2 * Copyright 1995-2018 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 const 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;
593 s
->hello_retry_request
= 0;
599 if (s
->renegotiate
) {
600 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
604 ossl_statem_clear(s
);
606 s
->version
= s
->method
->version
;
607 s
->client_version
= s
->version
;
608 s
->rwstate
= SSL_NOTHING
;
610 BUF_MEM_free(s
->init_buf
);
615 s
->key_update
= SSL_KEY_UPDATE_NONE
;
617 /* Reset DANE verification result state */
620 X509_free(s
->dane
.mcert
);
621 s
->dane
.mcert
= NULL
;
622 s
->dane
.mtlsa
= NULL
;
624 /* Clear the verification result peername */
625 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
628 * Check to see if we were changed into a different method, if so, revert
631 if (s
->method
!= s
->ctx
->method
) {
632 s
->method
->ssl_free(s
);
633 s
->method
= s
->ctx
->method
;
634 if (!s
->method
->ssl_new(s
))
637 if (!s
->method
->ssl_clear(s
))
641 RECORD_LAYER_clear(&s
->rlayer
);
646 /** Used to change an SSL_CTXs default SSL method type */
647 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
649 STACK_OF(SSL_CIPHER
) *sk
;
653 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
654 &(ctx
->cipher_list_by_id
),
655 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
656 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
657 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
663 SSL
*SSL_new(SSL_CTX
*ctx
)
668 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
671 if (ctx
->method
== NULL
) {
672 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
676 s
= OPENSSL_zalloc(sizeof(*s
));
681 s
->lock
= CRYPTO_THREAD_lock_new();
682 if (s
->lock
== NULL
) {
689 * If not using the standard RAND (say for fuzzing), then don't use a
692 if (RAND_get_rand_method() == RAND_OpenSSL()) {
694 RAND_DRBG_new(RAND_DRBG_NID
, RAND_DRBG_FLAG_CTR_USE_DF
,
695 RAND_DRBG_get0_public());
697 || RAND_DRBG_instantiate(s
->drbg
,
698 (const unsigned char *) SSL_version_str
,
699 sizeof(SSL_version_str
) - 1) == 0)
703 RECORD_LAYER_init(&s
->rlayer
, s
);
705 s
->options
= ctx
->options
;
706 s
->dane
.flags
= ctx
->dane
.flags
;
707 s
->min_proto_version
= ctx
->min_proto_version
;
708 s
->max_proto_version
= ctx
->max_proto_version
;
710 s
->max_cert_list
= ctx
->max_cert_list
;
711 s
->max_early_data
= ctx
->max_early_data
;
714 * Earlier library versions used to copy the pointer to the CERT, not
715 * its contents; only when setting new parameters for the per-SSL
716 * copy, ssl_cert_new would be called (and the direct reference to
717 * the per-SSL_CTX settings would be lost, but those still were
718 * indirectly accessed for various purposes, and for that reason they
719 * used to be known as s->ctx->default_cert). Now we don't look at the
720 * SSL_CTX's CERT after having duplicated it once.
722 s
->cert
= ssl_cert_dup(ctx
->cert
);
726 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
727 s
->msg_callback
= ctx
->msg_callback
;
728 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
729 s
->verify_mode
= ctx
->verify_mode
;
730 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
731 s
->record_padding_cb
= ctx
->record_padding_cb
;
732 s
->record_padding_arg
= ctx
->record_padding_arg
;
733 s
->block_padding
= ctx
->block_padding
;
734 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
735 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
737 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
738 s
->verify_callback
= ctx
->default_verify_callback
;
739 s
->generate_session_id
= ctx
->generate_session_id
;
741 s
->param
= X509_VERIFY_PARAM_new();
742 if (s
->param
== NULL
)
744 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
745 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
747 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
748 s
->max_send_fragment
= ctx
->max_send_fragment
;
749 s
->split_send_fragment
= ctx
->split_send_fragment
;
750 s
->max_pipelines
= ctx
->max_pipelines
;
751 if (s
->max_pipelines
> 1)
752 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
753 if (ctx
->default_read_buf_len
> 0)
754 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
759 s
->ext
.debug_arg
= NULL
;
760 s
->ext
.ticket_expected
= 0;
761 s
->ext
.status_type
= ctx
->ext
.status_type
;
762 s
->ext
.status_expected
= 0;
763 s
->ext
.ocsp
.ids
= NULL
;
764 s
->ext
.ocsp
.exts
= NULL
;
765 s
->ext
.ocsp
.resp
= NULL
;
766 s
->ext
.ocsp
.resp_len
= 0;
768 s
->session_ctx
= ctx
;
769 #ifndef OPENSSL_NO_EC
770 if (ctx
->ext
.ecpointformats
) {
771 s
->ext
.ecpointformats
=
772 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
773 ctx
->ext
.ecpointformats_len
);
774 if (!s
->ext
.ecpointformats
)
776 s
->ext
.ecpointformats_len
=
777 ctx
->ext
.ecpointformats_len
;
779 if (ctx
->ext
.supportedgroups
) {
780 s
->ext
.supportedgroups
=
781 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
782 ctx
->ext
.supportedgroups_len
783 * sizeof(*ctx
->ext
.supportedgroups
));
784 if (!s
->ext
.supportedgroups
)
786 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
789 #ifndef OPENSSL_NO_NEXTPROTONEG
793 if (s
->ctx
->ext
.alpn
) {
794 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
795 if (s
->ext
.alpn
== NULL
)
797 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
798 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
801 s
->verified_chain
= NULL
;
802 s
->verify_result
= X509_V_OK
;
804 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
805 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
807 s
->method
= ctx
->method
;
809 s
->key_update
= SSL_KEY_UPDATE_NONE
;
811 if (!s
->method
->ssl_new(s
))
814 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
819 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
822 #ifndef OPENSSL_NO_PSK
823 s
->psk_client_callback
= ctx
->psk_client_callback
;
824 s
->psk_server_callback
= ctx
->psk_server_callback
;
826 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
827 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
831 #ifndef OPENSSL_NO_CT
832 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
833 ctx
->ct_validation_callback_arg
))
840 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
844 int SSL_is_dtls(const SSL
*s
)
846 return SSL_IS_DTLS(s
) ? 1 : 0;
849 int SSL_up_ref(SSL
*s
)
853 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
856 REF_PRINT_COUNT("SSL", s
);
857 REF_ASSERT_ISNT(i
< 2);
858 return ((i
> 1) ? 1 : 0);
861 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
862 unsigned int sid_ctx_len
)
864 if (sid_ctx_len
> sizeof(ctx
->sid_ctx
)) {
865 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
866 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
869 ctx
->sid_ctx_length
= sid_ctx_len
;
870 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
875 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
876 unsigned int sid_ctx_len
)
878 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
879 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
880 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
883 ssl
->sid_ctx_length
= sid_ctx_len
;
884 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
889 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
891 CRYPTO_THREAD_write_lock(ctx
->lock
);
892 ctx
->generate_session_id
= cb
;
893 CRYPTO_THREAD_unlock(ctx
->lock
);
897 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
899 CRYPTO_THREAD_write_lock(ssl
->lock
);
900 ssl
->generate_session_id
= cb
;
901 CRYPTO_THREAD_unlock(ssl
->lock
);
905 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
909 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
910 * we can "construct" a session to give us the desired check - i.e. to
911 * find if there's a session in the hash table that would conflict with
912 * any new session built out of this id/id_len and the ssl_version in use
917 if (id_len
> sizeof(r
.session_id
))
920 r
.ssl_version
= ssl
->version
;
921 r
.session_id_length
= id_len
;
922 memcpy(r
.session_id
, id
, id_len
);
924 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
925 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
926 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
930 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
932 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
935 int SSL_set_purpose(SSL
*s
, int purpose
)
937 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
940 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
942 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
945 int SSL_set_trust(SSL
*s
, int trust
)
947 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
950 int SSL_set1_host(SSL
*s
, const char *hostname
)
952 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
955 int SSL_add1_host(SSL
*s
, const char *hostname
)
957 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
960 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
962 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
965 const char *SSL_get0_peername(SSL
*s
)
967 return X509_VERIFY_PARAM_get0_peername(s
->param
);
970 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
972 return dane_ctx_enable(&ctx
->dane
);
975 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
977 unsigned long orig
= ctx
->dane
.flags
;
979 ctx
->dane
.flags
|= flags
;
983 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
985 unsigned long orig
= ctx
->dane
.flags
;
987 ctx
->dane
.flags
&= ~flags
;
991 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
993 SSL_DANE
*dane
= &s
->dane
;
995 if (s
->ctx
->dane
.mdmax
== 0) {
996 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
999 if (dane
->trecs
!= NULL
) {
1000 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1005 * Default SNI name. This rejects empty names, while set1_host below
1006 * accepts them and disables host name checks. To avoid side-effects with
1007 * invalid input, set the SNI name first.
1009 if (s
->ext
.hostname
== NULL
) {
1010 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1011 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1016 /* Primary RFC6125 reference identifier */
1017 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1018 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1024 dane
->dctx
= &s
->ctx
->dane
;
1025 dane
->trecs
= sk_danetls_record_new_null();
1027 if (dane
->trecs
== NULL
) {
1028 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1034 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1036 unsigned long orig
= ssl
->dane
.flags
;
1038 ssl
->dane
.flags
|= flags
;
1042 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1044 unsigned long orig
= ssl
->dane
.flags
;
1046 ssl
->dane
.flags
&= ~flags
;
1050 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1052 SSL_DANE
*dane
= &s
->dane
;
1054 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1058 *mcert
= dane
->mcert
;
1060 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1065 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1066 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1068 SSL_DANE
*dane
= &s
->dane
;
1070 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1074 *usage
= dane
->mtlsa
->usage
;
1076 *selector
= dane
->mtlsa
->selector
;
1078 *mtype
= dane
->mtlsa
->mtype
;
1080 *data
= dane
->mtlsa
->data
;
1082 *dlen
= dane
->mtlsa
->dlen
;
1087 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1092 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1093 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1095 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1098 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1101 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1104 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1106 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1109 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1111 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1114 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1119 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1124 void SSL_certs_clear(SSL
*s
)
1126 ssl_cert_clear_certs(s
->cert
);
1129 void SSL_free(SSL
*s
)
1136 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1137 REF_PRINT_COUNT("SSL", s
);
1140 REF_ASSERT_ISNT(i
< 0);
1142 X509_VERIFY_PARAM_free(s
->param
);
1143 dane_final(&s
->dane
);
1144 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1146 /* Ignore return value */
1147 ssl_free_wbio_buffer(s
);
1149 BIO_free_all(s
->wbio
);
1150 BIO_free_all(s
->rbio
);
1152 BUF_MEM_free(s
->init_buf
);
1154 /* add extra stuff */
1155 sk_SSL_CIPHER_free(s
->cipher_list
);
1156 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1158 /* Make the next call work :-) */
1159 if (s
->session
!= NULL
) {
1160 ssl_clear_bad_session(s
);
1161 SSL_SESSION_free(s
->session
);
1163 SSL_SESSION_free(s
->psksession
);
1164 OPENSSL_free(s
->psksession_id
);
1168 ssl_cert_free(s
->cert
);
1169 /* Free up if allocated */
1171 OPENSSL_free(s
->ext
.hostname
);
1172 SSL_CTX_free(s
->session_ctx
);
1173 #ifndef OPENSSL_NO_EC
1174 OPENSSL_free(s
->ext
.ecpointformats
);
1175 OPENSSL_free(s
->ext
.supportedgroups
);
1176 #endif /* OPENSSL_NO_EC */
1177 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1178 #ifndef OPENSSL_NO_OCSP
1179 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1181 #ifndef OPENSSL_NO_CT
1182 SCT_LIST_free(s
->scts
);
1183 OPENSSL_free(s
->ext
.scts
);
1185 OPENSSL_free(s
->ext
.ocsp
.resp
);
1186 OPENSSL_free(s
->ext
.alpn
);
1187 OPENSSL_free(s
->ext
.tls13_cookie
);
1188 OPENSSL_free(s
->clienthello
);
1190 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1192 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1194 if (s
->method
!= NULL
)
1195 s
->method
->ssl_free(s
);
1197 RECORD_LAYER_release(&s
->rlayer
);
1199 SSL_CTX_free(s
->ctx
);
1201 ASYNC_WAIT_CTX_free(s
->waitctx
);
1203 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1204 OPENSSL_free(s
->ext
.npn
);
1207 #ifndef OPENSSL_NO_SRTP
1208 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1211 RAND_DRBG_free(s
->drbg
);
1212 CRYPTO_THREAD_lock_free(s
->lock
);
1217 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1219 BIO_free_all(s
->rbio
);
1223 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1226 * If the output buffering BIO is still in place, remove it
1228 if (s
->bbio
!= NULL
)
1229 s
->wbio
= BIO_pop(s
->wbio
);
1231 BIO_free_all(s
->wbio
);
1234 /* Re-attach |bbio| to the new |wbio|. */
1235 if (s
->bbio
!= NULL
)
1236 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1239 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1242 * For historical reasons, this function has many different cases in
1243 * ownership handling.
1246 /* If nothing has changed, do nothing */
1247 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1251 * If the two arguments are equal then one fewer reference is granted by the
1252 * caller than we want to take
1254 if (rbio
!= NULL
&& rbio
== wbio
)
1258 * If only the wbio is changed only adopt one reference.
1260 if (rbio
== SSL_get_rbio(s
)) {
1261 SSL_set0_wbio(s
, wbio
);
1265 * There is an asymmetry here for historical reasons. If only the rbio is
1266 * changed AND the rbio and wbio were originally different, then we only
1267 * adopt one reference.
1269 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1270 SSL_set0_rbio(s
, rbio
);
1274 /* Otherwise, adopt both references. */
1275 SSL_set0_rbio(s
, rbio
);
1276 SSL_set0_wbio(s
, wbio
);
1279 BIO
*SSL_get_rbio(const SSL
*s
)
1284 BIO
*SSL_get_wbio(const SSL
*s
)
1286 if (s
->bbio
!= NULL
) {
1288 * If |bbio| is active, the true caller-configured BIO is its
1291 return BIO_next(s
->bbio
);
1296 int SSL_get_fd(const SSL
*s
)
1298 return SSL_get_rfd(s
);
1301 int SSL_get_rfd(const SSL
*s
)
1306 b
= SSL_get_rbio(s
);
1307 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1309 BIO_get_fd(r
, &ret
);
1313 int SSL_get_wfd(const SSL
*s
)
1318 b
= SSL_get_wbio(s
);
1319 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1321 BIO_get_fd(r
, &ret
);
1325 #ifndef OPENSSL_NO_SOCK
1326 int SSL_set_fd(SSL
*s
, int fd
)
1331 bio
= BIO_new(BIO_s_socket());
1334 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1337 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1338 SSL_set_bio(s
, bio
, bio
);
1344 int SSL_set_wfd(SSL
*s
, int fd
)
1346 BIO
*rbio
= SSL_get_rbio(s
);
1348 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1349 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1350 BIO
*bio
= BIO_new(BIO_s_socket());
1353 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1356 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1357 SSL_set0_wbio(s
, bio
);
1360 SSL_set0_wbio(s
, rbio
);
1365 int SSL_set_rfd(SSL
*s
, int fd
)
1367 BIO
*wbio
= SSL_get_wbio(s
);
1369 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1370 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1371 BIO
*bio
= BIO_new(BIO_s_socket());
1374 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1377 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1378 SSL_set0_rbio(s
, bio
);
1381 SSL_set0_rbio(s
, wbio
);
1388 /* return length of latest Finished message we sent, copy to 'buf' */
1389 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1393 if (s
->s3
!= NULL
) {
1394 ret
= s
->s3
->tmp
.finish_md_len
;
1397 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1402 /* return length of latest Finished message we expected, copy to 'buf' */
1403 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1407 if (s
->s3
!= NULL
) {
1408 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1411 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1416 int SSL_get_verify_mode(const SSL
*s
)
1418 return s
->verify_mode
;
1421 int SSL_get_verify_depth(const SSL
*s
)
1423 return X509_VERIFY_PARAM_get_depth(s
->param
);
1426 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1427 return s
->verify_callback
;
1430 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1432 return ctx
->verify_mode
;
1435 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1437 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1440 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1441 return ctx
->default_verify_callback
;
1444 void SSL_set_verify(SSL
*s
, int mode
,
1445 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1447 s
->verify_mode
= mode
;
1448 if (callback
!= NULL
)
1449 s
->verify_callback
= callback
;
1452 void SSL_set_verify_depth(SSL
*s
, int depth
)
1454 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1457 void SSL_set_read_ahead(SSL
*s
, int yes
)
1459 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1462 int SSL_get_read_ahead(const SSL
*s
)
1464 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1467 int SSL_pending(const SSL
*s
)
1469 size_t pending
= s
->method
->ssl_pending(s
);
1472 * SSL_pending cannot work properly if read-ahead is enabled
1473 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1474 * impossible to fix since SSL_pending cannot report errors that may be
1475 * observed while scanning the new data. (Note that SSL_pending() is
1476 * often used as a boolean value, so we'd better not return -1.)
1478 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1479 * we just return INT_MAX.
1481 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1484 int SSL_has_pending(const SSL
*s
)
1487 * Similar to SSL_pending() but returns a 1 to indicate that we have
1488 * unprocessed data available or 0 otherwise (as opposed to the number of
1489 * bytes available). Unlike SSL_pending() this will take into account
1490 * read_ahead data. A 1 return simply indicates that we have unprocessed
1491 * data. That data may not result in any application data, or we may fail
1492 * to parse the records for some reason.
1494 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1497 return RECORD_LAYER_read_pending(&s
->rlayer
);
1500 X509
*SSL_get_peer_certificate(const SSL
*s
)
1504 if ((s
== NULL
) || (s
->session
== NULL
))
1507 r
= s
->session
->peer
;
1517 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1521 if ((s
== NULL
) || (s
->session
== NULL
))
1524 r
= s
->session
->peer_chain
;
1527 * If we are a client, cert_chain includes the peer's own certificate; if
1528 * we are a server, it does not.
1535 * Now in theory, since the calling process own 't' it should be safe to
1536 * modify. We need to be able to read f without being hassled
1538 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1541 /* Do we need to to SSL locking? */
1542 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1547 * what if we are setup for one protocol version but want to talk another
1549 if (t
->method
!= f
->method
) {
1550 t
->method
->ssl_free(t
);
1551 t
->method
= f
->method
;
1552 if (t
->method
->ssl_new(t
) == 0)
1556 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1557 ssl_cert_free(t
->cert
);
1559 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1566 /* Fix this so it checks all the valid key/cert options */
1567 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1569 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1570 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1573 if (ctx
->cert
->key
->privatekey
== NULL
) {
1574 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1577 return X509_check_private_key
1578 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1581 /* Fix this function so that it takes an optional type parameter */
1582 int SSL_check_private_key(const SSL
*ssl
)
1585 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1588 if (ssl
->cert
->key
->x509
== NULL
) {
1589 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1592 if (ssl
->cert
->key
->privatekey
== NULL
) {
1593 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1596 return X509_check_private_key(ssl
->cert
->key
->x509
,
1597 ssl
->cert
->key
->privatekey
);
1600 int SSL_waiting_for_async(SSL
*s
)
1608 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1610 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1614 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1617 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1618 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1620 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1624 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1628 int SSL_accept(SSL
*s
)
1630 if (s
->handshake_func
== NULL
) {
1631 /* Not properly initialized yet */
1632 SSL_set_accept_state(s
);
1635 return SSL_do_handshake(s
);
1638 int SSL_connect(SSL
*s
)
1640 if (s
->handshake_func
== NULL
) {
1641 /* Not properly initialized yet */
1642 SSL_set_connect_state(s
);
1645 return SSL_do_handshake(s
);
1648 long SSL_get_default_timeout(const SSL
*s
)
1650 return s
->method
->get_timeout();
1653 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1654 int (*func
) (void *))
1657 if (s
->waitctx
== NULL
) {
1658 s
->waitctx
= ASYNC_WAIT_CTX_new();
1659 if (s
->waitctx
== NULL
)
1662 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1663 sizeof(struct ssl_async_args
))) {
1665 s
->rwstate
= SSL_NOTHING
;
1666 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1669 s
->rwstate
= SSL_ASYNC_PAUSED
;
1672 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1678 s
->rwstate
= SSL_NOTHING
;
1679 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1680 /* Shouldn't happen */
1685 static int ssl_io_intern(void *vargs
)
1687 struct ssl_async_args
*args
;
1692 args
= (struct ssl_async_args
*)vargs
;
1696 switch (args
->type
) {
1698 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1700 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1702 return args
->f
.func_other(s
);
1707 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1709 if (s
->handshake_func
== NULL
) {
1710 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1714 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1715 s
->rwstate
= SSL_NOTHING
;
1719 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1720 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1721 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1725 * If we are a client and haven't received the ServerHello etc then we
1728 ossl_statem_check_finish_init(s
, 0);
1730 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1731 struct ssl_async_args args
;
1737 args
.type
= READFUNC
;
1738 args
.f
.func_read
= s
->method
->ssl_read
;
1740 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1741 *readbytes
= s
->asyncrw
;
1744 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1748 int SSL_read(SSL
*s
, void *buf
, int num
)
1754 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1758 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1761 * The cast is safe here because ret should be <= INT_MAX because num is
1765 ret
= (int)readbytes
;
1770 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1772 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1779 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1784 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1785 return SSL_READ_EARLY_DATA_ERROR
;
1788 switch (s
->early_data_state
) {
1789 case SSL_EARLY_DATA_NONE
:
1790 if (!SSL_in_before(s
)) {
1791 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1792 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1793 return SSL_READ_EARLY_DATA_ERROR
;
1797 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1798 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1799 ret
= SSL_accept(s
);
1802 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1803 return SSL_READ_EARLY_DATA_ERROR
;
1807 case SSL_EARLY_DATA_READ_RETRY
:
1808 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1809 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1810 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1812 * State machine will update early_data_state to
1813 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1816 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1817 != SSL_EARLY_DATA_FINISHED_READING
)) {
1818 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1819 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1820 : SSL_READ_EARLY_DATA_ERROR
;
1823 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1826 return SSL_READ_EARLY_DATA_FINISH
;
1829 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1830 return SSL_READ_EARLY_DATA_ERROR
;
1834 int SSL_get_early_data_status(const SSL
*s
)
1836 return s
->ext
.early_data
;
1839 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1841 if (s
->handshake_func
== NULL
) {
1842 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1846 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1849 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1850 struct ssl_async_args args
;
1856 args
.type
= READFUNC
;
1857 args
.f
.func_read
= s
->method
->ssl_peek
;
1859 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1860 *readbytes
= s
->asyncrw
;
1863 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1867 int SSL_peek(SSL
*s
, void *buf
, int num
)
1873 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1877 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1880 * The cast is safe here because ret should be <= INT_MAX because num is
1884 ret
= (int)readbytes
;
1890 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1892 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1899 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1901 if (s
->handshake_func
== NULL
) {
1902 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1906 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1907 s
->rwstate
= SSL_NOTHING
;
1908 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1912 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1913 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1914 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1915 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1918 /* If we are a client and haven't sent the Finished we better do that */
1919 ossl_statem_check_finish_init(s
, 1);
1921 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1923 struct ssl_async_args args
;
1926 args
.buf
= (void *)buf
;
1928 args
.type
= WRITEFUNC
;
1929 args
.f
.func_write
= s
->method
->ssl_write
;
1931 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1932 *written
= s
->asyncrw
;
1935 return s
->method
->ssl_write(s
, buf
, num
, written
);
1939 int SSL_write(SSL
*s
, const void *buf
, int num
)
1945 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1949 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1952 * The cast is safe here because ret should be <= INT_MAX because num is
1961 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1963 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1970 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1972 int ret
, early_data_state
;
1974 uint32_t partialwrite
;
1976 switch (s
->early_data_state
) {
1977 case SSL_EARLY_DATA_NONE
:
1979 || !SSL_in_before(s
)
1980 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1981 && (s
->psk_use_session_cb
== NULL
))) {
1982 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1983 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1988 case SSL_EARLY_DATA_CONNECT_RETRY
:
1989 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1990 ret
= SSL_connect(s
);
1993 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1998 case SSL_EARLY_DATA_WRITE_RETRY
:
1999 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2001 * We disable partial write for early data because we don't keep track
2002 * of how many bytes we've written between the SSL_write_ex() call and
2003 * the flush if the flush needs to be retried)
2005 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2006 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2007 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2008 s
->mode
|= partialwrite
;
2010 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2013 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2016 case SSL_EARLY_DATA_WRITE_FLUSH
:
2017 /* The buffering BIO is still in place so we need to flush it */
2018 if (statem_flush(s
) != 1)
2021 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2024 case SSL_EARLY_DATA_FINISHED_READING
:
2025 case SSL_EARLY_DATA_READ_RETRY
:
2026 early_data_state
= s
->early_data_state
;
2027 /* We are a server writing to an unauthenticated client */
2028 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2029 ret
= SSL_write_ex(s
, buf
, num
, written
);
2030 s
->early_data_state
= early_data_state
;
2034 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2039 int SSL_shutdown(SSL
*s
)
2042 * Note that this function behaves differently from what one might
2043 * expect. Return values are 0 for no success (yet), 1 for success; but
2044 * calling it once is usually not enough, even if blocking I/O is used
2045 * (see ssl3_shutdown).
2048 if (s
->handshake_func
== NULL
) {
2049 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2053 if (!SSL_in_init(s
)) {
2054 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2055 struct ssl_async_args args
;
2058 args
.type
= OTHERFUNC
;
2059 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2061 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2063 return s
->method
->ssl_shutdown(s
);
2066 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2071 int SSL_key_update(SSL
*s
, int updatetype
)
2074 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2075 * negotiated, and that it is appropriate to call SSL_key_update() instead
2076 * of SSL_renegotiate().
2078 if (!SSL_IS_TLS13(s
)) {
2079 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2083 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2084 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2085 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2089 if (!SSL_is_init_finished(s
)) {
2090 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2094 ossl_statem_set_in_init(s
, 1);
2095 s
->key_update
= updatetype
;
2099 int SSL_get_key_update_type(SSL
*s
)
2101 return s
->key_update
;
2104 int SSL_renegotiate(SSL
*s
)
2106 if (SSL_IS_TLS13(s
)) {
2107 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2111 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2112 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2119 return s
->method
->ssl_renegotiate(s
);
2122 int SSL_renegotiate_abbreviated(SSL
*s
)
2124 if (SSL_IS_TLS13(s
)) {
2125 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2129 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2130 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2137 return s
->method
->ssl_renegotiate(s
);
2140 int SSL_renegotiate_pending(SSL
*s
)
2143 * becomes true when negotiation is requested; false again once a
2144 * handshake has finished
2146 return (s
->renegotiate
!= 0);
2149 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2154 case SSL_CTRL_GET_READ_AHEAD
:
2155 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2156 case SSL_CTRL_SET_READ_AHEAD
:
2157 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2158 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2161 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2162 s
->msg_callback_arg
= parg
;
2166 return (s
->mode
|= larg
);
2167 case SSL_CTRL_CLEAR_MODE
:
2168 return (s
->mode
&= ~larg
);
2169 case SSL_CTRL_GET_MAX_CERT_LIST
:
2170 return (long)s
->max_cert_list
;
2171 case SSL_CTRL_SET_MAX_CERT_LIST
:
2174 l
= (long)s
->max_cert_list
;
2175 s
->max_cert_list
= (size_t)larg
;
2177 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2178 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2180 s
->max_send_fragment
= larg
;
2181 if (s
->max_send_fragment
< s
->split_send_fragment
)
2182 s
->split_send_fragment
= s
->max_send_fragment
;
2184 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2185 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2187 s
->split_send_fragment
= larg
;
2189 case SSL_CTRL_SET_MAX_PIPELINES
:
2190 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2192 s
->max_pipelines
= larg
;
2194 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2196 case SSL_CTRL_GET_RI_SUPPORT
:
2198 return s
->s3
->send_connection_binding
;
2201 case SSL_CTRL_CERT_FLAGS
:
2202 return (s
->cert
->cert_flags
|= larg
);
2203 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2204 return (s
->cert
->cert_flags
&= ~larg
);
2206 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2208 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2210 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2211 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2213 return TLS_CIPHER_LEN
;
2215 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2216 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2218 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2222 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2223 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2224 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2225 &s
->min_proto_version
);
2226 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2227 return s
->min_proto_version
;
2228 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2229 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2230 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2231 &s
->max_proto_version
);
2232 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2233 return s
->max_proto_version
;
2235 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2239 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2242 case SSL_CTRL_SET_MSG_CALLBACK
:
2243 s
->msg_callback
= (void (*)
2244 (int write_p
, int version
, int content_type
,
2245 const void *buf
, size_t len
, SSL
*ssl
,
2250 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2254 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2256 return ctx
->sessions
;
2259 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2263 /* For some cases with ctx == NULL perform syntax checks */
2266 #ifndef OPENSSL_NO_EC
2267 case SSL_CTRL_SET_GROUPS_LIST
:
2268 return tls1_set_groups_list(NULL
, NULL
, parg
);
2270 case SSL_CTRL_SET_SIGALGS_LIST
:
2271 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2272 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2279 case SSL_CTRL_GET_READ_AHEAD
:
2280 return ctx
->read_ahead
;
2281 case SSL_CTRL_SET_READ_AHEAD
:
2282 l
= ctx
->read_ahead
;
2283 ctx
->read_ahead
= larg
;
2286 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2287 ctx
->msg_callback_arg
= parg
;
2290 case SSL_CTRL_GET_MAX_CERT_LIST
:
2291 return (long)ctx
->max_cert_list
;
2292 case SSL_CTRL_SET_MAX_CERT_LIST
:
2295 l
= (long)ctx
->max_cert_list
;
2296 ctx
->max_cert_list
= (size_t)larg
;
2299 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2302 l
= (long)ctx
->session_cache_size
;
2303 ctx
->session_cache_size
= (size_t)larg
;
2305 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2306 return (long)ctx
->session_cache_size
;
2307 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2308 l
= ctx
->session_cache_mode
;
2309 ctx
->session_cache_mode
= larg
;
2311 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2312 return ctx
->session_cache_mode
;
2314 case SSL_CTRL_SESS_NUMBER
:
2315 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2316 case SSL_CTRL_SESS_CONNECT
:
2317 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect
, &i
, ctx
->lock
)
2319 case SSL_CTRL_SESS_CONNECT_GOOD
:
2320 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_good
, &i
, ctx
->lock
)
2322 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2323 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_renegotiate
, &i
,
2326 case SSL_CTRL_SESS_ACCEPT
:
2327 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept
, &i
, ctx
->lock
)
2329 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2330 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_good
, &i
, ctx
->lock
)
2332 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2333 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_renegotiate
, &i
,
2336 case SSL_CTRL_SESS_HIT
:
2337 return CRYPTO_atomic_read(&ctx
->stats
.sess_hit
, &i
, ctx
->lock
)
2339 case SSL_CTRL_SESS_CB_HIT
:
2340 return CRYPTO_atomic_read(&ctx
->stats
.sess_cb_hit
, &i
, ctx
->lock
)
2342 case SSL_CTRL_SESS_MISSES
:
2343 return CRYPTO_atomic_read(&ctx
->stats
.sess_miss
, &i
, ctx
->lock
)
2345 case SSL_CTRL_SESS_TIMEOUTS
:
2346 return CRYPTO_atomic_read(&ctx
->stats
.sess_timeout
, &i
, ctx
->lock
)
2348 case SSL_CTRL_SESS_CACHE_FULL
:
2349 return CRYPTO_atomic_read(&ctx
->stats
.sess_cache_full
, &i
, ctx
->lock
)
2352 return (ctx
->mode
|= larg
);
2353 case SSL_CTRL_CLEAR_MODE
:
2354 return (ctx
->mode
&= ~larg
);
2355 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2356 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2358 ctx
->max_send_fragment
= larg
;
2359 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2360 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2362 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2363 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2365 ctx
->split_send_fragment
= larg
;
2367 case SSL_CTRL_SET_MAX_PIPELINES
:
2368 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2370 ctx
->max_pipelines
= larg
;
2372 case SSL_CTRL_CERT_FLAGS
:
2373 return (ctx
->cert
->cert_flags
|= larg
);
2374 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2375 return (ctx
->cert
->cert_flags
&= ~larg
);
2376 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2377 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2378 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2379 &ctx
->min_proto_version
);
2380 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2381 return ctx
->min_proto_version
;
2382 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2383 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2384 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2385 &ctx
->max_proto_version
);
2386 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2387 return ctx
->max_proto_version
;
2389 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2393 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2396 case SSL_CTRL_SET_MSG_CALLBACK
:
2397 ctx
->msg_callback
= (void (*)
2398 (int write_p
, int version
, int content_type
,
2399 const void *buf
, size_t len
, SSL
*ssl
,
2404 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2408 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2417 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2418 const SSL_CIPHER
*const *bp
)
2420 if ((*ap
)->id
> (*bp
)->id
)
2422 if ((*ap
)->id
< (*bp
)->id
)
2427 /** return a STACK of the ciphers available for the SSL and in order of
2429 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2432 if (s
->cipher_list
!= NULL
) {
2433 return s
->cipher_list
;
2434 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2435 return s
->ctx
->cipher_list
;
2441 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2443 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2445 return s
->session
->ciphers
;
2448 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2450 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2452 ciphers
= SSL_get_ciphers(s
);
2455 ssl_set_client_disabled(s
);
2456 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2457 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2458 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2460 sk
= sk_SSL_CIPHER_new_null();
2463 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2464 sk_SSL_CIPHER_free(sk
);
2472 /** return a STACK of the ciphers available for the SSL and in order of
2474 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2477 if (s
->cipher_list_by_id
!= NULL
) {
2478 return s
->cipher_list_by_id
;
2479 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2480 return s
->ctx
->cipher_list_by_id
;
2486 /** The old interface to get the same thing as SSL_get_ciphers() */
2487 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2489 const SSL_CIPHER
*c
;
2490 STACK_OF(SSL_CIPHER
) *sk
;
2494 sk
= SSL_get_ciphers(s
);
2495 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2497 c
= sk_SSL_CIPHER_value(sk
, n
);
2503 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2505 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2508 return ctx
->cipher_list
;
2512 /** specify the ciphers to be used by default by the SSL_CTX */
2513 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2515 STACK_OF(SSL_CIPHER
) *sk
;
2517 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2518 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2520 * ssl_create_cipher_list may return an empty stack if it was unable to
2521 * find a cipher matching the given rule string (for example if the rule
2522 * string specifies a cipher which has been disabled). This is not an
2523 * error as far as ssl_create_cipher_list is concerned, and hence
2524 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2528 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2529 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2535 /** specify the ciphers to be used by the SSL */
2536 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2538 STACK_OF(SSL_CIPHER
) *sk
;
2540 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2541 &s
->cipher_list_by_id
, str
, s
->cert
);
2542 /* see comment in SSL_CTX_set_cipher_list */
2545 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2546 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2552 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2555 STACK_OF(SSL_CIPHER
) *sk
;
2556 const SSL_CIPHER
*c
;
2559 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2563 sk
= s
->session
->ciphers
;
2565 if (sk_SSL_CIPHER_num(sk
) == 0)
2568 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2571 c
= sk_SSL_CIPHER_value(sk
, i
);
2572 n
= strlen(c
->name
);
2588 /** return a servername extension value if provided in Client Hello, or NULL.
2589 * So far, only host_name types are defined (RFC 3546).
2592 const char *SSL_get_servername(const SSL
*s
, const int type
)
2594 if (type
!= TLSEXT_NAMETYPE_host_name
)
2597 return s
->session
&& !s
->ext
.hostname
?
2598 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2601 int SSL_get_servername_type(const SSL
*s
)
2604 && (!s
->ext
.hostname
? s
->session
->
2605 ext
.hostname
: s
->ext
.hostname
))
2606 return TLSEXT_NAMETYPE_host_name
;
2611 * SSL_select_next_proto implements the standard protocol selection. It is
2612 * expected that this function is called from the callback set by
2613 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2614 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2615 * not included in the length. A byte string of length 0 is invalid. No byte
2616 * string may be truncated. The current, but experimental algorithm for
2617 * selecting the protocol is: 1) If the server doesn't support NPN then this
2618 * is indicated to the callback. In this case, the client application has to
2619 * abort the connection or have a default application level protocol. 2) If
2620 * the server supports NPN, but advertises an empty list then the client
2621 * selects the first protocol in its list, but indicates via the API that this
2622 * fallback case was enacted. 3) Otherwise, the client finds the first
2623 * protocol in the server's list that it supports and selects this protocol.
2624 * This is because it's assumed that the server has better information about
2625 * which protocol a client should use. 4) If the client doesn't support any
2626 * of the server's advertised protocols, then this is treated the same as
2627 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2628 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2630 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2631 const unsigned char *server
,
2632 unsigned int server_len
,
2633 const unsigned char *client
, unsigned int client_len
)
2636 const unsigned char *result
;
2637 int status
= OPENSSL_NPN_UNSUPPORTED
;
2640 * For each protocol in server preference order, see if we support it.
2642 for (i
= 0; i
< server_len
;) {
2643 for (j
= 0; j
< client_len
;) {
2644 if (server
[i
] == client
[j
] &&
2645 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2646 /* We found a match */
2647 result
= &server
[i
];
2648 status
= OPENSSL_NPN_NEGOTIATED
;
2658 /* There's no overlap between our protocols and the server's list. */
2660 status
= OPENSSL_NPN_NO_OVERLAP
;
2663 *out
= (unsigned char *)result
+ 1;
2664 *outlen
= result
[0];
2668 #ifndef OPENSSL_NO_NEXTPROTONEG
2670 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2671 * client's requested protocol for this connection and returns 0. If the
2672 * client didn't request any protocol, then *data is set to NULL. Note that
2673 * the client can request any protocol it chooses. The value returned from
2674 * this function need not be a member of the list of supported protocols
2675 * provided by the callback.
2677 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2684 *len
= (unsigned int)s
->ext
.npn_len
;
2689 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2690 * a TLS server needs a list of supported protocols for Next Protocol
2691 * Negotiation. The returned list must be in wire format. The list is
2692 * returned by setting |out| to point to it and |outlen| to its length. This
2693 * memory will not be modified, but one should assume that the SSL* keeps a
2694 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2695 * wishes to advertise. Otherwise, no such extension will be included in the
2698 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2699 SSL_CTX_npn_advertised_cb_func cb
,
2702 ctx
->ext
.npn_advertised_cb
= cb
;
2703 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2707 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2708 * client needs to select a protocol from the server's provided list. |out|
2709 * must be set to point to the selected protocol (which may be within |in|).
2710 * The length of the protocol name must be written into |outlen|. The
2711 * server's advertised protocols are provided in |in| and |inlen|. The
2712 * callback can assume that |in| is syntactically valid. The client must
2713 * select a protocol. It is fatal to the connection if this callback returns
2714 * a value other than SSL_TLSEXT_ERR_OK.
2716 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2717 SSL_CTX_npn_select_cb_func cb
,
2720 ctx
->ext
.npn_select_cb
= cb
;
2721 ctx
->ext
.npn_select_cb_arg
= arg
;
2726 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2727 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2728 * length-prefixed strings). Returns 0 on success.
2730 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2731 unsigned int protos_len
)
2733 OPENSSL_free(ctx
->ext
.alpn
);
2734 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2735 if (ctx
->ext
.alpn
== NULL
) {
2736 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2739 ctx
->ext
.alpn_len
= protos_len
;
2745 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2746 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2747 * length-prefixed strings). Returns 0 on success.
2749 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2750 unsigned int protos_len
)
2752 OPENSSL_free(ssl
->ext
.alpn
);
2753 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2754 if (ssl
->ext
.alpn
== NULL
) {
2755 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2758 ssl
->ext
.alpn_len
= protos_len
;
2764 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2765 * called during ClientHello processing in order to select an ALPN protocol
2766 * from the client's list of offered protocols.
2768 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2769 SSL_CTX_alpn_select_cb_func cb
,
2772 ctx
->ext
.alpn_select_cb
= cb
;
2773 ctx
->ext
.alpn_select_cb_arg
= arg
;
2777 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2778 * On return it sets |*data| to point to |*len| bytes of protocol name
2779 * (not including the leading length-prefix byte). If the server didn't
2780 * respond with a negotiated protocol then |*len| will be zero.
2782 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2787 *data
= ssl
->s3
->alpn_selected
;
2791 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2794 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2795 const char *label
, size_t llen
,
2796 const unsigned char *context
, size_t contextlen
,
2799 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2802 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2804 contextlen
, use_context
);
2807 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2809 const unsigned char *session_id
= a
->session_id
;
2811 unsigned char tmp_storage
[4];
2813 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2814 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2815 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2816 session_id
= tmp_storage
;
2820 ((unsigned long)session_id
[0]) |
2821 ((unsigned long)session_id
[1] << 8L) |
2822 ((unsigned long)session_id
[2] << 16L) |
2823 ((unsigned long)session_id
[3] << 24L);
2828 * NB: If this function (or indeed the hash function which uses a sort of
2829 * coarser function than this one) is changed, ensure
2830 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2831 * being able to construct an SSL_SESSION that will collide with any existing
2832 * session with a matching session ID.
2834 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2836 if (a
->ssl_version
!= b
->ssl_version
)
2838 if (a
->session_id_length
!= b
->session_id_length
)
2840 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
2844 * These wrapper functions should remain rather than redeclaring
2845 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2846 * variable. The reason is that the functions aren't static, they're exposed
2850 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2852 SSL_CTX
*ret
= NULL
;
2855 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2859 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2862 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2863 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2866 ret
= OPENSSL_zalloc(sizeof(*ret
));
2871 ret
->min_proto_version
= 0;
2872 ret
->max_proto_version
= 0;
2873 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2874 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2875 /* We take the system default. */
2876 ret
->session_timeout
= meth
->get_timeout();
2877 ret
->references
= 1;
2878 ret
->lock
= CRYPTO_THREAD_lock_new();
2879 if (ret
->lock
== NULL
) {
2880 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2884 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2885 ret
->verify_mode
= SSL_VERIFY_NONE
;
2886 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2889 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2890 if (ret
->sessions
== NULL
)
2892 ret
->cert_store
= X509_STORE_new();
2893 if (ret
->cert_store
== NULL
)
2895 #ifndef OPENSSL_NO_CT
2896 ret
->ctlog_store
= CTLOG_STORE_new();
2897 if (ret
->ctlog_store
== NULL
)
2900 if (!ssl_create_cipher_list(ret
->method
,
2901 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2902 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2903 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2904 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2908 ret
->param
= X509_VERIFY_PARAM_new();
2909 if (ret
->param
== NULL
)
2912 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2913 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2916 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2917 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2921 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2924 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2927 /* No compression for DTLS */
2928 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2929 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2931 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2932 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2934 /* Setup RFC5077 ticket keys */
2935 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2936 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2937 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2938 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2939 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2940 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2941 ret
->options
|= SSL_OP_NO_TICKET
;
2943 if (RAND_bytes(ret
->ext
.cookie_hmac_key
,
2944 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
2947 #ifndef OPENSSL_NO_SRP
2948 if (!SSL_CTX_SRP_CTX_init(ret
))
2951 #ifndef OPENSSL_NO_ENGINE
2952 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2953 # define eng_strx(x) #x
2954 # define eng_str(x) eng_strx(x)
2955 /* Use specific client engine automatically... ignore errors */
2958 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2961 ENGINE_load_builtin_engines();
2962 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2964 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2970 * Default is to connect to non-RI servers. When RI is more widely
2971 * deployed might change this.
2973 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2975 * Disable compression by default to prevent CRIME. Applications can
2976 * re-enable compression by configuring
2977 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2978 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
2979 * middlebox compatibility by default. This may be disabled by default in
2980 * a later OpenSSL version.
2982 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
2984 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2987 * Default max early data is a fully loaded single record. Could be split
2988 * across multiple records in practice
2990 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2994 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3000 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3004 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3007 REF_PRINT_COUNT("SSL_CTX", ctx
);
3008 REF_ASSERT_ISNT(i
< 2);
3009 return ((i
> 1) ? 1 : 0);
3012 void SSL_CTX_free(SSL_CTX
*a
)
3019 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3020 REF_PRINT_COUNT("SSL_CTX", a
);
3023 REF_ASSERT_ISNT(i
< 0);
3025 X509_VERIFY_PARAM_free(a
->param
);
3026 dane_ctx_final(&a
->dane
);
3029 * Free internal session cache. However: the remove_cb() may reference
3030 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3031 * after the sessions were flushed.
3032 * As the ex_data handling routines might also touch the session cache,
3033 * the most secure solution seems to be: empty (flush) the cache, then
3034 * free ex_data, then finally free the cache.
3035 * (See ticket [openssl.org #212].)
3037 if (a
->sessions
!= NULL
)
3038 SSL_CTX_flush_sessions(a
, 0);
3040 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3041 lh_SSL_SESSION_free(a
->sessions
);
3042 X509_STORE_free(a
->cert_store
);
3043 #ifndef OPENSSL_NO_CT
3044 CTLOG_STORE_free(a
->ctlog_store
);
3046 sk_SSL_CIPHER_free(a
->cipher_list
);
3047 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3048 ssl_cert_free(a
->cert
);
3049 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3050 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3051 a
->comp_methods
= NULL
;
3052 #ifndef OPENSSL_NO_SRTP
3053 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3055 #ifndef OPENSSL_NO_SRP
3056 SSL_CTX_SRP_CTX_free(a
);
3058 #ifndef OPENSSL_NO_ENGINE
3059 ENGINE_finish(a
->client_cert_engine
);
3062 #ifndef OPENSSL_NO_EC
3063 OPENSSL_free(a
->ext
.ecpointformats
);
3064 OPENSSL_free(a
->ext
.supportedgroups
);
3066 OPENSSL_free(a
->ext
.alpn
);
3068 CRYPTO_THREAD_lock_free(a
->lock
);
3073 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3075 ctx
->default_passwd_callback
= cb
;
3078 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3080 ctx
->default_passwd_callback_userdata
= u
;
3083 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3085 return ctx
->default_passwd_callback
;
3088 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3090 return ctx
->default_passwd_callback_userdata
;
3093 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3095 s
->default_passwd_callback
= cb
;
3098 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3100 s
->default_passwd_callback_userdata
= u
;
3103 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3105 return s
->default_passwd_callback
;
3108 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3110 return s
->default_passwd_callback_userdata
;
3113 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3114 int (*cb
) (X509_STORE_CTX
*, void *),
3117 ctx
->app_verify_callback
= cb
;
3118 ctx
->app_verify_arg
= arg
;
3121 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3122 int (*cb
) (int, X509_STORE_CTX
*))
3124 ctx
->verify_mode
= mode
;
3125 ctx
->default_verify_callback
= cb
;
3128 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3130 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3133 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3135 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3138 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3140 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3143 void ssl_set_masks(SSL
*s
)
3146 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3147 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3148 unsigned long mask_k
, mask_a
;
3149 #ifndef OPENSSL_NO_EC
3150 int have_ecc_cert
, ecdsa_ok
;
3155 #ifndef OPENSSL_NO_DH
3156 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3161 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3162 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3163 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3164 #ifndef OPENSSL_NO_EC
3165 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3171 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3172 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3175 #ifndef OPENSSL_NO_GOST
3176 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3177 mask_k
|= SSL_kGOST
;
3178 mask_a
|= SSL_aGOST12
;
3180 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3181 mask_k
|= SSL_kGOST
;
3182 mask_a
|= SSL_aGOST12
;
3184 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3185 mask_k
|= SSL_kGOST
;
3186 mask_a
|= SSL_aGOST01
;
3197 * If we only have an RSA-PSS certificate allow RSA authentication
3198 * if TLS 1.2 and peer supports it.
3201 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3202 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3203 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3210 mask_a
|= SSL_aNULL
;
3213 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3214 * depending on the key usage extension.
3216 #ifndef OPENSSL_NO_EC
3217 if (have_ecc_cert
) {
3219 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3220 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3221 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3224 mask_a
|= SSL_aECDSA
;
3226 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3227 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3228 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3229 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3230 mask_a
|= SSL_aECDSA
;
3233 #ifndef OPENSSL_NO_EC
3234 mask_k
|= SSL_kECDHE
;
3237 #ifndef OPENSSL_NO_PSK
3240 if (mask_k
& SSL_kRSA
)
3241 mask_k
|= SSL_kRSAPSK
;
3242 if (mask_k
& SSL_kDHE
)
3243 mask_k
|= SSL_kDHEPSK
;
3244 if (mask_k
& SSL_kECDHE
)
3245 mask_k
|= SSL_kECDHEPSK
;
3248 s
->s3
->tmp
.mask_k
= mask_k
;
3249 s
->s3
->tmp
.mask_a
= mask_a
;
3252 #ifndef OPENSSL_NO_EC
3254 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3256 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3257 /* key usage, if present, must allow signing */
3258 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3259 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3260 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3264 return 1; /* all checks are ok */
3269 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3270 size_t *serverinfo_length
)
3272 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3273 *serverinfo_length
= 0;
3275 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3278 *serverinfo
= cpk
->serverinfo
;
3279 *serverinfo_length
= cpk
->serverinfo_length
;
3283 void ssl_update_cache(SSL
*s
, int mode
)
3288 * If the session_id_length is 0, we are not supposed to cache it, and it
3289 * would be rather hard to do anyway :-)
3291 if (s
->session
->session_id_length
== 0)
3294 i
= s
->session_ctx
->session_cache_mode
;
3296 && (!s
->hit
|| SSL_IS_TLS13(s
))
3297 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3298 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3299 && s
->session_ctx
->new_session_cb
!= NULL
) {
3300 SSL_SESSION_up_ref(s
->session
);
3301 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3302 SSL_SESSION_free(s
->session
);
3305 /* auto flush every 255 connections */
3306 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3308 if (mode
& SSL_SESS_CACHE_CLIENT
)
3309 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3311 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3312 if (CRYPTO_atomic_read(stat
, &val
, s
->session_ctx
->lock
)
3313 && (val
& 0xff) == 0xff)
3314 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3318 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3323 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3328 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3332 if (s
->method
!= meth
) {
3333 const SSL_METHOD
*sm
= s
->method
;
3334 int (*hf
) (SSL
*) = s
->handshake_func
;
3336 if (sm
->version
== meth
->version
)
3341 ret
= s
->method
->ssl_new(s
);
3344 if (hf
== sm
->ssl_connect
)
3345 s
->handshake_func
= meth
->ssl_connect
;
3346 else if (hf
== sm
->ssl_accept
)
3347 s
->handshake_func
= meth
->ssl_accept
;
3352 int SSL_get_error(const SSL
*s
, int i
)
3359 return SSL_ERROR_NONE
;
3362 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3363 * where we do encode the error
3365 if ((l
= ERR_peek_error()) != 0) {
3366 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3367 return SSL_ERROR_SYSCALL
;
3369 return SSL_ERROR_SSL
;
3372 if (SSL_want_read(s
)) {
3373 bio
= SSL_get_rbio(s
);
3374 if (BIO_should_read(bio
))
3375 return SSL_ERROR_WANT_READ
;
3376 else if (BIO_should_write(bio
))
3378 * This one doesn't make too much sense ... We never try to write
3379 * to the rbio, and an application program where rbio and wbio
3380 * are separate couldn't even know what it should wait for.
3381 * However if we ever set s->rwstate incorrectly (so that we have
3382 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3383 * wbio *are* the same, this test works around that bug; so it
3384 * might be safer to keep it.
3386 return SSL_ERROR_WANT_WRITE
;
3387 else if (BIO_should_io_special(bio
)) {
3388 reason
= BIO_get_retry_reason(bio
);
3389 if (reason
== BIO_RR_CONNECT
)
3390 return SSL_ERROR_WANT_CONNECT
;
3391 else if (reason
== BIO_RR_ACCEPT
)
3392 return SSL_ERROR_WANT_ACCEPT
;
3394 return SSL_ERROR_SYSCALL
; /* unknown */
3398 if (SSL_want_write(s
)) {
3399 /* Access wbio directly - in order to use the buffered bio if present */
3401 if (BIO_should_write(bio
))
3402 return SSL_ERROR_WANT_WRITE
;
3403 else if (BIO_should_read(bio
))
3405 * See above (SSL_want_read(s) with BIO_should_write(bio))
3407 return SSL_ERROR_WANT_READ
;
3408 else if (BIO_should_io_special(bio
)) {
3409 reason
= BIO_get_retry_reason(bio
);
3410 if (reason
== BIO_RR_CONNECT
)
3411 return SSL_ERROR_WANT_CONNECT
;
3412 else if (reason
== BIO_RR_ACCEPT
)
3413 return SSL_ERROR_WANT_ACCEPT
;
3415 return SSL_ERROR_SYSCALL
;
3418 if (SSL_want_x509_lookup(s
))
3419 return SSL_ERROR_WANT_X509_LOOKUP
;
3420 if (SSL_want_async(s
))
3421 return SSL_ERROR_WANT_ASYNC
;
3422 if (SSL_want_async_job(s
))
3423 return SSL_ERROR_WANT_ASYNC_JOB
;
3424 if (SSL_want_client_hello_cb(s
))
3425 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3427 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3428 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3429 return SSL_ERROR_ZERO_RETURN
;
3431 return SSL_ERROR_SYSCALL
;
3434 static int ssl_do_handshake_intern(void *vargs
)
3436 struct ssl_async_args
*args
;
3439 args
= (struct ssl_async_args
*)vargs
;
3442 return s
->handshake_func(s
);
3445 int SSL_do_handshake(SSL
*s
)
3449 if (s
->handshake_func
== NULL
) {
3450 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3454 ossl_statem_check_finish_init(s
, -1);
3456 s
->method
->ssl_renegotiate_check(s
, 0);
3458 if (SSL_is_server(s
)) {
3459 /* clear SNI settings at server-side */
3460 OPENSSL_free(s
->ext
.hostname
);
3461 s
->ext
.hostname
= NULL
;
3464 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3465 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3466 struct ssl_async_args args
;
3470 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3472 ret
= s
->handshake_func(s
);
3478 void SSL_set_accept_state(SSL
*s
)
3482 ossl_statem_clear(s
);
3483 s
->handshake_func
= s
->method
->ssl_accept
;
3487 void SSL_set_connect_state(SSL
*s
)
3491 ossl_statem_clear(s
);
3492 s
->handshake_func
= s
->method
->ssl_connect
;
3496 int ssl_undefined_function(SSL
*s
)
3498 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3502 int ssl_undefined_void_function(void)
3504 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3505 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3509 int ssl_undefined_const_function(const SSL
*s
)
3514 const SSL_METHOD
*ssl_bad_method(int ver
)
3516 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3520 const char *ssl_protocol_to_string(int version
)
3524 case TLS1_3_VERSION
:
3527 case TLS1_2_VERSION
:
3530 case TLS1_1_VERSION
:
3545 case DTLS1_2_VERSION
:
3553 const char *SSL_get_version(const SSL
*s
)
3555 return ssl_protocol_to_string(s
->version
);
3558 SSL
*SSL_dup(SSL
*s
)
3560 STACK_OF(X509_NAME
) *sk
;
3565 /* If we're not quiescent, just up_ref! */
3566 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3567 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3572 * Otherwise, copy configuration state, and session if set.
3574 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3577 if (s
->session
!= NULL
) {
3579 * Arranges to share the same session via up_ref. This "copies"
3580 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3582 if (!SSL_copy_session_id(ret
, s
))
3586 * No session has been established yet, so we have to expect that
3587 * s->cert or ret->cert will be changed later -- they should not both
3588 * point to the same object, and thus we can't use
3589 * SSL_copy_session_id.
3591 if (!SSL_set_ssl_method(ret
, s
->method
))
3594 if (s
->cert
!= NULL
) {
3595 ssl_cert_free(ret
->cert
);
3596 ret
->cert
= ssl_cert_dup(s
->cert
);
3597 if (ret
->cert
== NULL
)
3601 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3602 (int)s
->sid_ctx_length
))
3606 if (!ssl_dane_dup(ret
, s
))
3608 ret
->version
= s
->version
;
3609 ret
->options
= s
->options
;
3610 ret
->mode
= s
->mode
;
3611 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3612 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3613 ret
->msg_callback
= s
->msg_callback
;
3614 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3615 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3616 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3617 ret
->generate_session_id
= s
->generate_session_id
;
3619 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3621 /* copy app data, a little dangerous perhaps */
3622 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3625 /* setup rbio, and wbio */
3626 if (s
->rbio
!= NULL
) {
3627 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3630 if (s
->wbio
!= NULL
) {
3631 if (s
->wbio
!= s
->rbio
) {
3632 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3635 BIO_up_ref(ret
->rbio
);
3636 ret
->wbio
= ret
->rbio
;
3640 ret
->server
= s
->server
;
3641 if (s
->handshake_func
) {
3643 SSL_set_accept_state(ret
);
3645 SSL_set_connect_state(ret
);
3647 ret
->shutdown
= s
->shutdown
;
3650 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3651 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3653 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3655 /* dup the cipher_list and cipher_list_by_id stacks */
3656 if (s
->cipher_list
!= NULL
) {
3657 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3660 if (s
->cipher_list_by_id
!= NULL
)
3661 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3665 /* Dup the client_CA list */
3666 if (s
->ca_names
!= NULL
) {
3667 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3670 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3671 xn
= sk_X509_NAME_value(sk
, i
);
3672 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3685 void ssl_clear_cipher_ctx(SSL
*s
)
3687 if (s
->enc_read_ctx
!= NULL
) {
3688 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3689 s
->enc_read_ctx
= NULL
;
3691 if (s
->enc_write_ctx
!= NULL
) {
3692 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3693 s
->enc_write_ctx
= NULL
;
3695 #ifndef OPENSSL_NO_COMP
3696 COMP_CTX_free(s
->expand
);
3698 COMP_CTX_free(s
->compress
);
3703 X509
*SSL_get_certificate(const SSL
*s
)
3705 if (s
->cert
!= NULL
)
3706 return s
->cert
->key
->x509
;
3711 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3713 if (s
->cert
!= NULL
)
3714 return s
->cert
->key
->privatekey
;
3719 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3721 if (ctx
->cert
!= NULL
)
3722 return ctx
->cert
->key
->x509
;
3727 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3729 if (ctx
->cert
!= NULL
)
3730 return ctx
->cert
->key
->privatekey
;
3735 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3737 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3738 return s
->session
->cipher
;
3742 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3744 return s
->s3
->tmp
.new_cipher
;
3747 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3749 #ifndef OPENSSL_NO_COMP
3750 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3756 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3758 #ifndef OPENSSL_NO_COMP
3759 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3765 int ssl_init_wbio_buffer(SSL
*s
)
3769 if (s
->bbio
!= NULL
) {
3770 /* Already buffered. */
3774 bbio
= BIO_new(BIO_f_buffer());
3775 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3777 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3781 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3786 int ssl_free_wbio_buffer(SSL
*s
)
3788 /* callers ensure s is never null */
3789 if (s
->bbio
== NULL
)
3792 s
->wbio
= BIO_pop(s
->wbio
);
3793 if (!ossl_assert(s
->wbio
!= NULL
))
3801 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3803 ctx
->quiet_shutdown
= mode
;
3806 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3808 return ctx
->quiet_shutdown
;
3811 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3813 s
->quiet_shutdown
= mode
;
3816 int SSL_get_quiet_shutdown(const SSL
*s
)
3818 return s
->quiet_shutdown
;
3821 void SSL_set_shutdown(SSL
*s
, int mode
)
3826 int SSL_get_shutdown(const SSL
*s
)
3831 int SSL_version(const SSL
*s
)
3836 int SSL_client_version(const SSL
*s
)
3838 return s
->client_version
;
3841 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3846 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3849 if (ssl
->ctx
== ctx
)
3852 ctx
= ssl
->session_ctx
;
3853 new_cert
= ssl_cert_dup(ctx
->cert
);
3854 if (new_cert
== NULL
) {
3858 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3859 ssl_cert_free(new_cert
);
3863 ssl_cert_free(ssl
->cert
);
3864 ssl
->cert
= new_cert
;
3867 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3868 * so setter APIs must prevent invalid lengths from entering the system.
3870 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3874 * If the session ID context matches that of the parent SSL_CTX,
3875 * inherit it from the new SSL_CTX as well. If however the context does
3876 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3877 * leave it unchanged.
3879 if ((ssl
->ctx
!= NULL
) &&
3880 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3881 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3882 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3883 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3886 SSL_CTX_up_ref(ctx
);
3887 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3893 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3895 return X509_STORE_set_default_paths(ctx
->cert_store
);
3898 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3900 X509_LOOKUP
*lookup
;
3902 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3905 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3907 /* Clear any errors if the default directory does not exist */
3913 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3915 X509_LOOKUP
*lookup
;
3917 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3921 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3923 /* Clear any errors if the default file does not exist */
3929 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3932 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
3935 void SSL_set_info_callback(SSL
*ssl
,
3936 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3938 ssl
->info_callback
= cb
;
3942 * One compiler (Diab DCC) doesn't like argument names in returned function
3945 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3948 return ssl
->info_callback
;
3951 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3953 ssl
->verify_result
= arg
;
3956 long SSL_get_verify_result(const SSL
*ssl
)
3958 return ssl
->verify_result
;
3961 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3964 return sizeof(ssl
->s3
->client_random
);
3965 if (outlen
> sizeof(ssl
->s3
->client_random
))
3966 outlen
= sizeof(ssl
->s3
->client_random
);
3967 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3971 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3974 return sizeof(ssl
->s3
->server_random
);
3975 if (outlen
> sizeof(ssl
->s3
->server_random
))
3976 outlen
= sizeof(ssl
->s3
->server_random
);
3977 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3981 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3982 unsigned char *out
, size_t outlen
)
3985 return session
->master_key_length
;
3986 if (outlen
> session
->master_key_length
)
3987 outlen
= session
->master_key_length
;
3988 memcpy(out
, session
->master_key
, outlen
);
3992 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3995 if (len
> sizeof(sess
->master_key
))
3998 memcpy(sess
->master_key
, in
, len
);
3999 sess
->master_key_length
= len
;
4004 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4006 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4009 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4011 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4014 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4016 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4019 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4021 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4024 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4026 return ctx
->cert_store
;
4029 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4031 X509_STORE_free(ctx
->cert_store
);
4032 ctx
->cert_store
= store
;
4035 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4038 X509_STORE_up_ref(store
);
4039 SSL_CTX_set_cert_store(ctx
, store
);
4042 int SSL_want(const SSL
*s
)
4048 * \brief Set the callback for generating temporary DH keys.
4049 * \param ctx the SSL context.
4050 * \param dh the callback
4053 #ifndef OPENSSL_NO_DH
4054 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4055 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4058 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4061 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4064 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4068 #ifndef OPENSSL_NO_PSK
4069 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4071 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4072 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4075 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4076 if (identity_hint
!= NULL
) {
4077 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4078 if (ctx
->cert
->psk_identity_hint
== NULL
)
4081 ctx
->cert
->psk_identity_hint
= NULL
;
4085 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4090 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4091 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4094 OPENSSL_free(s
->cert
->psk_identity_hint
);
4095 if (identity_hint
!= NULL
) {
4096 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4097 if (s
->cert
->psk_identity_hint
== NULL
)
4100 s
->cert
->psk_identity_hint
= NULL
;
4104 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4106 if (s
== NULL
|| s
->session
== NULL
)
4108 return s
->session
->psk_identity_hint
;
4111 const char *SSL_get_psk_identity(const SSL
*s
)
4113 if (s
== NULL
|| s
->session
== NULL
)
4115 return s
->session
->psk_identity
;
4118 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4120 s
->psk_client_callback
= cb
;
4123 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4125 ctx
->psk_client_callback
= cb
;
4128 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4130 s
->psk_server_callback
= cb
;
4133 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4135 ctx
->psk_server_callback
= cb
;
4139 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4141 s
->psk_find_session_cb
= cb
;
4144 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4145 SSL_psk_find_session_cb_func cb
)
4147 ctx
->psk_find_session_cb
= cb
;
4150 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4152 s
->psk_use_session_cb
= cb
;
4155 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4156 SSL_psk_use_session_cb_func cb
)
4158 ctx
->psk_use_session_cb
= cb
;
4161 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4162 void (*cb
) (int write_p
, int version
,
4163 int content_type
, const void *buf
,
4164 size_t len
, SSL
*ssl
, void *arg
))
4166 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4169 void SSL_set_msg_callback(SSL
*ssl
,
4170 void (*cb
) (int write_p
, int version
,
4171 int content_type
, const void *buf
,
4172 size_t len
, SSL
*ssl
, void *arg
))
4174 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4177 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4178 int (*cb
) (SSL
*ssl
,
4182 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4183 (void (*)(void))cb
);
4186 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4187 int (*cb
) (SSL
*ssl
,
4188 int is_forward_secure
))
4190 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4191 (void (*)(void))cb
);
4194 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4195 size_t (*cb
) (SSL
*ssl
, int type
,
4196 size_t len
, void *arg
))
4198 ctx
->record_padding_cb
= cb
;
4201 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4203 ctx
->record_padding_arg
= arg
;
4206 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4208 return ctx
->record_padding_arg
;
4211 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4213 /* block size of 0 or 1 is basically no padding */
4214 if (block_size
== 1)
4215 ctx
->block_padding
= 0;
4216 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4217 ctx
->block_padding
= block_size
;
4223 void SSL_set_record_padding_callback(SSL
*ssl
,
4224 size_t (*cb
) (SSL
*ssl
, int type
,
4225 size_t len
, void *arg
))
4227 ssl
->record_padding_cb
= cb
;
4230 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4232 ssl
->record_padding_arg
= arg
;
4235 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4237 return ssl
->record_padding_arg
;
4240 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4242 /* block size of 0 or 1 is basically no padding */
4243 if (block_size
== 1)
4244 ssl
->block_padding
= 0;
4245 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4246 ssl
->block_padding
= block_size
;
4253 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4254 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4255 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4256 * Returns the newly allocated ctx;
4259 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4261 ssl_clear_hash_ctx(hash
);
4262 *hash
= EVP_MD_CTX_new();
4263 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4264 EVP_MD_CTX_free(*hash
);
4271 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4274 EVP_MD_CTX_free(*hash
);
4278 /* Retrieve handshake hashes */
4279 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4282 EVP_MD_CTX
*ctx
= NULL
;
4283 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4284 int hashleni
= EVP_MD_CTX_size(hdgst
);
4287 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4288 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4289 ERR_R_INTERNAL_ERROR
);
4293 ctx
= EVP_MD_CTX_new();
4297 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4298 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4299 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4300 ERR_R_INTERNAL_ERROR
);
4304 *hashlen
= hashleni
;
4308 EVP_MD_CTX_free(ctx
);
4312 int SSL_session_reused(SSL
*s
)
4317 int SSL_is_server(const SSL
*s
)
4322 #if OPENSSL_API_COMPAT < 0x10100000L
4323 void SSL_set_debug(SSL
*s
, int debug
)
4325 /* Old function was do-nothing anyway... */
4331 void SSL_set_security_level(SSL
*s
, int level
)
4333 s
->cert
->sec_level
= level
;
4336 int SSL_get_security_level(const SSL
*s
)
4338 return s
->cert
->sec_level
;
4341 void SSL_set_security_callback(SSL
*s
,
4342 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4343 int op
, int bits
, int nid
,
4344 void *other
, void *ex
))
4346 s
->cert
->sec_cb
= cb
;
4349 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4350 const SSL_CTX
*ctx
, int op
,
4351 int bits
, int nid
, void *other
,
4353 return s
->cert
->sec_cb
;
4356 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4358 s
->cert
->sec_ex
= ex
;
4361 void *SSL_get0_security_ex_data(const SSL
*s
)
4363 return s
->cert
->sec_ex
;
4366 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4368 ctx
->cert
->sec_level
= level
;
4371 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4373 return ctx
->cert
->sec_level
;
4376 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4377 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4378 int op
, int bits
, int nid
,
4379 void *other
, void *ex
))
4381 ctx
->cert
->sec_cb
= cb
;
4384 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4390 return ctx
->cert
->sec_cb
;
4393 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4395 ctx
->cert
->sec_ex
= ex
;
4398 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4400 return ctx
->cert
->sec_ex
;
4404 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4405 * can return unsigned long, instead of the generic long return value from the
4406 * control interface.
4408 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4410 return ctx
->options
;
4413 unsigned long SSL_get_options(const SSL
*s
)
4418 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4420 return ctx
->options
|= op
;
4423 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4425 return s
->options
|= op
;
4428 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4430 return ctx
->options
&= ~op
;
4433 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4435 return s
->options
&= ~op
;
4438 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4440 return s
->verified_chain
;
4443 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4445 #ifndef OPENSSL_NO_CT
4448 * Moves SCTs from the |src| stack to the |dst| stack.
4449 * The source of each SCT will be set to |origin|.
4450 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4452 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4454 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4455 sct_source_t origin
)
4461 *dst
= sk_SCT_new_null();
4463 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4468 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4469 if (SCT_set_source(sct
, origin
) != 1)
4472 if (sk_SCT_push(*dst
, sct
) <= 0)
4480 sk_SCT_push(src
, sct
); /* Put the SCT back */
4485 * Look for data collected during ServerHello and parse if found.
4486 * Returns the number of SCTs extracted.
4488 static int ct_extract_tls_extension_scts(SSL
*s
)
4490 int scts_extracted
= 0;
4492 if (s
->ext
.scts
!= NULL
) {
4493 const unsigned char *p
= s
->ext
.scts
;
4494 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4496 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4498 SCT_LIST_free(scts
);
4501 return scts_extracted
;
4505 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4506 * contains an SCT X509 extension. They will be stored in |s->scts|.
4508 * - The number of SCTs extracted, assuming an OCSP response exists.
4509 * - 0 if no OCSP response exists or it contains no SCTs.
4510 * - A negative integer if an error occurs.
4512 static int ct_extract_ocsp_response_scts(SSL
*s
)
4514 # ifndef OPENSSL_NO_OCSP
4515 int scts_extracted
= 0;
4516 const unsigned char *p
;
4517 OCSP_BASICRESP
*br
= NULL
;
4518 OCSP_RESPONSE
*rsp
= NULL
;
4519 STACK_OF(SCT
) *scts
= NULL
;
4522 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4525 p
= s
->ext
.ocsp
.resp
;
4526 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4530 br
= OCSP_response_get1_basic(rsp
);
4534 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4535 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4541 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4543 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4544 if (scts_extracted
< 0)
4548 SCT_LIST_free(scts
);
4549 OCSP_BASICRESP_free(br
);
4550 OCSP_RESPONSE_free(rsp
);
4551 return scts_extracted
;
4553 /* Behave as if no OCSP response exists */
4559 * Attempts to extract SCTs from the peer certificate.
4560 * Return the number of SCTs extracted, or a negative integer if an error
4563 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4565 int scts_extracted
= 0;
4566 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4569 STACK_OF(SCT
) *scts
=
4570 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4573 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4575 SCT_LIST_free(scts
);
4578 return scts_extracted
;
4582 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4583 * response (if it exists) and X509v3 extensions in the certificate.
4584 * Returns NULL if an error occurs.
4586 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4588 if (!s
->scts_parsed
) {
4589 if (ct_extract_tls_extension_scts(s
) < 0 ||
4590 ct_extract_ocsp_response_scts(s
) < 0 ||
4591 ct_extract_x509v3_extension_scts(s
) < 0)
4601 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4602 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4607 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4608 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4610 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4613 for (i
= 0; i
< count
; ++i
) {
4614 SCT
*sct
= sk_SCT_value(scts
, i
);
4615 int status
= SCT_get_validation_status(sct
);
4617 if (status
== SCT_VALIDATION_STATUS_VALID
)
4620 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4624 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4628 * Since code exists that uses the custom extension handler for CT, look
4629 * for this and throw an error if they have already registered to use CT.
4631 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4632 TLSEXT_TYPE_signed_certificate_timestamp
))
4634 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4635 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4639 if (callback
!= NULL
) {
4641 * If we are validating CT, then we MUST accept SCTs served via OCSP
4643 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4647 s
->ct_validation_callback
= callback
;
4648 s
->ct_validation_callback_arg
= arg
;
4653 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4654 ssl_ct_validation_cb callback
, void *arg
)
4657 * Since code exists that uses the custom extension handler for CT, look for
4658 * this and throw an error if they have already registered to use CT.
4660 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4661 TLSEXT_TYPE_signed_certificate_timestamp
))
4663 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4664 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4668 ctx
->ct_validation_callback
= callback
;
4669 ctx
->ct_validation_callback_arg
= arg
;
4673 int SSL_ct_is_enabled(const SSL
*s
)
4675 return s
->ct_validation_callback
!= NULL
;
4678 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4680 return ctx
->ct_validation_callback
!= NULL
;
4683 int ssl_validate_ct(SSL
*s
)
4686 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4688 SSL_DANE
*dane
= &s
->dane
;
4689 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4690 const STACK_OF(SCT
) *scts
;
4693 * If no callback is set, the peer is anonymous, or its chain is invalid,
4694 * skip SCT validation - just return success. Applications that continue
4695 * handshakes without certificates, with unverified chains, or pinned leaf
4696 * certificates are outside the scope of the WebPKI and CT.
4698 * The above exclusions notwithstanding the vast majority of peers will
4699 * have rather ordinary certificate chains validated by typical
4700 * applications that perform certificate verification and therefore will
4701 * process SCTs when enabled.
4703 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4704 s
->verify_result
!= X509_V_OK
||
4705 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4709 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4710 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4712 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4713 switch (dane
->mtlsa
->usage
) {
4714 case DANETLS_USAGE_DANE_TA
:
4715 case DANETLS_USAGE_DANE_EE
:
4720 ctx
= CT_POLICY_EVAL_CTX_new();
4722 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
4723 ERR_R_MALLOC_FAILURE
);
4727 issuer
= sk_X509_value(s
->verified_chain
, 1);
4728 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4729 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4730 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4731 CT_POLICY_EVAL_CTX_set_time(
4732 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4734 scts
= SSL_get0_peer_scts(s
);
4737 * This function returns success (> 0) only when all the SCTs are valid, 0
4738 * when some are invalid, and < 0 on various internal errors (out of
4739 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4740 * reason to abort the handshake, that decision is up to the callback.
4741 * Therefore, we error out only in the unexpected case that the return
4742 * value is negative.
4744 * XXX: One might well argue that the return value of this function is an
4745 * unfortunate design choice. Its job is only to determine the validation
4746 * status of each of the provided SCTs. So long as it correctly separates
4747 * the wheat from the chaff it should return success. Failure in this case
4748 * ought to correspond to an inability to carry out its duties.
4750 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4751 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4752 SSL_R_SCT_VERIFICATION_FAILED
);
4756 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4758 ret
= 0; /* This function returns 0 on failure */
4760 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4761 SSL_R_CALLBACK_FAILED
);
4764 CT_POLICY_EVAL_CTX_free(ctx
);
4766 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4767 * failure return code here. Also the application may wish the complete
4768 * the handshake, and then disconnect cleanly at a higher layer, after
4769 * checking the verification status of the completed connection.
4771 * We therefore force a certificate verification failure which will be
4772 * visible via SSL_get_verify_result() and cached as part of any resumed
4775 * Note: the permissive callback is for information gathering only, always
4776 * returns success, and does not affect verification status. Only the
4777 * strict callback or a custom application-specified callback can trigger
4778 * connection failure or record a verification error.
4781 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4785 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4787 switch (validation_mode
) {
4789 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4791 case SSL_CT_VALIDATION_PERMISSIVE
:
4792 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4793 case SSL_CT_VALIDATION_STRICT
:
4794 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4798 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4800 switch (validation_mode
) {
4802 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4804 case SSL_CT_VALIDATION_PERMISSIVE
:
4805 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4806 case SSL_CT_VALIDATION_STRICT
:
4807 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4811 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4813 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4816 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4818 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4821 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4823 CTLOG_STORE_free(ctx
->ctlog_store
);
4824 ctx
->ctlog_store
= logs
;
4827 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4829 return ctx
->ctlog_store
;
4832 #endif /* OPENSSL_NO_CT */
4834 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4837 c
->client_hello_cb
= cb
;
4838 c
->client_hello_cb_arg
= arg
;
4841 int SSL_client_hello_isv2(SSL
*s
)
4843 if (s
->clienthello
== NULL
)
4845 return s
->clienthello
->isv2
;
4848 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4850 if (s
->clienthello
== NULL
)
4852 return s
->clienthello
->legacy_version
;
4855 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4857 if (s
->clienthello
== NULL
)
4860 *out
= s
->clienthello
->random
;
4861 return SSL3_RANDOM_SIZE
;
4864 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4866 if (s
->clienthello
== NULL
)
4869 *out
= s
->clienthello
->session_id
;
4870 return s
->clienthello
->session_id_len
;
4873 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4875 if (s
->clienthello
== NULL
)
4878 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4879 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4882 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4884 if (s
->clienthello
== NULL
)
4887 *out
= s
->clienthello
->compressions
;
4888 return s
->clienthello
->compressions_len
;
4891 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4897 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4899 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4900 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4904 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4905 if (present
== NULL
)
4907 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4908 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4910 if (ext
->received_order
>= num
)
4912 present
[ext
->received_order
] = ext
->type
;
4919 OPENSSL_free(present
);
4923 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4929 if (s
->clienthello
== NULL
)
4931 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4932 r
= s
->clienthello
->pre_proc_exts
+ i
;
4933 if (r
->present
&& r
->type
== type
) {
4935 *out
= PACKET_data(&r
->data
);
4937 *outlen
= PACKET_remaining(&r
->data
);
4944 int SSL_free_buffers(SSL
*ssl
)
4946 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4948 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4951 RECORD_LAYER_release(rl
);
4955 int SSL_alloc_buffers(SSL
*ssl
)
4957 return ssl3_setup_buffers(ssl
);
4960 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4962 ctx
->keylog_callback
= cb
;
4965 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4967 return ctx
->keylog_callback
;
4970 static int nss_keylog_int(const char *prefix
,
4972 const uint8_t *parameter_1
,
4973 size_t parameter_1_len
,
4974 const uint8_t *parameter_2
,
4975 size_t parameter_2_len
)
4978 char *cursor
= NULL
;
4983 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4986 * Our output buffer will contain the following strings, rendered with
4987 * space characters in between, terminated by a NULL character: first the
4988 * prefix, then the first parameter, then the second parameter. The
4989 * meaning of each parameter depends on the specific key material being
4990 * logged. Note that the first and second parameters are encoded in
4991 * hexadecimal, so we need a buffer that is twice their lengths.
4993 prefix_len
= strlen(prefix
);
4994 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4995 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4996 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
4997 ERR_R_MALLOC_FAILURE
);
5001 strcpy(cursor
, prefix
);
5002 cursor
+= prefix_len
;
5005 for (i
= 0; i
< parameter_1_len
; i
++) {
5006 sprintf(cursor
, "%02x", parameter_1
[i
]);
5011 for (i
= 0; i
< parameter_2_len
; i
++) {
5012 sprintf(cursor
, "%02x", parameter_2
[i
]);
5017 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5023 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5024 const uint8_t *encrypted_premaster
,
5025 size_t encrypted_premaster_len
,
5026 const uint8_t *premaster
,
5027 size_t premaster_len
)
5029 if (encrypted_premaster_len
< 8) {
5030 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5031 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5035 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5036 return nss_keylog_int("RSA",
5038 encrypted_premaster
,
5044 int ssl_log_secret(SSL
*ssl
,
5046 const uint8_t *secret
,
5049 return nss_keylog_int(label
,
5051 ssl
->s3
->client_random
,
5057 #define SSLV2_CIPHER_LEN 3
5059 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5063 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5065 if (PACKET_remaining(cipher_suites
) == 0) {
5066 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5067 SSL_R_NO_CIPHERS_SPECIFIED
);
5071 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5072 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5073 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5077 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
5078 s
->s3
->tmp
.ciphers_raw
= NULL
;
5079 s
->s3
->tmp
.ciphers_rawlen
= 0;
5082 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5083 PACKET sslv2ciphers
= *cipher_suites
;
5084 unsigned int leadbyte
;
5088 * We store the raw ciphers list in SSLv3+ format so we need to do some
5089 * preprocessing to convert the list first. If there are any SSLv2 only
5090 * ciphersuites with a non-zero leading byte then we are going to
5091 * slightly over allocate because we won't store those. But that isn't a
5094 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5095 s
->s3
->tmp
.ciphers_raw
= raw
;
5097 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5098 ERR_R_MALLOC_FAILURE
);
5101 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
5102 PACKET_remaining(&sslv2ciphers
) > 0;
5103 raw
+= TLS_CIPHER_LEN
) {
5104 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5106 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5109 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5110 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5112 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
5113 s
->s3
->tmp
.ciphers_raw
= NULL
;
5114 s
->s3
->tmp
.ciphers_rawlen
= 0;
5118 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5120 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5121 &s
->s3
->tmp
.ciphers_rawlen
)) {
5122 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5123 ERR_R_INTERNAL_ERROR
);
5129 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5130 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5131 STACK_OF(SSL_CIPHER
) **scsvs
)
5135 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5137 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5140 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5141 STACK_OF(SSL_CIPHER
) **skp
,
5142 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5143 int sslv2format
, int fatal
)
5145 const SSL_CIPHER
*c
;
5146 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5147 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5149 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5150 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5152 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5154 if (PACKET_remaining(cipher_suites
) == 0) {
5156 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5157 SSL_R_NO_CIPHERS_SPECIFIED
);
5159 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5163 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5165 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5166 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5168 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5169 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5173 sk
= sk_SSL_CIPHER_new_null();
5174 scsvs
= sk_SSL_CIPHER_new_null();
5175 if (sk
== NULL
|| scsvs
== NULL
) {
5177 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5178 ERR_R_MALLOC_FAILURE
);
5180 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5184 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5186 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5187 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5188 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5190 if (sslv2format
&& cipher
[0] != '\0')
5193 /* For SSLv2-compat, ignore leading 0-byte. */
5194 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5196 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5197 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5199 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5200 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5202 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5207 if (PACKET_remaining(cipher_suites
) > 0) {
5209 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5212 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5219 sk_SSL_CIPHER_free(sk
);
5220 if (scsvs_out
!= NULL
)
5223 sk_SSL_CIPHER_free(scsvs
);
5226 sk_SSL_CIPHER_free(sk
);
5227 sk_SSL_CIPHER_free(scsvs
);
5231 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5233 ctx
->max_early_data
= max_early_data
;
5238 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5240 return ctx
->max_early_data
;
5243 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5245 s
->max_early_data
= max_early_data
;
5250 uint32_t SSL_get_max_early_data(const SSL
*s
)
5252 return s
->max_early_data
;
5255 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5257 if (s
->drbg
!= NULL
) {
5259 * Currently, it's the duty of the caller to serialize the generate
5260 * requests to the DRBG. So formally we have to check whether
5261 * s->drbg->lock != NULL and take the lock if this is the case.
5262 * However, this DRBG is unique to a given SSL object, and we already
5263 * require that SSL objects are only accessed by a single thread at
5264 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5265 * no risk that this DRBG is accessed by a child DRBG in parallel
5266 * for reseeding. As such, we can rely on the application's
5267 * serialization of SSL accesses for the needed concurrency protection
5270 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5272 return RAND_bytes(rnd
, (int)size
);
5275 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5277 /* Return any active Max Fragment Len extension */
5278 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5279 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5281 /* return current SSL connection setting */
5282 return ssl
->max_send_fragment
;
5285 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5287 /* Return a value regarding an active Max Fragment Len extension */
5288 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5289 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5290 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5292 /* else limit |split_send_fragment| to current |max_send_fragment| */
5293 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5294 return ssl
->max_send_fragment
;
5296 /* return current SSL connection setting */
5297 return ssl
->split_send_fragment
;
5300 int SSL_stateless(SSL
*s
)
5304 /* Ensure there is no state left over from a previous invocation */
5310 s
->s3
->flags
|= TLS1_FLAGS_STATELESS
;
5311 ret
= SSL_accept(s
);
5312 s
->s3
->flags
&= ~TLS1_FLAGS_STATELESS
;
5314 if (ret
> 0 && s
->ext
.cookieok
)