2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/rand_drbg.h>
19 #include <openssl/ocsp.h>
20 #include <openssl/dh.h>
21 #include <openssl/engine.h>
22 #include <openssl/async.h>
23 #include <openssl/ct.h>
24 #include <openssl/trace.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_1(SSL
*ssl
, SSL3_RECORD
*r
, size_t s
, int t
)
34 return ssl_undefined_function(ssl
);
37 static int ssl_undefined_function_2(SSL
*ssl
, SSL3_RECORD
*r
, unsigned char *s
,
43 return ssl_undefined_function(ssl
);
46 static int ssl_undefined_function_3(SSL
*ssl
, unsigned char *r
,
47 unsigned char *s
, size_t t
, size_t *u
)
53 return ssl_undefined_function(ssl
);
56 static int ssl_undefined_function_4(SSL
*ssl
, int r
)
59 return ssl_undefined_function(ssl
);
62 static size_t ssl_undefined_function_5(SSL
*ssl
, const char *r
, size_t s
,
68 return ssl_undefined_function(ssl
);
71 static int ssl_undefined_function_6(int r
)
74 return ssl_undefined_function(NULL
);
77 static int ssl_undefined_function_7(SSL
*ssl
, unsigned char *r
, size_t s
,
78 const char *t
, size_t u
,
79 const unsigned char *v
, size_t w
, int x
)
88 return ssl_undefined_function(ssl
);
91 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
92 ssl_undefined_function_1
,
93 ssl_undefined_function_2
,
94 ssl_undefined_function
,
95 ssl_undefined_function_3
,
96 ssl_undefined_function_4
,
97 ssl_undefined_function_5
,
98 NULL
, /* client_finished_label */
99 0, /* client_finished_label_len */
100 NULL
, /* server_finished_label */
101 0, /* server_finished_label_len */
102 ssl_undefined_function_6
,
103 ssl_undefined_function_7
,
106 struct ssl_async_args
{
110 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
112 int (*func_read
) (SSL
*, void *, size_t, size_t *);
113 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
114 int (*func_other
) (SSL
*);
118 static const struct {
124 DANETLS_MATCHING_FULL
, 0, NID_undef
127 DANETLS_MATCHING_2256
, 1, NID_sha256
130 DANETLS_MATCHING_2512
, 2, NID_sha512
134 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
136 const EVP_MD
**mdevp
;
138 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
139 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
142 if (dctx
->mdevp
!= NULL
)
145 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
146 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
148 if (mdord
== NULL
|| mdevp
== NULL
) {
151 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
155 /* Install default entries */
156 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
159 if (dane_mds
[i
].nid
== NID_undef
||
160 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
162 mdevp
[dane_mds
[i
].mtype
] = md
;
163 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
173 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
175 OPENSSL_free(dctx
->mdevp
);
178 OPENSSL_free(dctx
->mdord
);
183 static void tlsa_free(danetls_record
*t
)
187 OPENSSL_free(t
->data
);
188 EVP_PKEY_free(t
->spki
);
192 static void dane_final(SSL_DANE
*dane
)
194 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
197 sk_X509_pop_free(dane
->certs
, X509_free
);
200 X509_free(dane
->mcert
);
208 * dane_copy - Copy dane configuration, sans verification state.
210 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
215 if (!DANETLS_ENABLED(&from
->dane
))
218 num
= sk_danetls_record_num(from
->dane
.trecs
);
219 dane_final(&to
->dane
);
220 to
->dane
.flags
= from
->dane
.flags
;
221 to
->dane
.dctx
= &to
->ctx
->dane
;
222 to
->dane
.trecs
= sk_danetls_record_new_reserve(NULL
, num
);
224 if (to
->dane
.trecs
== NULL
) {
225 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
229 for (i
= 0; i
< num
; ++i
) {
230 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
232 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
233 t
->data
, t
->dlen
) <= 0)
239 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
240 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
244 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
245 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
249 if (mtype
> dctx
->mdmax
) {
250 const EVP_MD
**mdevp
;
252 int n
= ((int)mtype
) + 1;
254 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
256 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
261 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
263 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
268 /* Zero-fill any gaps */
269 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
277 dctx
->mdevp
[mtype
] = md
;
278 /* Coerce ordinal of disabled matching types to 0 */
279 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
284 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
286 if (mtype
> dane
->dctx
->mdmax
)
288 return dane
->dctx
->mdevp
[mtype
];
291 static int dane_tlsa_add(SSL_DANE
*dane
,
294 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
297 const EVP_MD
*md
= NULL
;
298 int ilen
= (int)dlen
;
302 if (dane
->trecs
== NULL
) {
303 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
307 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
308 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
312 if (usage
> DANETLS_USAGE_LAST
) {
313 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
317 if (selector
> DANETLS_SELECTOR_LAST
) {
318 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
322 if (mtype
!= DANETLS_MATCHING_FULL
) {
323 md
= tlsa_md_get(dane
, mtype
);
325 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
330 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
331 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
335 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
339 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
340 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
345 t
->selector
= selector
;
347 t
->data
= OPENSSL_malloc(dlen
);
348 if (t
->data
== NULL
) {
350 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
353 memcpy(t
->data
, data
, dlen
);
356 /* Validate and cache full certificate or public key */
357 if (mtype
== DANETLS_MATCHING_FULL
) {
358 const unsigned char *p
= data
;
360 EVP_PKEY
*pkey
= NULL
;
363 case DANETLS_SELECTOR_CERT
:
364 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
365 dlen
!= (size_t)(p
- data
)) {
367 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
370 if (X509_get0_pubkey(cert
) == NULL
) {
372 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
376 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
382 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
383 * records that contain full certificates of trust-anchors that are
384 * not present in the wire chain. For usage PKIX-TA(0), we augment
385 * the chain with untrusted Full(0) certificates from DNS, in case
386 * they are missing from the chain.
388 if ((dane
->certs
== NULL
&&
389 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
390 !sk_X509_push(dane
->certs
, cert
)) {
391 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
398 case DANETLS_SELECTOR_SPKI
:
399 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
400 dlen
!= (size_t)(p
- data
)) {
402 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
407 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
408 * records that contain full bare keys of trust-anchors that are
409 * not present in the wire chain.
411 if (usage
== DANETLS_USAGE_DANE_TA
)
420 * Find the right insertion point for the new record.
422 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
423 * they can be processed first, as they require no chain building, and no
424 * expiration or hostname checks. Because DANE-EE(3) is numerically
425 * largest, this is accomplished via descending sort by "usage".
427 * We also sort in descending order by matching ordinal to simplify
428 * the implementation of digest agility in the verification code.
430 * The choice of order for the selector is not significant, so we
431 * use the same descending order for consistency.
433 num
= sk_danetls_record_num(dane
->trecs
);
434 for (i
= 0; i
< num
; ++i
) {
435 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
437 if (rec
->usage
> usage
)
439 if (rec
->usage
< usage
)
441 if (rec
->selector
> selector
)
443 if (rec
->selector
< selector
)
445 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
450 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
452 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
455 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
461 * Return 0 if there is only one version configured and it was disabled
462 * at configure time. Return 1 otherwise.
464 static int ssl_check_allowed_versions(int min_version
, int max_version
)
466 int minisdtls
= 0, maxisdtls
= 0;
468 /* Figure out if we're doing DTLS versions or TLS versions */
469 if (min_version
== DTLS1_BAD_VER
470 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
472 if (max_version
== DTLS1_BAD_VER
473 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
475 /* A wildcard version of 0 could be DTLS or TLS. */
476 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
477 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
478 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
482 if (minisdtls
|| maxisdtls
) {
483 /* Do DTLS version checks. */
484 if (min_version
== 0)
485 /* Ignore DTLS1_BAD_VER */
486 min_version
= DTLS1_VERSION
;
487 if (max_version
== 0)
488 max_version
= DTLS1_2_VERSION
;
489 #ifdef OPENSSL_NO_DTLS1_2
490 if (max_version
== DTLS1_2_VERSION
)
491 max_version
= DTLS1_VERSION
;
493 #ifdef OPENSSL_NO_DTLS1
494 if (min_version
== DTLS1_VERSION
)
495 min_version
= DTLS1_2_VERSION
;
497 /* Done massaging versions; do the check. */
499 #ifdef OPENSSL_NO_DTLS1
500 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
501 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
503 #ifdef OPENSSL_NO_DTLS1_2
504 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
505 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
510 /* Regular TLS version checks. */
511 if (min_version
== 0)
512 min_version
= SSL3_VERSION
;
513 if (max_version
== 0)
514 max_version
= TLS1_3_VERSION
;
515 #ifdef OPENSSL_NO_TLS1_3
516 if (max_version
== TLS1_3_VERSION
)
517 max_version
= TLS1_2_VERSION
;
519 #ifdef OPENSSL_NO_TLS1_2
520 if (max_version
== TLS1_2_VERSION
)
521 max_version
= TLS1_1_VERSION
;
523 #ifdef OPENSSL_NO_TLS1_1
524 if (max_version
== TLS1_1_VERSION
)
525 max_version
= TLS1_VERSION
;
527 #ifdef OPENSSL_NO_TLS1
528 if (max_version
== TLS1_VERSION
)
529 max_version
= SSL3_VERSION
;
531 #ifdef OPENSSL_NO_SSL3
532 if (min_version
== SSL3_VERSION
)
533 min_version
= TLS1_VERSION
;
535 #ifdef OPENSSL_NO_TLS1
536 if (min_version
== TLS1_VERSION
)
537 min_version
= TLS1_1_VERSION
;
539 #ifdef OPENSSL_NO_TLS1_1
540 if (min_version
== TLS1_1_VERSION
)
541 min_version
= TLS1_2_VERSION
;
543 #ifdef OPENSSL_NO_TLS1_2
544 if (min_version
== TLS1_2_VERSION
)
545 min_version
= TLS1_3_VERSION
;
547 /* Done massaging versions; do the check. */
549 #ifdef OPENSSL_NO_SSL3
550 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
552 #ifdef OPENSSL_NO_TLS1
553 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
555 #ifdef OPENSSL_NO_TLS1_1
556 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
558 #ifdef OPENSSL_NO_TLS1_2
559 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
561 #ifdef OPENSSL_NO_TLS1_3
562 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
570 static void clear_ciphers(SSL
*s
)
572 /* clear the current cipher */
573 ssl_clear_cipher_ctx(s
);
574 ssl_clear_hash_ctx(&s
->read_hash
);
575 ssl_clear_hash_ctx(&s
->write_hash
);
578 int SSL_clear(SSL
*s
)
580 if (s
->method
== NULL
) {
581 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
585 if (ssl_clear_bad_session(s
)) {
586 SSL_SESSION_free(s
->session
);
589 SSL_SESSION_free(s
->psksession
);
590 s
->psksession
= NULL
;
591 OPENSSL_free(s
->psksession_id
);
592 s
->psksession_id
= NULL
;
593 s
->psksession_id_len
= 0;
594 s
->hello_retry_request
= 0;
601 if (s
->renegotiate
) {
602 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
606 ossl_statem_clear(s
);
608 s
->version
= s
->method
->version
;
609 s
->client_version
= s
->version
;
610 s
->rwstate
= SSL_NOTHING
;
612 BUF_MEM_free(s
->init_buf
);
617 s
->key_update
= SSL_KEY_UPDATE_NONE
;
619 EVP_MD_CTX_free(s
->pha_dgst
);
622 /* Reset DANE verification result state */
625 X509_free(s
->dane
.mcert
);
626 s
->dane
.mcert
= NULL
;
627 s
->dane
.mtlsa
= NULL
;
629 /* Clear the verification result peername */
630 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
632 /* Clear any shared connection state */
633 OPENSSL_free(s
->shared_sigalgs
);
634 s
->shared_sigalgs
= NULL
;
635 s
->shared_sigalgslen
= 0;
638 * Check to see if we were changed into a different method, if so, revert
641 if (s
->method
!= s
->ctx
->method
) {
642 s
->method
->ssl_free(s
);
643 s
->method
= s
->ctx
->method
;
644 if (!s
->method
->ssl_new(s
))
647 if (!s
->method
->ssl_clear(s
))
651 RECORD_LAYER_clear(&s
->rlayer
);
656 /** Used to change an SSL_CTXs default SSL method type */
657 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
659 STACK_OF(SSL_CIPHER
) *sk
;
663 if (!SSL_CTX_set_ciphersuites(ctx
, OSSL_default_ciphersuites())) {
664 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
667 sk
= ssl_create_cipher_list(ctx
->method
,
668 ctx
->tls13_ciphersuites
,
670 &(ctx
->cipher_list_by_id
),
671 OSSL_default_cipher_list(), ctx
->cert
);
672 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
673 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
679 SSL
*SSL_new(SSL_CTX
*ctx
)
684 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
687 if (ctx
->method
== NULL
) {
688 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
692 s
= OPENSSL_zalloc(sizeof(*s
));
697 s
->lock
= CRYPTO_THREAD_lock_new();
698 if (s
->lock
== NULL
) {
704 RECORD_LAYER_init(&s
->rlayer
, s
);
706 s
->options
= ctx
->options
;
707 s
->dane
.flags
= ctx
->dane
.flags
;
708 s
->min_proto_version
= ctx
->min_proto_version
;
709 s
->max_proto_version
= ctx
->max_proto_version
;
711 s
->max_cert_list
= ctx
->max_cert_list
;
712 s
->max_early_data
= ctx
->max_early_data
;
713 s
->recv_max_early_data
= ctx
->recv_max_early_data
;
714 s
->num_tickets
= ctx
->num_tickets
;
715 s
->pha_enabled
= ctx
->pha_enabled
;
717 /* Shallow copy of the ciphersuites stack */
718 s
->tls13_ciphersuites
= sk_SSL_CIPHER_dup(ctx
->tls13_ciphersuites
);
719 if (s
->tls13_ciphersuites
== NULL
)
723 * Earlier library versions used to copy the pointer to the CERT, not
724 * its contents; only when setting new parameters for the per-SSL
725 * copy, ssl_cert_new would be called (and the direct reference to
726 * the per-SSL_CTX settings would be lost, but those still were
727 * indirectly accessed for various purposes, and for that reason they
728 * used to be known as s->ctx->default_cert). Now we don't look at the
729 * SSL_CTX's CERT after having duplicated it once.
731 s
->cert
= ssl_cert_dup(ctx
->cert
);
735 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
736 s
->msg_callback
= ctx
->msg_callback
;
737 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
738 s
->verify_mode
= ctx
->verify_mode
;
739 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
740 s
->record_padding_cb
= ctx
->record_padding_cb
;
741 s
->record_padding_arg
= ctx
->record_padding_arg
;
742 s
->block_padding
= ctx
->block_padding
;
743 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
744 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
746 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
747 s
->verify_callback
= ctx
->default_verify_callback
;
748 s
->generate_session_id
= ctx
->generate_session_id
;
750 s
->param
= X509_VERIFY_PARAM_new();
751 if (s
->param
== NULL
)
753 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
754 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
756 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
757 s
->max_send_fragment
= ctx
->max_send_fragment
;
758 s
->split_send_fragment
= ctx
->split_send_fragment
;
759 s
->max_pipelines
= ctx
->max_pipelines
;
760 if (s
->max_pipelines
> 1)
761 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
762 if (ctx
->default_read_buf_len
> 0)
763 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
768 s
->ext
.debug_arg
= NULL
;
769 s
->ext
.ticket_expected
= 0;
770 s
->ext
.status_type
= ctx
->ext
.status_type
;
771 s
->ext
.status_expected
= 0;
772 s
->ext
.ocsp
.ids
= NULL
;
773 s
->ext
.ocsp
.exts
= NULL
;
774 s
->ext
.ocsp
.resp
= NULL
;
775 s
->ext
.ocsp
.resp_len
= 0;
777 s
->session_ctx
= ctx
;
778 #ifndef OPENSSL_NO_EC
779 if (ctx
->ext
.ecpointformats
) {
780 s
->ext
.ecpointformats
=
781 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
782 ctx
->ext
.ecpointformats_len
);
783 if (!s
->ext
.ecpointformats
)
785 s
->ext
.ecpointformats_len
=
786 ctx
->ext
.ecpointformats_len
;
789 if (ctx
->ext
.supportedgroups
) {
790 s
->ext
.supportedgroups
=
791 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
792 ctx
->ext
.supportedgroups_len
793 * sizeof(*ctx
->ext
.supportedgroups
));
794 if (!s
->ext
.supportedgroups
)
796 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
799 #ifndef OPENSSL_NO_NEXTPROTONEG
803 if (s
->ctx
->ext
.alpn
) {
804 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
805 if (s
->ext
.alpn
== NULL
)
807 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
808 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
811 s
->verified_chain
= NULL
;
812 s
->verify_result
= X509_V_OK
;
814 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
815 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
817 s
->method
= ctx
->method
;
819 s
->key_update
= SSL_KEY_UPDATE_NONE
;
821 s
->allow_early_data_cb
= ctx
->allow_early_data_cb
;
822 s
->allow_early_data_cb_data
= ctx
->allow_early_data_cb_data
;
824 if (!s
->method
->ssl_new(s
))
827 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
832 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
835 #ifndef OPENSSL_NO_PSK
836 s
->psk_client_callback
= ctx
->psk_client_callback
;
837 s
->psk_server_callback
= ctx
->psk_server_callback
;
839 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
840 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
842 s
->async_cb
= ctx
->async_cb
;
843 s
->async_cb_arg
= ctx
->async_cb_arg
;
847 #ifndef OPENSSL_NO_CT
848 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
849 ctx
->ct_validation_callback_arg
))
856 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
860 int SSL_is_dtls(const SSL
*s
)
862 return SSL_IS_DTLS(s
) ? 1 : 0;
865 int SSL_up_ref(SSL
*s
)
869 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
872 REF_PRINT_COUNT("SSL", s
);
873 REF_ASSERT_ISNT(i
< 2);
874 return ((i
> 1) ? 1 : 0);
877 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
878 unsigned int sid_ctx_len
)
880 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
881 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
882 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
885 ctx
->sid_ctx_length
= sid_ctx_len
;
886 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
891 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
892 unsigned int sid_ctx_len
)
894 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
895 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
896 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
899 ssl
->sid_ctx_length
= sid_ctx_len
;
900 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
905 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
907 CRYPTO_THREAD_write_lock(ctx
->lock
);
908 ctx
->generate_session_id
= cb
;
909 CRYPTO_THREAD_unlock(ctx
->lock
);
913 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
915 CRYPTO_THREAD_write_lock(ssl
->lock
);
916 ssl
->generate_session_id
= cb
;
917 CRYPTO_THREAD_unlock(ssl
->lock
);
921 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
925 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
926 * we can "construct" a session to give us the desired check - i.e. to
927 * find if there's a session in the hash table that would conflict with
928 * any new session built out of this id/id_len and the ssl_version in use
933 if (id_len
> sizeof(r
.session_id
))
936 r
.ssl_version
= ssl
->version
;
937 r
.session_id_length
= id_len
;
938 memcpy(r
.session_id
, id
, id_len
);
940 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
941 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
942 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
946 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
948 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
951 int SSL_set_purpose(SSL
*s
, int purpose
)
953 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
956 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
958 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
961 int SSL_set_trust(SSL
*s
, int trust
)
963 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
966 int SSL_set1_host(SSL
*s
, const char *hostname
)
968 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
971 int SSL_add1_host(SSL
*s
, const char *hostname
)
973 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
976 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
978 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
981 const char *SSL_get0_peername(SSL
*s
)
983 return X509_VERIFY_PARAM_get0_peername(s
->param
);
986 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
988 return dane_ctx_enable(&ctx
->dane
);
991 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
993 unsigned long orig
= ctx
->dane
.flags
;
995 ctx
->dane
.flags
|= flags
;
999 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
1001 unsigned long orig
= ctx
->dane
.flags
;
1003 ctx
->dane
.flags
&= ~flags
;
1007 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
1009 SSL_DANE
*dane
= &s
->dane
;
1011 if (s
->ctx
->dane
.mdmax
== 0) {
1012 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
1015 if (dane
->trecs
!= NULL
) {
1016 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1021 * Default SNI name. This rejects empty names, while set1_host below
1022 * accepts them and disables host name checks. To avoid side-effects with
1023 * invalid input, set the SNI name first.
1025 if (s
->ext
.hostname
== NULL
) {
1026 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1027 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1032 /* Primary RFC6125 reference identifier */
1033 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1034 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1040 dane
->dctx
= &s
->ctx
->dane
;
1041 dane
->trecs
= sk_danetls_record_new_null();
1043 if (dane
->trecs
== NULL
) {
1044 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1050 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1052 unsigned long orig
= ssl
->dane
.flags
;
1054 ssl
->dane
.flags
|= flags
;
1058 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1060 unsigned long orig
= ssl
->dane
.flags
;
1062 ssl
->dane
.flags
&= ~flags
;
1066 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1068 SSL_DANE
*dane
= &s
->dane
;
1070 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1074 *mcert
= dane
->mcert
;
1076 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1081 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1082 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1084 SSL_DANE
*dane
= &s
->dane
;
1086 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1090 *usage
= dane
->mtlsa
->usage
;
1092 *selector
= dane
->mtlsa
->selector
;
1094 *mtype
= dane
->mtlsa
->mtype
;
1096 *data
= dane
->mtlsa
->data
;
1098 *dlen
= dane
->mtlsa
->dlen
;
1103 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1108 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1109 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1111 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1114 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1117 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1120 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1122 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1125 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1127 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1130 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1135 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1140 void SSL_certs_clear(SSL
*s
)
1142 ssl_cert_clear_certs(s
->cert
);
1145 void SSL_free(SSL
*s
)
1151 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1152 REF_PRINT_COUNT("SSL", s
);
1155 REF_ASSERT_ISNT(i
< 0);
1157 X509_VERIFY_PARAM_free(s
->param
);
1158 dane_final(&s
->dane
);
1159 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1161 RECORD_LAYER_release(&s
->rlayer
);
1163 /* Ignore return value */
1164 ssl_free_wbio_buffer(s
);
1166 BIO_free_all(s
->wbio
);
1168 BIO_free_all(s
->rbio
);
1171 BUF_MEM_free(s
->init_buf
);
1173 /* add extra stuff */
1174 sk_SSL_CIPHER_free(s
->cipher_list
);
1175 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1176 sk_SSL_CIPHER_free(s
->tls13_ciphersuites
);
1177 sk_SSL_CIPHER_free(s
->peer_ciphers
);
1179 /* Make the next call work :-) */
1180 if (s
->session
!= NULL
) {
1181 ssl_clear_bad_session(s
);
1182 SSL_SESSION_free(s
->session
);
1184 SSL_SESSION_free(s
->psksession
);
1185 OPENSSL_free(s
->psksession_id
);
1189 ssl_cert_free(s
->cert
);
1190 OPENSSL_free(s
->shared_sigalgs
);
1191 /* Free up if allocated */
1193 OPENSSL_free(s
->ext
.hostname
);
1194 SSL_CTX_free(s
->session_ctx
);
1195 #ifndef OPENSSL_NO_EC
1196 OPENSSL_free(s
->ext
.ecpointformats
);
1197 OPENSSL_free(s
->ext
.peer_ecpointformats
);
1198 OPENSSL_free(s
->ext
.supportedgroups
);
1199 OPENSSL_free(s
->ext
.peer_supportedgroups
);
1200 #endif /* OPENSSL_NO_EC */
1201 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1202 #ifndef OPENSSL_NO_OCSP
1203 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1205 #ifndef OPENSSL_NO_CT
1206 SCT_LIST_free(s
->scts
);
1207 OPENSSL_free(s
->ext
.scts
);
1209 OPENSSL_free(s
->ext
.ocsp
.resp
);
1210 OPENSSL_free(s
->ext
.alpn
);
1211 OPENSSL_free(s
->ext
.tls13_cookie
);
1212 OPENSSL_free(s
->clienthello
);
1213 OPENSSL_free(s
->pha_context
);
1214 EVP_MD_CTX_free(s
->pha_dgst
);
1216 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1217 sk_X509_NAME_pop_free(s
->client_ca_names
, X509_NAME_free
);
1219 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1221 if (s
->method
!= NULL
)
1222 s
->method
->ssl_free(s
);
1224 SSL_CTX_free(s
->ctx
);
1226 ASYNC_WAIT_CTX_free(s
->waitctx
);
1228 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1229 OPENSSL_free(s
->ext
.npn
);
1232 #ifndef OPENSSL_NO_SRTP
1233 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1236 CRYPTO_THREAD_lock_free(s
->lock
);
1241 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1243 BIO_free_all(s
->rbio
);
1247 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1250 * If the output buffering BIO is still in place, remove it
1252 if (s
->bbio
!= NULL
)
1253 s
->wbio
= BIO_pop(s
->wbio
);
1255 BIO_free_all(s
->wbio
);
1258 /* Re-attach |bbio| to the new |wbio|. */
1259 if (s
->bbio
!= NULL
)
1260 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1263 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1266 * For historical reasons, this function has many different cases in
1267 * ownership handling.
1270 /* If nothing has changed, do nothing */
1271 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1275 * If the two arguments are equal then one fewer reference is granted by the
1276 * caller than we want to take
1278 if (rbio
!= NULL
&& rbio
== wbio
)
1282 * If only the wbio is changed only adopt one reference.
1284 if (rbio
== SSL_get_rbio(s
)) {
1285 SSL_set0_wbio(s
, wbio
);
1289 * There is an asymmetry here for historical reasons. If only the rbio is
1290 * changed AND the rbio and wbio were originally different, then we only
1291 * adopt one reference.
1293 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1294 SSL_set0_rbio(s
, rbio
);
1298 /* Otherwise, adopt both references. */
1299 SSL_set0_rbio(s
, rbio
);
1300 SSL_set0_wbio(s
, wbio
);
1303 BIO
*SSL_get_rbio(const SSL
*s
)
1308 BIO
*SSL_get_wbio(const SSL
*s
)
1310 if (s
->bbio
!= NULL
) {
1312 * If |bbio| is active, the true caller-configured BIO is its
1315 return BIO_next(s
->bbio
);
1320 int SSL_get_fd(const SSL
*s
)
1322 return SSL_get_rfd(s
);
1325 int SSL_get_rfd(const SSL
*s
)
1330 b
= SSL_get_rbio(s
);
1331 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1333 BIO_get_fd(r
, &ret
);
1337 int SSL_get_wfd(const SSL
*s
)
1342 b
= SSL_get_wbio(s
);
1343 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1345 BIO_get_fd(r
, &ret
);
1349 #ifndef OPENSSL_NO_SOCK
1350 int SSL_set_fd(SSL
*s
, int fd
)
1355 bio
= BIO_new(BIO_s_socket());
1358 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1361 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1362 SSL_set_bio(s
, bio
, bio
);
1363 #ifndef OPENSSL_NO_KTLS
1365 * The new socket is created successfully regardless of ktls_enable.
1366 * ktls_enable doesn't change any functionality of the socket, except
1367 * changing the setsockopt to enable the processing of ktls_start.
1368 * Thus, it is not a problem to call it for non-TLS sockets.
1371 #endif /* OPENSSL_NO_KTLS */
1377 int SSL_set_wfd(SSL
*s
, int fd
)
1379 BIO
*rbio
= SSL_get_rbio(s
);
1381 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1382 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1383 BIO
*bio
= BIO_new(BIO_s_socket());
1386 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1389 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1390 SSL_set0_wbio(s
, bio
);
1391 #ifndef OPENSSL_NO_KTLS
1393 * The new socket is created successfully regardless of ktls_enable.
1394 * ktls_enable doesn't change any functionality of the socket, except
1395 * changing the setsockopt to enable the processing of ktls_start.
1396 * Thus, it is not a problem to call it for non-TLS sockets.
1399 #endif /* OPENSSL_NO_KTLS */
1402 SSL_set0_wbio(s
, rbio
);
1407 int SSL_set_rfd(SSL
*s
, int fd
)
1409 BIO
*wbio
= SSL_get_wbio(s
);
1411 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1412 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1413 BIO
*bio
= BIO_new(BIO_s_socket());
1416 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1419 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1420 SSL_set0_rbio(s
, bio
);
1423 SSL_set0_rbio(s
, wbio
);
1430 /* return length of latest Finished message we sent, copy to 'buf' */
1431 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1435 ret
= s
->s3
.tmp
.finish_md_len
;
1438 memcpy(buf
, s
->s3
.tmp
.finish_md
, count
);
1442 /* return length of latest Finished message we expected, copy to 'buf' */
1443 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1447 ret
= s
->s3
.tmp
.peer_finish_md_len
;
1450 memcpy(buf
, s
->s3
.tmp
.peer_finish_md
, count
);
1454 int SSL_get_verify_mode(const SSL
*s
)
1456 return s
->verify_mode
;
1459 int SSL_get_verify_depth(const SSL
*s
)
1461 return X509_VERIFY_PARAM_get_depth(s
->param
);
1464 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1465 return s
->verify_callback
;
1468 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1470 return ctx
->verify_mode
;
1473 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1475 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1478 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1479 return ctx
->default_verify_callback
;
1482 void SSL_set_verify(SSL
*s
, int mode
,
1483 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1485 s
->verify_mode
= mode
;
1486 if (callback
!= NULL
)
1487 s
->verify_callback
= callback
;
1490 void SSL_set_verify_depth(SSL
*s
, int depth
)
1492 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1495 void SSL_set_read_ahead(SSL
*s
, int yes
)
1497 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1500 int SSL_get_read_ahead(const SSL
*s
)
1502 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1505 int SSL_pending(const SSL
*s
)
1507 size_t pending
= s
->method
->ssl_pending(s
);
1510 * SSL_pending cannot work properly if read-ahead is enabled
1511 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1512 * impossible to fix since SSL_pending cannot report errors that may be
1513 * observed while scanning the new data. (Note that SSL_pending() is
1514 * often used as a boolean value, so we'd better not return -1.)
1516 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1517 * we just return INT_MAX.
1519 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1522 int SSL_has_pending(const SSL
*s
)
1525 * Similar to SSL_pending() but returns a 1 to indicate that we have
1526 * unprocessed data available or 0 otherwise (as opposed to the number of
1527 * bytes available). Unlike SSL_pending() this will take into account
1528 * read_ahead data. A 1 return simply indicates that we have unprocessed
1529 * data. That data may not result in any application data, or we may fail
1530 * to parse the records for some reason.
1532 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1535 return RECORD_LAYER_read_pending(&s
->rlayer
);
1538 X509
*SSL_get_peer_certificate(const SSL
*s
)
1542 if ((s
== NULL
) || (s
->session
== NULL
))
1545 r
= s
->session
->peer
;
1555 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1559 if ((s
== NULL
) || (s
->session
== NULL
))
1562 r
= s
->session
->peer_chain
;
1565 * If we are a client, cert_chain includes the peer's own certificate; if
1566 * we are a server, it does not.
1573 * Now in theory, since the calling process own 't' it should be safe to
1574 * modify. We need to be able to read f without being hassled
1576 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1579 /* Do we need to to SSL locking? */
1580 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1585 * what if we are setup for one protocol version but want to talk another
1587 if (t
->method
!= f
->method
) {
1588 t
->method
->ssl_free(t
);
1589 t
->method
= f
->method
;
1590 if (t
->method
->ssl_new(t
) == 0)
1594 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1595 ssl_cert_free(t
->cert
);
1597 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1604 /* Fix this so it checks all the valid key/cert options */
1605 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1607 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1608 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1611 if (ctx
->cert
->key
->privatekey
== NULL
) {
1612 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1615 return X509_check_private_key
1616 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1619 /* Fix this function so that it takes an optional type parameter */
1620 int SSL_check_private_key(const SSL
*ssl
)
1623 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1626 if (ssl
->cert
->key
->x509
== NULL
) {
1627 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1630 if (ssl
->cert
->key
->privatekey
== NULL
) {
1631 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1634 return X509_check_private_key(ssl
->cert
->key
->x509
,
1635 ssl
->cert
->key
->privatekey
);
1638 int SSL_waiting_for_async(SSL
*s
)
1646 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1648 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1652 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1655 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1656 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1658 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1662 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1666 int SSL_CTX_set_async_callback(SSL_CTX
*ctx
, SSL_async_callback_fn callback
)
1668 ctx
->async_cb
= callback
;
1672 int SSL_CTX_set_async_callback_arg(SSL_CTX
*ctx
, void *arg
)
1674 ctx
->async_cb_arg
= arg
;
1678 int SSL_set_async_callback(SSL
*s
, SSL_async_callback_fn callback
)
1680 s
->async_cb
= callback
;
1684 int SSL_set_async_callback_arg(SSL
*s
, void *arg
)
1686 s
->async_cb_arg
= arg
;
1690 int SSL_get_async_status(SSL
*s
, int *status
)
1692 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1696 *status
= ASYNC_WAIT_CTX_get_status(ctx
);
1700 int SSL_accept(SSL
*s
)
1702 if (s
->handshake_func
== NULL
) {
1703 /* Not properly initialized yet */
1704 SSL_set_accept_state(s
);
1707 return SSL_do_handshake(s
);
1710 int SSL_connect(SSL
*s
)
1712 if (s
->handshake_func
== NULL
) {
1713 /* Not properly initialized yet */
1714 SSL_set_connect_state(s
);
1717 return SSL_do_handshake(s
);
1720 long SSL_get_default_timeout(const SSL
*s
)
1722 return s
->method
->get_timeout();
1725 static int ssl_async_wait_ctx_cb(void *arg
)
1727 SSL
*s
= (SSL
*)arg
;
1729 return s
->async_cb(s
, s
->async_cb_arg
);
1732 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1733 int (*func
) (void *))
1736 if (s
->waitctx
== NULL
) {
1737 s
->waitctx
= ASYNC_WAIT_CTX_new();
1738 if (s
->waitctx
== NULL
)
1740 if (s
->async_cb
!= NULL
1741 && !ASYNC_WAIT_CTX_set_callback
1742 (s
->waitctx
, ssl_async_wait_ctx_cb
, s
))
1745 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1746 sizeof(struct ssl_async_args
))) {
1748 s
->rwstate
= SSL_NOTHING
;
1749 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1752 s
->rwstate
= SSL_ASYNC_PAUSED
;
1755 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1761 s
->rwstate
= SSL_NOTHING
;
1762 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1763 /* Shouldn't happen */
1768 static int ssl_io_intern(void *vargs
)
1770 struct ssl_async_args
*args
;
1775 args
= (struct ssl_async_args
*)vargs
;
1779 switch (args
->type
) {
1781 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1783 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1785 return args
->f
.func_other(s
);
1790 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1792 if (s
->handshake_func
== NULL
) {
1793 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1797 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1798 s
->rwstate
= SSL_NOTHING
;
1802 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1803 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1804 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1808 * If we are a client and haven't received the ServerHello etc then we
1811 ossl_statem_check_finish_init(s
, 0);
1813 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1814 struct ssl_async_args args
;
1820 args
.type
= READFUNC
;
1821 args
.f
.func_read
= s
->method
->ssl_read
;
1823 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1824 *readbytes
= s
->asyncrw
;
1827 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1831 int SSL_read(SSL
*s
, void *buf
, int num
)
1837 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1841 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1844 * The cast is safe here because ret should be <= INT_MAX because num is
1848 ret
= (int)readbytes
;
1853 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1855 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1862 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1867 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1868 return SSL_READ_EARLY_DATA_ERROR
;
1871 switch (s
->early_data_state
) {
1872 case SSL_EARLY_DATA_NONE
:
1873 if (!SSL_in_before(s
)) {
1874 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1875 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1876 return SSL_READ_EARLY_DATA_ERROR
;
1880 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1881 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1882 ret
= SSL_accept(s
);
1885 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1886 return SSL_READ_EARLY_DATA_ERROR
;
1890 case SSL_EARLY_DATA_READ_RETRY
:
1891 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1892 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1893 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1895 * State machine will update early_data_state to
1896 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1899 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1900 != SSL_EARLY_DATA_FINISHED_READING
)) {
1901 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1902 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1903 : SSL_READ_EARLY_DATA_ERROR
;
1906 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1909 return SSL_READ_EARLY_DATA_FINISH
;
1912 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1913 return SSL_READ_EARLY_DATA_ERROR
;
1917 int SSL_get_early_data_status(const SSL
*s
)
1919 return s
->ext
.early_data
;
1922 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1924 if (s
->handshake_func
== NULL
) {
1925 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1929 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1932 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1933 struct ssl_async_args args
;
1939 args
.type
= READFUNC
;
1940 args
.f
.func_read
= s
->method
->ssl_peek
;
1942 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1943 *readbytes
= s
->asyncrw
;
1946 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1950 int SSL_peek(SSL
*s
, void *buf
, int num
)
1956 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1960 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1963 * The cast is safe here because ret should be <= INT_MAX because num is
1967 ret
= (int)readbytes
;
1973 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1975 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1982 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1984 if (s
->handshake_func
== NULL
) {
1985 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1989 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1990 s
->rwstate
= SSL_NOTHING
;
1991 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1995 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1996 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1997 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1998 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2001 /* If we are a client and haven't sent the Finished we better do that */
2002 ossl_statem_check_finish_init(s
, 1);
2004 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2006 struct ssl_async_args args
;
2009 args
.buf
= (void *)buf
;
2011 args
.type
= WRITEFUNC
;
2012 args
.f
.func_write
= s
->method
->ssl_write
;
2014 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
2015 *written
= s
->asyncrw
;
2018 return s
->method
->ssl_write(s
, buf
, num
, written
);
2022 ossl_ssize_t
SSL_sendfile(SSL
*s
, int fd
, off_t offset
, size_t size
, int flags
)
2026 if (s
->handshake_func
== NULL
) {
2027 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2031 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2032 s
->rwstate
= SSL_NOTHING
;
2033 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2037 if (!BIO_get_ktls_send(s
->wbio
)) {
2038 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2042 /* If we have an alert to send, lets send it */
2043 if (s
->s3
.alert_dispatch
) {
2044 ret
= (ossl_ssize_t
)s
->method
->ssl_dispatch_alert(s
);
2046 /* SSLfatal() already called if appropriate */
2049 /* if it went, fall through and send more stuff */
2052 s
->rwstate
= SSL_WRITING
;
2053 if (BIO_flush(s
->wbio
) <= 0) {
2054 if (!BIO_should_retry(s
->wbio
)) {
2055 s
->rwstate
= SSL_NOTHING
;
2058 set_sys_error(EAGAIN
);
2064 #ifndef OPENSSL_NO_KTLS
2065 ret
= ktls_sendfile(SSL_get_wfd(s
), fd
, offset
, size
, flags
);
2070 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2071 if ((get_last_sys_error() == EAGAIN
) ||
2072 (get_last_sys_error() == EINTR
) ||
2073 (get_last_sys_error() == EBUSY
))
2074 BIO_set_retry_write(s
->wbio
);
2077 #ifdef OPENSSL_NO_KTLS
2078 FUNCerr("sendfile", get_last_sys_error());
2080 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2084 s
->rwstate
= SSL_NOTHING
;
2088 int SSL_write(SSL
*s
, const void *buf
, int num
)
2094 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
2098 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
2101 * The cast is safe here because ret should be <= INT_MAX because num is
2110 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2112 int ret
= ssl_write_internal(s
, buf
, num
, written
);
2119 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2121 int ret
, early_data_state
;
2123 uint32_t partialwrite
;
2125 switch (s
->early_data_state
) {
2126 case SSL_EARLY_DATA_NONE
:
2128 || !SSL_in_before(s
)
2129 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
2130 && (s
->psk_use_session_cb
== NULL
))) {
2131 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
2132 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2137 case SSL_EARLY_DATA_CONNECT_RETRY
:
2138 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
2139 ret
= SSL_connect(s
);
2142 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
2147 case SSL_EARLY_DATA_WRITE_RETRY
:
2148 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2150 * We disable partial write for early data because we don't keep track
2151 * of how many bytes we've written between the SSL_write_ex() call and
2152 * the flush if the flush needs to be retried)
2154 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2155 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2156 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2157 s
->mode
|= partialwrite
;
2159 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2162 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2165 case SSL_EARLY_DATA_WRITE_FLUSH
:
2166 /* The buffering BIO is still in place so we need to flush it */
2167 if (statem_flush(s
) != 1)
2170 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2173 case SSL_EARLY_DATA_FINISHED_READING
:
2174 case SSL_EARLY_DATA_READ_RETRY
:
2175 early_data_state
= s
->early_data_state
;
2176 /* We are a server writing to an unauthenticated client */
2177 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2178 ret
= SSL_write_ex(s
, buf
, num
, written
);
2179 /* The buffering BIO is still in place */
2181 (void)BIO_flush(s
->wbio
);
2182 s
->early_data_state
= early_data_state
;
2186 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2191 int SSL_shutdown(SSL
*s
)
2194 * Note that this function behaves differently from what one might
2195 * expect. Return values are 0 for no success (yet), 1 for success; but
2196 * calling it once is usually not enough, even if blocking I/O is used
2197 * (see ssl3_shutdown).
2200 if (s
->handshake_func
== NULL
) {
2201 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2205 if (!SSL_in_init(s
)) {
2206 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2207 struct ssl_async_args args
;
2210 args
.type
= OTHERFUNC
;
2211 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2213 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2215 return s
->method
->ssl_shutdown(s
);
2218 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2223 int SSL_key_update(SSL
*s
, int updatetype
)
2226 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2227 * negotiated, and that it is appropriate to call SSL_key_update() instead
2228 * of SSL_renegotiate().
2230 if (!SSL_IS_TLS13(s
)) {
2231 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2235 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2236 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2237 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2241 if (!SSL_is_init_finished(s
)) {
2242 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2246 ossl_statem_set_in_init(s
, 1);
2247 s
->key_update
= updatetype
;
2251 int SSL_get_key_update_type(const SSL
*s
)
2253 return s
->key_update
;
2256 int SSL_renegotiate(SSL
*s
)
2258 if (SSL_IS_TLS13(s
)) {
2259 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2263 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2264 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2271 return s
->method
->ssl_renegotiate(s
);
2274 int SSL_renegotiate_abbreviated(SSL
*s
)
2276 if (SSL_IS_TLS13(s
)) {
2277 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2281 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2282 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2289 return s
->method
->ssl_renegotiate(s
);
2292 int SSL_renegotiate_pending(const SSL
*s
)
2295 * becomes true when negotiation is requested; false again once a
2296 * handshake has finished
2298 return (s
->renegotiate
!= 0);
2301 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2306 case SSL_CTRL_GET_READ_AHEAD
:
2307 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2308 case SSL_CTRL_SET_READ_AHEAD
:
2309 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2310 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2313 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2314 s
->msg_callback_arg
= parg
;
2318 return (s
->mode
|= larg
);
2319 case SSL_CTRL_CLEAR_MODE
:
2320 return (s
->mode
&= ~larg
);
2321 case SSL_CTRL_GET_MAX_CERT_LIST
:
2322 return (long)s
->max_cert_list
;
2323 case SSL_CTRL_SET_MAX_CERT_LIST
:
2326 l
= (long)s
->max_cert_list
;
2327 s
->max_cert_list
= (size_t)larg
;
2329 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2330 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2332 #ifndef OPENSSL_NO_KTLS
2333 if (s
->wbio
!= NULL
&& BIO_get_ktls_send(s
->wbio
))
2335 #endif /* OPENSSL_NO_KTLS */
2336 s
->max_send_fragment
= larg
;
2337 if (s
->max_send_fragment
< s
->split_send_fragment
)
2338 s
->split_send_fragment
= s
->max_send_fragment
;
2340 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2341 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2343 s
->split_send_fragment
= larg
;
2345 case SSL_CTRL_SET_MAX_PIPELINES
:
2346 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2348 s
->max_pipelines
= larg
;
2350 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2352 case SSL_CTRL_GET_RI_SUPPORT
:
2353 return s
->s3
.send_connection_binding
;
2354 case SSL_CTRL_CERT_FLAGS
:
2355 return (s
->cert
->cert_flags
|= larg
);
2356 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2357 return (s
->cert
->cert_flags
&= ~larg
);
2359 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2361 if (s
->s3
.tmp
.ciphers_raw
== NULL
)
2363 *(unsigned char **)parg
= s
->s3
.tmp
.ciphers_raw
;
2364 return (int)s
->s3
.tmp
.ciphers_rawlen
;
2366 return TLS_CIPHER_LEN
;
2368 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2369 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2371 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2375 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2376 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2377 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2378 &s
->min_proto_version
);
2379 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2380 return s
->min_proto_version
;
2381 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2382 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2383 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2384 &s
->max_proto_version
);
2385 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2386 return s
->max_proto_version
;
2388 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2392 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2395 case SSL_CTRL_SET_MSG_CALLBACK
:
2396 s
->msg_callback
= (void (*)
2397 (int write_p
, int version
, int content_type
,
2398 const void *buf
, size_t len
, SSL
*ssl
,
2403 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2407 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2409 return ctx
->sessions
;
2412 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2415 /* For some cases with ctx == NULL perform syntax checks */
2418 #ifndef OPENSSL_NO_EC
2419 case SSL_CTRL_SET_GROUPS_LIST
:
2420 return tls1_set_groups_list(NULL
, NULL
, parg
);
2422 case SSL_CTRL_SET_SIGALGS_LIST
:
2423 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2424 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2431 case SSL_CTRL_GET_READ_AHEAD
:
2432 return ctx
->read_ahead
;
2433 case SSL_CTRL_SET_READ_AHEAD
:
2434 l
= ctx
->read_ahead
;
2435 ctx
->read_ahead
= larg
;
2438 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2439 ctx
->msg_callback_arg
= parg
;
2442 case SSL_CTRL_GET_MAX_CERT_LIST
:
2443 return (long)ctx
->max_cert_list
;
2444 case SSL_CTRL_SET_MAX_CERT_LIST
:
2447 l
= (long)ctx
->max_cert_list
;
2448 ctx
->max_cert_list
= (size_t)larg
;
2451 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2454 l
= (long)ctx
->session_cache_size
;
2455 ctx
->session_cache_size
= (size_t)larg
;
2457 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2458 return (long)ctx
->session_cache_size
;
2459 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2460 l
= ctx
->session_cache_mode
;
2461 ctx
->session_cache_mode
= larg
;
2463 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2464 return ctx
->session_cache_mode
;
2466 case SSL_CTRL_SESS_NUMBER
:
2467 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2468 case SSL_CTRL_SESS_CONNECT
:
2469 return tsan_load(&ctx
->stats
.sess_connect
);
2470 case SSL_CTRL_SESS_CONNECT_GOOD
:
2471 return tsan_load(&ctx
->stats
.sess_connect_good
);
2472 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2473 return tsan_load(&ctx
->stats
.sess_connect_renegotiate
);
2474 case SSL_CTRL_SESS_ACCEPT
:
2475 return tsan_load(&ctx
->stats
.sess_accept
);
2476 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2477 return tsan_load(&ctx
->stats
.sess_accept_good
);
2478 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2479 return tsan_load(&ctx
->stats
.sess_accept_renegotiate
);
2480 case SSL_CTRL_SESS_HIT
:
2481 return tsan_load(&ctx
->stats
.sess_hit
);
2482 case SSL_CTRL_SESS_CB_HIT
:
2483 return tsan_load(&ctx
->stats
.sess_cb_hit
);
2484 case SSL_CTRL_SESS_MISSES
:
2485 return tsan_load(&ctx
->stats
.sess_miss
);
2486 case SSL_CTRL_SESS_TIMEOUTS
:
2487 return tsan_load(&ctx
->stats
.sess_timeout
);
2488 case SSL_CTRL_SESS_CACHE_FULL
:
2489 return tsan_load(&ctx
->stats
.sess_cache_full
);
2491 return (ctx
->mode
|= larg
);
2492 case SSL_CTRL_CLEAR_MODE
:
2493 return (ctx
->mode
&= ~larg
);
2494 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2495 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2497 ctx
->max_send_fragment
= larg
;
2498 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2499 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2501 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2502 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2504 ctx
->split_send_fragment
= larg
;
2506 case SSL_CTRL_SET_MAX_PIPELINES
:
2507 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2509 ctx
->max_pipelines
= larg
;
2511 case SSL_CTRL_CERT_FLAGS
:
2512 return (ctx
->cert
->cert_flags
|= larg
);
2513 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2514 return (ctx
->cert
->cert_flags
&= ~larg
);
2515 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2516 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2517 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2518 &ctx
->min_proto_version
);
2519 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2520 return ctx
->min_proto_version
;
2521 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2522 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2523 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2524 &ctx
->max_proto_version
);
2525 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2526 return ctx
->max_proto_version
;
2528 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2532 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2535 case SSL_CTRL_SET_MSG_CALLBACK
:
2536 ctx
->msg_callback
= (void (*)
2537 (int write_p
, int version
, int content_type
,
2538 const void *buf
, size_t len
, SSL
*ssl
,
2543 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2547 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2556 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2557 const SSL_CIPHER
*const *bp
)
2559 if ((*ap
)->id
> (*bp
)->id
)
2561 if ((*ap
)->id
< (*bp
)->id
)
2566 /** return a STACK of the ciphers available for the SSL and in order of
2568 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2571 if (s
->cipher_list
!= NULL
) {
2572 return s
->cipher_list
;
2573 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2574 return s
->ctx
->cipher_list
;
2580 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2582 if ((s
== NULL
) || !s
->server
)
2584 return s
->peer_ciphers
;
2587 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2589 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2592 ciphers
= SSL_get_ciphers(s
);
2595 if (!ssl_set_client_disabled(s
))
2597 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2598 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2599 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2601 sk
= sk_SSL_CIPHER_new_null();
2604 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2605 sk_SSL_CIPHER_free(sk
);
2613 /** return a STACK of the ciphers available for the SSL and in order of
2615 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2618 if (s
->cipher_list_by_id
!= NULL
) {
2619 return s
->cipher_list_by_id
;
2620 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2621 return s
->ctx
->cipher_list_by_id
;
2627 /** The old interface to get the same thing as SSL_get_ciphers() */
2628 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2630 const SSL_CIPHER
*c
;
2631 STACK_OF(SSL_CIPHER
) *sk
;
2635 sk
= SSL_get_ciphers(s
);
2636 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2638 c
= sk_SSL_CIPHER_value(sk
, n
);
2644 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2646 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2649 return ctx
->cipher_list
;
2654 * Distinguish between ciphers controlled by set_ciphersuite() and
2655 * set_cipher_list() when counting.
2657 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER
) *sk
)
2660 const SSL_CIPHER
*c
;
2664 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); ++i
) {
2665 c
= sk_SSL_CIPHER_value(sk
, i
);
2666 if (c
->min_tls
>= TLS1_3_VERSION
)
2673 /** specify the ciphers to be used by default by the SSL_CTX */
2674 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2676 STACK_OF(SSL_CIPHER
) *sk
;
2678 sk
= ssl_create_cipher_list(ctx
->method
, ctx
->tls13_ciphersuites
,
2679 &ctx
->cipher_list
, &ctx
->cipher_list_by_id
, str
,
2682 * ssl_create_cipher_list may return an empty stack if it was unable to
2683 * find a cipher matching the given rule string (for example if the rule
2684 * string specifies a cipher which has been disabled). This is not an
2685 * error as far as ssl_create_cipher_list is concerned, and hence
2686 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2690 else if (cipher_list_tls12_num(sk
) == 0) {
2691 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2697 /** specify the ciphers to be used by the SSL */
2698 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2700 STACK_OF(SSL_CIPHER
) *sk
;
2702 sk
= ssl_create_cipher_list(s
->ctx
->method
, s
->tls13_ciphersuites
,
2703 &s
->cipher_list
, &s
->cipher_list_by_id
, str
,
2705 /* see comment in SSL_CTX_set_cipher_list */
2708 else if (cipher_list_tls12_num(sk
) == 0) {
2709 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2715 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int size
)
2718 STACK_OF(SSL_CIPHER
) *clntsk
, *srvrsk
;
2719 const SSL_CIPHER
*c
;
2723 || s
->peer_ciphers
== NULL
2728 clntsk
= s
->peer_ciphers
;
2729 srvrsk
= SSL_get_ciphers(s
);
2730 if (clntsk
== NULL
|| srvrsk
== NULL
)
2733 if (sk_SSL_CIPHER_num(clntsk
) == 0 || sk_SSL_CIPHER_num(srvrsk
) == 0)
2736 for (i
= 0; i
< sk_SSL_CIPHER_num(clntsk
); i
++) {
2739 c
= sk_SSL_CIPHER_value(clntsk
, i
);
2740 if (sk_SSL_CIPHER_find(srvrsk
, c
) < 0)
2743 n
= strlen(c
->name
);
2759 /** return a servername extension value if provided in Client Hello, or NULL.
2760 * So far, only host_name types are defined (RFC 3546).
2763 const char *SSL_get_servername(const SSL
*s
, const int type
)
2765 if (type
!= TLSEXT_NAMETYPE_host_name
)
2769 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2770 * SNI value to return if we are resuming/resumed. N.B. that we still
2771 * call the relevant callbacks for such resumption flows, and callbacks
2772 * might error out if there is not a SNI value available.
2775 return s
->session
->ext
.hostname
;
2776 return s
->ext
.hostname
;
2779 int SSL_get_servername_type(const SSL
*s
)
2782 && (!s
->ext
.hostname
? s
->session
->
2783 ext
.hostname
: s
->ext
.hostname
))
2784 return TLSEXT_NAMETYPE_host_name
;
2789 * SSL_select_next_proto implements the standard protocol selection. It is
2790 * expected that this function is called from the callback set by
2791 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2792 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2793 * not included in the length. A byte string of length 0 is invalid. No byte
2794 * string may be truncated. The current, but experimental algorithm for
2795 * selecting the protocol is: 1) If the server doesn't support NPN then this
2796 * is indicated to the callback. In this case, the client application has to
2797 * abort the connection or have a default application level protocol. 2) If
2798 * the server supports NPN, but advertises an empty list then the client
2799 * selects the first protocol in its list, but indicates via the API that this
2800 * fallback case was enacted. 3) Otherwise, the client finds the first
2801 * protocol in the server's list that it supports and selects this protocol.
2802 * This is because it's assumed that the server has better information about
2803 * which protocol a client should use. 4) If the client doesn't support any
2804 * of the server's advertised protocols, then this is treated the same as
2805 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2806 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2808 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2809 const unsigned char *server
,
2810 unsigned int server_len
,
2811 const unsigned char *client
, unsigned int client_len
)
2814 const unsigned char *result
;
2815 int status
= OPENSSL_NPN_UNSUPPORTED
;
2818 * For each protocol in server preference order, see if we support it.
2820 for (i
= 0; i
< server_len
;) {
2821 for (j
= 0; j
< client_len
;) {
2822 if (server
[i
] == client
[j
] &&
2823 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2824 /* We found a match */
2825 result
= &server
[i
];
2826 status
= OPENSSL_NPN_NEGOTIATED
;
2836 /* There's no overlap between our protocols and the server's list. */
2838 status
= OPENSSL_NPN_NO_OVERLAP
;
2841 *out
= (unsigned char *)result
+ 1;
2842 *outlen
= result
[0];
2846 #ifndef OPENSSL_NO_NEXTPROTONEG
2848 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2849 * client's requested protocol for this connection and returns 0. If the
2850 * client didn't request any protocol, then *data is set to NULL. Note that
2851 * the client can request any protocol it chooses. The value returned from
2852 * this function need not be a member of the list of supported protocols
2853 * provided by the callback.
2855 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2862 *len
= (unsigned int)s
->ext
.npn_len
;
2867 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2868 * a TLS server needs a list of supported protocols for Next Protocol
2869 * Negotiation. The returned list must be in wire format. The list is
2870 * returned by setting |out| to point to it and |outlen| to its length. This
2871 * memory will not be modified, but one should assume that the SSL* keeps a
2872 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2873 * wishes to advertise. Otherwise, no such extension will be included in the
2876 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2877 SSL_CTX_npn_advertised_cb_func cb
,
2880 ctx
->ext
.npn_advertised_cb
= cb
;
2881 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2885 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2886 * client needs to select a protocol from the server's provided list. |out|
2887 * must be set to point to the selected protocol (which may be within |in|).
2888 * The length of the protocol name must be written into |outlen|. The
2889 * server's advertised protocols are provided in |in| and |inlen|. The
2890 * callback can assume that |in| is syntactically valid. The client must
2891 * select a protocol. It is fatal to the connection if this callback returns
2892 * a value other than SSL_TLSEXT_ERR_OK.
2894 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2895 SSL_CTX_npn_select_cb_func cb
,
2898 ctx
->ext
.npn_select_cb
= cb
;
2899 ctx
->ext
.npn_select_cb_arg
= arg
;
2904 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2905 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2906 * length-prefixed strings). Returns 0 on success.
2908 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2909 unsigned int protos_len
)
2911 OPENSSL_free(ctx
->ext
.alpn
);
2912 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2913 if (ctx
->ext
.alpn
== NULL
) {
2914 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2917 ctx
->ext
.alpn_len
= protos_len
;
2923 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2924 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2925 * length-prefixed strings). Returns 0 on success.
2927 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2928 unsigned int protos_len
)
2930 OPENSSL_free(ssl
->ext
.alpn
);
2931 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2932 if (ssl
->ext
.alpn
== NULL
) {
2933 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2936 ssl
->ext
.alpn_len
= protos_len
;
2942 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2943 * called during ClientHello processing in order to select an ALPN protocol
2944 * from the client's list of offered protocols.
2946 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2947 SSL_CTX_alpn_select_cb_func cb
,
2950 ctx
->ext
.alpn_select_cb
= cb
;
2951 ctx
->ext
.alpn_select_cb_arg
= arg
;
2955 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2956 * On return it sets |*data| to point to |*len| bytes of protocol name
2957 * (not including the leading length-prefix byte). If the server didn't
2958 * respond with a negotiated protocol then |*len| will be zero.
2960 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2963 *data
= ssl
->s3
.alpn_selected
;
2967 *len
= (unsigned int)ssl
->s3
.alpn_selected_len
;
2970 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2971 const char *label
, size_t llen
,
2972 const unsigned char *context
, size_t contextlen
,
2975 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2978 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2980 contextlen
, use_context
);
2983 int SSL_export_keying_material_early(SSL
*s
, unsigned char *out
, size_t olen
,
2984 const char *label
, size_t llen
,
2985 const unsigned char *context
,
2988 if (s
->version
!= TLS1_3_VERSION
)
2991 return tls13_export_keying_material_early(s
, out
, olen
, label
, llen
,
2992 context
, contextlen
);
2995 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2997 const unsigned char *session_id
= a
->session_id
;
2999 unsigned char tmp_storage
[4];
3001 if (a
->session_id_length
< sizeof(tmp_storage
)) {
3002 memset(tmp_storage
, 0, sizeof(tmp_storage
));
3003 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
3004 session_id
= tmp_storage
;
3008 ((unsigned long)session_id
[0]) |
3009 ((unsigned long)session_id
[1] << 8L) |
3010 ((unsigned long)session_id
[2] << 16L) |
3011 ((unsigned long)session_id
[3] << 24L);
3016 * NB: If this function (or indeed the hash function which uses a sort of
3017 * coarser function than this one) is changed, ensure
3018 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3019 * being able to construct an SSL_SESSION that will collide with any existing
3020 * session with a matching session ID.
3022 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
3024 if (a
->ssl_version
!= b
->ssl_version
)
3026 if (a
->session_id_length
!= b
->session_id_length
)
3028 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
3032 * These wrapper functions should remain rather than redeclaring
3033 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3034 * variable. The reason is that the functions aren't static, they're exposed
3038 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
3040 SSL_CTX
*ret
= NULL
;
3043 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
3047 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
3050 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3051 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
3054 ret
= OPENSSL_zalloc(sizeof(*ret
));
3059 ret
->min_proto_version
= 0;
3060 ret
->max_proto_version
= 0;
3061 ret
->mode
= SSL_MODE_AUTO_RETRY
;
3062 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
3063 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
3064 /* We take the system default. */
3065 ret
->session_timeout
= meth
->get_timeout();
3066 ret
->references
= 1;
3067 ret
->lock
= CRYPTO_THREAD_lock_new();
3068 if (ret
->lock
== NULL
) {
3069 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3073 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
3074 ret
->verify_mode
= SSL_VERIFY_NONE
;
3075 if ((ret
->cert
= ssl_cert_new()) == NULL
)
3078 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
3079 if (ret
->sessions
== NULL
)
3081 ret
->cert_store
= X509_STORE_new();
3082 if (ret
->cert_store
== NULL
)
3084 #ifndef OPENSSL_NO_CT
3085 ret
->ctlog_store
= CTLOG_STORE_new();
3086 if (ret
->ctlog_store
== NULL
)
3090 if (!SSL_CTX_set_ciphersuites(ret
, OSSL_default_ciphersuites()))
3093 if (!ssl_create_cipher_list(ret
->method
,
3094 ret
->tls13_ciphersuites
,
3095 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
3096 OSSL_default_cipher_list(), ret
->cert
)
3097 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
3098 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
3102 ret
->param
= X509_VERIFY_PARAM_new();
3103 if (ret
->param
== NULL
)
3106 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
3107 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
3110 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
3111 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
3115 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
3118 if ((ret
->client_ca_names
= sk_X509_NAME_new_null()) == NULL
)
3121 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
3124 if ((ret
->ext
.secure
= OPENSSL_secure_zalloc(sizeof(*ret
->ext
.secure
))) == NULL
)
3127 /* No compression for DTLS */
3128 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
3129 ret
->comp_methods
= SSL_COMP_get_compression_methods();
3131 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3132 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3134 /* Setup RFC5077 ticket keys */
3135 if ((RAND_bytes(ret
->ext
.tick_key_name
,
3136 sizeof(ret
->ext
.tick_key_name
)) <= 0)
3137 || (RAND_priv_bytes(ret
->ext
.secure
->tick_hmac_key
,
3138 sizeof(ret
->ext
.secure
->tick_hmac_key
)) <= 0)
3139 || (RAND_priv_bytes(ret
->ext
.secure
->tick_aes_key
,
3140 sizeof(ret
->ext
.secure
->tick_aes_key
)) <= 0))
3141 ret
->options
|= SSL_OP_NO_TICKET
;
3143 if (RAND_priv_bytes(ret
->ext
.cookie_hmac_key
,
3144 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
3147 #ifndef OPENSSL_NO_SRP
3148 if (!SSL_CTX_SRP_CTX_init(ret
))
3151 #ifndef OPENSSL_NO_ENGINE
3152 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3153 # define eng_strx(x) #x
3154 # define eng_str(x) eng_strx(x)
3155 /* Use specific client engine automatically... ignore errors */
3158 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3161 ENGINE_load_builtin_engines();
3162 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3164 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
3170 * Default is to connect to non-RI servers. When RI is more widely
3171 * deployed might change this.
3173 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
3175 * Disable compression by default to prevent CRIME. Applications can
3176 * re-enable compression by configuring
3177 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3178 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3179 * middlebox compatibility by default. This may be disabled by default in
3180 * a later OpenSSL version.
3182 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
3184 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
3187 * We cannot usefully set a default max_early_data here (which gets
3188 * propagated in SSL_new(), for the following reason: setting the
3189 * SSL field causes tls_construct_stoc_early_data() to tell the
3190 * client that early data will be accepted when constructing a TLS 1.3
3191 * session ticket, and the client will accordingly send us early data
3192 * when using that ticket (if the client has early data to send).
3193 * However, in order for the early data to actually be consumed by
3194 * the application, the application must also have calls to
3195 * SSL_read_early_data(); otherwise we'll just skip past the early data
3196 * and ignore it. So, since the application must add calls to
3197 * SSL_read_early_data(), we also require them to add
3198 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3199 * eliminating the bandwidth-wasting early data in the case described
3202 ret
->max_early_data
= 0;
3205 * Default recv_max_early_data is a fully loaded single record. Could be
3206 * split across multiple records in practice. We set this differently to
3207 * max_early_data so that, in the default case, we do not advertise any
3208 * support for early_data, but if a client were to send us some (e.g.
3209 * because of an old, stale ticket) then we will tolerate it and skip over
3212 ret
->recv_max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
3214 /* By default we send two session tickets automatically in TLSv1.3 */
3215 ret
->num_tickets
= 2;
3217 ssl_ctx_system_config(ret
);
3221 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3227 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3231 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3234 REF_PRINT_COUNT("SSL_CTX", ctx
);
3235 REF_ASSERT_ISNT(i
< 2);
3236 return ((i
> 1) ? 1 : 0);
3239 void SSL_CTX_free(SSL_CTX
*a
)
3246 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3247 REF_PRINT_COUNT("SSL_CTX", a
);
3250 REF_ASSERT_ISNT(i
< 0);
3252 X509_VERIFY_PARAM_free(a
->param
);
3253 dane_ctx_final(&a
->dane
);
3256 * Free internal session cache. However: the remove_cb() may reference
3257 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3258 * after the sessions were flushed.
3259 * As the ex_data handling routines might also touch the session cache,
3260 * the most secure solution seems to be: empty (flush) the cache, then
3261 * free ex_data, then finally free the cache.
3262 * (See ticket [openssl.org #212].)
3264 if (a
->sessions
!= NULL
)
3265 SSL_CTX_flush_sessions(a
, 0);
3267 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3268 lh_SSL_SESSION_free(a
->sessions
);
3269 X509_STORE_free(a
->cert_store
);
3270 #ifndef OPENSSL_NO_CT
3271 CTLOG_STORE_free(a
->ctlog_store
);
3273 sk_SSL_CIPHER_free(a
->cipher_list
);
3274 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3275 sk_SSL_CIPHER_free(a
->tls13_ciphersuites
);
3276 ssl_cert_free(a
->cert
);
3277 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3278 sk_X509_NAME_pop_free(a
->client_ca_names
, X509_NAME_free
);
3279 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3280 a
->comp_methods
= NULL
;
3281 #ifndef OPENSSL_NO_SRTP
3282 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3284 #ifndef OPENSSL_NO_SRP
3285 SSL_CTX_SRP_CTX_free(a
);
3287 #ifndef OPENSSL_NO_ENGINE
3288 ENGINE_finish(a
->client_cert_engine
);
3291 #ifndef OPENSSL_NO_EC
3292 OPENSSL_free(a
->ext
.ecpointformats
);
3293 OPENSSL_free(a
->ext
.supportedgroups
);
3295 OPENSSL_free(a
->ext
.alpn
);
3296 OPENSSL_secure_free(a
->ext
.secure
);
3298 CRYPTO_THREAD_lock_free(a
->lock
);
3303 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3305 ctx
->default_passwd_callback
= cb
;
3308 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3310 ctx
->default_passwd_callback_userdata
= u
;
3313 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3315 return ctx
->default_passwd_callback
;
3318 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3320 return ctx
->default_passwd_callback_userdata
;
3323 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3325 s
->default_passwd_callback
= cb
;
3328 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3330 s
->default_passwd_callback_userdata
= u
;
3333 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3335 return s
->default_passwd_callback
;
3338 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3340 return s
->default_passwd_callback_userdata
;
3343 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3344 int (*cb
) (X509_STORE_CTX
*, void *),
3347 ctx
->app_verify_callback
= cb
;
3348 ctx
->app_verify_arg
= arg
;
3351 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3352 int (*cb
) (int, X509_STORE_CTX
*))
3354 ctx
->verify_mode
= mode
;
3355 ctx
->default_verify_callback
= cb
;
3358 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3360 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3363 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3365 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3368 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3370 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3373 void ssl_set_masks(SSL
*s
)
3376 uint32_t *pvalid
= s
->s3
.tmp
.valid_flags
;
3377 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3378 unsigned long mask_k
, mask_a
;
3379 #ifndef OPENSSL_NO_EC
3380 int have_ecc_cert
, ecdsa_ok
;
3385 #ifndef OPENSSL_NO_DH
3386 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3391 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3392 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3393 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3394 #ifndef OPENSSL_NO_EC
3395 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3400 OSSL_TRACE4(TLS_CIPHER
, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3401 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3403 #ifndef OPENSSL_NO_GOST
3404 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3405 mask_k
|= SSL_kGOST
;
3406 mask_a
|= SSL_aGOST12
;
3408 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3409 mask_k
|= SSL_kGOST
;
3410 mask_a
|= SSL_aGOST12
;
3412 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3413 mask_k
|= SSL_kGOST
;
3414 mask_a
|= SSL_aGOST01
;
3425 * If we only have an RSA-PSS certificate allow RSA authentication
3426 * if TLS 1.2 and peer supports it.
3429 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3430 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3431 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3438 mask_a
|= SSL_aNULL
;
3441 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3442 * depending on the key usage extension.
3444 #ifndef OPENSSL_NO_EC
3445 if (have_ecc_cert
) {
3447 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3448 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3449 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3452 mask_a
|= SSL_aECDSA
;
3454 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3455 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3456 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3457 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3458 mask_a
|= SSL_aECDSA
;
3460 /* Allow Ed448 for TLS 1.2 if peer supports it */
3461 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED448
)
3462 && pvalid
[SSL_PKEY_ED448
] & CERT_PKEY_EXPLICIT_SIGN
3463 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3464 mask_a
|= SSL_aECDSA
;
3467 #ifndef OPENSSL_NO_EC
3468 mask_k
|= SSL_kECDHE
;
3471 #ifndef OPENSSL_NO_PSK
3474 if (mask_k
& SSL_kRSA
)
3475 mask_k
|= SSL_kRSAPSK
;
3476 if (mask_k
& SSL_kDHE
)
3477 mask_k
|= SSL_kDHEPSK
;
3478 if (mask_k
& SSL_kECDHE
)
3479 mask_k
|= SSL_kECDHEPSK
;
3482 s
->s3
.tmp
.mask_k
= mask_k
;
3483 s
->s3
.tmp
.mask_a
= mask_a
;
3486 #ifndef OPENSSL_NO_EC
3488 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3490 if (s
->s3
.tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3491 /* key usage, if present, must allow signing */
3492 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3493 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3494 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3498 return 1; /* all checks are ok */
3503 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3504 size_t *serverinfo_length
)
3506 CERT_PKEY
*cpk
= s
->s3
.tmp
.cert
;
3507 *serverinfo_length
= 0;
3509 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3512 *serverinfo
= cpk
->serverinfo
;
3513 *serverinfo_length
= cpk
->serverinfo_length
;
3517 void ssl_update_cache(SSL
*s
, int mode
)
3522 * If the session_id_length is 0, we are not supposed to cache it, and it
3523 * would be rather hard to do anyway :-)
3525 if (s
->session
->session_id_length
== 0)
3529 * If sid_ctx_length is 0 there is no specific application context
3530 * associated with this session, so when we try to resume it and
3531 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3532 * indication that this is actually a session for the proper application
3533 * context, and the *handshake* will fail, not just the resumption attempt.
3534 * Do not cache (on the server) these sessions that are not resumable
3535 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3537 if (s
->server
&& s
->session
->sid_ctx_length
== 0
3538 && (s
->verify_mode
& SSL_VERIFY_PEER
) != 0)
3541 i
= s
->session_ctx
->session_cache_mode
;
3543 && (!s
->hit
|| SSL_IS_TLS13(s
))) {
3545 * Add the session to the internal cache. In server side TLSv1.3 we
3546 * normally don't do this because by default it's a full stateless ticket
3547 * with only a dummy session id so there is no reason to cache it,
3549 * - we are doing early_data, in which case we cache so that we can
3551 * - the application has set a remove_session_cb so needs to know about
3552 * session timeout events
3553 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3555 if ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) == 0
3556 && (!SSL_IS_TLS13(s
)
3558 || (s
->max_early_data
> 0
3559 && (s
->options
& SSL_OP_NO_ANTI_REPLAY
) == 0)
3560 || s
->session_ctx
->remove_session_cb
!= NULL
3561 || (s
->options
& SSL_OP_NO_TICKET
) != 0))
3562 SSL_CTX_add_session(s
->session_ctx
, s
->session
);
3565 * Add the session to the external cache. We do this even in server side
3566 * TLSv1.3 without early data because some applications just want to
3567 * know about the creation of a session and aren't doing a full cache.
3569 if (s
->session_ctx
->new_session_cb
!= NULL
) {
3570 SSL_SESSION_up_ref(s
->session
);
3571 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3572 SSL_SESSION_free(s
->session
);
3576 /* auto flush every 255 connections */
3577 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3578 TSAN_QUALIFIER
int *stat
;
3579 if (mode
& SSL_SESS_CACHE_CLIENT
)
3580 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3582 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3583 if ((tsan_load(stat
) & 0xff) == 0xff)
3584 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3588 const SSL_METHOD
*SSL_CTX_get_ssl_method(const SSL_CTX
*ctx
)
3593 const SSL_METHOD
*SSL_get_ssl_method(const SSL
*s
)
3598 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3602 if (s
->method
!= meth
) {
3603 const SSL_METHOD
*sm
= s
->method
;
3604 int (*hf
) (SSL
*) = s
->handshake_func
;
3606 if (sm
->version
== meth
->version
)
3611 ret
= s
->method
->ssl_new(s
);
3614 if (hf
== sm
->ssl_connect
)
3615 s
->handshake_func
= meth
->ssl_connect
;
3616 else if (hf
== sm
->ssl_accept
)
3617 s
->handshake_func
= meth
->ssl_accept
;
3622 int SSL_get_error(const SSL
*s
, int i
)
3629 return SSL_ERROR_NONE
;
3632 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3633 * where we do encode the error
3635 if ((l
= ERR_peek_error()) != 0) {
3636 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3637 return SSL_ERROR_SYSCALL
;
3639 return SSL_ERROR_SSL
;
3642 if (SSL_want_read(s
)) {
3643 bio
= SSL_get_rbio(s
);
3644 if (BIO_should_read(bio
))
3645 return SSL_ERROR_WANT_READ
;
3646 else if (BIO_should_write(bio
))
3648 * This one doesn't make too much sense ... We never try to write
3649 * to the rbio, and an application program where rbio and wbio
3650 * are separate couldn't even know what it should wait for.
3651 * However if we ever set s->rwstate incorrectly (so that we have
3652 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3653 * wbio *are* the same, this test works around that bug; so it
3654 * might be safer to keep it.
3656 return SSL_ERROR_WANT_WRITE
;
3657 else if (BIO_should_io_special(bio
)) {
3658 reason
= BIO_get_retry_reason(bio
);
3659 if (reason
== BIO_RR_CONNECT
)
3660 return SSL_ERROR_WANT_CONNECT
;
3661 else if (reason
== BIO_RR_ACCEPT
)
3662 return SSL_ERROR_WANT_ACCEPT
;
3664 return SSL_ERROR_SYSCALL
; /* unknown */
3668 if (SSL_want_write(s
)) {
3669 /* Access wbio directly - in order to use the buffered bio if present */
3671 if (BIO_should_write(bio
))
3672 return SSL_ERROR_WANT_WRITE
;
3673 else if (BIO_should_read(bio
))
3675 * See above (SSL_want_read(s) with BIO_should_write(bio))
3677 return SSL_ERROR_WANT_READ
;
3678 else if (BIO_should_io_special(bio
)) {
3679 reason
= BIO_get_retry_reason(bio
);
3680 if (reason
== BIO_RR_CONNECT
)
3681 return SSL_ERROR_WANT_CONNECT
;
3682 else if (reason
== BIO_RR_ACCEPT
)
3683 return SSL_ERROR_WANT_ACCEPT
;
3685 return SSL_ERROR_SYSCALL
;
3688 if (SSL_want_x509_lookup(s
))
3689 return SSL_ERROR_WANT_X509_LOOKUP
;
3690 if (SSL_want_async(s
))
3691 return SSL_ERROR_WANT_ASYNC
;
3692 if (SSL_want_async_job(s
))
3693 return SSL_ERROR_WANT_ASYNC_JOB
;
3694 if (SSL_want_client_hello_cb(s
))
3695 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3697 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3698 (s
->s3
.warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3699 return SSL_ERROR_ZERO_RETURN
;
3701 return SSL_ERROR_SYSCALL
;
3704 static int ssl_do_handshake_intern(void *vargs
)
3706 struct ssl_async_args
*args
;
3709 args
= (struct ssl_async_args
*)vargs
;
3712 return s
->handshake_func(s
);
3715 int SSL_do_handshake(SSL
*s
)
3719 if (s
->handshake_func
== NULL
) {
3720 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3724 ossl_statem_check_finish_init(s
, -1);
3726 s
->method
->ssl_renegotiate_check(s
, 0);
3728 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3729 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3730 struct ssl_async_args args
;
3734 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3736 ret
= s
->handshake_func(s
);
3742 void SSL_set_accept_state(SSL
*s
)
3746 ossl_statem_clear(s
);
3747 s
->handshake_func
= s
->method
->ssl_accept
;
3751 void SSL_set_connect_state(SSL
*s
)
3755 ossl_statem_clear(s
);
3756 s
->handshake_func
= s
->method
->ssl_connect
;
3760 int ssl_undefined_function(SSL
*s
)
3762 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3766 int ssl_undefined_void_function(void)
3768 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3769 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3773 int ssl_undefined_const_function(const SSL
*s
)
3778 const SSL_METHOD
*ssl_bad_method(int ver
)
3780 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3784 const char *ssl_protocol_to_string(int version
)
3788 case TLS1_3_VERSION
:
3791 case TLS1_2_VERSION
:
3794 case TLS1_1_VERSION
:
3809 case DTLS1_2_VERSION
:
3817 const char *SSL_get_version(const SSL
*s
)
3819 return ssl_protocol_to_string(s
->version
);
3822 static int dup_ca_names(STACK_OF(X509_NAME
) **dst
, STACK_OF(X509_NAME
) *src
)
3824 STACK_OF(X509_NAME
) *sk
;
3833 if ((sk
= sk_X509_NAME_new_null()) == NULL
)
3835 for (i
= 0; i
< sk_X509_NAME_num(src
); i
++) {
3836 xn
= X509_NAME_dup(sk_X509_NAME_value(src
, i
));
3838 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3841 if (sk_X509_NAME_insert(sk
, xn
, i
) == 0) {
3843 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3852 SSL
*SSL_dup(SSL
*s
)
3857 /* If we're not quiescent, just up_ref! */
3858 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3859 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3864 * Otherwise, copy configuration state, and session if set.
3866 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3869 if (s
->session
!= NULL
) {
3871 * Arranges to share the same session via up_ref. This "copies"
3872 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3874 if (!SSL_copy_session_id(ret
, s
))
3878 * No session has been established yet, so we have to expect that
3879 * s->cert or ret->cert will be changed later -- they should not both
3880 * point to the same object, and thus we can't use
3881 * SSL_copy_session_id.
3883 if (!SSL_set_ssl_method(ret
, s
->method
))
3886 if (s
->cert
!= NULL
) {
3887 ssl_cert_free(ret
->cert
);
3888 ret
->cert
= ssl_cert_dup(s
->cert
);
3889 if (ret
->cert
== NULL
)
3893 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3894 (int)s
->sid_ctx_length
))
3898 if (!ssl_dane_dup(ret
, s
))
3900 ret
->version
= s
->version
;
3901 ret
->options
= s
->options
;
3902 ret
->mode
= s
->mode
;
3903 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3904 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3905 ret
->msg_callback
= s
->msg_callback
;
3906 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3907 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3908 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3909 ret
->generate_session_id
= s
->generate_session_id
;
3911 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3913 /* copy app data, a little dangerous perhaps */
3914 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3917 /* setup rbio, and wbio */
3918 if (s
->rbio
!= NULL
) {
3919 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3922 if (s
->wbio
!= NULL
) {
3923 if (s
->wbio
!= s
->rbio
) {
3924 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3927 BIO_up_ref(ret
->rbio
);
3928 ret
->wbio
= ret
->rbio
;
3932 ret
->server
= s
->server
;
3933 if (s
->handshake_func
) {
3935 SSL_set_accept_state(ret
);
3937 SSL_set_connect_state(ret
);
3939 ret
->shutdown
= s
->shutdown
;
3942 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3943 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3945 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3947 /* dup the cipher_list and cipher_list_by_id stacks */
3948 if (s
->cipher_list
!= NULL
) {
3949 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3952 if (s
->cipher_list_by_id
!= NULL
)
3953 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3957 /* Dup the client_CA list */
3958 if (!dup_ca_names(&ret
->ca_names
, s
->ca_names
)
3959 || !dup_ca_names(&ret
->client_ca_names
, s
->client_ca_names
))
3969 void ssl_clear_cipher_ctx(SSL
*s
)
3971 if (s
->enc_read_ctx
!= NULL
) {
3972 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3973 s
->enc_read_ctx
= NULL
;
3975 if (s
->enc_write_ctx
!= NULL
) {
3976 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3977 s
->enc_write_ctx
= NULL
;
3979 #ifndef OPENSSL_NO_COMP
3980 COMP_CTX_free(s
->expand
);
3982 COMP_CTX_free(s
->compress
);
3987 X509
*SSL_get_certificate(const SSL
*s
)
3989 if (s
->cert
!= NULL
)
3990 return s
->cert
->key
->x509
;
3995 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3997 if (s
->cert
!= NULL
)
3998 return s
->cert
->key
->privatekey
;
4003 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
4005 if (ctx
->cert
!= NULL
)
4006 return ctx
->cert
->key
->x509
;
4011 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
4013 if (ctx
->cert
!= NULL
)
4014 return ctx
->cert
->key
->privatekey
;
4019 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
4021 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
4022 return s
->session
->cipher
;
4026 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
4028 return s
->s3
.tmp
.new_cipher
;
4031 const COMP_METHOD
*SSL_get_current_compression(const SSL
*s
)
4033 #ifndef OPENSSL_NO_COMP
4034 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
4040 const COMP_METHOD
*SSL_get_current_expansion(const SSL
*s
)
4042 #ifndef OPENSSL_NO_COMP
4043 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
4049 int ssl_init_wbio_buffer(SSL
*s
)
4053 if (s
->bbio
!= NULL
) {
4054 /* Already buffered. */
4058 bbio
= BIO_new(BIO_f_buffer());
4059 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
4061 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
4065 s
->wbio
= BIO_push(bbio
, s
->wbio
);
4070 int ssl_free_wbio_buffer(SSL
*s
)
4072 /* callers ensure s is never null */
4073 if (s
->bbio
== NULL
)
4076 s
->wbio
= BIO_pop(s
->wbio
);
4083 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
4085 ctx
->quiet_shutdown
= mode
;
4088 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
4090 return ctx
->quiet_shutdown
;
4093 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
4095 s
->quiet_shutdown
= mode
;
4098 int SSL_get_quiet_shutdown(const SSL
*s
)
4100 return s
->quiet_shutdown
;
4103 void SSL_set_shutdown(SSL
*s
, int mode
)
4108 int SSL_get_shutdown(const SSL
*s
)
4113 int SSL_version(const SSL
*s
)
4118 int SSL_client_version(const SSL
*s
)
4120 return s
->client_version
;
4123 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
4128 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
4131 if (ssl
->ctx
== ctx
)
4134 ctx
= ssl
->session_ctx
;
4135 new_cert
= ssl_cert_dup(ctx
->cert
);
4136 if (new_cert
== NULL
) {
4140 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
4141 ssl_cert_free(new_cert
);
4145 ssl_cert_free(ssl
->cert
);
4146 ssl
->cert
= new_cert
;
4149 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4150 * so setter APIs must prevent invalid lengths from entering the system.
4152 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
4156 * If the session ID context matches that of the parent SSL_CTX,
4157 * inherit it from the new SSL_CTX as well. If however the context does
4158 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4159 * leave it unchanged.
4161 if ((ssl
->ctx
!= NULL
) &&
4162 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
4163 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
4164 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
4165 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
4168 SSL_CTX_up_ref(ctx
);
4169 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
4175 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
4177 return X509_STORE_set_default_paths(ctx
->cert_store
);
4180 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
4182 X509_LOOKUP
*lookup
;
4184 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
4187 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4189 /* Clear any errors if the default directory does not exist */
4195 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
4197 X509_LOOKUP
*lookup
;
4199 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
4203 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4205 /* Clear any errors if the default file does not exist */
4211 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
4214 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
4217 void SSL_set_info_callback(SSL
*ssl
,
4218 void (*cb
) (const SSL
*ssl
, int type
, int val
))
4220 ssl
->info_callback
= cb
;
4224 * One compiler (Diab DCC) doesn't like argument names in returned function
4227 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
4230 return ssl
->info_callback
;
4233 void SSL_set_verify_result(SSL
*ssl
, long arg
)
4235 ssl
->verify_result
= arg
;
4238 long SSL_get_verify_result(const SSL
*ssl
)
4240 return ssl
->verify_result
;
4243 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4246 return sizeof(ssl
->s3
.client_random
);
4247 if (outlen
> sizeof(ssl
->s3
.client_random
))
4248 outlen
= sizeof(ssl
->s3
.client_random
);
4249 memcpy(out
, ssl
->s3
.client_random
, outlen
);
4253 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4256 return sizeof(ssl
->s3
.server_random
);
4257 if (outlen
> sizeof(ssl
->s3
.server_random
))
4258 outlen
= sizeof(ssl
->s3
.server_random
);
4259 memcpy(out
, ssl
->s3
.server_random
, outlen
);
4263 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
4264 unsigned char *out
, size_t outlen
)
4267 return session
->master_key_length
;
4268 if (outlen
> session
->master_key_length
)
4269 outlen
= session
->master_key_length
;
4270 memcpy(out
, session
->master_key
, outlen
);
4274 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
4277 if (len
> sizeof(sess
->master_key
))
4280 memcpy(sess
->master_key
, in
, len
);
4281 sess
->master_key_length
= len
;
4286 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4288 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4291 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4293 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4296 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4298 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4301 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4303 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4306 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4308 return ctx
->cert_store
;
4311 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4313 X509_STORE_free(ctx
->cert_store
);
4314 ctx
->cert_store
= store
;
4317 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4320 X509_STORE_up_ref(store
);
4321 SSL_CTX_set_cert_store(ctx
, store
);
4324 int SSL_want(const SSL
*s
)
4330 * \brief Set the callback for generating temporary DH keys.
4331 * \param ctx the SSL context.
4332 * \param dh the callback
4335 #ifndef OPENSSL_NO_DH
4336 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4337 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4340 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4343 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4346 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4350 #ifndef OPENSSL_NO_PSK
4351 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4353 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4354 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4357 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4358 if (identity_hint
!= NULL
) {
4359 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4360 if (ctx
->cert
->psk_identity_hint
== NULL
)
4363 ctx
->cert
->psk_identity_hint
= NULL
;
4367 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4372 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4373 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4376 OPENSSL_free(s
->cert
->psk_identity_hint
);
4377 if (identity_hint
!= NULL
) {
4378 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4379 if (s
->cert
->psk_identity_hint
== NULL
)
4382 s
->cert
->psk_identity_hint
= NULL
;
4386 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4388 if (s
== NULL
|| s
->session
== NULL
)
4390 return s
->session
->psk_identity_hint
;
4393 const char *SSL_get_psk_identity(const SSL
*s
)
4395 if (s
== NULL
|| s
->session
== NULL
)
4397 return s
->session
->psk_identity
;
4400 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4402 s
->psk_client_callback
= cb
;
4405 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4407 ctx
->psk_client_callback
= cb
;
4410 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4412 s
->psk_server_callback
= cb
;
4415 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4417 ctx
->psk_server_callback
= cb
;
4421 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4423 s
->psk_find_session_cb
= cb
;
4426 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4427 SSL_psk_find_session_cb_func cb
)
4429 ctx
->psk_find_session_cb
= cb
;
4432 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4434 s
->psk_use_session_cb
= cb
;
4437 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4438 SSL_psk_use_session_cb_func cb
)
4440 ctx
->psk_use_session_cb
= cb
;
4443 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4444 void (*cb
) (int write_p
, int version
,
4445 int content_type
, const void *buf
,
4446 size_t len
, SSL
*ssl
, void *arg
))
4448 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4451 void SSL_set_msg_callback(SSL
*ssl
,
4452 void (*cb
) (int write_p
, int version
,
4453 int content_type
, const void *buf
,
4454 size_t len
, SSL
*ssl
, void *arg
))
4456 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4459 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4460 int (*cb
) (SSL
*ssl
,
4464 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4465 (void (*)(void))cb
);
4468 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4469 int (*cb
) (SSL
*ssl
,
4470 int is_forward_secure
))
4472 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4473 (void (*)(void))cb
);
4476 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4477 size_t (*cb
) (SSL
*ssl
, int type
,
4478 size_t len
, void *arg
))
4480 ctx
->record_padding_cb
= cb
;
4483 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4485 ctx
->record_padding_arg
= arg
;
4488 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX
*ctx
)
4490 return ctx
->record_padding_arg
;
4493 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4495 /* block size of 0 or 1 is basically no padding */
4496 if (block_size
== 1)
4497 ctx
->block_padding
= 0;
4498 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4499 ctx
->block_padding
= block_size
;
4505 void SSL_set_record_padding_callback(SSL
*ssl
,
4506 size_t (*cb
) (SSL
*ssl
, int type
,
4507 size_t len
, void *arg
))
4509 ssl
->record_padding_cb
= cb
;
4512 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4514 ssl
->record_padding_arg
= arg
;
4517 void *SSL_get_record_padding_callback_arg(const SSL
*ssl
)
4519 return ssl
->record_padding_arg
;
4522 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4524 /* block size of 0 or 1 is basically no padding */
4525 if (block_size
== 1)
4526 ssl
->block_padding
= 0;
4527 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4528 ssl
->block_padding
= block_size
;
4534 int SSL_set_num_tickets(SSL
*s
, size_t num_tickets
)
4536 s
->num_tickets
= num_tickets
;
4541 size_t SSL_get_num_tickets(const SSL
*s
)
4543 return s
->num_tickets
;
4546 int SSL_CTX_set_num_tickets(SSL_CTX
*ctx
, size_t num_tickets
)
4548 ctx
->num_tickets
= num_tickets
;
4553 size_t SSL_CTX_get_num_tickets(const SSL_CTX
*ctx
)
4555 return ctx
->num_tickets
;
4559 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4560 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4561 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4562 * Returns the newly allocated ctx;
4565 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4567 ssl_clear_hash_ctx(hash
);
4568 *hash
= EVP_MD_CTX_new();
4569 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4570 EVP_MD_CTX_free(*hash
);
4577 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4580 EVP_MD_CTX_free(*hash
);
4584 /* Retrieve handshake hashes */
4585 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4588 EVP_MD_CTX
*ctx
= NULL
;
4589 EVP_MD_CTX
*hdgst
= s
->s3
.handshake_dgst
;
4590 int hashleni
= EVP_MD_CTX_size(hdgst
);
4593 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4594 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4595 ERR_R_INTERNAL_ERROR
);
4599 ctx
= EVP_MD_CTX_new();
4603 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4604 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4605 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4606 ERR_R_INTERNAL_ERROR
);
4610 *hashlen
= hashleni
;
4614 EVP_MD_CTX_free(ctx
);
4618 int SSL_session_reused(const SSL
*s
)
4623 int SSL_is_server(const SSL
*s
)
4628 #if !OPENSSL_API_1_1_0
4629 void SSL_set_debug(SSL
*s
, int debug
)
4631 /* Old function was do-nothing anyway... */
4637 void SSL_set_security_level(SSL
*s
, int level
)
4639 s
->cert
->sec_level
= level
;
4642 int SSL_get_security_level(const SSL
*s
)
4644 return s
->cert
->sec_level
;
4647 void SSL_set_security_callback(SSL
*s
,
4648 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4649 int op
, int bits
, int nid
,
4650 void *other
, void *ex
))
4652 s
->cert
->sec_cb
= cb
;
4655 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4656 const SSL_CTX
*ctx
, int op
,
4657 int bits
, int nid
, void *other
,
4659 return s
->cert
->sec_cb
;
4662 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4664 s
->cert
->sec_ex
= ex
;
4667 void *SSL_get0_security_ex_data(const SSL
*s
)
4669 return s
->cert
->sec_ex
;
4672 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4674 ctx
->cert
->sec_level
= level
;
4677 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4679 return ctx
->cert
->sec_level
;
4682 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4683 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4684 int op
, int bits
, int nid
,
4685 void *other
, void *ex
))
4687 ctx
->cert
->sec_cb
= cb
;
4690 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4696 return ctx
->cert
->sec_cb
;
4699 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4701 ctx
->cert
->sec_ex
= ex
;
4704 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4706 return ctx
->cert
->sec_ex
;
4710 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4711 * can return unsigned long, instead of the generic long return value from the
4712 * control interface.
4714 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4716 return ctx
->options
;
4719 unsigned long SSL_get_options(const SSL
*s
)
4724 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4726 return ctx
->options
|= op
;
4729 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4731 return s
->options
|= op
;
4734 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4736 return ctx
->options
&= ~op
;
4739 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4741 return s
->options
&= ~op
;
4744 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4746 return s
->verified_chain
;
4749 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4751 #ifndef OPENSSL_NO_CT
4754 * Moves SCTs from the |src| stack to the |dst| stack.
4755 * The source of each SCT will be set to |origin|.
4756 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4758 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4760 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4761 sct_source_t origin
)
4767 *dst
= sk_SCT_new_null();
4769 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4774 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4775 if (SCT_set_source(sct
, origin
) != 1)
4778 if (sk_SCT_push(*dst
, sct
) <= 0)
4786 sk_SCT_push(src
, sct
); /* Put the SCT back */
4791 * Look for data collected during ServerHello and parse if found.
4792 * Returns the number of SCTs extracted.
4794 static int ct_extract_tls_extension_scts(SSL
*s
)
4796 int scts_extracted
= 0;
4798 if (s
->ext
.scts
!= NULL
) {
4799 const unsigned char *p
= s
->ext
.scts
;
4800 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4802 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4804 SCT_LIST_free(scts
);
4807 return scts_extracted
;
4811 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4812 * contains an SCT X509 extension. They will be stored in |s->scts|.
4814 * - The number of SCTs extracted, assuming an OCSP response exists.
4815 * - 0 if no OCSP response exists or it contains no SCTs.
4816 * - A negative integer if an error occurs.
4818 static int ct_extract_ocsp_response_scts(SSL
*s
)
4820 # ifndef OPENSSL_NO_OCSP
4821 int scts_extracted
= 0;
4822 const unsigned char *p
;
4823 OCSP_BASICRESP
*br
= NULL
;
4824 OCSP_RESPONSE
*rsp
= NULL
;
4825 STACK_OF(SCT
) *scts
= NULL
;
4828 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4831 p
= s
->ext
.ocsp
.resp
;
4832 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4836 br
= OCSP_response_get1_basic(rsp
);
4840 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4841 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4847 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4849 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4850 if (scts_extracted
< 0)
4854 SCT_LIST_free(scts
);
4855 OCSP_BASICRESP_free(br
);
4856 OCSP_RESPONSE_free(rsp
);
4857 return scts_extracted
;
4859 /* Behave as if no OCSP response exists */
4865 * Attempts to extract SCTs from the peer certificate.
4866 * Return the number of SCTs extracted, or a negative integer if an error
4869 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4871 int scts_extracted
= 0;
4872 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4875 STACK_OF(SCT
) *scts
=
4876 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4879 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4881 SCT_LIST_free(scts
);
4884 return scts_extracted
;
4888 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4889 * response (if it exists) and X509v3 extensions in the certificate.
4890 * Returns NULL if an error occurs.
4892 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4894 if (!s
->scts_parsed
) {
4895 if (ct_extract_tls_extension_scts(s
) < 0 ||
4896 ct_extract_ocsp_response_scts(s
) < 0 ||
4897 ct_extract_x509v3_extension_scts(s
) < 0)
4907 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4908 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4913 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4914 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4916 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4919 for (i
= 0; i
< count
; ++i
) {
4920 SCT
*sct
= sk_SCT_value(scts
, i
);
4921 int status
= SCT_get_validation_status(sct
);
4923 if (status
== SCT_VALIDATION_STATUS_VALID
)
4926 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4930 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4934 * Since code exists that uses the custom extension handler for CT, look
4935 * for this and throw an error if they have already registered to use CT.
4937 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4938 TLSEXT_TYPE_signed_certificate_timestamp
))
4940 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4941 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4945 if (callback
!= NULL
) {
4947 * If we are validating CT, then we MUST accept SCTs served via OCSP
4949 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4953 s
->ct_validation_callback
= callback
;
4954 s
->ct_validation_callback_arg
= arg
;
4959 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4960 ssl_ct_validation_cb callback
, void *arg
)
4963 * Since code exists that uses the custom extension handler for CT, look for
4964 * this and throw an error if they have already registered to use CT.
4966 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4967 TLSEXT_TYPE_signed_certificate_timestamp
))
4969 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4970 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4974 ctx
->ct_validation_callback
= callback
;
4975 ctx
->ct_validation_callback_arg
= arg
;
4979 int SSL_ct_is_enabled(const SSL
*s
)
4981 return s
->ct_validation_callback
!= NULL
;
4984 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4986 return ctx
->ct_validation_callback
!= NULL
;
4989 int ssl_validate_ct(SSL
*s
)
4992 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4994 SSL_DANE
*dane
= &s
->dane
;
4995 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4996 const STACK_OF(SCT
) *scts
;
4999 * If no callback is set, the peer is anonymous, or its chain is invalid,
5000 * skip SCT validation - just return success. Applications that continue
5001 * handshakes without certificates, with unverified chains, or pinned leaf
5002 * certificates are outside the scope of the WebPKI and CT.
5004 * The above exclusions notwithstanding the vast majority of peers will
5005 * have rather ordinary certificate chains validated by typical
5006 * applications that perform certificate verification and therefore will
5007 * process SCTs when enabled.
5009 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
5010 s
->verify_result
!= X509_V_OK
||
5011 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
5015 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5016 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5018 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
5019 switch (dane
->mtlsa
->usage
) {
5020 case DANETLS_USAGE_DANE_TA
:
5021 case DANETLS_USAGE_DANE_EE
:
5026 ctx
= CT_POLICY_EVAL_CTX_new();
5028 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
5029 ERR_R_MALLOC_FAILURE
);
5033 issuer
= sk_X509_value(s
->verified_chain
, 1);
5034 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
5035 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
5036 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
5037 CT_POLICY_EVAL_CTX_set_time(
5038 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
5040 scts
= SSL_get0_peer_scts(s
);
5043 * This function returns success (> 0) only when all the SCTs are valid, 0
5044 * when some are invalid, and < 0 on various internal errors (out of
5045 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5046 * reason to abort the handshake, that decision is up to the callback.
5047 * Therefore, we error out only in the unexpected case that the return
5048 * value is negative.
5050 * XXX: One might well argue that the return value of this function is an
5051 * unfortunate design choice. Its job is only to determine the validation
5052 * status of each of the provided SCTs. So long as it correctly separates
5053 * the wheat from the chaff it should return success. Failure in this case
5054 * ought to correspond to an inability to carry out its duties.
5056 if (SCT_LIST_validate(scts
, ctx
) < 0) {
5057 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5058 SSL_R_SCT_VERIFICATION_FAILED
);
5062 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
5064 ret
= 0; /* This function returns 0 on failure */
5066 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5067 SSL_R_CALLBACK_FAILED
);
5070 CT_POLICY_EVAL_CTX_free(ctx
);
5072 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5073 * failure return code here. Also the application may wish the complete
5074 * the handshake, and then disconnect cleanly at a higher layer, after
5075 * checking the verification status of the completed connection.
5077 * We therefore force a certificate verification failure which will be
5078 * visible via SSL_get_verify_result() and cached as part of any resumed
5081 * Note: the permissive callback is for information gathering only, always
5082 * returns success, and does not affect verification status. Only the
5083 * strict callback or a custom application-specified callback can trigger
5084 * connection failure or record a verification error.
5087 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
5091 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
5093 switch (validation_mode
) {
5095 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5097 case SSL_CT_VALIDATION_PERMISSIVE
:
5098 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
5099 case SSL_CT_VALIDATION_STRICT
:
5100 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
5104 int SSL_enable_ct(SSL
*s
, int validation_mode
)
5106 switch (validation_mode
) {
5108 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5110 case SSL_CT_VALIDATION_PERMISSIVE
:
5111 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
5112 case SSL_CT_VALIDATION_STRICT
:
5113 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
5117 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
5119 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
5122 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
5124 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
5127 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
5129 CTLOG_STORE_free(ctx
->ctlog_store
);
5130 ctx
->ctlog_store
= logs
;
5133 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
5135 return ctx
->ctlog_store
;
5138 #endif /* OPENSSL_NO_CT */
5140 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
5143 c
->client_hello_cb
= cb
;
5144 c
->client_hello_cb_arg
= arg
;
5147 int SSL_client_hello_isv2(SSL
*s
)
5149 if (s
->clienthello
== NULL
)
5151 return s
->clienthello
->isv2
;
5154 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
5156 if (s
->clienthello
== NULL
)
5158 return s
->clienthello
->legacy_version
;
5161 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
5163 if (s
->clienthello
== NULL
)
5166 *out
= s
->clienthello
->random
;
5167 return SSL3_RANDOM_SIZE
;
5170 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
5172 if (s
->clienthello
== NULL
)
5175 *out
= s
->clienthello
->session_id
;
5176 return s
->clienthello
->session_id_len
;
5179 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
5181 if (s
->clienthello
== NULL
)
5184 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
5185 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
5188 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
5190 if (s
->clienthello
== NULL
)
5193 *out
= s
->clienthello
->compressions
;
5194 return s
->clienthello
->compressions_len
;
5197 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
5203 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
5205 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5206 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5215 if ((present
= OPENSSL_malloc(sizeof(*present
) * num
)) == NULL
) {
5216 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT
,
5217 ERR_R_MALLOC_FAILURE
);
5220 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5221 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5223 if (ext
->received_order
>= num
)
5225 present
[ext
->received_order
] = ext
->type
;
5232 OPENSSL_free(present
);
5236 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
5242 if (s
->clienthello
== NULL
)
5244 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
5245 r
= s
->clienthello
->pre_proc_exts
+ i
;
5246 if (r
->present
&& r
->type
== type
) {
5248 *out
= PACKET_data(&r
->data
);
5250 *outlen
= PACKET_remaining(&r
->data
);
5257 int SSL_free_buffers(SSL
*ssl
)
5259 RECORD_LAYER
*rl
= &ssl
->rlayer
;
5261 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
5264 RECORD_LAYER_release(rl
);
5268 int SSL_alloc_buffers(SSL
*ssl
)
5270 return ssl3_setup_buffers(ssl
);
5273 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
5275 ctx
->keylog_callback
= cb
;
5278 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
5280 return ctx
->keylog_callback
;
5283 static int nss_keylog_int(const char *prefix
,
5285 const uint8_t *parameter_1
,
5286 size_t parameter_1_len
,
5287 const uint8_t *parameter_2
,
5288 size_t parameter_2_len
)
5291 char *cursor
= NULL
;
5296 if (ssl
->ctx
->keylog_callback
== NULL
)
5300 * Our output buffer will contain the following strings, rendered with
5301 * space characters in between, terminated by a NULL character: first the
5302 * prefix, then the first parameter, then the second parameter. The
5303 * meaning of each parameter depends on the specific key material being
5304 * logged. Note that the first and second parameters are encoded in
5305 * hexadecimal, so we need a buffer that is twice their lengths.
5307 prefix_len
= strlen(prefix
);
5308 out_len
= prefix_len
+ (2 * parameter_1_len
) + (2 * parameter_2_len
) + 3;
5309 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
5310 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
5311 ERR_R_MALLOC_FAILURE
);
5315 strcpy(cursor
, prefix
);
5316 cursor
+= prefix_len
;
5319 for (i
= 0; i
< parameter_1_len
; i
++) {
5320 sprintf(cursor
, "%02x", parameter_1
[i
]);
5325 for (i
= 0; i
< parameter_2_len
; i
++) {
5326 sprintf(cursor
, "%02x", parameter_2
[i
]);
5331 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5332 OPENSSL_clear_free(out
, out_len
);
5337 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5338 const uint8_t *encrypted_premaster
,
5339 size_t encrypted_premaster_len
,
5340 const uint8_t *premaster
,
5341 size_t premaster_len
)
5343 if (encrypted_premaster_len
< 8) {
5344 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5345 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5349 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5350 return nss_keylog_int("RSA",
5352 encrypted_premaster
,
5358 int ssl_log_secret(SSL
*ssl
,
5360 const uint8_t *secret
,
5363 return nss_keylog_int(label
,
5365 ssl
->s3
.client_random
,
5371 #define SSLV2_CIPHER_LEN 3
5373 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5377 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5379 if (PACKET_remaining(cipher_suites
) == 0) {
5380 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5381 SSL_R_NO_CIPHERS_SPECIFIED
);
5385 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5386 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5387 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5391 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5392 s
->s3
.tmp
.ciphers_raw
= NULL
;
5393 s
->s3
.tmp
.ciphers_rawlen
= 0;
5396 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5397 PACKET sslv2ciphers
= *cipher_suites
;
5398 unsigned int leadbyte
;
5402 * We store the raw ciphers list in SSLv3+ format so we need to do some
5403 * preprocessing to convert the list first. If there are any SSLv2 only
5404 * ciphersuites with a non-zero leading byte then we are going to
5405 * slightly over allocate because we won't store those. But that isn't a
5408 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5409 s
->s3
.tmp
.ciphers_raw
= raw
;
5411 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5412 ERR_R_MALLOC_FAILURE
);
5415 for (s
->s3
.tmp
.ciphers_rawlen
= 0;
5416 PACKET_remaining(&sslv2ciphers
) > 0;
5417 raw
+= TLS_CIPHER_LEN
) {
5418 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5420 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5423 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5424 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5426 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5427 s
->s3
.tmp
.ciphers_raw
= NULL
;
5428 s
->s3
.tmp
.ciphers_rawlen
= 0;
5432 s
->s3
.tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5434 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
.tmp
.ciphers_raw
,
5435 &s
->s3
.tmp
.ciphers_rawlen
)) {
5436 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5437 ERR_R_INTERNAL_ERROR
);
5443 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5444 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5445 STACK_OF(SSL_CIPHER
) **scsvs
)
5449 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5451 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5454 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5455 STACK_OF(SSL_CIPHER
) **skp
,
5456 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5457 int sslv2format
, int fatal
)
5459 const SSL_CIPHER
*c
;
5460 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5461 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5463 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5464 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5466 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5468 if (PACKET_remaining(cipher_suites
) == 0) {
5470 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5471 SSL_R_NO_CIPHERS_SPECIFIED
);
5473 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5477 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5479 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5480 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5482 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5483 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5487 sk
= sk_SSL_CIPHER_new_null();
5488 scsvs
= sk_SSL_CIPHER_new_null();
5489 if (sk
== NULL
|| scsvs
== NULL
) {
5491 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5492 ERR_R_MALLOC_FAILURE
);
5494 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5498 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5500 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5501 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5502 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5504 if (sslv2format
&& cipher
[0] != '\0')
5507 /* For SSLv2-compat, ignore leading 0-byte. */
5508 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5510 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5511 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5513 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5514 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5516 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5521 if (PACKET_remaining(cipher_suites
) > 0) {
5523 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5526 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5533 sk_SSL_CIPHER_free(sk
);
5534 if (scsvs_out
!= NULL
)
5537 sk_SSL_CIPHER_free(scsvs
);
5540 sk_SSL_CIPHER_free(sk
);
5541 sk_SSL_CIPHER_free(scsvs
);
5545 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5547 ctx
->max_early_data
= max_early_data
;
5552 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5554 return ctx
->max_early_data
;
5557 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5559 s
->max_early_data
= max_early_data
;
5564 uint32_t SSL_get_max_early_data(const SSL
*s
)
5566 return s
->max_early_data
;
5569 int SSL_CTX_set_recv_max_early_data(SSL_CTX
*ctx
, uint32_t recv_max_early_data
)
5571 ctx
->recv_max_early_data
= recv_max_early_data
;
5576 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX
*ctx
)
5578 return ctx
->recv_max_early_data
;
5581 int SSL_set_recv_max_early_data(SSL
*s
, uint32_t recv_max_early_data
)
5583 s
->recv_max_early_data
= recv_max_early_data
;
5588 uint32_t SSL_get_recv_max_early_data(const SSL
*s
)
5590 return s
->recv_max_early_data
;
5593 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5595 /* Return any active Max Fragment Len extension */
5596 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5597 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5599 /* return current SSL connection setting */
5600 return ssl
->max_send_fragment
;
5603 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5605 /* Return a value regarding an active Max Fragment Len extension */
5606 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5607 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5608 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5610 /* else limit |split_send_fragment| to current |max_send_fragment| */
5611 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5612 return ssl
->max_send_fragment
;
5614 /* return current SSL connection setting */
5615 return ssl
->split_send_fragment
;
5618 int SSL_stateless(SSL
*s
)
5622 /* Ensure there is no state left over from a previous invocation */
5628 s
->s3
.flags
|= TLS1_FLAGS_STATELESS
;
5629 ret
= SSL_accept(s
);
5630 s
->s3
.flags
&= ~TLS1_FLAGS_STATELESS
;
5632 if (ret
> 0 && s
->ext
.cookieok
)
5635 if (s
->hello_retry_request
== SSL_HRR_PENDING
&& !ossl_statem_in_error(s
))
5641 void SSL_CTX_set_post_handshake_auth(SSL_CTX
*ctx
, int val
)
5643 ctx
->pha_enabled
= val
;
5646 void SSL_set_post_handshake_auth(SSL
*ssl
, int val
)
5648 ssl
->pha_enabled
= val
;
5651 int SSL_verify_client_post_handshake(SSL
*ssl
)
5653 if (!SSL_IS_TLS13(ssl
)) {
5654 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_WRONG_SSL_VERSION
);
5658 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_NOT_SERVER
);
5662 if (!SSL_is_init_finished(ssl
)) {
5663 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_STILL_IN_INIT
);
5667 switch (ssl
->post_handshake_auth
) {
5669 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_EXTENSION_NOT_RECEIVED
);
5672 case SSL_PHA_EXT_SENT
:
5673 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, ERR_R_INTERNAL_ERROR
);
5675 case SSL_PHA_EXT_RECEIVED
:
5677 case SSL_PHA_REQUEST_PENDING
:
5678 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_PENDING
);
5680 case SSL_PHA_REQUESTED
:
5681 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_SENT
);
5685 ssl
->post_handshake_auth
= SSL_PHA_REQUEST_PENDING
;
5687 /* checks verify_mode and algorithm_auth */
5688 if (!send_certificate_request(ssl
)) {
5689 ssl
->post_handshake_auth
= SSL_PHA_EXT_RECEIVED
; /* restore on error */
5690 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_INVALID_CONFIG
);
5694 ossl_statem_set_in_init(ssl
, 1);
5698 int SSL_CTX_set_session_ticket_cb(SSL_CTX
*ctx
,
5699 SSL_CTX_generate_session_ticket_fn gen_cb
,
5700 SSL_CTX_decrypt_session_ticket_fn dec_cb
,
5703 ctx
->generate_ticket_cb
= gen_cb
;
5704 ctx
->decrypt_ticket_cb
= dec_cb
;
5705 ctx
->ticket_cb_data
= arg
;
5709 void SSL_CTX_set_allow_early_data_cb(SSL_CTX
*ctx
,
5710 SSL_allow_early_data_cb_fn cb
,
5713 ctx
->allow_early_data_cb
= cb
;
5714 ctx
->allow_early_data_cb_data
= arg
;
5717 void SSL_set_allow_early_data_cb(SSL
*s
,
5718 SSL_allow_early_data_cb_fn cb
,
5721 s
->allow_early_data_cb
= cb
;
5722 s
->allow_early_data_cb_data
= arg
;