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
;
783 if (ctx
->ext
.supportedgroups
) {
784 s
->ext
.supportedgroups
=
785 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
786 ctx
->ext
.supportedgroups_len
787 * sizeof(*ctx
->ext
.supportedgroups
));
788 if (!s
->ext
.supportedgroups
)
790 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
793 #ifndef OPENSSL_NO_NEXTPROTONEG
797 if (s
->ctx
->ext
.alpn
) {
798 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
799 if (s
->ext
.alpn
== NULL
)
801 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
802 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
805 s
->verified_chain
= NULL
;
806 s
->verify_result
= X509_V_OK
;
808 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
809 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
811 s
->method
= ctx
->method
;
813 s
->key_update
= SSL_KEY_UPDATE_NONE
;
815 s
->allow_early_data_cb
= ctx
->allow_early_data_cb
;
816 s
->allow_early_data_cb_data
= ctx
->allow_early_data_cb_data
;
818 if (!s
->method
->ssl_new(s
))
821 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
826 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
829 #ifndef OPENSSL_NO_PSK
830 s
->psk_client_callback
= ctx
->psk_client_callback
;
831 s
->psk_server_callback
= ctx
->psk_server_callback
;
833 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
834 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
836 s
->async_cb
= ctx
->async_cb
;
837 s
->async_cb_arg
= ctx
->async_cb_arg
;
841 #ifndef OPENSSL_NO_CT
842 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
843 ctx
->ct_validation_callback_arg
))
850 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
854 int SSL_is_dtls(const SSL
*s
)
856 return SSL_IS_DTLS(s
) ? 1 : 0;
859 int SSL_up_ref(SSL
*s
)
863 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
866 REF_PRINT_COUNT("SSL", s
);
867 REF_ASSERT_ISNT(i
< 2);
868 return ((i
> 1) ? 1 : 0);
871 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
872 unsigned int sid_ctx_len
)
874 if (sid_ctx_len
> sizeof(ctx
->sid_ctx
)) {
875 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
876 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
879 ctx
->sid_ctx_length
= sid_ctx_len
;
880 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
885 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
886 unsigned int sid_ctx_len
)
888 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
889 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
890 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
893 ssl
->sid_ctx_length
= sid_ctx_len
;
894 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
899 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
901 CRYPTO_THREAD_write_lock(ctx
->lock
);
902 ctx
->generate_session_id
= cb
;
903 CRYPTO_THREAD_unlock(ctx
->lock
);
907 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
909 CRYPTO_THREAD_write_lock(ssl
->lock
);
910 ssl
->generate_session_id
= cb
;
911 CRYPTO_THREAD_unlock(ssl
->lock
);
915 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
919 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
920 * we can "construct" a session to give us the desired check - i.e. to
921 * find if there's a session in the hash table that would conflict with
922 * any new session built out of this id/id_len and the ssl_version in use
927 if (id_len
> sizeof(r
.session_id
))
930 r
.ssl_version
= ssl
->version
;
931 r
.session_id_length
= id_len
;
932 memcpy(r
.session_id
, id
, id_len
);
934 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
935 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
936 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
940 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
942 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
945 int SSL_set_purpose(SSL
*s
, int purpose
)
947 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
950 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
952 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
955 int SSL_set_trust(SSL
*s
, int trust
)
957 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
960 int SSL_set1_host(SSL
*s
, const char *hostname
)
962 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
965 int SSL_add1_host(SSL
*s
, const char *hostname
)
967 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
970 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
972 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
975 const char *SSL_get0_peername(SSL
*s
)
977 return X509_VERIFY_PARAM_get0_peername(s
->param
);
980 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
982 return dane_ctx_enable(&ctx
->dane
);
985 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
987 unsigned long orig
= ctx
->dane
.flags
;
989 ctx
->dane
.flags
|= flags
;
993 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
995 unsigned long orig
= ctx
->dane
.flags
;
997 ctx
->dane
.flags
&= ~flags
;
1001 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
1003 SSL_DANE
*dane
= &s
->dane
;
1005 if (s
->ctx
->dane
.mdmax
== 0) {
1006 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
1009 if (dane
->trecs
!= NULL
) {
1010 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
1015 * Default SNI name. This rejects empty names, while set1_host below
1016 * accepts them and disables host name checks. To avoid side-effects with
1017 * invalid input, set the SNI name first.
1019 if (s
->ext
.hostname
== NULL
) {
1020 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
1021 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1026 /* Primary RFC6125 reference identifier */
1027 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
1028 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
1034 dane
->dctx
= &s
->ctx
->dane
;
1035 dane
->trecs
= sk_danetls_record_new_null();
1037 if (dane
->trecs
== NULL
) {
1038 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
1044 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
1046 unsigned long orig
= ssl
->dane
.flags
;
1048 ssl
->dane
.flags
|= flags
;
1052 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
1054 unsigned long orig
= ssl
->dane
.flags
;
1056 ssl
->dane
.flags
&= ~flags
;
1060 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
1062 SSL_DANE
*dane
= &s
->dane
;
1064 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1068 *mcert
= dane
->mcert
;
1070 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1075 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1076 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1078 SSL_DANE
*dane
= &s
->dane
;
1080 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1084 *usage
= dane
->mtlsa
->usage
;
1086 *selector
= dane
->mtlsa
->selector
;
1088 *mtype
= dane
->mtlsa
->mtype
;
1090 *data
= dane
->mtlsa
->data
;
1092 *dlen
= dane
->mtlsa
->dlen
;
1097 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1102 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1103 uint8_t mtype
, unsigned const char *data
, size_t dlen
)
1105 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1108 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1111 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1114 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1116 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1119 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1121 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1124 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1129 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1134 void SSL_certs_clear(SSL
*s
)
1136 ssl_cert_clear_certs(s
->cert
);
1139 void SSL_free(SSL
*s
)
1145 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1146 REF_PRINT_COUNT("SSL", s
);
1149 REF_ASSERT_ISNT(i
< 0);
1151 X509_VERIFY_PARAM_free(s
->param
);
1152 dane_final(&s
->dane
);
1153 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1155 RECORD_LAYER_release(&s
->rlayer
);
1157 /* Ignore return value */
1158 ssl_free_wbio_buffer(s
);
1160 BIO_free_all(s
->wbio
);
1162 BIO_free_all(s
->rbio
);
1165 BUF_MEM_free(s
->init_buf
);
1167 /* add extra stuff */
1168 sk_SSL_CIPHER_free(s
->cipher_list
);
1169 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1170 sk_SSL_CIPHER_free(s
->tls13_ciphersuites
);
1172 /* Make the next call work :-) */
1173 if (s
->session
!= NULL
) {
1174 ssl_clear_bad_session(s
);
1175 SSL_SESSION_free(s
->session
);
1177 SSL_SESSION_free(s
->psksession
);
1178 OPENSSL_free(s
->psksession_id
);
1182 ssl_cert_free(s
->cert
);
1183 /* Free up if allocated */
1185 OPENSSL_free(s
->ext
.hostname
);
1186 SSL_CTX_free(s
->session_ctx
);
1187 #ifndef OPENSSL_NO_EC
1188 OPENSSL_free(s
->ext
.ecpointformats
);
1189 OPENSSL_free(s
->ext
.supportedgroups
);
1190 #endif /* OPENSSL_NO_EC */
1191 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1192 #ifndef OPENSSL_NO_OCSP
1193 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1195 #ifndef OPENSSL_NO_CT
1196 SCT_LIST_free(s
->scts
);
1197 OPENSSL_free(s
->ext
.scts
);
1199 OPENSSL_free(s
->ext
.ocsp
.resp
);
1200 OPENSSL_free(s
->ext
.alpn
);
1201 OPENSSL_free(s
->ext
.tls13_cookie
);
1202 OPENSSL_free(s
->clienthello
);
1203 OPENSSL_free(s
->pha_context
);
1204 EVP_MD_CTX_free(s
->pha_dgst
);
1206 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1207 sk_X509_NAME_pop_free(s
->client_ca_names
, X509_NAME_free
);
1209 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1211 if (s
->method
!= NULL
)
1212 s
->method
->ssl_free(s
);
1214 SSL_CTX_free(s
->ctx
);
1216 ASYNC_WAIT_CTX_free(s
->waitctx
);
1218 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1219 OPENSSL_free(s
->ext
.npn
);
1222 #ifndef OPENSSL_NO_SRTP
1223 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1226 CRYPTO_THREAD_lock_free(s
->lock
);
1231 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1233 BIO_free_all(s
->rbio
);
1237 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1240 * If the output buffering BIO is still in place, remove it
1242 if (s
->bbio
!= NULL
)
1243 s
->wbio
= BIO_pop(s
->wbio
);
1245 BIO_free_all(s
->wbio
);
1248 /* Re-attach |bbio| to the new |wbio|. */
1249 if (s
->bbio
!= NULL
)
1250 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1253 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1256 * For historical reasons, this function has many different cases in
1257 * ownership handling.
1260 /* If nothing has changed, do nothing */
1261 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1265 * If the two arguments are equal then one fewer reference is granted by the
1266 * caller than we want to take
1268 if (rbio
!= NULL
&& rbio
== wbio
)
1272 * If only the wbio is changed only adopt one reference.
1274 if (rbio
== SSL_get_rbio(s
)) {
1275 SSL_set0_wbio(s
, wbio
);
1279 * There is an asymmetry here for historical reasons. If only the rbio is
1280 * changed AND the rbio and wbio were originally different, then we only
1281 * adopt one reference.
1283 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1284 SSL_set0_rbio(s
, rbio
);
1288 /* Otherwise, adopt both references. */
1289 SSL_set0_rbio(s
, rbio
);
1290 SSL_set0_wbio(s
, wbio
);
1293 BIO
*SSL_get_rbio(const SSL
*s
)
1298 BIO
*SSL_get_wbio(const SSL
*s
)
1300 if (s
->bbio
!= NULL
) {
1302 * If |bbio| is active, the true caller-configured BIO is its
1305 return BIO_next(s
->bbio
);
1310 int SSL_get_fd(const SSL
*s
)
1312 return SSL_get_rfd(s
);
1315 int SSL_get_rfd(const SSL
*s
)
1320 b
= SSL_get_rbio(s
);
1321 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1323 BIO_get_fd(r
, &ret
);
1327 int SSL_get_wfd(const SSL
*s
)
1332 b
= SSL_get_wbio(s
);
1333 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1335 BIO_get_fd(r
, &ret
);
1339 #ifndef OPENSSL_NO_SOCK
1340 int SSL_set_fd(SSL
*s
, int fd
)
1345 bio
= BIO_new(BIO_s_socket());
1348 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1351 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1352 SSL_set_bio(s
, bio
, bio
);
1353 #ifndef OPENSSL_NO_KTLS
1355 * The new socket is created successfully regardless of ktls_enable.
1356 * ktls_enable doesn't change any functionality of the socket, except
1357 * changing the setsockopt to enable the processing of ktls_start.
1358 * Thus, it is not a problem to call it for non-TLS sockets.
1361 #endif /* OPENSSL_NO_KTLS */
1367 int SSL_set_wfd(SSL
*s
, int fd
)
1369 BIO
*rbio
= SSL_get_rbio(s
);
1371 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1372 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1373 BIO
*bio
= BIO_new(BIO_s_socket());
1376 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1379 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1380 SSL_set0_wbio(s
, bio
);
1381 #ifndef OPENSSL_NO_KTLS
1383 * The new socket is created successfully regardless of ktls_enable.
1384 * ktls_enable doesn't change any functionality of the socket, except
1385 * changing the setsockopt to enable the processing of ktls_start.
1386 * Thus, it is not a problem to call it for non-TLS sockets.
1389 #endif /* OPENSSL_NO_KTLS */
1392 SSL_set0_wbio(s
, rbio
);
1397 int SSL_set_rfd(SSL
*s
, int fd
)
1399 BIO
*wbio
= SSL_get_wbio(s
);
1401 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1402 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1403 BIO
*bio
= BIO_new(BIO_s_socket());
1406 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1409 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1410 SSL_set0_rbio(s
, bio
);
1413 SSL_set0_rbio(s
, wbio
);
1420 /* return length of latest Finished message we sent, copy to 'buf' */
1421 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1425 ret
= s
->s3
.tmp
.finish_md_len
;
1428 memcpy(buf
, s
->s3
.tmp
.finish_md
, count
);
1432 /* return length of latest Finished message we expected, copy to 'buf' */
1433 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1437 ret
= s
->s3
.tmp
.peer_finish_md_len
;
1440 memcpy(buf
, s
->s3
.tmp
.peer_finish_md
, count
);
1444 int SSL_get_verify_mode(const SSL
*s
)
1446 return s
->verify_mode
;
1449 int SSL_get_verify_depth(const SSL
*s
)
1451 return X509_VERIFY_PARAM_get_depth(s
->param
);
1454 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1455 return s
->verify_callback
;
1458 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1460 return ctx
->verify_mode
;
1463 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1465 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1468 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1469 return ctx
->default_verify_callback
;
1472 void SSL_set_verify(SSL
*s
, int mode
,
1473 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1475 s
->verify_mode
= mode
;
1476 if (callback
!= NULL
)
1477 s
->verify_callback
= callback
;
1480 void SSL_set_verify_depth(SSL
*s
, int depth
)
1482 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1485 void SSL_set_read_ahead(SSL
*s
, int yes
)
1487 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1490 int SSL_get_read_ahead(const SSL
*s
)
1492 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1495 int SSL_pending(const SSL
*s
)
1497 size_t pending
= s
->method
->ssl_pending(s
);
1500 * SSL_pending cannot work properly if read-ahead is enabled
1501 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1502 * impossible to fix since SSL_pending cannot report errors that may be
1503 * observed while scanning the new data. (Note that SSL_pending() is
1504 * often used as a boolean value, so we'd better not return -1.)
1506 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1507 * we just return INT_MAX.
1509 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1512 int SSL_has_pending(const SSL
*s
)
1515 * Similar to SSL_pending() but returns a 1 to indicate that we have
1516 * unprocessed data available or 0 otherwise (as opposed to the number of
1517 * bytes available). Unlike SSL_pending() this will take into account
1518 * read_ahead data. A 1 return simply indicates that we have unprocessed
1519 * data. That data may not result in any application data, or we may fail
1520 * to parse the records for some reason.
1522 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1525 return RECORD_LAYER_read_pending(&s
->rlayer
);
1528 X509
*SSL_get_peer_certificate(const SSL
*s
)
1532 if ((s
== NULL
) || (s
->session
== NULL
))
1535 r
= s
->session
->peer
;
1545 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1549 if ((s
== NULL
) || (s
->session
== NULL
))
1552 r
= s
->session
->peer_chain
;
1555 * If we are a client, cert_chain includes the peer's own certificate; if
1556 * we are a server, it does not.
1563 * Now in theory, since the calling process own 't' it should be safe to
1564 * modify. We need to be able to read f without being hassled
1566 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1569 /* Do we need to to SSL locking? */
1570 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1575 * what if we are setup for one protocol version but want to talk another
1577 if (t
->method
!= f
->method
) {
1578 t
->method
->ssl_free(t
);
1579 t
->method
= f
->method
;
1580 if (t
->method
->ssl_new(t
) == 0)
1584 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1585 ssl_cert_free(t
->cert
);
1587 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1594 /* Fix this so it checks all the valid key/cert options */
1595 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1597 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1598 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1601 if (ctx
->cert
->key
->privatekey
== NULL
) {
1602 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1605 return X509_check_private_key
1606 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
);
1609 /* Fix this function so that it takes an optional type parameter */
1610 int SSL_check_private_key(const SSL
*ssl
)
1613 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1616 if (ssl
->cert
->key
->x509
== NULL
) {
1617 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1620 if (ssl
->cert
->key
->privatekey
== NULL
) {
1621 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1624 return X509_check_private_key(ssl
->cert
->key
->x509
,
1625 ssl
->cert
->key
->privatekey
);
1628 int SSL_waiting_for_async(SSL
*s
)
1636 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1638 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1642 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1645 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1646 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1648 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1652 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1656 int SSL_CTX_set_async_callback(SSL_CTX
*ctx
, SSL_async_callback_fn callback
)
1658 ctx
->async_cb
= callback
;
1662 int SSL_CTX_set_async_callback_arg(SSL_CTX
*ctx
, void *arg
)
1664 ctx
->async_cb_arg
= arg
;
1668 int SSL_set_async_callback(SSL
*s
, SSL_async_callback_fn callback
)
1670 s
->async_cb
= callback
;
1674 int SSL_set_async_callback_arg(SSL
*s
, void *arg
)
1676 s
->async_cb_arg
= arg
;
1680 int SSL_get_async_status(SSL
*s
, int *status
)
1682 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1686 *status
= ASYNC_WAIT_CTX_get_status(ctx
);
1690 int SSL_accept(SSL
*s
)
1692 if (s
->handshake_func
== NULL
) {
1693 /* Not properly initialized yet */
1694 SSL_set_accept_state(s
);
1697 return SSL_do_handshake(s
);
1700 int SSL_connect(SSL
*s
)
1702 if (s
->handshake_func
== NULL
) {
1703 /* Not properly initialized yet */
1704 SSL_set_connect_state(s
);
1707 return SSL_do_handshake(s
);
1710 long SSL_get_default_timeout(const SSL
*s
)
1712 return s
->method
->get_timeout();
1715 static int ssl_async_wait_ctx_cb(void *arg
)
1717 SSL
*s
= (SSL
*)arg
;
1719 return s
->async_cb(s
, s
->async_cb_arg
);
1722 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1723 int (*func
) (void *))
1726 if (s
->waitctx
== NULL
) {
1727 s
->waitctx
= ASYNC_WAIT_CTX_new();
1728 if (s
->waitctx
== NULL
)
1730 if (s
->async_cb
!= NULL
1731 && !ASYNC_WAIT_CTX_set_callback
1732 (s
->waitctx
, ssl_async_wait_ctx_cb
, s
))
1735 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1736 sizeof(struct ssl_async_args
))) {
1738 s
->rwstate
= SSL_NOTHING
;
1739 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1742 s
->rwstate
= SSL_ASYNC_PAUSED
;
1745 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1751 s
->rwstate
= SSL_NOTHING
;
1752 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1753 /* Shouldn't happen */
1758 static int ssl_io_intern(void *vargs
)
1760 struct ssl_async_args
*args
;
1765 args
= (struct ssl_async_args
*)vargs
;
1769 switch (args
->type
) {
1771 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1773 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1775 return args
->f
.func_other(s
);
1780 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1782 if (s
->handshake_func
== NULL
) {
1783 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1787 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1788 s
->rwstate
= SSL_NOTHING
;
1792 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1793 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1794 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1798 * If we are a client and haven't received the ServerHello etc then we
1801 ossl_statem_check_finish_init(s
, 0);
1803 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1804 struct ssl_async_args args
;
1810 args
.type
= READFUNC
;
1811 args
.f
.func_read
= s
->method
->ssl_read
;
1813 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1814 *readbytes
= s
->asyncrw
;
1817 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1821 int SSL_read(SSL
*s
, void *buf
, int num
)
1827 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1831 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1834 * The cast is safe here because ret should be <= INT_MAX because num is
1838 ret
= (int)readbytes
;
1843 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1845 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1852 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1857 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1858 return SSL_READ_EARLY_DATA_ERROR
;
1861 switch (s
->early_data_state
) {
1862 case SSL_EARLY_DATA_NONE
:
1863 if (!SSL_in_before(s
)) {
1864 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1865 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1866 return SSL_READ_EARLY_DATA_ERROR
;
1870 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1871 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1872 ret
= SSL_accept(s
);
1875 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1876 return SSL_READ_EARLY_DATA_ERROR
;
1880 case SSL_EARLY_DATA_READ_RETRY
:
1881 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1882 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1883 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1885 * State machine will update early_data_state to
1886 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1889 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1890 != SSL_EARLY_DATA_FINISHED_READING
)) {
1891 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1892 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1893 : SSL_READ_EARLY_DATA_ERROR
;
1896 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1899 return SSL_READ_EARLY_DATA_FINISH
;
1902 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1903 return SSL_READ_EARLY_DATA_ERROR
;
1907 int SSL_get_early_data_status(const SSL
*s
)
1909 return s
->ext
.early_data
;
1912 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1914 if (s
->handshake_func
== NULL
) {
1915 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1919 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1922 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1923 struct ssl_async_args args
;
1929 args
.type
= READFUNC
;
1930 args
.f
.func_read
= s
->method
->ssl_peek
;
1932 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1933 *readbytes
= s
->asyncrw
;
1936 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1940 int SSL_peek(SSL
*s
, void *buf
, int num
)
1946 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1950 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1953 * The cast is safe here because ret should be <= INT_MAX because num is
1957 ret
= (int)readbytes
;
1963 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1965 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1972 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1974 if (s
->handshake_func
== NULL
) {
1975 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1979 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1980 s
->rwstate
= SSL_NOTHING
;
1981 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1985 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1986 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1987 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1988 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1991 /* If we are a client and haven't sent the Finished we better do that */
1992 ossl_statem_check_finish_init(s
, 1);
1994 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1996 struct ssl_async_args args
;
1999 args
.buf
= (void *)buf
;
2001 args
.type
= WRITEFUNC
;
2002 args
.f
.func_write
= s
->method
->ssl_write
;
2004 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
2005 *written
= s
->asyncrw
;
2008 return s
->method
->ssl_write(s
, buf
, num
, written
);
2012 ossl_ssize_t
SSL_sendfile(SSL
*s
, int fd
, off_t offset
, size_t size
, int flags
)
2016 if (s
->handshake_func
== NULL
) {
2017 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2021 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
2022 s
->rwstate
= SSL_NOTHING
;
2023 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
2027 if (!BIO_get_ktls_send(s
->wbio
)) {
2028 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2032 /* If we have an alert to send, lets send it */
2033 if (s
->s3
.alert_dispatch
) {
2034 ret
= (ossl_ssize_t
)s
->method
->ssl_dispatch_alert(s
);
2036 /* SSLfatal() already called if appropriate */
2039 /* if it went, fall through and send more stuff */
2042 s
->rwstate
= SSL_WRITING
;
2043 if (BIO_flush(s
->wbio
) <= 0) {
2044 if (!BIO_should_retry(s
->wbio
)) {
2045 s
->rwstate
= SSL_NOTHING
;
2048 set_sys_error(EAGAIN
);
2054 #ifndef OPENSSL_NO_KTLS
2055 ret
= ktls_sendfile(SSL_get_wfd(s
), fd
, offset
, size
, flags
);
2060 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2061 if ((get_last_sys_error() == EAGAIN
) ||
2062 (get_last_sys_error() == EINTR
) ||
2063 (get_last_sys_error() == EBUSY
))
2064 BIO_set_retry_write(s
->wbio
);
2067 #ifdef OPENSSL_NO_KTLS
2068 SYSerr(SYS_F_SENDFILE
, get_last_sys_error());
2070 SSLerr(SSL_F_SSL_SENDFILE
, SSL_R_UNINITIALIZED
);
2074 s
->rwstate
= SSL_NOTHING
;
2078 int SSL_write(SSL
*s
, const void *buf
, int num
)
2084 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
2088 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
2091 * The cast is safe here because ret should be <= INT_MAX because num is
2100 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2102 int ret
= ssl_write_internal(s
, buf
, num
, written
);
2109 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
2111 int ret
, early_data_state
;
2113 uint32_t partialwrite
;
2115 switch (s
->early_data_state
) {
2116 case SSL_EARLY_DATA_NONE
:
2118 || !SSL_in_before(s
)
2119 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
2120 && (s
->psk_use_session_cb
== NULL
))) {
2121 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
2122 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2127 case SSL_EARLY_DATA_CONNECT_RETRY
:
2128 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
2129 ret
= SSL_connect(s
);
2132 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
2137 case SSL_EARLY_DATA_WRITE_RETRY
:
2138 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
2140 * We disable partial write for early data because we don't keep track
2141 * of how many bytes we've written between the SSL_write_ex() call and
2142 * the flush if the flush needs to be retried)
2144 partialwrite
= s
->mode
& SSL_MODE_ENABLE_PARTIAL_WRITE
;
2145 s
->mode
&= ~SSL_MODE_ENABLE_PARTIAL_WRITE
;
2146 ret
= SSL_write_ex(s
, buf
, num
, &writtmp
);
2147 s
->mode
|= partialwrite
;
2149 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2152 s
->early_data_state
= SSL_EARLY_DATA_WRITE_FLUSH
;
2155 case SSL_EARLY_DATA_WRITE_FLUSH
:
2156 /* The buffering BIO is still in place so we need to flush it */
2157 if (statem_flush(s
) != 1)
2160 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
2163 case SSL_EARLY_DATA_FINISHED_READING
:
2164 case SSL_EARLY_DATA_READ_RETRY
:
2165 early_data_state
= s
->early_data_state
;
2166 /* We are a server writing to an unauthenticated client */
2167 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
2168 ret
= SSL_write_ex(s
, buf
, num
, written
);
2169 /* The buffering BIO is still in place */
2171 (void)BIO_flush(s
->wbio
);
2172 s
->early_data_state
= early_data_state
;
2176 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
2181 int SSL_shutdown(SSL
*s
)
2184 * Note that this function behaves differently from what one might
2185 * expect. Return values are 0 for no success (yet), 1 for success; but
2186 * calling it once is usually not enough, even if blocking I/O is used
2187 * (see ssl3_shutdown).
2190 if (s
->handshake_func
== NULL
) {
2191 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
2195 if (!SSL_in_init(s
)) {
2196 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
2197 struct ssl_async_args args
;
2200 args
.type
= OTHERFUNC
;
2201 args
.f
.func_other
= s
->method
->ssl_shutdown
;
2203 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
2205 return s
->method
->ssl_shutdown(s
);
2208 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
2213 int SSL_key_update(SSL
*s
, int updatetype
)
2216 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2217 * negotiated, and that it is appropriate to call SSL_key_update() instead
2218 * of SSL_renegotiate().
2220 if (!SSL_IS_TLS13(s
)) {
2221 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2225 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2226 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2227 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2231 if (!SSL_is_init_finished(s
)) {
2232 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2236 ossl_statem_set_in_init(s
, 1);
2237 s
->key_update
= updatetype
;
2241 int SSL_get_key_update_type(const SSL
*s
)
2243 return s
->key_update
;
2246 int SSL_renegotiate(SSL
*s
)
2248 if (SSL_IS_TLS13(s
)) {
2249 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2253 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2254 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2261 return s
->method
->ssl_renegotiate(s
);
2264 int SSL_renegotiate_abbreviated(SSL
*s
)
2266 if (SSL_IS_TLS13(s
)) {
2267 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2271 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2272 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2279 return s
->method
->ssl_renegotiate(s
);
2282 int SSL_renegotiate_pending(const SSL
*s
)
2285 * becomes true when negotiation is requested; false again once a
2286 * handshake has finished
2288 return (s
->renegotiate
!= 0);
2291 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2296 case SSL_CTRL_GET_READ_AHEAD
:
2297 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2298 case SSL_CTRL_SET_READ_AHEAD
:
2299 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2300 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2303 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2304 s
->msg_callback_arg
= parg
;
2308 return (s
->mode
|= larg
);
2309 case SSL_CTRL_CLEAR_MODE
:
2310 return (s
->mode
&= ~larg
);
2311 case SSL_CTRL_GET_MAX_CERT_LIST
:
2312 return (long)s
->max_cert_list
;
2313 case SSL_CTRL_SET_MAX_CERT_LIST
:
2316 l
= (long)s
->max_cert_list
;
2317 s
->max_cert_list
= (size_t)larg
;
2319 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2320 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2322 #ifndef OPENSSL_NO_KTLS
2323 if (s
->wbio
!= NULL
&& BIO_get_ktls_send(s
->wbio
))
2325 #endif /* OPENSSL_NO_KTLS */
2326 s
->max_send_fragment
= larg
;
2327 if (s
->max_send_fragment
< s
->split_send_fragment
)
2328 s
->split_send_fragment
= s
->max_send_fragment
;
2330 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2331 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2333 s
->split_send_fragment
= larg
;
2335 case SSL_CTRL_SET_MAX_PIPELINES
:
2336 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2338 s
->max_pipelines
= larg
;
2340 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2342 case SSL_CTRL_GET_RI_SUPPORT
:
2343 return s
->s3
.send_connection_binding
;
2344 case SSL_CTRL_CERT_FLAGS
:
2345 return (s
->cert
->cert_flags
|= larg
);
2346 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2347 return (s
->cert
->cert_flags
&= ~larg
);
2349 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2351 if (s
->s3
.tmp
.ciphers_raw
== NULL
)
2353 *(unsigned char **)parg
= s
->s3
.tmp
.ciphers_raw
;
2354 return (int)s
->s3
.tmp
.ciphers_rawlen
;
2356 return TLS_CIPHER_LEN
;
2358 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2359 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2361 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2365 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2366 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2367 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2368 &s
->min_proto_version
);
2369 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2370 return s
->min_proto_version
;
2371 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2372 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2373 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2374 &s
->max_proto_version
);
2375 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2376 return s
->max_proto_version
;
2378 return s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
);
2382 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2385 case SSL_CTRL_SET_MSG_CALLBACK
:
2386 s
->msg_callback
= (void (*)
2387 (int write_p
, int version
, int content_type
,
2388 const void *buf
, size_t len
, SSL
*ssl
,
2393 return s
->method
->ssl_callback_ctrl(s
, cmd
, fp
);
2397 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2399 return ctx
->sessions
;
2402 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2405 /* For some cases with ctx == NULL perform syntax checks */
2408 #ifndef OPENSSL_NO_EC
2409 case SSL_CTRL_SET_GROUPS_LIST
:
2410 return tls1_set_groups_list(NULL
, NULL
, parg
);
2412 case SSL_CTRL_SET_SIGALGS_LIST
:
2413 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2414 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2421 case SSL_CTRL_GET_READ_AHEAD
:
2422 return ctx
->read_ahead
;
2423 case SSL_CTRL_SET_READ_AHEAD
:
2424 l
= ctx
->read_ahead
;
2425 ctx
->read_ahead
= larg
;
2428 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2429 ctx
->msg_callback_arg
= parg
;
2432 case SSL_CTRL_GET_MAX_CERT_LIST
:
2433 return (long)ctx
->max_cert_list
;
2434 case SSL_CTRL_SET_MAX_CERT_LIST
:
2437 l
= (long)ctx
->max_cert_list
;
2438 ctx
->max_cert_list
= (size_t)larg
;
2441 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2444 l
= (long)ctx
->session_cache_size
;
2445 ctx
->session_cache_size
= (size_t)larg
;
2447 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2448 return (long)ctx
->session_cache_size
;
2449 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2450 l
= ctx
->session_cache_mode
;
2451 ctx
->session_cache_mode
= larg
;
2453 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2454 return ctx
->session_cache_mode
;
2456 case SSL_CTRL_SESS_NUMBER
:
2457 return lh_SSL_SESSION_num_items(ctx
->sessions
);
2458 case SSL_CTRL_SESS_CONNECT
:
2459 return tsan_load(&ctx
->stats
.sess_connect
);
2460 case SSL_CTRL_SESS_CONNECT_GOOD
:
2461 return tsan_load(&ctx
->stats
.sess_connect_good
);
2462 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2463 return tsan_load(&ctx
->stats
.sess_connect_renegotiate
);
2464 case SSL_CTRL_SESS_ACCEPT
:
2465 return tsan_load(&ctx
->stats
.sess_accept
);
2466 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2467 return tsan_load(&ctx
->stats
.sess_accept_good
);
2468 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2469 return tsan_load(&ctx
->stats
.sess_accept_renegotiate
);
2470 case SSL_CTRL_SESS_HIT
:
2471 return tsan_load(&ctx
->stats
.sess_hit
);
2472 case SSL_CTRL_SESS_CB_HIT
:
2473 return tsan_load(&ctx
->stats
.sess_cb_hit
);
2474 case SSL_CTRL_SESS_MISSES
:
2475 return tsan_load(&ctx
->stats
.sess_miss
);
2476 case SSL_CTRL_SESS_TIMEOUTS
:
2477 return tsan_load(&ctx
->stats
.sess_timeout
);
2478 case SSL_CTRL_SESS_CACHE_FULL
:
2479 return tsan_load(&ctx
->stats
.sess_cache_full
);
2481 return (ctx
->mode
|= larg
);
2482 case SSL_CTRL_CLEAR_MODE
:
2483 return (ctx
->mode
&= ~larg
);
2484 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2485 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2487 ctx
->max_send_fragment
= larg
;
2488 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2489 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2491 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2492 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2494 ctx
->split_send_fragment
= larg
;
2496 case SSL_CTRL_SET_MAX_PIPELINES
:
2497 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2499 ctx
->max_pipelines
= larg
;
2501 case SSL_CTRL_CERT_FLAGS
:
2502 return (ctx
->cert
->cert_flags
|= larg
);
2503 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2504 return (ctx
->cert
->cert_flags
&= ~larg
);
2505 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2506 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2507 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2508 &ctx
->min_proto_version
);
2509 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2510 return ctx
->min_proto_version
;
2511 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2512 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2513 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2514 &ctx
->max_proto_version
);
2515 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2516 return ctx
->max_proto_version
;
2518 return ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
);
2522 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2525 case SSL_CTRL_SET_MSG_CALLBACK
:
2526 ctx
->msg_callback
= (void (*)
2527 (int write_p
, int version
, int content_type
,
2528 const void *buf
, size_t len
, SSL
*ssl
,
2533 return ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
);
2537 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2546 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2547 const SSL_CIPHER
*const *bp
)
2549 if ((*ap
)->id
> (*bp
)->id
)
2551 if ((*ap
)->id
< (*bp
)->id
)
2556 /** return a STACK of the ciphers available for the SSL and in order of
2558 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2561 if (s
->cipher_list
!= NULL
) {
2562 return s
->cipher_list
;
2563 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2564 return s
->ctx
->cipher_list
;
2570 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2572 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2574 return s
->session
->ciphers
;
2577 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2579 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2582 ciphers
= SSL_get_ciphers(s
);
2585 if (!ssl_set_client_disabled(s
))
2587 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2588 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2589 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2591 sk
= sk_SSL_CIPHER_new_null();
2594 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2595 sk_SSL_CIPHER_free(sk
);
2603 /** return a STACK of the ciphers available for the SSL and in order of
2605 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2608 if (s
->cipher_list_by_id
!= NULL
) {
2609 return s
->cipher_list_by_id
;
2610 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2611 return s
->ctx
->cipher_list_by_id
;
2617 /** The old interface to get the same thing as SSL_get_ciphers() */
2618 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2620 const SSL_CIPHER
*c
;
2621 STACK_OF(SSL_CIPHER
) *sk
;
2625 sk
= SSL_get_ciphers(s
);
2626 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2628 c
= sk_SSL_CIPHER_value(sk
, n
);
2634 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2636 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2639 return ctx
->cipher_list
;
2644 * Distinguish between ciphers controlled by set_ciphersuite() and
2645 * set_cipher_list() when counting.
2647 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER
) *sk
)
2650 const SSL_CIPHER
*c
;
2654 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); ++i
) {
2655 c
= sk_SSL_CIPHER_value(sk
, i
);
2656 if (c
->min_tls
>= TLS1_3_VERSION
)
2663 /** specify the ciphers to be used by default by the SSL_CTX */
2664 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2666 STACK_OF(SSL_CIPHER
) *sk
;
2668 sk
= ssl_create_cipher_list(ctx
->method
, ctx
->tls13_ciphersuites
,
2669 &ctx
->cipher_list
, &ctx
->cipher_list_by_id
, str
,
2672 * ssl_create_cipher_list may return an empty stack if it was unable to
2673 * find a cipher matching the given rule string (for example if the rule
2674 * string specifies a cipher which has been disabled). This is not an
2675 * error as far as ssl_create_cipher_list is concerned, and hence
2676 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2680 else if (cipher_list_tls12_num(sk
) == 0) {
2681 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2687 /** specify the ciphers to be used by the SSL */
2688 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2690 STACK_OF(SSL_CIPHER
) *sk
;
2692 sk
= ssl_create_cipher_list(s
->ctx
->method
, s
->tls13_ciphersuites
,
2693 &s
->cipher_list
, &s
->cipher_list_by_id
, str
,
2695 /* see comment in SSL_CTX_set_cipher_list */
2698 else if (cipher_list_tls12_num(sk
) == 0) {
2699 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2705 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int size
)
2708 STACK_OF(SSL_CIPHER
) *clntsk
, *srvrsk
;
2709 const SSL_CIPHER
*c
;
2713 || s
->session
== NULL
2714 || s
->session
->ciphers
== NULL
2719 clntsk
= s
->session
->ciphers
;
2720 srvrsk
= SSL_get_ciphers(s
);
2721 if (clntsk
== NULL
|| srvrsk
== NULL
)
2724 if (sk_SSL_CIPHER_num(clntsk
) == 0 || sk_SSL_CIPHER_num(srvrsk
) == 0)
2727 for (i
= 0; i
< sk_SSL_CIPHER_num(clntsk
); i
++) {
2730 c
= sk_SSL_CIPHER_value(clntsk
, i
);
2731 if (sk_SSL_CIPHER_find(srvrsk
, c
) < 0)
2734 n
= strlen(c
->name
);
2750 /** return a servername extension value if provided in Client Hello, or NULL.
2751 * So far, only host_name types are defined (RFC 3546).
2754 const char *SSL_get_servername(const SSL
*s
, const int type
)
2756 if (type
!= TLSEXT_NAMETYPE_host_name
)
2760 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2761 * SNI value to return if we are resuming/resumed. N.B. that we still
2762 * call the relevant callbacks for such resumption flows, and callbacks
2763 * might error out if there is not a SNI value available.
2766 return s
->session
->ext
.hostname
;
2767 return s
->ext
.hostname
;
2770 int SSL_get_servername_type(const SSL
*s
)
2773 && (!s
->ext
.hostname
? s
->session
->
2774 ext
.hostname
: s
->ext
.hostname
))
2775 return TLSEXT_NAMETYPE_host_name
;
2780 * SSL_select_next_proto implements the standard protocol selection. It is
2781 * expected that this function is called from the callback set by
2782 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2783 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2784 * not included in the length. A byte string of length 0 is invalid. No byte
2785 * string may be truncated. The current, but experimental algorithm for
2786 * selecting the protocol is: 1) If the server doesn't support NPN then this
2787 * is indicated to the callback. In this case, the client application has to
2788 * abort the connection or have a default application level protocol. 2) If
2789 * the server supports NPN, but advertises an empty list then the client
2790 * selects the first protocol in its list, but indicates via the API that this
2791 * fallback case was enacted. 3) Otherwise, the client finds the first
2792 * protocol in the server's list that it supports and selects this protocol.
2793 * This is because it's assumed that the server has better information about
2794 * which protocol a client should use. 4) If the client doesn't support any
2795 * of the server's advertised protocols, then this is treated the same as
2796 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2797 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2799 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2800 const unsigned char *server
,
2801 unsigned int server_len
,
2802 const unsigned char *client
, unsigned int client_len
)
2805 const unsigned char *result
;
2806 int status
= OPENSSL_NPN_UNSUPPORTED
;
2809 * For each protocol in server preference order, see if we support it.
2811 for (i
= 0; i
< server_len
;) {
2812 for (j
= 0; j
< client_len
;) {
2813 if (server
[i
] == client
[j
] &&
2814 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2815 /* We found a match */
2816 result
= &server
[i
];
2817 status
= OPENSSL_NPN_NEGOTIATED
;
2827 /* There's no overlap between our protocols and the server's list. */
2829 status
= OPENSSL_NPN_NO_OVERLAP
;
2832 *out
= (unsigned char *)result
+ 1;
2833 *outlen
= result
[0];
2837 #ifndef OPENSSL_NO_NEXTPROTONEG
2839 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2840 * client's requested protocol for this connection and returns 0. If the
2841 * client didn't request any protocol, then *data is set to NULL. Note that
2842 * the client can request any protocol it chooses. The value returned from
2843 * this function need not be a member of the list of supported protocols
2844 * provided by the callback.
2846 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2853 *len
= (unsigned int)s
->ext
.npn_len
;
2858 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2859 * a TLS server needs a list of supported protocols for Next Protocol
2860 * Negotiation. The returned list must be in wire format. The list is
2861 * returned by setting |out| to point to it and |outlen| to its length. This
2862 * memory will not be modified, but one should assume that the SSL* keeps a
2863 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2864 * wishes to advertise. Otherwise, no such extension will be included in the
2867 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2868 SSL_CTX_npn_advertised_cb_func cb
,
2871 ctx
->ext
.npn_advertised_cb
= cb
;
2872 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2876 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2877 * client needs to select a protocol from the server's provided list. |out|
2878 * must be set to point to the selected protocol (which may be within |in|).
2879 * The length of the protocol name must be written into |outlen|. The
2880 * server's advertised protocols are provided in |in| and |inlen|. The
2881 * callback can assume that |in| is syntactically valid. The client must
2882 * select a protocol. It is fatal to the connection if this callback returns
2883 * a value other than SSL_TLSEXT_ERR_OK.
2885 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2886 SSL_CTX_npn_select_cb_func cb
,
2889 ctx
->ext
.npn_select_cb
= cb
;
2890 ctx
->ext
.npn_select_cb_arg
= arg
;
2895 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2896 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2897 * length-prefixed strings). Returns 0 on success.
2899 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2900 unsigned int protos_len
)
2902 OPENSSL_free(ctx
->ext
.alpn
);
2903 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2904 if (ctx
->ext
.alpn
== NULL
) {
2905 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2908 ctx
->ext
.alpn_len
= protos_len
;
2914 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2915 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2916 * length-prefixed strings). Returns 0 on success.
2918 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2919 unsigned int protos_len
)
2921 OPENSSL_free(ssl
->ext
.alpn
);
2922 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2923 if (ssl
->ext
.alpn
== NULL
) {
2924 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2927 ssl
->ext
.alpn_len
= protos_len
;
2933 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2934 * called during ClientHello processing in order to select an ALPN protocol
2935 * from the client's list of offered protocols.
2937 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2938 SSL_CTX_alpn_select_cb_func cb
,
2941 ctx
->ext
.alpn_select_cb
= cb
;
2942 ctx
->ext
.alpn_select_cb_arg
= arg
;
2946 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2947 * On return it sets |*data| to point to |*len| bytes of protocol name
2948 * (not including the leading length-prefix byte). If the server didn't
2949 * respond with a negotiated protocol then |*len| will be zero.
2951 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2954 *data
= ssl
->s3
.alpn_selected
;
2958 *len
= (unsigned int)ssl
->s3
.alpn_selected_len
;
2961 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2962 const char *label
, size_t llen
,
2963 const unsigned char *context
, size_t contextlen
,
2966 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2969 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2971 contextlen
, use_context
);
2974 int SSL_export_keying_material_early(SSL
*s
, unsigned char *out
, size_t olen
,
2975 const char *label
, size_t llen
,
2976 const unsigned char *context
,
2979 if (s
->version
!= TLS1_3_VERSION
)
2982 return tls13_export_keying_material_early(s
, out
, olen
, label
, llen
,
2983 context
, contextlen
);
2986 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2988 const unsigned char *session_id
= a
->session_id
;
2990 unsigned char tmp_storage
[4];
2992 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2993 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2994 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2995 session_id
= tmp_storage
;
2999 ((unsigned long)session_id
[0]) |
3000 ((unsigned long)session_id
[1] << 8L) |
3001 ((unsigned long)session_id
[2] << 16L) |
3002 ((unsigned long)session_id
[3] << 24L);
3007 * NB: If this function (or indeed the hash function which uses a sort of
3008 * coarser function than this one) is changed, ensure
3009 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3010 * being able to construct an SSL_SESSION that will collide with any existing
3011 * session with a matching session ID.
3013 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
3015 if (a
->ssl_version
!= b
->ssl_version
)
3017 if (a
->session_id_length
!= b
->session_id_length
)
3019 return memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
);
3023 * These wrapper functions should remain rather than redeclaring
3024 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3025 * variable. The reason is that the functions aren't static, they're exposed
3029 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
3031 SSL_CTX
*ret
= NULL
;
3034 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
3038 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
3041 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3042 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
3045 ret
= OPENSSL_zalloc(sizeof(*ret
));
3050 ret
->min_proto_version
= 0;
3051 ret
->max_proto_version
= 0;
3052 ret
->mode
= SSL_MODE_AUTO_RETRY
;
3053 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
3054 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
3055 /* We take the system default. */
3056 ret
->session_timeout
= meth
->get_timeout();
3057 ret
->references
= 1;
3058 ret
->lock
= CRYPTO_THREAD_lock_new();
3059 if (ret
->lock
== NULL
) {
3060 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3064 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
3065 ret
->verify_mode
= SSL_VERIFY_NONE
;
3066 if ((ret
->cert
= ssl_cert_new()) == NULL
)
3069 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
3070 if (ret
->sessions
== NULL
)
3072 ret
->cert_store
= X509_STORE_new();
3073 if (ret
->cert_store
== NULL
)
3075 #ifndef OPENSSL_NO_CT
3076 ret
->ctlog_store
= CTLOG_STORE_new();
3077 if (ret
->ctlog_store
== NULL
)
3081 if (!SSL_CTX_set_ciphersuites(ret
, OSSL_default_ciphersuites()))
3084 if (!ssl_create_cipher_list(ret
->method
,
3085 ret
->tls13_ciphersuites
,
3086 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
3087 OSSL_default_cipher_list(), ret
->cert
)
3088 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
3089 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
3093 ret
->param
= X509_VERIFY_PARAM_new();
3094 if (ret
->param
== NULL
)
3097 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
3098 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
3101 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
3102 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
3106 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
3109 if ((ret
->client_ca_names
= sk_X509_NAME_new_null()) == NULL
)
3112 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
3115 if ((ret
->ext
.secure
= OPENSSL_secure_zalloc(sizeof(*ret
->ext
.secure
))) == NULL
)
3118 /* No compression for DTLS */
3119 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
3120 ret
->comp_methods
= SSL_COMP_get_compression_methods();
3122 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3123 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
3125 /* Setup RFC5077 ticket keys */
3126 if ((RAND_bytes(ret
->ext
.tick_key_name
,
3127 sizeof(ret
->ext
.tick_key_name
)) <= 0)
3128 || (RAND_priv_bytes(ret
->ext
.secure
->tick_hmac_key
,
3129 sizeof(ret
->ext
.secure
->tick_hmac_key
)) <= 0)
3130 || (RAND_priv_bytes(ret
->ext
.secure
->tick_aes_key
,
3131 sizeof(ret
->ext
.secure
->tick_aes_key
)) <= 0))
3132 ret
->options
|= SSL_OP_NO_TICKET
;
3134 if (RAND_priv_bytes(ret
->ext
.cookie_hmac_key
,
3135 sizeof(ret
->ext
.cookie_hmac_key
)) <= 0)
3138 #ifndef OPENSSL_NO_SRP
3139 if (!SSL_CTX_SRP_CTX_init(ret
))
3142 #ifndef OPENSSL_NO_ENGINE
3143 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3144 # define eng_strx(x) #x
3145 # define eng_str(x) eng_strx(x)
3146 /* Use specific client engine automatically... ignore errors */
3149 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3152 ENGINE_load_builtin_engines();
3153 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
3155 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
3161 * Default is to connect to non-RI servers. When RI is more widely
3162 * deployed might change this.
3164 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
3166 * Disable compression by default to prevent CRIME. Applications can
3167 * re-enable compression by configuring
3168 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3169 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3170 * middlebox compatibility by default. This may be disabled by default in
3171 * a later OpenSSL version.
3173 ret
->options
|= SSL_OP_NO_COMPRESSION
| SSL_OP_ENABLE_MIDDLEBOX_COMPAT
;
3175 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
3178 * We cannot usefully set a default max_early_data here (which gets
3179 * propagated in SSL_new(), for the following reason: setting the
3180 * SSL field causes tls_construct_stoc_early_data() to tell the
3181 * client that early data will be accepted when constructing a TLS 1.3
3182 * session ticket, and the client will accordingly send us early data
3183 * when using that ticket (if the client has early data to send).
3184 * However, in order for the early data to actually be consumed by
3185 * the application, the application must also have calls to
3186 * SSL_read_early_data(); otherwise we'll just skip past the early data
3187 * and ignore it. So, since the application must add calls to
3188 * SSL_read_early_data(), we also require them to add
3189 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3190 * eliminating the bandwidth-wasting early data in the case described
3193 ret
->max_early_data
= 0;
3196 * Default recv_max_early_data is a fully loaded single record. Could be
3197 * split across multiple records in practice. We set this differently to
3198 * max_early_data so that, in the default case, we do not advertise any
3199 * support for early_data, but if a client were to send us some (e.g.
3200 * because of an old, stale ticket) then we will tolerate it and skip over
3203 ret
->recv_max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
3205 /* By default we send two session tickets automatically in TLSv1.3 */
3206 ret
->num_tickets
= 2;
3208 ssl_ctx_system_config(ret
);
3212 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
3218 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
3222 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
3225 REF_PRINT_COUNT("SSL_CTX", ctx
);
3226 REF_ASSERT_ISNT(i
< 2);
3227 return ((i
> 1) ? 1 : 0);
3230 void SSL_CTX_free(SSL_CTX
*a
)
3237 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
3238 REF_PRINT_COUNT("SSL_CTX", a
);
3241 REF_ASSERT_ISNT(i
< 0);
3243 X509_VERIFY_PARAM_free(a
->param
);
3244 dane_ctx_final(&a
->dane
);
3247 * Free internal session cache. However: the remove_cb() may reference
3248 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3249 * after the sessions were flushed.
3250 * As the ex_data handling routines might also touch the session cache,
3251 * the most secure solution seems to be: empty (flush) the cache, then
3252 * free ex_data, then finally free the cache.
3253 * (See ticket [openssl.org #212].)
3255 if (a
->sessions
!= NULL
)
3256 SSL_CTX_flush_sessions(a
, 0);
3258 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
3259 lh_SSL_SESSION_free(a
->sessions
);
3260 X509_STORE_free(a
->cert_store
);
3261 #ifndef OPENSSL_NO_CT
3262 CTLOG_STORE_free(a
->ctlog_store
);
3264 sk_SSL_CIPHER_free(a
->cipher_list
);
3265 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
3266 sk_SSL_CIPHER_free(a
->tls13_ciphersuites
);
3267 ssl_cert_free(a
->cert
);
3268 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
3269 sk_X509_NAME_pop_free(a
->client_ca_names
, X509_NAME_free
);
3270 sk_X509_pop_free(a
->extra_certs
, X509_free
);
3271 a
->comp_methods
= NULL
;
3272 #ifndef OPENSSL_NO_SRTP
3273 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
3275 #ifndef OPENSSL_NO_SRP
3276 SSL_CTX_SRP_CTX_free(a
);
3278 #ifndef OPENSSL_NO_ENGINE
3279 ENGINE_finish(a
->client_cert_engine
);
3282 #ifndef OPENSSL_NO_EC
3283 OPENSSL_free(a
->ext
.ecpointformats
);
3284 OPENSSL_free(a
->ext
.supportedgroups
);
3286 OPENSSL_free(a
->ext
.alpn
);
3287 OPENSSL_secure_free(a
->ext
.secure
);
3289 CRYPTO_THREAD_lock_free(a
->lock
);
3294 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
3296 ctx
->default_passwd_callback
= cb
;
3299 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
3301 ctx
->default_passwd_callback_userdata
= u
;
3304 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
3306 return ctx
->default_passwd_callback
;
3309 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
3311 return ctx
->default_passwd_callback_userdata
;
3314 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
3316 s
->default_passwd_callback
= cb
;
3319 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3321 s
->default_passwd_callback_userdata
= u
;
3324 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3326 return s
->default_passwd_callback
;
3329 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3331 return s
->default_passwd_callback_userdata
;
3334 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3335 int (*cb
) (X509_STORE_CTX
*, void *),
3338 ctx
->app_verify_callback
= cb
;
3339 ctx
->app_verify_arg
= arg
;
3342 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3343 int (*cb
) (int, X509_STORE_CTX
*))
3345 ctx
->verify_mode
= mode
;
3346 ctx
->default_verify_callback
= cb
;
3349 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3351 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3354 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3356 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3359 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3361 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3364 void ssl_set_masks(SSL
*s
)
3367 uint32_t *pvalid
= s
->s3
.tmp
.valid_flags
;
3368 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3369 unsigned long mask_k
, mask_a
;
3370 #ifndef OPENSSL_NO_EC
3371 int have_ecc_cert
, ecdsa_ok
;
3376 #ifndef OPENSSL_NO_DH
3377 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3382 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3383 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3384 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3385 #ifndef OPENSSL_NO_EC
3386 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3391 OSSL_TRACE4(TLS_CIPHER
, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3392 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3394 #ifndef OPENSSL_NO_GOST
3395 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3396 mask_k
|= SSL_kGOST
;
3397 mask_a
|= SSL_aGOST12
;
3399 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3400 mask_k
|= SSL_kGOST
;
3401 mask_a
|= SSL_aGOST12
;
3403 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3404 mask_k
|= SSL_kGOST
;
3405 mask_a
|= SSL_aGOST01
;
3416 * If we only have an RSA-PSS certificate allow RSA authentication
3417 * if TLS 1.2 and peer supports it.
3420 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3421 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3422 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3429 mask_a
|= SSL_aNULL
;
3432 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3433 * depending on the key usage extension.
3435 #ifndef OPENSSL_NO_EC
3436 if (have_ecc_cert
) {
3438 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3439 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3440 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3443 mask_a
|= SSL_aECDSA
;
3445 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3446 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3447 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3448 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3449 mask_a
|= SSL_aECDSA
;
3451 /* Allow Ed448 for TLS 1.2 if peer supports it */
3452 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED448
)
3453 && pvalid
[SSL_PKEY_ED448
] & CERT_PKEY_EXPLICIT_SIGN
3454 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3455 mask_a
|= SSL_aECDSA
;
3458 #ifndef OPENSSL_NO_EC
3459 mask_k
|= SSL_kECDHE
;
3462 #ifndef OPENSSL_NO_PSK
3465 if (mask_k
& SSL_kRSA
)
3466 mask_k
|= SSL_kRSAPSK
;
3467 if (mask_k
& SSL_kDHE
)
3468 mask_k
|= SSL_kDHEPSK
;
3469 if (mask_k
& SSL_kECDHE
)
3470 mask_k
|= SSL_kECDHEPSK
;
3473 s
->s3
.tmp
.mask_k
= mask_k
;
3474 s
->s3
.tmp
.mask_a
= mask_a
;
3477 #ifndef OPENSSL_NO_EC
3479 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3481 if (s
->s3
.tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3482 /* key usage, if present, must allow signing */
3483 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3484 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3485 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3489 return 1; /* all checks are ok */
3494 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3495 size_t *serverinfo_length
)
3497 CERT_PKEY
*cpk
= s
->s3
.tmp
.cert
;
3498 *serverinfo_length
= 0;
3500 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3503 *serverinfo
= cpk
->serverinfo
;
3504 *serverinfo_length
= cpk
->serverinfo_length
;
3508 void ssl_update_cache(SSL
*s
, int mode
)
3513 * If the session_id_length is 0, we are not supposed to cache it, and it
3514 * would be rather hard to do anyway :-)
3516 if (s
->session
->session_id_length
== 0)
3520 * If sid_ctx_length is 0 there is no specific application context
3521 * associated with this session, so when we try to resume it and
3522 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3523 * indication that this is actually a session for the proper application
3524 * context, and the *handshake* will fail, not just the resumption attempt.
3525 * Do not cache (on the server) these sessions that are not resumable
3526 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3528 if (s
->server
&& s
->session
->sid_ctx_length
== 0
3529 && (s
->verify_mode
& SSL_VERIFY_PEER
) != 0)
3532 i
= s
->session_ctx
->session_cache_mode
;
3534 && (!s
->hit
|| SSL_IS_TLS13(s
))) {
3536 * Add the session to the internal cache. In server side TLSv1.3 we
3537 * normally don't do this because by default it's a full stateless ticket
3538 * with only a dummy session id so there is no reason to cache it,
3540 * - we are doing early_data, in which case we cache so that we can
3542 * - the application has set a remove_session_cb so needs to know about
3543 * session timeout events
3544 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3546 if ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) == 0
3547 && (!SSL_IS_TLS13(s
)
3549 || (s
->max_early_data
> 0
3550 && (s
->options
& SSL_OP_NO_ANTI_REPLAY
) == 0)
3551 || s
->session_ctx
->remove_session_cb
!= NULL
3552 || (s
->options
& SSL_OP_NO_TICKET
) != 0))
3553 SSL_CTX_add_session(s
->session_ctx
, s
->session
);
3556 * Add the session to the external cache. We do this even in server side
3557 * TLSv1.3 without early data because some applications just want to
3558 * know about the creation of a session and aren't doing a full cache.
3560 if (s
->session_ctx
->new_session_cb
!= NULL
) {
3561 SSL_SESSION_up_ref(s
->session
);
3562 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3563 SSL_SESSION_free(s
->session
);
3567 /* auto flush every 255 connections */
3568 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3569 TSAN_QUALIFIER
int *stat
;
3570 if (mode
& SSL_SESS_CACHE_CLIENT
)
3571 stat
= &s
->session_ctx
->stats
.sess_connect_good
;
3573 stat
= &s
->session_ctx
->stats
.sess_accept_good
;
3574 if ((tsan_load(stat
) & 0xff) == 0xff)
3575 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3579 const SSL_METHOD
*SSL_CTX_get_ssl_method(const SSL_CTX
*ctx
)
3584 const SSL_METHOD
*SSL_get_ssl_method(const SSL
*s
)
3589 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3593 if (s
->method
!= meth
) {
3594 const SSL_METHOD
*sm
= s
->method
;
3595 int (*hf
) (SSL
*) = s
->handshake_func
;
3597 if (sm
->version
== meth
->version
)
3602 ret
= s
->method
->ssl_new(s
);
3605 if (hf
== sm
->ssl_connect
)
3606 s
->handshake_func
= meth
->ssl_connect
;
3607 else if (hf
== sm
->ssl_accept
)
3608 s
->handshake_func
= meth
->ssl_accept
;
3613 int SSL_get_error(const SSL
*s
, int i
)
3620 return SSL_ERROR_NONE
;
3623 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3624 * where we do encode the error
3626 if ((l
= ERR_peek_error()) != 0) {
3627 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3628 return SSL_ERROR_SYSCALL
;
3630 return SSL_ERROR_SSL
;
3633 if (SSL_want_read(s
)) {
3634 bio
= SSL_get_rbio(s
);
3635 if (BIO_should_read(bio
))
3636 return SSL_ERROR_WANT_READ
;
3637 else if (BIO_should_write(bio
))
3639 * This one doesn't make too much sense ... We never try to write
3640 * to the rbio, and an application program where rbio and wbio
3641 * are separate couldn't even know what it should wait for.
3642 * However if we ever set s->rwstate incorrectly (so that we have
3643 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3644 * wbio *are* the same, this test works around that bug; so it
3645 * might be safer to keep it.
3647 return SSL_ERROR_WANT_WRITE
;
3648 else if (BIO_should_io_special(bio
)) {
3649 reason
= BIO_get_retry_reason(bio
);
3650 if (reason
== BIO_RR_CONNECT
)
3651 return SSL_ERROR_WANT_CONNECT
;
3652 else if (reason
== BIO_RR_ACCEPT
)
3653 return SSL_ERROR_WANT_ACCEPT
;
3655 return SSL_ERROR_SYSCALL
; /* unknown */
3659 if (SSL_want_write(s
)) {
3660 /* Access wbio directly - in order to use the buffered bio if present */
3662 if (BIO_should_write(bio
))
3663 return SSL_ERROR_WANT_WRITE
;
3664 else if (BIO_should_read(bio
))
3666 * See above (SSL_want_read(s) with BIO_should_write(bio))
3668 return SSL_ERROR_WANT_READ
;
3669 else if (BIO_should_io_special(bio
)) {
3670 reason
= BIO_get_retry_reason(bio
);
3671 if (reason
== BIO_RR_CONNECT
)
3672 return SSL_ERROR_WANT_CONNECT
;
3673 else if (reason
== BIO_RR_ACCEPT
)
3674 return SSL_ERROR_WANT_ACCEPT
;
3676 return SSL_ERROR_SYSCALL
;
3679 if (SSL_want_x509_lookup(s
))
3680 return SSL_ERROR_WANT_X509_LOOKUP
;
3681 if (SSL_want_async(s
))
3682 return SSL_ERROR_WANT_ASYNC
;
3683 if (SSL_want_async_job(s
))
3684 return SSL_ERROR_WANT_ASYNC_JOB
;
3685 if (SSL_want_client_hello_cb(s
))
3686 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3688 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3689 (s
->s3
.warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3690 return SSL_ERROR_ZERO_RETURN
;
3692 return SSL_ERROR_SYSCALL
;
3695 static int ssl_do_handshake_intern(void *vargs
)
3697 struct ssl_async_args
*args
;
3700 args
= (struct ssl_async_args
*)vargs
;
3703 return s
->handshake_func(s
);
3706 int SSL_do_handshake(SSL
*s
)
3710 if (s
->handshake_func
== NULL
) {
3711 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3715 ossl_statem_check_finish_init(s
, -1);
3717 s
->method
->ssl_renegotiate_check(s
, 0);
3719 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3720 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3721 struct ssl_async_args args
;
3725 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3727 ret
= s
->handshake_func(s
);
3733 void SSL_set_accept_state(SSL
*s
)
3737 ossl_statem_clear(s
);
3738 s
->handshake_func
= s
->method
->ssl_accept
;
3742 void SSL_set_connect_state(SSL
*s
)
3746 ossl_statem_clear(s
);
3747 s
->handshake_func
= s
->method
->ssl_connect
;
3751 int ssl_undefined_function(SSL
*s
)
3753 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3757 int ssl_undefined_void_function(void)
3759 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3760 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3764 int ssl_undefined_const_function(const SSL
*s
)
3769 const SSL_METHOD
*ssl_bad_method(int ver
)
3771 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3775 const char *ssl_protocol_to_string(int version
)
3779 case TLS1_3_VERSION
:
3782 case TLS1_2_VERSION
:
3785 case TLS1_1_VERSION
:
3800 case DTLS1_2_VERSION
:
3808 const char *SSL_get_version(const SSL
*s
)
3810 return ssl_protocol_to_string(s
->version
);
3813 static int dup_ca_names(STACK_OF(X509_NAME
) **dst
, STACK_OF(X509_NAME
) *src
)
3815 STACK_OF(X509_NAME
) *sk
;
3824 if ((sk
= sk_X509_NAME_new_null()) == NULL
)
3826 for (i
= 0; i
< sk_X509_NAME_num(src
); i
++) {
3827 xn
= X509_NAME_dup(sk_X509_NAME_value(src
, i
));
3829 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3832 if (sk_X509_NAME_insert(sk
, xn
, i
) == 0) {
3834 sk_X509_NAME_pop_free(sk
, X509_NAME_free
);
3843 SSL
*SSL_dup(SSL
*s
)
3848 /* If we're not quiescent, just up_ref! */
3849 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3850 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3855 * Otherwise, copy configuration state, and session if set.
3857 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3860 if (s
->session
!= NULL
) {
3862 * Arranges to share the same session via up_ref. This "copies"
3863 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3865 if (!SSL_copy_session_id(ret
, s
))
3869 * No session has been established yet, so we have to expect that
3870 * s->cert or ret->cert will be changed later -- they should not both
3871 * point to the same object, and thus we can't use
3872 * SSL_copy_session_id.
3874 if (!SSL_set_ssl_method(ret
, s
->method
))
3877 if (s
->cert
!= NULL
) {
3878 ssl_cert_free(ret
->cert
);
3879 ret
->cert
= ssl_cert_dup(s
->cert
);
3880 if (ret
->cert
== NULL
)
3884 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3885 (int)s
->sid_ctx_length
))
3889 if (!ssl_dane_dup(ret
, s
))
3891 ret
->version
= s
->version
;
3892 ret
->options
= s
->options
;
3893 ret
->mode
= s
->mode
;
3894 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3895 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3896 ret
->msg_callback
= s
->msg_callback
;
3897 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3898 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3899 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3900 ret
->generate_session_id
= s
->generate_session_id
;
3902 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3904 /* copy app data, a little dangerous perhaps */
3905 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3908 /* setup rbio, and wbio */
3909 if (s
->rbio
!= NULL
) {
3910 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3913 if (s
->wbio
!= NULL
) {
3914 if (s
->wbio
!= s
->rbio
) {
3915 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3918 BIO_up_ref(ret
->rbio
);
3919 ret
->wbio
= ret
->rbio
;
3923 ret
->server
= s
->server
;
3924 if (s
->handshake_func
) {
3926 SSL_set_accept_state(ret
);
3928 SSL_set_connect_state(ret
);
3930 ret
->shutdown
= s
->shutdown
;
3933 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3934 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3936 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3938 /* dup the cipher_list and cipher_list_by_id stacks */
3939 if (s
->cipher_list
!= NULL
) {
3940 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3943 if (s
->cipher_list_by_id
!= NULL
)
3944 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3948 /* Dup the client_CA list */
3949 if (!dup_ca_names(&ret
->ca_names
, s
->ca_names
)
3950 || !dup_ca_names(&ret
->client_ca_names
, s
->client_ca_names
))
3960 void ssl_clear_cipher_ctx(SSL
*s
)
3962 if (s
->enc_read_ctx
!= NULL
) {
3963 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3964 s
->enc_read_ctx
= NULL
;
3966 if (s
->enc_write_ctx
!= NULL
) {
3967 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3968 s
->enc_write_ctx
= NULL
;
3970 #ifndef OPENSSL_NO_COMP
3971 COMP_CTX_free(s
->expand
);
3973 COMP_CTX_free(s
->compress
);
3978 X509
*SSL_get_certificate(const SSL
*s
)
3980 if (s
->cert
!= NULL
)
3981 return s
->cert
->key
->x509
;
3986 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3988 if (s
->cert
!= NULL
)
3989 return s
->cert
->key
->privatekey
;
3994 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3996 if (ctx
->cert
!= NULL
)
3997 return ctx
->cert
->key
->x509
;
4002 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
4004 if (ctx
->cert
!= NULL
)
4005 return ctx
->cert
->key
->privatekey
;
4010 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
4012 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
4013 return s
->session
->cipher
;
4017 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
4019 return s
->s3
.tmp
.new_cipher
;
4022 const COMP_METHOD
*SSL_get_current_compression(const SSL
*s
)
4024 #ifndef OPENSSL_NO_COMP
4025 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
4031 const COMP_METHOD
*SSL_get_current_expansion(const SSL
*s
)
4033 #ifndef OPENSSL_NO_COMP
4034 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
4040 int ssl_init_wbio_buffer(SSL
*s
)
4044 if (s
->bbio
!= NULL
) {
4045 /* Already buffered. */
4049 bbio
= BIO_new(BIO_f_buffer());
4050 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
4052 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
4056 s
->wbio
= BIO_push(bbio
, s
->wbio
);
4061 int ssl_free_wbio_buffer(SSL
*s
)
4063 /* callers ensure s is never null */
4064 if (s
->bbio
== NULL
)
4067 s
->wbio
= BIO_pop(s
->wbio
);
4074 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
4076 ctx
->quiet_shutdown
= mode
;
4079 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
4081 return ctx
->quiet_shutdown
;
4084 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
4086 s
->quiet_shutdown
= mode
;
4089 int SSL_get_quiet_shutdown(const SSL
*s
)
4091 return s
->quiet_shutdown
;
4094 void SSL_set_shutdown(SSL
*s
, int mode
)
4099 int SSL_get_shutdown(const SSL
*s
)
4104 int SSL_version(const SSL
*s
)
4109 int SSL_client_version(const SSL
*s
)
4111 return s
->client_version
;
4114 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
4119 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
4122 if (ssl
->ctx
== ctx
)
4125 ctx
= ssl
->session_ctx
;
4126 new_cert
= ssl_cert_dup(ctx
->cert
);
4127 if (new_cert
== NULL
) {
4131 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
4132 ssl_cert_free(new_cert
);
4136 ssl_cert_free(ssl
->cert
);
4137 ssl
->cert
= new_cert
;
4140 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4141 * so setter APIs must prevent invalid lengths from entering the system.
4143 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
4147 * If the session ID context matches that of the parent SSL_CTX,
4148 * inherit it from the new SSL_CTX as well. If however the context does
4149 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4150 * leave it unchanged.
4152 if ((ssl
->ctx
!= NULL
) &&
4153 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
4154 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
4155 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
4156 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
4159 SSL_CTX_up_ref(ctx
);
4160 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
4166 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
4168 return X509_STORE_set_default_paths(ctx
->cert_store
);
4171 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
4173 X509_LOOKUP
*lookup
;
4175 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
4178 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4180 /* Clear any errors if the default directory does not exist */
4186 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
4188 X509_LOOKUP
*lookup
;
4190 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
4194 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
4196 /* Clear any errors if the default file does not exist */
4202 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
4205 return X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
);
4208 void SSL_set_info_callback(SSL
*ssl
,
4209 void (*cb
) (const SSL
*ssl
, int type
, int val
))
4211 ssl
->info_callback
= cb
;
4215 * One compiler (Diab DCC) doesn't like argument names in returned function
4218 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
4221 return ssl
->info_callback
;
4224 void SSL_set_verify_result(SSL
*ssl
, long arg
)
4226 ssl
->verify_result
= arg
;
4229 long SSL_get_verify_result(const SSL
*ssl
)
4231 return ssl
->verify_result
;
4234 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4237 return sizeof(ssl
->s3
.client_random
);
4238 if (outlen
> sizeof(ssl
->s3
.client_random
))
4239 outlen
= sizeof(ssl
->s3
.client_random
);
4240 memcpy(out
, ssl
->s3
.client_random
, outlen
);
4244 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
4247 return sizeof(ssl
->s3
.server_random
);
4248 if (outlen
> sizeof(ssl
->s3
.server_random
))
4249 outlen
= sizeof(ssl
->s3
.server_random
);
4250 memcpy(out
, ssl
->s3
.server_random
, outlen
);
4254 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
4255 unsigned char *out
, size_t outlen
)
4258 return session
->master_key_length
;
4259 if (outlen
> session
->master_key_length
)
4260 outlen
= session
->master_key_length
;
4261 memcpy(out
, session
->master_key
, outlen
);
4265 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
4268 if (len
> sizeof(sess
->master_key
))
4271 memcpy(sess
->master_key
, in
, len
);
4272 sess
->master_key_length
= len
;
4277 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
4279 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4282 void *SSL_get_ex_data(const SSL
*s
, int idx
)
4284 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4287 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
4289 return CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
);
4292 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
4294 return CRYPTO_get_ex_data(&s
->ex_data
, idx
);
4297 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
4299 return ctx
->cert_store
;
4302 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4304 X509_STORE_free(ctx
->cert_store
);
4305 ctx
->cert_store
= store
;
4308 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
4311 X509_STORE_up_ref(store
);
4312 SSL_CTX_set_cert_store(ctx
, store
);
4315 int SSL_want(const SSL
*s
)
4321 * \brief Set the callback for generating temporary DH keys.
4322 * \param ctx the SSL context.
4323 * \param dh the callback
4326 #ifndef OPENSSL_NO_DH
4327 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
4328 DH
*(*dh
) (SSL
*ssl
, int is_export
,
4331 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4334 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
4337 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
4341 #ifndef OPENSSL_NO_PSK
4342 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
4344 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4345 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4348 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
4349 if (identity_hint
!= NULL
) {
4350 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4351 if (ctx
->cert
->psk_identity_hint
== NULL
)
4354 ctx
->cert
->psk_identity_hint
= NULL
;
4358 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
4363 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
4364 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
4367 OPENSSL_free(s
->cert
->psk_identity_hint
);
4368 if (identity_hint
!= NULL
) {
4369 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
4370 if (s
->cert
->psk_identity_hint
== NULL
)
4373 s
->cert
->psk_identity_hint
= NULL
;
4377 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4379 if (s
== NULL
|| s
->session
== NULL
)
4381 return s
->session
->psk_identity_hint
;
4384 const char *SSL_get_psk_identity(const SSL
*s
)
4386 if (s
== NULL
|| s
->session
== NULL
)
4388 return s
->session
->psk_identity
;
4391 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4393 s
->psk_client_callback
= cb
;
4396 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4398 ctx
->psk_client_callback
= cb
;
4401 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4403 s
->psk_server_callback
= cb
;
4406 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4408 ctx
->psk_server_callback
= cb
;
4412 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4414 s
->psk_find_session_cb
= cb
;
4417 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4418 SSL_psk_find_session_cb_func cb
)
4420 ctx
->psk_find_session_cb
= cb
;
4423 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4425 s
->psk_use_session_cb
= cb
;
4428 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4429 SSL_psk_use_session_cb_func cb
)
4431 ctx
->psk_use_session_cb
= cb
;
4434 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4435 void (*cb
) (int write_p
, int version
,
4436 int content_type
, const void *buf
,
4437 size_t len
, SSL
*ssl
, void *arg
))
4439 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4442 void SSL_set_msg_callback(SSL
*ssl
,
4443 void (*cb
) (int write_p
, int version
,
4444 int content_type
, const void *buf
,
4445 size_t len
, SSL
*ssl
, void *arg
))
4447 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4450 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4451 int (*cb
) (SSL
*ssl
,
4455 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4456 (void (*)(void))cb
);
4459 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4460 int (*cb
) (SSL
*ssl
,
4461 int is_forward_secure
))
4463 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4464 (void (*)(void))cb
);
4467 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4468 size_t (*cb
) (SSL
*ssl
, int type
,
4469 size_t len
, void *arg
))
4471 ctx
->record_padding_cb
= cb
;
4474 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4476 ctx
->record_padding_arg
= arg
;
4479 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX
*ctx
)
4481 return ctx
->record_padding_arg
;
4484 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4486 /* block size of 0 or 1 is basically no padding */
4487 if (block_size
== 1)
4488 ctx
->block_padding
= 0;
4489 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4490 ctx
->block_padding
= block_size
;
4496 void SSL_set_record_padding_callback(SSL
*ssl
,
4497 size_t (*cb
) (SSL
*ssl
, int type
,
4498 size_t len
, void *arg
))
4500 ssl
->record_padding_cb
= cb
;
4503 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4505 ssl
->record_padding_arg
= arg
;
4508 void *SSL_get_record_padding_callback_arg(const SSL
*ssl
)
4510 return ssl
->record_padding_arg
;
4513 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4515 /* block size of 0 or 1 is basically no padding */
4516 if (block_size
== 1)
4517 ssl
->block_padding
= 0;
4518 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4519 ssl
->block_padding
= block_size
;
4525 int SSL_set_num_tickets(SSL
*s
, size_t num_tickets
)
4527 s
->num_tickets
= num_tickets
;
4532 size_t SSL_get_num_tickets(const SSL
*s
)
4534 return s
->num_tickets
;
4537 int SSL_CTX_set_num_tickets(SSL_CTX
*ctx
, size_t num_tickets
)
4539 ctx
->num_tickets
= num_tickets
;
4544 size_t SSL_CTX_get_num_tickets(const SSL_CTX
*ctx
)
4546 return ctx
->num_tickets
;
4550 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4551 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4552 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4553 * Returns the newly allocated ctx;
4556 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4558 ssl_clear_hash_ctx(hash
);
4559 *hash
= EVP_MD_CTX_new();
4560 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4561 EVP_MD_CTX_free(*hash
);
4568 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4571 EVP_MD_CTX_free(*hash
);
4575 /* Retrieve handshake hashes */
4576 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4579 EVP_MD_CTX
*ctx
= NULL
;
4580 EVP_MD_CTX
*hdgst
= s
->s3
.handshake_dgst
;
4581 int hashleni
= EVP_MD_CTX_size(hdgst
);
4584 if (hashleni
< 0 || (size_t)hashleni
> outlen
) {
4585 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4586 ERR_R_INTERNAL_ERROR
);
4590 ctx
= EVP_MD_CTX_new();
4594 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4595 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0) {
4596 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_HANDSHAKE_HASH
,
4597 ERR_R_INTERNAL_ERROR
);
4601 *hashlen
= hashleni
;
4605 EVP_MD_CTX_free(ctx
);
4609 int SSL_session_reused(const SSL
*s
)
4614 int SSL_is_server(const SSL
*s
)
4619 #if !OPENSSL_API_1_1_0
4620 void SSL_set_debug(SSL
*s
, int debug
)
4622 /* Old function was do-nothing anyway... */
4628 void SSL_set_security_level(SSL
*s
, int level
)
4630 s
->cert
->sec_level
= level
;
4633 int SSL_get_security_level(const SSL
*s
)
4635 return s
->cert
->sec_level
;
4638 void SSL_set_security_callback(SSL
*s
,
4639 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4640 int op
, int bits
, int nid
,
4641 void *other
, void *ex
))
4643 s
->cert
->sec_cb
= cb
;
4646 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4647 const SSL_CTX
*ctx
, int op
,
4648 int bits
, int nid
, void *other
,
4650 return s
->cert
->sec_cb
;
4653 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4655 s
->cert
->sec_ex
= ex
;
4658 void *SSL_get0_security_ex_data(const SSL
*s
)
4660 return s
->cert
->sec_ex
;
4663 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4665 ctx
->cert
->sec_level
= level
;
4668 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4670 return ctx
->cert
->sec_level
;
4673 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4674 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4675 int op
, int bits
, int nid
,
4676 void *other
, void *ex
))
4678 ctx
->cert
->sec_cb
= cb
;
4681 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4687 return ctx
->cert
->sec_cb
;
4690 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4692 ctx
->cert
->sec_ex
= ex
;
4695 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4697 return ctx
->cert
->sec_ex
;
4701 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4702 * can return unsigned long, instead of the generic long return value from the
4703 * control interface.
4705 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4707 return ctx
->options
;
4710 unsigned long SSL_get_options(const SSL
*s
)
4715 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4717 return ctx
->options
|= op
;
4720 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4722 return s
->options
|= op
;
4725 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4727 return ctx
->options
&= ~op
;
4730 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4732 return s
->options
&= ~op
;
4735 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4737 return s
->verified_chain
;
4740 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4742 #ifndef OPENSSL_NO_CT
4745 * Moves SCTs from the |src| stack to the |dst| stack.
4746 * The source of each SCT will be set to |origin|.
4747 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4749 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4751 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4752 sct_source_t origin
)
4758 *dst
= sk_SCT_new_null();
4760 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4765 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4766 if (SCT_set_source(sct
, origin
) != 1)
4769 if (sk_SCT_push(*dst
, sct
) <= 0)
4777 sk_SCT_push(src
, sct
); /* Put the SCT back */
4782 * Look for data collected during ServerHello and parse if found.
4783 * Returns the number of SCTs extracted.
4785 static int ct_extract_tls_extension_scts(SSL
*s
)
4787 int scts_extracted
= 0;
4789 if (s
->ext
.scts
!= NULL
) {
4790 const unsigned char *p
= s
->ext
.scts
;
4791 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4793 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4795 SCT_LIST_free(scts
);
4798 return scts_extracted
;
4802 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4803 * contains an SCT X509 extension. They will be stored in |s->scts|.
4805 * - The number of SCTs extracted, assuming an OCSP response exists.
4806 * - 0 if no OCSP response exists or it contains no SCTs.
4807 * - A negative integer if an error occurs.
4809 static int ct_extract_ocsp_response_scts(SSL
*s
)
4811 # ifndef OPENSSL_NO_OCSP
4812 int scts_extracted
= 0;
4813 const unsigned char *p
;
4814 OCSP_BASICRESP
*br
= NULL
;
4815 OCSP_RESPONSE
*rsp
= NULL
;
4816 STACK_OF(SCT
) *scts
= NULL
;
4819 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4822 p
= s
->ext
.ocsp
.resp
;
4823 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4827 br
= OCSP_response_get1_basic(rsp
);
4831 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4832 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4838 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4840 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4841 if (scts_extracted
< 0)
4845 SCT_LIST_free(scts
);
4846 OCSP_BASICRESP_free(br
);
4847 OCSP_RESPONSE_free(rsp
);
4848 return scts_extracted
;
4850 /* Behave as if no OCSP response exists */
4856 * Attempts to extract SCTs from the peer certificate.
4857 * Return the number of SCTs extracted, or a negative integer if an error
4860 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4862 int scts_extracted
= 0;
4863 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4866 STACK_OF(SCT
) *scts
=
4867 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4870 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4872 SCT_LIST_free(scts
);
4875 return scts_extracted
;
4879 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4880 * response (if it exists) and X509v3 extensions in the certificate.
4881 * Returns NULL if an error occurs.
4883 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4885 if (!s
->scts_parsed
) {
4886 if (ct_extract_tls_extension_scts(s
) < 0 ||
4887 ct_extract_ocsp_response_scts(s
) < 0 ||
4888 ct_extract_x509v3_extension_scts(s
) < 0)
4898 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4899 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4904 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4905 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4907 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4910 for (i
= 0; i
< count
; ++i
) {
4911 SCT
*sct
= sk_SCT_value(scts
, i
);
4912 int status
= SCT_get_validation_status(sct
);
4914 if (status
== SCT_VALIDATION_STATUS_VALID
)
4917 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4921 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4925 * Since code exists that uses the custom extension handler for CT, look
4926 * for this and throw an error if they have already registered to use CT.
4928 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4929 TLSEXT_TYPE_signed_certificate_timestamp
))
4931 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4932 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4936 if (callback
!= NULL
) {
4938 * If we are validating CT, then we MUST accept SCTs served via OCSP
4940 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4944 s
->ct_validation_callback
= callback
;
4945 s
->ct_validation_callback_arg
= arg
;
4950 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4951 ssl_ct_validation_cb callback
, void *arg
)
4954 * Since code exists that uses the custom extension handler for CT, look for
4955 * this and throw an error if they have already registered to use CT.
4957 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4958 TLSEXT_TYPE_signed_certificate_timestamp
))
4960 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4961 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4965 ctx
->ct_validation_callback
= callback
;
4966 ctx
->ct_validation_callback_arg
= arg
;
4970 int SSL_ct_is_enabled(const SSL
*s
)
4972 return s
->ct_validation_callback
!= NULL
;
4975 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4977 return ctx
->ct_validation_callback
!= NULL
;
4980 int ssl_validate_ct(SSL
*s
)
4983 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4985 SSL_DANE
*dane
= &s
->dane
;
4986 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4987 const STACK_OF(SCT
) *scts
;
4990 * If no callback is set, the peer is anonymous, or its chain is invalid,
4991 * skip SCT validation - just return success. Applications that continue
4992 * handshakes without certificates, with unverified chains, or pinned leaf
4993 * certificates are outside the scope of the WebPKI and CT.
4995 * The above exclusions notwithstanding the vast majority of peers will
4996 * have rather ordinary certificate chains validated by typical
4997 * applications that perform certificate verification and therefore will
4998 * process SCTs when enabled.
5000 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
5001 s
->verify_result
!= X509_V_OK
||
5002 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
5006 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5007 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5009 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
5010 switch (dane
->mtlsa
->usage
) {
5011 case DANETLS_USAGE_DANE_TA
:
5012 case DANETLS_USAGE_DANE_EE
:
5017 ctx
= CT_POLICY_EVAL_CTX_new();
5019 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_VALIDATE_CT
,
5020 ERR_R_MALLOC_FAILURE
);
5024 issuer
= sk_X509_value(s
->verified_chain
, 1);
5025 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
5026 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
5027 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
5028 CT_POLICY_EVAL_CTX_set_time(
5029 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
5031 scts
= SSL_get0_peer_scts(s
);
5034 * This function returns success (> 0) only when all the SCTs are valid, 0
5035 * when some are invalid, and < 0 on various internal errors (out of
5036 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5037 * reason to abort the handshake, that decision is up to the callback.
5038 * Therefore, we error out only in the unexpected case that the return
5039 * value is negative.
5041 * XXX: One might well argue that the return value of this function is an
5042 * unfortunate design choice. Its job is only to determine the validation
5043 * status of each of the provided SCTs. So long as it correctly separates
5044 * the wheat from the chaff it should return success. Failure in this case
5045 * ought to correspond to an inability to carry out its duties.
5047 if (SCT_LIST_validate(scts
, ctx
) < 0) {
5048 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5049 SSL_R_SCT_VERIFICATION_FAILED
);
5053 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
5055 ret
= 0; /* This function returns 0 on failure */
5057 SSLfatal(s
, SSL_AD_HANDSHAKE_FAILURE
, SSL_F_SSL_VALIDATE_CT
,
5058 SSL_R_CALLBACK_FAILED
);
5061 CT_POLICY_EVAL_CTX_free(ctx
);
5063 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5064 * failure return code here. Also the application may wish the complete
5065 * the handshake, and then disconnect cleanly at a higher layer, after
5066 * checking the verification status of the completed connection.
5068 * We therefore force a certificate verification failure which will be
5069 * visible via SSL_get_verify_result() and cached as part of any resumed
5072 * Note: the permissive callback is for information gathering only, always
5073 * returns success, and does not affect verification status. Only the
5074 * strict callback or a custom application-specified callback can trigger
5075 * connection failure or record a verification error.
5078 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
5082 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
5084 switch (validation_mode
) {
5086 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5088 case SSL_CT_VALIDATION_PERMISSIVE
:
5089 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
5090 case SSL_CT_VALIDATION_STRICT
:
5091 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
5095 int SSL_enable_ct(SSL
*s
, int validation_mode
)
5097 switch (validation_mode
) {
5099 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
5101 case SSL_CT_VALIDATION_PERMISSIVE
:
5102 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
5103 case SSL_CT_VALIDATION_STRICT
:
5104 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
5108 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
5110 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
5113 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
5115 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
5118 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
5120 CTLOG_STORE_free(ctx
->ctlog_store
);
5121 ctx
->ctlog_store
= logs
;
5124 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
5126 return ctx
->ctlog_store
;
5129 #endif /* OPENSSL_NO_CT */
5131 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
5134 c
->client_hello_cb
= cb
;
5135 c
->client_hello_cb_arg
= arg
;
5138 int SSL_client_hello_isv2(SSL
*s
)
5140 if (s
->clienthello
== NULL
)
5142 return s
->clienthello
->isv2
;
5145 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
5147 if (s
->clienthello
== NULL
)
5149 return s
->clienthello
->legacy_version
;
5152 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
5154 if (s
->clienthello
== NULL
)
5157 *out
= s
->clienthello
->random
;
5158 return SSL3_RANDOM_SIZE
;
5161 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
5163 if (s
->clienthello
== NULL
)
5166 *out
= s
->clienthello
->session_id
;
5167 return s
->clienthello
->session_id_len
;
5170 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
5172 if (s
->clienthello
== NULL
)
5175 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
5176 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
5179 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
5181 if (s
->clienthello
== NULL
)
5184 *out
= s
->clienthello
->compressions
;
5185 return s
->clienthello
->compressions_len
;
5188 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
5194 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
5196 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5197 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5206 if ((present
= OPENSSL_malloc(sizeof(*present
) * num
)) == NULL
) {
5207 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT
,
5208 ERR_R_MALLOC_FAILURE
);
5211 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
5212 ext
= s
->clienthello
->pre_proc_exts
+ i
;
5214 if (ext
->received_order
>= num
)
5216 present
[ext
->received_order
] = ext
->type
;
5223 OPENSSL_free(present
);
5227 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
5233 if (s
->clienthello
== NULL
)
5235 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
5236 r
= s
->clienthello
->pre_proc_exts
+ i
;
5237 if (r
->present
&& r
->type
== type
) {
5239 *out
= PACKET_data(&r
->data
);
5241 *outlen
= PACKET_remaining(&r
->data
);
5248 int SSL_free_buffers(SSL
*ssl
)
5250 RECORD_LAYER
*rl
= &ssl
->rlayer
;
5252 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
5255 RECORD_LAYER_release(rl
);
5259 int SSL_alloc_buffers(SSL
*ssl
)
5261 return ssl3_setup_buffers(ssl
);
5264 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
5266 ctx
->keylog_callback
= cb
;
5269 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
5271 return ctx
->keylog_callback
;
5274 static int nss_keylog_int(const char *prefix
,
5276 const uint8_t *parameter_1
,
5277 size_t parameter_1_len
,
5278 const uint8_t *parameter_2
,
5279 size_t parameter_2_len
)
5282 char *cursor
= NULL
;
5287 if (ssl
->ctx
->keylog_callback
== NULL
)
5291 * Our output buffer will contain the following strings, rendered with
5292 * space characters in between, terminated by a NULL character: first the
5293 * prefix, then the first parameter, then the second parameter. The
5294 * meaning of each parameter depends on the specific key material being
5295 * logged. Note that the first and second parameters are encoded in
5296 * hexadecimal, so we need a buffer that is twice their lengths.
5298 prefix_len
= strlen(prefix
);
5299 out_len
= prefix_len
+ (2 * parameter_1_len
) + (2 * parameter_2_len
) + 3;
5300 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
5301 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
, SSL_F_NSS_KEYLOG_INT
,
5302 ERR_R_MALLOC_FAILURE
);
5306 strcpy(cursor
, prefix
);
5307 cursor
+= prefix_len
;
5310 for (i
= 0; i
< parameter_1_len
; i
++) {
5311 sprintf(cursor
, "%02x", parameter_1
[i
]);
5316 for (i
= 0; i
< parameter_2_len
; i
++) {
5317 sprintf(cursor
, "%02x", parameter_2
[i
]);
5322 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
5323 OPENSSL_clear_free(out
, out_len
);
5328 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
5329 const uint8_t *encrypted_premaster
,
5330 size_t encrypted_premaster_len
,
5331 const uint8_t *premaster
,
5332 size_t premaster_len
)
5334 if (encrypted_premaster_len
< 8) {
5335 SSLfatal(ssl
, SSL_AD_INTERNAL_ERROR
,
5336 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
5340 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5341 return nss_keylog_int("RSA",
5343 encrypted_premaster
,
5349 int ssl_log_secret(SSL
*ssl
,
5351 const uint8_t *secret
,
5354 return nss_keylog_int(label
,
5356 ssl
->s3
.client_random
,
5362 #define SSLV2_CIPHER_LEN 3
5364 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
)
5368 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5370 if (PACKET_remaining(cipher_suites
) == 0) {
5371 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_SSL_CACHE_CIPHERLIST
,
5372 SSL_R_NO_CIPHERS_SPECIFIED
);
5376 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5377 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5378 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5382 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5383 s
->s3
.tmp
.ciphers_raw
= NULL
;
5384 s
->s3
.tmp
.ciphers_rawlen
= 0;
5387 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
5388 PACKET sslv2ciphers
= *cipher_suites
;
5389 unsigned int leadbyte
;
5393 * We store the raw ciphers list in SSLv3+ format so we need to do some
5394 * preprocessing to convert the list first. If there are any SSLv2 only
5395 * ciphersuites with a non-zero leading byte then we are going to
5396 * slightly over allocate because we won't store those. But that isn't a
5399 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
5400 s
->s3
.tmp
.ciphers_raw
= raw
;
5402 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5403 ERR_R_MALLOC_FAILURE
);
5406 for (s
->s3
.tmp
.ciphers_rawlen
= 0;
5407 PACKET_remaining(&sslv2ciphers
) > 0;
5408 raw
+= TLS_CIPHER_LEN
) {
5409 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
5411 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
5414 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
5415 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5417 OPENSSL_free(s
->s3
.tmp
.ciphers_raw
);
5418 s
->s3
.tmp
.ciphers_raw
= NULL
;
5419 s
->s3
.tmp
.ciphers_rawlen
= 0;
5423 s
->s3
.tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5425 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
.tmp
.ciphers_raw
,
5426 &s
->s3
.tmp
.ciphers_rawlen
)) {
5427 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_SSL_CACHE_CIPHERLIST
,
5428 ERR_R_INTERNAL_ERROR
);
5434 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5435 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5436 STACK_OF(SSL_CIPHER
) **scsvs
)
5440 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5442 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, 0);
5445 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5446 STACK_OF(SSL_CIPHER
) **skp
,
5447 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5448 int sslv2format
, int fatal
)
5450 const SSL_CIPHER
*c
;
5451 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5452 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5454 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5455 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5457 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5459 if (PACKET_remaining(cipher_suites
) == 0) {
5461 SSLfatal(s
, SSL_AD_ILLEGAL_PARAMETER
, SSL_F_BYTES_TO_CIPHER_LIST
,
5462 SSL_R_NO_CIPHERS_SPECIFIED
);
5464 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5468 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5470 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5471 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5473 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5474 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5478 sk
= sk_SSL_CIPHER_new_null();
5479 scsvs
= sk_SSL_CIPHER_new_null();
5480 if (sk
== NULL
|| scsvs
== NULL
) {
5482 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5483 ERR_R_MALLOC_FAILURE
);
5485 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5489 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5491 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5492 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5493 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5495 if (sslv2format
&& cipher
[0] != '\0')
5498 /* For SSLv2-compat, ignore leading 0-byte. */
5499 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5501 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5502 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5504 SSLfatal(s
, SSL_AD_INTERNAL_ERROR
,
5505 SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5507 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5512 if (PACKET_remaining(cipher_suites
) > 0) {
5514 SSLfatal(s
, SSL_AD_DECODE_ERROR
, SSL_F_BYTES_TO_CIPHER_LIST
,
5517 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5524 sk_SSL_CIPHER_free(sk
);
5525 if (scsvs_out
!= NULL
)
5528 sk_SSL_CIPHER_free(scsvs
);
5531 sk_SSL_CIPHER_free(sk
);
5532 sk_SSL_CIPHER_free(scsvs
);
5536 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5538 ctx
->max_early_data
= max_early_data
;
5543 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5545 return ctx
->max_early_data
;
5548 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5550 s
->max_early_data
= max_early_data
;
5555 uint32_t SSL_get_max_early_data(const SSL
*s
)
5557 return s
->max_early_data
;
5560 int SSL_CTX_set_recv_max_early_data(SSL_CTX
*ctx
, uint32_t recv_max_early_data
)
5562 ctx
->recv_max_early_data
= recv_max_early_data
;
5567 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX
*ctx
)
5569 return ctx
->recv_max_early_data
;
5572 int SSL_set_recv_max_early_data(SSL
*s
, uint32_t recv_max_early_data
)
5574 s
->recv_max_early_data
= recv_max_early_data
;
5579 uint32_t SSL_get_recv_max_early_data(const SSL
*s
)
5581 return s
->recv_max_early_data
;
5584 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
)
5586 /* Return any active Max Fragment Len extension */
5587 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
))
5588 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5590 /* return current SSL connection setting */
5591 return ssl
->max_send_fragment
;
5594 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
)
5596 /* Return a value regarding an active Max Fragment Len extension */
5597 if (ssl
->session
!= NULL
&& USE_MAX_FRAGMENT_LENGTH_EXT(ssl
->session
)
5598 && ssl
->split_send_fragment
> GET_MAX_FRAGMENT_LENGTH(ssl
->session
))
5599 return GET_MAX_FRAGMENT_LENGTH(ssl
->session
);
5601 /* else limit |split_send_fragment| to current |max_send_fragment| */
5602 if (ssl
->split_send_fragment
> ssl
->max_send_fragment
)
5603 return ssl
->max_send_fragment
;
5605 /* return current SSL connection setting */
5606 return ssl
->split_send_fragment
;
5609 int SSL_stateless(SSL
*s
)
5613 /* Ensure there is no state left over from a previous invocation */
5619 s
->s3
.flags
|= TLS1_FLAGS_STATELESS
;
5620 ret
= SSL_accept(s
);
5621 s
->s3
.flags
&= ~TLS1_FLAGS_STATELESS
;
5623 if (ret
> 0 && s
->ext
.cookieok
)
5626 if (s
->hello_retry_request
== SSL_HRR_PENDING
&& !ossl_statem_in_error(s
))
5632 void SSL_CTX_set_post_handshake_auth(SSL_CTX
*ctx
, int val
)
5634 ctx
->pha_enabled
= val
;
5637 void SSL_set_post_handshake_auth(SSL
*ssl
, int val
)
5639 ssl
->pha_enabled
= val
;
5642 int SSL_verify_client_post_handshake(SSL
*ssl
)
5644 if (!SSL_IS_TLS13(ssl
)) {
5645 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_WRONG_SSL_VERSION
);
5649 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_NOT_SERVER
);
5653 if (!SSL_is_init_finished(ssl
)) {
5654 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_STILL_IN_INIT
);
5658 switch (ssl
->post_handshake_auth
) {
5660 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_EXTENSION_NOT_RECEIVED
);
5663 case SSL_PHA_EXT_SENT
:
5664 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, ERR_R_INTERNAL_ERROR
);
5666 case SSL_PHA_EXT_RECEIVED
:
5668 case SSL_PHA_REQUEST_PENDING
:
5669 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_PENDING
);
5671 case SSL_PHA_REQUESTED
:
5672 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_REQUEST_SENT
);
5676 ssl
->post_handshake_auth
= SSL_PHA_REQUEST_PENDING
;
5678 /* checks verify_mode and algorithm_auth */
5679 if (!send_certificate_request(ssl
)) {
5680 ssl
->post_handshake_auth
= SSL_PHA_EXT_RECEIVED
; /* restore on error */
5681 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE
, SSL_R_INVALID_CONFIG
);
5685 ossl_statem_set_in_init(ssl
, 1);
5689 int SSL_CTX_set_session_ticket_cb(SSL_CTX
*ctx
,
5690 SSL_CTX_generate_session_ticket_fn gen_cb
,
5691 SSL_CTX_decrypt_session_ticket_fn dec_cb
,
5694 ctx
->generate_ticket_cb
= gen_cb
;
5695 ctx
->decrypt_ticket_cb
= dec_cb
;
5696 ctx
->ticket_cb_data
= arg
;
5700 void SSL_CTX_set_allow_early_data_cb(SSL_CTX
*ctx
,
5701 SSL_allow_early_data_cb_fn cb
,
5704 ctx
->allow_early_data_cb
= cb
;
5705 ctx
->allow_early_data_cb_data
= arg
;
5708 void SSL_set_allow_early_data_cb(SSL
*s
,
5709 SSL_allow_early_data_cb_fn cb
,
5712 s
->allow_early_data_cb
= cb
;
5713 s
->allow_early_data_cb_data
= arg
;