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
);
633 * Check to see if we were changed into a different method, if so, revert
636 if (s
->method
!= s
->ctx
->method
) {
637 s
->method
->ssl_free(s
);
638 s
->method
= s
->ctx
->method
;
639 if (!s
->method
->ssl_new(s
))
642 if (!s
->method
->ssl_clear(s
))
646 RECORD_LAYER_clear(&s
->rlayer
);
651 /** Used to change an SSL_CTXs default SSL method type */
652 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
654 STACK_OF(SSL_CIPHER
) *sk
;
658 if (!SSL_CTX_set_ciphersuites(ctx
, OSSL_default_ciphersuites())) {
659 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
662 sk
= ssl_create_cipher_list(ctx
->method
,
663 ctx
->tls13_ciphersuites
,
665 &(ctx
->cipher_list_by_id
),
666 OSSL_default_cipher_list(), ctx
->cert
);
667 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
668 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
674 SSL
*SSL_new(SSL_CTX
*ctx
)
679 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
682 if (ctx
->method
== NULL
) {
683 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
687 s
= OPENSSL_zalloc(sizeof(*s
));
692 s
->lock
= CRYPTO_THREAD_lock_new();
693 if (s
->lock
== NULL
) {
699 RECORD_LAYER_init(&s
->rlayer
, s
);
701 s
->options
= ctx
->options
;
702 s
->dane
.flags
= ctx
->dane
.flags
;
703 s
->min_proto_version
= ctx
->min_proto_version
;
704 s
->max_proto_version
= ctx
->max_proto_version
;
706 s
->max_cert_list
= ctx
->max_cert_list
;
707 s
->max_early_data
= ctx
->max_early_data
;
708 s
->recv_max_early_data
= ctx
->recv_max_early_data
;
709 s
->num_tickets
= ctx
->num_tickets
;
710 s
->pha_enabled
= ctx
->pha_enabled
;
712 /* Shallow copy of the ciphersuites stack */
713 s
->tls13_ciphersuites
= sk_SSL_CIPHER_dup(ctx
->tls13_ciphersuites
);
714 if (s
->tls13_ciphersuites
== NULL
)
718 * Earlier library versions used to copy the pointer to the CERT, not
719 * its contents; only when setting new parameters for the per-SSL
720 * copy, ssl_cert_new would be called (and the direct reference to
721 * the per-SSL_CTX settings would be lost, but those still were
722 * indirectly accessed for various purposes, and for that reason they
723 * used to be known as s->ctx->default_cert). Now we don't look at the
724 * SSL_CTX's CERT after having duplicated it once.
726 s
->cert
= ssl_cert_dup(ctx
->cert
);
730 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
731 s
->msg_callback
= ctx
->msg_callback
;
732 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
733 s
->verify_mode
= ctx
->verify_mode
;
734 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
735 s
->record_padding_cb
= ctx
->record_padding_cb
;
736 s
->record_padding_arg
= ctx
->record_padding_arg
;
737 s
->block_padding
= ctx
->block_padding
;
738 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
739 if (!ossl_assert(s
->sid_ctx_length
<= sizeof(s
->sid_ctx
)))
741 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
742 s
->verify_callback
= ctx
->default_verify_callback
;
743 s
->generate_session_id
= ctx
->generate_session_id
;
745 s
->param
= X509_VERIFY_PARAM_new();
746 if (s
->param
== NULL
)
748 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
749 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
751 s
->ext
.max_fragment_len_mode
= ctx
->ext
.max_fragment_len_mode
;
752 s
->max_send_fragment
= ctx
->max_send_fragment
;
753 s
->split_send_fragment
= ctx
->split_send_fragment
;
754 s
->max_pipelines
= ctx
->max_pipelines
;
755 if (s
->max_pipelines
> 1)
756 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
757 if (ctx
->default_read_buf_len
> 0)
758 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
763 s
->ext
.debug_arg
= NULL
;
764 s
->ext
.ticket_expected
= 0;
765 s
->ext
.status_type
= ctx
->ext
.status_type
;
766 s
->ext
.status_expected
= 0;
767 s
->ext
.ocsp
.ids
= NULL
;
768 s
->ext
.ocsp
.exts
= NULL
;
769 s
->ext
.ocsp
.resp
= NULL
;
770 s
->ext
.ocsp
.resp_len
= 0;
772 s
->session_ctx
= ctx
;
773 #ifndef OPENSSL_NO_EC
774 if (ctx
->ext
.ecpointformats
) {
775 s
->ext
.ecpointformats
=
776 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
777 ctx
->ext
.ecpointformats_len
);
778 if (!s
->ext
.ecpointformats
)
780 s
->ext
.ecpointformats_len
=
781 ctx
->ext
.ecpointformats_len
;
784 if (ctx
->ext
.supportedgroups
) {
785 s
->ext
.supportedgroups
=
786 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
787 ctx
->ext
.supportedgroups_len
788 * sizeof(*ctx
->ext
.supportedgroups
));
789 if (!s
->ext
.supportedgroups
)
791 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
794 #ifndef OPENSSL_NO_NEXTPROTONEG
798 if (s
->ctx
->ext
.alpn
) {
799 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
800 if (s
->ext
.alpn
== NULL
)
802 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
803 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
806 s
->verified_chain
= NULL
;
807 s
->verify_result
= X509_V_OK
;
809 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
810 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
812 s
->method
= ctx
->method
;
814 s
->key_update
= SSL_KEY_UPDATE_NONE
;
816 s
->allow_early_data_cb
= ctx
->allow_early_data_cb
;
817 s
->allow_early_data_cb_data
= ctx
->allow_early_data_cb_data
;
819 if (!s
->method
->ssl_new(s
))
822 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
827 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
830 #ifndef OPENSSL_NO_PSK
831 s
->psk_client_callback
= ctx
->psk_client_callback
;
832 s
->psk_server_callback
= ctx
->psk_server_callback
;
834 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
835 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
837 s
->async_cb
= ctx
->async_cb
;
838 s
->async_cb_arg
= ctx
->async_cb_arg
;
842 #ifndef OPENSSL_NO_CT
843 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
844 ctx
->ct_validation_callback_arg
))
851 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
855 int SSL_is_dtls(const SSL
*s
)
857 return SSL_IS_DTLS(s
) ? 1 : 0;
860 int SSL_up_ref(SSL
*s
)
864 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
867 REF_PRINT_COUNT("SSL", s
);
868 REF_ASSERT_ISNT(i
< 2);
869 return ((i
> 1) ? 1 : 0);
872 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
873 unsigned int sid_ctx_len
)
875 if (sid_ctx_len
> sizeof(ctx
->sid_ctx
)) {
876 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
877 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
880 ctx
->sid_ctx_length
= sid_ctx_len
;
881 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
886 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
887 unsigned int sid_ctx_len
)
889 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
890 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
891 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
894 ssl
->sid_ctx_length
= sid_ctx_len
;
895 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
900 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
902 CRYPTO_THREAD_write_lock(ctx
->lock
);
903 ctx
->generate_session_id
= cb
;
904 CRYPTO_THREAD_unlock(ctx
->lock
);
908 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
910 CRYPTO_THREAD_write_lock(ssl
->lock
);
911 ssl
->generate_session_id
= cb
;
912 CRYPTO_THREAD_unlock(ssl
->lock
);
916 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
920 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
921 * we can "construct" a session to give us the desired check - i.e. to
922 * find if there's a session in the hash table that would conflict with
923 * any new session built out of this id/id_len and the ssl_version in use
928 if (id_len
> sizeof(r
.session_id
))
931 r
.ssl_version
= ssl
->version
;
932 r
.session_id_length
= id_len
;
933 memcpy(r
.session_id
, id
, id_len
);
935 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
936 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
937 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
941 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
943 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
946 int SSL_set_purpose(SSL
*s
, int purpose
)
948 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
951 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
953 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
956 int SSL_set_trust(SSL
*s
, int trust
)
958 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
961 int SSL_set1_host(SSL
*s
, const char *hostname
)
963 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
966 int SSL_add1_host(SSL
*s
, const char *hostname
)
968 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
971 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
973 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
976 const char *SSL_get0_peername(SSL
*s
)
978 return X509_VERIFY_PARAM_get0_peername(s
->param
);
981 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
983 return dane_ctx_enable(&ctx
->dane
);
986 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
988 unsigned long orig
= ctx
->dane
.flags
;
990 ctx
->dane
.flags
|= flags
;
994 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
996 unsigned long orig
= ctx
->dane
.flags
;
998 ctx
->dane
.flags
&= ~flags
;
1002 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
1004 SSL_DANE
*dane
= &s
->dane
;
1006 if (s
->ctx
->dane
.mdmax
== 0) {
1007 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
1010 if (dane
->trecs
!= NULL
) {
1011 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1016 * Default SNI name. This rejects empty names, while set1_host below
1017 * accepts them and disables host name checks. To avoid side-effects with
1018 * invalid input, set the SNI name first.
1020 if (s
->ext
.hostname
== NULL
) {
1021 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1022 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1027 /* Primary RFC6125 reference identifier */
1028 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1029 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1035 dane
->dctx
= &s
->ctx
->dane
;
1036 dane
->trecs
= sk_danetls_record_new_null();
1038 if (dane
->trecs
== NULL
) {
1039 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1045 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1047 unsigned long orig
= ssl
->dane
.flags
;
1049 ssl
->dane
.flags
|= flags
;
1053 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1055 unsigned long orig
= ssl
->dane
.flags
;
1057 ssl
->dane
.flags
&= ~flags
;
1061 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1063 SSL_DANE
*dane
= &s
->dane
;
1065 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1069 *mcert
= dane
->mcert
;
1071 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1076 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1077 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1079 SSL_DANE
*dane
= &s
->dane
;
1081 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1085 *usage
= dane
->mtlsa
->usage
;
1087 *selector
= dane
->mtlsa
->selector
;
1089 *mtype
= dane
->mtlsa
->mtype
;
1091 *data
= dane
->mtlsa
->data
;
1093 *dlen
= dane
->mtlsa
->dlen
;
1098 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1103 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1104 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1106 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1109 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1112 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1115 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1117 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1120 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1122 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1125 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1130 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1135 void SSL_certs_clear(SSL
*s
)
1137 ssl_cert_clear_certs(s
->cert
);
1140 void SSL_free(SSL
*s
)
1146 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1147 REF_PRINT_COUNT("SSL", s
);
1150 REF_ASSERT_ISNT(i
< 0);
1152 X509_VERIFY_PARAM_free(s
->param
);
1153 dane_final(&s
->dane
);
1154 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1156 RECORD_LAYER_release(&s
->rlayer
);
1158 /* Ignore return value */
1159 ssl_free_wbio_buffer(s
);
1161 BIO_free_all(s
->wbio
);
1163 BIO_free_all(s
->rbio
);
1166 BUF_MEM_free(s
->init_buf
);
1168 /* add extra stuff */
1169 sk_SSL_CIPHER_free(s
->cipher_list
);
1170 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1171 sk_SSL_CIPHER_free(s
->tls13_ciphersuites
);
1172 sk_SSL_CIPHER_free(s
->peer_ciphers
);
1174 /* Make the next call work :-) */
1175 if (s
->session
!= NULL
) {
1176 ssl_clear_bad_session(s
);
1177 SSL_SESSION_free(s
->session
);
1179 SSL_SESSION_free(s
->psksession
);
1180 OPENSSL_free(s
->psksession_id
);
1184 ssl_cert_free(s
->cert
);
1185 /* Free up if allocated */
1187 OPENSSL_free(s
->ext
.hostname
);
1188 SSL_CTX_free(s
->session_ctx
);
1189 #ifndef OPENSSL_NO_EC
1190 OPENSSL_free(s
->ext
.ecpointformats
);
1191 OPENSSL_free(s
->ext
.peer_ecpointformats
);
1192 OPENSSL_free(s
->ext
.supportedgroups
);
1193 OPENSSL_free(s
->ext
.peer_supportedgroups
);
1194 #endif /* OPENSSL_NO_EC */
1195 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1196 #ifndef OPENSSL_NO_OCSP
1197 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1199 #ifndef OPENSSL_NO_CT
1200 SCT_LIST_free(s
->scts
);
1201 OPENSSL_free(s
->ext
.scts
);
1203 OPENSSL_free(s
->ext
.ocsp
.resp
);
1204 OPENSSL_free(s
->ext
.alpn
);
1205 OPENSSL_free(s
->ext
.tls13_cookie
);
1206 OPENSSL_free(s
->clienthello
);
1207 OPENSSL_free(s
->pha_context
);
1208 EVP_MD_CTX_free(s
->pha_dgst
);
1210 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1211 sk_X509_NAME_pop_free(s
->client_ca_names
, X509_NAME_free
);
1213 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1215 if (s
->method
!= NULL
)
1216 s
->method
->ssl_free(s
);
1218 SSL_CTX_free(s
->ctx
);
1220 ASYNC_WAIT_CTX_free(s
->waitctx
);
1222 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1223 OPENSSL_free(s
->ext
.npn
);
1226 #ifndef OPENSSL_NO_SRTP
1227 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1230 CRYPTO_THREAD_lock_free(s
->lock
);
1235 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1237 BIO_free_all(s
->rbio
);
1241 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1244 * If the output buffering BIO is still in place, remove it
1246 if (s
->bbio
!= NULL
)
1247 s
->wbio
= BIO_pop(s
->wbio
);
1249 BIO_free_all(s
->wbio
);
1252 /* Re-attach |bbio| to the new |wbio|. */
1253 if (s
->bbio
!= NULL
)
1254 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1257 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1260 * For historical reasons, this function has many different cases in
1261 * ownership handling.
1264 /* If nothing has changed, do nothing */
1265 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1269 * If the two arguments are equal then one fewer reference is granted by the
1270 * caller than we want to take
1272 if (rbio
!= NULL
&& rbio
== wbio
)
1276 * If only the wbio is changed only adopt one reference.
1278 if (rbio
== SSL_get_rbio(s
)) {
1279 SSL_set0_wbio(s
, wbio
);
1283 * There is an asymmetry here for historical reasons. If only the rbio is
1284 * changed AND the rbio and wbio were originally different, then we only
1285 * adopt one reference.
1287 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1288 SSL_set0_rbio(s
, rbio
);
1292 /* Otherwise, adopt both references. */
1293 SSL_set0_rbio(s
, rbio
);
1294 SSL_set0_wbio(s
, wbio
);
1297 BIO
*SSL_get_rbio(const SSL
*s
)
1302 BIO
*SSL_get_wbio(const SSL
*s
)
1304 if (s
->bbio
!= NULL
) {
1306 * If |bbio| is active, the true caller-configured BIO is its
1309 return BIO_next(s
->bbio
);
1314 int SSL_get_fd(const SSL
*s
)
1316 return SSL_get_rfd(s
);
1319 int SSL_get_rfd(const SSL
*s
)
1324 b
= SSL_get_rbio(s
);
1325 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1327 BIO_get_fd(r
, &ret
);
1331 int SSL_get_wfd(const SSL
*s
)
1336 b
= SSL_get_wbio(s
);
1337 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1339 BIO_get_fd(r
, &ret
);
1343 #ifndef OPENSSL_NO_SOCK
1344 int SSL_set_fd(SSL
*s
, int fd
)
1349 bio
= BIO_new(BIO_s_socket());
1352 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1355 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1356 SSL_set_bio(s
, bio
, bio
);
1357 #ifndef OPENSSL_NO_KTLS
1359 * The new socket is created successfully regardless of ktls_enable.
1360 * ktls_enable doesn't change any functionality of the socket, except
1361 * changing the setsockopt to enable the processing of ktls_start.
1362 * Thus, it is not a problem to call it for non-TLS sockets.
1365 #endif /* OPENSSL_NO_KTLS */
1371 int SSL_set_wfd(SSL
*s
, int fd
)
1373 BIO
*rbio
= SSL_get_rbio(s
);
1375 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1376 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1377 BIO
*bio
= BIO_new(BIO_s_socket());
1380 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1383 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1384 SSL_set0_wbio(s
, bio
);
1385 #ifndef OPENSSL_NO_KTLS
1387 * The new socket is created successfully regardless of ktls_enable.
1388 * ktls_enable doesn't change any functionality of the socket, except
1389 * changing the setsockopt to enable the processing of ktls_start.
1390 * Thus, it is not a problem to call it for non-TLS sockets.
1393 #endif /* OPENSSL_NO_KTLS */
1396 SSL_set0_wbio(s
, rbio
);
1401 int SSL_set_rfd(SSL
*s
, int fd
)
1403 BIO
*wbio
= SSL_get_wbio(s
);
1405 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1406 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1407 BIO
*bio
= BIO_new(BIO_s_socket());
1410 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1413 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1414 SSL_set0_rbio(s
, bio
);
1417 SSL_set0_rbio(s
, wbio
);
1424 /* return length of latest Finished message we sent, copy to 'buf' */
1425 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1429 ret
= s
->s3
.tmp
.finish_md_len
;
1432 memcpy(buf
, s
->s3
.tmp
.finish_md
, count
);
1436 /* return length of latest Finished message we expected, copy to 'buf' */
1437 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1441 ret
= s
->s3
.tmp
.peer_finish_md_len
;
1444 memcpy(buf
, s
->s3
.tmp
.peer_finish_md
, count
);
1448 int SSL_get_verify_mode(const SSL
*s
)
1450 return s
->verify_mode
;
1453 int SSL_get_verify_depth(const SSL
*s
)
1455 return X509_VERIFY_PARAM_get_depth(s
->param
);
1458 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1459 return s
->verify_callback
;
1462 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1464 return ctx
->verify_mode
;
1467 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1469 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1472 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1473 return ctx
->default_verify_callback
;
1476 void SSL_set_verify(SSL
*s
, int mode
,
1477 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1479 s
->verify_mode
= mode
;
1480 if (callback
!= NULL
)
1481 s
->verify_callback
= callback
;
1484 void SSL_set_verify_depth(SSL
*s
, int depth
)
1486 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1489 void SSL_set_read_ahead(SSL
*s
, int yes
)
1491 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1494 int SSL_get_read_ahead(const SSL
*s
)
1496 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1499 int SSL_pending(const SSL
*s
)
1501 size_t pending
= s
->method
->ssl_pending(s
);
1504 * SSL_pending cannot work properly if read-ahead is enabled
1505 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1506 * impossible to fix since SSL_pending cannot report errors that may be
1507 * observed while scanning the new data. (Note that SSL_pending() is
1508 * often used as a boolean value, so we'd better not return -1.)
1510 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1511 * we just return INT_MAX.
1513 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1516 int SSL_has_pending(const SSL
*s
)
1519 * Similar to SSL_pending() but returns a 1 to indicate that we have
1520 * unprocessed data available or 0 otherwise (as opposed to the number of
1521 * bytes available). Unlike SSL_pending() this will take into account
1522 * read_ahead data. A 1 return simply indicates that we have unprocessed
1523 * data. That data may not result in any application data, or we may fail
1524 * to parse the records for some reason.
1526 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1529 return RECORD_LAYER_read_pending(&s
->rlayer
);
1532 X509
*SSL_get_peer_certificate(const SSL
*s
)
1536 if ((s
== NULL
) || (s
->session
== NULL
))
1539 r
= s
->session
->peer
;
1549 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1553 if ((s
== NULL
) || (s
->session
== NULL
))
1556 r
= s
->session
->peer_chain
;
1559 * If we are a client, cert_chain includes the peer's own certificate; if
1560 * we are a server, it does not.
1567 * Now in theory, since the calling process own 't' it should be safe to
1568 * modify. We need to be able to read f without being hassled
1570 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1573 /* Do we need to to SSL locking? */
1574 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1579 * what if we are setup for one protocol version but want to talk another
1581 if (t
->method
!= f
->method
) {
1582 t
->method
->ssl_free(t
);
1583 t
->method
= f
->method
;
1584 if (t
->method
->ssl_new(t
) == 0)
1588 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1589 ssl_cert_free(t
->cert
);
1591 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1598 /* Fix this so it checks all the valid key/cert options */
1599 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1601 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1602 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1605 if (ctx
->cert
->key
->privatekey
== NULL
) {
1606 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1609 return X509_check_private_key
1610 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1613 /* Fix this function so that it takes an optional type parameter */
1614 int SSL_check_private_key(const SSL
*ssl
)
1617 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1620 if (ssl
->cert
->key
->x509
== NULL
) {
1621 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1624 if (ssl
->cert
->key
->privatekey
== NULL
) {
1625 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1628 return X509_check_private_key(ssl
->cert
->key
->x509
,
1629 ssl
->cert
->key
->privatekey
);
1632 int SSL_waiting_for_async(SSL
*s
)
1640 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1642 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1646 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1649 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1650 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1652 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1656 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1660 int SSL_CTX_set_async_callback(SSL_CTX
*ctx
, SSL_async_callback_fn callback
)
1662 ctx
->async_cb
= callback
;
1666 int SSL_CTX_set_async_callback_arg(SSL_CTX
*ctx
, void *arg
)
1668 ctx
->async_cb_arg
= arg
;
1672 int SSL_set_async_callback(SSL
*s
, SSL_async_callback_fn callback
)
1674 s
->async_cb
= callback
;
1678 int SSL_set_async_callback_arg(SSL
*s
, void *arg
)
1680 s
->async_cb_arg
= arg
;
1684 int SSL_get_async_status(SSL
*s
, int *status
)
1686 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1690 *status
= ASYNC_WAIT_CTX_get_status(ctx
);
1694 int SSL_accept(SSL
*s
)
1696 if (s
->handshake_func
== NULL
) {
1697 /* Not properly initialized yet */
1698 SSL_set_accept_state(s
);
1701 return SSL_do_handshake(s
);
1704 int SSL_connect(SSL
*s
)
1706 if (s
->handshake_func
== NULL
) {
1707 /* Not properly initialized yet */
1708 SSL_set_connect_state(s
);
1711 return SSL_do_handshake(s
);
1714 long SSL_get_default_timeout(const SSL
*s
)
1716 return s
->method
->get_timeout();
1719 static int ssl_async_wait_ctx_cb(void *arg
)
1721 SSL
*s
= (SSL
*)arg
;
1723 return s
->async_cb(s
, s
->async_cb_arg
);
1726 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1727 int (*func
) (void *))
1730 if (s
->waitctx
== NULL
) {
1731 s
->waitctx
= ASYNC_WAIT_CTX_new();
1732 if (s
->waitctx
== NULL
)
1734 if (s
->async_cb
!= NULL
1735 && !ASYNC_WAIT_CTX_set_callback
1736 (s
->waitctx
, ssl_async_wait_ctx_cb
, s
))
1739 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1740 sizeof(struct ssl_async_args
))) {
1742 s
->rwstate
= SSL_NOTHING
;
1743 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1746 s
->rwstate
= SSL_ASYNC_PAUSED
;
1749 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1755 s
->rwstate
= SSL_NOTHING
;
1756 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1757 /* Shouldn't happen */
1762 static int ssl_io_intern(void *vargs
)
1764 struct ssl_async_args
*args
;
1769 args
= (struct ssl_async_args
*)vargs
;
1773 switch (args
->type
) {
1775 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1777 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1779 return args
->f
.func_other(s
);
1784 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1786 if (s
->handshake_func
== NULL
) {
1787 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1791 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1792 s
->rwstate
= SSL_NOTHING
;
1796 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1797 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1798 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1802 * If we are a client and haven't received the ServerHello etc then we
1805 ossl_statem_check_finish_init(s
, 0);
1807 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1808 struct ssl_async_args args
;
1814 args
.type
= READFUNC
;
1815 args
.f
.func_read
= s
->method
->ssl_read
;
1817 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1818 *readbytes
= s
->asyncrw
;
1821 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1825 int SSL_read(SSL
*s
, void *buf
, int num
)
1831 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1835 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1838 * The cast is safe here because ret should be <= INT_MAX because num is
1842 ret
= (int)readbytes
;
1847 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1849 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1856 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1861 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1862 return SSL_READ_EARLY_DATA_ERROR
;
1865 switch (s
->early_data_state
) {
1866 case SSL_EARLY_DATA_NONE
:
1867 if (!SSL_in_before(s
)) {
1868 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1869 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1870 return SSL_READ_EARLY_DATA_ERROR
;
1874 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1875 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1876 ret
= SSL_accept(s
);
1879 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1880 return SSL_READ_EARLY_DATA_ERROR
;
1884 case SSL_EARLY_DATA_READ_RETRY
:
1885 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1886 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1887 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1889 * State machine will update early_data_state to
1890 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1893 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1894 != SSL_EARLY_DATA_FINISHED_READING
)) {
1895 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1896 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1897 : SSL_READ_EARLY_DATA_ERROR
;
1900 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1903 return SSL_READ_EARLY_DATA_FINISH
;
1906 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1907 return SSL_READ_EARLY_DATA_ERROR
;
1911 int SSL_get_early_data_status(const SSL
*s
)
1913 return s
->ext
.early_data
;
1916 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1918 if (s
->handshake_func
== NULL
) {
1919 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1923 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1926 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1927 struct ssl_async_args args
;
1933 args
.type
= READFUNC
;
1934 args
.f
.func_read
= s
->method
->ssl_peek
;
1936 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1937 *readbytes
= s
->asyncrw
;
1940 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1944 int SSL_peek(SSL
*s
, void *buf
, int num
)
1950 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1954 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1957 * The cast is safe here because ret should be <= INT_MAX because num is
1961 ret
= (int)readbytes
;
1967 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1969 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1976 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1978 if (s
->handshake_func
== NULL
) {
1979 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1983 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1984 s
->rwstate
= SSL_NOTHING
;
1985 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1989 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1990 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1991 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1992 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1995 /* If we are a client and haven't sent the Finished we better do that */
1996 ossl_statem_check_finish_init(s
, 1);
1998 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2000 struct ssl_async_args args
;
2003 args
.buf
= (void *)buf
;
2005 args
.type
= WRITEFUNC
;
2006 args
.f
.func_write
= s
->method
->ssl_write
;
2008 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
2009 *written
= s
->asyncrw
;
2012 return s
->method
->ssl_write(s
, buf
, num
, written
);
2016 ossl_ssize_t
SSL_sendfile(SSL
*s
, int fd
, off_t offset
, size_t size
, int flags
)
2020 if (s
->handshake_func
== NULL
) {
2021 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2025 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2026 s
->rwstate
= SSL_NOTHING
;
2027 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2031 if (!BIO_get_ktls_send(s
->wbio
)) {
2032 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2036 /* If we have an alert to send, lets send it */
2037 if (s
->s3
.alert_dispatch
) {
2038 ret
= (ossl_ssize_t
)s
->method
->ssl_dispatch_alert(s
);
2040 /* SSLfatal() already called if appropriate */
2043 /* if it went, fall through and send more stuff */
2046 s
->rwstate
= SSL_WRITING
;
2047 if (BIO_flush(s
->wbio
) <= 0) {
2048 if (!BIO_should_retry(s
->wbio
)) {
2049 s
->rwstate
= SSL_NOTHING
;
2052 set_sys_error(EAGAIN
);
2058 #ifndef OPENSSL_NO_KTLS
2059 ret
= ktls_sendfile(SSL_get_wfd(s
), fd
, offset
, size
, flags
);
2064 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2065 if ((get_last_sys_error() == EAGAIN
) ||
2066 (get_last_sys_error() == EINTR
) ||
2067 (get_last_sys_error() == EBUSY
))
2068 BIO_set_retry_write(s
->wbio
);
2071 #ifdef OPENSSL_NO_KTLS
2072 SYSerr(SYS_F_SENDFILE
, get_last_sys_error());
2074 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2078 s
->rwstate
= SSL_NOTHING
;
2082 int SSL_write(SSL
*s
, const void *buf
, int num
)
2088 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
2092 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
2095 * The cast is safe here because ret should be <= INT_MAX because num is
2104 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2106 int ret
= ssl_write_internal(s
, buf
, num
, written
);
2113 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2115 int ret
, early_data_state
;
2117 uint32_t partialwrite
;
2119 switch (s
->early_data_state
) {
2120 case SSL_EARLY_DATA_NONE
:
2122 || !SSL_in_before(s
)
2123 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
2124 && (s
->psk_use_session_cb
== NULL
))) {
2125 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
2126 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2131 case SSL_EARLY_DATA_CONNECT_RETRY
:
2132 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
2133 ret
= SSL_connect(s
);
2136 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
2141 case SSL_EARLY_DATA_WRITE_RETRY
:
2142 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2144 * We disable partial write for early data because we don't keep track
2145 * of how many bytes we've written between the SSL_write_ex() call and
2146 * the flush if the flush needs to be retried)
2148 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2149 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2150 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2151 s
->mode
|= partialwrite
;
2153 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2156 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2159 case SSL_EARLY_DATA_WRITE_FLUSH
:
2160 /* The buffering BIO is still in place so we need to flush it */
2161 if (statem_flush(s
) != 1)
2164 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2167 case SSL_EARLY_DATA_FINISHED_READING
:
2168 case SSL_EARLY_DATA_READ_RETRY
:
2169 early_data_state
= s
->early_data_state
;
2170 /* We are a server writing to an unauthenticated client */
2171 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2172 ret
= SSL_write_ex(s
, buf
, num
, written
);
2173 /* The buffering BIO is still in place */
2175 (void)BIO_flush(s
->wbio
);
2176 s
->early_data_state
= early_data_state
;
2180 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2185 int SSL_shutdown(SSL
*s
)
2188 * Note that this function behaves differently from what one might
2189 * expect. Return values are 0 for no success (yet), 1 for success; but
2190 * calling it once is usually not enough, even if blocking I/O is used
2191 * (see ssl3_shutdown).
2194 if (s
->handshake_func
== NULL
) {
2195 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2199 if (!SSL_in_init(s
)) {
2200 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2201 struct ssl_async_args args
;
2204 args
.type
= OTHERFUNC
;
2205 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2207 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2209 return s
->method
->ssl_shutdown(s
);
2212 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2217 int SSL_key_update(SSL
*s
, int updatetype
)
2220 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2221 * negotiated, and that it is appropriate to call SSL_key_update() instead
2222 * of SSL_renegotiate().
2224 if (!SSL_IS_TLS13(s
)) {
2225 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2229 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2230 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2231 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2235 if (!SSL_is_init_finished(s
)) {
2236 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2240 ossl_statem_set_in_init(s
, 1);
2241 s
->key_update
= updatetype
;
2245 int SSL_get_key_update_type(const SSL
*s
)
2247 return s
->key_update
;
2250 int SSL_renegotiate(SSL
*s
)
2252 if (SSL_IS_TLS13(s
)) {
2253 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2257 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2258 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2265 return s
->method
->ssl_renegotiate(s
);
2268 int SSL_renegotiate_abbreviated(SSL
*s
)
2270 if (SSL_IS_TLS13(s
)) {
2271 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2275 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2276 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2283 return s
->method
->ssl_renegotiate(s
);
2286 int SSL_renegotiate_pending(const SSL
*s
)
2289 * becomes true when negotiation is requested; false again once a
2290 * handshake has finished
2292 return (s
->renegotiate
!= 0);
2295 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2300 case SSL_CTRL_GET_READ_AHEAD
:
2301 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2302 case SSL_CTRL_SET_READ_AHEAD
:
2303 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2304 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2307 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2308 s
->msg_callback_arg
= parg
;
2312 return (s
->mode
|= larg
);
2313 case SSL_CTRL_CLEAR_MODE
:
2314 return (s
->mode
&= ~larg
);
2315 case SSL_CTRL_GET_MAX_CERT_LIST
:
2316 return (long)s
->max_cert_list
;
2317 case SSL_CTRL_SET_MAX_CERT_LIST
:
2320 l
= (long)s
->max_cert_list
;
2321 s
->max_cert_list
= (size_t)larg
;
2323 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2324 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2326 #ifndef OPENSSL_NO_KTLS
2327 if (s
->wbio
!= NULL
&& BIO_get_ktls_send(s
->wbio
))
2329 #endif /* OPENSSL_NO_KTLS */
2330 s
->max_send_fragment
= larg
;
2331 if (s
->max_send_fragment
< s
->split_send_fragment
)
2332 s
->split_send_fragment
= s
->max_send_fragment
;
2334 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2335 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2337 s
->split_send_fragment
= larg
;
2339 case SSL_CTRL_SET_MAX_PIPELINES
:
2340 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2342 s
->max_pipelines
= larg
;
2344 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2346 case SSL_CTRL_GET_RI_SUPPORT
:
2347 return s
->s3
.send_connection_binding
;
2348 case SSL_CTRL_CERT_FLAGS
:
2349 return (s
->cert
->cert_flags
|= larg
);
2350 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2351 return (s
->cert
->cert_flags
&= ~larg
);
2353 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2355 if (s
->s3
.tmp
.ciphers_raw
== NULL
)
2357 *(unsigned char **)parg
= s
->s3
.tmp
.ciphers_raw
;
2358 return (int)s
->s3
.tmp
.ciphers_rawlen
;
2360 return TLS_CIPHER_LEN
;
2362 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2363 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2365 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2369 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2370 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2371 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2372 &s
->min_proto_version
);
2373 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2374 return s
->min_proto_version
;
2375 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2376 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2377 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2378 &s
->max_proto_version
);
2379 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2380 return s
->max_proto_version
;
2382 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2386 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2389 case SSL_CTRL_SET_MSG_CALLBACK
:
2390 s
->msg_callback
= (void (*)
2391 (int write_p
, int version
, int content_type
,
2392 const void *buf
, size_t len
, SSL
*ssl
,
2397 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2401 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2403 return ctx
->sessions
;
2406 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2409 /* For some cases with ctx == NULL perform syntax checks */
2412 #ifndef OPENSSL_NO_EC
2413 case SSL_CTRL_SET_GROUPS_LIST
:
2414 return tls1_set_groups_list(NULL
, NULL
, parg
);
2416 case SSL_CTRL_SET_SIGALGS_LIST
:
2417 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2418 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2425 case SSL_CTRL_GET_READ_AHEAD
:
2426 return ctx
->read_ahead
;
2427 case SSL_CTRL_SET_READ_AHEAD
:
2428 l
= ctx
->read_ahead
;
2429 ctx
->read_ahead
= larg
;
2432 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2433 ctx
->msg_callback_arg
= parg
;
2436 case SSL_CTRL_GET_MAX_CERT_LIST
:
2437 return (long)ctx
->max_cert_list
;
2438 case SSL_CTRL_SET_MAX_CERT_LIST
:
2441 l
= (long)ctx
->max_cert_list
;
2442 ctx
->max_cert_list
= (size_t)larg
;
2445 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2448 l
= (long)ctx
->session_cache_size
;
2449 ctx
->session_cache_size
= (size_t)larg
;
2451 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2452 return (long)ctx
->session_cache_size
;
2453 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2454 l
= ctx
->session_cache_mode
;
2455 ctx
->session_cache_mode
= larg
;
2457 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2458 return ctx
->session_cache_mode
;
2460 case SSL_CTRL_SESS_NUMBER
:
2461 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2462 case SSL_CTRL_SESS_CONNECT
:
2463 return tsan_load(&ctx
->stats
.sess_connect
);
2464 case SSL_CTRL_SESS_CONNECT_GOOD
:
2465 return tsan_load(&ctx
->stats
.sess_connect_good
);
2466 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2467 return tsan_load(&ctx
->stats
.sess_connect_renegotiate
);
2468 case SSL_CTRL_SESS_ACCEPT
:
2469 return tsan_load(&ctx
->stats
.sess_accept
);
2470 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2471 return tsan_load(&ctx
->stats
.sess_accept_good
);
2472 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2473 return tsan_load(&ctx
->stats
.sess_accept_renegotiate
);
2474 case SSL_CTRL_SESS_HIT
:
2475 return tsan_load(&ctx
->stats
.sess_hit
);
2476 case SSL_CTRL_SESS_CB_HIT
:
2477 return tsan_load(&ctx
->stats
.sess_cb_hit
);
2478 case SSL_CTRL_SESS_MISSES
:
2479 return tsan_load(&ctx
->stats
.sess_miss
);
2480 case SSL_CTRL_SESS_TIMEOUTS
:
2481 return tsan_load(&ctx
->stats
.sess_timeout
);
2482 case SSL_CTRL_SESS_CACHE_FULL
:
2483 return tsan_load(&ctx
->stats
.sess_cache_full
);
2485 return (ctx
->mode
|= larg
);
2486 case SSL_CTRL_CLEAR_MODE
:
2487 return (ctx
->mode
&= ~larg
);
2488 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2489 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2491 ctx
->max_send_fragment
= larg
;
2492 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2493 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2495 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2496 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2498 ctx
->split_send_fragment
= larg
;
2500 case SSL_CTRL_SET_MAX_PIPELINES
:
2501 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2503 ctx
->max_pipelines
= larg
;
2505 case SSL_CTRL_CERT_FLAGS
:
2506 return (ctx
->cert
->cert_flags
|= larg
);
2507 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2508 return (ctx
->cert
->cert_flags
&= ~larg
);
2509 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2510 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2511 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2512 &ctx
->min_proto_version
);
2513 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2514 return ctx
->min_proto_version
;
2515 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2516 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2517 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2518 &ctx
->max_proto_version
);
2519 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2520 return ctx
->max_proto_version
;
2522 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2526 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2529 case SSL_CTRL_SET_MSG_CALLBACK
:
2530 ctx
->msg_callback
= (void (*)
2531 (int write_p
, int version
, int content_type
,
2532 const void *buf
, size_t len
, SSL
*ssl
,
2537 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2541 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2550 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2551 const SSL_CIPHER
*const *bp
)
2553 if ((*ap
)->id
> (*bp
)->id
)
2555 if ((*ap
)->id
< (*bp
)->id
)
2560 /** return a STACK of the ciphers available for the SSL and in order of
2562 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2565 if (s
->cipher_list
!= NULL
) {
2566 return s
->cipher_list
;
2567 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2568 return s
->ctx
->cipher_list
;
2574 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2576 if ((s
== NULL
) || !s
->server
)
2578 return s
->peer_ciphers
;
2581 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2583 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2586 ciphers
= SSL_get_ciphers(s
);
2589 if (!ssl_set_client_disabled(s
))
2591 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2592 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2593 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2595 sk
= sk_SSL_CIPHER_new_null();
2598 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2599 sk_SSL_CIPHER_free(sk
);
2607 /** return a STACK of the ciphers available for the SSL and in order of
2609 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2612 if (s
->cipher_list_by_id
!= NULL
) {
2613 return s
->cipher_list_by_id
;
2614 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2615 return s
->ctx
->cipher_list_by_id
;
2621 /** The old interface to get the same thing as SSL_get_ciphers() */
2622 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2624 const SSL_CIPHER
*c
;
2625 STACK_OF(SSL_CIPHER
) *sk
;
2629 sk
= SSL_get_ciphers(s
);
2630 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2632 c
= sk_SSL_CIPHER_value(sk
, n
);
2638 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2640 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2643 return ctx
->cipher_list
;
2648 * Distinguish between ciphers controlled by set_ciphersuite() and
2649 * set_cipher_list() when counting.
2651 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER
) *sk
)
2654 const SSL_CIPHER
*c
;
2658 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); ++i
) {
2659 c
= sk_SSL_CIPHER_value(sk
, i
);
2660 if (c
->min_tls
>= TLS1_3_VERSION
)
2667 /** specify the ciphers to be used by default by the SSL_CTX */
2668 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2670 STACK_OF(SSL_CIPHER
) *sk
;
2672 sk
= ssl_create_cipher_list(ctx
->method
, ctx
->tls13_ciphersuites
,
2673 &ctx
->cipher_list
, &ctx
->cipher_list_by_id
, str
,
2676 * ssl_create_cipher_list may return an empty stack if it was unable to
2677 * find a cipher matching the given rule string (for example if the rule
2678 * string specifies a cipher which has been disabled). This is not an
2679 * error as far as ssl_create_cipher_list is concerned, and hence
2680 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2684 else if (cipher_list_tls12_num(sk
) == 0) {
2685 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2691 /** specify the ciphers to be used by the SSL */
2692 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2694 STACK_OF(SSL_CIPHER
) *sk
;
2696 sk
= ssl_create_cipher_list(s
->ctx
->method
, s
->tls13_ciphersuites
,
2697 &s
->cipher_list
, &s
->cipher_list_by_id
, str
,
2699 /* see comment in SSL_CTX_set_cipher_list */
2702 else if (cipher_list_tls12_num(sk
) == 0) {
2703 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2709 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int size
)
2712 STACK_OF(SSL_CIPHER
) *clntsk
, *srvrsk
;
2713 const SSL_CIPHER
*c
;
2717 || s
->peer_ciphers
== NULL
2722 clntsk
= s
->peer_ciphers
;
2723 srvrsk
= SSL_get_ciphers(s
);
2724 if (clntsk
== NULL
|| srvrsk
== NULL
)
2727 if (sk_SSL_CIPHER_num(clntsk
) == 0 || sk_SSL_CIPHER_num(srvrsk
) == 0)
2730 for (i
= 0; i
< sk_SSL_CIPHER_num(clntsk
); i
++) {
2733 c
= sk_SSL_CIPHER_value(clntsk
, i
);
2734 if (sk_SSL_CIPHER_find(srvrsk
, c
) < 0)
2737 n
= strlen(c
->name
);
2753 /** return a servername extension value if provided in Client Hello, or NULL.
2754 * So far, only host_name types are defined (RFC 3546).
2757 const char *SSL_get_servername(const SSL
*s
, const int type
)
2759 if (type
!= TLSEXT_NAMETYPE_host_name
)
2763 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2764 * SNI value to return if we are resuming/resumed. N.B. that we still
2765 * call the relevant callbacks for such resumption flows, and callbacks
2766 * might error out if there is not a SNI value available.
2769 return s
->session
->ext
.hostname
;
2770 return s
->ext
.hostname
;
2773 int SSL_get_servername_type(const SSL
*s
)
2776 && (!s
->ext
.hostname
? s
->session
->
2777 ext
.hostname
: s
->ext
.hostname
))
2778 return TLSEXT_NAMETYPE_host_name
;
2783 * SSL_select_next_proto implements the standard protocol selection. It is
2784 * expected that this function is called from the callback set by
2785 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2786 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2787 * not included in the length. A byte string of length 0 is invalid. No byte
2788 * string may be truncated. The current, but experimental algorithm for
2789 * selecting the protocol is: 1) If the server doesn't support NPN then this
2790 * is indicated to the callback. In this case, the client application has to
2791 * abort the connection or have a default application level protocol. 2) If
2792 * the server supports NPN, but advertises an empty list then the client
2793 * selects the first protocol in its list, but indicates via the API that this
2794 * fallback case was enacted. 3) Otherwise, the client finds the first
2795 * protocol in the server's list that it supports and selects this protocol.
2796 * This is because it's assumed that the server has better information about
2797 * which protocol a client should use. 4) If the client doesn't support any
2798 * of the server's advertised protocols, then this is treated the same as
2799 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2800 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2802 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2803 const unsigned char *server
,
2804 unsigned int server_len
,
2805 const unsigned char *client
, unsigned int client_len
)
2808 const unsigned char *result
;
2809 int status
= OPENSSL_NPN_UNSUPPORTED
;
2812 * For each protocol in server preference order, see if we support it.
2814 for (i
= 0; i
< server_len
;) {
2815 for (j
= 0; j
< client_len
;) {
2816 if (server
[i
] == client
[j
] &&
2817 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2818 /* We found a match */
2819 result
= &server
[i
];
2820 status
= OPENSSL_NPN_NEGOTIATED
;
2830 /* There's no overlap between our protocols and the server's list. */
2832 status
= OPENSSL_NPN_NO_OVERLAP
;
2835 *out
= (unsigned char *)result
+ 1;
2836 *outlen
= result
[0];
2840 #ifndef OPENSSL_NO_NEXTPROTONEG
2842 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2843 * client's requested protocol for this connection and returns 0. If the
2844 * client didn't request any protocol, then *data is set to NULL. Note that
2845 * the client can request any protocol it chooses. The value returned from
2846 * this function need not be a member of the list of supported protocols
2847 * provided by the callback.
2849 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2856 *len
= (unsigned int)s
->ext
.npn_len
;
2861 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2862 * a TLS server needs a list of supported protocols for Next Protocol
2863 * Negotiation. The returned list must be in wire format. The list is
2864 * returned by setting |out| to point to it and |outlen| to its length. This
2865 * memory will not be modified, but one should assume that the SSL* keeps a
2866 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2867 * wishes to advertise. Otherwise, no such extension will be included in the
2870 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2871 SSL_CTX_npn_advertised_cb_func cb
,
2874 ctx
->ext
.npn_advertised_cb
= cb
;
2875 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2879 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2880 * client needs to select a protocol from the server's provided list. |out|
2881 * must be set to point to the selected protocol (which may be within |in|).
2882 * The length of the protocol name must be written into |outlen|. The
2883 * server's advertised protocols are provided in |in| and |inlen|. The
2884 * callback can assume that |in| is syntactically valid. The client must
2885 * select a protocol. It is fatal to the connection if this callback returns
2886 * a value other than SSL_TLSEXT_ERR_OK.
2888 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2889 SSL_CTX_npn_select_cb_func cb
,
2892 ctx
->ext
.npn_select_cb
= cb
;
2893 ctx
->ext
.npn_select_cb_arg
= arg
;
2898 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2899 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2900 * length-prefixed strings). Returns 0 on success.
2902 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2903 unsigned int protos_len
)
2905 OPENSSL_free(ctx
->ext
.alpn
);
2906 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2907 if (ctx
->ext
.alpn
== NULL
) {
2908 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2911 ctx
->ext
.alpn_len
= protos_len
;
2917 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2918 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2919 * length-prefixed strings). Returns 0 on success.
2921 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2922 unsigned int protos_len
)
2924 OPENSSL_free(ssl
->ext
.alpn
);
2925 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2926 if (ssl
->ext
.alpn
== NULL
) {
2927 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2930 ssl
->ext
.alpn_len
= protos_len
;
2936 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2937 * called during ClientHello processing in order to select an ALPN protocol
2938 * from the client's list of offered protocols.
2940 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2941 SSL_CTX_alpn_select_cb_func cb
,
2944 ctx
->ext
.alpn_select_cb
= cb
;
2945 ctx
->ext
.alpn_select_cb_arg
= arg
;
2949 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2950 * On return it sets |*data| to point to |*len| bytes of protocol name
2951 * (not including the leading length-prefix byte). If the server didn't
2952 * respond with a negotiated protocol then |*len| will be zero.
2954 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2957 *data
= ssl
->s3
.alpn_selected
;
2961 *len
= (unsigned int)ssl
->s3
.alpn_selected_len
;
2964 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2965 const char *label
, size_t llen
,
2966 const unsigned char *context
, size_t contextlen
,
2969 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2972 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2974 contextlen
, use_context
);
2977 int SSL_export_keying_material_early(SSL
*s
, unsigned char *out
, size_t olen
,
2978 const char *label
, size_t llen
,
2979 const unsigned char *context
,
2982 if (s
->version
!= TLS1_3_VERSION
)
2985 return tls13_export_keying_material_early(s
, out
, olen
, label
, llen
,
2986 context
, contextlen
);
2989 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2991 const unsigned char *session_id
= a
->session_id
;
2993 unsigned char tmp_storage
[4];
2995 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2996 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2997 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2998 session_id
= tmp_storage
;
3002 ((unsigned long)session_id
[0]) |
3003 ((unsigned long)session_id
[1] << 8L) |
3004 ((unsigned long)session_id
[2] << 16L) |
3005 ((unsigned long)session_id
[3] << 24L);
3010 * NB: If this function (or indeed the hash function which uses a sort of
3011 * coarser function than this one) is changed, ensure
3012 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3013 * being able to construct an SSL_SESSION that will collide with any existing
3014 * session with a matching session ID.
3016 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
3018 if (a
->ssl_version
!= b
->ssl_version
)
3020 if (a
->session_id_length
!= b
->session_id_length
)
3022 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
3026 * These wrapper functions should remain rather than redeclaring
3027 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3028 * variable. The reason is that the functions aren't static, they're exposed
3032 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
3034 SSL_CTX
*ret
= NULL
;
3037 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
3041 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
3044 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3045 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
3048 ret
= OPENSSL_zalloc(sizeof(*ret
));
3053 ret
->min_proto_version
= 0;
3054 ret
->max_proto_version
= 0;
3055 ret
->mode
= SSL_MODE_AUTO_RETRY
;
3056 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
3057 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
3058 /* We take the system default. */
3059 ret
->session_timeout
= meth
->get_timeout();
3060 ret
->references
= 1;
3061 ret
->lock
= CRYPTO_THREAD_lock_new();
3062 if (ret
->lock
== NULL
) {
3063 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3067 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
3068 ret
->verify_mode
= SSL_VERIFY_NONE
;
3069 if ((ret
->cert
= ssl_cert_new()) == NULL
)
3072 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
3073 if (ret
->sessions
== NULL
)
3075 ret
->cert_store
= X509_STORE_new();
3076 if (ret
->cert_store
== NULL
)
3078 #ifndef OPENSSL_NO_CT
3079 ret
->ctlog_store
= CTLOG_STORE_new();
3080 if (ret
->ctlog_store
== NULL
)
3084 if (!SSL_CTX_set_ciphersuites(ret
, OSSL_default_ciphersuites()))
3087 if (!ssl_create_cipher_list(ret
->method
,
3088 ret
->tls13_ciphersuites
,
3089 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
3090 OSSL_default_cipher_list(), ret
->cert
)
3091 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
3092 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
3096 ret
->param
= X509_VERIFY_PARAM_new();
3097 if (ret
->param
== NULL
)
3100 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
3101 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
3104 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
3105 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
3109 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
3112 if ((ret
->client_ca_names
= sk_X509_NAME_new_null()) == NULL
)
3115 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
3118 if ((ret
->ext
.secure
= OPENSSL_secure_zalloc(sizeof(*ret
->ext
.secure
))) == NULL
)
3121 /* No compression for DTLS */
3122 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
3123 ret
->comp_methods
= SSL_COMP_get_compression_methods();
3125 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3126 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3128 /* Setup RFC5077 ticket keys */
3129 if ((RAND_bytes(ret
->ext
.tick_key_name
,
3130 sizeof(ret
->ext
.tick_key_name
)) <= 0)
3131 || (RAND_priv_bytes(ret
->ext
.secure
->tick_hmac_key
,
3132 sizeof(ret
->ext
.secure
->tick_hmac_key
)) <= 0)
3133 || (RAND_priv_bytes(ret
->ext
.secure
->tick_aes_key
,
3134 sizeof(ret
->ext
.secure
->tick_aes_key
)) <= 0))
3135 ret
->options
|= SSL_OP_NO_TICKET
;
3137 if (RAND_priv_bytes(ret
->ext
.cookie_hmac_key
,
3138 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
3141 #ifndef OPENSSL_NO_SRP
3142 if (!SSL_CTX_SRP_CTX_init(ret
))
3145 #ifndef OPENSSL_NO_ENGINE
3146 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3147 # define eng_strx(x) #x
3148 # define eng_str(x) eng_strx(x)
3149 /* Use specific client engine automatically... ignore errors */
3152 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3155 ENGINE_load_builtin_engines();
3156 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3158 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
3164 * Default is to connect to non-RI servers. When RI is more widely
3165 * deployed might change this.
3167 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
3169 * Disable compression by default to prevent CRIME. Applications can
3170 * re-enable compression by configuring
3171 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3172 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3173 * middlebox compatibility by default. This may be disabled by default in
3174 * a later OpenSSL version.
3176 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
3178 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
3181 * We cannot usefully set a default max_early_data here (which gets
3182 * propagated in SSL_new(), for the following reason: setting the
3183 * SSL field causes tls_construct_stoc_early_data() to tell the
3184 * client that early data will be accepted when constructing a TLS 1.3
3185 * session ticket, and the client will accordingly send us early data
3186 * when using that ticket (if the client has early data to send).
3187 * However, in order for the early data to actually be consumed by
3188 * the application, the application must also have calls to
3189 * SSL_read_early_data(); otherwise we'll just skip past the early data
3190 * and ignore it. So, since the application must add calls to
3191 * SSL_read_early_data(), we also require them to add
3192 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3193 * eliminating the bandwidth-wasting early data in the case described
3196 ret
->max_early_data
= 0;
3199 * Default recv_max_early_data is a fully loaded single record. Could be
3200 * split across multiple records in practice. We set this differently to
3201 * max_early_data so that, in the default case, we do not advertise any
3202 * support for early_data, but if a client were to send us some (e.g.
3203 * because of an old, stale ticket) then we will tolerate it and skip over
3206 ret
->recv_max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
3208 /* By default we send two session tickets automatically in TLSv1.3 */
3209 ret
->num_tickets
= 2;
3211 ssl_ctx_system_config(ret
);
3215 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3221 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3225 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3228 REF_PRINT_COUNT("SSL_CTX", ctx
);
3229 REF_ASSERT_ISNT(i
< 2);
3230 return ((i
> 1) ? 1 : 0);
3233 void SSL_CTX_free(SSL_CTX
*a
)
3240 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3241 REF_PRINT_COUNT("SSL_CTX", a
);
3244 REF_ASSERT_ISNT(i
< 0);
3246 X509_VERIFY_PARAM_free(a
->param
);
3247 dane_ctx_final(&a
->dane
);
3250 * Free internal session cache. However: the remove_cb() may reference
3251 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3252 * after the sessions were flushed.
3253 * As the ex_data handling routines might also touch the session cache,
3254 * the most secure solution seems to be: empty (flush) the cache, then
3255 * free ex_data, then finally free the cache.
3256 * (See ticket [openssl.org #212].)
3258 if (a
->sessions
!= NULL
)
3259 SSL_CTX_flush_sessions(a
, 0);
3261 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3262 lh_SSL_SESSION_free(a
->sessions
);
3263 X509_STORE_free(a
->cert_store
);
3264 #ifndef OPENSSL_NO_CT
3265 CTLOG_STORE_free(a
->ctlog_store
);
3267 sk_SSL_CIPHER_free(a
->cipher_list
);
3268 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3269 sk_SSL_CIPHER_free(a
->tls13_ciphersuites
);
3270 ssl_cert_free(a
->cert
);
3271 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3272 sk_X509_NAME_pop_free(a
->client_ca_names
, X509_NAME_free
);
3273 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3274 a
->comp_methods
= NULL
;
3275 #ifndef OPENSSL_NO_SRTP
3276 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3278 #ifndef OPENSSL_NO_SRP
3279 SSL_CTX_SRP_CTX_free(a
);
3281 #ifndef OPENSSL_NO_ENGINE
3282 ENGINE_finish(a
->client_cert_engine
);
3285 #ifndef OPENSSL_NO_EC
3286 OPENSSL_free(a
->ext
.ecpointformats
);
3287 OPENSSL_free(a
->ext
.supportedgroups
);
3289 OPENSSL_free(a
->ext
.alpn
);
3290 OPENSSL_secure_free(a
->ext
.secure
);
3292 CRYPTO_THREAD_lock_free(a
->lock
);
3297 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3299 ctx
->default_passwd_callback
= cb
;
3302 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3304 ctx
->default_passwd_callback_userdata
= u
;
3307 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3309 return ctx
->default_passwd_callback
;
3312 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3314 return ctx
->default_passwd_callback_userdata
;
3317 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3319 s
->default_passwd_callback
= cb
;
3322 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3324 s
->default_passwd_callback_userdata
= u
;
3327 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3329 return s
->default_passwd_callback
;
3332 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3334 return s
->default_passwd_callback_userdata
;
3337 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3338 int (*cb
) (X509_STORE_CTX
*, void *),
3341 ctx
->app_verify_callback
= cb
;
3342 ctx
->app_verify_arg
= arg
;
3345 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3346 int (*cb
) (int, X509_STORE_CTX
*))
3348 ctx
->verify_mode
= mode
;
3349 ctx
->default_verify_callback
= cb
;
3352 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3354 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3357 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3359 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3362 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3364 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3367 void ssl_set_masks(SSL
*s
)
3370 uint32_t *pvalid
= s
->s3
.tmp
.valid_flags
;
3371 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3372 unsigned long mask_k
, mask_a
;
3373 #ifndef OPENSSL_NO_EC
3374 int have_ecc_cert
, ecdsa_ok
;
3379 #ifndef OPENSSL_NO_DH
3380 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3385 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3386 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3387 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3388 #ifndef OPENSSL_NO_EC
3389 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3394 OSSL_TRACE4(TLS_CIPHER
, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3395 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3397 #ifndef OPENSSL_NO_GOST
3398 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3399 mask_k
|= SSL_kGOST
;
3400 mask_a
|= SSL_aGOST12
;
3402 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3403 mask_k
|= SSL_kGOST
;
3404 mask_a
|= SSL_aGOST12
;
3406 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3407 mask_k
|= SSL_kGOST
;
3408 mask_a
|= SSL_aGOST01
;
3419 * If we only have an RSA-PSS certificate allow RSA authentication
3420 * if TLS 1.2 and peer supports it.
3423 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3424 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3425 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3432 mask_a
|= SSL_aNULL
;
3435 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3436 * depending on the key usage extension.
3438 #ifndef OPENSSL_NO_EC
3439 if (have_ecc_cert
) {
3441 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3442 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3443 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3446 mask_a
|= SSL_aECDSA
;
3448 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3449 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3450 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3451 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3452 mask_a
|= SSL_aECDSA
;
3454 /* Allow Ed448 for TLS 1.2 if peer supports it */
3455 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED448
)
3456 && pvalid
[SSL_PKEY_ED448
] & CERT_PKEY_EXPLICIT_SIGN
3457 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3458 mask_a
|= SSL_aECDSA
;
3461 #ifndef OPENSSL_NO_EC
3462 mask_k
|= SSL_kECDHE
;
3465 #ifndef OPENSSL_NO_PSK
3468 if (mask_k
& SSL_kRSA
)
3469 mask_k
|= SSL_kRSAPSK
;
3470 if (mask_k
& SSL_kDHE
)
3471 mask_k
|= SSL_kDHEPSK
;
3472 if (mask_k
& SSL_kECDHE
)
3473 mask_k
|= SSL_kECDHEPSK
;
3476 s
->s3
.tmp
.mask_k
= mask_k
;
3477 s
->s3
.tmp
.mask_a
= mask_a
;
3480 #ifndef OPENSSL_NO_EC
3482 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3484 if (s
->s3
.tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3485 /* key usage, if present, must allow signing */
3486 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3487 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3488 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3492 return 1; /* all checks are ok */
3497 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3498 size_t *serverinfo_length
)
3500 CERT_PKEY
*cpk
= s
->s3
.tmp
.cert
;
3501 *serverinfo_length
= 0;
3503 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3506 *serverinfo
= cpk
->serverinfo
;
3507 *serverinfo_length
= cpk
->serverinfo_length
;
3511 void ssl_update_cache(SSL
*s
, int mode
)
3516 * If the session_id_length is 0, we are not supposed to cache it, and it
3517 * would be rather hard to do anyway :-)
3519 if (s
->session
->session_id_length
== 0)
3523 * If sid_ctx_length is 0 there is no specific application context
3524 * associated with this session, so when we try to resume it and
3525 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3526 * indication that this is actually a session for the proper application
3527 * context, and the *handshake* will fail, not just the resumption attempt.
3528 * Do not cache (on the server) these sessions that are not resumable
3529 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3531 if (s
->server
&& s
->session
->sid_ctx_length
== 0
3532 && (s
->verify_mode
& SSL_VERIFY_PEER
) != 0)
3535 i
= s
->session_ctx
->session_cache_mode
;
3537 && (!s
->hit
|| SSL_IS_TLS13(s
))) {
3539 * Add the session to the internal cache. In server side TLSv1.3 we
3540 * normally don't do this because by default it's a full stateless ticket
3541 * with only a dummy session id so there is no reason to cache it,
3543 * - we are doing early_data, in which case we cache so that we can
3545 * - the application has set a remove_session_cb so needs to know about
3546 * session timeout events
3547 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3549 if ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) == 0
3550 && (!SSL_IS_TLS13(s
)
3552 || (s
->max_early_data
> 0
3553 && (s
->options
& SSL_OP_NO_ANTI_REPLAY
) == 0)
3554 || s
->session_ctx
->remove_session_cb
!= NULL
3555 || (s
->options
& SSL_OP_NO_TICKET
) != 0))
3556 SSL_CTX_add_session(s
->session_ctx
, s
->session
);
3559 * Add the session to the external cache. We do this even in server side
3560 * TLSv1.3 without early data because some applications just want to
3561 * know about the creation of a session and aren't doing a full cache.
3563 if (s
->session_ctx
->new_session_cb
!= NULL
) {
3564 SSL_SESSION_up_ref(s
->session
);
3565 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3566 SSL_SESSION_free(s
->session
);
3570 /* auto flush every 255 connections */
3571 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3572 TSAN_QUALIFIER
int *stat
;
3573 if (mode
& SSL_SESS_CACHE_CLIENT
)
3574 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3576 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3577 if ((tsan_load(stat
) & 0xff) == 0xff)
3578 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3582 const SSL_METHOD
*SSL_CTX_get_ssl_method(const SSL_CTX
*ctx
)
3587 const SSL_METHOD
*SSL_get_ssl_method(const SSL
*s
)
3592 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3596 if (s
->method
!= meth
) {
3597 const SSL_METHOD
*sm
= s
->method
;
3598 int (*hf
) (SSL
*) = s
->handshake_func
;
3600 if (sm
->version
== meth
->version
)
3605 ret
= s
->method
->ssl_new(s
);
3608 if (hf
== sm
->ssl_connect
)
3609 s
->handshake_func
= meth
->ssl_connect
;
3610 else if (hf
== sm
->ssl_accept
)
3611 s
->handshake_func
= meth
->ssl_accept
;
3616 int SSL_get_error(const SSL
*s
, int i
)
3623 return SSL_ERROR_NONE
;
3626 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3627 * where we do encode the error
3629 if ((l
= ERR_peek_error()) != 0) {
3630 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3631 return SSL_ERROR_SYSCALL
;
3633 return SSL_ERROR_SSL
;
3636 if (SSL_want_read(s
)) {
3637 bio
= SSL_get_rbio(s
);
3638 if (BIO_should_read(bio
))
3639 return SSL_ERROR_WANT_READ
;
3640 else if (BIO_should_write(bio
))
3642 * This one doesn't make too much sense ... We never try to write
3643 * to the rbio, and an application program where rbio and wbio
3644 * are separate couldn't even know what it should wait for.
3645 * However if we ever set s->rwstate incorrectly (so that we have
3646 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3647 * wbio *are* the same, this test works around that bug; so it
3648 * might be safer to keep it.
3650 return SSL_ERROR_WANT_WRITE
;
3651 else if (BIO_should_io_special(bio
)) {
3652 reason
= BIO_get_retry_reason(bio
);
3653 if (reason
== BIO_RR_CONNECT
)
3654 return SSL_ERROR_WANT_CONNECT
;
3655 else if (reason
== BIO_RR_ACCEPT
)
3656 return SSL_ERROR_WANT_ACCEPT
;
3658 return SSL_ERROR_SYSCALL
; /* unknown */
3662 if (SSL_want_write(s
)) {
3663 /* Access wbio directly - in order to use the buffered bio if present */
3665 if (BIO_should_write(bio
))
3666 return SSL_ERROR_WANT_WRITE
;
3667 else if (BIO_should_read(bio
))
3669 * See above (SSL_want_read(s) with BIO_should_write(bio))
3671 return SSL_ERROR_WANT_READ
;
3672 else if (BIO_should_io_special(bio
)) {
3673 reason
= BIO_get_retry_reason(bio
);
3674 if (reason
== BIO_RR_CONNECT
)
3675 return SSL_ERROR_WANT_CONNECT
;
3676 else if (reason
== BIO_RR_ACCEPT
)
3677 return SSL_ERROR_WANT_ACCEPT
;
3679 return SSL_ERROR_SYSCALL
;
3682 if (SSL_want_x509_lookup(s
))
3683 return SSL_ERROR_WANT_X509_LOOKUP
;
3684 if (SSL_want_async(s
))
3685 return SSL_ERROR_WANT_ASYNC
;
3686 if (SSL_want_async_job(s
))
3687 return SSL_ERROR_WANT_ASYNC_JOB
;
3688 if (SSL_want_client_hello_cb(s
))
3689 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3691 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3692 (s
->s3
.warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3693 return SSL_ERROR_ZERO_RETURN
;
3695 return SSL_ERROR_SYSCALL
;
3698 static int ssl_do_handshake_intern(void *vargs
)
3700 struct ssl_async_args
*args
;
3703 args
= (struct ssl_async_args
*)vargs
;
3706 return s
->handshake_func(s
);
3709 int SSL_do_handshake(SSL
*s
)
3713 if (s
->handshake_func
== NULL
) {
3714 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3718 ossl_statem_check_finish_init(s
, -1);
3720 s
->method
->ssl_renegotiate_check(s
, 0);
3722 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3723 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3724 struct ssl_async_args args
;
3728 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3730 ret
= s
->handshake_func(s
);
3736 void SSL_set_accept_state(SSL
*s
)
3740 ossl_statem_clear(s
);
3741 s
->handshake_func
= s
->method
->ssl_accept
;
3745 void SSL_set_connect_state(SSL
*s
)
3749 ossl_statem_clear(s
);
3750 s
->handshake_func
= s
->method
->ssl_connect
;
3754 int ssl_undefined_function(SSL
*s
)
3756 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3760 int ssl_undefined_void_function(void)
3762 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3763 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3767 int ssl_undefined_const_function(const SSL
*s
)
3772 const SSL_METHOD
*ssl_bad_method(int ver
)
3774 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3778 const char *ssl_protocol_to_string(int version
)
3782 case TLS1_3_VERSION
:
3785 case TLS1_2_VERSION
:
3788 case TLS1_1_VERSION
:
3803 case DTLS1_2_VERSION
:
3811 const char *SSL_get_version(const SSL
*s
)
3813 return ssl_protocol_to_string(s
->version
);
3816 static int dup_ca_names(STACK_OF(X509_NAME
) **dst
, STACK_OF(X509_NAME
) *src
)
3818 STACK_OF(X509_NAME
) *sk
;
3827 if ((sk
= sk_X509_NAME_new_null()) == NULL
)
3829 for (i
= 0; i
< sk_X509_NAME_num(src
); i
++) {
3830 xn
= X509_NAME_dup(sk_X509_NAME_value(src
, i
));
3832 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3835 if (sk_X509_NAME_insert(sk
, xn
, i
) == 0) {
3837 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3846 SSL
*SSL_dup(SSL
*s
)
3851 /* If we're not quiescent, just up_ref! */
3852 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3853 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3858 * Otherwise, copy configuration state, and session if set.
3860 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3863 if (s
->session
!= NULL
) {
3865 * Arranges to share the same session via up_ref. This "copies"
3866 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3868 if (!SSL_copy_session_id(ret
, s
))
3872 * No session has been established yet, so we have to expect that
3873 * s->cert or ret->cert will be changed later -- they should not both
3874 * point to the same object, and thus we can't use
3875 * SSL_copy_session_id.
3877 if (!SSL_set_ssl_method(ret
, s
->method
))
3880 if (s
->cert
!= NULL
) {
3881 ssl_cert_free(ret
->cert
);
3882 ret
->cert
= ssl_cert_dup(s
->cert
);
3883 if (ret
->cert
== NULL
)
3887 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3888 (int)s
->sid_ctx_length
))
3892 if (!ssl_dane_dup(ret
, s
))
3894 ret
->version
= s
->version
;
3895 ret
->options
= s
->options
;
3896 ret
->mode
= s
->mode
;
3897 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3898 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3899 ret
->msg_callback
= s
->msg_callback
;
3900 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3901 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3902 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3903 ret
->generate_session_id
= s
->generate_session_id
;
3905 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3907 /* copy app data, a little dangerous perhaps */
3908 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3911 /* setup rbio, and wbio */
3912 if (s
->rbio
!= NULL
) {
3913 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3916 if (s
->wbio
!= NULL
) {
3917 if (s
->wbio
!= s
->rbio
) {
3918 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3921 BIO_up_ref(ret
->rbio
);
3922 ret
->wbio
= ret
->rbio
;
3926 ret
->server
= s
->server
;
3927 if (s
->handshake_func
) {
3929 SSL_set_accept_state(ret
);
3931 SSL_set_connect_state(ret
);
3933 ret
->shutdown
= s
->shutdown
;
3936 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3937 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3939 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3941 /* dup the cipher_list and cipher_list_by_id stacks */
3942 if (s
->cipher_list
!= NULL
) {
3943 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3946 if (s
->cipher_list_by_id
!= NULL
)
3947 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3951 /* Dup the client_CA list */
3952 if (!dup_ca_names(&ret
->ca_names
, s
->ca_names
)
3953 || !dup_ca_names(&ret
->client_ca_names
, s
->client_ca_names
))
3963 void ssl_clear_cipher_ctx(SSL
*s
)
3965 if (s
->enc_read_ctx
!= NULL
) {
3966 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3967 s
->enc_read_ctx
= NULL
;
3969 if (s
->enc_write_ctx
!= NULL
) {
3970 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3971 s
->enc_write_ctx
= NULL
;
3973 #ifndef OPENSSL_NO_COMP
3974 COMP_CTX_free(s
->expand
);
3976 COMP_CTX_free(s
->compress
);
3981 X509
*SSL_get_certificate(const SSL
*s
)
3983 if (s
->cert
!= NULL
)
3984 return s
->cert
->key
->x509
;
3989 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3991 if (s
->cert
!= NULL
)
3992 return s
->cert
->key
->privatekey
;
3997 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3999 if (ctx
->cert
!= NULL
)
4000 return ctx
->cert
->key
->x509
;
4005 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
4007 if (ctx
->cert
!= NULL
)
4008 return ctx
->cert
->key
->privatekey
;
4013 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
4015 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
4016 return s
->session
->cipher
;
4020 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
4022 return s
->s3
.tmp
.new_cipher
;
4025 const COMP_METHOD
*SSL_get_current_compression(const SSL
*s
)
4027 #ifndef OPENSSL_NO_COMP
4028 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
4034 const COMP_METHOD
*SSL_get_current_expansion(const SSL
*s
)
4036 #ifndef OPENSSL_NO_COMP
4037 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
4043 int ssl_init_wbio_buffer(SSL
*s
)
4047 if (s
->bbio
!= NULL
) {
4048 /* Already buffered. */
4052 bbio
= BIO_new(BIO_f_buffer());
4053 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
4055 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
4059 s
->wbio
= BIO_push(bbio
, s
->wbio
);
4064 int ssl_free_wbio_buffer(SSL
*s
)
4066 /* callers ensure s is never null */
4067 if (s
->bbio
== NULL
)
4070 s
->wbio
= BIO_pop(s
->wbio
);
4077 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
4079 ctx
->quiet_shutdown
= mode
;
4082 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
4084 return ctx
->quiet_shutdown
;
4087 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
4089 s
->quiet_shutdown
= mode
;
4092 int SSL_get_quiet_shutdown(const SSL
*s
)
4094 return s
->quiet_shutdown
;
4097 void SSL_set_shutdown(SSL
*s
, int mode
)
4102 int SSL_get_shutdown(const SSL
*s
)
4107 int SSL_version(const SSL
*s
)
4112 int SSL_client_version(const SSL
*s
)
4114 return s
->client_version
;
4117 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
4122 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
4125 if (ssl
->ctx
== ctx
)
4128 ctx
= ssl
->session_ctx
;
4129 new_cert
= ssl_cert_dup(ctx
->cert
);
4130 if (new_cert
== NULL
) {
4134 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
4135 ssl_cert_free(new_cert
);
4139 ssl_cert_free(ssl
->cert
);
4140 ssl
->cert
= new_cert
;
4143 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4144 * so setter APIs must prevent invalid lengths from entering the system.
4146 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
4150 * If the session ID context matches that of the parent SSL_CTX,
4151 * inherit it from the new SSL_CTX as well. If however the context does
4152 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4153 * leave it unchanged.
4155 if ((ssl
->ctx
!= NULL
) &&
4156 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
4157 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
4158 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
4159 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
4162 SSL_CTX_up_ref(ctx
);
4163 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
4169 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
4171 return X509_STORE_set_default_paths(ctx
->cert_store
);
4174 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
4176 X509_LOOKUP
*lookup
;
4178 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
4181 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4183 /* Clear any errors if the default directory does not exist */
4189 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
4191 X509_LOOKUP
*lookup
;
4193 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
4197 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4199 /* Clear any errors if the default file does not exist */
4205 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
4208 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
4211 void SSL_set_info_callback(SSL
*ssl
,
4212 void (*cb
) (const SSL
*ssl
, int type
, int val
))
4214 ssl
->info_callback
= cb
;
4218 * One compiler (Diab DCC) doesn't like argument names in returned function
4221 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
4224 return ssl
->info_callback
;
4227 void SSL_set_verify_result(SSL
*ssl
, long arg
)
4229 ssl
->verify_result
= arg
;
4232 long SSL_get_verify_result(const SSL
*ssl
)
4234 return ssl
->verify_result
;
4237 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4240 return sizeof(ssl
->s3
.client_random
);
4241 if (outlen
> sizeof(ssl
->s3
.client_random
))
4242 outlen
= sizeof(ssl
->s3
.client_random
);
4243 memcpy(out
, ssl
->s3
.client_random
, outlen
);
4247 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4250 return sizeof(ssl
->s3
.server_random
);
4251 if (outlen
> sizeof(ssl
->s3
.server_random
))
4252 outlen
= sizeof(ssl
->s3
.server_random
);
4253 memcpy(out
, ssl
->s3
.server_random
, outlen
);
4257 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
4258 unsigned char *out
, size_t outlen
)
4261 return session
->master_key_length
;
4262 if (outlen
> session
->master_key_length
)
4263 outlen
= session
->master_key_length
;
4264 memcpy(out
, session
->master_key
, outlen
);
4268 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
4271 if (len
> sizeof(sess
->master_key
))
4274 memcpy(sess
->master_key
, in
, len
);
4275 sess
->master_key_length
= len
;
4280 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4282 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4285 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4287 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4290 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4292 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4295 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4297 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4300 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4302 return ctx
->cert_store
;
4305 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4307 X509_STORE_free(ctx
->cert_store
);
4308 ctx
->cert_store
= store
;
4311 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4314 X509_STORE_up_ref(store
);
4315 SSL_CTX_set_cert_store(ctx
, store
);
4318 int SSL_want(const SSL
*s
)
4324 * \brief Set the callback for generating temporary DH keys.
4325 * \param ctx the SSL context.
4326 * \param dh the callback
4329 #ifndef OPENSSL_NO_DH
4330 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4331 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4334 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4337 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4340 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4344 #ifndef OPENSSL_NO_PSK
4345 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4347 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4348 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4351 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4352 if (identity_hint
!= NULL
) {
4353 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4354 if (ctx
->cert
->psk_identity_hint
== NULL
)
4357 ctx
->cert
->psk_identity_hint
= NULL
;
4361 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4366 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4367 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4370 OPENSSL_free(s
->cert
->psk_identity_hint
);
4371 if (identity_hint
!= NULL
) {
4372 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4373 if (s
->cert
->psk_identity_hint
== NULL
)
4376 s
->cert
->psk_identity_hint
= NULL
;
4380 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4382 if (s
== NULL
|| s
->session
== NULL
)
4384 return s
->session
->psk_identity_hint
;
4387 const char *SSL_get_psk_identity(const SSL
*s
)
4389 if (s
== NULL
|| s
->session
== NULL
)
4391 return s
->session
->psk_identity
;
4394 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4396 s
->psk_client_callback
= cb
;
4399 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4401 ctx
->psk_client_callback
= cb
;
4404 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4406 s
->psk_server_callback
= cb
;
4409 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4411 ctx
->psk_server_callback
= cb
;
4415 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4417 s
->psk_find_session_cb
= cb
;
4420 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4421 SSL_psk_find_session_cb_func cb
)
4423 ctx
->psk_find_session_cb
= cb
;
4426 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4428 s
->psk_use_session_cb
= cb
;
4431 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4432 SSL_psk_use_session_cb_func cb
)
4434 ctx
->psk_use_session_cb
= cb
;
4437 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4438 void (*cb
) (int write_p
, int version
,
4439 int content_type
, const void *buf
,
4440 size_t len
, SSL
*ssl
, void *arg
))
4442 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4445 void SSL_set_msg_callback(SSL
*ssl
,
4446 void (*cb
) (int write_p
, int version
,
4447 int content_type
, const void *buf
,
4448 size_t len
, SSL
*ssl
, void *arg
))
4450 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4453 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4454 int (*cb
) (SSL
*ssl
,
4458 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4459 (void (*)(void))cb
);
4462 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4463 int (*cb
) (SSL
*ssl
,
4464 int is_forward_secure
))
4466 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4467 (void (*)(void))cb
);
4470 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4471 size_t (*cb
) (SSL
*ssl
, int type
,
4472 size_t len
, void *arg
))
4474 ctx
->record_padding_cb
= cb
;
4477 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4479 ctx
->record_padding_arg
= arg
;
4482 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX
*ctx
)
4484 return ctx
->record_padding_arg
;
4487 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4489 /* block size of 0 or 1 is basically no padding */
4490 if (block_size
== 1)
4491 ctx
->block_padding
= 0;
4492 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4493 ctx
->block_padding
= block_size
;
4499 void SSL_set_record_padding_callback(SSL
*ssl
,
4500 size_t (*cb
) (SSL
*ssl
, int type
,
4501 size_t len
, void *arg
))
4503 ssl
->record_padding_cb
= cb
;
4506 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4508 ssl
->record_padding_arg
= arg
;
4511 void *SSL_get_record_padding_callback_arg(const SSL
*ssl
)
4513 return ssl
->record_padding_arg
;
4516 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4518 /* block size of 0 or 1 is basically no padding */
4519 if (block_size
== 1)
4520 ssl
->block_padding
= 0;
4521 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4522 ssl
->block_padding
= block_size
;
4528 int SSL_set_num_tickets(SSL
*s
, size_t num_tickets
)
4530 s
->num_tickets
= num_tickets
;
4535 size_t SSL_get_num_tickets(const SSL
*s
)
4537 return s
->num_tickets
;
4540 int SSL_CTX_set_num_tickets(SSL_CTX
*ctx
, size_t num_tickets
)
4542 ctx
->num_tickets
= num_tickets
;
4547 size_t SSL_CTX_get_num_tickets(const SSL_CTX
*ctx
)
4549 return ctx
->num_tickets
;
4553 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4554 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4555 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4556 * Returns the newly allocated ctx;
4559 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4561 ssl_clear_hash_ctx(hash
);
4562 *hash
= EVP_MD_CTX_new();
4563 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4564 EVP_MD_CTX_free(*hash
);
4571 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4574 EVP_MD_CTX_free(*hash
);
4578 /* Retrieve handshake hashes */
4579 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4582 EVP_MD_CTX
*ctx
= NULL
;
4583 EVP_MD_CTX
*hdgst
= s
->s3
.handshake_dgst
;
4584 int hashleni
= EVP_MD_CTX_size(hdgst
);
4587 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4588 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4589 ERR_R_INTERNAL_ERROR
);
4593 ctx
= EVP_MD_CTX_new();
4597 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4598 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4599 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4600 ERR_R_INTERNAL_ERROR
);
4604 *hashlen
= hashleni
;
4608 EVP_MD_CTX_free(ctx
);
4612 int SSL_session_reused(const SSL
*s
)
4617 int SSL_is_server(const SSL
*s
)
4622 #if !OPENSSL_API_1_1_0
4623 void SSL_set_debug(SSL
*s
, int debug
)
4625 /* Old function was do-nothing anyway... */
4631 void SSL_set_security_level(SSL
*s
, int level
)
4633 s
->cert
->sec_level
= level
;
4636 int SSL_get_security_level(const SSL
*s
)
4638 return s
->cert
->sec_level
;
4641 void SSL_set_security_callback(SSL
*s
,
4642 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4643 int op
, int bits
, int nid
,
4644 void *other
, void *ex
))
4646 s
->cert
->sec_cb
= cb
;
4649 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4650 const SSL_CTX
*ctx
, int op
,
4651 int bits
, int nid
, void *other
,
4653 return s
->cert
->sec_cb
;
4656 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4658 s
->cert
->sec_ex
= ex
;
4661 void *SSL_get0_security_ex_data(const SSL
*s
)
4663 return s
->cert
->sec_ex
;
4666 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4668 ctx
->cert
->sec_level
= level
;
4671 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4673 return ctx
->cert
->sec_level
;
4676 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4677 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4678 int op
, int bits
, int nid
,
4679 void *other
, void *ex
))
4681 ctx
->cert
->sec_cb
= cb
;
4684 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4690 return ctx
->cert
->sec_cb
;
4693 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4695 ctx
->cert
->sec_ex
= ex
;
4698 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4700 return ctx
->cert
->sec_ex
;
4704 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4705 * can return unsigned long, instead of the generic long return value from the
4706 * control interface.
4708 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4710 return ctx
->options
;
4713 unsigned long SSL_get_options(const SSL
*s
)
4718 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4720 return ctx
->options
|= op
;
4723 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4725 return s
->options
|= op
;
4728 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4730 return ctx
->options
&= ~op
;
4733 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4735 return s
->options
&= ~op
;
4738 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4740 return s
->verified_chain
;
4743 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4745 #ifndef OPENSSL_NO_CT
4748 * Moves SCTs from the |src| stack to the |dst| stack.
4749 * The source of each SCT will be set to |origin|.
4750 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4752 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4754 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4755 sct_source_t origin
)
4761 *dst
= sk_SCT_new_null();
4763 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4768 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4769 if (SCT_set_source(sct
, origin
) != 1)
4772 if (sk_SCT_push(*dst
, sct
) <= 0)
4780 sk_SCT_push(src
, sct
); /* Put the SCT back */
4785 * Look for data collected during ServerHello and parse if found.
4786 * Returns the number of SCTs extracted.
4788 static int ct_extract_tls_extension_scts(SSL
*s
)
4790 int scts_extracted
= 0;
4792 if (s
->ext
.scts
!= NULL
) {
4793 const unsigned char *p
= s
->ext
.scts
;
4794 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4796 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4798 SCT_LIST_free(scts
);
4801 return scts_extracted
;
4805 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4806 * contains an SCT X509 extension. They will be stored in |s->scts|.
4808 * - The number of SCTs extracted, assuming an OCSP response exists.
4809 * - 0 if no OCSP response exists or it contains no SCTs.
4810 * - A negative integer if an error occurs.
4812 static int ct_extract_ocsp_response_scts(SSL
*s
)
4814 # ifndef OPENSSL_NO_OCSP
4815 int scts_extracted
= 0;
4816 const unsigned char *p
;
4817 OCSP_BASICRESP
*br
= NULL
;
4818 OCSP_RESPONSE
*rsp
= NULL
;
4819 STACK_OF(SCT
) *scts
= NULL
;
4822 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4825 p
= s
->ext
.ocsp
.resp
;
4826 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4830 br
= OCSP_response_get1_basic(rsp
);
4834 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4835 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4841 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4843 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4844 if (scts_extracted
< 0)
4848 SCT_LIST_free(scts
);
4849 OCSP_BASICRESP_free(br
);
4850 OCSP_RESPONSE_free(rsp
);
4851 return scts_extracted
;
4853 /* Behave as if no OCSP response exists */
4859 * Attempts to extract SCTs from the peer certificate.
4860 * Return the number of SCTs extracted, or a negative integer if an error
4863 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4865 int scts_extracted
= 0;
4866 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4869 STACK_OF(SCT
) *scts
=
4870 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4873 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4875 SCT_LIST_free(scts
);
4878 return scts_extracted
;
4882 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4883 * response (if it exists) and X509v3 extensions in the certificate.
4884 * Returns NULL if an error occurs.
4886 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4888 if (!s
->scts_parsed
) {
4889 if (ct_extract_tls_extension_scts(s
) < 0 ||
4890 ct_extract_ocsp_response_scts(s
) < 0 ||
4891 ct_extract_x509v3_extension_scts(s
) < 0)
4901 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4902 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4907 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4908 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4910 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4913 for (i
= 0; i
< count
; ++i
) {
4914 SCT
*sct
= sk_SCT_value(scts
, i
);
4915 int status
= SCT_get_validation_status(sct
);
4917 if (status
== SCT_VALIDATION_STATUS_VALID
)
4920 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4924 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4928 * Since code exists that uses the custom extension handler for CT, look
4929 * for this and throw an error if they have already registered to use CT.
4931 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4932 TLSEXT_TYPE_signed_certificate_timestamp
))
4934 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4935 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4939 if (callback
!= NULL
) {
4941 * If we are validating CT, then we MUST accept SCTs served via OCSP
4943 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4947 s
->ct_validation_callback
= callback
;
4948 s
->ct_validation_callback_arg
= arg
;
4953 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4954 ssl_ct_validation_cb callback
, void *arg
)
4957 * Since code exists that uses the custom extension handler for CT, look for
4958 * this and throw an error if they have already registered to use CT.
4960 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4961 TLSEXT_TYPE_signed_certificate_timestamp
))
4963 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4964 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4968 ctx
->ct_validation_callback
= callback
;
4969 ctx
->ct_validation_callback_arg
= arg
;
4973 int SSL_ct_is_enabled(const SSL
*s
)
4975 return s
->ct_validation_callback
!= NULL
;
4978 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4980 return ctx
->ct_validation_callback
!= NULL
;
4983 int ssl_validate_ct(SSL
*s
)
4986 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4988 SSL_DANE
*dane
= &s
->dane
;
4989 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4990 const STACK_OF(SCT
) *scts
;
4993 * If no callback is set, the peer is anonymous, or its chain is invalid,
4994 * skip SCT validation - just return success. Applications that continue
4995 * handshakes without certificates, with unverified chains, or pinned leaf
4996 * certificates are outside the scope of the WebPKI and CT.
4998 * The above exclusions notwithstanding the vast majority of peers will
4999 * have rather ordinary certificate chains validated by typical
5000 * applications that perform certificate verification and therefore will
5001 * process SCTs when enabled.
5003 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
5004 s
->verify_result
!= X509_V_OK
||
5005 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
5009 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5010 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5012 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
5013 switch (dane
->mtlsa
->usage
) {
5014 case DANETLS_USAGE_DANE_TA
:
5015 case DANETLS_USAGE_DANE_EE
:
5020 ctx
= CT_POLICY_EVAL_CTX_new();
5022 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
5023 ERR_R_MALLOC_FAILURE
);
5027 issuer
= sk_X509_value(s
->verified_chain
, 1);
5028 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
5029 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
5030 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
5031 CT_POLICY_EVAL_CTX_set_time(
5032 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
5034 scts
= SSL_get0_peer_scts(s
);
5037 * This function returns success (> 0) only when all the SCTs are valid, 0
5038 * when some are invalid, and < 0 on various internal errors (out of
5039 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5040 * reason to abort the handshake, that decision is up to the callback.
5041 * Therefore, we error out only in the unexpected case that the return
5042 * value is negative.
5044 * XXX: One might well argue that the return value of this function is an
5045 * unfortunate design choice. Its job is only to determine the validation
5046 * status of each of the provided SCTs. So long as it correctly separates
5047 * the wheat from the chaff it should return success. Failure in this case
5048 * ought to correspond to an inability to carry out its duties.
5050 if (SCT_LIST_validate(scts
, ctx
) < 0) {
5051 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5052 SSL_R_SCT_VERIFICATION_FAILED
);
5056 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
5058 ret
= 0; /* This function returns 0 on failure */
5060 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5061 SSL_R_CALLBACK_FAILED
);
5064 CT_POLICY_EVAL_CTX_free(ctx
);
5066 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5067 * failure return code here. Also the application may wish the complete
5068 * the handshake, and then disconnect cleanly at a higher layer, after
5069 * checking the verification status of the completed connection.
5071 * We therefore force a certificate verification failure which will be
5072 * visible via SSL_get_verify_result() and cached as part of any resumed
5075 * Note: the permissive callback is for information gathering only, always
5076 * returns success, and does not affect verification status. Only the
5077 * strict callback or a custom application-specified callback can trigger
5078 * connection failure or record a verification error.
5081 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
5085 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
5087 switch (validation_mode
) {
5089 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5091 case SSL_CT_VALIDATION_PERMISSIVE
:
5092 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
5093 case SSL_CT_VALIDATION_STRICT
:
5094 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
5098 int SSL_enable_ct(SSL
*s
, int validation_mode
)
5100 switch (validation_mode
) {
5102 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5104 case SSL_CT_VALIDATION_PERMISSIVE
:
5105 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
5106 case SSL_CT_VALIDATION_STRICT
:
5107 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
5111 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
5113 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
5116 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
5118 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
5121 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
5123 CTLOG_STORE_free(ctx
->ctlog_store
);
5124 ctx
->ctlog_store
= logs
;
5127 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
5129 return ctx
->ctlog_store
;
5132 #endif /* OPENSSL_NO_CT */
5134 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
5137 c
->client_hello_cb
= cb
;
5138 c
->client_hello_cb_arg
= arg
;
5141 int SSL_client_hello_isv2(SSL
*s
)
5143 if (s
->clienthello
== NULL
)
5145 return s
->clienthello
->isv2
;
5148 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
5150 if (s
->clienthello
== NULL
)
5152 return s
->clienthello
->legacy_version
;
5155 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
5157 if (s
->clienthello
== NULL
)
5160 *out
= s
->clienthello
->random
;
5161 return SSL3_RANDOM_SIZE
;
5164 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
5166 if (s
->clienthello
== NULL
)
5169 *out
= s
->clienthello
->session_id
;
5170 return s
->clienthello
->session_id_len
;
5173 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
5175 if (s
->clienthello
== NULL
)
5178 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
5179 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
5182 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
5184 if (s
->clienthello
== NULL
)
5187 *out
= s
->clienthello
->compressions
;
5188 return s
->clienthello
->compressions_len
;
5191 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
5197 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
5199 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5200 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5209 if ((present
= OPENSSL_malloc(sizeof(*present
) * num
)) == NULL
) {
5210 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT
,
5211 ERR_R_MALLOC_FAILURE
);
5214 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5215 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5217 if (ext
->received_order
>= num
)
5219 present
[ext
->received_order
] = ext
->type
;
5226 OPENSSL_free(present
);
5230 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
5236 if (s
->clienthello
== NULL
)
5238 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
5239 r
= s
->clienthello
->pre_proc_exts
+ i
;
5240 if (r
->present
&& r
->type
== type
) {
5242 *out
= PACKET_data(&r
->data
);
5244 *outlen
= PACKET_remaining(&r
->data
);
5251 int SSL_free_buffers(SSL
*ssl
)
5253 RECORD_LAYER
*rl
= &ssl
->rlayer
;
5255 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
5258 RECORD_LAYER_release(rl
);
5262 int SSL_alloc_buffers(SSL
*ssl
)
5264 return ssl3_setup_buffers(ssl
);
5267 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
5269 ctx
->keylog_callback
= cb
;
5272 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
5274 return ctx
->keylog_callback
;
5277 static int nss_keylog_int(const char *prefix
,
5279 const uint8_t *parameter_1
,
5280 size_t parameter_1_len
,
5281 const uint8_t *parameter_2
,
5282 size_t parameter_2_len
)
5285 char *cursor
= NULL
;
5290 if (ssl
->ctx
->keylog_callback
== NULL
)
5294 * Our output buffer will contain the following strings, rendered with
5295 * space characters in between, terminated by a NULL character: first the
5296 * prefix, then the first parameter, then the second parameter. The
5297 * meaning of each parameter depends on the specific key material being
5298 * logged. Note that the first and second parameters are encoded in
5299 * hexadecimal, so we need a buffer that is twice their lengths.
5301 prefix_len
= strlen(prefix
);
5302 out_len
= prefix_len
+ (2 * parameter_1_len
) + (2 * parameter_2_len
) + 3;
5303 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
5304 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
5305 ERR_R_MALLOC_FAILURE
);
5309 strcpy(cursor
, prefix
);
5310 cursor
+= prefix_len
;
5313 for (i
= 0; i
< parameter_1_len
; i
++) {
5314 sprintf(cursor
, "%02x", parameter_1
[i
]);
5319 for (i
= 0; i
< parameter_2_len
; i
++) {
5320 sprintf(cursor
, "%02x", parameter_2
[i
]);
5325 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5326 OPENSSL_clear_free(out
, out_len
);
5331 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5332 const uint8_t *encrypted_premaster
,
5333 size_t encrypted_premaster_len
,
5334 const uint8_t *premaster
,
5335 size_t premaster_len
)
5337 if (encrypted_premaster_len
< 8) {
5338 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5339 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5343 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5344 return nss_keylog_int("RSA",
5346 encrypted_premaster
,
5352 int ssl_log_secret(SSL
*ssl
,
5354 const uint8_t *secret
,
5357 return nss_keylog_int(label
,
5359 ssl
->s3
.client_random
,
5365 #define SSLV2_CIPHER_LEN 3
5367 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5371 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5373 if (PACKET_remaining(cipher_suites
) == 0) {
5374 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5375 SSL_R_NO_CIPHERS_SPECIFIED
);
5379 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5380 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5381 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5385 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5386 s
->s3
.tmp
.ciphers_raw
= NULL
;
5387 s
->s3
.tmp
.ciphers_rawlen
= 0;
5390 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5391 PACKET sslv2ciphers
= *cipher_suites
;
5392 unsigned int leadbyte
;
5396 * We store the raw ciphers list in SSLv3+ format so we need to do some
5397 * preprocessing to convert the list first. If there are any SSLv2 only
5398 * ciphersuites with a non-zero leading byte then we are going to
5399 * slightly over allocate because we won't store those. But that isn't a
5402 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5403 s
->s3
.tmp
.ciphers_raw
= raw
;
5405 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5406 ERR_R_MALLOC_FAILURE
);
5409 for (s
->s3
.tmp
.ciphers_rawlen
= 0;
5410 PACKET_remaining(&sslv2ciphers
) > 0;
5411 raw
+= TLS_CIPHER_LEN
) {
5412 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5414 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5417 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5418 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5420 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5421 s
->s3
.tmp
.ciphers_raw
= NULL
;
5422 s
->s3
.tmp
.ciphers_rawlen
= 0;
5426 s
->s3
.tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5428 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
.tmp
.ciphers_raw
,
5429 &s
->s3
.tmp
.ciphers_rawlen
)) {
5430 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5431 ERR_R_INTERNAL_ERROR
);
5437 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5438 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5439 STACK_OF(SSL_CIPHER
) **scsvs
)
5443 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5445 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5448 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5449 STACK_OF(SSL_CIPHER
) **skp
,
5450 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5451 int sslv2format
, int fatal
)
5453 const SSL_CIPHER
*c
;
5454 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5455 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5457 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5458 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5460 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5462 if (PACKET_remaining(cipher_suites
) == 0) {
5464 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5465 SSL_R_NO_CIPHERS_SPECIFIED
);
5467 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5471 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5473 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5474 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5476 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5477 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5481 sk
= sk_SSL_CIPHER_new_null();
5482 scsvs
= sk_SSL_CIPHER_new_null();
5483 if (sk
== NULL
|| scsvs
== NULL
) {
5485 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5486 ERR_R_MALLOC_FAILURE
);
5488 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5492 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5494 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5495 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5496 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5498 if (sslv2format
&& cipher
[0] != '\0')
5501 /* For SSLv2-compat, ignore leading 0-byte. */
5502 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5504 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5505 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5507 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5508 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5510 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5515 if (PACKET_remaining(cipher_suites
) > 0) {
5517 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5520 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5527 sk_SSL_CIPHER_free(sk
);
5528 if (scsvs_out
!= NULL
)
5531 sk_SSL_CIPHER_free(scsvs
);
5534 sk_SSL_CIPHER_free(sk
);
5535 sk_SSL_CIPHER_free(scsvs
);
5539 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5541 ctx
->max_early_data
= max_early_data
;
5546 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5548 return ctx
->max_early_data
;
5551 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5553 s
->max_early_data
= max_early_data
;
5558 uint32_t SSL_get_max_early_data(const SSL
*s
)
5560 return s
->max_early_data
;
5563 int SSL_CTX_set_recv_max_early_data(SSL_CTX
*ctx
, uint32_t recv_max_early_data
)
5565 ctx
->recv_max_early_data
= recv_max_early_data
;
5570 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX
*ctx
)
5572 return ctx
->recv_max_early_data
;
5575 int SSL_set_recv_max_early_data(SSL
*s
, uint32_t recv_max_early_data
)
5577 s
->recv_max_early_data
= recv_max_early_data
;
5582 uint32_t SSL_get_recv_max_early_data(const SSL
*s
)
5584 return s
->recv_max_early_data
;
5587 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5589 /* Return any active Max Fragment Len extension */
5590 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5591 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5593 /* return current SSL connection setting */
5594 return ssl
->max_send_fragment
;
5597 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5599 /* Return a value regarding an active Max Fragment Len extension */
5600 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5601 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5602 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5604 /* else limit |split_send_fragment| to current |max_send_fragment| */
5605 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5606 return ssl
->max_send_fragment
;
5608 /* return current SSL connection setting */
5609 return ssl
->split_send_fragment
;
5612 int SSL_stateless(SSL
*s
)
5616 /* Ensure there is no state left over from a previous invocation */
5622 s
->s3
.flags
|= TLS1_FLAGS_STATELESS
;
5623 ret
= SSL_accept(s
);
5624 s
->s3
.flags
&= ~TLS1_FLAGS_STATELESS
;
5626 if (ret
> 0 && s
->ext
.cookieok
)
5629 if (s
->hello_retry_request
== SSL_HRR_PENDING
&& !ossl_statem_in_error(s
))
5635 void SSL_CTX_set_post_handshake_auth(SSL_CTX
*ctx
, int val
)
5637 ctx
->pha_enabled
= val
;
5640 void SSL_set_post_handshake_auth(SSL
*ssl
, int val
)
5642 ssl
->pha_enabled
= val
;
5645 int SSL_verify_client_post_handshake(SSL
*ssl
)
5647 if (!SSL_IS_TLS13(ssl
)) {
5648 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_WRONG_SSL_VERSION
);
5652 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_NOT_SERVER
);
5656 if (!SSL_is_init_finished(ssl
)) {
5657 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_STILL_IN_INIT
);
5661 switch (ssl
->post_handshake_auth
) {
5663 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_EXTENSION_NOT_RECEIVED
);
5666 case SSL_PHA_EXT_SENT
:
5667 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, ERR_R_INTERNAL_ERROR
);
5669 case SSL_PHA_EXT_RECEIVED
:
5671 case SSL_PHA_REQUEST_PENDING
:
5672 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_PENDING
);
5674 case SSL_PHA_REQUESTED
:
5675 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_SENT
);
5679 ssl
->post_handshake_auth
= SSL_PHA_REQUEST_PENDING
;
5681 /* checks verify_mode and algorithm_auth */
5682 if (!send_certificate_request(ssl
)) {
5683 ssl
->post_handshake_auth
= SSL_PHA_EXT_RECEIVED
; /* restore on error */
5684 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_INVALID_CONFIG
);
5688 ossl_statem_set_in_init(ssl
, 1);
5692 int SSL_CTX_set_session_ticket_cb(SSL_CTX
*ctx
,
5693 SSL_CTX_generate_session_ticket_fn gen_cb
,
5694 SSL_CTX_decrypt_session_ticket_fn dec_cb
,
5697 ctx
->generate_ticket_cb
= gen_cb
;
5698 ctx
->decrypt_ticket_cb
= dec_cb
;
5699 ctx
->ticket_cb_data
= arg
;
5703 void SSL_CTX_set_allow_early_data_cb(SSL_CTX
*ctx
,
5704 SSL_allow_early_data_cb_fn cb
,
5707 ctx
->allow_early_data_cb
= cb
;
5708 ctx
->allow_early_data_cb_data
= arg
;
5711 void SSL_set_allow_early_data_cb(SSL
*s
,
5712 SSL_allow_early_data_cb_fn cb
,
5715 s
->allow_early_data_cb
= cb
;
5716 s
->allow_early_data_cb_data
= arg
;