2 * Copyright 1995-2017 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 OpenSSL license (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
14 #include <openssl/objects.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/rand.h>
17 #include <openssl/ocsp.h>
18 #include <openssl/dh.h>
19 #include <openssl/engine.h>
20 #include <openssl/async.h>
21 #include <openssl/ct.h>
22 #include "internal/cryptlib.h"
23 #include "internal/rand.h"
24 #include "internal/refcount.h"
26 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
28 static int ssl_undefined_function_1(SSL
*ssl
, SSL3_RECORD
*r
, size_t s
, int t
)
33 return ssl_undefined_function(ssl
);
36 static int ssl_undefined_function_2(SSL
*ssl
, SSL3_RECORD
*r
, unsigned char *s
,
42 return ssl_undefined_function(ssl
);
45 static int ssl_undefined_function_3(SSL
*ssl
, unsigned char *r
,
46 unsigned char *s
, size_t t
, size_t *u
)
52 return ssl_undefined_function(ssl
);
55 static int ssl_undefined_function_4(SSL
*ssl
, int r
)
58 return ssl_undefined_function(ssl
);
61 static size_t ssl_undefined_function_5(SSL
*ssl
, const char *r
, size_t s
,
67 return ssl_undefined_function(ssl
);
70 static int ssl_undefined_function_6(int r
)
73 return ssl_undefined_function(NULL
);
76 static int ssl_undefined_function_7(SSL
*ssl
, unsigned char *r
, size_t s
,
77 const char *t
, size_t u
,
78 const unsigned char *v
, size_t w
, int x
)
87 return ssl_undefined_function(ssl
);
90 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
91 ssl_undefined_function_1
,
92 ssl_undefined_function_2
,
93 ssl_undefined_function
,
94 ssl_undefined_function_3
,
95 ssl_undefined_function_4
,
96 ssl_undefined_function_5
,
97 NULL
, /* client_finished_label */
98 0, /* client_finished_label_len */
99 NULL
, /* server_finished_label */
100 0, /* server_finished_label_len */
101 ssl_undefined_function_6
,
102 ssl_undefined_function_7
,
105 struct ssl_async_args
{
109 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
111 int (*func_read
) (SSL
*, void *, size_t, size_t *);
112 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
113 int (*func_other
) (SSL
*);
117 static const struct {
123 DANETLS_MATCHING_FULL
, 0, NID_undef
126 DANETLS_MATCHING_2256
, 1, NID_sha256
129 DANETLS_MATCHING_2512
, 2, NID_sha512
133 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
135 const EVP_MD
**mdevp
;
137 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
138 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
141 if (dctx
->mdevp
!= NULL
)
144 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
145 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
147 if (mdord
== NULL
|| mdevp
== NULL
) {
150 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
154 /* Install default entries */
155 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
158 if (dane_mds
[i
].nid
== NID_undef
||
159 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
161 mdevp
[dane_mds
[i
].mtype
] = md
;
162 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
172 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
174 OPENSSL_free(dctx
->mdevp
);
177 OPENSSL_free(dctx
->mdord
);
182 static void tlsa_free(danetls_record
*t
)
186 OPENSSL_free(t
->data
);
187 EVP_PKEY_free(t
->spki
);
191 static void dane_final(SSL_DANE
*dane
)
193 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
196 sk_X509_pop_free(dane
->certs
, X509_free
);
199 X509_free(dane
->mcert
);
207 * dane_copy - Copy dane configuration, sans verification state.
209 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
214 if (!DANETLS_ENABLED(&from
->dane
))
217 num
= sk_danetls_record_num(from
->dane
.trecs
);
218 dane_final(&to
->dane
);
219 to
->dane
.flags
= from
->dane
.flags
;
220 to
->dane
.dctx
= &to
->ctx
->dane
;
221 to
->dane
.trecs
= sk_danetls_record_new_reserve(NULL
, num
);
223 if (to
->dane
.trecs
== NULL
) {
224 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
228 for (i
= 0; i
< num
; ++i
) {
229 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
231 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
232 t
->data
, t
->dlen
) <= 0)
238 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
239 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
243 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
244 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
248 if (mtype
> dctx
->mdmax
) {
249 const EVP_MD
**mdevp
;
251 int n
= ((int)mtype
) + 1;
253 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
255 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
260 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
262 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
267 /* Zero-fill any gaps */
268 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
276 dctx
->mdevp
[mtype
] = md
;
277 /* Coerce ordinal of disabled matching types to 0 */
278 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
283 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
285 if (mtype
> dane
->dctx
->mdmax
)
287 return dane
->dctx
->mdevp
[mtype
];
290 static int dane_tlsa_add(SSL_DANE
*dane
,
293 uint8_t mtype
, unsigned char *data
, size_t dlen
)
296 const EVP_MD
*md
= NULL
;
297 int ilen
= (int)dlen
;
301 if (dane
->trecs
== NULL
) {
302 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
306 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
307 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
311 if (usage
> DANETLS_USAGE_LAST
) {
312 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
316 if (selector
> DANETLS_SELECTOR_LAST
) {
317 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
321 if (mtype
!= DANETLS_MATCHING_FULL
) {
322 md
= tlsa_md_get(dane
, mtype
);
324 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
329 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
330 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
334 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
338 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
339 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
344 t
->selector
= selector
;
346 t
->data
= OPENSSL_malloc(dlen
);
347 if (t
->data
== NULL
) {
349 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
352 memcpy(t
->data
, data
, dlen
);
355 /* Validate and cache full certificate or public key */
356 if (mtype
== DANETLS_MATCHING_FULL
) {
357 const unsigned char *p
= data
;
359 EVP_PKEY
*pkey
= NULL
;
362 case DANETLS_SELECTOR_CERT
:
363 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
364 dlen
!= (size_t)(p
- data
)) {
366 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
369 if (X509_get0_pubkey(cert
) == NULL
) {
371 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
375 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
381 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
382 * records that contain full certificates of trust-anchors that are
383 * not present in the wire chain. For usage PKIX-TA(0), we augment
384 * the chain with untrusted Full(0) certificates from DNS, in case
385 * they are missing from the chain.
387 if ((dane
->certs
== NULL
&&
388 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
389 !sk_X509_push(dane
->certs
, cert
)) {
390 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
397 case DANETLS_SELECTOR_SPKI
:
398 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
399 dlen
!= (size_t)(p
- data
)) {
401 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
406 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
407 * records that contain full bare keys of trust-anchors that are
408 * not present in the wire chain.
410 if (usage
== DANETLS_USAGE_DANE_TA
)
419 * Find the right insertion point for the new record.
421 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
422 * they can be processed first, as they require no chain building, and no
423 * expiration or hostname checks. Because DANE-EE(3) is numerically
424 * largest, this is accomplished via descending sort by "usage".
426 * We also sort in descending order by matching ordinal to simplify
427 * the implementation of digest agility in the verification code.
429 * The choice of order for the selector is not significant, so we
430 * use the same descending order for consistency.
432 num
= sk_danetls_record_num(dane
->trecs
);
433 for (i
= 0; i
< num
; ++i
) {
434 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
436 if (rec
->usage
> usage
)
438 if (rec
->usage
< usage
)
440 if (rec
->selector
> selector
)
442 if (rec
->selector
< selector
)
444 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
449 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
451 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
454 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
460 * Return 0 if there is only one version configured and it was disabled
461 * at configure time. Return 1 otherwise.
463 static int ssl_check_allowed_versions(int min_version
, int max_version
)
465 int minisdtls
= 0, maxisdtls
= 0;
467 /* Figure out if we're doing DTLS versions or TLS versions */
468 if (min_version
== DTLS1_BAD_VER
469 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
471 if (max_version
== DTLS1_BAD_VER
472 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
474 /* A wildcard version of 0 could be DTLS or TLS. */
475 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
476 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
477 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
481 if (minisdtls
|| maxisdtls
) {
482 /* Do DTLS version checks. */
483 if (min_version
== 0)
484 /* Ignore DTLS1_BAD_VER */
485 min_version
= DTLS1_VERSION
;
486 if (max_version
== 0)
487 max_version
= DTLS1_2_VERSION
;
488 #ifdef OPENSSL_NO_DTLS1_2
489 if (max_version
== DTLS1_2_VERSION
)
490 max_version
= DTLS1_VERSION
;
492 #ifdef OPENSSL_NO_DTLS1
493 if (min_version
== DTLS1_VERSION
)
494 min_version
= DTLS1_2_VERSION
;
496 /* Done massaging versions; do the check. */
498 #ifdef OPENSSL_NO_DTLS1
499 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
500 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
502 #ifdef OPENSSL_NO_DTLS1_2
503 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
504 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
509 /* Regular TLS version checks. */
510 if (min_version
== 0)
511 min_version
= SSL3_VERSION
;
512 if (max_version
== 0)
513 max_version
= TLS1_3_VERSION
;
514 #ifdef OPENSSL_NO_TLS1_3
515 if (max_version
== TLS1_3_VERSION
)
516 max_version
= TLS1_2_VERSION
;
518 #ifdef OPENSSL_NO_TLS1_2
519 if (max_version
== TLS1_2_VERSION
)
520 max_version
= TLS1_1_VERSION
;
522 #ifdef OPENSSL_NO_TLS1_1
523 if (max_version
== TLS1_1_VERSION
)
524 max_version
= TLS1_VERSION
;
526 #ifdef OPENSSL_NO_TLS1
527 if (max_version
== TLS1_VERSION
)
528 max_version
= SSL3_VERSION
;
530 #ifdef OPENSSL_NO_SSL3
531 if (min_version
== SSL3_VERSION
)
532 min_version
= TLS1_VERSION
;
534 #ifdef OPENSSL_NO_TLS1
535 if (min_version
== TLS1_VERSION
)
536 min_version
= TLS1_1_VERSION
;
538 #ifdef OPENSSL_NO_TLS1_1
539 if (min_version
== TLS1_1_VERSION
)
540 min_version
= TLS1_2_VERSION
;
542 #ifdef OPENSSL_NO_TLS1_2
543 if (min_version
== TLS1_2_VERSION
)
544 min_version
= TLS1_3_VERSION
;
546 /* Done massaging versions; do the check. */
548 #ifdef OPENSSL_NO_SSL3
549 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
551 #ifdef OPENSSL_NO_TLS1
552 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
554 #ifdef OPENSSL_NO_TLS1_1
555 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
557 #ifdef OPENSSL_NO_TLS1_2
558 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
560 #ifdef OPENSSL_NO_TLS1_3
561 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
569 static void clear_ciphers(SSL
*s
)
571 /* clear the current cipher */
572 ssl_clear_cipher_ctx(s
);
573 ssl_clear_hash_ctx(&s
->read_hash
);
574 ssl_clear_hash_ctx(&s
->write_hash
);
577 int SSL_clear(SSL
*s
)
579 if (s
->method
== NULL
) {
580 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
584 if (ssl_clear_bad_session(s
)) {
585 SSL_SESSION_free(s
->session
);
588 SSL_SESSION_free(s
->psksession
);
589 s
->psksession
= NULL
;
590 OPENSSL_free(s
->psksession_id
);
591 s
->psksession_id
= NULL
;
592 s
->psksession_id_len
= 0;
598 if (s
->renegotiate
) {
599 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
603 ossl_statem_clear(s
);
605 s
->version
= s
->method
->version
;
606 s
->client_version
= s
->version
;
607 s
->rwstate
= SSL_NOTHING
;
609 BUF_MEM_free(s
->init_buf
);
614 s
->key_update
= SSL_KEY_UPDATE_NONE
;
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
);
627 * Check to see if we were changed into a different method, if so, revert
630 if (s
->method
!= s
->ctx
->method
) {
631 s
->method
->ssl_free(s
);
632 s
->method
= s
->ctx
->method
;
633 if (!s
->method
->ssl_new(s
))
636 if (!s
->method
->ssl_clear(s
))
640 RECORD_LAYER_clear(&s
->rlayer
);
645 /** Used to change an SSL_CTXs default SSL method type */
646 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
648 STACK_OF(SSL_CIPHER
) *sk
;
652 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
653 &(ctx
->cipher_list_by_id
),
654 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
655 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
656 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
662 SSL
*SSL_new(SSL_CTX
*ctx
)
667 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
670 if (ctx
->method
== NULL
) {
671 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
675 s
= OPENSSL_zalloc(sizeof(*s
));
680 s
->lock
= CRYPTO_THREAD_lock_new();
681 if (s
->lock
== NULL
) {
688 * If not using the standard RAND (say for fuzzing), then don't use a
691 if (RAND_get_rand_method() == RAND_OpenSSL()) {
693 RAND_DRBG_new(RAND_DRBG_NID
, RAND_DRBG_FLAG_CTR_USE_DF
,
694 RAND_DRBG_get0_public());
696 || RAND_DRBG_instantiate(s
->drbg
,
697 (const unsigned char *) SSL_version_str
,
698 sizeof(SSL_version_str
) - 1) == 0)
702 RECORD_LAYER_init(&s
->rlayer
, s
);
704 s
->options
= ctx
->options
;
705 s
->dane
.flags
= ctx
->dane
.flags
;
706 s
->min_proto_version
= ctx
->min_proto_version
;
707 s
->max_proto_version
= ctx
->max_proto_version
;
709 s
->max_cert_list
= ctx
->max_cert_list
;
710 s
->max_early_data
= ctx
->max_early_data
;
713 * Earlier library versions used to copy the pointer to the CERT, not
714 * its contents; only when setting new parameters for the per-SSL
715 * copy, ssl_cert_new would be called (and the direct reference to
716 * the per-SSL_CTX settings would be lost, but those still were
717 * indirectly accessed for various purposes, and for that reason they
718 * used to be known as s->ctx->default_cert). Now we don't look at the
719 * SSL_CTX's CERT after having duplicated it once.
721 s
->cert
= ssl_cert_dup(ctx
->cert
);
725 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
726 s
->msg_callback
= ctx
->msg_callback
;
727 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
728 s
->verify_mode
= ctx
->verify_mode
;
729 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
730 s
->record_padding_cb
= ctx
->record_padding_cb
;
731 s
->record_padding_arg
= ctx
->record_padding_arg
;
732 s
->block_padding
= ctx
->block_padding
;
733 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
734 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
736 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
737 s
->verify_callback
= ctx
->default_verify_callback
;
738 s
->generate_session_id
= ctx
->generate_session_id
;
740 s
->param
= X509_VERIFY_PARAM_new();
741 if (s
->param
== NULL
)
743 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
744 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
746 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
747 s
->max_send_fragment
= ctx
->max_send_fragment
;
748 s
->split_send_fragment
= ctx
->split_send_fragment
;
749 s
->max_pipelines
= ctx
->max_pipelines
;
750 if (s
->max_pipelines
> 1)
751 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
752 if (ctx
->default_read_buf_len
> 0)
753 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
758 s
->ext
.debug_arg
= NULL
;
759 s
->ext
.ticket_expected
= 0;
760 s
->ext
.status_type
= ctx
->ext
.status_type
;
761 s
->ext
.status_expected
= 0;
762 s
->ext
.ocsp
.ids
= NULL
;
763 s
->ext
.ocsp
.exts
= NULL
;
764 s
->ext
.ocsp
.resp
= NULL
;
765 s
->ext
.ocsp
.resp_len
= 0;
767 s
->session_ctx
= ctx
;
768 #ifndef OPENSSL_NO_EC
769 if (ctx
->ext
.ecpointformats
) {
770 s
->ext
.ecpointformats
=
771 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
772 ctx
->ext
.ecpointformats_len
);
773 if (!s
->ext
.ecpointformats
)
775 s
->ext
.ecpointformats_len
=
776 ctx
->ext
.ecpointformats_len
;
778 if (ctx
->ext
.supportedgroups
) {
779 s
->ext
.supportedgroups
=
780 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
781 ctx
->ext
.supportedgroups_len
782 * sizeof(*ctx
->ext
.supportedgroups
));
783 if (!s
->ext
.supportedgroups
)
785 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
788 #ifndef OPENSSL_NO_NEXTPROTONEG
792 if (s
->ctx
->ext
.alpn
) {
793 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
794 if (s
->ext
.alpn
== NULL
)
796 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
797 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
800 s
->verified_chain
= NULL
;
801 s
->verify_result
= X509_V_OK
;
803 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
804 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
806 s
->method
= ctx
->method
;
808 s
->key_update
= SSL_KEY_UPDATE_NONE
;
810 if (!s
->method
->ssl_new(s
))
813 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
818 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
821 #ifndef OPENSSL_NO_PSK
822 s
->psk_client_callback
= ctx
->psk_client_callback
;
823 s
->psk_server_callback
= ctx
->psk_server_callback
;
825 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
826 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
830 #ifndef OPENSSL_NO_CT
831 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
832 ctx
->ct_validation_callback_arg
))
839 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
843 int SSL_is_dtls(const SSL
*s
)
845 return SSL_IS_DTLS(s
) ? 1 : 0;
848 int SSL_up_ref(SSL
*s
)
852 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
855 REF_PRINT_COUNT("SSL", s
);
856 REF_ASSERT_ISNT(i
< 2);
857 return ((i
> 1) ? 1 : 0);
860 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
861 unsigned int sid_ctx_len
)
863 if (sid_ctx_len
> sizeof(ctx
->sid_ctx
)) {
864 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
865 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
868 ctx
->sid_ctx_length
= sid_ctx_len
;
869 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
874 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
875 unsigned int sid_ctx_len
)
877 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
878 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
879 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
882 ssl
->sid_ctx_length
= sid_ctx_len
;
883 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
888 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
890 CRYPTO_THREAD_write_lock(ctx
->lock
);
891 ctx
->generate_session_id
= cb
;
892 CRYPTO_THREAD_unlock(ctx
->lock
);
896 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
898 CRYPTO_THREAD_write_lock(ssl
->lock
);
899 ssl
->generate_session_id
= cb
;
900 CRYPTO_THREAD_unlock(ssl
->lock
);
904 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
908 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
909 * we can "construct" a session to give us the desired check - i.e. to
910 * find if there's a session in the hash table that would conflict with
911 * any new session built out of this id/id_len and the ssl_version in use
916 if (id_len
> sizeof(r
.session_id
))
919 r
.ssl_version
= ssl
->version
;
920 r
.session_id_length
= id_len
;
921 memcpy(r
.session_id
, id
, id_len
);
923 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
924 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
925 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
929 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
931 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
934 int SSL_set_purpose(SSL
*s
, int purpose
)
936 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
939 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
941 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
944 int SSL_set_trust(SSL
*s
, int trust
)
946 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
949 int SSL_set1_host(SSL
*s
, const char *hostname
)
951 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
954 int SSL_add1_host(SSL
*s
, const char *hostname
)
956 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
959 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
961 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
964 const char *SSL_get0_peername(SSL
*s
)
966 return X509_VERIFY_PARAM_get0_peername(s
->param
);
969 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
971 return dane_ctx_enable(&ctx
->dane
);
974 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
976 unsigned long orig
= ctx
->dane
.flags
;
978 ctx
->dane
.flags
|= flags
;
982 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
984 unsigned long orig
= ctx
->dane
.flags
;
986 ctx
->dane
.flags
&= ~flags
;
990 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
992 SSL_DANE
*dane
= &s
->dane
;
994 if (s
->ctx
->dane
.mdmax
== 0) {
995 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
998 if (dane
->trecs
!= NULL
) {
999 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1004 * Default SNI name. This rejects empty names, while set1_host below
1005 * accepts them and disables host name checks. To avoid side-effects with
1006 * invalid input, set the SNI name first.
1008 if (s
->ext
.hostname
== NULL
) {
1009 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1010 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1015 /* Primary RFC6125 reference identifier */
1016 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1017 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1023 dane
->dctx
= &s
->ctx
->dane
;
1024 dane
->trecs
= sk_danetls_record_new_null();
1026 if (dane
->trecs
== NULL
) {
1027 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1033 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1035 unsigned long orig
= ssl
->dane
.flags
;
1037 ssl
->dane
.flags
|= flags
;
1041 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1043 unsigned long orig
= ssl
->dane
.flags
;
1045 ssl
->dane
.flags
&= ~flags
;
1049 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1051 SSL_DANE
*dane
= &s
->dane
;
1053 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1057 *mcert
= dane
->mcert
;
1059 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1064 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1065 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1067 SSL_DANE
*dane
= &s
->dane
;
1069 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1073 *usage
= dane
->mtlsa
->usage
;
1075 *selector
= dane
->mtlsa
->selector
;
1077 *mtype
= dane
->mtlsa
->mtype
;
1079 *data
= dane
->mtlsa
->data
;
1081 *dlen
= dane
->mtlsa
->dlen
;
1086 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1091 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1092 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1094 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1097 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1100 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1103 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1105 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1108 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1110 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1113 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1118 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1123 void SSL_certs_clear(SSL
*s
)
1125 ssl_cert_clear_certs(s
->cert
);
1128 void SSL_free(SSL
*s
)
1135 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1136 REF_PRINT_COUNT("SSL", s
);
1139 REF_ASSERT_ISNT(i
< 0);
1141 X509_VERIFY_PARAM_free(s
->param
);
1142 dane_final(&s
->dane
);
1143 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1145 /* Ignore return value */
1146 ssl_free_wbio_buffer(s
);
1148 BIO_free_all(s
->wbio
);
1149 BIO_free_all(s
->rbio
);
1151 BUF_MEM_free(s
->init_buf
);
1153 /* add extra stuff */
1154 sk_SSL_CIPHER_free(s
->cipher_list
);
1155 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1157 /* Make the next call work :-) */
1158 if (s
->session
!= NULL
) {
1159 ssl_clear_bad_session(s
);
1160 SSL_SESSION_free(s
->session
);
1162 SSL_SESSION_free(s
->psksession
);
1163 OPENSSL_free(s
->psksession_id
);
1167 ssl_cert_free(s
->cert
);
1168 /* Free up if allocated */
1170 OPENSSL_free(s
->ext
.hostname
);
1171 SSL_CTX_free(s
->session_ctx
);
1172 #ifndef OPENSSL_NO_EC
1173 OPENSSL_free(s
->ext
.ecpointformats
);
1174 OPENSSL_free(s
->ext
.supportedgroups
);
1175 #endif /* OPENSSL_NO_EC */
1176 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1177 #ifndef OPENSSL_NO_OCSP
1178 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1180 #ifndef OPENSSL_NO_CT
1181 SCT_LIST_free(s
->scts
);
1182 OPENSSL_free(s
->ext
.scts
);
1184 OPENSSL_free(s
->ext
.ocsp
.resp
);
1185 OPENSSL_free(s
->ext
.alpn
);
1186 OPENSSL_free(s
->ext
.tls13_cookie
);
1187 OPENSSL_free(s
->clienthello
);
1189 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1191 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1193 if (s
->method
!= NULL
)
1194 s
->method
->ssl_free(s
);
1196 RECORD_LAYER_release(&s
->rlayer
);
1198 SSL_CTX_free(s
->ctx
);
1200 ASYNC_WAIT_CTX_free(s
->waitctx
);
1202 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1203 OPENSSL_free(s
->ext
.npn
);
1206 #ifndef OPENSSL_NO_SRTP
1207 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1210 RAND_DRBG_free(s
->drbg
);
1211 CRYPTO_THREAD_lock_free(s
->lock
);
1216 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1218 BIO_free_all(s
->rbio
);
1222 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1225 * If the output buffering BIO is still in place, remove it
1227 if (s
->bbio
!= NULL
)
1228 s
->wbio
= BIO_pop(s
->wbio
);
1230 BIO_free_all(s
->wbio
);
1233 /* Re-attach |bbio| to the new |wbio|. */
1234 if (s
->bbio
!= NULL
)
1235 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1238 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1241 * For historical reasons, this function has many different cases in
1242 * ownership handling.
1245 /* If nothing has changed, do nothing */
1246 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1250 * If the two arguments are equal then one fewer reference is granted by the
1251 * caller than we want to take
1253 if (rbio
!= NULL
&& rbio
== wbio
)
1257 * If only the wbio is changed only adopt one reference.
1259 if (rbio
== SSL_get_rbio(s
)) {
1260 SSL_set0_wbio(s
, wbio
);
1264 * There is an asymmetry here for historical reasons. If only the rbio is
1265 * changed AND the rbio and wbio were originally different, then we only
1266 * adopt one reference.
1268 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1269 SSL_set0_rbio(s
, rbio
);
1273 /* Otherwise, adopt both references. */
1274 SSL_set0_rbio(s
, rbio
);
1275 SSL_set0_wbio(s
, wbio
);
1278 BIO
*SSL_get_rbio(const SSL
*s
)
1283 BIO
*SSL_get_wbio(const SSL
*s
)
1285 if (s
->bbio
!= NULL
) {
1287 * If |bbio| is active, the true caller-configured BIO is its
1290 return BIO_next(s
->bbio
);
1295 int SSL_get_fd(const SSL
*s
)
1297 return SSL_get_rfd(s
);
1300 int SSL_get_rfd(const SSL
*s
)
1305 b
= SSL_get_rbio(s
);
1306 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1308 BIO_get_fd(r
, &ret
);
1312 int SSL_get_wfd(const SSL
*s
)
1317 b
= SSL_get_wbio(s
);
1318 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1320 BIO_get_fd(r
, &ret
);
1324 #ifndef OPENSSL_NO_SOCK
1325 int SSL_set_fd(SSL
*s
, int fd
)
1330 bio
= BIO_new(BIO_s_socket());
1333 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1336 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1337 SSL_set_bio(s
, bio
, bio
);
1343 int SSL_set_wfd(SSL
*s
, int fd
)
1345 BIO
*rbio
= SSL_get_rbio(s
);
1347 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1348 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1349 BIO
*bio
= BIO_new(BIO_s_socket());
1352 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1355 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1356 SSL_set0_wbio(s
, bio
);
1359 SSL_set0_wbio(s
, rbio
);
1364 int SSL_set_rfd(SSL
*s
, int fd
)
1366 BIO
*wbio
= SSL_get_wbio(s
);
1368 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1369 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1370 BIO
*bio
= BIO_new(BIO_s_socket());
1373 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1376 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1377 SSL_set0_rbio(s
, bio
);
1380 SSL_set0_rbio(s
, wbio
);
1387 /* return length of latest Finished message we sent, copy to 'buf' */
1388 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1392 if (s
->s3
!= NULL
) {
1393 ret
= s
->s3
->tmp
.finish_md_len
;
1396 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1401 /* return length of latest Finished message we expected, copy to 'buf' */
1402 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1406 if (s
->s3
!= NULL
) {
1407 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1410 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1415 int SSL_get_verify_mode(const SSL
*s
)
1417 return s
->verify_mode
;
1420 int SSL_get_verify_depth(const SSL
*s
)
1422 return X509_VERIFY_PARAM_get_depth(s
->param
);
1425 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1426 return s
->verify_callback
;
1429 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1431 return ctx
->verify_mode
;
1434 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1436 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1439 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1440 return ctx
->default_verify_callback
;
1443 void SSL_set_verify(SSL
*s
, int mode
,
1444 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1446 s
->verify_mode
= mode
;
1447 if (callback
!= NULL
)
1448 s
->verify_callback
= callback
;
1451 void SSL_set_verify_depth(SSL
*s
, int depth
)
1453 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1456 void SSL_set_read_ahead(SSL
*s
, int yes
)
1458 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1461 int SSL_get_read_ahead(const SSL
*s
)
1463 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1466 int SSL_pending(const SSL
*s
)
1468 size_t pending
= s
->method
->ssl_pending(s
);
1471 * SSL_pending cannot work properly if read-ahead is enabled
1472 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1473 * impossible to fix since SSL_pending cannot report errors that may be
1474 * observed while scanning the new data. (Note that SSL_pending() is
1475 * often used as a boolean value, so we'd better not return -1.)
1477 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1478 * we just return INT_MAX.
1480 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1483 int SSL_has_pending(const SSL
*s
)
1486 * Similar to SSL_pending() but returns a 1 to indicate that we have
1487 * unprocessed data available or 0 otherwise (as opposed to the number of
1488 * bytes available). Unlike SSL_pending() this will take into account
1489 * read_ahead data. A 1 return simply indicates that we have unprocessed
1490 * data. That data may not result in any application data, or we may fail
1491 * to parse the records for some reason.
1493 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1496 return RECORD_LAYER_read_pending(&s
->rlayer
);
1499 X509
*SSL_get_peer_certificate(const SSL
*s
)
1503 if ((s
== NULL
) || (s
->session
== NULL
))
1506 r
= s
->session
->peer
;
1516 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1520 if ((s
== NULL
) || (s
->session
== NULL
))
1523 r
= s
->session
->peer_chain
;
1526 * If we are a client, cert_chain includes the peer's own certificate; if
1527 * we are a server, it does not.
1534 * Now in theory, since the calling process own 't' it should be safe to
1535 * modify. We need to be able to read f without being hassled
1537 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1540 /* Do we need to to SSL locking? */
1541 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1546 * what if we are setup for one protocol version but want to talk another
1548 if (t
->method
!= f
->method
) {
1549 t
->method
->ssl_free(t
);
1550 t
->method
= f
->method
;
1551 if (t
->method
->ssl_new(t
) == 0)
1555 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1556 ssl_cert_free(t
->cert
);
1558 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1565 /* Fix this so it checks all the valid key/cert options */
1566 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1568 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1569 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1572 if (ctx
->cert
->key
->privatekey
== NULL
) {
1573 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1576 return X509_check_private_key
1577 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1580 /* Fix this function so that it takes an optional type parameter */
1581 int SSL_check_private_key(const SSL
*ssl
)
1584 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1587 if (ssl
->cert
->key
->x509
== NULL
) {
1588 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1591 if (ssl
->cert
->key
->privatekey
== NULL
) {
1592 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1595 return X509_check_private_key(ssl
->cert
->key
->x509
,
1596 ssl
->cert
->key
->privatekey
);
1599 int SSL_waiting_for_async(SSL
*s
)
1607 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1609 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1613 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1616 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1617 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1619 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1623 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1627 int SSL_accept(SSL
*s
)
1629 if (s
->handshake_func
== NULL
) {
1630 /* Not properly initialized yet */
1631 SSL_set_accept_state(s
);
1634 return SSL_do_handshake(s
);
1637 int SSL_connect(SSL
*s
)
1639 if (s
->handshake_func
== NULL
) {
1640 /* Not properly initialized yet */
1641 SSL_set_connect_state(s
);
1644 return SSL_do_handshake(s
);
1647 long SSL_get_default_timeout(const SSL
*s
)
1649 return s
->method
->get_timeout();
1652 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1653 int (*func
) (void *))
1656 if (s
->waitctx
== NULL
) {
1657 s
->waitctx
= ASYNC_WAIT_CTX_new();
1658 if (s
->waitctx
== NULL
)
1661 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1662 sizeof(struct ssl_async_args
))) {
1664 s
->rwstate
= SSL_NOTHING
;
1665 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1668 s
->rwstate
= SSL_ASYNC_PAUSED
;
1671 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1677 s
->rwstate
= SSL_NOTHING
;
1678 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1679 /* Shouldn't happen */
1684 static int ssl_io_intern(void *vargs
)
1686 struct ssl_async_args
*args
;
1691 args
= (struct ssl_async_args
*)vargs
;
1695 switch (args
->type
) {
1697 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1699 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1701 return args
->f
.func_other(s
);
1706 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1708 if (s
->handshake_func
== NULL
) {
1709 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1713 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1714 s
->rwstate
= SSL_NOTHING
;
1718 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1719 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1720 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1724 * If we are a client and haven't received the ServerHello etc then we
1727 ossl_statem_check_finish_init(s
, 0);
1729 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1730 struct ssl_async_args args
;
1736 args
.type
= READFUNC
;
1737 args
.f
.func_read
= s
->method
->ssl_read
;
1739 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1740 *readbytes
= s
->asyncrw
;
1743 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1747 int SSL_read(SSL
*s
, void *buf
, int num
)
1753 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1757 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1760 * The cast is safe here because ret should be <= INT_MAX because num is
1764 ret
= (int)readbytes
;
1769 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1771 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1778 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1783 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1784 return SSL_READ_EARLY_DATA_ERROR
;
1787 switch (s
->early_data_state
) {
1788 case SSL_EARLY_DATA_NONE
:
1789 if (!SSL_in_before(s
)) {
1790 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1791 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1792 return SSL_READ_EARLY_DATA_ERROR
;
1796 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1797 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1798 ret
= SSL_accept(s
);
1801 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1802 return SSL_READ_EARLY_DATA_ERROR
;
1806 case SSL_EARLY_DATA_READ_RETRY
:
1807 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1808 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1809 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1811 * State machine will update early_data_state to
1812 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1815 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1816 != SSL_EARLY_DATA_FINISHED_READING
)) {
1817 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1818 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1819 : SSL_READ_EARLY_DATA_ERROR
;
1822 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1825 return SSL_READ_EARLY_DATA_FINISH
;
1828 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1829 return SSL_READ_EARLY_DATA_ERROR
;
1833 int SSL_get_early_data_status(const SSL
*s
)
1835 return s
->ext
.early_data
;
1838 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1840 if (s
->handshake_func
== NULL
) {
1841 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1845 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1848 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1849 struct ssl_async_args args
;
1855 args
.type
= READFUNC
;
1856 args
.f
.func_read
= s
->method
->ssl_peek
;
1858 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1859 *readbytes
= s
->asyncrw
;
1862 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1866 int SSL_peek(SSL
*s
, void *buf
, int num
)
1872 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1876 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1879 * The cast is safe here because ret should be <= INT_MAX because num is
1883 ret
= (int)readbytes
;
1889 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1891 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1898 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1900 if (s
->handshake_func
== NULL
) {
1901 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1905 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1906 s
->rwstate
= SSL_NOTHING
;
1907 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1911 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1912 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1913 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1914 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1917 /* If we are a client and haven't sent the Finished we better do that */
1918 ossl_statem_check_finish_init(s
, 1);
1920 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1922 struct ssl_async_args args
;
1925 args
.buf
= (void *)buf
;
1927 args
.type
= WRITEFUNC
;
1928 args
.f
.func_write
= s
->method
->ssl_write
;
1930 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1931 *written
= s
->asyncrw
;
1934 return s
->method
->ssl_write(s
, buf
, num
, written
);
1938 int SSL_write(SSL
*s
, const void *buf
, int num
)
1944 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1948 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1951 * The cast is safe here because ret should be <= INT_MAX because num is
1960 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1962 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1969 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1971 int ret
, early_data_state
;
1973 switch (s
->early_data_state
) {
1974 case SSL_EARLY_DATA_NONE
:
1976 || !SSL_in_before(s
)
1977 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1978 && (s
->psk_use_session_cb
== NULL
))) {
1979 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1980 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1985 case SSL_EARLY_DATA_CONNECT_RETRY
:
1986 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1987 ret
= SSL_connect(s
);
1990 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1995 case SSL_EARLY_DATA_WRITE_RETRY
:
1996 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1997 ret
= SSL_write_ex(s
, buf
, num
, written
);
1998 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2001 case SSL_EARLY_DATA_FINISHED_READING
:
2002 case SSL_EARLY_DATA_READ_RETRY
:
2003 early_data_state
= s
->early_data_state
;
2004 /* We are a server writing to an unauthenticated client */
2005 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2006 ret
= SSL_write_ex(s
, buf
, num
, written
);
2007 s
->early_data_state
= early_data_state
;
2011 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2016 int SSL_shutdown(SSL
*s
)
2019 * Note that this function behaves differently from what one might
2020 * expect. Return values are 0 for no success (yet), 1 for success; but
2021 * calling it once is usually not enough, even if blocking I/O is used
2022 * (see ssl3_shutdown).
2025 if (s
->handshake_func
== NULL
) {
2026 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2030 if (!SSL_in_init(s
)) {
2031 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2032 struct ssl_async_args args
;
2035 args
.type
= OTHERFUNC
;
2036 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2038 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2040 return s
->method
->ssl_shutdown(s
);
2043 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2048 int SSL_key_update(SSL
*s
, int updatetype
)
2051 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2052 * negotiated, and that it is appropriate to call SSL_key_update() instead
2053 * of SSL_renegotiate().
2055 if (!SSL_IS_TLS13(s
)) {
2056 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2060 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2061 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2062 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2066 if (!SSL_is_init_finished(s
)) {
2067 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2071 ossl_statem_set_in_init(s
, 1);
2072 s
->key_update
= updatetype
;
2076 int SSL_get_key_update_type(SSL
*s
)
2078 return s
->key_update
;
2081 int SSL_renegotiate(SSL
*s
)
2083 if (SSL_IS_TLS13(s
)) {
2084 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2088 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2089 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2096 return s
->method
->ssl_renegotiate(s
);
2099 int SSL_renegotiate_abbreviated(SSL
*s
)
2101 if (SSL_IS_TLS13(s
)) {
2102 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2106 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2107 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2114 return s
->method
->ssl_renegotiate(s
);
2117 int SSL_renegotiate_pending(SSL
*s
)
2120 * becomes true when negotiation is requested; false again once a
2121 * handshake has finished
2123 return (s
->renegotiate
!= 0);
2126 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2131 case SSL_CTRL_GET_READ_AHEAD
:
2132 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2133 case SSL_CTRL_SET_READ_AHEAD
:
2134 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2135 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2138 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2139 s
->msg_callback_arg
= parg
;
2143 return (s
->mode
|= larg
);
2144 case SSL_CTRL_CLEAR_MODE
:
2145 return (s
->mode
&= ~larg
);
2146 case SSL_CTRL_GET_MAX_CERT_LIST
:
2147 return (long)s
->max_cert_list
;
2148 case SSL_CTRL_SET_MAX_CERT_LIST
:
2151 l
= (long)s
->max_cert_list
;
2152 s
->max_cert_list
= (size_t)larg
;
2154 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2155 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2157 s
->max_send_fragment
= larg
;
2158 if (s
->max_send_fragment
< s
->split_send_fragment
)
2159 s
->split_send_fragment
= s
->max_send_fragment
;
2161 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2162 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2164 s
->split_send_fragment
= larg
;
2166 case SSL_CTRL_SET_MAX_PIPELINES
:
2167 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2169 s
->max_pipelines
= larg
;
2171 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2173 case SSL_CTRL_GET_RI_SUPPORT
:
2175 return s
->s3
->send_connection_binding
;
2178 case SSL_CTRL_CERT_FLAGS
:
2179 return (s
->cert
->cert_flags
|= larg
);
2180 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2181 return (s
->cert
->cert_flags
&= ~larg
);
2183 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2185 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2187 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2188 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2190 return TLS_CIPHER_LEN
;
2192 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2193 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2195 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2199 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2200 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2201 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2202 &s
->min_proto_version
);
2203 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2204 return s
->min_proto_version
;
2205 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2206 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2207 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2208 &s
->max_proto_version
);
2209 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2210 return s
->max_proto_version
;
2212 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2216 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2219 case SSL_CTRL_SET_MSG_CALLBACK
:
2220 s
->msg_callback
= (void (*)
2221 (int write_p
, int version
, int content_type
,
2222 const void *buf
, size_t len
, SSL
*ssl
,
2227 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2231 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2233 return ctx
->sessions
;
2236 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2240 /* For some cases with ctx == NULL perform syntax checks */
2243 #ifndef OPENSSL_NO_EC
2244 case SSL_CTRL_SET_GROUPS_LIST
:
2245 return tls1_set_groups_list(NULL
, NULL
, parg
);
2247 case SSL_CTRL_SET_SIGALGS_LIST
:
2248 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2249 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2256 case SSL_CTRL_GET_READ_AHEAD
:
2257 return ctx
->read_ahead
;
2258 case SSL_CTRL_SET_READ_AHEAD
:
2259 l
= ctx
->read_ahead
;
2260 ctx
->read_ahead
= larg
;
2263 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2264 ctx
->msg_callback_arg
= parg
;
2267 case SSL_CTRL_GET_MAX_CERT_LIST
:
2268 return (long)ctx
->max_cert_list
;
2269 case SSL_CTRL_SET_MAX_CERT_LIST
:
2272 l
= (long)ctx
->max_cert_list
;
2273 ctx
->max_cert_list
= (size_t)larg
;
2276 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2279 l
= (long)ctx
->session_cache_size
;
2280 ctx
->session_cache_size
= (size_t)larg
;
2282 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2283 return (long)ctx
->session_cache_size
;
2284 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2285 l
= ctx
->session_cache_mode
;
2286 ctx
->session_cache_mode
= larg
;
2288 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2289 return ctx
->session_cache_mode
;
2291 case SSL_CTRL_SESS_NUMBER
:
2292 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2293 case SSL_CTRL_SESS_CONNECT
:
2294 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect
, &i
, ctx
->lock
)
2296 case SSL_CTRL_SESS_CONNECT_GOOD
:
2297 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_good
, &i
, ctx
->lock
)
2299 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2300 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_renegotiate
, &i
,
2303 case SSL_CTRL_SESS_ACCEPT
:
2304 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept
, &i
, ctx
->lock
)
2306 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2307 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_good
, &i
, ctx
->lock
)
2309 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2310 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_renegotiate
, &i
,
2313 case SSL_CTRL_SESS_HIT
:
2314 return CRYPTO_atomic_read(&ctx
->stats
.sess_hit
, &i
, ctx
->lock
)
2316 case SSL_CTRL_SESS_CB_HIT
:
2317 return CRYPTO_atomic_read(&ctx
->stats
.sess_cb_hit
, &i
, ctx
->lock
)
2319 case SSL_CTRL_SESS_MISSES
:
2320 return CRYPTO_atomic_read(&ctx
->stats
.sess_miss
, &i
, ctx
->lock
)
2322 case SSL_CTRL_SESS_TIMEOUTS
:
2323 return CRYPTO_atomic_read(&ctx
->stats
.sess_timeout
, &i
, ctx
->lock
)
2325 case SSL_CTRL_SESS_CACHE_FULL
:
2326 return CRYPTO_atomic_read(&ctx
->stats
.sess_cache_full
, &i
, ctx
->lock
)
2329 return (ctx
->mode
|= larg
);
2330 case SSL_CTRL_CLEAR_MODE
:
2331 return (ctx
->mode
&= ~larg
);
2332 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2333 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2335 ctx
->max_send_fragment
= larg
;
2336 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2337 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2339 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2340 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2342 ctx
->split_send_fragment
= larg
;
2344 case SSL_CTRL_SET_MAX_PIPELINES
:
2345 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2347 ctx
->max_pipelines
= larg
;
2349 case SSL_CTRL_CERT_FLAGS
:
2350 return (ctx
->cert
->cert_flags
|= larg
);
2351 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2352 return (ctx
->cert
->cert_flags
&= ~larg
);
2353 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2354 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2355 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2356 &ctx
->min_proto_version
);
2357 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2358 return ctx
->min_proto_version
;
2359 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2360 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2361 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2362 &ctx
->max_proto_version
);
2363 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2364 return ctx
->max_proto_version
;
2366 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2370 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2373 case SSL_CTRL_SET_MSG_CALLBACK
:
2374 ctx
->msg_callback
= (void (*)
2375 (int write_p
, int version
, int content_type
,
2376 const void *buf
, size_t len
, SSL
*ssl
,
2381 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2385 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2394 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2395 const SSL_CIPHER
*const *bp
)
2397 if ((*ap
)->id
> (*bp
)->id
)
2399 if ((*ap
)->id
< (*bp
)->id
)
2404 /** return a STACK of the ciphers available for the SSL and in order of
2406 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2409 if (s
->cipher_list
!= NULL
) {
2410 return s
->cipher_list
;
2411 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2412 return s
->ctx
->cipher_list
;
2418 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2420 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2422 return s
->session
->ciphers
;
2425 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2427 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2429 ciphers
= SSL_get_ciphers(s
);
2432 ssl_set_client_disabled(s
);
2433 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2434 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2435 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2437 sk
= sk_SSL_CIPHER_new_null();
2440 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2441 sk_SSL_CIPHER_free(sk
);
2449 /** return a STACK of the ciphers available for the SSL and in order of
2451 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2454 if (s
->cipher_list_by_id
!= NULL
) {
2455 return s
->cipher_list_by_id
;
2456 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2457 return s
->ctx
->cipher_list_by_id
;
2463 /** The old interface to get the same thing as SSL_get_ciphers() */
2464 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2466 const SSL_CIPHER
*c
;
2467 STACK_OF(SSL_CIPHER
) *sk
;
2471 sk
= SSL_get_ciphers(s
);
2472 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2474 c
= sk_SSL_CIPHER_value(sk
, n
);
2480 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2482 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2485 return ctx
->cipher_list
;
2489 /** specify the ciphers to be used by default by the SSL_CTX */
2490 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2492 STACK_OF(SSL_CIPHER
) *sk
;
2494 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2495 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2497 * ssl_create_cipher_list may return an empty stack if it was unable to
2498 * find a cipher matching the given rule string (for example if the rule
2499 * string specifies a cipher which has been disabled). This is not an
2500 * error as far as ssl_create_cipher_list is concerned, and hence
2501 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2505 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2506 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2512 /** specify the ciphers to be used by the SSL */
2513 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2515 STACK_OF(SSL_CIPHER
) *sk
;
2517 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2518 &s
->cipher_list_by_id
, str
, s
->cert
);
2519 /* see comment in SSL_CTX_set_cipher_list */
2522 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2523 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2529 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2532 STACK_OF(SSL_CIPHER
) *sk
;
2533 const SSL_CIPHER
*c
;
2536 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2540 sk
= s
->session
->ciphers
;
2542 if (sk_SSL_CIPHER_num(sk
) == 0)
2545 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2548 c
= sk_SSL_CIPHER_value(sk
, i
);
2549 n
= strlen(c
->name
);
2565 /** return a servername extension value if provided in Client Hello, or NULL.
2566 * So far, only host_name types are defined (RFC 3546).
2569 const char *SSL_get_servername(const SSL
*s
, const int type
)
2571 if (type
!= TLSEXT_NAMETYPE_host_name
)
2574 return s
->session
&& !s
->ext
.hostname
?
2575 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2578 int SSL_get_servername_type(const SSL
*s
)
2581 && (!s
->ext
.hostname
? s
->session
->
2582 ext
.hostname
: s
->ext
.hostname
))
2583 return TLSEXT_NAMETYPE_host_name
;
2588 * SSL_select_next_proto implements the standard protocol selection. It is
2589 * expected that this function is called from the callback set by
2590 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2591 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2592 * not included in the length. A byte string of length 0 is invalid. No byte
2593 * string may be truncated. The current, but experimental algorithm for
2594 * selecting the protocol is: 1) If the server doesn't support NPN then this
2595 * is indicated to the callback. In this case, the client application has to
2596 * abort the connection or have a default application level protocol. 2) If
2597 * the server supports NPN, but advertises an empty list then the client
2598 * selects the first protocol in its list, but indicates via the API that this
2599 * fallback case was enacted. 3) Otherwise, the client finds the first
2600 * protocol in the server's list that it supports and selects this protocol.
2601 * This is because it's assumed that the server has better information about
2602 * which protocol a client should use. 4) If the client doesn't support any
2603 * of the server's advertised protocols, then this is treated the same as
2604 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2605 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2607 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2608 const unsigned char *server
,
2609 unsigned int server_len
,
2610 const unsigned char *client
, unsigned int client_len
)
2613 const unsigned char *result
;
2614 int status
= OPENSSL_NPN_UNSUPPORTED
;
2617 * For each protocol in server preference order, see if we support it.
2619 for (i
= 0; i
< server_len
;) {
2620 for (j
= 0; j
< client_len
;) {
2621 if (server
[i
] == client
[j
] &&
2622 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2623 /* We found a match */
2624 result
= &server
[i
];
2625 status
= OPENSSL_NPN_NEGOTIATED
;
2635 /* There's no overlap between our protocols and the server's list. */
2637 status
= OPENSSL_NPN_NO_OVERLAP
;
2640 *out
= (unsigned char *)result
+ 1;
2641 *outlen
= result
[0];
2645 #ifndef OPENSSL_NO_NEXTPROTONEG
2647 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2648 * client's requested protocol for this connection and returns 0. If the
2649 * client didn't request any protocol, then *data is set to NULL. Note that
2650 * the client can request any protocol it chooses. The value returned from
2651 * this function need not be a member of the list of supported protocols
2652 * provided by the callback.
2654 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2661 *len
= (unsigned int)s
->ext
.npn_len
;
2666 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2667 * a TLS server needs a list of supported protocols for Next Protocol
2668 * Negotiation. The returned list must be in wire format. The list is
2669 * returned by setting |out| to point to it and |outlen| to its length. This
2670 * memory will not be modified, but one should assume that the SSL* keeps a
2671 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2672 * wishes to advertise. Otherwise, no such extension will be included in the
2675 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2676 SSL_CTX_npn_advertised_cb_func cb
,
2679 ctx
->ext
.npn_advertised_cb
= cb
;
2680 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2684 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2685 * client needs to select a protocol from the server's provided list. |out|
2686 * must be set to point to the selected protocol (which may be within |in|).
2687 * The length of the protocol name must be written into |outlen|. The
2688 * server's advertised protocols are provided in |in| and |inlen|. The
2689 * callback can assume that |in| is syntactically valid. The client must
2690 * select a protocol. It is fatal to the connection if this callback returns
2691 * a value other than SSL_TLSEXT_ERR_OK.
2693 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2694 SSL_CTX_npn_select_cb_func cb
,
2697 ctx
->ext
.npn_select_cb
= cb
;
2698 ctx
->ext
.npn_select_cb_arg
= arg
;
2703 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2704 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2705 * length-prefixed strings). Returns 0 on success.
2707 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2708 unsigned int protos_len
)
2710 OPENSSL_free(ctx
->ext
.alpn
);
2711 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2712 if (ctx
->ext
.alpn
== NULL
) {
2713 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2716 ctx
->ext
.alpn_len
= protos_len
;
2722 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2723 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2724 * length-prefixed strings). Returns 0 on success.
2726 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2727 unsigned int protos_len
)
2729 OPENSSL_free(ssl
->ext
.alpn
);
2730 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2731 if (ssl
->ext
.alpn
== NULL
) {
2732 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2735 ssl
->ext
.alpn_len
= protos_len
;
2741 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2742 * called during ClientHello processing in order to select an ALPN protocol
2743 * from the client's list of offered protocols.
2745 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2746 SSL_CTX_alpn_select_cb_func cb
,
2749 ctx
->ext
.alpn_select_cb
= cb
;
2750 ctx
->ext
.alpn_select_cb_arg
= arg
;
2754 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2755 * On return it sets |*data| to point to |*len| bytes of protocol name
2756 * (not including the leading length-prefix byte). If the server didn't
2757 * respond with a negotiated protocol then |*len| will be zero.
2759 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2764 *data
= ssl
->s3
->alpn_selected
;
2768 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2771 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2772 const char *label
, size_t llen
,
2773 const unsigned char *context
, size_t contextlen
,
2776 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2779 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2781 contextlen
, use_context
);
2784 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2786 const unsigned char *session_id
= a
->session_id
;
2788 unsigned char tmp_storage
[4];
2790 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2791 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2792 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2793 session_id
= tmp_storage
;
2797 ((unsigned long)session_id
[0]) |
2798 ((unsigned long)session_id
[1] << 8L) |
2799 ((unsigned long)session_id
[2] << 16L) |
2800 ((unsigned long)session_id
[3] << 24L);
2805 * NB: If this function (or indeed the hash function which uses a sort of
2806 * coarser function than this one) is changed, ensure
2807 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2808 * being able to construct an SSL_SESSION that will collide with any existing
2809 * session with a matching session ID.
2811 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2813 if (a
->ssl_version
!= b
->ssl_version
)
2815 if (a
->session_id_length
!= b
->session_id_length
)
2817 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
2821 * These wrapper functions should remain rather than redeclaring
2822 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2823 * variable. The reason is that the functions aren't static, they're exposed
2827 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2829 SSL_CTX
*ret
= NULL
;
2832 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2836 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2839 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2840 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2843 ret
= OPENSSL_zalloc(sizeof(*ret
));
2848 ret
->min_proto_version
= 0;
2849 ret
->max_proto_version
= 0;
2850 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2851 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2852 /* We take the system default. */
2853 ret
->session_timeout
= meth
->get_timeout();
2854 ret
->references
= 1;
2855 ret
->lock
= CRYPTO_THREAD_lock_new();
2856 if (ret
->lock
== NULL
) {
2857 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2861 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2862 ret
->verify_mode
= SSL_VERIFY_NONE
;
2863 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2866 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2867 if (ret
->sessions
== NULL
)
2869 ret
->cert_store
= X509_STORE_new();
2870 if (ret
->cert_store
== NULL
)
2872 #ifndef OPENSSL_NO_CT
2873 ret
->ctlog_store
= CTLOG_STORE_new();
2874 if (ret
->ctlog_store
== NULL
)
2877 if (!ssl_create_cipher_list(ret
->method
,
2878 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2879 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2880 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2881 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2885 ret
->param
= X509_VERIFY_PARAM_new();
2886 if (ret
->param
== NULL
)
2889 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2890 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2893 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2894 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2898 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2901 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2904 /* No compression for DTLS */
2905 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2906 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2908 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2909 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2911 /* Setup RFC5077 ticket keys */
2912 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2913 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2914 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2915 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2916 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2917 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2918 ret
->options
|= SSL_OP_NO_TICKET
;
2920 #ifndef OPENSSL_NO_SRP
2921 if (!SSL_CTX_SRP_CTX_init(ret
))
2924 #ifndef OPENSSL_NO_ENGINE
2925 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2926 # define eng_strx(x) #x
2927 # define eng_str(x) eng_strx(x)
2928 /* Use specific client engine automatically... ignore errors */
2931 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2934 ENGINE_load_builtin_engines();
2935 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2937 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2943 * Default is to connect to non-RI servers. When RI is more widely
2944 * deployed might change this.
2946 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2948 * Disable compression by default to prevent CRIME. Applications can
2949 * re-enable compression by configuring
2950 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2951 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
2952 * middlebox compatibility by default. This may be disabled by default in
2953 * a later OpenSSL version.
2955 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
2957 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2960 * Default max early data is a fully loaded single record. Could be split
2961 * across multiple records in practice
2963 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2967 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2973 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2977 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2980 REF_PRINT_COUNT("SSL_CTX", ctx
);
2981 REF_ASSERT_ISNT(i
< 2);
2982 return ((i
> 1) ? 1 : 0);
2985 void SSL_CTX_free(SSL_CTX
*a
)
2992 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2993 REF_PRINT_COUNT("SSL_CTX", a
);
2996 REF_ASSERT_ISNT(i
< 0);
2998 X509_VERIFY_PARAM_free(a
->param
);
2999 dane_ctx_final(&a
->dane
);
3002 * Free internal session cache. However: the remove_cb() may reference
3003 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3004 * after the sessions were flushed.
3005 * As the ex_data handling routines might also touch the session cache,
3006 * the most secure solution seems to be: empty (flush) the cache, then
3007 * free ex_data, then finally free the cache.
3008 * (See ticket [openssl.org #212].)
3010 if (a
->sessions
!= NULL
)
3011 SSL_CTX_flush_sessions(a
, 0);
3013 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3014 lh_SSL_SESSION_free(a
->sessions
);
3015 X509_STORE_free(a
->cert_store
);
3016 #ifndef OPENSSL_NO_CT
3017 CTLOG_STORE_free(a
->ctlog_store
);
3019 sk_SSL_CIPHER_free(a
->cipher_list
);
3020 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3021 ssl_cert_free(a
->cert
);
3022 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3023 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3024 a
->comp_methods
= NULL
;
3025 #ifndef OPENSSL_NO_SRTP
3026 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3028 #ifndef OPENSSL_NO_SRP
3029 SSL_CTX_SRP_CTX_free(a
);
3031 #ifndef OPENSSL_NO_ENGINE
3032 ENGINE_finish(a
->client_cert_engine
);
3035 #ifndef OPENSSL_NO_EC
3036 OPENSSL_free(a
->ext
.ecpointformats
);
3037 OPENSSL_free(a
->ext
.supportedgroups
);
3039 OPENSSL_free(a
->ext
.alpn
);
3041 CRYPTO_THREAD_lock_free(a
->lock
);
3046 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3048 ctx
->default_passwd_callback
= cb
;
3051 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3053 ctx
->default_passwd_callback_userdata
= u
;
3056 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3058 return ctx
->default_passwd_callback
;
3061 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3063 return ctx
->default_passwd_callback_userdata
;
3066 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3068 s
->default_passwd_callback
= cb
;
3071 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3073 s
->default_passwd_callback_userdata
= u
;
3076 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3078 return s
->default_passwd_callback
;
3081 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3083 return s
->default_passwd_callback_userdata
;
3086 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3087 int (*cb
) (X509_STORE_CTX
*, void *),
3090 ctx
->app_verify_callback
= cb
;
3091 ctx
->app_verify_arg
= arg
;
3094 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3095 int (*cb
) (int, X509_STORE_CTX
*))
3097 ctx
->verify_mode
= mode
;
3098 ctx
->default_verify_callback
= cb
;
3101 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3103 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3106 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3108 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3111 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3113 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3116 void ssl_set_masks(SSL
*s
)
3119 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3120 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3121 unsigned long mask_k
, mask_a
;
3122 #ifndef OPENSSL_NO_EC
3123 int have_ecc_cert
, ecdsa_ok
;
3128 #ifndef OPENSSL_NO_DH
3129 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3134 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3135 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3136 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3137 #ifndef OPENSSL_NO_EC
3138 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3144 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3145 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3148 #ifndef OPENSSL_NO_GOST
3149 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3150 mask_k
|= SSL_kGOST
;
3151 mask_a
|= SSL_aGOST12
;
3153 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3154 mask_k
|= SSL_kGOST
;
3155 mask_a
|= SSL_aGOST12
;
3157 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3158 mask_k
|= SSL_kGOST
;
3159 mask_a
|= SSL_aGOST01
;
3170 * If we only have an RSA-PSS certificate allow RSA authentication
3171 * if TLS 1.2 and peer supports it.
3174 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3175 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3176 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3183 mask_a
|= SSL_aNULL
;
3186 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3187 * depending on the key usage extension.
3189 #ifndef OPENSSL_NO_EC
3190 if (have_ecc_cert
) {
3192 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3193 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3194 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3197 mask_a
|= SSL_aECDSA
;
3199 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3200 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3201 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3202 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3203 mask_a
|= SSL_aECDSA
;
3206 #ifndef OPENSSL_NO_EC
3207 mask_k
|= SSL_kECDHE
;
3210 #ifndef OPENSSL_NO_PSK
3213 if (mask_k
& SSL_kRSA
)
3214 mask_k
|= SSL_kRSAPSK
;
3215 if (mask_k
& SSL_kDHE
)
3216 mask_k
|= SSL_kDHEPSK
;
3217 if (mask_k
& SSL_kECDHE
)
3218 mask_k
|= SSL_kECDHEPSK
;
3221 s
->s3
->tmp
.mask_k
= mask_k
;
3222 s
->s3
->tmp
.mask_a
= mask_a
;
3225 #ifndef OPENSSL_NO_EC
3227 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3229 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3230 /* key usage, if present, must allow signing */
3231 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3232 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3233 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3237 return 1; /* all checks are ok */
3242 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3243 size_t *serverinfo_length
)
3245 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3246 *serverinfo_length
= 0;
3248 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3251 *serverinfo
= cpk
->serverinfo
;
3252 *serverinfo_length
= cpk
->serverinfo_length
;
3256 void ssl_update_cache(SSL
*s
, int mode
)
3261 * If the session_id_length is 0, we are not supposed to cache it, and it
3262 * would be rather hard to do anyway :-)
3264 if (s
->session
->session_id_length
== 0)
3267 i
= s
->session_ctx
->session_cache_mode
;
3269 && (!s
->hit
|| SSL_IS_TLS13(s
))
3270 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3271 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3272 && s
->session_ctx
->new_session_cb
!= NULL
) {
3273 SSL_SESSION_up_ref(s
->session
);
3274 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3275 SSL_SESSION_free(s
->session
);
3278 /* auto flush every 255 connections */
3279 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3281 if (mode
& SSL_SESS_CACHE_CLIENT
)
3282 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3284 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3285 if (CRYPTO_atomic_read(stat
, &val
, s
->session_ctx
->lock
)
3286 && (val
& 0xff) == 0xff)
3287 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3291 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3296 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3301 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3305 if (s
->method
!= meth
) {
3306 const SSL_METHOD
*sm
= s
->method
;
3307 int (*hf
) (SSL
*) = s
->handshake_func
;
3309 if (sm
->version
== meth
->version
)
3314 ret
= s
->method
->ssl_new(s
);
3317 if (hf
== sm
->ssl_connect
)
3318 s
->handshake_func
= meth
->ssl_connect
;
3319 else if (hf
== sm
->ssl_accept
)
3320 s
->handshake_func
= meth
->ssl_accept
;
3325 int SSL_get_error(const SSL
*s
, int i
)
3332 return SSL_ERROR_NONE
;
3335 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3336 * where we do encode the error
3338 if ((l
= ERR_peek_error()) != 0) {
3339 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3340 return SSL_ERROR_SYSCALL
;
3342 return SSL_ERROR_SSL
;
3345 if (SSL_want_read(s
)) {
3346 bio
= SSL_get_rbio(s
);
3347 if (BIO_should_read(bio
))
3348 return SSL_ERROR_WANT_READ
;
3349 else if (BIO_should_write(bio
))
3351 * This one doesn't make too much sense ... We never try to write
3352 * to the rbio, and an application program where rbio and wbio
3353 * are separate couldn't even know what it should wait for.
3354 * However if we ever set s->rwstate incorrectly (so that we have
3355 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3356 * wbio *are* the same, this test works around that bug; so it
3357 * might be safer to keep it.
3359 return SSL_ERROR_WANT_WRITE
;
3360 else if (BIO_should_io_special(bio
)) {
3361 reason
= BIO_get_retry_reason(bio
);
3362 if (reason
== BIO_RR_CONNECT
)
3363 return SSL_ERROR_WANT_CONNECT
;
3364 else if (reason
== BIO_RR_ACCEPT
)
3365 return SSL_ERROR_WANT_ACCEPT
;
3367 return SSL_ERROR_SYSCALL
; /* unknown */
3371 if (SSL_want_write(s
)) {
3372 /* Access wbio directly - in order to use the buffered bio if present */
3374 if (BIO_should_write(bio
))
3375 return SSL_ERROR_WANT_WRITE
;
3376 else if (BIO_should_read(bio
))
3378 * See above (SSL_want_read(s) with BIO_should_write(bio))
3380 return SSL_ERROR_WANT_READ
;
3381 else if (BIO_should_io_special(bio
)) {
3382 reason
= BIO_get_retry_reason(bio
);
3383 if (reason
== BIO_RR_CONNECT
)
3384 return SSL_ERROR_WANT_CONNECT
;
3385 else if (reason
== BIO_RR_ACCEPT
)
3386 return SSL_ERROR_WANT_ACCEPT
;
3388 return SSL_ERROR_SYSCALL
;
3391 if (SSL_want_x509_lookup(s
))
3392 return SSL_ERROR_WANT_X509_LOOKUP
;
3393 if (SSL_want_async(s
))
3394 return SSL_ERROR_WANT_ASYNC
;
3395 if (SSL_want_async_job(s
))
3396 return SSL_ERROR_WANT_ASYNC_JOB
;
3397 if (SSL_want_client_hello_cb(s
))
3398 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3400 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3401 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3402 return SSL_ERROR_ZERO_RETURN
;
3404 return SSL_ERROR_SYSCALL
;
3407 static int ssl_do_handshake_intern(void *vargs
)
3409 struct ssl_async_args
*args
;
3412 args
= (struct ssl_async_args
*)vargs
;
3415 return s
->handshake_func(s
);
3418 int SSL_do_handshake(SSL
*s
)
3422 if (s
->handshake_func
== NULL
) {
3423 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3427 ossl_statem_check_finish_init(s
, -1);
3429 s
->method
->ssl_renegotiate_check(s
, 0);
3431 if (SSL_is_server(s
)) {
3432 /* clear SNI settings at server-side */
3433 OPENSSL_free(s
->ext
.hostname
);
3434 s
->ext
.hostname
= NULL
;
3437 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3438 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3439 struct ssl_async_args args
;
3443 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3445 ret
= s
->handshake_func(s
);
3451 void SSL_set_accept_state(SSL
*s
)
3455 ossl_statem_clear(s
);
3456 s
->handshake_func
= s
->method
->ssl_accept
;
3460 void SSL_set_connect_state(SSL
*s
)
3464 ossl_statem_clear(s
);
3465 s
->handshake_func
= s
->method
->ssl_connect
;
3469 int ssl_undefined_function(SSL
*s
)
3471 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3475 int ssl_undefined_void_function(void)
3477 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3478 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3482 int ssl_undefined_const_function(const SSL
*s
)
3487 const SSL_METHOD
*ssl_bad_method(int ver
)
3489 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3493 const char *ssl_protocol_to_string(int version
)
3497 case TLS1_3_VERSION
:
3500 case TLS1_2_VERSION
:
3503 case TLS1_1_VERSION
:
3518 case DTLS1_2_VERSION
:
3526 const char *SSL_get_version(const SSL
*s
)
3528 return ssl_protocol_to_string(s
->version
);
3531 SSL
*SSL_dup(SSL
*s
)
3533 STACK_OF(X509_NAME
) *sk
;
3538 /* If we're not quiescent, just up_ref! */
3539 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3540 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3545 * Otherwise, copy configuration state, and session if set.
3547 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3550 if (s
->session
!= NULL
) {
3552 * Arranges to share the same session via up_ref. This "copies"
3553 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3555 if (!SSL_copy_session_id(ret
, s
))
3559 * No session has been established yet, so we have to expect that
3560 * s->cert or ret->cert will be changed later -- they should not both
3561 * point to the same object, and thus we can't use
3562 * SSL_copy_session_id.
3564 if (!SSL_set_ssl_method(ret
, s
->method
))
3567 if (s
->cert
!= NULL
) {
3568 ssl_cert_free(ret
->cert
);
3569 ret
->cert
= ssl_cert_dup(s
->cert
);
3570 if (ret
->cert
== NULL
)
3574 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3575 (int)s
->sid_ctx_length
))
3579 if (!ssl_dane_dup(ret
, s
))
3581 ret
->version
= s
->version
;
3582 ret
->options
= s
->options
;
3583 ret
->mode
= s
->mode
;
3584 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3585 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3586 ret
->msg_callback
= s
->msg_callback
;
3587 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3588 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3589 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3590 ret
->generate_session_id
= s
->generate_session_id
;
3592 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3594 /* copy app data, a little dangerous perhaps */
3595 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3598 /* setup rbio, and wbio */
3599 if (s
->rbio
!= NULL
) {
3600 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3603 if (s
->wbio
!= NULL
) {
3604 if (s
->wbio
!= s
->rbio
) {
3605 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3608 BIO_up_ref(ret
->rbio
);
3609 ret
->wbio
= ret
->rbio
;
3613 ret
->server
= s
->server
;
3614 if (s
->handshake_func
) {
3616 SSL_set_accept_state(ret
);
3618 SSL_set_connect_state(ret
);
3620 ret
->shutdown
= s
->shutdown
;
3623 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3624 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3626 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3628 /* dup the cipher_list and cipher_list_by_id stacks */
3629 if (s
->cipher_list
!= NULL
) {
3630 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3633 if (s
->cipher_list_by_id
!= NULL
)
3634 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3638 /* Dup the client_CA list */
3639 if (s
->ca_names
!= NULL
) {
3640 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3643 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3644 xn
= sk_X509_NAME_value(sk
, i
);
3645 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3658 void ssl_clear_cipher_ctx(SSL
*s
)
3660 if (s
->enc_read_ctx
!= NULL
) {
3661 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3662 s
->enc_read_ctx
= NULL
;
3664 if (s
->enc_write_ctx
!= NULL
) {
3665 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3666 s
->enc_write_ctx
= NULL
;
3668 #ifndef OPENSSL_NO_COMP
3669 COMP_CTX_free(s
->expand
);
3671 COMP_CTX_free(s
->compress
);
3676 X509
*SSL_get_certificate(const SSL
*s
)
3678 if (s
->cert
!= NULL
)
3679 return s
->cert
->key
->x509
;
3684 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3686 if (s
->cert
!= NULL
)
3687 return s
->cert
->key
->privatekey
;
3692 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3694 if (ctx
->cert
!= NULL
)
3695 return ctx
->cert
->key
->x509
;
3700 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3702 if (ctx
->cert
!= NULL
)
3703 return ctx
->cert
->key
->privatekey
;
3708 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3710 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3711 return s
->session
->cipher
;
3715 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3717 return s
->s3
->tmp
.new_cipher
;
3720 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3722 #ifndef OPENSSL_NO_COMP
3723 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3729 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3731 #ifndef OPENSSL_NO_COMP
3732 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3738 int ssl_init_wbio_buffer(SSL
*s
)
3742 if (s
->bbio
!= NULL
) {
3743 /* Already buffered. */
3747 bbio
= BIO_new(BIO_f_buffer());
3748 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3750 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3754 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3759 int ssl_free_wbio_buffer(SSL
*s
)
3761 /* callers ensure s is never null */
3762 if (s
->bbio
== NULL
)
3765 s
->wbio
= BIO_pop(s
->wbio
);
3766 if (!ossl_assert(s
->wbio
!= NULL
))
3774 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3776 ctx
->quiet_shutdown
= mode
;
3779 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3781 return ctx
->quiet_shutdown
;
3784 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3786 s
->quiet_shutdown
= mode
;
3789 int SSL_get_quiet_shutdown(const SSL
*s
)
3791 return s
->quiet_shutdown
;
3794 void SSL_set_shutdown(SSL
*s
, int mode
)
3799 int SSL_get_shutdown(const SSL
*s
)
3804 int SSL_version(const SSL
*s
)
3809 int SSL_client_version(const SSL
*s
)
3811 return s
->client_version
;
3814 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3819 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3822 if (ssl
->ctx
== ctx
)
3825 ctx
= ssl
->session_ctx
;
3826 new_cert
= ssl_cert_dup(ctx
->cert
);
3827 if (new_cert
== NULL
) {
3831 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3832 ssl_cert_free(new_cert
);
3836 ssl_cert_free(ssl
->cert
);
3837 ssl
->cert
= new_cert
;
3840 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3841 * so setter APIs must prevent invalid lengths from entering the system.
3843 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3847 * If the session ID context matches that of the parent SSL_CTX,
3848 * inherit it from the new SSL_CTX as well. If however the context does
3849 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3850 * leave it unchanged.
3852 if ((ssl
->ctx
!= NULL
) &&
3853 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3854 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3855 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3856 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3859 SSL_CTX_up_ref(ctx
);
3860 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3866 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3868 return X509_STORE_set_default_paths(ctx
->cert_store
);
3871 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3873 X509_LOOKUP
*lookup
;
3875 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3878 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3880 /* Clear any errors if the default directory does not exist */
3886 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3888 X509_LOOKUP
*lookup
;
3890 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3894 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3896 /* Clear any errors if the default file does not exist */
3902 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3905 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
3908 void SSL_set_info_callback(SSL
*ssl
,
3909 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3911 ssl
->info_callback
= cb
;
3915 * One compiler (Diab DCC) doesn't like argument names in returned function
3918 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3921 return ssl
->info_callback
;
3924 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3926 ssl
->verify_result
= arg
;
3929 long SSL_get_verify_result(const SSL
*ssl
)
3931 return ssl
->verify_result
;
3934 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3937 return sizeof(ssl
->s3
->client_random
);
3938 if (outlen
> sizeof(ssl
->s3
->client_random
))
3939 outlen
= sizeof(ssl
->s3
->client_random
);
3940 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3944 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3947 return sizeof(ssl
->s3
->server_random
);
3948 if (outlen
> sizeof(ssl
->s3
->server_random
))
3949 outlen
= sizeof(ssl
->s3
->server_random
);
3950 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3954 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3955 unsigned char *out
, size_t outlen
)
3958 return session
->master_key_length
;
3959 if (outlen
> session
->master_key_length
)
3960 outlen
= session
->master_key_length
;
3961 memcpy(out
, session
->master_key
, outlen
);
3965 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3968 if (len
> sizeof(sess
->master_key
))
3971 memcpy(sess
->master_key
, in
, len
);
3972 sess
->master_key_length
= len
;
3977 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3979 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
3982 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3984 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
3987 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3989 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
3992 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3994 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
3997 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3999 return ctx
->cert_store
;
4002 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4004 X509_STORE_free(ctx
->cert_store
);
4005 ctx
->cert_store
= store
;
4008 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4011 X509_STORE_up_ref(store
);
4012 SSL_CTX_set_cert_store(ctx
, store
);
4015 int SSL_want(const SSL
*s
)
4021 * \brief Set the callback for generating temporary DH keys.
4022 * \param ctx the SSL context.
4023 * \param dh the callback
4026 #ifndef OPENSSL_NO_DH
4027 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4028 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4031 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4034 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4037 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4041 #ifndef OPENSSL_NO_PSK
4042 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4044 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4045 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4048 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4049 if (identity_hint
!= NULL
) {
4050 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4051 if (ctx
->cert
->psk_identity_hint
== NULL
)
4054 ctx
->cert
->psk_identity_hint
= NULL
;
4058 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4063 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4064 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4067 OPENSSL_free(s
->cert
->psk_identity_hint
);
4068 if (identity_hint
!= NULL
) {
4069 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4070 if (s
->cert
->psk_identity_hint
== NULL
)
4073 s
->cert
->psk_identity_hint
= NULL
;
4077 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4079 if (s
== NULL
|| s
->session
== NULL
)
4081 return s
->session
->psk_identity_hint
;
4084 const char *SSL_get_psk_identity(const SSL
*s
)
4086 if (s
== NULL
|| s
->session
== NULL
)
4088 return s
->session
->psk_identity
;
4091 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4093 s
->psk_client_callback
= cb
;
4096 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4098 ctx
->psk_client_callback
= cb
;
4101 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4103 s
->psk_server_callback
= cb
;
4106 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4108 ctx
->psk_server_callback
= cb
;
4112 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4114 s
->psk_find_session_cb
= cb
;
4117 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4118 SSL_psk_find_session_cb_func cb
)
4120 ctx
->psk_find_session_cb
= cb
;
4123 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4125 s
->psk_use_session_cb
= cb
;
4128 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4129 SSL_psk_use_session_cb_func cb
)
4131 ctx
->psk_use_session_cb
= cb
;
4134 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4135 void (*cb
) (int write_p
, int version
,
4136 int content_type
, const void *buf
,
4137 size_t len
, SSL
*ssl
, void *arg
))
4139 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4142 void SSL_set_msg_callback(SSL
*ssl
,
4143 void (*cb
) (int write_p
, int version
,
4144 int content_type
, const void *buf
,
4145 size_t len
, SSL
*ssl
, void *arg
))
4147 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4150 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4151 int (*cb
) (SSL
*ssl
,
4155 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4156 (void (*)(void))cb
);
4159 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4160 int (*cb
) (SSL
*ssl
,
4161 int is_forward_secure
))
4163 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4164 (void (*)(void))cb
);
4167 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4168 size_t (*cb
) (SSL
*ssl
, int type
,
4169 size_t len
, void *arg
))
4171 ctx
->record_padding_cb
= cb
;
4174 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4176 ctx
->record_padding_arg
= arg
;
4179 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4181 return ctx
->record_padding_arg
;
4184 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4186 /* block size of 0 or 1 is basically no padding */
4187 if (block_size
== 1)
4188 ctx
->block_padding
= 0;
4189 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4190 ctx
->block_padding
= block_size
;
4196 void SSL_set_record_padding_callback(SSL
*ssl
,
4197 size_t (*cb
) (SSL
*ssl
, int type
,
4198 size_t len
, void *arg
))
4200 ssl
->record_padding_cb
= cb
;
4203 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4205 ssl
->record_padding_arg
= arg
;
4208 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4210 return ssl
->record_padding_arg
;
4213 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4215 /* block size of 0 or 1 is basically no padding */
4216 if (block_size
== 1)
4217 ssl
->block_padding
= 0;
4218 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4219 ssl
->block_padding
= block_size
;
4226 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4227 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4228 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4229 * Returns the newly allocated ctx;
4232 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4234 ssl_clear_hash_ctx(hash
);
4235 *hash
= EVP_MD_CTX_new();
4236 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4237 EVP_MD_CTX_free(*hash
);
4244 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4247 EVP_MD_CTX_free(*hash
);
4251 /* Retrieve handshake hashes */
4252 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4255 EVP_MD_CTX
*ctx
= NULL
;
4256 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4257 int hashleni
= EVP_MD_CTX_size(hdgst
);
4260 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4261 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4262 ERR_R_INTERNAL_ERROR
);
4266 ctx
= EVP_MD_CTX_new();
4270 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4271 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4272 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4273 ERR_R_INTERNAL_ERROR
);
4277 *hashlen
= hashleni
;
4281 EVP_MD_CTX_free(ctx
);
4285 int SSL_session_reused(SSL
*s
)
4290 int SSL_is_server(const SSL
*s
)
4295 #if OPENSSL_API_COMPAT < 0x10100000L
4296 void SSL_set_debug(SSL
*s
, int debug
)
4298 /* Old function was do-nothing anyway... */
4304 void SSL_set_security_level(SSL
*s
, int level
)
4306 s
->cert
->sec_level
= level
;
4309 int SSL_get_security_level(const SSL
*s
)
4311 return s
->cert
->sec_level
;
4314 void SSL_set_security_callback(SSL
*s
,
4315 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4316 int op
, int bits
, int nid
,
4317 void *other
, void *ex
))
4319 s
->cert
->sec_cb
= cb
;
4322 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4323 const SSL_CTX
*ctx
, int op
,
4324 int bits
, int nid
, void *other
,
4326 return s
->cert
->sec_cb
;
4329 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4331 s
->cert
->sec_ex
= ex
;
4334 void *SSL_get0_security_ex_data(const SSL
*s
)
4336 return s
->cert
->sec_ex
;
4339 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4341 ctx
->cert
->sec_level
= level
;
4344 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4346 return ctx
->cert
->sec_level
;
4349 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4350 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4351 int op
, int bits
, int nid
,
4352 void *other
, void *ex
))
4354 ctx
->cert
->sec_cb
= cb
;
4357 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4363 return ctx
->cert
->sec_cb
;
4366 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4368 ctx
->cert
->sec_ex
= ex
;
4371 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4373 return ctx
->cert
->sec_ex
;
4377 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4378 * can return unsigned long, instead of the generic long return value from the
4379 * control interface.
4381 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4383 return ctx
->options
;
4386 unsigned long SSL_get_options(const SSL
*s
)
4391 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4393 return ctx
->options
|= op
;
4396 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4398 return s
->options
|= op
;
4401 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4403 return ctx
->options
&= ~op
;
4406 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4408 return s
->options
&= ~op
;
4411 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4413 return s
->verified_chain
;
4416 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4418 #ifndef OPENSSL_NO_CT
4421 * Moves SCTs from the |src| stack to the |dst| stack.
4422 * The source of each SCT will be set to |origin|.
4423 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4425 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4427 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4428 sct_source_t origin
)
4434 *dst
= sk_SCT_new_null();
4436 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4441 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4442 if (SCT_set_source(sct
, origin
) != 1)
4445 if (sk_SCT_push(*dst
, sct
) <= 0)
4453 sk_SCT_push(src
, sct
); /* Put the SCT back */
4458 * Look for data collected during ServerHello and parse if found.
4459 * Returns the number of SCTs extracted.
4461 static int ct_extract_tls_extension_scts(SSL
*s
)
4463 int scts_extracted
= 0;
4465 if (s
->ext
.scts
!= NULL
) {
4466 const unsigned char *p
= s
->ext
.scts
;
4467 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4469 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4471 SCT_LIST_free(scts
);
4474 return scts_extracted
;
4478 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4479 * contains an SCT X509 extension. They will be stored in |s->scts|.
4481 * - The number of SCTs extracted, assuming an OCSP response exists.
4482 * - 0 if no OCSP response exists or it contains no SCTs.
4483 * - A negative integer if an error occurs.
4485 static int ct_extract_ocsp_response_scts(SSL
*s
)
4487 # ifndef OPENSSL_NO_OCSP
4488 int scts_extracted
= 0;
4489 const unsigned char *p
;
4490 OCSP_BASICRESP
*br
= NULL
;
4491 OCSP_RESPONSE
*rsp
= NULL
;
4492 STACK_OF(SCT
) *scts
= NULL
;
4495 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4498 p
= s
->ext
.ocsp
.resp
;
4499 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4503 br
= OCSP_response_get1_basic(rsp
);
4507 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4508 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4514 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4516 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4517 if (scts_extracted
< 0)
4521 SCT_LIST_free(scts
);
4522 OCSP_BASICRESP_free(br
);
4523 OCSP_RESPONSE_free(rsp
);
4524 return scts_extracted
;
4526 /* Behave as if no OCSP response exists */
4532 * Attempts to extract SCTs from the peer certificate.
4533 * Return the number of SCTs extracted, or a negative integer if an error
4536 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4538 int scts_extracted
= 0;
4539 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4542 STACK_OF(SCT
) *scts
=
4543 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4546 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4548 SCT_LIST_free(scts
);
4551 return scts_extracted
;
4555 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4556 * response (if it exists) and X509v3 extensions in the certificate.
4557 * Returns NULL if an error occurs.
4559 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4561 if (!s
->scts_parsed
) {
4562 if (ct_extract_tls_extension_scts(s
) < 0 ||
4563 ct_extract_ocsp_response_scts(s
) < 0 ||
4564 ct_extract_x509v3_extension_scts(s
) < 0)
4574 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4575 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4580 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4581 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4583 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4586 for (i
= 0; i
< count
; ++i
) {
4587 SCT
*sct
= sk_SCT_value(scts
, i
);
4588 int status
= SCT_get_validation_status(sct
);
4590 if (status
== SCT_VALIDATION_STATUS_VALID
)
4593 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4597 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4601 * Since code exists that uses the custom extension handler for CT, look
4602 * for this and throw an error if they have already registered to use CT.
4604 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4605 TLSEXT_TYPE_signed_certificate_timestamp
))
4607 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4608 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4612 if (callback
!= NULL
) {
4614 * If we are validating CT, then we MUST accept SCTs served via OCSP
4616 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4620 s
->ct_validation_callback
= callback
;
4621 s
->ct_validation_callback_arg
= arg
;
4626 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4627 ssl_ct_validation_cb callback
, void *arg
)
4630 * Since code exists that uses the custom extension handler for CT, look for
4631 * this and throw an error if they have already registered to use CT.
4633 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4634 TLSEXT_TYPE_signed_certificate_timestamp
))
4636 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4637 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4641 ctx
->ct_validation_callback
= callback
;
4642 ctx
->ct_validation_callback_arg
= arg
;
4646 int SSL_ct_is_enabled(const SSL
*s
)
4648 return s
->ct_validation_callback
!= NULL
;
4651 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4653 return ctx
->ct_validation_callback
!= NULL
;
4656 int ssl_validate_ct(SSL
*s
)
4659 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4661 SSL_DANE
*dane
= &s
->dane
;
4662 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4663 const STACK_OF(SCT
) *scts
;
4666 * If no callback is set, the peer is anonymous, or its chain is invalid,
4667 * skip SCT validation - just return success. Applications that continue
4668 * handshakes without certificates, with unverified chains, or pinned leaf
4669 * certificates are outside the scope of the WebPKI and CT.
4671 * The above exclusions notwithstanding the vast majority of peers will
4672 * have rather ordinary certificate chains validated by typical
4673 * applications that perform certificate verification and therefore will
4674 * process SCTs when enabled.
4676 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4677 s
->verify_result
!= X509_V_OK
||
4678 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4682 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4683 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4685 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4686 switch (dane
->mtlsa
->usage
) {
4687 case DANETLS_USAGE_DANE_TA
:
4688 case DANETLS_USAGE_DANE_EE
:
4693 ctx
= CT_POLICY_EVAL_CTX_new();
4695 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
4696 ERR_R_MALLOC_FAILURE
);
4700 issuer
= sk_X509_value(s
->verified_chain
, 1);
4701 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4702 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4703 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4704 CT_POLICY_EVAL_CTX_set_time(
4705 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4707 scts
= SSL_get0_peer_scts(s
);
4710 * This function returns success (> 0) only when all the SCTs are valid, 0
4711 * when some are invalid, and < 0 on various internal errors (out of
4712 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4713 * reason to abort the handshake, that decision is up to the callback.
4714 * Therefore, we error out only in the unexpected case that the return
4715 * value is negative.
4717 * XXX: One might well argue that the return value of this function is an
4718 * unfortunate design choice. Its job is only to determine the validation
4719 * status of each of the provided SCTs. So long as it correctly separates
4720 * the wheat from the chaff it should return success. Failure in this case
4721 * ought to correspond to an inability to carry out its duties.
4723 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4724 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4725 SSL_R_SCT_VERIFICATION_FAILED
);
4729 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4731 ret
= 0; /* This function returns 0 on failure */
4733 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4734 SSL_R_CALLBACK_FAILED
);
4737 CT_POLICY_EVAL_CTX_free(ctx
);
4739 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4740 * failure return code here. Also the application may wish the complete
4741 * the handshake, and then disconnect cleanly at a higher layer, after
4742 * checking the verification status of the completed connection.
4744 * We therefore force a certificate verification failure which will be
4745 * visible via SSL_get_verify_result() and cached as part of any resumed
4748 * Note: the permissive callback is for information gathering only, always
4749 * returns success, and does not affect verification status. Only the
4750 * strict callback or a custom application-specified callback can trigger
4751 * connection failure or record a verification error.
4754 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4758 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4760 switch (validation_mode
) {
4762 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4764 case SSL_CT_VALIDATION_PERMISSIVE
:
4765 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4766 case SSL_CT_VALIDATION_STRICT
:
4767 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4771 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4773 switch (validation_mode
) {
4775 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4777 case SSL_CT_VALIDATION_PERMISSIVE
:
4778 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4779 case SSL_CT_VALIDATION_STRICT
:
4780 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4784 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4786 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4789 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4791 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4794 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4796 CTLOG_STORE_free(ctx
->ctlog_store
);
4797 ctx
->ctlog_store
= logs
;
4800 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4802 return ctx
->ctlog_store
;
4805 #endif /* OPENSSL_NO_CT */
4807 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4810 c
->client_hello_cb
= cb
;
4811 c
->client_hello_cb_arg
= arg
;
4814 int SSL_client_hello_isv2(SSL
*s
)
4816 if (s
->clienthello
== NULL
)
4818 return s
->clienthello
->isv2
;
4821 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4823 if (s
->clienthello
== NULL
)
4825 return s
->clienthello
->legacy_version
;
4828 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4830 if (s
->clienthello
== NULL
)
4833 *out
= s
->clienthello
->random
;
4834 return SSL3_RANDOM_SIZE
;
4837 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4839 if (s
->clienthello
== NULL
)
4842 *out
= s
->clienthello
->session_id
;
4843 return s
->clienthello
->session_id_len
;
4846 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4848 if (s
->clienthello
== NULL
)
4851 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4852 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4855 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4857 if (s
->clienthello
== NULL
)
4860 *out
= s
->clienthello
->compressions
;
4861 return s
->clienthello
->compressions_len
;
4864 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4870 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4872 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4873 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4877 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4878 if (present
== NULL
)
4880 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4881 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4883 if (ext
->received_order
>= num
)
4885 present
[ext
->received_order
] = ext
->type
;
4892 OPENSSL_free(present
);
4896 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4902 if (s
->clienthello
== NULL
)
4904 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4905 r
= s
->clienthello
->pre_proc_exts
+ i
;
4906 if (r
->present
&& r
->type
== type
) {
4908 *out
= PACKET_data(&r
->data
);
4910 *outlen
= PACKET_remaining(&r
->data
);
4917 int SSL_free_buffers(SSL
*ssl
)
4919 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4921 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4924 RECORD_LAYER_release(rl
);
4928 int SSL_alloc_buffers(SSL
*ssl
)
4930 return ssl3_setup_buffers(ssl
);
4933 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4935 ctx
->keylog_callback
= cb
;
4938 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4940 return ctx
->keylog_callback
;
4943 static int nss_keylog_int(const char *prefix
,
4945 const uint8_t *parameter_1
,
4946 size_t parameter_1_len
,
4947 const uint8_t *parameter_2
,
4948 size_t parameter_2_len
)
4951 char *cursor
= NULL
;
4956 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4959 * Our output buffer will contain the following strings, rendered with
4960 * space characters in between, terminated by a NULL character: first the
4961 * prefix, then the first parameter, then the second parameter. The
4962 * meaning of each parameter depends on the specific key material being
4963 * logged. Note that the first and second parameters are encoded in
4964 * hexadecimal, so we need a buffer that is twice their lengths.
4966 prefix_len
= strlen(prefix
);
4967 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4968 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4969 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
4970 ERR_R_MALLOC_FAILURE
);
4974 strcpy(cursor
, prefix
);
4975 cursor
+= prefix_len
;
4978 for (i
= 0; i
< parameter_1_len
; i
++) {
4979 sprintf(cursor
, "%02x", parameter_1
[i
]);
4984 for (i
= 0; i
< parameter_2_len
; i
++) {
4985 sprintf(cursor
, "%02x", parameter_2
[i
]);
4990 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4996 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4997 const uint8_t *encrypted_premaster
,
4998 size_t encrypted_premaster_len
,
4999 const uint8_t *premaster
,
5000 size_t premaster_len
)
5002 if (encrypted_premaster_len
< 8) {
5003 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5004 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5008 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5009 return nss_keylog_int("RSA",
5011 encrypted_premaster
,
5017 int ssl_log_secret(SSL
*ssl
,
5019 const uint8_t *secret
,
5022 return nss_keylog_int(label
,
5024 ssl
->s3
->client_random
,
5030 #define SSLV2_CIPHER_LEN 3
5032 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5036 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5038 if (PACKET_remaining(cipher_suites
) == 0) {
5039 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5040 SSL_R_NO_CIPHERS_SPECIFIED
);
5044 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5045 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5046 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5050 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
5051 s
->s3
->tmp
.ciphers_raw
= NULL
;
5052 s
->s3
->tmp
.ciphers_rawlen
= 0;
5055 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5056 PACKET sslv2ciphers
= *cipher_suites
;
5057 unsigned int leadbyte
;
5061 * We store the raw ciphers list in SSLv3+ format so we need to do some
5062 * preprocessing to convert the list first. If there are any SSLv2 only
5063 * ciphersuites with a non-zero leading byte then we are going to
5064 * slightly over allocate because we won't store those. But that isn't a
5067 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5068 s
->s3
->tmp
.ciphers_raw
= raw
;
5070 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5071 ERR_R_MALLOC_FAILURE
);
5074 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
5075 PACKET_remaining(&sslv2ciphers
) > 0;
5076 raw
+= TLS_CIPHER_LEN
) {
5077 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5079 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5082 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5083 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5085 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
5086 s
->s3
->tmp
.ciphers_raw
= NULL
;
5087 s
->s3
->tmp
.ciphers_rawlen
= 0;
5091 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5093 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5094 &s
->s3
->tmp
.ciphers_rawlen
)) {
5095 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5096 ERR_R_INTERNAL_ERROR
);
5102 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5103 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5104 STACK_OF(SSL_CIPHER
) **scsvs
)
5108 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5110 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5113 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5114 STACK_OF(SSL_CIPHER
) **skp
,
5115 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5116 int sslv2format
, int fatal
)
5118 const SSL_CIPHER
*c
;
5119 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5120 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5122 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5123 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5125 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5127 if (PACKET_remaining(cipher_suites
) == 0) {
5129 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5130 SSL_R_NO_CIPHERS_SPECIFIED
);
5132 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5136 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5138 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5139 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5141 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5142 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5146 sk
= sk_SSL_CIPHER_new_null();
5147 scsvs
= sk_SSL_CIPHER_new_null();
5148 if (sk
== NULL
|| scsvs
== NULL
) {
5150 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5151 ERR_R_MALLOC_FAILURE
);
5153 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5157 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5159 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5160 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5161 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5163 if (sslv2format
&& cipher
[0] != '\0')
5166 /* For SSLv2-compat, ignore leading 0-byte. */
5167 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5169 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5170 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5172 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5173 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5175 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5180 if (PACKET_remaining(cipher_suites
) > 0) {
5182 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5185 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5192 sk_SSL_CIPHER_free(sk
);
5193 if (scsvs_out
!= NULL
)
5196 sk_SSL_CIPHER_free(scsvs
);
5199 sk_SSL_CIPHER_free(sk
);
5200 sk_SSL_CIPHER_free(scsvs
);
5204 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5206 ctx
->max_early_data
= max_early_data
;
5211 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5213 return ctx
->max_early_data
;
5216 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5218 s
->max_early_data
= max_early_data
;
5223 uint32_t SSL_get_max_early_data(const SSL
*s
)
5225 return s
->max_early_data
;
5228 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5230 if (s
->drbg
!= NULL
) {
5232 * Currently, it's the duty of the caller to serialize the generate
5233 * requests to the DRBG. So formally we have to check whether
5234 * s->drbg->lock != NULL and take the lock if this is the case.
5235 * However, this DRBG is unique to a given SSL object, and we already
5236 * require that SSL objects are only accessed by a single thread at
5237 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5238 * no risk that this DRBG is accessed by a child DRBG in parallel
5239 * for reseeding. As such, we can rely on the application's
5240 * serialization of SSL accesses for the needed concurrency protection
5243 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5245 return RAND_bytes(rnd
, (int)size
);
5248 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5250 /* Return any active Max Fragment Len extension */
5251 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5252 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5254 /* return current SSL connection setting */
5255 return ssl
->max_send_fragment
;
5258 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5260 /* Return a value regarding an active Max Fragment Len extension */
5261 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5262 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5263 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5265 /* else limit |split_send_fragment| to current |max_send_fragment| */
5266 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5267 return ssl
->max_send_fragment
;
5269 /* return current SSL connection setting */
5270 return ssl
->split_send_fragment
;