 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1928 != SSL_EARLY_DATA_FINISHED_READING
)) {
1929 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1930 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1931 : SSL_READ_EARLY_DATA_ERROR
;
1934 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1937 return SSL_READ_EARLY_DATA_FINISH
;
1940 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1941 return SSL_READ_EARLY_DATA_ERROR
;
1945 int SSL_get_early_data_status(const SSL
*s
)
1947 return s
->ext
.early_data
;
1950 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1952 if (s
->handshake_func
== NULL
) {
1953 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1957 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1960 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1961 struct ssl_async_args args
;
1967 args
.type
= READFUNC
;
1968 args
.f
.func_read
= s
->method
->ssl_peek
;
1970 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1971 *readbytes
= s
->asyncrw
;
1974 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1978 int SSL_peek(SSL
*s
, void *buf
, int num
)
1984 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1988 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1991 * The cast is safe here because ret should be <= INT_MAX because num is
1995 ret
= (int)readbytes
;
2001 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
2003 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
2010 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2012 if (s
->handshake_func
== NULL
) {
2013 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
2017 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2018 s
->rwstate
= SSL_NOTHING
;
2019 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2023 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
2024 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
2025 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
2026 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2029 /* If we are a client and haven't sent the Finished we better do that */
2030 ossl_statem_check_finish_init(s
, 1);
2032 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2034 struct ssl_async_args args
;
2037 args
.buf
= (void *)buf
;
2039 args
.type
= WRITEFUNC
;
2040 args
.f
.func_write
= s
->method
->ssl_write
;
2042 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
2043 *written
= s
->asyncrw
;
2046 return s
->method
->ssl_write(s
, buf
, num
, written
);
2050 ossl_ssize_t
SSL_sendfile(SSL
*s
, int fd
, off_t offset
, size_t size
, int flags
)
2054 if (s
->handshake_func
== NULL
) {
2055 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2059 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2060 s
->rwstate
= SSL_NOTHING
;
2061 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2065 if (!BIO_get_ktls_send(s
->wbio
)) {
2066 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2070 /* If we have an alert to send, lets send it */
2071 if (s
->s3
.alert_dispatch
) {
2072 ret
= (ossl_ssize_t
)s
->method
->ssl_dispatch_alert(s
);
2074 /* SSLfatal() already called if appropriate */
2077 /* if it went, fall through and send more stuff */
2080 s
->rwstate
= SSL_WRITING
;
2081 if (BIO_flush(s
->wbio
) <= 0) {
2082 if (!BIO_should_retry(s
->wbio
)) {
2083 s
->rwstate
= SSL_NOTHING
;
2086 set_sys_error(EAGAIN
);
2092 #ifdef OPENSSL_NO_KTLS
2093 ERR_raise_data(ERR_LIB_SSL
, ERR_R_INTERNAL_ERROR
,
2094 "can't call ktls_sendfile(), ktls disabled");
2097 ret
= ktls_sendfile(SSL_get_wfd(s
), fd
, offset
, size
, flags
);
2099 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2100 if ((get_last_sys_error() == EAGAIN
) ||
2101 (get_last_sys_error() == EINTR
) ||
2102 (get_last_sys_error() == EBUSY
))
2103 BIO_set_retry_write(s
->wbio
);
2106 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2109 s
->rwstate
= SSL_NOTHING
;
2114 int SSL_write(SSL
*s
, const void *buf
, int num
)
2120 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
2124 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
2127 * The cast is safe here because ret should be <= INT_MAX because num is
2136 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2138 int ret
= ssl_write_internal(s
, buf
, num
, written
);
2145 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2147 int ret
, early_data_state
;
2149 uint32_t partialwrite
;
2151 switch (s
->early_data_state
) {
2152 case SSL_EARLY_DATA_NONE
:
2154 || !SSL_in_before(s
)
2155 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
2156 && (s
->psk_use_session_cb
== NULL
))) {
2157 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
2158 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2163 case SSL_EARLY_DATA_CONNECT_RETRY
:
2164 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
2165 ret
= SSL_connect(s
);
2168 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
2173 case SSL_EARLY_DATA_WRITE_RETRY
:
2174 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2176 * We disable partial write for early data because we don't keep track
2177 * of how many bytes we've written between the SSL_write_ex() call and
2178 * the flush if the flush needs to be retried)
2180 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2181 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2182 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2183 s
->mode
|= partialwrite
;
2185 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2188 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2191 case SSL_EARLY_DATA_WRITE_FLUSH
:
2192 /* The buffering BIO is still in place so we need to flush it */
2193 if (statem_flush(s
) != 1)
2196 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2199 case SSL_EARLY_DATA_FINISHED_READING
:
2200 case SSL_EARLY_DATA_READ_RETRY
:
2201 early_data_state
= s
->early_data_state
;
2202 /* We are a server writing to an unauthenticated client */
2203 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2204 ret
= SSL_write_ex(s
, buf
, num
, written
);
2205 /* The buffering BIO is still in place */
2207 (void)BIO_flush(s
->wbio
);
2208 s
->early_data_state
= early_data_state
;
2212 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2217 int SSL_shutdown(SSL
*s
)
2220 * Note that this function behaves differently from what one might
2221 * expect. Return values are 0 for no success (yet), 1 for success; but
2222 * calling it once is usually not enough, even if blocking I/O is used
2223 * (see ssl3_shutdown).
2226 if (s
->handshake_func
== NULL
) {
2227 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2231 if (!SSL_in_init(s
)) {
2232 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2233 struct ssl_async_args args
;
2236 args
.type
= OTHERFUNC
;
2237 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2239 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2241 return s
->method
->ssl_shutdown(s
);
2244 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2249 int SSL_key_update(SSL
*s
, int updatetype
)
2252 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2253 * negotiated, and that it is appropriate to call SSL_key_update() instead
2254 * of SSL_renegotiate().
2256 if (!SSL_IS_TLS13(s
)) {
2257 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2261 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2262 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2263 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2267 if (!SSL_is_init_finished(s
)) {
2268 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2272 ossl_statem_set_in_init(s
, 1);
2273 s
->key_update
= updatetype
;
2277 int SSL_get_key_update_type(const SSL
*s
)
2279 return s
->key_update
;
2282 int SSL_renegotiate(SSL
*s
)
2284 if (SSL_IS_TLS13(s
)) {
2285 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2289 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2290 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2297 return s
->method
->ssl_renegotiate(s
);
2300 int SSL_renegotiate_abbreviated(SSL
*s
)
2302 if (SSL_IS_TLS13(s
)) {
2303 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2307 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2308 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2315 return s
->method
->ssl_renegotiate(s
);
2318 int SSL_renegotiate_pending(const SSL
*s
)
2321 * becomes true when negotiation is requested; false again once a
2322 * handshake has finished
2324 return (s
->renegotiate
!= 0);
2327 int SSL_new_session_ticket(SSL
*s
)
2329 if (SSL_in_init(s
) || SSL_IS_FIRST_HANDSHAKE(s
) || !s
->server
2330 || !SSL_IS_TLS13(s
))
2332 s
->ext
.extra_tickets_expected
++;
2336 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2341 case SSL_CTRL_GET_READ_AHEAD
:
2342 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2343 case SSL_CTRL_SET_READ_AHEAD
:
2344 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2345 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2348 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2349 s
->msg_callback_arg
= parg
;
2353 return (s
->mode
|= larg
);
2354 case SSL_CTRL_CLEAR_MODE
:
2355 return (s
->mode
&= ~larg
);
2356 case SSL_CTRL_GET_MAX_CERT_LIST
:
2357 return (long)s
->max_cert_list
;
2358 case SSL_CTRL_SET_MAX_CERT_LIST
:
2361 l
= (long)s
->max_cert_list
;
2362 s
->max_cert_list
= (size_t)larg
;
2364 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2365 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2367 #ifndef OPENSSL_NO_KTLS
2368 if (s
->wbio
!= NULL
&& BIO_get_ktls_send(s
->wbio
))
2370 #endif /* OPENSSL_NO_KTLS */
2371 s
->max_send_fragment
= larg
;
2372 if (s
->max_send_fragment
< s
->split_send_fragment
)
2373 s
->split_send_fragment
= s
->max_send_fragment
;
2375 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2376 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2378 s
->split_send_fragment
= larg
;
2380 case SSL_CTRL_SET_MAX_PIPELINES
:
2381 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2383 s
->max_pipelines
= larg
;
2385 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2387 case SSL_CTRL_GET_RI_SUPPORT
:
2388 return s
->s3
.send_connection_binding
;
2389 case SSL_CTRL_CERT_FLAGS
:
2390 return (s
->cert
->cert_flags
|= larg
);
2391 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2392 return (s
->cert
->cert_flags
&= ~larg
);
2394 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2396 if (s
->s3
.tmp
.ciphers_raw
== NULL
)
2398 *(unsigned char **)parg
= s
->s3
.tmp
.ciphers_raw
;
2399 return (int)s
->s3
.tmp
.ciphers_rawlen
;
2401 return TLS_CIPHER_LEN
;
2403 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2404 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2406 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2410 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2411 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2412 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2413 &s
->min_proto_version
);
2414 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2415 return s
->min_proto_version
;
2416 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2417 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2418 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2419 &s
->max_proto_version
);
2420 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2421 return s
->max_proto_version
;
2423 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2427 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2430 case SSL_CTRL_SET_MSG_CALLBACK
:
2431 s
->msg_callback
= (void (*)
2432 (int write_p
, int version
, int content_type
,
2433 const void *buf
, size_t len
, SSL
*ssl
,
2438 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2442 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2444 return ctx
->sessions
;
2447 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2450 /* For some cases with ctx == NULL perform syntax checks */
2453 case SSL_CTRL_SET_GROUPS_LIST
:
2454 return tls1_set_groups_list(ctx
, NULL
, NULL
, parg
);
2455 case SSL_CTRL_SET_SIGALGS_LIST
:
2456 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2457 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2464 case SSL_CTRL_GET_READ_AHEAD
:
2465 return ctx
->read_ahead
;
2466 case SSL_CTRL_SET_READ_AHEAD
:
2467 l
= ctx
->read_ahead
;
2468 ctx
->read_ahead
= larg
;
2471 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2472 ctx
->msg_callback_arg
= parg
;
2475 case SSL_CTRL_GET_MAX_CERT_LIST
:
2476 return (long)ctx
->max_cert_list
;
2477 case SSL_CTRL_SET_MAX_CERT_LIST
:
2480 l
= (long)ctx
->max_cert_list
;
2481 ctx
->max_cert_list
= (size_t)larg
;
2484 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2487 l
= (long)ctx
->session_cache_size
;
2488 ctx
->session_cache_size
= (size_t)larg
;
2490 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2491 return (long)ctx
->session_cache_size
;
2492 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2493 l
= ctx
->session_cache_mode
;
2494 ctx
->session_cache_mode
= larg
;
2496 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2497 return ctx
->session_cache_mode
;
2499 case SSL_CTRL_SESS_NUMBER
:
2500 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2501 case SSL_CTRL_SESS_CONNECT
:
2502 return tsan_load(&ctx
->stats
.sess_connect
);
2503 case SSL_CTRL_SESS_CONNECT_GOOD
:
2504 return tsan_load(&ctx
->stats
.sess_connect_good
);
2505 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2506 return tsan_load(&ctx
->stats
.sess_connect_renegotiate
);
2507 case SSL_CTRL_SESS_ACCEPT
:
2508 return tsan_load(&ctx
->stats
.sess_accept
);
2509 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2510 return tsan_load(&ctx
->stats
.sess_accept_good
);
2511 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2512 return tsan_load(&ctx
->stats
.sess_accept_renegotiate
);
2513 case SSL_CTRL_SESS_HIT
:
2514 return tsan_load(&ctx
->stats
.sess_hit
);
2515 case SSL_CTRL_SESS_CB_HIT
:
2516 return tsan_load(&ctx
->stats
.sess_cb_hit
);
2517 case SSL_CTRL_SESS_MISSES
:
2518 return tsan_load(&ctx
->stats
.sess_miss
);
2519 case SSL_CTRL_SESS_TIMEOUTS
:
2520 return tsan_load(&ctx
->stats
.sess_timeout
);
2521 case SSL_CTRL_SESS_CACHE_FULL
:
2522 return tsan_load(&ctx
->stats
.sess_cache_full
);
2524 return (ctx
->mode
|= larg
);
2525 case SSL_CTRL_CLEAR_MODE
:
2526 return (ctx
->mode
&= ~larg
);
2527 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2528 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2530 ctx
->max_send_fragment
= larg
;
2531 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2532 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2534 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2535 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2537 ctx
->split_send_fragment
= larg
;
2539 case SSL_CTRL_SET_MAX_PIPELINES
:
2540 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2542 ctx
->max_pipelines
= larg
;
2544 case SSL_CTRL_CERT_FLAGS
:
2545 return (ctx
->cert
->cert_flags
|= larg
);
2546 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2547 return (ctx
->cert
->cert_flags
&= ~larg
);
2548 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2549 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2550 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2551 &ctx
->min_proto_version
);
2552 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2553 return ctx
->min_proto_version
;
2554 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2555 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2556 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2557 &ctx
->max_proto_version
);
2558 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2559 return ctx
->max_proto_version
;
2561 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2565 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2568 case SSL_CTRL_SET_MSG_CALLBACK
:
2569 ctx
->msg_callback
= (void (*)
2570 (int write_p
, int version
, int content_type
,
2571 const void *buf
, size_t len
, SSL
*ssl
,
2576 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2580 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2589 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2590 const SSL_CIPHER
*const *bp
)
2592 if ((*ap
)->id
> (*bp
)->id
)
2594 if ((*ap
)->id
< (*bp
)->id
)
2599 /** return a STACK of the ciphers available for the SSL and in order of
2601 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2604 if (s
->cipher_list
!= NULL
) {
2605 return s
->cipher_list
;
2606 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2607 return s
->ctx
->cipher_list
;
2613 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2615 if ((s
== NULL
) || !s
->server
)
2617 return s
->peer_ciphers
;
2620 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2622 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2625 ciphers
= SSL_get_ciphers(s
);
2628 if (!ssl_set_client_disabled(s
))
2630 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2631 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2632 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2634 sk
= sk_SSL_CIPHER_new_null();
2637 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2638 sk_SSL_CIPHER_free(sk
);
2646 /** return a STACK of the ciphers available for the SSL and in order of
2648 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2651 if (s
->cipher_list_by_id
!= NULL
) {
2652 return s
->cipher_list_by_id
;
2653 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2654 return s
->ctx
->cipher_list_by_id
;
2660 /** The old interface to get the same thing as SSL_get_ciphers() */
2661 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2663 const SSL_CIPHER
*c
;
2664 STACK_OF(SSL_CIPHER
) *sk
;
2668 sk
= SSL_get_ciphers(s
);
2669 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2671 c
= sk_SSL_CIPHER_value(sk
, n
);
2677 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2679 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2682 return ctx
->cipher_list
;
2687 * Distinguish between ciphers controlled by set_ciphersuite() and
2688 * set_cipher_list() when counting.
2690 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER
) *sk
)
2693 const SSL_CIPHER
*c
;
2697 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); ++i
) {
2698 c
= sk_SSL_CIPHER_value(sk
, i
);
2699 if (c
->min_tls
>= TLS1_3_VERSION
)
2706 /** specify the ciphers to be used by default by the SSL_CTX */
2707 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2709 STACK_OF(SSL_CIPHER
) *sk
;
2711 sk
= ssl_create_cipher_list(ctx
->method
, ctx
->tls13_ciphersuites
,
2712 &ctx
->cipher_list
, &ctx
->cipher_list_by_id
, str
,
2715 * ssl_create_cipher_list may return an empty stack if it was unable to
2716 * find a cipher matching the given rule string (for example if the rule
2717 * string specifies a cipher which has been disabled). This is not an
2718 * error as far as ssl_create_cipher_list is concerned, and hence
2719 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2723 else if (cipher_list_tls12_num(sk
) == 0) {
2724 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2730 /** specify the ciphers to be used by the SSL */
2731 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2733 STACK_OF(SSL_CIPHER
) *sk
;
2735 sk
= ssl_create_cipher_list(s
->ctx
->method
, s
->tls13_ciphersuites
,
2736 &s
->cipher_list
, &s
->cipher_list_by_id
, str
,
2738 /* see comment in SSL_CTX_set_cipher_list */
2741 else if (cipher_list_tls12_num(sk
) == 0) {
2742 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2748 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int size
)
2751 STACK_OF(SSL_CIPHER
) *clntsk
, *srvrsk
;
2752 const SSL_CIPHER
*c
;
2756 || s
->peer_ciphers
== NULL
2761 clntsk
= s
->peer_ciphers
;
2762 srvrsk
= SSL_get_ciphers(s
);
2763 if (clntsk
== NULL
|| srvrsk
== NULL
)
2766 if (sk_SSL_CIPHER_num(clntsk
) == 0 || sk_SSL_CIPHER_num(srvrsk
) == 0)
2769 for (i
= 0; i
< sk_SSL_CIPHER_num(clntsk
); i
++) {
2772 c
= sk_SSL_CIPHER_value(clntsk
, i
);
2773 if (sk_SSL_CIPHER_find(srvrsk
, c
) < 0)
2776 n
= strlen(c
->name
);
2793 * Return the requested servername (SNI) value. Note that the behaviour varies
2795 * - whether this is called by the client or the server,
2796 * - if we are before or during/after the handshake,
2797 * - if a resumption or normal handshake is being attempted/has occurred
2798 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2800 * Note that only the host_name type is defined (RFC 3546).
2802 const char *SSL_get_servername(const SSL
*s
, const int type
)
2805 * If we don't know if we are the client or the server yet then we assume
2808 int server
= s
->handshake_func
== NULL
? 0 : s
->server
;
2809 if (type
!= TLSEXT_NAMETYPE_host_name
)
2815 * In TLSv1.3 on the server SNI is not associated with the session
2816 * but in TLSv1.2 or below it is.
2818 * Before the handshake:
2821 * During/after the handshake (TLSv1.2 or below resumption occurred):
2822 * - If a servername was accepted by the server in the original
2823 * handshake then it will return that servername, or NULL otherwise.
2825 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2826 * - The function will return the servername requested by the client in
2827 * this handshake or NULL if none was requested.
2829 if (s
->hit
&& !SSL_IS_TLS13(s
))
2830 return s
->session
->ext
.hostname
;
2835 * Before the handshake:
2836 * - If a servername has been set via a call to
2837 * SSL_set_tlsext_host_name() then it will return that servername
2838 * - If one has not been set, but a TLSv1.2 resumption is being
2839 * attempted and the session from the original handshake had a
2840 * servername accepted by the server then it will return that
2842 * - Otherwise it returns NULL
2844 * During/after the handshake (TLSv1.2 or below resumption occurred):
2845 * - If the session from the orignal handshake had a servername accepted
2846 * by the server then it will return that servername.
2847 * - Otherwise it returns the servername set via
2848 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2850 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2851 * - It will return the servername set via SSL_set_tlsext_host_name()
2852 * (or NULL if it was not called).
2854 if (SSL_in_before(s
)) {
2855 if (s
->ext
.hostname
== NULL
2856 && s
->session
!= NULL
2857 && s
->session
->ssl_version
!= TLS1_3_VERSION
)
2858 return s
->session
->ext
.hostname
;
2860 if (!SSL_IS_TLS13(s
) && s
->hit
&& s
->session
->ext
.hostname
!= NULL
)
2861 return s
->session
->ext
.hostname
;
2865 return s
->ext
.hostname
;
2868 int SSL_get_servername_type(const SSL
*s
)
2870 if (SSL_get_servername(s
, TLSEXT_NAMETYPE_host_name
) != NULL
)
2871 return TLSEXT_NAMETYPE_host_name
;
2876 * SSL_select_next_proto implements the standard protocol selection. It is
2877 * expected that this function is called from the callback set by
2878 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2879 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2880 * not included in the length. A byte string of length 0 is invalid. No byte
2881 * string may be truncated. The current, but experimental algorithm for
2882 * selecting the protocol is: 1) If the server doesn't support NPN then this
2883 * is indicated to the callback. In this case, the client application has to
2884 * abort the connection or have a default application level protocol. 2) If
2885 * the server supports NPN, but advertises an empty list then the client
2886 * selects the first protocol in its list, but indicates via the API that this
2887 * fallback case was enacted. 3) Otherwise, the client finds the first
2888 * protocol in the server's list that it supports and selects this protocol.
2889 * This is because it's assumed that the server has better information about
2890 * which protocol a client should use. 4) If the client doesn't support any
2891 * of the server's advertised protocols, then this is treated the same as
2892 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2893 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2895 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2896 const unsigned char *server
,
2897 unsigned int server_len
,
2898 const unsigned char *client
, unsigned int client_len
)
2901 const unsigned char *result
;
2902 int status
= OPENSSL_NPN_UNSUPPORTED
;
2905 * For each protocol in server preference order, see if we support it.
2907 for (i
= 0; i
< server_len
;) {
2908 for (j
= 0; j
< client_len
;) {
2909 if (server
[i
] == client
[j
] &&
2910 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2911 /* We found a match */
2912 result
= &server
[i
];
2913 status
= OPENSSL_NPN_NEGOTIATED
;
2923 /* There's no overlap between our protocols and the server's list. */
2925 status
= OPENSSL_NPN_NO_OVERLAP
;
2928 *out
= (unsigned char *)result
+ 1;
2929 *outlen
= result
[0];
2933 #ifndef OPENSSL_NO_NEXTPROTONEG
2935 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2936 * client's requested protocol for this connection and returns 0. If the
2937 * client didn't request any protocol, then *data is set to NULL. Note that
2938 * the client can request any protocol it chooses. The value returned from
2939 * this function need not be a member of the list of supported protocols
2940 * provided by the callback.
2942 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2946 if (*data
== NULL
) {
2949 *len
= (unsigned int)s
->ext
.npn_len
;
2954 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2955 * a TLS server needs a list of supported protocols for Next Protocol
2956 * Negotiation. The returned list must be in wire format. The list is
2957 * returned by setting |out| to point to it and |outlen| to its length. This
2958 * memory will not be modified, but one should assume that the SSL* keeps a
2959 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2960 * wishes to advertise. Otherwise, no such extension will be included in the
2963 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2964 SSL_CTX_npn_advertised_cb_func cb
,
2967 ctx
->ext
.npn_advertised_cb
= cb
;
2968 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2972 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2973 * client needs to select a protocol from the server's provided list. |out|
2974 * must be set to point to the selected protocol (which may be within |in|).
2975 * The length of the protocol name must be written into |outlen|. The
2976 * server's advertised protocols are provided in |in| and |inlen|. The
2977 * callback can assume that |in| is syntactically valid. The client must
2978 * select a protocol. It is fatal to the connection if this callback returns
2979 * a value other than SSL_TLSEXT_ERR_OK.
2981 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2982 SSL_CTX_npn_select_cb_func cb
,
2985 ctx
->ext
.npn_select_cb
= cb
;
2986 ctx
->ext
.npn_select_cb_arg
= arg
;
2991 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2992 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2993 * length-prefixed strings). Returns 0 on success.
2995 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2996 unsigned int protos_len
)
2998 OPENSSL_free(ctx
->ext
.alpn
);
2999 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
3000 if (ctx
->ext
.alpn
== NULL
) {
3001 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
3004 ctx
->ext
.alpn_len
= protos_len
;
3010 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3011 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3012 * length-prefixed strings). Returns 0 on success.
3014 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
3015 unsigned int protos_len
)
3017 OPENSSL_free(ssl
->ext
.alpn
);
3018 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
3019 if (ssl
->ext
.alpn
== NULL
) {
3020 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
3023 ssl
->ext
.alpn_len
= protos_len
;
3029 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3030 * called during ClientHello processing in order to select an ALPN protocol
3031 * from the client's list of offered protocols.
3033 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
3034 SSL_CTX_alpn_select_cb_func cb
,
3037 ctx
->ext
.alpn_select_cb
= cb
;
3038 ctx
->ext
.alpn_select_cb_arg
= arg
;
3042 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3043 * On return it sets |*data| to point to |*len| bytes of protocol name
3044 * (not including the leading length-prefix byte). If the server didn't
3045 * respond with a negotiated protocol then |*len| will be zero.
3047 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
3050 *data
= ssl
->s3
.alpn_selected
;
3054 *len
= (unsigned int)ssl
->s3
.alpn_selected_len
;
3057 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
3058 const char *label
, size_t llen
,
3059 const unsigned char *context
, size_t contextlen
,
3062 if (s
->session
== NULL
3063 || (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
))
3066 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
3068 contextlen
, use_context
);
3071 int SSL_export_keying_material_early(SSL
*s
, unsigned char *out
, size_t olen
,
3072 const char *label
, size_t llen
,
3073 const unsigned char *context
,
3076 if (s
->version
!= TLS1_3_VERSION
)
3079 return tls13_export_keying_material_early(s
, out
, olen
, label
, llen
,
3080 context
, contextlen
);
3083 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
3085 const unsigned char *session_id
= a
->session_id
;
3087 unsigned char tmp_storage
[4];
3089 if (a
->session_id_length
< sizeof(tmp_storage
)) {
3090 memset(tmp_storage
, 0, sizeof(tmp_storage
));
3091 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
3092 session_id
= tmp_storage
;
3096 ((unsigned long)session_id
[0]) |
3097 ((unsigned long)session_id
[1] << 8L) |
3098 ((unsigned long)session_id
[2] << 16L) |
3099 ((unsigned long)session_id
[3] << 24L);
3104 * NB: If this function (or indeed the hash function which uses a sort of
3105 * coarser function than this one) is changed, ensure
3106 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3107 * being able to construct an SSL_SESSION that will collide with any existing
3108 * session with a matching session ID.
3110 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
3112 if (a
->ssl_version
!= b
->ssl_version
)
3114 if (a
->session_id_length
!= b
->session_id_length
)
3116 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
3120 * These wrapper functions should remain rather than redeclaring
3121 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3122 * variable. The reason is that the functions aren't static, they're exposed
3126 SSL_CTX
*SSL_CTX_new_ex(OPENSSL_CTX
*libctx
, const char *propq
,
3127 const SSL_METHOD
*meth
)
3129 SSL_CTX
*ret
= NULL
;
3132 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED
);
3136 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
3139 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3140 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
3143 ret
= OPENSSL_zalloc(sizeof(*ret
));
3147 ret
->libctx
= libctx
;
3148 if (propq
!= NULL
) {
3149 ret
->propq
= OPENSSL_strdup(propq
);
3150 if (ret
->propq
== NULL
)
3155 ret
->min_proto_version
= 0;
3156 ret
->max_proto_version
= 0;
3157 ret
->mode
= SSL_MODE_AUTO_RETRY
;
3158 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
3159 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
3160 /* We take the system default. */
3161 ret
->session_timeout
= meth
->get_timeout();
3162 ret
->references
= 1;
3163 ret
->lock
= CRYPTO_THREAD_lock_new();
3164 if (ret
->lock
== NULL
) {
3165 SSLerr(0, ERR_R_MALLOC_FAILURE
);
3169 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
3170 ret
->verify_mode
= SSL_VERIFY_NONE
;
3171 if ((ret
->cert
= ssl_cert_new()) == NULL
)
3174 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
3175 if (ret
->sessions
== NULL
)
3177 ret
->cert_store
= X509_STORE_new();
3178 if (ret
->cert_store
== NULL
)
3180 #ifndef OPENSSL_NO_CT
3181 ret
->ctlog_store
= CTLOG_STORE_new_ex(libctx
, propq
);
3182 if (ret
->ctlog_store
== NULL
)
3186 /* initialize cipher/digest methods table */
3187 if (!ssl_load_ciphers(ret
))
3189 /* initialise sig algs */
3190 if (!ssl_setup_sig_algs(ret
))
3194 if (!ssl_load_groups(ret
))
3197 if (!SSL_CTX_set_ciphersuites(ret
, OSSL_default_ciphersuites()))
3200 if (!ssl_create_cipher_list(ret
->method
,
3201 ret
->tls13_ciphersuites
,
3202 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
3203 OSSL_default_cipher_list(), ret
->cert
)
3204 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
3205 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
3209 ret
->param
= X509_VERIFY_PARAM_new();
3210 if (ret
->param
== NULL
)
3214 * If these aren't available from the provider we'll get NULL returns.
3215 * That's fine but will cause errors later if SSLv3 is negotiated
3217 ret
->md5
= ssl_evp_md_fetch(libctx
, NID_md5
, propq
);
3218 ret
->sha1
= ssl_evp_md_fetch(libctx
, NID_sha1
, propq
);
3220 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
3223 if ((ret
->client_ca_names
= sk_X509_NAME_new_null()) == NULL
)
3226 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
3229 if ((ret
->ext
.secure
= OPENSSL_secure_zalloc(sizeof(*ret
->ext
.secure
))) == NULL
)
3232 /* No compression for DTLS */
3233 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
3234 ret
->comp_methods
= SSL_COMP_get_compression_methods();
3236 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3237 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3239 /* Setup RFC5077 ticket keys */
3240 if ((RAND_bytes_ex(libctx
, ret
->ext
.tick_key_name
,
3241 sizeof(ret
->ext
.tick_key_name
)) <= 0)
3242 || (RAND_priv_bytes_ex(libctx
, ret
->ext
.secure
->tick_hmac_key
,
3243 sizeof(ret
->ext
.secure
->tick_hmac_key
)) <= 0)
3244 || (RAND_priv_bytes_ex(libctx
, ret
->ext
.secure
->tick_aes_key
,
3245 sizeof(ret
->ext
.secure
->tick_aes_key
)) <= 0))
3246 ret
->options
|= SSL_OP_NO_TICKET
;
3248 if (RAND_priv_bytes_ex(libctx
, ret
->ext
.cookie_hmac_key
,
3249 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
3252 #ifndef OPENSSL_NO_SRP
3253 if (!SSL_CTX_SRP_CTX_init(ret
))
3256 #ifndef OPENSSL_NO_ENGINE
3257 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3258 # define eng_strx(x) #x
3259 # define eng_str(x) eng_strx(x)
3260 /* Use specific client engine automatically... ignore errors */
3263 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3266 ENGINE_load_builtin_engines();
3267 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3269 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
3275 * Default is to connect to non-RI servers. When RI is more widely
3276 * deployed might change this.
3278 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
3280 * Disable compression by default to prevent CRIME. Applications can
3281 * re-enable compression by configuring
3282 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3283 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3284 * middlebox compatibility by default. This may be disabled by default in
3285 * a later OpenSSL version.
3287 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
3289 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
3292 * We cannot usefully set a default max_early_data here (which gets
3293 * propagated in SSL_new(), for the following reason: setting the
3294 * SSL field causes tls_construct_stoc_early_data() to tell the
3295 * client that early data will be accepted when constructing a TLS 1.3
3296 * session ticket, and the client will accordingly send us early data
3297 * when using that ticket (if the client has early data to send).
3298 * However, in order for the early data to actually be consumed by
3299 * the application, the application must also have calls to
3300 * SSL_read_early_data(); otherwise we'll just skip past the early data
3301 * and ignore it. So, since the application must add calls to
3302 * SSL_read_early_data(), we also require them to add
3303 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3304 * eliminating the bandwidth-wasting early data in the case described
3307 ret
->max_early_data
= 0;
3310 * Default recv_max_early_data is a fully loaded single record. Could be
3311 * split across multiple records in practice. We set this differently to
3312 * max_early_data so that, in the default case, we do not advertise any
3313 * support for early_data, but if a client were to send us some (e.g.
3314 * because of an old, stale ticket) then we will tolerate it and skip over
3317 ret
->recv_max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
3319 /* By default we send two session tickets automatically in TLSv1.3 */
3320 ret
->num_tickets
= 2;
3322 ssl_ctx_system_config(ret
);
3326 SSLerr(0, ERR_R_MALLOC_FAILURE
);
3332 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
3334 return SSL_CTX_new_ex(NULL
, NULL
, meth
);
3337 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3341 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3344 REF_PRINT_COUNT("SSL_CTX", ctx
);
3345 REF_ASSERT_ISNT(i
< 2);
3346 return ((i
> 1) ? 1 : 0);
3349 void SSL_CTX_free(SSL_CTX
*a
)
3357 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3358 REF_PRINT_COUNT("SSL_CTX", a
);
3361 REF_ASSERT_ISNT(i
< 0);
3363 X509_VERIFY_PARAM_free(a
->param
);
3364 dane_ctx_final(&a
->dane
);
3367 * Free internal session cache. However: the remove_cb() may reference
3368 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3369 * after the sessions were flushed.
3370 * As the ex_data handling routines might also touch the session cache,
3371 * the most secure solution seems to be: empty (flush) the cache, then
3372 * free ex_data, then finally free the cache.
3373 * (See ticket [openssl.org #212].)
3375 if (a
->sessions
!= NULL
)
3376 SSL_CTX_flush_sessions(a
, 0);
3378 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3379 lh_SSL_SESSION_free(a
->sessions
);
3380 X509_STORE_free(a
->cert_store
);
3381 #ifndef OPENSSL_NO_CT
3382 CTLOG_STORE_free(a
->ctlog_store
);
3384 sk_SSL_CIPHER_free(a
->cipher_list
);
3385 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3386 sk_SSL_CIPHER_free(a
->tls13_ciphersuites
);
3387 ssl_cert_free(a
->cert
);
3388 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3389 sk_X509_NAME_pop_free(a
->client_ca_names
, X509_NAME_free
);
3390 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3391 a
->comp_methods
= NULL
;
3392 #ifndef OPENSSL_NO_SRTP
3393 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3395 #ifndef OPENSSL_NO_SRP
3396 SSL_CTX_SRP_CTX_free(a
);
3398 #ifndef OPENSSL_NO_ENGINE
3399 ENGINE_finish(a
->client_cert_engine
);
3402 #ifndef OPENSSL_NO_EC
3403 OPENSSL_free(a
->ext
.ecpointformats
);
3405 OPENSSL_free(a
->ext
.supportedgroups
);
3406 OPENSSL_free(a
->ext
.alpn
);
3407 OPENSSL_secure_free(a
->ext
.secure
);
3409 ssl_evp_md_free(a
->md5
);
3410 ssl_evp_md_free(a
->sha1
);
3412 for (j
= 0; j
< SSL_ENC_NUM_IDX
; j
++)
3413 ssl_evp_cipher_free(a
->ssl_cipher_methods
[j
]);
3414 for (j
= 0; j
< SSL_MD_NUM_IDX
; j
++)
3415 ssl_evp_md_free(a
->ssl_digest_methods
[j
]);
3416 for (j
= 0; j
< a
->group_list_len
; j
++) {
3417 OPENSSL_free(a
->group_list
[j
].tlsname
);
3418 OPENSSL_free(a
->group_list
[j
].realname
);
3419 OPENSSL_free(a
->group_list
[j
].algorithm
);
3421 OPENSSL_free(a
->group_list
);
3423 OPENSSL_free(a
->sigalg_lookup_cache
);
3425 CRYPTO_THREAD_lock_free(a
->lock
);
3427 OPENSSL_free(a
->propq
);
3432 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3434 ctx
->default_passwd_callback
= cb
;
3437 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3439 ctx
->default_passwd_callback_userdata
= u
;
3442 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3444 return ctx
->default_passwd_callback
;
3447 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3449 return ctx
->default_passwd_callback_userdata
;
3452 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3454 s
->default_passwd_callback
= cb
;
3457 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3459 s
->default_passwd_callback_userdata
= u
;
3462 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3464 return s
->default_passwd_callback
;
3467 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3469 return s
->default_passwd_callback_userdata
;
3472 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3473 int (*cb
) (X509_STORE_CTX
*, void *),
3476 ctx
->app_verify_callback
= cb
;
3477 ctx
->app_verify_arg
= arg
;
3480 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3481 int (*cb
) (int, X509_STORE_CTX
*))
3483 ctx
->verify_mode
= mode
;
3484 ctx
->default_verify_callback
= cb
;
3487 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3489 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3492 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3494 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3497 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3499 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3502 void ssl_set_masks(SSL
*s
)
3505 uint32_t *pvalid
= s
->s3
.tmp
.valid_flags
;
3506 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3507 unsigned long mask_k
, mask_a
;
3508 #ifndef OPENSSL_NO_EC
3509 int have_ecc_cert
, ecdsa_ok
;
3514 #ifndef OPENSSL_NO_DH
3515 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3520 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3521 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3522 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3523 #ifndef OPENSSL_NO_EC
3524 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3529 OSSL_TRACE4(TLS_CIPHER
, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3530 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3532 #ifndef OPENSSL_NO_GOST
3533 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3534 mask_k
|= SSL_kGOST
| SSL_kGOST18
;
3535 mask_a
|= SSL_aGOST12
;
3537 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3538 mask_k
|= SSL_kGOST
| SSL_kGOST18
;
3539 mask_a
|= SSL_aGOST12
;
3541 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3542 mask_k
|= SSL_kGOST
;
3543 mask_a
|= SSL_aGOST01
;
3554 * If we only have an RSA-PSS certificate allow RSA authentication
3555 * if TLS 1.2 and peer supports it.
3558 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3559 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3560 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3567 mask_a
|= SSL_aNULL
;
3570 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3571 * depending on the key usage extension.
3573 #ifndef OPENSSL_NO_EC
3574 if (have_ecc_cert
) {
3576 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3577 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3578 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3581 mask_a
|= SSL_aECDSA
;
3583 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3584 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3585 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3586 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3587 mask_a
|= SSL_aECDSA
;
3589 /* Allow Ed448 for TLS 1.2 if peer supports it */
3590 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED448
)
3591 && pvalid
[SSL_PKEY_ED448
] & CERT_PKEY_EXPLICIT_SIGN
3592 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3593 mask_a
|= SSL_aECDSA
;
3596 #ifndef OPENSSL_NO_EC
3597 mask_k
|= SSL_kECDHE
;
3600 #ifndef OPENSSL_NO_PSK
3603 if (mask_k
& SSL_kRSA
)
3604 mask_k
|= SSL_kRSAPSK
;
3605 if (mask_k
& SSL_kDHE
)
3606 mask_k
|= SSL_kDHEPSK
;
3607 if (mask_k
& SSL_kECDHE
)
3608 mask_k
|= SSL_kECDHEPSK
;
3611 s
->s3
.tmp
.mask_k
= mask_k
;
3612 s
->s3
.tmp
.mask_a
= mask_a
;
3615 #ifndef OPENSSL_NO_EC
3617 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3619 if (s
->s3
.tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3620 /* key usage, if present, must allow signing */
3621 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3622 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3623 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3627 return 1; /* all checks are ok */
3632 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3633 size_t *serverinfo_length
)
3635 CERT_PKEY
*cpk
= s
->s3
.tmp
.cert
;
3636 *serverinfo_length
= 0;
3638 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3641 *serverinfo
= cpk
->serverinfo
;
3642 *serverinfo_length
= cpk
->serverinfo_length
;
3646 void ssl_update_cache(SSL
*s
, int mode
)
3651 * If the session_id_length is 0, we are not supposed to cache it, and it
3652 * would be rather hard to do anyway :-)
3654 if (s
->session
->session_id_length
== 0)
3658 * If sid_ctx_length is 0 there is no specific application context
3659 * associated with this session, so when we try to resume it and
3660 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3661 * indication that this is actually a session for the proper application
3662 * context, and the *handshake* will fail, not just the resumption attempt.
3663 * Do not cache (on the server) these sessions that are not resumable
3664 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3666 if (s
->server
&& s
->session
->sid_ctx_length
== 0
3667 && (s
->verify_mode
& SSL_VERIFY_PEER
) != 0)
3670 i
= s
->session_ctx
->session_cache_mode
;
3672 && (!s
->hit
|| SSL_IS_TLS13(s
))) {
3674 * Add the session to the internal cache. In server side TLSv1.3 we
3675 * normally don't do this because by default it's a full stateless ticket
3676 * with only a dummy session id so there is no reason to cache it,
3678 * - we are doing early_data, in which case we cache so that we can
3680 * - the application has set a remove_session_cb so needs to know about
3681 * session timeout events
3682 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3684 if ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) == 0
3685 && (!SSL_IS_TLS13(s
)
3687 || (s
->max_early_data
> 0
3688 && (s
->options
& SSL_OP_NO_ANTI_REPLAY
) == 0)
3689 || s
->session_ctx
->remove_session_cb
!= NULL
3690 || (s
->options
& SSL_OP_NO_TICKET
) != 0))
3691 SSL_CTX_add_session(s
->session_ctx
, s
->session
);
3694 * Add the session to the external cache. We do this even in server side
3695 * TLSv1.3 without early data because some applications just want to
3696 * know about the creation of a session and aren't doing a full cache.
3698 if (s
->session_ctx
->new_session_cb
!= NULL
) {
3699 SSL_SESSION_up_ref(s
->session
);
3700 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3701 SSL_SESSION_free(s
->session
);
3705 /* auto flush every 255 connections */
3706 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3707 TSAN_QUALIFIER
int *stat
;
3708 if (mode
& SSL_SESS_CACHE_CLIENT
)
3709 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3711 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3712 if ((tsan_load(stat
) & 0xff) == 0xff)
3713 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3717 const SSL_METHOD
*SSL_CTX_get_ssl_method(const SSL_CTX
*ctx
)
3722 const SSL_METHOD
*SSL_get_ssl_method(const SSL
*s
)
3727 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3731 if (s
->method
!= meth
) {
3732 const SSL_METHOD
*sm
= s
->method
;
3733 int (*hf
) (SSL
*) = s
->handshake_func
;
3735 if (sm
->version
== meth
->version
)
3740 ret
= s
->method
->ssl_new(s
);
3743 if (hf
== sm
->ssl_connect
)
3744 s
->handshake_func
= meth
->ssl_connect
;
3745 else if (hf
== sm
->ssl_accept
)
3746 s
->handshake_func
= meth
->ssl_accept
;
3751 int SSL_get_error(const SSL
*s
, int i
)
3758 return SSL_ERROR_NONE
;
3761 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3762 * where we do encode the error
3764 if ((l
= ERR_peek_error()) != 0) {
3765 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3766 return SSL_ERROR_SYSCALL
;
3768 return SSL_ERROR_SSL
;
3771 if (SSL_want_read(s
)) {
3772 bio
= SSL_get_rbio(s
);
3773 if (BIO_should_read(bio
))
3774 return SSL_ERROR_WANT_READ
;
3775 else if (BIO_should_write(bio
))
3777 * This one doesn't make too much sense ... We never try to write
3778 * to the rbio, and an application program where rbio and wbio
3779 * are separate couldn't even know what it should wait for.
3780 * However if we ever set s->rwstate incorrectly (so that we have
3781 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3782 * wbio *are* the same, this test works around that bug; so it
3783 * might be safer to keep it.
3785 return SSL_ERROR_WANT_WRITE
;
3786 else if (BIO_should_io_special(bio
)) {
3787 reason
= BIO_get_retry_reason(bio
);
3788 if (reason
== BIO_RR_CONNECT
)
3789 return SSL_ERROR_WANT_CONNECT
;
3790 else if (reason
== BIO_RR_ACCEPT
)
3791 return SSL_ERROR_WANT_ACCEPT
;
3793 return SSL_ERROR_SYSCALL
; /* unknown */
3797 if (SSL_want_write(s
)) {
3798 /* Access wbio directly - in order to use the buffered bio if present */
3800 if (BIO_should_write(bio
))
3801 return SSL_ERROR_WANT_WRITE
;
3802 else if (BIO_should_read(bio
))
3804 * See above (SSL_want_read(s) with BIO_should_write(bio))
3806 return SSL_ERROR_WANT_READ
;
3807 else if (BIO_should_io_special(bio
)) {
3808 reason
= BIO_get_retry_reason(bio
);
3809 if (reason
== BIO_RR_CONNECT
)
3810 return SSL_ERROR_WANT_CONNECT
;
3811 else if (reason
== BIO_RR_ACCEPT
)
3812 return SSL_ERROR_WANT_ACCEPT
;
3814 return SSL_ERROR_SYSCALL
;
3817 if (SSL_want_x509_lookup(s
))
3818 return SSL_ERROR_WANT_X509_LOOKUP
;
3819 if (SSL_want_async(s
))
3820 return SSL_ERROR_WANT_ASYNC
;
3821 if (SSL_want_async_job(s
))
3822 return SSL_ERROR_WANT_ASYNC_JOB
;
3823 if (SSL_want_client_hello_cb(s
))
3824 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3826 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3827 (s
->s3
.warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3828 return SSL_ERROR_ZERO_RETURN
;
3830 return SSL_ERROR_SYSCALL
;
3833 static int ssl_do_handshake_intern(void *vargs
)
3835 struct ssl_async_args
*args
;
3838 args
= (struct ssl_async_args
*)vargs
;
3841 return s
->handshake_func(s
);
3844 int SSL_do_handshake(SSL
*s
)
3848 if (s
->handshake_func
== NULL
) {
3849 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3853 ossl_statem_check_finish_init(s
, -1);
3855 s
->method
->ssl_renegotiate_check(s
, 0);
3857 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3858 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3859 struct ssl_async_args args
;
3863 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3865 ret
= s
->handshake_func(s
);
3871 void SSL_set_accept_state(SSL
*s
)
3875 ossl_statem_clear(s
);
3876 s
->handshake_func
= s
->method
->ssl_accept
;
3880 void SSL_set_connect_state(SSL
*s
)
3884 ossl_statem_clear(s
);
3885 s
->handshake_func
= s
->method
->ssl_connect
;
3889 int ssl_undefined_function(SSL
*s
)
3891 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3895 int ssl_undefined_void_function(void)
3897 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3898 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3902 int ssl_undefined_const_function(const SSL
*s
)
3907 const SSL_METHOD
*ssl_bad_method(int ver
)
3909 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3913 const char *ssl_protocol_to_string(int version
)
3917 case TLS1_3_VERSION
:
3920 case TLS1_2_VERSION
:
3923 case TLS1_1_VERSION
:
3938 case DTLS1_2_VERSION
:
3946 const char *SSL_get_version(const SSL
*s
)
3948 return ssl_protocol_to_string(s
->version
);
3951 static int dup_ca_names(STACK_OF(X509_NAME
) **dst
, STACK_OF(X509_NAME
) *src
)
3953 STACK_OF(X509_NAME
) *sk
;
3962 if ((sk
= sk_X509_NAME_new_null()) == NULL
)
3964 for (i
= 0; i
< sk_X509_NAME_num(src
); i
++) {
3965 xn
= X509_NAME_dup(sk_X509_NAME_value(src
, i
));
3967 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3970 if (sk_X509_NAME_insert(sk
, xn
, i
) == 0) {
3972 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3981 SSL
*SSL_dup(SSL
*s
)
3986 /* If we're not quiescent, just up_ref! */
3987 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3988 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3993 * Otherwise, copy configuration state, and session if set.
3995 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3998 if (s
->session
!= NULL
) {
4000 * Arranges to share the same session via up_ref. This "copies"
4001 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4003 if (!SSL_copy_session_id(ret
, s
))
4007 * No session has been established yet, so we have to expect that
4008 * s->cert or ret->cert will be changed later -- they should not both
4009 * point to the same object, and thus we can't use
4010 * SSL_copy_session_id.
4012 if (!SSL_set_ssl_method(ret
, s
->method
))
4015 if (s
->cert
!= NULL
) {
4016 ssl_cert_free(ret
->cert
);
4017 ret
->cert
= ssl_cert_dup(s
->cert
);
4018 if (ret
->cert
== NULL
)
4022 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
4023 (int)s
->sid_ctx_length
))
4027 if (!ssl_dane_dup(ret
, s
))
4029 ret
->version
= s
->version
;
4030 ret
->options
= s
->options
;
4031 ret
->min_proto_version
= s
->min_proto_version
;
4032 ret
->max_proto_version
= s
->max_proto_version
;
4033 ret
->mode
= s
->mode
;
4034 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
4035 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
4036 ret
->msg_callback
= s
->msg_callback
;
4037 ret
->msg_callback_arg
= s
->msg_callback_arg
;
4038 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
4039 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
4040 ret
->generate_session_id
= s
->generate_session_id
;
4042 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
4044 /* copy app data, a little dangerous perhaps */
4045 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
4048 ret
->server
= s
->server
;
4049 if (s
->handshake_func
) {
4051 SSL_set_accept_state(ret
);
4053 SSL_set_connect_state(ret
);
4055 ret
->shutdown
= s
->shutdown
;
4058 ret
->default_passwd_callback
= s
->default_passwd_callback
;
4059 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
4061 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
4063 /* dup the cipher_list and cipher_list_by_id stacks */
4064 if (s
->cipher_list
!= NULL
) {
4065 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
4068 if (s
->cipher_list_by_id
!= NULL
)
4069 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
4073 /* Dup the client_CA list */
4074 if (!dup_ca_names(&ret
->ca_names
, s
->ca_names
)
4075 || !dup_ca_names(&ret
->client_ca_names
, s
->client_ca_names
))
4085 void ssl_clear_cipher_ctx(SSL
*s
)
4087 if (s
->enc_read_ctx
!= NULL
) {
4088 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
4089 s
->enc_read_ctx
= NULL
;
4091 if (s
->enc_write_ctx
!= NULL
) {
4092 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
4093 s
->enc_write_ctx
= NULL
;
4095 #ifndef OPENSSL_NO_COMP
4096 COMP_CTX_free(s
->expand
);
4098 COMP_CTX_free(s
->compress
);
4103 X509
*SSL_get_certificate(const SSL
*s
)
4105 if (s
->cert
!= NULL
)
4106 return s
->cert
->key
->x509
;
4111 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
4113 if (s
->cert
!= NULL
)
4114 return s
->cert
->key
->privatekey
;
4119 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
4121 if (ctx
->cert
!= NULL
)
4122 return ctx
->cert
->key
->x509
;
4127 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
4129 if (ctx
->cert
!= NULL
)
4130 return ctx
->cert
->key
->privatekey
;
4135 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
4137 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
4138 return s
->session
->cipher
;
4142 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
4144 return s
->s3
.tmp
.new_cipher
;
4147 const COMP_METHOD
*SSL_get_current_compression(const SSL
*s
)
4149 #ifndef OPENSSL_NO_COMP
4150 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
4156 const COMP_METHOD
*SSL_get_current_expansion(const SSL
*s
)
4158 #ifndef OPENSSL_NO_COMP
4159 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
4165 int ssl_init_wbio_buffer(SSL
*s
)
4169 if (s
->bbio
!= NULL
) {
4170 /* Already buffered. */
4174 bbio
= BIO_new(BIO_f_buffer());
4175 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
4177 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
4181 s
->wbio
= BIO_push(bbio
, s
->wbio
);
4186 int ssl_free_wbio_buffer(SSL
*s
)
4188 /* callers ensure s is never null */
4189 if (s
->bbio
== NULL
)
4192 s
->wbio
= BIO_pop(s
->wbio
);
4199 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
4201 ctx
->quiet_shutdown
= mode
;
4204 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
4206 return ctx
->quiet_shutdown
;
4209 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
4211 s
->quiet_shutdown
= mode
;
4214 int SSL_get_quiet_shutdown(const SSL
*s
)
4216 return s
->quiet_shutdown
;
4219 void SSL_set_shutdown(SSL
*s
, int mode
)
4224 int SSL_get_shutdown(const SSL
*s
)
4229 int SSL_version(const SSL
*s
)
4234 int SSL_client_version(const SSL
*s
)
4236 return s
->client_version
;
4239 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
4244 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
4247 if (ssl
->ctx
== ctx
)
4250 ctx
= ssl
->session_ctx
;
4251 new_cert
= ssl_cert_dup(ctx
->cert
);
4252 if (new_cert
== NULL
) {
4256 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
4257 ssl_cert_free(new_cert
);
4261 ssl_cert_free(ssl
->cert
);
4262 ssl
->cert
= new_cert
;
4265 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4266 * so setter APIs must prevent invalid lengths from entering the system.
4268 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
4272 * If the session ID context matches that of the parent SSL_CTX,
4273 * inherit it from the new SSL_CTX as well. If however the context does
4274 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4275 * leave it unchanged.
4277 if ((ssl
->ctx
!= NULL
) &&
4278 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
4279 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
4280 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
4281 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
4284 SSL_CTX_up_ref(ctx
);
4285 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
4291 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
4293 return X509_STORE_set_default_paths_ex(ctx
->cert_store
, ctx
->libctx
,
4297 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
4299 X509_LOOKUP
*lookup
;
4301 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
4305 /* We ignore errors, in case the directory doesn't exist */
4308 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4315 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
4317 X509_LOOKUP
*lookup
;
4319 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
4323 /* We ignore errors, in case the directory doesn't exist */
4326 X509_LOOKUP_load_file_ex(lookup
, NULL
, X509_FILETYPE_DEFAULT
, ctx
->libctx
,
4334 int SSL_CTX_set_default_verify_store(SSL_CTX
*ctx
)
4336 X509_LOOKUP
*lookup
;
4338 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_store());
4342 /* We ignore errors, in case the directory doesn't exist */
4345 X509_LOOKUP_add_store_ex(lookup
, NULL
, ctx
->libctx
, ctx
->propq
);
4352 int SSL_CTX_load_verify_file(SSL_CTX
*ctx
, const char *CAfile
)
4354 return X509_STORE_load_file_ex(ctx
->cert_store
, CAfile
, ctx
->libctx
,
4358 int SSL_CTX_load_verify_dir(SSL_CTX
*ctx
, const char *CApath
)
4360 return X509_STORE_load_path(ctx
->cert_store
, CApath
);
4363 int SSL_CTX_load_verify_store(SSL_CTX
*ctx
, const char *CAstore
)
4365 return X509_STORE_load_store_ex(ctx
->cert_store
, CAstore
, ctx
->libctx
,
4369 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
4372 if (CAfile
== NULL
&& CApath
== NULL
)
4374 if (CAfile
!= NULL
&& !SSL_CTX_load_verify_file(ctx
, CAfile
))
4376 if (CApath
!= NULL
&& !SSL_CTX_load_verify_dir(ctx
, CApath
))
4381 void SSL_set_info_callback(SSL
*ssl
,
4382 void (*cb
) (const SSL
*ssl
, int type
, int val
))
4384 ssl
->info_callback
= cb
;
4388 * One compiler (Diab DCC) doesn't like argument names in returned function
4391 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
4394 return ssl
->info_callback
;
4397 void SSL_set_verify_result(SSL
*ssl
, long arg
)
4399 ssl
->verify_result
= arg
;
4402 long SSL_get_verify_result(const SSL
*ssl
)
4404 return ssl
->verify_result
;
4407 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4410 return sizeof(ssl
->s3
.client_random
);
4411 if (outlen
> sizeof(ssl
->s3
.client_random
))
4412 outlen
= sizeof(ssl
->s3
.client_random
);
4413 memcpy(out
, ssl
->s3
.client_random
, outlen
);
4417 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4420 return sizeof(ssl
->s3
.server_random
);
4421 if (outlen
> sizeof(ssl
->s3
.server_random
))
4422 outlen
= sizeof(ssl
->s3
.server_random
);
4423 memcpy(out
, ssl
->s3
.server_random
, outlen
);
4427 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
4428 unsigned char *out
, size_t outlen
)
4431 return session
->master_key_length
;
4432 if (outlen
> session
->master_key_length
)
4433 outlen
= session
->master_key_length
;
4434 memcpy(out
, session
->master_key
, outlen
);
4438 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
4441 if (len
> sizeof(sess
->master_key
))
4444 memcpy(sess
->master_key
, in
, len
);
4445 sess
->master_key_length
= len
;
4450 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4452 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4455 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4457 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4460 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4462 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4465 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4467 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4470 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4472 return ctx
->cert_store
;
4475 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4477 X509_STORE_free(ctx
->cert_store
);
4478 ctx
->cert_store
= store
;
4481 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4484 X509_STORE_up_ref(store
);
4485 SSL_CTX_set_cert_store(ctx
, store
);
4488 int SSL_want(const SSL
*s
)
4494 * \brief Set the callback for generating temporary DH keys.
4495 * \param ctx the SSL context.
4496 * \param dh the callback
4499 #ifndef OPENSSL_NO_DH
4500 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4501 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4504 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4507 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4510 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4514 #ifndef OPENSSL_NO_PSK
4515 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4517 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4518 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4521 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4522 if (identity_hint
!= NULL
) {
4523 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4524 if (ctx
->cert
->psk_identity_hint
== NULL
)
4527 ctx
->cert
->psk_identity_hint
= NULL
;
4531 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4536 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4537 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4540 OPENSSL_free(s
->cert
->psk_identity_hint
);
4541 if (identity_hint
!= NULL
) {
4542 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4543 if (s
->cert
->psk_identity_hint
== NULL
)
4546 s
->cert
->psk_identity_hint
= NULL
;
4550 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4552 if (s
== NULL
|| s
->session
== NULL
)
4554 return s
->session
->psk_identity_hint
;
4557 const char *SSL_get_psk_identity(const SSL
*s
)
4559 if (s
== NULL
|| s
->session
== NULL
)
4561 return s
->session
->psk_identity
;
4564 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4566 s
->psk_client_callback
= cb
;
4569 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4571 ctx
->psk_client_callback
= cb
;
4574 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4576 s
->psk_server_callback
= cb
;
4579 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4581 ctx
->psk_server_callback
= cb
;
4585 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4587 s
->psk_find_session_cb
= cb
;
4590 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4591 SSL_psk_find_session_cb_func cb
)
4593 ctx
->psk_find_session_cb
= cb
;
4596 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4598 s
->psk_use_session_cb
= cb
;
4601 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4602 SSL_psk_use_session_cb_func cb
)
4604 ctx
->psk_use_session_cb
= cb
;
4607 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4608 void (*cb
) (int write_p
, int version
,
4609 int content_type
, const void *buf
,
4610 size_t len
, SSL
*ssl
, void *arg
))
4612 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4615 void SSL_set_msg_callback(SSL
*ssl
,
4616 void (*cb
) (int write_p
, int version
,
4617 int content_type
, const void *buf
,
4618 size_t len
, SSL
*ssl
, void *arg
))
4620 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4623 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4624 int (*cb
) (SSL
*ssl
,
4628 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4629 (void (*)(void))cb
);
4632 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4633 int (*cb
) (SSL
*ssl
,
4634 int is_forward_secure
))
4636 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4637 (void (*)(void))cb
);
4640 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4641 size_t (*cb
) (SSL
*ssl
, int type
,
4642 size_t len
, void *arg
))
4644 ctx
->record_padding_cb
= cb
;
4647 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4649 ctx
->record_padding_arg
= arg
;
4652 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX
*ctx
)
4654 return ctx
->record_padding_arg
;
4657 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4659 /* block size of 0 or 1 is basically no padding */
4660 if (block_size
== 1)
4661 ctx
->block_padding
= 0;
4662 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4663 ctx
->block_padding
= block_size
;
4669 int SSL_set_record_padding_callback(SSL
*ssl
,
4670 size_t (*cb
) (SSL
*ssl
, int type
,
4671 size_t len
, void *arg
))
4675 b
= SSL_get_wbio(ssl
);
4676 if (b
== NULL
|| !BIO_get_ktls_send(b
)) {
4677 ssl
->record_padding_cb
= cb
;
4683 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4685 ssl
->record_padding_arg
= arg
;
4688 void *SSL_get_record_padding_callback_arg(const SSL
*ssl
)
4690 return ssl
->record_padding_arg
;
4693 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4695 /* block size of 0 or 1 is basically no padding */
4696 if (block_size
== 1)
4697 ssl
->block_padding
= 0;
4698 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4699 ssl
->block_padding
= block_size
;
4705 int SSL_set_num_tickets(SSL
*s
, size_t num_tickets
)
4707 s
->num_tickets
= num_tickets
;
4712 size_t SSL_get_num_tickets(const SSL
*s
)
4714 return s
->num_tickets
;
4717 int SSL_CTX_set_num_tickets(SSL_CTX
*ctx
, size_t num_tickets
)
4719 ctx
->num_tickets
= num_tickets
;
4724 size_t SSL_CTX_get_num_tickets(const SSL_CTX
*ctx
)
4726 return ctx
->num_tickets
;
4730 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4731 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4732 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4733 * Returns the newly allocated ctx;
4736 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4738 ssl_clear_hash_ctx(hash
);
4739 *hash
= EVP_MD_CTX_new();
4740 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4741 EVP_MD_CTX_free(*hash
);
4748 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4751 EVP_MD_CTX_free(*hash
);
4755 /* Retrieve handshake hashes */
4756 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4759 EVP_MD_CTX
*ctx
= NULL
;
4760 EVP_MD_CTX
*hdgst
= s
->s3
.handshake_dgst
;
4761 int hashleni
= EVP_MD_CTX_size(hdgst
);
4764 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4765 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4766 ERR_R_INTERNAL_ERROR
);
4770 ctx
= EVP_MD_CTX_new();
4774 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4775 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4776 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4777 ERR_R_INTERNAL_ERROR
);
4781 *hashlen
= hashleni
;
4785 EVP_MD_CTX_free(ctx
);
4789 int SSL_session_reused(const SSL
*s
)
4794 int SSL_is_server(const SSL
*s
)
4799 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4800 void SSL_set_debug(SSL
*s
, int debug
)
4802 /* Old function was do-nothing anyway... */
4808 void SSL_set_security_level(SSL
*s
, int level
)
4810 s
->cert
->sec_level
= level
;
4813 int SSL_get_security_level(const SSL
*s
)
4815 return s
->cert
->sec_level
;
4818 void SSL_set_security_callback(SSL
*s
,
4819 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4820 int op
, int bits
, int nid
,
4821 void *other
, void *ex
))
4823 s
->cert
->sec_cb
= cb
;
4826 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4827 const SSL_CTX
*ctx
, int op
,
4828 int bits
, int nid
, void *other
,
4830 return s
->cert
->sec_cb
;
4833 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4835 s
->cert
->sec_ex
= ex
;
4838 void *SSL_get0_security_ex_data(const SSL
*s
)
4840 return s
->cert
->sec_ex
;
4843 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4845 ctx
->cert
->sec_level
= level
;
4848 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4850 return ctx
->cert
->sec_level
;
4853 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4854 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4855 int op
, int bits
, int nid
,
4856 void *other
, void *ex
))
4858 ctx
->cert
->sec_cb
= cb
;
4861 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4867 return ctx
->cert
->sec_cb
;
4870 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4872 ctx
->cert
->sec_ex
= ex
;
4875 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4877 return ctx
->cert
->sec_ex
;
4881 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4882 * can return unsigned long, instead of the generic long return value from the
4883 * control interface.
4885 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4887 return ctx
->options
;
4890 unsigned long SSL_get_options(const SSL
*s
)
4895 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4897 return ctx
->options
|= op
;
4900 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4902 return s
->options
|= op
;
4905 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4907 return ctx
->options
&= ~op
;
4910 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4912 return s
->options
&= ~op
;
4915 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4917 return s
->verified_chain
;
4920 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4922 #ifndef OPENSSL_NO_CT
4925 * Moves SCTs from the |src| stack to the |dst| stack.
4926 * The source of each SCT will be set to |origin|.
4927 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4929 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4931 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4932 sct_source_t origin
)
4938 *dst
= sk_SCT_new_null();
4940 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4945 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4946 if (SCT_set_source(sct
, origin
) != 1)
4949 if (sk_SCT_push(*dst
, sct
) <= 0)
4957 sk_SCT_push(src
, sct
); /* Put the SCT back */
4962 * Look for data collected during ServerHello and parse if found.
4963 * Returns the number of SCTs extracted.
4965 static int ct_extract_tls_extension_scts(SSL
*s
)
4967 int scts_extracted
= 0;
4969 if (s
->ext
.scts
!= NULL
) {
4970 const unsigned char *p
= s
->ext
.scts
;
4971 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4973 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4975 SCT_LIST_free(scts
);
4978 return scts_extracted
;
4982 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4983 * contains an SCT X509 extension. They will be stored in |s->scts|.
4985 * - The number of SCTs extracted, assuming an OCSP response exists.
4986 * - 0 if no OCSP response exists or it contains no SCTs.
4987 * - A negative integer if an error occurs.
4989 static int ct_extract_ocsp_response_scts(SSL
*s
)
4991 # ifndef OPENSSL_NO_OCSP
4992 int scts_extracted
= 0;
4993 const unsigned char *p
;
4994 OCSP_BASICRESP
*br
= NULL
;
4995 OCSP_RESPONSE
*rsp
= NULL
;
4996 STACK_OF(SCT
) *scts
= NULL
;
4999 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
5002 p
= s
->ext
.ocsp
.resp
;
5003 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
5007 br
= OCSP_response_get1_basic(rsp
);
5011 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
5012 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
5018 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
5020 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
5021 if (scts_extracted
< 0)
5025 SCT_LIST_free(scts
);
5026 OCSP_BASICRESP_free(br
);
5027 OCSP_RESPONSE_free(rsp
);
5028 return scts_extracted
;
5030 /* Behave as if no OCSP response exists */
5036 * Attempts to extract SCTs from the peer certificate.
5037 * Return the number of SCTs extracted, or a negative integer if an error
5040 static int ct_extract_x509v3_extension_scts(SSL
*s
)
5042 int scts_extracted
= 0;
5043 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
5046 STACK_OF(SCT
) *scts
=
5047 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
5050 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
5052 SCT_LIST_free(scts
);
5055 return scts_extracted
;
5059 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5060 * response (if it exists) and X509v3 extensions in the certificate.
5061 * Returns NULL if an error occurs.
5063 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
5065 if (!s
->scts_parsed
) {
5066 if (ct_extract_tls_extension_scts(s
) < 0 ||
5067 ct_extract_ocsp_response_scts(s
) < 0 ||
5068 ct_extract_x509v3_extension_scts(s
) < 0)
5078 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
5079 const STACK_OF(SCT
) *scts
, void *unused_arg
)
5084 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
5085 const STACK_OF(SCT
) *scts
, void *unused_arg
)
5087 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
5090 for (i
= 0; i
< count
; ++i
) {
5091 SCT
*sct
= sk_SCT_value(scts
, i
);
5092 int status
= SCT_get_validation_status(sct
);
5094 if (status
== SCT_VALIDATION_STATUS_VALID
)
5097 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
5101 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
5105 * Since code exists that uses the custom extension handler for CT, look
5106 * for this and throw an error if they have already registered to use CT.
5108 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
5109 TLSEXT_TYPE_signed_certificate_timestamp
))
5111 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
5112 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
5116 if (callback
!= NULL
) {
5118 * If we are validating CT, then we MUST accept SCTs served via OCSP
5120 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
5124 s
->ct_validation_callback
= callback
;
5125 s
->ct_validation_callback_arg
= arg
;
5130 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
5131 ssl_ct_validation_cb callback
, void *arg
)
5134 * Since code exists that uses the custom extension handler for CT, look for
5135 * this and throw an error if they have already registered to use CT.
5137 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
5138 TLSEXT_TYPE_signed_certificate_timestamp
))
5140 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
5141 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
5145 ctx
->ct_validation_callback
= callback
;
5146 ctx
->ct_validation_callback_arg
= arg
;
5150 int SSL_ct_is_enabled(const SSL
*s
)
5152 return s
->ct_validation_callback
!= NULL
;
5155 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
5157 return ctx
->ct_validation_callback
!= NULL
;
5160 int ssl_validate_ct(SSL
*s
)
5163 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
5165 SSL_DANE
*dane
= &s
->dane
;
5166 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
5167 const STACK_OF(SCT
) *scts
;
5170 * If no callback is set, the peer is anonymous, or its chain is invalid,
5171 * skip SCT validation - just return success. Applications that continue
5172 * handshakes without certificates, with unverified chains, or pinned leaf
5173 * certificates are outside the scope of the WebPKI and CT.
5175 * The above exclusions notwithstanding the vast majority of peers will
5176 * have rather ordinary certificate chains validated by typical
5177 * applications that perform certificate verification and therefore will
5178 * process SCTs when enabled.
5180 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
5181 s
->verify_result
!= X509_V_OK
||
5182 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
5186 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5187 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5189 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
5190 switch (dane
->mtlsa
->usage
) {
5191 case DANETLS_USAGE_DANE_TA
:
5192 case DANETLS_USAGE_DANE_EE
:
5197 ctx
= CT_POLICY_EVAL_CTX_new_ex(s
->ctx
->libctx
, s
->ctx
->propq
);
5199 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
5200 ERR_R_MALLOC_FAILURE
);
5204 issuer
= sk_X509_value(s
->verified_chain
, 1);
5205 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
5206 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
5207 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
5208 CT_POLICY_EVAL_CTX_set_time(
5209 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
5211 scts
= SSL_get0_peer_scts(s
);
5214 * This function returns success (> 0) only when all the SCTs are valid, 0
5215 * when some are invalid, and < 0 on various internal errors (out of
5216 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5217 * reason to abort the handshake, that decision is up to the callback.
5218 * Therefore, we error out only in the unexpected case that the return
5219 * value is negative.
5221 * XXX: One might well argue that the return value of this function is an
5222 * unfortunate design choice. Its job is only to determine the validation
5223 * status of each of the provided SCTs. So long as it correctly separates
5224 * the wheat from the chaff it should return success. Failure in this case
5225 * ought to correspond to an inability to carry out its duties.
5227 if (SCT_LIST_validate(scts
, ctx
) < 0) {
5228 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5229 SSL_R_SCT_VERIFICATION_FAILED
);
5233 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
5235 ret
= 0; /* This function returns 0 on failure */
5237 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5238 SSL_R_CALLBACK_FAILED
);
5241 CT_POLICY_EVAL_CTX_free(ctx
);
5243 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5244 * failure return code here. Also the application may wish the complete
5245 * the handshake, and then disconnect cleanly at a higher layer, after
5246 * checking the verification status of the completed connection.
5248 * We therefore force a certificate verification failure which will be
5249 * visible via SSL_get_verify_result() and cached as part of any resumed
5252 * Note: the permissive callback is for information gathering only, always
5253 * returns success, and does not affect verification status. Only the
5254 * strict callback or a custom application-specified callback can trigger
5255 * connection failure or record a verification error.
5258 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
5262 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
5264 switch (validation_mode
) {
5266 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5268 case SSL_CT_VALIDATION_PERMISSIVE
:
5269 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
5270 case SSL_CT_VALIDATION_STRICT
:
5271 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
5275 int SSL_enable_ct(SSL
*s
, int validation_mode
)
5277 switch (validation_mode
) {
5279 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5281 case SSL_CT_VALIDATION_PERMISSIVE
:
5282 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
5283 case SSL_CT_VALIDATION_STRICT
:
5284 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
5288 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
5290 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
5293 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
5295 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
5298 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
5300 CTLOG_STORE_free(ctx
->ctlog_store
);
5301 ctx
->ctlog_store
= logs
;
5304 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
5306 return ctx
->ctlog_store
;
5309 #endif /* OPENSSL_NO_CT */
5311 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
5314 c
->client_hello_cb
= cb
;
5315 c
->client_hello_cb_arg
= arg
;
5318 int SSL_client_hello_isv2(SSL
*s
)
5320 if (s
->clienthello
== NULL
)
5322 return s
->clienthello
->isv2
;
5325 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
5327 if (s
->clienthello
== NULL
)
5329 return s
->clienthello
->legacy_version
;
5332 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
5334 if (s
->clienthello
== NULL
)
5337 *out
= s
->clienthello
->random
;
5338 return SSL3_RANDOM_SIZE
;
5341 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
5343 if (s
->clienthello
== NULL
)
5346 *out
= s
->clienthello
->session_id
;
5347 return s
->clienthello
->session_id_len
;
5350 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
5352 if (s
->clienthello
== NULL
)
5355 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
5356 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
5359 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
5361 if (s
->clienthello
== NULL
)
5364 *out
= s
->clienthello
->compressions
;
5365 return s
->clienthello
->compressions_len
;
5368 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
5374 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
5376 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5377 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5386 if ((present
= OPENSSL_malloc(sizeof(*present
) * num
)) == NULL
) {
5387 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT
,
5388 ERR_R_MALLOC_FAILURE
);
5391 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5392 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5394 if (ext
->received_order
>= num
)
5396 present
[ext
->received_order
] = ext
->type
;
5403 OPENSSL_free(present
);
5407 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
5413 if (s
->clienthello
== NULL
)
5415 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
5416 r
= s
->clienthello
->pre_proc_exts
+ i
;
5417 if (r
->present
&& r
->type
== type
) {
5419 *out
= PACKET_data(&r
->data
);
5421 *outlen
= PACKET_remaining(&r
->data
);
5428 int SSL_free_buffers(SSL
*ssl
)
5430 RECORD_LAYER
*rl
= &ssl
->rlayer
;
5432 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
5435 RECORD_LAYER_release(rl
);
5439 int SSL_alloc_buffers(SSL
*ssl
)
5441 return ssl3_setup_buffers(ssl
);
5444 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
5446 ctx
->keylog_callback
= cb
;
5449 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
5451 return ctx
->keylog_callback
;
5454 static int nss_keylog_int(const char *prefix
,
5456 const uint8_t *parameter_1
,
5457 size_t parameter_1_len
,
5458 const uint8_t *parameter_2
,
5459 size_t parameter_2_len
)
5462 char *cursor
= NULL
;
5467 if (ssl
->ctx
->keylog_callback
== NULL
)
5471 * Our output buffer will contain the following strings, rendered with
5472 * space characters in between, terminated by a NULL character: first the
5473 * prefix, then the first parameter, then the second parameter. The
5474 * meaning of each parameter depends on the specific key material being
5475 * logged. Note that the first and second parameters are encoded in
5476 * hexadecimal, so we need a buffer that is twice their lengths.
5478 prefix_len
= strlen(prefix
);
5479 out_len
= prefix_len
+ (2 * parameter_1_len
) + (2 * parameter_2_len
) + 3;
5480 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
5481 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
5482 ERR_R_MALLOC_FAILURE
);
5486 strcpy(cursor
, prefix
);
5487 cursor
+= prefix_len
;
5490 for (i
= 0; i
< parameter_1_len
; i
++) {
5491 sprintf(cursor
, "%02x", parameter_1
[i
]);
5496 for (i
= 0; i
< parameter_2_len
; i
++) {
5497 sprintf(cursor
, "%02x", parameter_2
[i
]);
5502 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5503 OPENSSL_clear_free(out
, out_len
);
5508 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5509 const uint8_t *encrypted_premaster
,
5510 size_t encrypted_premaster_len
,
5511 const uint8_t *premaster
,
5512 size_t premaster_len
)
5514 if (encrypted_premaster_len
< 8) {
5515 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5516 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5520 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5521 return nss_keylog_int("RSA",
5523 encrypted_premaster
,
5529 int ssl_log_secret(SSL
*ssl
,
5531 const uint8_t *secret
,
5534 return nss_keylog_int(label
,
5536 ssl
->s3
.client_random
,
5542 #define SSLV2_CIPHER_LEN 3
5544 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5548 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5550 if (PACKET_remaining(cipher_suites
) == 0) {
5551 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5552 SSL_R_NO_CIPHERS_SPECIFIED
);
5556 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5557 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5558 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5562 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5563 s
->s3
.tmp
.ciphers_raw
= NULL
;
5564 s
->s3
.tmp
.ciphers_rawlen
= 0;
5567 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5568 PACKET sslv2ciphers
= *cipher_suites
;
5569 unsigned int leadbyte
;
5573 * We store the raw ciphers list in SSLv3+ format so we need to do some
5574 * preprocessing to convert the list first. If there are any SSLv2 only
5575 * ciphersuites with a non-zero leading byte then we are going to
5576 * slightly over allocate because we won't store those. But that isn't a
5579 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5580 s
->s3
.tmp
.ciphers_raw
= raw
;
5582 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5583 ERR_R_MALLOC_FAILURE
);
5586 for (s
->s3
.tmp
.ciphers_rawlen
= 0;
5587 PACKET_remaining(&sslv2ciphers
) > 0;
5588 raw
+= TLS_CIPHER_LEN
) {
5589 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5591 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5594 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5595 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5597 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5598 s
->s3
.tmp
.ciphers_raw
= NULL
;
5599 s
->s3
.tmp
.ciphers_rawlen
= 0;
5603 s
->s3
.tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5605 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
.tmp
.ciphers_raw
,
5606 &s
->s3
.tmp
.ciphers_rawlen
)) {
5607 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5608 ERR_R_INTERNAL_ERROR
);
5614 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5615 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5616 STACK_OF(SSL_CIPHER
) **scsvs
)
5620 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5622 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5625 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5626 STACK_OF(SSL_CIPHER
) **skp
,
5627 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5628 int sslv2format
, int fatal
)
5630 const SSL_CIPHER
*c
;
5631 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5632 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5634 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5635 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5637 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5639 if (PACKET_remaining(cipher_suites
) == 0) {
5641 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5642 SSL_R_NO_CIPHERS_SPECIFIED
);
5644 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5648 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5650 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5651 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5653 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5654 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5658 sk
= sk_SSL_CIPHER_new_null();
5659 scsvs
= sk_SSL_CIPHER_new_null();
5660 if (sk
== NULL
|| scsvs
== NULL
) {
5662 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5663 ERR_R_MALLOC_FAILURE
);
5665 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5669 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5671 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5672 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5673 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5675 if (sslv2format
&& cipher
[0] != '\0')
5678 /* For SSLv2-compat, ignore leading 0-byte. */
5679 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5681 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5682 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5684 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5685 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5687 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5692 if (PACKET_remaining(cipher_suites
) > 0) {
5694 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5697 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5704 sk_SSL_CIPHER_free(sk
);
5705 if (scsvs_out
!= NULL
)
5708 sk_SSL_CIPHER_free(scsvs
);
5711 sk_SSL_CIPHER_free(sk
);
5712 sk_SSL_CIPHER_free(scsvs
);
5716 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5718 ctx
->max_early_data
= max_early_data
;
5723 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5725 return ctx
->max_early_data
;
5728 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5730 s
->max_early_data
= max_early_data
;
5735 uint32_t SSL_get_max_early_data(const SSL
*s
)
5737 return s
->max_early_data
;
5740 int SSL_CTX_set_recv_max_early_data(SSL_CTX
*ctx
, uint32_t recv_max_early_data
)
5742 ctx
->recv_max_early_data
= recv_max_early_data
;
5747 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX
*ctx
)
5749 return ctx
->recv_max_early_data
;
5752 int SSL_set_recv_max_early_data(SSL
*s
, uint32_t recv_max_early_data
)
5754 s
->recv_max_early_data
= recv_max_early_data
;
5759 uint32_t SSL_get_recv_max_early_data(const SSL
*s
)
5761 return s
->recv_max_early_data
;
5764 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5766 /* Return any active Max Fragment Len extension */
5767 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5768 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5770 /* return current SSL connection setting */
5771 return ssl
->max_send_fragment
;
5774 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5776 /* Return a value regarding an active Max Fragment Len extension */
5777 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5778 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5779 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5781 /* else limit |split_send_fragment| to current |max_send_fragment| */
5782 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5783 return ssl
->max_send_fragment
;
5785 /* return current SSL connection setting */
5786 return ssl
->split_send_fragment
;
5789 int SSL_stateless(SSL
*s
)
5793 /* Ensure there is no state left over from a previous invocation */
5799 s
->s3
.flags
|= TLS1_FLAGS_STATELESS
;
5800 ret
= SSL_accept(s
);
5801 s
->s3
.flags
&= ~TLS1_FLAGS_STATELESS
;
5803 if (ret
> 0 && s
->ext
.cookieok
)
5806 if (s
->hello_retry_request
== SSL_HRR_PENDING
&& !ossl_statem_in_error(s
))
5812 void SSL_CTX_set_post_handshake_auth(SSL_CTX
*ctx
, int val
)
5814 ctx
->pha_enabled
= val
;
5817 void SSL_set_post_handshake_auth(SSL
*ssl
, int val
)
5819 ssl
->pha_enabled
= val
;
5822 int SSL_verify_client_post_handshake(SSL
*ssl
)
5824 if (!SSL_IS_TLS13(ssl
)) {
5825 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_WRONG_SSL_VERSION
);
5829 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_NOT_SERVER
);
5833 if (!SSL_is_init_finished(ssl
)) {
5834 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_STILL_IN_INIT
);
5838 switch (ssl
->post_handshake_auth
) {
5840 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_EXTENSION_NOT_RECEIVED
);
5843 case SSL_PHA_EXT_SENT
:
5844 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, ERR_R_INTERNAL_ERROR
);
5846 case SSL_PHA_EXT_RECEIVED
:
5848 case SSL_PHA_REQUEST_PENDING
:
5849 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_PENDING
);
5851 case SSL_PHA_REQUESTED
:
5852 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_SENT
);
5856 ssl
->post_handshake_auth
= SSL_PHA_REQUEST_PENDING
;
5858 /* checks verify_mode and algorithm_auth */
5859 if (!send_certificate_request(ssl
)) {
5860 ssl
->post_handshake_auth
= SSL_PHA_EXT_RECEIVED
; /* restore on error */
5861 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_INVALID_CONFIG
);
5865 ossl_statem_set_in_init(ssl
, 1);
5869 int SSL_CTX_set_session_ticket_cb(SSL_CTX
*ctx
,
5870 SSL_CTX_generate_session_ticket_fn gen_cb
,
5871 SSL_CTX_decrypt_session_ticket_fn dec_cb
,
5874 ctx
->generate_ticket_cb
= gen_cb
;
5875 ctx
->decrypt_ticket_cb
= dec_cb
;
5876 ctx
->ticket_cb_data
= arg
;
5880 void SSL_CTX_set_allow_early_data_cb(SSL_CTX
*ctx
,
5881 SSL_allow_early_data_cb_fn cb
,
5884 ctx
->allow_early_data_cb
= cb
;
5885 ctx
->allow_early_data_cb_data
= arg
;
5888 void SSL_set_allow_early_data_cb(SSL
*s
,
5889 SSL_allow_early_data_cb_fn cb
,
5892 s
->allow_early_data_cb
= cb
;
5893 s
->allow_early_data_cb_data
= arg
;
5896 const EVP_CIPHER
*ssl_evp_cipher_fetch(OPENSSL_CTX
*libctx
,
5898 const char *properties
)
5902 #ifndef OPENSSL_NO_ENGINE
5906 * If there is an Engine available for this cipher we use the "implicit"
5907 * form to ensure we use that engine later.
5909 eng
= ENGINE_get_cipher_engine(nid
);
5912 return EVP_get_cipherbynid(nid
);
5916 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5918 ciph
= EVP_CIPHER_fetch(libctx
, OBJ_nid2sn(nid
), properties
);
5924 int ssl_evp_cipher_up_ref(const EVP_CIPHER
*cipher
)
5926 /* Don't up-ref an implicit EVP_CIPHER */
5927 if (EVP_CIPHER_provider(cipher
) == NULL
)
5931 * The cipher was explicitly fetched and therefore it is safe to cast
5934 return EVP_CIPHER_up_ref((EVP_CIPHER
*)cipher
);
5937 void ssl_evp_cipher_free(const EVP_CIPHER
*cipher
)
5942 if (EVP_CIPHER_provider(cipher
) != NULL
) {
5944 * The cipher was explicitly fetched and therefore it is safe to cast
5947 EVP_CIPHER_free((EVP_CIPHER
*)cipher
);
5951 const EVP_MD
*ssl_evp_md_fetch(OPENSSL_CTX
*libctx
,
5953 const char *properties
)
5957 #ifndef OPENSSL_NO_ENGINE
5961 * If there is an Engine available for this digest we use the "implicit"
5962 * form to ensure we use that engine later.
5964 eng
= ENGINE_get_digest_engine(nid
);
5967 return EVP_get_digestbynid(nid
);
5971 /* Otherwise we do an explicit fetch */
5973 md
= EVP_MD_fetch(libctx
, OBJ_nid2sn(nid
), properties
);
5978 int ssl_evp_md_up_ref(const EVP_MD
*md
)
5980 /* Don't up-ref an implicit EVP_MD */
5981 if (EVP_MD_provider(md
) == NULL
)
5985 * The digest was explicitly fetched and therefore it is safe to cast
5988 return EVP_MD_up_ref((EVP_MD
*)md
);
5991 void ssl_evp_md_free(const EVP_MD
*md
)
5996 if (EVP_MD_provider(md
) != NULL
) {
5998 * The digest was explicitly fetched and therefore it is safe to cast
6001 EVP_MD_free((EVP_MD
*)md
);