2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/rand.h>
17 #include <openssl/ocsp.h>
18 #include <openssl/dh.h>
19 #include <openssl/engine.h>
20 #include <openssl/async.h>
21 #include <openssl/ct.h>
22 #include "internal/cryptlib.h"
23 #include "internal/rand.h"
24 #include "internal/refcount.h"
26 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
28 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
30 * evil casts, but these functions are only called if there's a library
33 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
34 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
35 ssl_undefined_function
,
36 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
37 ssl_undefined_function
,
38 (int (*)(SSL
*, int))ssl_undefined_function
,
39 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
40 ssl_undefined_function
,
41 NULL
, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL
, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function
,
46 (int (*)(SSL
*, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context
))ssl_undefined_function
,
51 struct ssl_async_args
{
55 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
57 int (*func_read
) (SSL
*, void *, size_t, size_t *);
58 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
59 int (*func_other
) (SSL
*);
69 DANETLS_MATCHING_FULL
, 0, NID_undef
72 DANETLS_MATCHING_2256
, 1, NID_sha256
75 DANETLS_MATCHING_2512
, 2, NID_sha512
79 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
83 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
84 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
87 if (dctx
->mdevp
!= NULL
)
90 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
91 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
93 if (mdord
== NULL
|| mdevp
== NULL
) {
96 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
100 /* Install default entries */
101 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
104 if (dane_mds
[i
].nid
== NID_undef
||
105 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
107 mdevp
[dane_mds
[i
].mtype
] = md
;
108 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
118 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
120 OPENSSL_free(dctx
->mdevp
);
123 OPENSSL_free(dctx
->mdord
);
128 static void tlsa_free(danetls_record
*t
)
132 OPENSSL_free(t
->data
);
133 EVP_PKEY_free(t
->spki
);
137 static void dane_final(SSL_DANE
*dane
)
139 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
142 sk_X509_pop_free(dane
->certs
, X509_free
);
145 X509_free(dane
->mcert
);
153 * dane_copy - Copy dane configuration, sans verification state.
155 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
160 if (!DANETLS_ENABLED(&from
->dane
))
163 num
= sk_danetls_record_num(from
->dane
.trecs
);
164 dane_final(&to
->dane
);
165 to
->dane
.flags
= from
->dane
.flags
;
166 to
->dane
.dctx
= &to
->ctx
->dane
;
167 to
->dane
.trecs
= sk_danetls_record_new_reserve(NULL
, num
);
169 if (to
->dane
.trecs
== NULL
) {
170 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
174 for (i
= 0; i
< num
; ++i
) {
175 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
177 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
178 t
->data
, t
->dlen
) <= 0)
184 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
185 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
189 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
190 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
194 if (mtype
> dctx
->mdmax
) {
195 const EVP_MD
**mdevp
;
197 int n
= ((int)mtype
) + 1;
199 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
201 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
206 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
208 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
213 /* Zero-fill any gaps */
214 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
222 dctx
->mdevp
[mtype
] = md
;
223 /* Coerce ordinal of disabled matching types to 0 */
224 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
229 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
231 if (mtype
> dane
->dctx
->mdmax
)
233 return dane
->dctx
->mdevp
[mtype
];
236 static int dane_tlsa_add(SSL_DANE
*dane
,
239 uint8_t mtype
, unsigned char *data
, size_t dlen
)
242 const EVP_MD
*md
= NULL
;
243 int ilen
= (int)dlen
;
247 if (dane
->trecs
== NULL
) {
248 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
252 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
253 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
257 if (usage
> DANETLS_USAGE_LAST
) {
258 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
262 if (selector
> DANETLS_SELECTOR_LAST
) {
263 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
267 if (mtype
!= DANETLS_MATCHING_FULL
) {
268 md
= tlsa_md_get(dane
, mtype
);
270 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
275 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
276 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
280 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
284 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
285 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
290 t
->selector
= selector
;
292 t
->data
= OPENSSL_malloc(dlen
);
293 if (t
->data
== NULL
) {
295 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
298 memcpy(t
->data
, data
, dlen
);
301 /* Validate and cache full certificate or public key */
302 if (mtype
== DANETLS_MATCHING_FULL
) {
303 const unsigned char *p
= data
;
305 EVP_PKEY
*pkey
= NULL
;
308 case DANETLS_SELECTOR_CERT
:
309 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
310 dlen
!= (size_t)(p
- data
)) {
312 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
315 if (X509_get0_pubkey(cert
) == NULL
) {
317 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
321 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
327 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
328 * records that contain full certificates of trust-anchors that are
329 * not present in the wire chain. For usage PKIX-TA(0), we augment
330 * the chain with untrusted Full(0) certificates from DNS, in case
331 * they are missing from the chain.
333 if ((dane
->certs
== NULL
&&
334 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
335 !sk_X509_push(dane
->certs
, cert
)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
343 case DANETLS_SELECTOR_SPKI
:
344 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
345 dlen
!= (size_t)(p
- data
)) {
347 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
352 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
353 * records that contain full bare keys of trust-anchors that are
354 * not present in the wire chain.
356 if (usage
== DANETLS_USAGE_DANE_TA
)
365 * Find the right insertion point for the new record.
367 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
368 * they can be processed first, as they require no chain building, and no
369 * expiration or hostname checks. Because DANE-EE(3) is numerically
370 * largest, this is accomplished via descending sort by "usage".
372 * We also sort in descending order by matching ordinal to simplify
373 * the implementation of digest agility in the verification code.
375 * The choice of order for the selector is not significant, so we
376 * use the same descending order for consistency.
378 num
= sk_danetls_record_num(dane
->trecs
);
379 for (i
= 0; i
< num
; ++i
) {
380 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
382 if (rec
->usage
> usage
)
384 if (rec
->usage
< usage
)
386 if (rec
->selector
> selector
)
388 if (rec
->selector
< selector
)
390 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
395 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
397 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
400 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
406 * Return 0 if there is only one version configured and it was disabled
407 * at configure time. Return 1 otherwise.
409 static int ssl_check_allowed_versions(int min_version
, int max_version
)
411 int minisdtls
= 0, maxisdtls
= 0;
413 /* Figure out if we're doing DTLS versions or TLS versions */
414 if (min_version
== DTLS1_BAD_VER
415 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
417 if (max_version
== DTLS1_BAD_VER
418 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
420 /* A wildcard version of 0 could be DTLS or TLS. */
421 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
422 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
423 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
427 if (minisdtls
|| maxisdtls
) {
428 /* Do DTLS version checks. */
429 if (min_version
== 0)
430 /* Ignore DTLS1_BAD_VER */
431 min_version
= DTLS1_VERSION
;
432 if (max_version
== 0)
433 max_version
= DTLS1_2_VERSION
;
434 #ifdef OPENSSL_NO_DTLS1_2
435 if (max_version
== DTLS1_2_VERSION
)
436 max_version
= DTLS1_VERSION
;
438 #ifdef OPENSSL_NO_DTLS1
439 if (min_version
== DTLS1_VERSION
)
440 min_version
= DTLS1_2_VERSION
;
442 /* Done massaging versions; do the check. */
444 #ifdef OPENSSL_NO_DTLS1
445 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
446 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
448 #ifdef OPENSSL_NO_DTLS1_2
449 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
450 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
455 /* Regular TLS version checks. */
456 if (min_version
== 0)
457 min_version
= SSL3_VERSION
;
458 if (max_version
== 0)
459 max_version
= TLS1_3_VERSION
;
460 #ifdef OPENSSL_NO_TLS1_3
461 if (max_version
== TLS1_3_VERSION
)
462 max_version
= TLS1_2_VERSION
;
464 #ifdef OPENSSL_NO_TLS1_2
465 if (max_version
== TLS1_2_VERSION
)
466 max_version
= TLS1_1_VERSION
;
468 #ifdef OPENSSL_NO_TLS1_1
469 if (max_version
== TLS1_1_VERSION
)
470 max_version
= TLS1_VERSION
;
472 #ifdef OPENSSL_NO_TLS1
473 if (max_version
== TLS1_VERSION
)
474 max_version
= SSL3_VERSION
;
476 #ifdef OPENSSL_NO_SSL3
477 if (min_version
== SSL3_VERSION
)
478 min_version
= TLS1_VERSION
;
480 #ifdef OPENSSL_NO_TLS1
481 if (min_version
== TLS1_VERSION
)
482 min_version
= TLS1_1_VERSION
;
484 #ifdef OPENSSL_NO_TLS1_1
485 if (min_version
== TLS1_1_VERSION
)
486 min_version
= TLS1_2_VERSION
;
488 #ifdef OPENSSL_NO_TLS1_2
489 if (min_version
== TLS1_2_VERSION
)
490 min_version
= TLS1_3_VERSION
;
492 /* Done massaging versions; do the check. */
494 #ifdef OPENSSL_NO_SSL3
495 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
497 #ifdef OPENSSL_NO_TLS1
498 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
500 #ifdef OPENSSL_NO_TLS1_1
501 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
503 #ifdef OPENSSL_NO_TLS1_2
504 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
506 #ifdef OPENSSL_NO_TLS1_3
507 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
515 static void clear_ciphers(SSL
*s
)
517 /* clear the current cipher */
518 ssl_clear_cipher_ctx(s
);
519 ssl_clear_hash_ctx(&s
->read_hash
);
520 ssl_clear_hash_ctx(&s
->write_hash
);
523 int SSL_clear(SSL
*s
)
525 if (s
->method
== NULL
) {
526 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
530 if (ssl_clear_bad_session(s
)) {
531 SSL_SESSION_free(s
->session
);
534 SSL_SESSION_free(s
->psksession
);
535 s
->psksession
= NULL
;
536 OPENSSL_free(s
->psksession_id
);
537 s
->psksession_id
= NULL
;
538 s
->psksession_id_len
= 0;
544 if (s
->renegotiate
) {
545 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
549 ossl_statem_clear(s
);
551 s
->version
= s
->method
->version
;
552 s
->client_version
= s
->version
;
553 s
->rwstate
= SSL_NOTHING
;
555 BUF_MEM_free(s
->init_buf
);
560 s
->key_update
= SSL_KEY_UPDATE_NONE
;
562 /* Reset DANE verification result state */
565 X509_free(s
->dane
.mcert
);
566 s
->dane
.mcert
= NULL
;
567 s
->dane
.mtlsa
= NULL
;
569 /* Clear the verification result peername */
570 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
573 * Check to see if we were changed into a different method, if so, revert
576 if (s
->method
!= s
->ctx
->method
) {
577 s
->method
->ssl_free(s
);
578 s
->method
= s
->ctx
->method
;
579 if (!s
->method
->ssl_new(s
))
582 if (!s
->method
->ssl_clear(s
))
586 RECORD_LAYER_clear(&s
->rlayer
);
591 /** Used to change an SSL_CTXs default SSL method type */
592 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
594 STACK_OF(SSL_CIPHER
) *sk
;
598 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
599 &(ctx
->cipher_list_by_id
),
600 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
601 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
602 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
608 SSL
*SSL_new(SSL_CTX
*ctx
)
613 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
616 if (ctx
->method
== NULL
) {
617 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
621 s
= OPENSSL_zalloc(sizeof(*s
));
626 s
->lock
= CRYPTO_THREAD_lock_new();
627 if (s
->lock
== NULL
) {
634 * If not using the standard RAND (say for fuzzing), then don't use a
637 if (RAND_get_rand_method() == RAND_OpenSSL()) {
639 RAND_DRBG_new(RAND_DRBG_NID
, RAND_DRBG_FLAG_CTR_USE_DF
,
640 RAND_DRBG_get0_global());
642 || RAND_DRBG_instantiate(s
->drbg
,
643 (const unsigned char *) SSL_version_str
,
644 sizeof(SSL_version_str
) - 1) == 0)
648 RECORD_LAYER_init(&s
->rlayer
, s
);
650 s
->options
= ctx
->options
;
651 s
->dane
.flags
= ctx
->dane
.flags
;
652 s
->min_proto_version
= ctx
->min_proto_version
;
653 s
->max_proto_version
= ctx
->max_proto_version
;
655 s
->max_cert_list
= ctx
->max_cert_list
;
656 s
->max_early_data
= ctx
->max_early_data
;
659 * Earlier library versions used to copy the pointer to the CERT, not
660 * its contents; only when setting new parameters for the per-SSL
661 * copy, ssl_cert_new would be called (and the direct reference to
662 * the per-SSL_CTX settings would be lost, but those still were
663 * indirectly accessed for various purposes, and for that reason they
664 * used to be known as s->ctx->default_cert). Now we don't look at the
665 * SSL_CTX's CERT after having duplicated it once.
667 s
->cert
= ssl_cert_dup(ctx
->cert
);
671 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
672 s
->msg_callback
= ctx
->msg_callback
;
673 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
674 s
->verify_mode
= ctx
->verify_mode
;
675 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
676 s
->record_padding_cb
= ctx
->record_padding_cb
;
677 s
->record_padding_arg
= ctx
->record_padding_arg
;
678 s
->block_padding
= ctx
->block_padding
;
679 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
680 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
682 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
683 s
->verify_callback
= ctx
->default_verify_callback
;
684 s
->generate_session_id
= ctx
->generate_session_id
;
686 s
->param
= X509_VERIFY_PARAM_new();
687 if (s
->param
== NULL
)
689 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
690 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
692 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
693 s
->max_send_fragment
= ctx
->max_send_fragment
;
694 s
->split_send_fragment
= ctx
->split_send_fragment
;
695 s
->max_pipelines
= ctx
->max_pipelines
;
696 if (s
->max_pipelines
> 1)
697 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
698 if (ctx
->default_read_buf_len
> 0)
699 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
704 s
->ext
.debug_arg
= NULL
;
705 s
->ext
.ticket_expected
= 0;
706 s
->ext
.status_type
= ctx
->ext
.status_type
;
707 s
->ext
.status_expected
= 0;
708 s
->ext
.ocsp
.ids
= NULL
;
709 s
->ext
.ocsp
.exts
= NULL
;
710 s
->ext
.ocsp
.resp
= NULL
;
711 s
->ext
.ocsp
.resp_len
= 0;
713 s
->session_ctx
= ctx
;
714 #ifndef OPENSSL_NO_EC
715 if (ctx
->ext
.ecpointformats
) {
716 s
->ext
.ecpointformats
=
717 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
718 ctx
->ext
.ecpointformats_len
);
719 if (!s
->ext
.ecpointformats
)
721 s
->ext
.ecpointformats_len
=
722 ctx
->ext
.ecpointformats_len
;
724 if (ctx
->ext
.supportedgroups
) {
725 s
->ext
.supportedgroups
=
726 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
727 ctx
->ext
.supportedgroups_len
728 * sizeof(*ctx
->ext
.supportedgroups
));
729 if (!s
->ext
.supportedgroups
)
731 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
734 #ifndef OPENSSL_NO_NEXTPROTONEG
738 if (s
->ctx
->ext
.alpn
) {
739 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
740 if (s
->ext
.alpn
== NULL
)
742 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
743 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
746 s
->verified_chain
= NULL
;
747 s
->verify_result
= X509_V_OK
;
749 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
750 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
752 s
->method
= ctx
->method
;
754 s
->key_update
= SSL_KEY_UPDATE_NONE
;
756 if (!s
->method
->ssl_new(s
))
759 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
764 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
767 #ifndef OPENSSL_NO_PSK
768 s
->psk_client_callback
= ctx
->psk_client_callback
;
769 s
->psk_server_callback
= ctx
->psk_server_callback
;
771 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
772 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
776 #ifndef OPENSSL_NO_CT
777 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
778 ctx
->ct_validation_callback_arg
))
785 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
789 int SSL_is_dtls(const SSL
*s
)
791 return SSL_IS_DTLS(s
) ? 1 : 0;
794 int SSL_up_ref(SSL
*s
)
798 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
801 REF_PRINT_COUNT("SSL", s
);
802 REF_ASSERT_ISNT(i
< 2);
803 return ((i
> 1) ? 1 : 0);
806 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
807 unsigned int sid_ctx_len
)
809 if (sid_ctx_len
> sizeof(ctx
->sid_ctx
)) {
810 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
811 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
814 ctx
->sid_ctx_length
= sid_ctx_len
;
815 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
820 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
821 unsigned int sid_ctx_len
)
823 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
824 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
825 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
828 ssl
->sid_ctx_length
= sid_ctx_len
;
829 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
834 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
836 CRYPTO_THREAD_write_lock(ctx
->lock
);
837 ctx
->generate_session_id
= cb
;
838 CRYPTO_THREAD_unlock(ctx
->lock
);
842 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
844 CRYPTO_THREAD_write_lock(ssl
->lock
);
845 ssl
->generate_session_id
= cb
;
846 CRYPTO_THREAD_unlock(ssl
->lock
);
850 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
854 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
855 * we can "construct" a session to give us the desired check - i.e. to
856 * find if there's a session in the hash table that would conflict with
857 * any new session built out of this id/id_len and the ssl_version in use
862 if (id_len
> sizeof(r
.session_id
))
865 r
.ssl_version
= ssl
->version
;
866 r
.session_id_length
= id_len
;
867 memcpy(r
.session_id
, id
, id_len
);
869 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
870 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
871 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
875 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
877 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
880 int SSL_set_purpose(SSL
*s
, int purpose
)
882 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
885 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
887 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
890 int SSL_set_trust(SSL
*s
, int trust
)
892 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
895 int SSL_set1_host(SSL
*s
, const char *hostname
)
897 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
900 int SSL_add1_host(SSL
*s
, const char *hostname
)
902 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
905 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
907 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
910 const char *SSL_get0_peername(SSL
*s
)
912 return X509_VERIFY_PARAM_get0_peername(s
->param
);
915 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
917 return dane_ctx_enable(&ctx
->dane
);
920 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
922 unsigned long orig
= ctx
->dane
.flags
;
924 ctx
->dane
.flags
|= flags
;
928 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
930 unsigned long orig
= ctx
->dane
.flags
;
932 ctx
->dane
.flags
&= ~flags
;
936 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
938 SSL_DANE
*dane
= &s
->dane
;
940 if (s
->ctx
->dane
.mdmax
== 0) {
941 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
944 if (dane
->trecs
!= NULL
) {
945 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
950 * Default SNI name. This rejects empty names, while set1_host below
951 * accepts them and disables host name checks. To avoid side-effects with
952 * invalid input, set the SNI name first.
954 if (s
->ext
.hostname
== NULL
) {
955 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
956 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
961 /* Primary RFC6125 reference identifier */
962 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
963 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
969 dane
->dctx
= &s
->ctx
->dane
;
970 dane
->trecs
= sk_danetls_record_new_null();
972 if (dane
->trecs
== NULL
) {
973 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
979 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
981 unsigned long orig
= ssl
->dane
.flags
;
983 ssl
->dane
.flags
|= flags
;
987 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
989 unsigned long orig
= ssl
->dane
.flags
;
991 ssl
->dane
.flags
&= ~flags
;
995 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
997 SSL_DANE
*dane
= &s
->dane
;
999 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1003 *mcert
= dane
->mcert
;
1005 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1010 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1011 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1013 SSL_DANE
*dane
= &s
->dane
;
1015 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1019 *usage
= dane
->mtlsa
->usage
;
1021 *selector
= dane
->mtlsa
->selector
;
1023 *mtype
= dane
->mtlsa
->mtype
;
1025 *data
= dane
->mtlsa
->data
;
1027 *dlen
= dane
->mtlsa
->dlen
;
1032 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1037 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1038 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1040 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1043 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1046 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1049 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1051 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1054 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1056 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1059 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1064 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1069 void SSL_certs_clear(SSL
*s
)
1071 ssl_cert_clear_certs(s
->cert
);
1074 void SSL_free(SSL
*s
)
1081 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1082 REF_PRINT_COUNT("SSL", s
);
1085 REF_ASSERT_ISNT(i
< 0);
1087 X509_VERIFY_PARAM_free(s
->param
);
1088 dane_final(&s
->dane
);
1089 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1091 /* Ignore return value */
1092 ssl_free_wbio_buffer(s
);
1094 BIO_free_all(s
->wbio
);
1095 BIO_free_all(s
->rbio
);
1097 BUF_MEM_free(s
->init_buf
);
1099 /* add extra stuff */
1100 sk_SSL_CIPHER_free(s
->cipher_list
);
1101 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1103 /* Make the next call work :-) */
1104 if (s
->session
!= NULL
) {
1105 ssl_clear_bad_session(s
);
1106 SSL_SESSION_free(s
->session
);
1108 SSL_SESSION_free(s
->psksession
);
1109 OPENSSL_free(s
->psksession_id
);
1113 ssl_cert_free(s
->cert
);
1114 /* Free up if allocated */
1116 OPENSSL_free(s
->ext
.hostname
);
1117 SSL_CTX_free(s
->session_ctx
);
1118 #ifndef OPENSSL_NO_EC
1119 OPENSSL_free(s
->ext
.ecpointformats
);
1120 OPENSSL_free(s
->ext
.supportedgroups
);
1121 #endif /* OPENSSL_NO_EC */
1122 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1123 #ifndef OPENSSL_NO_OCSP
1124 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1126 #ifndef OPENSSL_NO_CT
1127 SCT_LIST_free(s
->scts
);
1128 OPENSSL_free(s
->ext
.scts
);
1130 OPENSSL_free(s
->ext
.ocsp
.resp
);
1131 OPENSSL_free(s
->ext
.alpn
);
1132 OPENSSL_free(s
->ext
.tls13_cookie
);
1133 OPENSSL_free(s
->clienthello
);
1135 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1137 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1139 if (s
->method
!= NULL
)
1140 s
->method
->ssl_free(s
);
1142 RECORD_LAYER_release(&s
->rlayer
);
1144 SSL_CTX_free(s
->ctx
);
1146 ASYNC_WAIT_CTX_free(s
->waitctx
);
1148 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1149 OPENSSL_free(s
->ext
.npn
);
1152 #ifndef OPENSSL_NO_SRTP
1153 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1156 RAND_DRBG_free(s
->drbg
);
1157 CRYPTO_THREAD_lock_free(s
->lock
);
1162 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1164 BIO_free_all(s
->rbio
);
1168 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1171 * If the output buffering BIO is still in place, remove it
1173 if (s
->bbio
!= NULL
)
1174 s
->wbio
= BIO_pop(s
->wbio
);
1176 BIO_free_all(s
->wbio
);
1179 /* Re-attach |bbio| to the new |wbio|. */
1180 if (s
->bbio
!= NULL
)
1181 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1184 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1187 * For historical reasons, this function has many different cases in
1188 * ownership handling.
1191 /* If nothing has changed, do nothing */
1192 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1196 * If the two arguments are equal then one fewer reference is granted by the
1197 * caller than we want to take
1199 if (rbio
!= NULL
&& rbio
== wbio
)
1203 * If only the wbio is changed only adopt one reference.
1205 if (rbio
== SSL_get_rbio(s
)) {
1206 SSL_set0_wbio(s
, wbio
);
1210 * There is an asymmetry here for historical reasons. If only the rbio is
1211 * changed AND the rbio and wbio were originally different, then we only
1212 * adopt one reference.
1214 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1215 SSL_set0_rbio(s
, rbio
);
1219 /* Otherwise, adopt both references. */
1220 SSL_set0_rbio(s
, rbio
);
1221 SSL_set0_wbio(s
, wbio
);
1224 BIO
*SSL_get_rbio(const SSL
*s
)
1229 BIO
*SSL_get_wbio(const SSL
*s
)
1231 if (s
->bbio
!= NULL
) {
1233 * If |bbio| is active, the true caller-configured BIO is its
1236 return BIO_next(s
->bbio
);
1241 int SSL_get_fd(const SSL
*s
)
1243 return SSL_get_rfd(s
);
1246 int SSL_get_rfd(const SSL
*s
)
1251 b
= SSL_get_rbio(s
);
1252 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1254 BIO_get_fd(r
, &ret
);
1258 int SSL_get_wfd(const SSL
*s
)
1263 b
= SSL_get_wbio(s
);
1264 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1266 BIO_get_fd(r
, &ret
);
1270 #ifndef OPENSSL_NO_SOCK
1271 int SSL_set_fd(SSL
*s
, int fd
)
1276 bio
= BIO_new(BIO_s_socket());
1279 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1282 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1283 SSL_set_bio(s
, bio
, bio
);
1289 int SSL_set_wfd(SSL
*s
, int fd
)
1291 BIO
*rbio
= SSL_get_rbio(s
);
1293 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1294 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1295 BIO
*bio
= BIO_new(BIO_s_socket());
1298 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1301 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1302 SSL_set0_wbio(s
, bio
);
1305 SSL_set0_wbio(s
, rbio
);
1310 int SSL_set_rfd(SSL
*s
, int fd
)
1312 BIO
*wbio
= SSL_get_wbio(s
);
1314 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1315 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1316 BIO
*bio
= BIO_new(BIO_s_socket());
1319 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1322 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1323 SSL_set0_rbio(s
, bio
);
1326 SSL_set0_rbio(s
, wbio
);
1333 /* return length of latest Finished message we sent, copy to 'buf' */
1334 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1338 if (s
->s3
!= NULL
) {
1339 ret
= s
->s3
->tmp
.finish_md_len
;
1342 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1347 /* return length of latest Finished message we expected, copy to 'buf' */
1348 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1352 if (s
->s3
!= NULL
) {
1353 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1356 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1361 int SSL_get_verify_mode(const SSL
*s
)
1363 return s
->verify_mode
;
1366 int SSL_get_verify_depth(const SSL
*s
)
1368 return X509_VERIFY_PARAM_get_depth(s
->param
);
1371 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1372 return s
->verify_callback
;
1375 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1377 return ctx
->verify_mode
;
1380 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1382 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1385 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1386 return ctx
->default_verify_callback
;
1389 void SSL_set_verify(SSL
*s
, int mode
,
1390 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1392 s
->verify_mode
= mode
;
1393 if (callback
!= NULL
)
1394 s
->verify_callback
= callback
;
1397 void SSL_set_verify_depth(SSL
*s
, int depth
)
1399 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1402 void SSL_set_read_ahead(SSL
*s
, int yes
)
1404 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1407 int SSL_get_read_ahead(const SSL
*s
)
1409 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1412 int SSL_pending(const SSL
*s
)
1414 size_t pending
= s
->method
->ssl_pending(s
);
1417 * SSL_pending cannot work properly if read-ahead is enabled
1418 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1419 * impossible to fix since SSL_pending cannot report errors that may be
1420 * observed while scanning the new data. (Note that SSL_pending() is
1421 * often used as a boolean value, so we'd better not return -1.)
1423 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1424 * we just return INT_MAX.
1426 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1429 int SSL_has_pending(const SSL
*s
)
1432 * Similar to SSL_pending() but returns a 1 to indicate that we have
1433 * unprocessed data available or 0 otherwise (as opposed to the number of
1434 * bytes available). Unlike SSL_pending() this will take into account
1435 * read_ahead data. A 1 return simply indicates that we have unprocessed
1436 * data. That data may not result in any application data, or we may fail
1437 * to parse the records for some reason.
1439 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1442 return RECORD_LAYER_read_pending(&s
->rlayer
);
1445 X509
*SSL_get_peer_certificate(const SSL
*s
)
1449 if ((s
== NULL
) || (s
->session
== NULL
))
1452 r
= s
->session
->peer
;
1462 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1466 if ((s
== NULL
) || (s
->session
== NULL
))
1469 r
= s
->session
->peer_chain
;
1472 * If we are a client, cert_chain includes the peer's own certificate; if
1473 * we are a server, it does not.
1480 * Now in theory, since the calling process own 't' it should be safe to
1481 * modify. We need to be able to read f without being hassled
1483 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1486 /* Do we need to to SSL locking? */
1487 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1492 * what if we are setup for one protocol version but want to talk another
1494 if (t
->method
!= f
->method
) {
1495 t
->method
->ssl_free(t
);
1496 t
->method
= f
->method
;
1497 if (t
->method
->ssl_new(t
) == 0)
1501 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1502 ssl_cert_free(t
->cert
);
1504 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1511 /* Fix this so it checks all the valid key/cert options */
1512 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1514 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1515 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1518 if (ctx
->cert
->key
->privatekey
== NULL
) {
1519 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1522 return X509_check_private_key
1523 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1526 /* Fix this function so that it takes an optional type parameter */
1527 int SSL_check_private_key(const SSL
*ssl
)
1530 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1533 if (ssl
->cert
->key
->x509
== NULL
) {
1534 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1537 if (ssl
->cert
->key
->privatekey
== NULL
) {
1538 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1541 return X509_check_private_key(ssl
->cert
->key
->x509
,
1542 ssl
->cert
->key
->privatekey
);
1545 int SSL_waiting_for_async(SSL
*s
)
1553 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1555 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1559 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1562 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1563 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1565 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1569 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1573 int SSL_accept(SSL
*s
)
1575 if (s
->handshake_func
== NULL
) {
1576 /* Not properly initialized yet */
1577 SSL_set_accept_state(s
);
1580 return SSL_do_handshake(s
);
1583 int SSL_connect(SSL
*s
)
1585 if (s
->handshake_func
== NULL
) {
1586 /* Not properly initialized yet */
1587 SSL_set_connect_state(s
);
1590 return SSL_do_handshake(s
);
1593 long SSL_get_default_timeout(const SSL
*s
)
1595 return s
->method
->get_timeout();
1598 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1599 int (*func
) (void *))
1602 if (s
->waitctx
== NULL
) {
1603 s
->waitctx
= ASYNC_WAIT_CTX_new();
1604 if (s
->waitctx
== NULL
)
1607 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1608 sizeof(struct ssl_async_args
))) {
1610 s
->rwstate
= SSL_NOTHING
;
1611 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1614 s
->rwstate
= SSL_ASYNC_PAUSED
;
1617 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1623 s
->rwstate
= SSL_NOTHING
;
1624 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1625 /* Shouldn't happen */
1630 static int ssl_io_intern(void *vargs
)
1632 struct ssl_async_args
*args
;
1637 args
= (struct ssl_async_args
*)vargs
;
1641 switch (args
->type
) {
1643 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1645 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1647 return args
->f
.func_other(s
);
1652 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1654 if (s
->handshake_func
== NULL
) {
1655 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1659 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1660 s
->rwstate
= SSL_NOTHING
;
1664 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1665 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1666 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1670 * If we are a client and haven't received the ServerHello etc then we
1673 ossl_statem_check_finish_init(s
, 0);
1675 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1676 struct ssl_async_args args
;
1682 args
.type
= READFUNC
;
1683 args
.f
.func_read
= s
->method
->ssl_read
;
1685 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1686 *readbytes
= s
->asyncrw
;
1689 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1693 int SSL_read(SSL
*s
, void *buf
, int num
)
1699 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1703 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1706 * The cast is safe here because ret should be <= INT_MAX because num is
1710 ret
= (int)readbytes
;
1715 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1717 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1724 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1729 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1730 return SSL_READ_EARLY_DATA_ERROR
;
1733 switch (s
->early_data_state
) {
1734 case SSL_EARLY_DATA_NONE
:
1735 if (!SSL_in_before(s
)) {
1736 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1737 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1738 return SSL_READ_EARLY_DATA_ERROR
;
1742 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1743 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1744 ret
= SSL_accept(s
);
1747 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1748 return SSL_READ_EARLY_DATA_ERROR
;
1752 case SSL_EARLY_DATA_READ_RETRY
:
1753 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1754 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1755 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1757 * State machine will update early_data_state to
1758 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1761 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1762 != SSL_EARLY_DATA_FINISHED_READING
)) {
1763 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1764 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1765 : SSL_READ_EARLY_DATA_ERROR
;
1768 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1771 return SSL_READ_EARLY_DATA_FINISH
;
1774 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1775 return SSL_READ_EARLY_DATA_ERROR
;
1779 int SSL_get_early_data_status(const SSL
*s
)
1781 return s
->ext
.early_data
;
1784 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1786 if (s
->handshake_func
== NULL
) {
1787 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1791 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1794 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1795 struct ssl_async_args args
;
1801 args
.type
= READFUNC
;
1802 args
.f
.func_read
= s
->method
->ssl_peek
;
1804 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1805 *readbytes
= s
->asyncrw
;
1808 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1812 int SSL_peek(SSL
*s
, void *buf
, int num
)
1818 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1822 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1825 * The cast is safe here because ret should be <= INT_MAX because num is
1829 ret
= (int)readbytes
;
1835 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1837 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1844 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1846 if (s
->handshake_func
== NULL
) {
1847 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1851 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1852 s
->rwstate
= SSL_NOTHING
;
1853 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1857 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1858 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1859 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1860 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1863 /* If we are a client and haven't sent the Finished we better do that */
1864 ossl_statem_check_finish_init(s
, 1);
1866 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1868 struct ssl_async_args args
;
1871 args
.buf
= (void *)buf
;
1873 args
.type
= WRITEFUNC
;
1874 args
.f
.func_write
= s
->method
->ssl_write
;
1876 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1877 *written
= s
->asyncrw
;
1880 return s
->method
->ssl_write(s
, buf
, num
, written
);
1884 int SSL_write(SSL
*s
, const void *buf
, int num
)
1890 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1894 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1897 * The cast is safe here because ret should be <= INT_MAX because num is
1906 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1908 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1915 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1917 int ret
, early_data_state
;
1919 switch (s
->early_data_state
) {
1920 case SSL_EARLY_DATA_NONE
:
1922 || !SSL_in_before(s
)
1923 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1924 && (s
->psk_use_session_cb
== NULL
))) {
1925 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1926 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1931 case SSL_EARLY_DATA_CONNECT_RETRY
:
1932 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1933 ret
= SSL_connect(s
);
1936 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1941 case SSL_EARLY_DATA_WRITE_RETRY
:
1942 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1943 ret
= SSL_write_ex(s
, buf
, num
, written
);
1944 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1947 case SSL_EARLY_DATA_FINISHED_READING
:
1948 case SSL_EARLY_DATA_READ_RETRY
:
1949 early_data_state
= s
->early_data_state
;
1950 /* We are a server writing to an unauthenticated client */
1951 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1952 ret
= SSL_write_ex(s
, buf
, num
, written
);
1953 s
->early_data_state
= early_data_state
;
1957 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1962 int SSL_shutdown(SSL
*s
)
1965 * Note that this function behaves differently from what one might
1966 * expect. Return values are 0 for no success (yet), 1 for success; but
1967 * calling it once is usually not enough, even if blocking I/O is used
1968 * (see ssl3_shutdown).
1971 if (s
->handshake_func
== NULL
) {
1972 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1976 if (!SSL_in_init(s
)) {
1977 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1978 struct ssl_async_args args
;
1981 args
.type
= OTHERFUNC
;
1982 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1984 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1986 return s
->method
->ssl_shutdown(s
);
1989 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1994 int SSL_key_update(SSL
*s
, int updatetype
)
1997 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1998 * negotiated, and that it is appropriate to call SSL_key_update() instead
1999 * of SSL_renegotiate().
2001 if (!SSL_IS_TLS13(s
)) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2006 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2007 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2008 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2012 if (!SSL_is_init_finished(s
)) {
2013 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2017 ossl_statem_set_in_init(s
, 1);
2018 s
->key_update
= updatetype
;
2022 int SSL_get_key_update_type(SSL
*s
)
2024 return s
->key_update
;
2027 int SSL_renegotiate(SSL
*s
)
2029 if (SSL_IS_TLS13(s
)) {
2030 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2034 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2035 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2042 return s
->method
->ssl_renegotiate(s
);
2045 int SSL_renegotiate_abbreviated(SSL
*s
)
2047 if (SSL_IS_TLS13(s
)) {
2048 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2052 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2053 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2060 return s
->method
->ssl_renegotiate(s
);
2063 int SSL_renegotiate_pending(SSL
*s
)
2066 * becomes true when negotiation is requested; false again once a
2067 * handshake has finished
2069 return (s
->renegotiate
!= 0);
2072 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2077 case SSL_CTRL_GET_READ_AHEAD
:
2078 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2079 case SSL_CTRL_SET_READ_AHEAD
:
2080 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2081 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2084 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2085 s
->msg_callback_arg
= parg
;
2089 return (s
->mode
|= larg
);
2090 case SSL_CTRL_CLEAR_MODE
:
2091 return (s
->mode
&= ~larg
);
2092 case SSL_CTRL_GET_MAX_CERT_LIST
:
2093 return (long)s
->max_cert_list
;
2094 case SSL_CTRL_SET_MAX_CERT_LIST
:
2097 l
= (long)s
->max_cert_list
;
2098 s
->max_cert_list
= (size_t)larg
;
2100 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2101 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2103 s
->max_send_fragment
= larg
;
2104 if (s
->max_send_fragment
< s
->split_send_fragment
)
2105 s
->split_send_fragment
= s
->max_send_fragment
;
2107 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2108 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2110 s
->split_send_fragment
= larg
;
2112 case SSL_CTRL_SET_MAX_PIPELINES
:
2113 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2115 s
->max_pipelines
= larg
;
2117 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2119 case SSL_CTRL_GET_RI_SUPPORT
:
2121 return s
->s3
->send_connection_binding
;
2124 case SSL_CTRL_CERT_FLAGS
:
2125 return (s
->cert
->cert_flags
|= larg
);
2126 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2127 return (s
->cert
->cert_flags
&= ~larg
);
2129 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2131 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2133 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2134 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2136 return TLS_CIPHER_LEN
;
2138 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2139 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2141 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2145 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2146 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2147 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2148 &s
->min_proto_version
);
2149 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2150 return s
->min_proto_version
;
2151 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2152 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2153 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2154 &s
->max_proto_version
);
2155 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2156 return s
->max_proto_version
;
2158 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2162 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2165 case SSL_CTRL_SET_MSG_CALLBACK
:
2166 s
->msg_callback
= (void (*)
2167 (int write_p
, int version
, int content_type
,
2168 const void *buf
, size_t len
, SSL
*ssl
,
2173 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2177 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2179 return ctx
->sessions
;
2182 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2186 /* For some cases with ctx == NULL perform syntax checks */
2189 #ifndef OPENSSL_NO_EC
2190 case SSL_CTRL_SET_GROUPS_LIST
:
2191 return tls1_set_groups_list(NULL
, NULL
, parg
);
2193 case SSL_CTRL_SET_SIGALGS_LIST
:
2194 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2195 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2202 case SSL_CTRL_GET_READ_AHEAD
:
2203 return ctx
->read_ahead
;
2204 case SSL_CTRL_SET_READ_AHEAD
:
2205 l
= ctx
->read_ahead
;
2206 ctx
->read_ahead
= larg
;
2209 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2210 ctx
->msg_callback_arg
= parg
;
2213 case SSL_CTRL_GET_MAX_CERT_LIST
:
2214 return (long)ctx
->max_cert_list
;
2215 case SSL_CTRL_SET_MAX_CERT_LIST
:
2218 l
= (long)ctx
->max_cert_list
;
2219 ctx
->max_cert_list
= (size_t)larg
;
2222 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2225 l
= (long)ctx
->session_cache_size
;
2226 ctx
->session_cache_size
= (size_t)larg
;
2228 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2229 return (long)ctx
->session_cache_size
;
2230 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2231 l
= ctx
->session_cache_mode
;
2232 ctx
->session_cache_mode
= larg
;
2234 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2235 return ctx
->session_cache_mode
;
2237 case SSL_CTRL_SESS_NUMBER
:
2238 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2239 case SSL_CTRL_SESS_CONNECT
:
2240 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect
, &i
, ctx
->lock
)
2242 case SSL_CTRL_SESS_CONNECT_GOOD
:
2243 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_good
, &i
, ctx
->lock
)
2245 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2246 return CRYPTO_atomic_read(&ctx
->stats
.sess_connect_renegotiate
, &i
,
2249 case SSL_CTRL_SESS_ACCEPT
:
2250 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept
, &i
, ctx
->lock
)
2252 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2253 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_good
, &i
, ctx
->lock
)
2255 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2256 return CRYPTO_atomic_read(&ctx
->stats
.sess_accept_renegotiate
, &i
,
2259 case SSL_CTRL_SESS_HIT
:
2260 return CRYPTO_atomic_read(&ctx
->stats
.sess_hit
, &i
, ctx
->lock
)
2262 case SSL_CTRL_SESS_CB_HIT
:
2263 return CRYPTO_atomic_read(&ctx
->stats
.sess_cb_hit
, &i
, ctx
->lock
)
2265 case SSL_CTRL_SESS_MISSES
:
2266 return CRYPTO_atomic_read(&ctx
->stats
.sess_miss
, &i
, ctx
->lock
)
2268 case SSL_CTRL_SESS_TIMEOUTS
:
2269 return CRYPTO_atomic_read(&ctx
->stats
.sess_timeout
, &i
, ctx
->lock
)
2271 case SSL_CTRL_SESS_CACHE_FULL
:
2272 return CRYPTO_atomic_read(&ctx
->stats
.sess_cache_full
, &i
, ctx
->lock
)
2275 return (ctx
->mode
|= larg
);
2276 case SSL_CTRL_CLEAR_MODE
:
2277 return (ctx
->mode
&= ~larg
);
2278 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2279 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2281 ctx
->max_send_fragment
= larg
;
2282 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2283 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2285 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2286 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2288 ctx
->split_send_fragment
= larg
;
2290 case SSL_CTRL_SET_MAX_PIPELINES
:
2291 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2293 ctx
->max_pipelines
= larg
;
2295 case SSL_CTRL_CERT_FLAGS
:
2296 return (ctx
->cert
->cert_flags
|= larg
);
2297 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2298 return (ctx
->cert
->cert_flags
&= ~larg
);
2299 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2300 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2301 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2302 &ctx
->min_proto_version
);
2303 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2304 return ctx
->min_proto_version
;
2305 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2306 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2307 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2308 &ctx
->max_proto_version
);
2309 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2310 return ctx
->max_proto_version
;
2312 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2316 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2319 case SSL_CTRL_SET_MSG_CALLBACK
:
2320 ctx
->msg_callback
= (void (*)
2321 (int write_p
, int version
, int content_type
,
2322 const void *buf
, size_t len
, SSL
*ssl
,
2327 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2331 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2340 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2341 const SSL_CIPHER
*const *bp
)
2343 if ((*ap
)->id
> (*bp
)->id
)
2345 if ((*ap
)->id
< (*bp
)->id
)
2350 /** return a STACK of the ciphers available for the SSL and in order of
2352 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2355 if (s
->cipher_list
!= NULL
) {
2356 return s
->cipher_list
;
2357 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2358 return s
->ctx
->cipher_list
;
2364 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2366 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2368 return s
->session
->ciphers
;
2371 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2373 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2375 ciphers
= SSL_get_ciphers(s
);
2378 ssl_set_client_disabled(s
);
2379 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2380 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2381 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2383 sk
= sk_SSL_CIPHER_new_null();
2386 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2387 sk_SSL_CIPHER_free(sk
);
2395 /** return a STACK of the ciphers available for the SSL and in order of
2397 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2400 if (s
->cipher_list_by_id
!= NULL
) {
2401 return s
->cipher_list_by_id
;
2402 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2403 return s
->ctx
->cipher_list_by_id
;
2409 /** The old interface to get the same thing as SSL_get_ciphers() */
2410 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2412 const SSL_CIPHER
*c
;
2413 STACK_OF(SSL_CIPHER
) *sk
;
2417 sk
= SSL_get_ciphers(s
);
2418 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2420 c
= sk_SSL_CIPHER_value(sk
, n
);
2426 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2428 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2431 return ctx
->cipher_list
;
2435 /** specify the ciphers to be used by default by the SSL_CTX */
2436 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2438 STACK_OF(SSL_CIPHER
) *sk
;
2440 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2441 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2443 * ssl_create_cipher_list may return an empty stack if it was unable to
2444 * find a cipher matching the given rule string (for example if the rule
2445 * string specifies a cipher which has been disabled). This is not an
2446 * error as far as ssl_create_cipher_list is concerned, and hence
2447 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2451 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2452 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2458 /** specify the ciphers to be used by the SSL */
2459 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2461 STACK_OF(SSL_CIPHER
) *sk
;
2463 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2464 &s
->cipher_list_by_id
, str
, s
->cert
);
2465 /* see comment in SSL_CTX_set_cipher_list */
2468 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2469 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2475 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2478 STACK_OF(SSL_CIPHER
) *sk
;
2479 const SSL_CIPHER
*c
;
2482 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2486 sk
= s
->session
->ciphers
;
2488 if (sk_SSL_CIPHER_num(sk
) == 0)
2491 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2494 c
= sk_SSL_CIPHER_value(sk
, i
);
2495 n
= strlen(c
->name
);
2511 /** return a servername extension value if provided in Client Hello, or NULL.
2512 * So far, only host_name types are defined (RFC 3546).
2515 const char *SSL_get_servername(const SSL
*s
, const int type
)
2517 if (type
!= TLSEXT_NAMETYPE_host_name
)
2520 return s
->session
&& !s
->ext
.hostname
?
2521 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2524 int SSL_get_servername_type(const SSL
*s
)
2527 && (!s
->ext
.hostname
? s
->session
->
2528 ext
.hostname
: s
->ext
.hostname
))
2529 return TLSEXT_NAMETYPE_host_name
;
2534 * SSL_select_next_proto implements the standard protocol selection. It is
2535 * expected that this function is called from the callback set by
2536 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2537 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2538 * not included in the length. A byte string of length 0 is invalid. No byte
2539 * string may be truncated. The current, but experimental algorithm for
2540 * selecting the protocol is: 1) If the server doesn't support NPN then this
2541 * is indicated to the callback. In this case, the client application has to
2542 * abort the connection or have a default application level protocol. 2) If
2543 * the server supports NPN, but advertises an empty list then the client
2544 * selects the first protocol in its list, but indicates via the API that this
2545 * fallback case was enacted. 3) Otherwise, the client finds the first
2546 * protocol in the server's list that it supports and selects this protocol.
2547 * This is because it's assumed that the server has better information about
2548 * which protocol a client should use. 4) If the client doesn't support any
2549 * of the server's advertised protocols, then this is treated the same as
2550 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2551 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2553 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2554 const unsigned char *server
,
2555 unsigned int server_len
,
2556 const unsigned char *client
, unsigned int client_len
)
2559 const unsigned char *result
;
2560 int status
= OPENSSL_NPN_UNSUPPORTED
;
2563 * For each protocol in server preference order, see if we support it.
2565 for (i
= 0; i
< server_len
;) {
2566 for (j
= 0; j
< client_len
;) {
2567 if (server
[i
] == client
[j
] &&
2568 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2569 /* We found a match */
2570 result
= &server
[i
];
2571 status
= OPENSSL_NPN_NEGOTIATED
;
2581 /* There's no overlap between our protocols and the server's list. */
2583 status
= OPENSSL_NPN_NO_OVERLAP
;
2586 *out
= (unsigned char *)result
+ 1;
2587 *outlen
= result
[0];
2591 #ifndef OPENSSL_NO_NEXTPROTONEG
2593 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2594 * client's requested protocol for this connection and returns 0. If the
2595 * client didn't request any protocol, then *data is set to NULL. Note that
2596 * the client can request any protocol it chooses. The value returned from
2597 * this function need not be a member of the list of supported protocols
2598 * provided by the callback.
2600 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2607 *len
= (unsigned int)s
->ext
.npn_len
;
2612 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2613 * a TLS server needs a list of supported protocols for Next Protocol
2614 * Negotiation. The returned list must be in wire format. The list is
2615 * returned by setting |out| to point to it and |outlen| to its length. This
2616 * memory will not be modified, but one should assume that the SSL* keeps a
2617 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2618 * wishes to advertise. Otherwise, no such extension will be included in the
2621 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2622 SSL_CTX_npn_advertised_cb_func cb
,
2625 ctx
->ext
.npn_advertised_cb
= cb
;
2626 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2630 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2631 * client needs to select a protocol from the server's provided list. |out|
2632 * must be set to point to the selected protocol (which may be within |in|).
2633 * The length of the protocol name must be written into |outlen|. The
2634 * server's advertised protocols are provided in |in| and |inlen|. The
2635 * callback can assume that |in| is syntactically valid. The client must
2636 * select a protocol. It is fatal to the connection if this callback returns
2637 * a value other than SSL_TLSEXT_ERR_OK.
2639 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2640 SSL_CTX_npn_select_cb_func cb
,
2643 ctx
->ext
.npn_select_cb
= cb
;
2644 ctx
->ext
.npn_select_cb_arg
= arg
;
2649 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2650 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2651 * length-prefixed strings). Returns 0 on success.
2653 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2654 unsigned int protos_len
)
2656 OPENSSL_free(ctx
->ext
.alpn
);
2657 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2658 if (ctx
->ext
.alpn
== NULL
) {
2659 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2662 ctx
->ext
.alpn_len
= protos_len
;
2668 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2669 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2670 * length-prefixed strings). Returns 0 on success.
2672 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2673 unsigned int protos_len
)
2675 OPENSSL_free(ssl
->ext
.alpn
);
2676 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2677 if (ssl
->ext
.alpn
== NULL
) {
2678 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2681 ssl
->ext
.alpn_len
= protos_len
;
2687 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2688 * called during ClientHello processing in order to select an ALPN protocol
2689 * from the client's list of offered protocols.
2691 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2692 SSL_CTX_alpn_select_cb_func cb
,
2695 ctx
->ext
.alpn_select_cb
= cb
;
2696 ctx
->ext
.alpn_select_cb_arg
= arg
;
2700 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2701 * On return it sets |*data| to point to |*len| bytes of protocol name
2702 * (not including the leading length-prefix byte). If the server didn't
2703 * respond with a negotiated protocol then |*len| will be zero.
2705 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2710 *data
= ssl
->s3
->alpn_selected
;
2714 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2717 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2718 const char *label
, size_t llen
,
2719 const unsigned char *context
, size_t contextlen
,
2722 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2725 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2727 contextlen
, use_context
);
2730 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2732 const unsigned char *session_id
= a
->session_id
;
2734 unsigned char tmp_storage
[4];
2736 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2737 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2738 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2739 session_id
= tmp_storage
;
2743 ((unsigned long)session_id
[0]) |
2744 ((unsigned long)session_id
[1] << 8L) |
2745 ((unsigned long)session_id
[2] << 16L) |
2746 ((unsigned long)session_id
[3] << 24L);
2751 * NB: If this function (or indeed the hash function which uses a sort of
2752 * coarser function than this one) is changed, ensure
2753 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2754 * being able to construct an SSL_SESSION that will collide with any existing
2755 * session with a matching session ID.
2757 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2759 if (a
->ssl_version
!= b
->ssl_version
)
2761 if (a
->session_id_length
!= b
->session_id_length
)
2763 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
2767 * These wrapper functions should remain rather than redeclaring
2768 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2769 * variable. The reason is that the functions aren't static, they're exposed
2773 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2775 SSL_CTX
*ret
= NULL
;
2778 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2782 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2785 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2786 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2789 ret
= OPENSSL_zalloc(sizeof(*ret
));
2794 ret
->min_proto_version
= 0;
2795 ret
->max_proto_version
= 0;
2796 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2797 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2798 /* We take the system default. */
2799 ret
->session_timeout
= meth
->get_timeout();
2800 ret
->references
= 1;
2801 ret
->lock
= CRYPTO_THREAD_lock_new();
2802 if (ret
->lock
== NULL
) {
2803 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2807 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2808 ret
->verify_mode
= SSL_VERIFY_NONE
;
2809 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2812 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2813 if (ret
->sessions
== NULL
)
2815 ret
->cert_store
= X509_STORE_new();
2816 if (ret
->cert_store
== NULL
)
2818 #ifndef OPENSSL_NO_CT
2819 ret
->ctlog_store
= CTLOG_STORE_new();
2820 if (ret
->ctlog_store
== NULL
)
2823 if (!ssl_create_cipher_list(ret
->method
,
2824 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2825 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2826 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2827 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2831 ret
->param
= X509_VERIFY_PARAM_new();
2832 if (ret
->param
== NULL
)
2835 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2836 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2839 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2840 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2844 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2847 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2850 /* No compression for DTLS */
2851 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2852 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2854 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2855 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2857 /* Setup RFC5077 ticket keys */
2858 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2859 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2860 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2861 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2862 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2863 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2864 ret
->options
|= SSL_OP_NO_TICKET
;
2866 #ifndef OPENSSL_NO_SRP
2867 if (!SSL_CTX_SRP_CTX_init(ret
))
2870 #ifndef OPENSSL_NO_ENGINE
2871 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2872 # define eng_strx(x) #x
2873 # define eng_str(x) eng_strx(x)
2874 /* Use specific client engine automatically... ignore errors */
2877 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2880 ENGINE_load_builtin_engines();
2881 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2883 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2889 * Default is to connect to non-RI servers. When RI is more widely
2890 * deployed might change this.
2892 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2894 * Disable compression by default to prevent CRIME. Applications can
2895 * re-enable compression by configuring
2896 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2897 * or by using the SSL_CONF library.
2899 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2901 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2904 * Default max early data is a fully loaded single record. Could be split
2905 * across multiple records in practice
2907 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2911 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2917 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2921 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2924 REF_PRINT_COUNT("SSL_CTX", ctx
);
2925 REF_ASSERT_ISNT(i
< 2);
2926 return ((i
> 1) ? 1 : 0);
2929 void SSL_CTX_free(SSL_CTX
*a
)
2936 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2937 REF_PRINT_COUNT("SSL_CTX", a
);
2940 REF_ASSERT_ISNT(i
< 0);
2942 X509_VERIFY_PARAM_free(a
->param
);
2943 dane_ctx_final(&a
->dane
);
2946 * Free internal session cache. However: the remove_cb() may reference
2947 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2948 * after the sessions were flushed.
2949 * As the ex_data handling routines might also touch the session cache,
2950 * the most secure solution seems to be: empty (flush) the cache, then
2951 * free ex_data, then finally free the cache.
2952 * (See ticket [openssl.org #212].)
2954 if (a
->sessions
!= NULL
)
2955 SSL_CTX_flush_sessions(a
, 0);
2957 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2958 lh_SSL_SESSION_free(a
->sessions
);
2959 X509_STORE_free(a
->cert_store
);
2960 #ifndef OPENSSL_NO_CT
2961 CTLOG_STORE_free(a
->ctlog_store
);
2963 sk_SSL_CIPHER_free(a
->cipher_list
);
2964 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2965 ssl_cert_free(a
->cert
);
2966 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2967 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2968 a
->comp_methods
= NULL
;
2969 #ifndef OPENSSL_NO_SRTP
2970 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2972 #ifndef OPENSSL_NO_SRP
2973 SSL_CTX_SRP_CTX_free(a
);
2975 #ifndef OPENSSL_NO_ENGINE
2976 ENGINE_finish(a
->client_cert_engine
);
2979 #ifndef OPENSSL_NO_EC
2980 OPENSSL_free(a
->ext
.ecpointformats
);
2981 OPENSSL_free(a
->ext
.supportedgroups
);
2983 OPENSSL_free(a
->ext
.alpn
);
2985 CRYPTO_THREAD_lock_free(a
->lock
);
2990 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2992 ctx
->default_passwd_callback
= cb
;
2995 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2997 ctx
->default_passwd_callback_userdata
= u
;
3000 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3002 return ctx
->default_passwd_callback
;
3005 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3007 return ctx
->default_passwd_callback_userdata
;
3010 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3012 s
->default_passwd_callback
= cb
;
3015 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3017 s
->default_passwd_callback_userdata
= u
;
3020 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3022 return s
->default_passwd_callback
;
3025 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3027 return s
->default_passwd_callback_userdata
;
3030 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3031 int (*cb
) (X509_STORE_CTX
*, void *),
3034 ctx
->app_verify_callback
= cb
;
3035 ctx
->app_verify_arg
= arg
;
3038 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3039 int (*cb
) (int, X509_STORE_CTX
*))
3041 ctx
->verify_mode
= mode
;
3042 ctx
->default_verify_callback
= cb
;
3045 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3047 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3050 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3052 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3055 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3057 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3060 void ssl_set_masks(SSL
*s
)
3063 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3064 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3065 unsigned long mask_k
, mask_a
;
3066 #ifndef OPENSSL_NO_EC
3067 int have_ecc_cert
, ecdsa_ok
;
3072 #ifndef OPENSSL_NO_DH
3073 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3078 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3079 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3080 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3081 #ifndef OPENSSL_NO_EC
3082 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3088 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3089 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3092 #ifndef OPENSSL_NO_GOST
3093 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3094 mask_k
|= SSL_kGOST
;
3095 mask_a
|= SSL_aGOST12
;
3097 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3098 mask_k
|= SSL_kGOST
;
3099 mask_a
|= SSL_aGOST12
;
3101 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3102 mask_k
|= SSL_kGOST
;
3103 mask_a
|= SSL_aGOST01
;
3114 * If we only have an RSA-PSS certificate allow RSA authentication
3115 * if TLS 1.2 and peer supports it.
3118 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3119 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3120 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3127 mask_a
|= SSL_aNULL
;
3130 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3131 * depending on the key usage extension.
3133 #ifndef OPENSSL_NO_EC
3134 if (have_ecc_cert
) {
3136 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3137 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3138 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3141 mask_a
|= SSL_aECDSA
;
3143 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3144 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3145 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3146 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3147 mask_a
|= SSL_aECDSA
;
3150 #ifndef OPENSSL_NO_EC
3151 mask_k
|= SSL_kECDHE
;
3154 #ifndef OPENSSL_NO_PSK
3157 if (mask_k
& SSL_kRSA
)
3158 mask_k
|= SSL_kRSAPSK
;
3159 if (mask_k
& SSL_kDHE
)
3160 mask_k
|= SSL_kDHEPSK
;
3161 if (mask_k
& SSL_kECDHE
)
3162 mask_k
|= SSL_kECDHEPSK
;
3165 s
->s3
->tmp
.mask_k
= mask_k
;
3166 s
->s3
->tmp
.mask_a
= mask_a
;
3169 #ifndef OPENSSL_NO_EC
3171 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3173 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3174 /* key usage, if present, must allow signing */
3175 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3176 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3177 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3181 return 1; /* all checks are ok */
3186 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3187 size_t *serverinfo_length
)
3189 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3190 *serverinfo_length
= 0;
3192 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3195 *serverinfo
= cpk
->serverinfo
;
3196 *serverinfo_length
= cpk
->serverinfo_length
;
3200 void ssl_update_cache(SSL
*s
, int mode
)
3205 * If the session_id_length is 0, we are not supposed to cache it, and it
3206 * would be rather hard to do anyway :-)
3208 if (s
->session
->session_id_length
== 0)
3211 i
= s
->session_ctx
->session_cache_mode
;
3213 && (!s
->hit
|| SSL_IS_TLS13(s
))
3214 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3215 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3216 && s
->session_ctx
->new_session_cb
!= NULL
) {
3217 SSL_SESSION_up_ref(s
->session
);
3218 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3219 SSL_SESSION_free(s
->session
);
3222 /* auto flush every 255 connections */
3223 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3225 if (mode
& SSL_SESS_CACHE_CLIENT
)
3226 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3228 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3229 if (CRYPTO_atomic_read(stat
, &val
, s
->session_ctx
->lock
)
3230 && (val
& 0xff) == 0xff)
3231 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3235 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3240 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3245 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3249 if (s
->method
!= meth
) {
3250 const SSL_METHOD
*sm
= s
->method
;
3251 int (*hf
) (SSL
*) = s
->handshake_func
;
3253 if (sm
->version
== meth
->version
)
3258 ret
= s
->method
->ssl_new(s
);
3261 if (hf
== sm
->ssl_connect
)
3262 s
->handshake_func
= meth
->ssl_connect
;
3263 else if (hf
== sm
->ssl_accept
)
3264 s
->handshake_func
= meth
->ssl_accept
;
3269 int SSL_get_error(const SSL
*s
, int i
)
3276 return SSL_ERROR_NONE
;
3279 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3280 * where we do encode the error
3282 if ((l
= ERR_peek_error()) != 0) {
3283 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3284 return SSL_ERROR_SYSCALL
;
3286 return SSL_ERROR_SSL
;
3289 if (SSL_want_read(s
)) {
3290 bio
= SSL_get_rbio(s
);
3291 if (BIO_should_read(bio
))
3292 return SSL_ERROR_WANT_READ
;
3293 else if (BIO_should_write(bio
))
3295 * This one doesn't make too much sense ... We never try to write
3296 * to the rbio, and an application program where rbio and wbio
3297 * are separate couldn't even know what it should wait for.
3298 * However if we ever set s->rwstate incorrectly (so that we have
3299 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3300 * wbio *are* the same, this test works around that bug; so it
3301 * might be safer to keep it.
3303 return SSL_ERROR_WANT_WRITE
;
3304 else if (BIO_should_io_special(bio
)) {
3305 reason
= BIO_get_retry_reason(bio
);
3306 if (reason
== BIO_RR_CONNECT
)
3307 return SSL_ERROR_WANT_CONNECT
;
3308 else if (reason
== BIO_RR_ACCEPT
)
3309 return SSL_ERROR_WANT_ACCEPT
;
3311 return SSL_ERROR_SYSCALL
; /* unknown */
3315 if (SSL_want_write(s
)) {
3316 /* Access wbio directly - in order to use the buffered bio if present */
3318 if (BIO_should_write(bio
))
3319 return SSL_ERROR_WANT_WRITE
;
3320 else if (BIO_should_read(bio
))
3322 * See above (SSL_want_read(s) with BIO_should_write(bio))
3324 return SSL_ERROR_WANT_READ
;
3325 else if (BIO_should_io_special(bio
)) {
3326 reason
= BIO_get_retry_reason(bio
);
3327 if (reason
== BIO_RR_CONNECT
)
3328 return SSL_ERROR_WANT_CONNECT
;
3329 else if (reason
== BIO_RR_ACCEPT
)
3330 return SSL_ERROR_WANT_ACCEPT
;
3332 return SSL_ERROR_SYSCALL
;
3335 if (SSL_want_x509_lookup(s
))
3336 return SSL_ERROR_WANT_X509_LOOKUP
;
3337 if (SSL_want_async(s
))
3338 return SSL_ERROR_WANT_ASYNC
;
3339 if (SSL_want_async_job(s
))
3340 return SSL_ERROR_WANT_ASYNC_JOB
;
3341 if (SSL_want_client_hello_cb(s
))
3342 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3344 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3345 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3346 return SSL_ERROR_ZERO_RETURN
;
3348 return SSL_ERROR_SYSCALL
;
3351 static int ssl_do_handshake_intern(void *vargs
)
3353 struct ssl_async_args
*args
;
3356 args
= (struct ssl_async_args
*)vargs
;
3359 return s
->handshake_func(s
);
3362 int SSL_do_handshake(SSL
*s
)
3366 if (s
->handshake_func
== NULL
) {
3367 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3371 ossl_statem_check_finish_init(s
, -1);
3373 s
->method
->ssl_renegotiate_check(s
, 0);
3375 if (SSL_is_server(s
)) {
3376 /* clear SNI settings at server-side */
3377 OPENSSL_free(s
->ext
.hostname
);
3378 s
->ext
.hostname
= NULL
;
3381 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3382 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3383 struct ssl_async_args args
;
3387 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3389 ret
= s
->handshake_func(s
);
3395 void SSL_set_accept_state(SSL
*s
)
3399 ossl_statem_clear(s
);
3400 s
->handshake_func
= s
->method
->ssl_accept
;
3404 void SSL_set_connect_state(SSL
*s
)
3408 ossl_statem_clear(s
);
3409 s
->handshake_func
= s
->method
->ssl_connect
;
3413 int ssl_undefined_function(SSL
*s
)
3415 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3419 int ssl_undefined_void_function(void)
3421 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3422 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3426 int ssl_undefined_const_function(const SSL
*s
)
3431 const SSL_METHOD
*ssl_bad_method(int ver
)
3433 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3437 const char *ssl_protocol_to_string(int version
)
3441 case TLS1_3_VERSION
:
3444 case TLS1_2_VERSION
:
3447 case TLS1_1_VERSION
:
3462 case DTLS1_2_VERSION
:
3470 const char *SSL_get_version(const SSL
*s
)
3472 return ssl_protocol_to_string(s
->version
);
3475 SSL
*SSL_dup(SSL
*s
)
3477 STACK_OF(X509_NAME
) *sk
;
3482 /* If we're not quiescent, just up_ref! */
3483 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3484 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3489 * Otherwise, copy configuration state, and session if set.
3491 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3494 if (s
->session
!= NULL
) {
3496 * Arranges to share the same session via up_ref. This "copies"
3497 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3499 if (!SSL_copy_session_id(ret
, s
))
3503 * No session has been established yet, so we have to expect that
3504 * s->cert or ret->cert will be changed later -- they should not both
3505 * point to the same object, and thus we can't use
3506 * SSL_copy_session_id.
3508 if (!SSL_set_ssl_method(ret
, s
->method
))
3511 if (s
->cert
!= NULL
) {
3512 ssl_cert_free(ret
->cert
);
3513 ret
->cert
= ssl_cert_dup(s
->cert
);
3514 if (ret
->cert
== NULL
)
3518 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3519 (int)s
->sid_ctx_length
))
3523 if (!ssl_dane_dup(ret
, s
))
3525 ret
->version
= s
->version
;
3526 ret
->options
= s
->options
;
3527 ret
->mode
= s
->mode
;
3528 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3529 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3530 ret
->msg_callback
= s
->msg_callback
;
3531 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3532 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3533 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3534 ret
->generate_session_id
= s
->generate_session_id
;
3536 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3538 /* copy app data, a little dangerous perhaps */
3539 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3542 /* setup rbio, and wbio */
3543 if (s
->rbio
!= NULL
) {
3544 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3547 if (s
->wbio
!= NULL
) {
3548 if (s
->wbio
!= s
->rbio
) {
3549 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3552 BIO_up_ref(ret
->rbio
);
3553 ret
->wbio
= ret
->rbio
;
3557 ret
->server
= s
->server
;
3558 if (s
->handshake_func
) {
3560 SSL_set_accept_state(ret
);
3562 SSL_set_connect_state(ret
);
3564 ret
->shutdown
= s
->shutdown
;
3567 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3568 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3570 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3572 /* dup the cipher_list and cipher_list_by_id stacks */
3573 if (s
->cipher_list
!= NULL
) {
3574 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3577 if (s
->cipher_list_by_id
!= NULL
)
3578 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3582 /* Dup the client_CA list */
3583 if (s
->ca_names
!= NULL
) {
3584 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3587 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3588 xn
= sk_X509_NAME_value(sk
, i
);
3589 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3602 void ssl_clear_cipher_ctx(SSL
*s
)
3604 if (s
->enc_read_ctx
!= NULL
) {
3605 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3606 s
->enc_read_ctx
= NULL
;
3608 if (s
->enc_write_ctx
!= NULL
) {
3609 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3610 s
->enc_write_ctx
= NULL
;
3612 #ifndef OPENSSL_NO_COMP
3613 COMP_CTX_free(s
->expand
);
3615 COMP_CTX_free(s
->compress
);
3620 X509
*SSL_get_certificate(const SSL
*s
)
3622 if (s
->cert
!= NULL
)
3623 return s
->cert
->key
->x509
;
3628 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3630 if (s
->cert
!= NULL
)
3631 return s
->cert
->key
->privatekey
;
3636 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3638 if (ctx
->cert
!= NULL
)
3639 return ctx
->cert
->key
->x509
;
3644 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3646 if (ctx
->cert
!= NULL
)
3647 return ctx
->cert
->key
->privatekey
;
3652 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3654 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3655 return s
->session
->cipher
;
3659 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3661 return s
->s3
->tmp
.new_cipher
;
3664 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3666 #ifndef OPENSSL_NO_COMP
3667 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3673 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3675 #ifndef OPENSSL_NO_COMP
3676 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3682 int ssl_init_wbio_buffer(SSL
*s
)
3686 if (s
->bbio
!= NULL
) {
3687 /* Already buffered. */
3691 bbio
= BIO_new(BIO_f_buffer());
3692 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3694 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3698 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3703 int ssl_free_wbio_buffer(SSL
*s
)
3705 /* callers ensure s is never null */
3706 if (s
->bbio
== NULL
)
3709 s
->wbio
= BIO_pop(s
->wbio
);
3710 if (!ossl_assert(s
->wbio
!= NULL
))
3718 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3720 ctx
->quiet_shutdown
= mode
;
3723 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3725 return ctx
->quiet_shutdown
;
3728 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3730 s
->quiet_shutdown
= mode
;
3733 int SSL_get_quiet_shutdown(const SSL
*s
)
3735 return s
->quiet_shutdown
;
3738 void SSL_set_shutdown(SSL
*s
, int mode
)
3743 int SSL_get_shutdown(const SSL
*s
)
3748 int SSL_version(const SSL
*s
)
3753 int SSL_client_version(const SSL
*s
)
3755 return s
->client_version
;
3758 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3763 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3766 if (ssl
->ctx
== ctx
)
3769 ctx
= ssl
->session_ctx
;
3770 new_cert
= ssl_cert_dup(ctx
->cert
);
3771 if (new_cert
== NULL
) {
3775 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3776 ssl_cert_free(new_cert
);
3780 ssl_cert_free(ssl
->cert
);
3781 ssl
->cert
= new_cert
;
3784 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3785 * so setter APIs must prevent invalid lengths from entering the system.
3787 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3791 * If the session ID context matches that of the parent SSL_CTX,
3792 * inherit it from the new SSL_CTX as well. If however the context does
3793 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3794 * leave it unchanged.
3796 if ((ssl
->ctx
!= NULL
) &&
3797 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3798 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3799 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3800 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3803 SSL_CTX_up_ref(ctx
);
3804 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3810 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3812 return X509_STORE_set_default_paths(ctx
->cert_store
);
3815 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3817 X509_LOOKUP
*lookup
;
3819 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3822 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3824 /* Clear any errors if the default directory does not exist */
3830 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3832 X509_LOOKUP
*lookup
;
3834 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3838 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3840 /* Clear any errors if the default file does not exist */
3846 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3849 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
3852 void SSL_set_info_callback(SSL
*ssl
,
3853 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3855 ssl
->info_callback
= cb
;
3859 * One compiler (Diab DCC) doesn't like argument names in returned function
3862 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3865 return ssl
->info_callback
;
3868 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3870 ssl
->verify_result
= arg
;
3873 long SSL_get_verify_result(const SSL
*ssl
)
3875 return ssl
->verify_result
;
3878 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3881 return sizeof(ssl
->s3
->client_random
);
3882 if (outlen
> sizeof(ssl
->s3
->client_random
))
3883 outlen
= sizeof(ssl
->s3
->client_random
);
3884 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3888 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3891 return sizeof(ssl
->s3
->server_random
);
3892 if (outlen
> sizeof(ssl
->s3
->server_random
))
3893 outlen
= sizeof(ssl
->s3
->server_random
);
3894 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3898 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3899 unsigned char *out
, size_t outlen
)
3902 return session
->master_key_length
;
3903 if (outlen
> session
->master_key_length
)
3904 outlen
= session
->master_key_length
;
3905 memcpy(out
, session
->master_key
, outlen
);
3909 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3912 if (len
> sizeof(sess
->master_key
))
3915 memcpy(sess
->master_key
, in
, len
);
3916 sess
->master_key_length
= len
;
3921 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3923 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
3926 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3928 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
3931 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3933 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
3936 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3938 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
3941 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3943 return ctx
->cert_store
;
3946 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3948 X509_STORE_free(ctx
->cert_store
);
3949 ctx
->cert_store
= store
;
3952 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3955 X509_STORE_up_ref(store
);
3956 SSL_CTX_set_cert_store(ctx
, store
);
3959 int SSL_want(const SSL
*s
)
3965 * \brief Set the callback for generating temporary DH keys.
3966 * \param ctx the SSL context.
3967 * \param dh the callback
3970 #ifndef OPENSSL_NO_DH
3971 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3972 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3975 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3978 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3981 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3985 #ifndef OPENSSL_NO_PSK
3986 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3988 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3989 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3992 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3993 if (identity_hint
!= NULL
) {
3994 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3995 if (ctx
->cert
->psk_identity_hint
== NULL
)
3998 ctx
->cert
->psk_identity_hint
= NULL
;
4002 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4007 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4008 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4011 OPENSSL_free(s
->cert
->psk_identity_hint
);
4012 if (identity_hint
!= NULL
) {
4013 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4014 if (s
->cert
->psk_identity_hint
== NULL
)
4017 s
->cert
->psk_identity_hint
= NULL
;
4021 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4023 if (s
== NULL
|| s
->session
== NULL
)
4025 return s
->session
->psk_identity_hint
;
4028 const char *SSL_get_psk_identity(const SSL
*s
)
4030 if (s
== NULL
|| s
->session
== NULL
)
4032 return s
->session
->psk_identity
;
4035 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4037 s
->psk_client_callback
= cb
;
4040 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4042 ctx
->psk_client_callback
= cb
;
4045 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4047 s
->psk_server_callback
= cb
;
4050 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4052 ctx
->psk_server_callback
= cb
;
4056 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4058 s
->psk_find_session_cb
= cb
;
4061 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4062 SSL_psk_find_session_cb_func cb
)
4064 ctx
->psk_find_session_cb
= cb
;
4067 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4069 s
->psk_use_session_cb
= cb
;
4072 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4073 SSL_psk_use_session_cb_func cb
)
4075 ctx
->psk_use_session_cb
= cb
;
4078 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4079 void (*cb
) (int write_p
, int version
,
4080 int content_type
, const void *buf
,
4081 size_t len
, SSL
*ssl
, void *arg
))
4083 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4086 void SSL_set_msg_callback(SSL
*ssl
,
4087 void (*cb
) (int write_p
, int version
,
4088 int content_type
, const void *buf
,
4089 size_t len
, SSL
*ssl
, void *arg
))
4091 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4094 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4095 int (*cb
) (SSL
*ssl
,
4099 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4100 (void (*)(void))cb
);
4103 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4104 int (*cb
) (SSL
*ssl
,
4105 int is_forward_secure
))
4107 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4108 (void (*)(void))cb
);
4111 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4112 size_t (*cb
) (SSL
*ssl
, int type
,
4113 size_t len
, void *arg
))
4115 ctx
->record_padding_cb
= cb
;
4118 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4120 ctx
->record_padding_arg
= arg
;
4123 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4125 return ctx
->record_padding_arg
;
4128 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4130 /* block size of 0 or 1 is basically no padding */
4131 if (block_size
== 1)
4132 ctx
->block_padding
= 0;
4133 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4134 ctx
->block_padding
= block_size
;
4140 void SSL_set_record_padding_callback(SSL
*ssl
,
4141 size_t (*cb
) (SSL
*ssl
, int type
,
4142 size_t len
, void *arg
))
4144 ssl
->record_padding_cb
= cb
;
4147 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4149 ssl
->record_padding_arg
= arg
;
4152 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4154 return ssl
->record_padding_arg
;
4157 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4159 /* block size of 0 or 1 is basically no padding */
4160 if (block_size
== 1)
4161 ssl
->block_padding
= 0;
4162 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4163 ssl
->block_padding
= block_size
;
4170 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4171 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4172 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4173 * Returns the newly allocated ctx;
4176 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4178 ssl_clear_hash_ctx(hash
);
4179 *hash
= EVP_MD_CTX_new();
4180 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4181 EVP_MD_CTX_free(*hash
);
4188 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4191 EVP_MD_CTX_free(*hash
);
4195 /* Retrieve handshake hashes */
4196 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4199 EVP_MD_CTX
*ctx
= NULL
;
4200 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4201 int hashleni
= EVP_MD_CTX_size(hdgst
);
4204 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4205 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4206 ERR_R_INTERNAL_ERROR
);
4210 ctx
= EVP_MD_CTX_new();
4214 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4215 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4216 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4217 ERR_R_INTERNAL_ERROR
);
4221 *hashlen
= hashleni
;
4225 EVP_MD_CTX_free(ctx
);
4229 int SSL_session_reused(SSL
*s
)
4234 int SSL_is_server(const SSL
*s
)
4239 #if OPENSSL_API_COMPAT < 0x10100000L
4240 void SSL_set_debug(SSL
*s
, int debug
)
4242 /* Old function was do-nothing anyway... */
4248 void SSL_set_security_level(SSL
*s
, int level
)
4250 s
->cert
->sec_level
= level
;
4253 int SSL_get_security_level(const SSL
*s
)
4255 return s
->cert
->sec_level
;
4258 void SSL_set_security_callback(SSL
*s
,
4259 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4260 int op
, int bits
, int nid
,
4261 void *other
, void *ex
))
4263 s
->cert
->sec_cb
= cb
;
4266 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4267 const SSL_CTX
*ctx
, int op
,
4268 int bits
, int nid
, void *other
,
4270 return s
->cert
->sec_cb
;
4273 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4275 s
->cert
->sec_ex
= ex
;
4278 void *SSL_get0_security_ex_data(const SSL
*s
)
4280 return s
->cert
->sec_ex
;
4283 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4285 ctx
->cert
->sec_level
= level
;
4288 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4290 return ctx
->cert
->sec_level
;
4293 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4294 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4295 int op
, int bits
, int nid
,
4296 void *other
, void *ex
))
4298 ctx
->cert
->sec_cb
= cb
;
4301 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4307 return ctx
->cert
->sec_cb
;
4310 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4312 ctx
->cert
->sec_ex
= ex
;
4315 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4317 return ctx
->cert
->sec_ex
;
4321 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4322 * can return unsigned long, instead of the generic long return value from the
4323 * control interface.
4325 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4327 return ctx
->options
;
4330 unsigned long SSL_get_options(const SSL
*s
)
4335 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4337 return ctx
->options
|= op
;
4340 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4342 return s
->options
|= op
;
4345 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4347 return ctx
->options
&= ~op
;
4350 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4352 return s
->options
&= ~op
;
4355 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4357 return s
->verified_chain
;
4360 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4362 #ifndef OPENSSL_NO_CT
4365 * Moves SCTs from the |src| stack to the |dst| stack.
4366 * The source of each SCT will be set to |origin|.
4367 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4369 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4371 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4372 sct_source_t origin
)
4378 *dst
= sk_SCT_new_null();
4380 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4385 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4386 if (SCT_set_source(sct
, origin
) != 1)
4389 if (sk_SCT_push(*dst
, sct
) <= 0)
4397 sk_SCT_push(src
, sct
); /* Put the SCT back */
4402 * Look for data collected during ServerHello and parse if found.
4403 * Returns the number of SCTs extracted.
4405 static int ct_extract_tls_extension_scts(SSL
*s
)
4407 int scts_extracted
= 0;
4409 if (s
->ext
.scts
!= NULL
) {
4410 const unsigned char *p
= s
->ext
.scts
;
4411 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4413 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4415 SCT_LIST_free(scts
);
4418 return scts_extracted
;
4422 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4423 * contains an SCT X509 extension. They will be stored in |s->scts|.
4425 * - The number of SCTs extracted, assuming an OCSP response exists.
4426 * - 0 if no OCSP response exists or it contains no SCTs.
4427 * - A negative integer if an error occurs.
4429 static int ct_extract_ocsp_response_scts(SSL
*s
)
4431 # ifndef OPENSSL_NO_OCSP
4432 int scts_extracted
= 0;
4433 const unsigned char *p
;
4434 OCSP_BASICRESP
*br
= NULL
;
4435 OCSP_RESPONSE
*rsp
= NULL
;
4436 STACK_OF(SCT
) *scts
= NULL
;
4439 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4442 p
= s
->ext
.ocsp
.resp
;
4443 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4447 br
= OCSP_response_get1_basic(rsp
);
4451 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4452 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4458 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4460 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4461 if (scts_extracted
< 0)
4465 SCT_LIST_free(scts
);
4466 OCSP_BASICRESP_free(br
);
4467 OCSP_RESPONSE_free(rsp
);
4468 return scts_extracted
;
4470 /* Behave as if no OCSP response exists */
4476 * Attempts to extract SCTs from the peer certificate.
4477 * Return the number of SCTs extracted, or a negative integer if an error
4480 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4482 int scts_extracted
= 0;
4483 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4486 STACK_OF(SCT
) *scts
=
4487 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4490 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4492 SCT_LIST_free(scts
);
4495 return scts_extracted
;
4499 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4500 * response (if it exists) and X509v3 extensions in the certificate.
4501 * Returns NULL if an error occurs.
4503 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4505 if (!s
->scts_parsed
) {
4506 if (ct_extract_tls_extension_scts(s
) < 0 ||
4507 ct_extract_ocsp_response_scts(s
) < 0 ||
4508 ct_extract_x509v3_extension_scts(s
) < 0)
4518 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4519 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4524 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4525 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4527 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4530 for (i
= 0; i
< count
; ++i
) {
4531 SCT
*sct
= sk_SCT_value(scts
, i
);
4532 int status
= SCT_get_validation_status(sct
);
4534 if (status
== SCT_VALIDATION_STATUS_VALID
)
4537 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4541 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4545 * Since code exists that uses the custom extension handler for CT, look
4546 * for this and throw an error if they have already registered to use CT.
4548 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4549 TLSEXT_TYPE_signed_certificate_timestamp
))
4551 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4552 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4556 if (callback
!= NULL
) {
4558 * If we are validating CT, then we MUST accept SCTs served via OCSP
4560 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4564 s
->ct_validation_callback
= callback
;
4565 s
->ct_validation_callback_arg
= arg
;
4570 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4571 ssl_ct_validation_cb callback
, void *arg
)
4574 * Since code exists that uses the custom extension handler for CT, look for
4575 * this and throw an error if they have already registered to use CT.
4577 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4578 TLSEXT_TYPE_signed_certificate_timestamp
))
4580 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4581 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4585 ctx
->ct_validation_callback
= callback
;
4586 ctx
->ct_validation_callback_arg
= arg
;
4590 int SSL_ct_is_enabled(const SSL
*s
)
4592 return s
->ct_validation_callback
!= NULL
;
4595 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4597 return ctx
->ct_validation_callback
!= NULL
;
4600 int ssl_validate_ct(SSL
*s
)
4603 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4605 SSL_DANE
*dane
= &s
->dane
;
4606 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4607 const STACK_OF(SCT
) *scts
;
4610 * If no callback is set, the peer is anonymous, or its chain is invalid,
4611 * skip SCT validation - just return success. Applications that continue
4612 * handshakes without certificates, with unverified chains, or pinned leaf
4613 * certificates are outside the scope of the WebPKI and CT.
4615 * The above exclusions notwithstanding the vast majority of peers will
4616 * have rather ordinary certificate chains validated by typical
4617 * applications that perform certificate verification and therefore will
4618 * process SCTs when enabled.
4620 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4621 s
->verify_result
!= X509_V_OK
||
4622 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4626 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4627 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4629 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4630 switch (dane
->mtlsa
->usage
) {
4631 case DANETLS_USAGE_DANE_TA
:
4632 case DANETLS_USAGE_DANE_EE
:
4637 ctx
= CT_POLICY_EVAL_CTX_new();
4639 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
4640 ERR_R_MALLOC_FAILURE
);
4644 issuer
= sk_X509_value(s
->verified_chain
, 1);
4645 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4646 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4647 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4648 CT_POLICY_EVAL_CTX_set_time(
4649 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4651 scts
= SSL_get0_peer_scts(s
);
4654 * This function returns success (> 0) only when all the SCTs are valid, 0
4655 * when some are invalid, and < 0 on various internal errors (out of
4656 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4657 * reason to abort the handshake, that decision is up to the callback.
4658 * Therefore, we error out only in the unexpected case that the return
4659 * value is negative.
4661 * XXX: One might well argue that the return value of this function is an
4662 * unfortunate design choice. Its job is only to determine the validation
4663 * status of each of the provided SCTs. So long as it correctly separates
4664 * the wheat from the chaff it should return success. Failure in this case
4665 * ought to correspond to an inability to carry out its duties.
4667 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4668 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4669 SSL_R_SCT_VERIFICATION_FAILED
);
4673 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4675 ret
= 0; /* This function returns 0 on failure */
4677 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
4678 SSL_R_CALLBACK_FAILED
);
4681 CT_POLICY_EVAL_CTX_free(ctx
);
4683 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4684 * failure return code here. Also the application may wish the complete
4685 * the handshake, and then disconnect cleanly at a higher layer, after
4686 * checking the verification status of the completed connection.
4688 * We therefore force a certificate verification failure which will be
4689 * visible via SSL_get_verify_result() and cached as part of any resumed
4692 * Note: the permissive callback is for information gathering only, always
4693 * returns success, and does not affect verification status. Only the
4694 * strict callback or a custom application-specified callback can trigger
4695 * connection failure or record a verification error.
4698 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4702 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4704 switch (validation_mode
) {
4706 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4708 case SSL_CT_VALIDATION_PERMISSIVE
:
4709 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4710 case SSL_CT_VALIDATION_STRICT
:
4711 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4715 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4717 switch (validation_mode
) {
4719 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4721 case SSL_CT_VALIDATION_PERMISSIVE
:
4722 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4723 case SSL_CT_VALIDATION_STRICT
:
4724 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4728 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4730 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4733 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4735 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4738 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4740 CTLOG_STORE_free(ctx
->ctlog_store
);
4741 ctx
->ctlog_store
= logs
;
4744 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4746 return ctx
->ctlog_store
;
4749 #endif /* OPENSSL_NO_CT */
4751 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4754 c
->client_hello_cb
= cb
;
4755 c
->client_hello_cb_arg
= arg
;
4758 int SSL_client_hello_isv2(SSL
*s
)
4760 if (s
->clienthello
== NULL
)
4762 return s
->clienthello
->isv2
;
4765 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4767 if (s
->clienthello
== NULL
)
4769 return s
->clienthello
->legacy_version
;
4772 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4774 if (s
->clienthello
== NULL
)
4777 *out
= s
->clienthello
->random
;
4778 return SSL3_RANDOM_SIZE
;
4781 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4783 if (s
->clienthello
== NULL
)
4786 *out
= s
->clienthello
->session_id
;
4787 return s
->clienthello
->session_id_len
;
4790 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4792 if (s
->clienthello
== NULL
)
4795 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4796 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4799 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4801 if (s
->clienthello
== NULL
)
4804 *out
= s
->clienthello
->compressions
;
4805 return s
->clienthello
->compressions_len
;
4808 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4814 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4816 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4817 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4821 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4822 if (present
== NULL
)
4824 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4825 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4827 if (ext
->received_order
>= num
)
4829 present
[ext
->received_order
] = ext
->type
;
4836 OPENSSL_free(present
);
4840 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4846 if (s
->clienthello
== NULL
)
4848 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4849 r
= s
->clienthello
->pre_proc_exts
+ i
;
4850 if (r
->present
&& r
->type
== type
) {
4852 *out
= PACKET_data(&r
->data
);
4854 *outlen
= PACKET_remaining(&r
->data
);
4861 int SSL_free_buffers(SSL
*ssl
)
4863 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4865 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4868 RECORD_LAYER_release(rl
);
4872 int SSL_alloc_buffers(SSL
*ssl
)
4874 return ssl3_setup_buffers(ssl
);
4877 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4879 ctx
->keylog_callback
= cb
;
4882 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4884 return ctx
->keylog_callback
;
4887 static int nss_keylog_int(const char *prefix
,
4889 const uint8_t *parameter_1
,
4890 size_t parameter_1_len
,
4891 const uint8_t *parameter_2
,
4892 size_t parameter_2_len
)
4895 char *cursor
= NULL
;
4900 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4903 * Our output buffer will contain the following strings, rendered with
4904 * space characters in between, terminated by a NULL character: first the
4905 * prefix, then the first parameter, then the second parameter. The
4906 * meaning of each parameter depends on the specific key material being
4907 * logged. Note that the first and second parameters are encoded in
4908 * hexadecimal, so we need a buffer that is twice their lengths.
4910 prefix_len
= strlen(prefix
);
4911 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4912 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4913 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
4914 ERR_R_MALLOC_FAILURE
);
4918 strcpy(cursor
, prefix
);
4919 cursor
+= prefix_len
;
4922 for (i
= 0; i
< parameter_1_len
; i
++) {
4923 sprintf(cursor
, "%02x", parameter_1
[i
]);
4928 for (i
= 0; i
< parameter_2_len
; i
++) {
4929 sprintf(cursor
, "%02x", parameter_2
[i
]);
4934 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4940 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4941 const uint8_t *encrypted_premaster
,
4942 size_t encrypted_premaster_len
,
4943 const uint8_t *premaster
,
4944 size_t premaster_len
)
4946 if (encrypted_premaster_len
< 8) {
4947 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
4948 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4952 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4953 return nss_keylog_int("RSA",
4955 encrypted_premaster
,
4961 int ssl_log_secret(SSL
*ssl
,
4963 const uint8_t *secret
,
4966 return nss_keylog_int(label
,
4968 ssl
->s3
->client_random
,
4974 #define SSLV2_CIPHER_LEN 3
4976 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
4980 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4982 if (PACKET_remaining(cipher_suites
) == 0) {
4983 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
4984 SSL_R_NO_CIPHERS_SPECIFIED
);
4988 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4989 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
4990 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4994 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4995 s
->s3
->tmp
.ciphers_raw
= NULL
;
4996 s
->s3
->tmp
.ciphers_rawlen
= 0;
4999 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5000 PACKET sslv2ciphers
= *cipher_suites
;
5001 unsigned int leadbyte
;
5005 * We store the raw ciphers list in SSLv3+ format so we need to do some
5006 * preprocessing to convert the list first. If there are any SSLv2 only
5007 * ciphersuites with a non-zero leading byte then we are going to
5008 * slightly over allocate because we won't store those. But that isn't a
5011 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5012 s
->s3
->tmp
.ciphers_raw
= raw
;
5014 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5015 ERR_R_MALLOC_FAILURE
);
5018 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
5019 PACKET_remaining(&sslv2ciphers
) > 0;
5020 raw
+= TLS_CIPHER_LEN
) {
5021 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5023 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5026 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5027 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5029 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
5030 s
->s3
->tmp
.ciphers_raw
= NULL
;
5031 s
->s3
->tmp
.ciphers_rawlen
= 0;
5035 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5037 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5038 &s
->s3
->tmp
.ciphers_rawlen
)) {
5039 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5040 ERR_R_INTERNAL_ERROR
);
5046 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5047 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5048 STACK_OF(SSL_CIPHER
) **scsvs
)
5052 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5054 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5057 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5058 STACK_OF(SSL_CIPHER
) **skp
,
5059 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5060 int sslv2format
, int fatal
)
5062 const SSL_CIPHER
*c
;
5063 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5064 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5066 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5067 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5069 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5071 if (PACKET_remaining(cipher_suites
) == 0) {
5073 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5074 SSL_R_NO_CIPHERS_SPECIFIED
);
5076 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5080 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5082 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5083 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5085 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5086 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5090 sk
= sk_SSL_CIPHER_new_null();
5091 scsvs
= sk_SSL_CIPHER_new_null();
5092 if (sk
== NULL
|| scsvs
== NULL
) {
5094 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5095 ERR_R_MALLOC_FAILURE
);
5097 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5101 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5103 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5104 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5105 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5107 if (sslv2format
&& cipher
[0] != '\0')
5110 /* For SSLv2-compat, ignore leading 0-byte. */
5111 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5113 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5114 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5116 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5117 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5119 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5124 if (PACKET_remaining(cipher_suites
) > 0) {
5126 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5129 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5136 sk_SSL_CIPHER_free(sk
);
5137 if (scsvs_out
!= NULL
)
5140 sk_SSL_CIPHER_free(scsvs
);
5143 sk_SSL_CIPHER_free(sk
);
5144 sk_SSL_CIPHER_free(scsvs
);
5148 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5150 ctx
->max_early_data
= max_early_data
;
5155 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5157 return ctx
->max_early_data
;
5160 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5162 s
->max_early_data
= max_early_data
;
5167 uint32_t SSL_get_max_early_data(const SSL
*s
)
5169 return s
->max_early_data
;
5172 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5174 if (s
->drbg
!= NULL
) {
5176 * Currently, it's the duty of the caller to serialize the generate
5177 * requests to the DRBG. So formally we have to check whether
5178 * s->drbg->lock != NULL and take the lock if this is the case.
5179 * However, this DRBG is unique to a given SSL object, and we already
5180 * require that SSL objects are only accessed by a single thread at
5181 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5182 * no risk that this DRBG is accessed by a child DRBG in parallel
5183 * for reseeding. As such, we can rely on the application's
5184 * serialization of SSL accesses for the needed concurrency protection
5187 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5189 return RAND_bytes(rnd
, (int)size
);
5192 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5194 /* Return any active Max Fragment Len extension */
5195 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5196 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5198 /* return current SSL connection setting */
5199 return ssl
->max_send_fragment
;
5202 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5204 /* Return a value regarding an active Max Fragment Len extension */
5205 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5206 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5207 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5209 /* else limit |split_send_fragment| to current |max_send_fragment| */
5210 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5211 return ssl
->max_send_fragment
;
5213 /* return current SSL connection setting */
5214 return ssl
->split_send_fragment
;