2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/rand.h>
17 #include <openssl/ocsp.h>
18 #include <openssl/dh.h>
19 #include <openssl/engine.h>
20 #include <openssl/async.h>
21 #include <openssl/ct.h>
22 #include "internal/cryptlib.h"
23 #include "internal/rand.h"
24 #include "internal/refcount.h"
26 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
28 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
30 * evil casts, but these functions are only called if there's a library
33 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
34 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
35 ssl_undefined_function
,
36 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
37 ssl_undefined_function
,
38 (int (*)(SSL
*, int))ssl_undefined_function
,
39 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
40 ssl_undefined_function
,
41 NULL
, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL
, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function
,
46 (int (*)(SSL
*, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context
))ssl_undefined_function
,
51 struct ssl_async_args
{
55 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
57 int (*func_read
) (SSL
*, void *, size_t, size_t *);
58 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
59 int (*func_other
) (SSL
*);
69 DANETLS_MATCHING_FULL
, 0, NID_undef
72 DANETLS_MATCHING_2256
, 1, NID_sha256
75 DANETLS_MATCHING_2512
, 2, NID_sha512
79 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
83 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
84 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
87 if (dctx
->mdevp
!= NULL
)
90 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
91 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
93 if (mdord
== NULL
|| mdevp
== NULL
) {
96 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
100 /* Install default entries */
101 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
104 if (dane_mds
[i
].nid
== NID_undef
||
105 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
107 mdevp
[dane_mds
[i
].mtype
] = md
;
108 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
118 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
120 OPENSSL_free(dctx
->mdevp
);
123 OPENSSL_free(dctx
->mdord
);
128 static void tlsa_free(danetls_record
*t
)
132 OPENSSL_free(t
->data
);
133 EVP_PKEY_free(t
->spki
);
137 static void dane_final(SSL_DANE
*dane
)
139 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
142 sk_X509_pop_free(dane
->certs
, X509_free
);
145 X509_free(dane
->mcert
);
153 * dane_copy - Copy dane configuration, sans verification state.
155 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
160 if (!DANETLS_ENABLED(&from
->dane
))
163 num
= sk_danetls_record_num(from
->dane
.trecs
);
164 dane_final(&to
->dane
);
165 to
->dane
.flags
= from
->dane
.flags
;
166 to
->dane
.dctx
= &to
->ctx
->dane
;
167 to
->dane
.trecs
= sk_danetls_record_new_null();
169 if (to
->dane
.trecs
== NULL
) {
170 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
173 if (!sk_danetls_record_reserve(to
->dane
.trecs
, num
))
176 for (i
= 0; i
< num
; ++i
) {
177 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
179 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
180 t
->data
, t
->dlen
) <= 0)
186 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
187 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
191 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
192 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
196 if (mtype
> dctx
->mdmax
) {
197 const EVP_MD
**mdevp
;
199 int n
= ((int)mtype
) + 1;
201 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
203 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
208 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
210 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
215 /* Zero-fill any gaps */
216 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
224 dctx
->mdevp
[mtype
] = md
;
225 /* Coerce ordinal of disabled matching types to 0 */
226 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
231 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
233 if (mtype
> dane
->dctx
->mdmax
)
235 return dane
->dctx
->mdevp
[mtype
];
238 static int dane_tlsa_add(SSL_DANE
*dane
,
241 uint8_t mtype
, unsigned char *data
, size_t dlen
)
244 const EVP_MD
*md
= NULL
;
245 int ilen
= (int)dlen
;
249 if (dane
->trecs
== NULL
) {
250 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
254 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
255 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
259 if (usage
> DANETLS_USAGE_LAST
) {
260 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
264 if (selector
> DANETLS_SELECTOR_LAST
) {
265 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
269 if (mtype
!= DANETLS_MATCHING_FULL
) {
270 md
= tlsa_md_get(dane
, mtype
);
272 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
277 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
278 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
282 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
286 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
287 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
292 t
->selector
= selector
;
294 t
->data
= OPENSSL_malloc(dlen
);
295 if (t
->data
== NULL
) {
297 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
300 memcpy(t
->data
, data
, dlen
);
303 /* Validate and cache full certificate or public key */
304 if (mtype
== DANETLS_MATCHING_FULL
) {
305 const unsigned char *p
= data
;
307 EVP_PKEY
*pkey
= NULL
;
310 case DANETLS_SELECTOR_CERT
:
311 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
312 dlen
!= (size_t)(p
- data
)) {
314 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
317 if (X509_get0_pubkey(cert
) == NULL
) {
319 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
323 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
329 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
330 * records that contain full certificates of trust-anchors that are
331 * not present in the wire chain. For usage PKIX-TA(0), we augment
332 * the chain with untrusted Full(0) certificates from DNS, in case
333 * they are missing from the chain.
335 if ((dane
->certs
== NULL
&&
336 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
337 !sk_X509_push(dane
->certs
, cert
)) {
338 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
345 case DANETLS_SELECTOR_SPKI
:
346 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
347 dlen
!= (size_t)(p
- data
)) {
349 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
354 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
355 * records that contain full bare keys of trust-anchors that are
356 * not present in the wire chain.
358 if (usage
== DANETLS_USAGE_DANE_TA
)
367 * Find the right insertion point for the new record.
369 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
370 * they can be processed first, as they require no chain building, and no
371 * expiration or hostname checks. Because DANE-EE(3) is numerically
372 * largest, this is accomplished via descending sort by "usage".
374 * We also sort in descending order by matching ordinal to simplify
375 * the implementation of digest agility in the verification code.
377 * The choice of order for the selector is not significant, so we
378 * use the same descending order for consistency.
380 num
= sk_danetls_record_num(dane
->trecs
);
381 for (i
= 0; i
< num
; ++i
) {
382 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
384 if (rec
->usage
> usage
)
386 if (rec
->usage
< usage
)
388 if (rec
->selector
> selector
)
390 if (rec
->selector
< selector
)
392 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
397 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
399 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
402 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
408 * Return 0 if there is only one version configured and it was disabled
409 * at configure time. Return 1 otherwise.
411 static int ssl_check_allowed_versions(int min_version
, int max_version
)
413 int minisdtls
= 0, maxisdtls
= 0;
415 /* Figure out if we're doing DTLS versions or TLS versions */
416 if (min_version
== DTLS1_BAD_VER
417 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
419 if (max_version
== DTLS1_BAD_VER
420 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
422 /* A wildcard version of 0 could be DTLS or TLS. */
423 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
424 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
425 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
429 if (minisdtls
|| maxisdtls
) {
430 /* Do DTLS version checks. */
431 if (min_version
== 0)
432 /* Ignore DTLS1_BAD_VER */
433 min_version
= DTLS1_VERSION
;
434 if (max_version
== 0)
435 max_version
= DTLS1_2_VERSION
;
436 #ifdef OPENSSL_NO_DTLS1_2
437 if (max_version
== DTLS1_2_VERSION
)
438 max_version
= DTLS1_VERSION
;
440 #ifdef OPENSSL_NO_DTLS1
441 if (min_version
== DTLS1_VERSION
)
442 min_version
= DTLS1_2_VERSION
;
444 /* Done massaging versions; do the check. */
446 #ifdef OPENSSL_NO_DTLS1
447 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
448 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
450 #ifdef OPENSSL_NO_DTLS1_2
451 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
452 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
457 /* Regular TLS version checks. */
458 if (min_version
== 0)
459 min_version
= SSL3_VERSION
;
460 if (max_version
== 0)
461 max_version
= TLS1_3_VERSION
;
462 #ifdef OPENSSL_NO_TLS1_3
463 if (max_version
== TLS1_3_VERSION
)
464 max_version
= TLS1_2_VERSION
;
466 #ifdef OPENSSL_NO_TLS1_2
467 if (max_version
== TLS1_2_VERSION
)
468 max_version
= TLS1_1_VERSION
;
470 #ifdef OPENSSL_NO_TLS1_1
471 if (max_version
== TLS1_1_VERSION
)
472 max_version
= TLS1_VERSION
;
474 #ifdef OPENSSL_NO_TLS1
475 if (max_version
== TLS1_VERSION
)
476 max_version
= SSL3_VERSION
;
478 #ifdef OPENSSL_NO_SSL3
479 if (min_version
== SSL3_VERSION
)
480 min_version
= TLS1_VERSION
;
482 #ifdef OPENSSL_NO_TLS1
483 if (min_version
== TLS1_VERSION
)
484 min_version
= TLS1_1_VERSION
;
486 #ifdef OPENSSL_NO_TLS1_1
487 if (min_version
== TLS1_1_VERSION
)
488 min_version
= TLS1_2_VERSION
;
490 #ifdef OPENSSL_NO_TLS1_2
491 if (min_version
== TLS1_2_VERSION
)
492 min_version
= TLS1_3_VERSION
;
494 /* Done massaging versions; do the check. */
496 #ifdef OPENSSL_NO_SSL3
497 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
499 #ifdef OPENSSL_NO_TLS1
500 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
502 #ifdef OPENSSL_NO_TLS1_1
503 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
505 #ifdef OPENSSL_NO_TLS1_2
506 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
508 #ifdef OPENSSL_NO_TLS1_3
509 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
517 static void clear_ciphers(SSL
*s
)
519 /* clear the current cipher */
520 ssl_clear_cipher_ctx(s
);
521 ssl_clear_hash_ctx(&s
->read_hash
);
522 ssl_clear_hash_ctx(&s
->write_hash
);
525 int SSL_clear(SSL
*s
)
527 if (s
->method
== NULL
) {
528 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
532 if (ssl_clear_bad_session(s
)) {
533 SSL_SESSION_free(s
->session
);
536 SSL_SESSION_free(s
->psksession
);
537 s
->psksession
= NULL
;
538 OPENSSL_free(s
->psksession_id
);
539 s
->psksession_id
= NULL
;
540 s
->psksession_id_len
= 0;
546 if (s
->renegotiate
) {
547 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
551 ossl_statem_clear(s
);
553 s
->version
= s
->method
->version
;
554 s
->client_version
= s
->version
;
555 s
->rwstate
= SSL_NOTHING
;
557 BUF_MEM_free(s
->init_buf
);
562 s
->key_update
= SSL_KEY_UPDATE_NONE
;
564 /* Reset DANE verification result state */
567 X509_free(s
->dane
.mcert
);
568 s
->dane
.mcert
= NULL
;
569 s
->dane
.mtlsa
= NULL
;
571 /* Clear the verification result peername */
572 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
575 * Check to see if we were changed into a different method, if so, revert
578 if (s
->method
!= s
->ctx
->method
) {
579 s
->method
->ssl_free(s
);
580 s
->method
= s
->ctx
->method
;
581 if (!s
->method
->ssl_new(s
))
584 if (!s
->method
->ssl_clear(s
))
588 RECORD_LAYER_clear(&s
->rlayer
);
593 /** Used to change an SSL_CTXs default SSL method type */
594 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
596 STACK_OF(SSL_CIPHER
) *sk
;
600 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
601 &(ctx
->cipher_list_by_id
),
602 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
603 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
604 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
610 SSL
*SSL_new(SSL_CTX
*ctx
)
615 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
618 if (ctx
->method
== NULL
) {
619 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
623 s
= OPENSSL_zalloc(sizeof(*s
));
627 s
->lock
= CRYPTO_THREAD_lock_new();
632 * If not using the standard RAND (say for fuzzing), then don't use a
635 if (RAND_get_rand_method() == RAND_OpenSSL()) {
637 RAND_DRBG_new(RAND_DRBG_NID
, RAND_DRBG_FLAG_CTR_USE_DF
,
638 RAND_DRBG_get0_global());
640 || RAND_DRBG_instantiate(s
->drbg
,
641 (const unsigned char *) SSL_version_str
,
642 sizeof(SSL_version_str
) - 1) == 0) {
643 CRYPTO_THREAD_lock_free(s
->lock
);
648 RECORD_LAYER_init(&s
->rlayer
, s
);
650 s
->options
= ctx
->options
;
651 s
->dane
.flags
= ctx
->dane
.flags
;
652 s
->min_proto_version
= ctx
->min_proto_version
;
653 s
->max_proto_version
= ctx
->max_proto_version
;
655 s
->max_cert_list
= ctx
->max_cert_list
;
657 s
->max_early_data
= ctx
->max_early_data
;
660 * Earlier library versions used to copy the pointer to the CERT, not
661 * its contents; only when setting new parameters for the per-SSL
662 * copy, ssl_cert_new would be called (and the direct reference to
663 * the per-SSL_CTX settings would be lost, but those still were
664 * indirectly accessed for various purposes, and for that reason they
665 * used to be known as s->ctx->default_cert). Now we don't look at the
666 * SSL_CTX's CERT after having duplicated it once.
668 s
->cert
= ssl_cert_dup(ctx
->cert
);
672 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
673 s
->msg_callback
= ctx
->msg_callback
;
674 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
675 s
->verify_mode
= ctx
->verify_mode
;
676 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
677 s
->record_padding_cb
= ctx
->record_padding_cb
;
678 s
->record_padding_arg
= ctx
->record_padding_arg
;
679 s
->block_padding
= ctx
->block_padding
;
680 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
681 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
683 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
684 s
->verify_callback
= ctx
->default_verify_callback
;
685 s
->generate_session_id
= ctx
->generate_session_id
;
687 s
->param
= X509_VERIFY_PARAM_new();
688 if (s
->param
== NULL
)
690 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
691 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
692 s
->max_send_fragment
= ctx
->max_send_fragment
;
693 s
->split_send_fragment
= ctx
->split_send_fragment
;
694 s
->max_pipelines
= ctx
->max_pipelines
;
695 if (s
->max_pipelines
> 1)
696 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
697 if (ctx
->default_read_buf_len
> 0)
698 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
703 s
->ext
.debug_arg
= NULL
;
704 s
->ext
.ticket_expected
= 0;
705 s
->ext
.status_type
= ctx
->ext
.status_type
;
706 s
->ext
.status_expected
= 0;
707 s
->ext
.ocsp
.ids
= NULL
;
708 s
->ext
.ocsp
.exts
= NULL
;
709 s
->ext
.ocsp
.resp
= NULL
;
710 s
->ext
.ocsp
.resp_len
= 0;
712 s
->session_ctx
= ctx
;
713 #ifndef OPENSSL_NO_EC
714 if (ctx
->ext
.ecpointformats
) {
715 s
->ext
.ecpointformats
=
716 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
717 ctx
->ext
.ecpointformats_len
);
718 if (!s
->ext
.ecpointformats
)
720 s
->ext
.ecpointformats_len
=
721 ctx
->ext
.ecpointformats_len
;
723 if (ctx
->ext
.supportedgroups
) {
724 s
->ext
.supportedgroups
=
725 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
726 ctx
->ext
.supportedgroups_len
727 * sizeof(*ctx
->ext
.supportedgroups
));
728 if (!s
->ext
.supportedgroups
)
730 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
733 #ifndef OPENSSL_NO_NEXTPROTONEG
737 if (s
->ctx
->ext
.alpn
) {
738 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
739 if (s
->ext
.alpn
== NULL
)
741 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
742 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
745 s
->verified_chain
= NULL
;
746 s
->verify_result
= X509_V_OK
;
748 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
749 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
751 s
->method
= ctx
->method
;
753 s
->key_update
= SSL_KEY_UPDATE_NONE
;
755 if (!s
->method
->ssl_new(s
))
758 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
763 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
766 #ifndef OPENSSL_NO_PSK
767 s
->psk_client_callback
= ctx
->psk_client_callback
;
768 s
->psk_server_callback
= ctx
->psk_server_callback
;
770 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
771 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
775 #ifndef OPENSSL_NO_CT
776 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
777 ctx
->ct_validation_callback_arg
))
784 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
788 int SSL_is_dtls(const SSL
*s
)
790 return SSL_IS_DTLS(s
) ? 1 : 0;
793 int SSL_up_ref(SSL
*s
)
797 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
800 REF_PRINT_COUNT("SSL", s
);
801 REF_ASSERT_ISNT(i
< 2);
802 return ((i
> 1) ? 1 : 0);
805 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
806 unsigned int sid_ctx_len
)
808 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
809 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
810 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
813 ctx
->sid_ctx_length
= sid_ctx_len
;
814 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
819 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
820 unsigned int sid_ctx_len
)
822 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
823 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
824 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
827 ssl
->sid_ctx_length
= sid_ctx_len
;
828 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
833 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
835 CRYPTO_THREAD_write_lock(ctx
->lock
);
836 ctx
->generate_session_id
= cb
;
837 CRYPTO_THREAD_unlock(ctx
->lock
);
841 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
843 CRYPTO_THREAD_write_lock(ssl
->lock
);
844 ssl
->generate_session_id
= cb
;
845 CRYPTO_THREAD_unlock(ssl
->lock
);
849 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
853 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
854 * we can "construct" a session to give us the desired check - i.e. to
855 * find if there's a session in the hash table that would conflict with
856 * any new session built out of this id/id_len and the ssl_version in use
861 if (id_len
> sizeof r
.session_id
)
864 r
.ssl_version
= ssl
->version
;
865 r
.session_id_length
= id_len
;
866 memcpy(r
.session_id
, id
, id_len
);
868 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
869 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
870 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
874 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
876 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
879 int SSL_set_purpose(SSL
*s
, int purpose
)
881 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
884 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
886 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
889 int SSL_set_trust(SSL
*s
, int trust
)
891 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
894 int SSL_set1_host(SSL
*s
, const char *hostname
)
896 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
899 int SSL_add1_host(SSL
*s
, const char *hostname
)
901 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
904 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
906 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
909 const char *SSL_get0_peername(SSL
*s
)
911 return X509_VERIFY_PARAM_get0_peername(s
->param
);
914 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
916 return dane_ctx_enable(&ctx
->dane
);
919 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
921 unsigned long orig
= ctx
->dane
.flags
;
923 ctx
->dane
.flags
|= flags
;
927 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
929 unsigned long orig
= ctx
->dane
.flags
;
931 ctx
->dane
.flags
&= ~flags
;
935 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
937 SSL_DANE
*dane
= &s
->dane
;
939 if (s
->ctx
->dane
.mdmax
== 0) {
940 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
943 if (dane
->trecs
!= NULL
) {
944 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
949 * Default SNI name. This rejects empty names, while set1_host below
950 * accepts them and disables host name checks. To avoid side-effects with
951 * invalid input, set the SNI name first.
953 if (s
->ext
.hostname
== NULL
) {
954 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
955 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
960 /* Primary RFC6125 reference identifier */
961 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
962 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
968 dane
->dctx
= &s
->ctx
->dane
;
969 dane
->trecs
= sk_danetls_record_new_null();
971 if (dane
->trecs
== NULL
) {
972 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
978 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
980 unsigned long orig
= ssl
->dane
.flags
;
982 ssl
->dane
.flags
|= flags
;
986 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
988 unsigned long orig
= ssl
->dane
.flags
;
990 ssl
->dane
.flags
&= ~flags
;
994 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
996 SSL_DANE
*dane
= &s
->dane
;
998 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1002 *mcert
= dane
->mcert
;
1004 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1009 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1010 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1012 SSL_DANE
*dane
= &s
->dane
;
1014 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1018 *usage
= dane
->mtlsa
->usage
;
1020 *selector
= dane
->mtlsa
->selector
;
1022 *mtype
= dane
->mtlsa
->mtype
;
1024 *data
= dane
->mtlsa
->data
;
1026 *dlen
= dane
->mtlsa
->dlen
;
1031 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1036 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1037 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1039 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1042 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1045 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1048 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1050 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1053 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1055 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1058 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1063 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1068 void SSL_certs_clear(SSL
*s
)
1070 ssl_cert_clear_certs(s
->cert
);
1073 void SSL_free(SSL
*s
)
1080 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1081 REF_PRINT_COUNT("SSL", s
);
1084 REF_ASSERT_ISNT(i
< 0);
1086 X509_VERIFY_PARAM_free(s
->param
);
1087 dane_final(&s
->dane
);
1088 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1090 /* Ignore return value */
1091 ssl_free_wbio_buffer(s
);
1093 BIO_free_all(s
->wbio
);
1094 BIO_free_all(s
->rbio
);
1096 BUF_MEM_free(s
->init_buf
);
1098 /* add extra stuff */
1099 sk_SSL_CIPHER_free(s
->cipher_list
);
1100 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1102 /* Make the next call work :-) */
1103 if (s
->session
!= NULL
) {
1104 ssl_clear_bad_session(s
);
1105 SSL_SESSION_free(s
->session
);
1107 SSL_SESSION_free(s
->psksession
);
1108 OPENSSL_free(s
->psksession_id
);
1112 ssl_cert_free(s
->cert
);
1113 /* Free up if allocated */
1115 OPENSSL_free(s
->ext
.hostname
);
1116 SSL_CTX_free(s
->session_ctx
);
1117 #ifndef OPENSSL_NO_EC
1118 OPENSSL_free(s
->ext
.ecpointformats
);
1119 OPENSSL_free(s
->ext
.supportedgroups
);
1120 #endif /* OPENSSL_NO_EC */
1121 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1122 #ifndef OPENSSL_NO_OCSP
1123 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1125 #ifndef OPENSSL_NO_CT
1126 SCT_LIST_free(s
->scts
);
1127 OPENSSL_free(s
->ext
.scts
);
1129 OPENSSL_free(s
->ext
.ocsp
.resp
);
1130 OPENSSL_free(s
->ext
.alpn
);
1131 OPENSSL_free(s
->ext
.tls13_cookie
);
1132 OPENSSL_free(s
->clienthello
);
1134 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1136 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1138 if (s
->method
!= NULL
)
1139 s
->method
->ssl_free(s
);
1141 RECORD_LAYER_release(&s
->rlayer
);
1143 SSL_CTX_free(s
->ctx
);
1145 ASYNC_WAIT_CTX_free(s
->waitctx
);
1147 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1148 OPENSSL_free(s
->ext
.npn
);
1151 #ifndef OPENSSL_NO_SRTP
1152 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1155 RAND_DRBG_free(s
->drbg
);
1156 CRYPTO_THREAD_lock_free(s
->lock
);
1161 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1163 BIO_free_all(s
->rbio
);
1167 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1170 * If the output buffering BIO is still in place, remove it
1172 if (s
->bbio
!= NULL
)
1173 s
->wbio
= BIO_pop(s
->wbio
);
1175 BIO_free_all(s
->wbio
);
1178 /* Re-attach |bbio| to the new |wbio|. */
1179 if (s
->bbio
!= NULL
)
1180 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1183 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1186 * For historical reasons, this function has many different cases in
1187 * ownership handling.
1190 /* If nothing has changed, do nothing */
1191 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1195 * If the two arguments are equal then one fewer reference is granted by the
1196 * caller than we want to take
1198 if (rbio
!= NULL
&& rbio
== wbio
)
1202 * If only the wbio is changed only adopt one reference.
1204 if (rbio
== SSL_get_rbio(s
)) {
1205 SSL_set0_wbio(s
, wbio
);
1209 * There is an asymmetry here for historical reasons. If only the rbio is
1210 * changed AND the rbio and wbio were originally different, then we only
1211 * adopt one reference.
1213 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1214 SSL_set0_rbio(s
, rbio
);
1218 /* Otherwise, adopt both references. */
1219 SSL_set0_rbio(s
, rbio
);
1220 SSL_set0_wbio(s
, wbio
);
1223 BIO
*SSL_get_rbio(const SSL
*s
)
1228 BIO
*SSL_get_wbio(const SSL
*s
)
1230 if (s
->bbio
!= NULL
) {
1232 * If |bbio| is active, the true caller-configured BIO is its
1235 return BIO_next(s
->bbio
);
1240 int SSL_get_fd(const SSL
*s
)
1242 return SSL_get_rfd(s
);
1245 int SSL_get_rfd(const SSL
*s
)
1250 b
= SSL_get_rbio(s
);
1251 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1253 BIO_get_fd(r
, &ret
);
1257 int SSL_get_wfd(const SSL
*s
)
1262 b
= SSL_get_wbio(s
);
1263 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1265 BIO_get_fd(r
, &ret
);
1269 #ifndef OPENSSL_NO_SOCK
1270 int SSL_set_fd(SSL
*s
, int fd
)
1275 bio
= BIO_new(BIO_s_socket());
1278 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1281 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1282 SSL_set_bio(s
, bio
, bio
);
1288 int SSL_set_wfd(SSL
*s
, int fd
)
1290 BIO
*rbio
= SSL_get_rbio(s
);
1292 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1293 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1294 BIO
*bio
= BIO_new(BIO_s_socket());
1297 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1300 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1301 SSL_set0_wbio(s
, bio
);
1304 SSL_set0_wbio(s
, rbio
);
1309 int SSL_set_rfd(SSL
*s
, int fd
)
1311 BIO
*wbio
= SSL_get_wbio(s
);
1313 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1314 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1315 BIO
*bio
= BIO_new(BIO_s_socket());
1318 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1321 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1322 SSL_set0_rbio(s
, bio
);
1325 SSL_set0_rbio(s
, wbio
);
1332 /* return length of latest Finished message we sent, copy to 'buf' */
1333 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1337 if (s
->s3
!= NULL
) {
1338 ret
= s
->s3
->tmp
.finish_md_len
;
1341 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1346 /* return length of latest Finished message we expected, copy to 'buf' */
1347 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1351 if (s
->s3
!= NULL
) {
1352 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1355 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1360 int SSL_get_verify_mode(const SSL
*s
)
1362 return (s
->verify_mode
);
1365 int SSL_get_verify_depth(const SSL
*s
)
1367 return X509_VERIFY_PARAM_get_depth(s
->param
);
1370 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1371 return (s
->verify_callback
);
1374 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1376 return (ctx
->verify_mode
);
1379 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1381 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1384 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1385 return (ctx
->default_verify_callback
);
1388 void SSL_set_verify(SSL
*s
, int mode
,
1389 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1391 s
->verify_mode
= mode
;
1392 if (callback
!= NULL
)
1393 s
->verify_callback
= callback
;
1396 void SSL_set_verify_depth(SSL
*s
, int depth
)
1398 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1401 void SSL_set_read_ahead(SSL
*s
, int yes
)
1403 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1406 int SSL_get_read_ahead(const SSL
*s
)
1408 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1411 int SSL_pending(const SSL
*s
)
1413 size_t pending
= s
->method
->ssl_pending(s
);
1416 * SSL_pending cannot work properly if read-ahead is enabled
1417 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1418 * impossible to fix since SSL_pending cannot report errors that may be
1419 * observed while scanning the new data. (Note that SSL_pending() is
1420 * often used as a boolean value, so we'd better not return -1.)
1422 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1423 * we just return INT_MAX.
1425 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1428 int SSL_has_pending(const SSL
*s
)
1431 * Similar to SSL_pending() but returns a 1 to indicate that we have
1432 * unprocessed data available or 0 otherwise (as opposed to the number of
1433 * bytes available). Unlike SSL_pending() this will take into account
1434 * read_ahead data. A 1 return simply indicates that we have unprocessed
1435 * data. That data may not result in any application data, or we may fail
1436 * to parse the records for some reason.
1438 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1441 return RECORD_LAYER_read_pending(&s
->rlayer
);
1444 X509
*SSL_get_peer_certificate(const SSL
*s
)
1448 if ((s
== NULL
) || (s
->session
== NULL
))
1451 r
= s
->session
->peer
;
1461 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1465 if ((s
== NULL
) || (s
->session
== NULL
))
1468 r
= s
->session
->peer_chain
;
1471 * If we are a client, cert_chain includes the peer's own certificate; if
1472 * we are a server, it does not.
1479 * Now in theory, since the calling process own 't' it should be safe to
1480 * modify. We need to be able to read f without being hassled
1482 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1485 /* Do we need to to SSL locking? */
1486 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1491 * what if we are setup for one protocol version but want to talk another
1493 if (t
->method
!= f
->method
) {
1494 t
->method
->ssl_free(t
);
1495 t
->method
= f
->method
;
1496 if (t
->method
->ssl_new(t
) == 0)
1500 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1501 ssl_cert_free(t
->cert
);
1503 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1510 /* Fix this so it checks all the valid key/cert options */
1511 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1513 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1514 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1517 if (ctx
->cert
->key
->privatekey
== NULL
) {
1518 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1521 return (X509_check_private_key
1522 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1525 /* Fix this function so that it takes an optional type parameter */
1526 int SSL_check_private_key(const SSL
*ssl
)
1529 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1532 if (ssl
->cert
->key
->x509
== NULL
) {
1533 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1536 if (ssl
->cert
->key
->privatekey
== NULL
) {
1537 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1540 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1541 ssl
->cert
->key
->privatekey
));
1544 int SSL_waiting_for_async(SSL
*s
)
1552 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1554 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1558 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1561 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1562 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1564 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1568 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1572 int SSL_accept(SSL
*s
)
1574 if (s
->handshake_func
== NULL
) {
1575 /* Not properly initialized yet */
1576 SSL_set_accept_state(s
);
1579 return SSL_do_handshake(s
);
1582 int SSL_connect(SSL
*s
)
1584 if (s
->handshake_func
== NULL
) {
1585 /* Not properly initialized yet */
1586 SSL_set_connect_state(s
);
1589 return SSL_do_handshake(s
);
1592 long SSL_get_default_timeout(const SSL
*s
)
1594 return (s
->method
->get_timeout());
1597 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1598 int (*func
) (void *))
1601 if (s
->waitctx
== NULL
) {
1602 s
->waitctx
= ASYNC_WAIT_CTX_new();
1603 if (s
->waitctx
== NULL
)
1606 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1607 sizeof(struct ssl_async_args
))) {
1609 s
->rwstate
= SSL_NOTHING
;
1610 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1613 s
->rwstate
= SSL_ASYNC_PAUSED
;
1616 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1622 s
->rwstate
= SSL_NOTHING
;
1623 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1624 /* Shouldn't happen */
1629 static int ssl_io_intern(void *vargs
)
1631 struct ssl_async_args
*args
;
1636 args
= (struct ssl_async_args
*)vargs
;
1640 switch (args
->type
) {
1642 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1644 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1646 return args
->f
.func_other(s
);
1651 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1653 if (s
->handshake_func
== NULL
) {
1654 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1658 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1659 s
->rwstate
= SSL_NOTHING
;
1663 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1664 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1665 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1669 * If we are a client and haven't received the ServerHello etc then we
1672 ossl_statem_check_finish_init(s
, 0);
1674 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1675 struct ssl_async_args args
;
1681 args
.type
= READFUNC
;
1682 args
.f
.func_read
= s
->method
->ssl_read
;
1684 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1685 *readbytes
= s
->asyncrw
;
1688 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1692 int SSL_read(SSL
*s
, void *buf
, int num
)
1698 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1702 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1705 * The cast is safe here because ret should be <= INT_MAX because num is
1709 ret
= (int)readbytes
;
1714 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1716 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1723 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1728 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1729 return SSL_READ_EARLY_DATA_ERROR
;
1732 switch (s
->early_data_state
) {
1733 case SSL_EARLY_DATA_NONE
:
1734 if (!SSL_in_before(s
)) {
1735 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1736 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1737 return SSL_READ_EARLY_DATA_ERROR
;
1741 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1742 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1743 ret
= SSL_accept(s
);
1746 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1747 return SSL_READ_EARLY_DATA_ERROR
;
1751 case SSL_EARLY_DATA_READ_RETRY
:
1752 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1753 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1754 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1756 * State machine will update early_data_state to
1757 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1760 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1761 != SSL_EARLY_DATA_FINISHED_READING
)) {
1762 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1763 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1764 : SSL_READ_EARLY_DATA_ERROR
;
1767 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1770 return SSL_READ_EARLY_DATA_FINISH
;
1773 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1774 return SSL_READ_EARLY_DATA_ERROR
;
1778 int SSL_get_early_data_status(const SSL
*s
)
1780 return s
->ext
.early_data
;
1783 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1785 if (s
->handshake_func
== NULL
) {
1786 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1790 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1793 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1794 struct ssl_async_args args
;
1800 args
.type
= READFUNC
;
1801 args
.f
.func_read
= s
->method
->ssl_peek
;
1803 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1804 *readbytes
= s
->asyncrw
;
1807 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1811 int SSL_peek(SSL
*s
, void *buf
, int num
)
1817 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1821 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1824 * The cast is safe here because ret should be <= INT_MAX because num is
1828 ret
= (int)readbytes
;
1834 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1836 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1843 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1845 if (s
->handshake_func
== NULL
) {
1846 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1850 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1851 s
->rwstate
= SSL_NOTHING
;
1852 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1856 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1857 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1858 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1859 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1862 /* If we are a client and haven't sent the Finished we better do that */
1863 ossl_statem_check_finish_init(s
, 1);
1865 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1867 struct ssl_async_args args
;
1870 args
.buf
= (void *)buf
;
1872 args
.type
= WRITEFUNC
;
1873 args
.f
.func_write
= s
->method
->ssl_write
;
1875 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1876 *written
= s
->asyncrw
;
1879 return s
->method
->ssl_write(s
, buf
, num
, written
);
1883 int SSL_write(SSL
*s
, const void *buf
, int num
)
1889 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1893 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1896 * The cast is safe here because ret should be <= INT_MAX because num is
1905 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1907 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1914 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1916 int ret
, early_data_state
;
1918 switch (s
->early_data_state
) {
1919 case SSL_EARLY_DATA_NONE
:
1921 || !SSL_in_before(s
)
1922 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1923 && (s
->psk_use_session_cb
== NULL
))) {
1924 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1925 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1930 case SSL_EARLY_DATA_CONNECT_RETRY
:
1931 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1932 ret
= SSL_connect(s
);
1935 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1940 case SSL_EARLY_DATA_WRITE_RETRY
:
1941 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1942 ret
= SSL_write_ex(s
, buf
, num
, written
);
1943 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1946 case SSL_EARLY_DATA_FINISHED_READING
:
1947 case SSL_EARLY_DATA_READ_RETRY
:
1948 early_data_state
= s
->early_data_state
;
1949 /* We are a server writing to an unauthenticated client */
1950 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1951 ret
= SSL_write_ex(s
, buf
, num
, written
);
1952 s
->early_data_state
= early_data_state
;
1956 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1961 int SSL_shutdown(SSL
*s
)
1964 * Note that this function behaves differently from what one might
1965 * expect. Return values are 0 for no success (yet), 1 for success; but
1966 * calling it once is usually not enough, even if blocking I/O is used
1967 * (see ssl3_shutdown).
1970 if (s
->handshake_func
== NULL
) {
1971 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1975 if (!SSL_in_init(s
)) {
1976 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1977 struct ssl_async_args args
;
1980 args
.type
= OTHERFUNC
;
1981 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1983 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1985 return s
->method
->ssl_shutdown(s
);
1988 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1993 int SSL_key_update(SSL
*s
, int updatetype
)
1996 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1997 * negotiated, and that it is appropriate to call SSL_key_update() instead
1998 * of SSL_renegotiate().
2000 if (!SSL_IS_TLS13(s
)) {
2001 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2005 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2006 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2007 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2011 if (!SSL_is_init_finished(s
)) {
2012 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2016 ossl_statem_set_in_init(s
, 1);
2017 s
->key_update
= updatetype
;
2021 int SSL_get_key_update_type(SSL
*s
)
2023 return s
->key_update
;
2026 int SSL_renegotiate(SSL
*s
)
2028 if (SSL_IS_TLS13(s
)) {
2029 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2033 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2034 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2041 return (s
->method
->ssl_renegotiate(s
));
2044 int SSL_renegotiate_abbreviated(SSL
*s
)
2046 if (SSL_IS_TLS13(s
)) {
2047 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2051 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2052 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2059 return (s
->method
->ssl_renegotiate(s
));
2062 int SSL_renegotiate_pending(SSL
*s
)
2065 * becomes true when negotiation is requested; false again once a
2066 * handshake has finished
2068 return (s
->renegotiate
!= 0);
2071 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2076 case SSL_CTRL_GET_READ_AHEAD
:
2077 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2078 case SSL_CTRL_SET_READ_AHEAD
:
2079 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2080 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2083 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2084 s
->msg_callback_arg
= parg
;
2088 return (s
->mode
|= larg
);
2089 case SSL_CTRL_CLEAR_MODE
:
2090 return (s
->mode
&= ~larg
);
2091 case SSL_CTRL_GET_MAX_CERT_LIST
:
2092 return (long)(s
->max_cert_list
);
2093 case SSL_CTRL_SET_MAX_CERT_LIST
:
2096 l
= (long)s
->max_cert_list
;
2097 s
->max_cert_list
= (size_t)larg
;
2099 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2100 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2102 s
->max_send_fragment
= larg
;
2103 if (s
->max_send_fragment
< s
->split_send_fragment
)
2104 s
->split_send_fragment
= s
->max_send_fragment
;
2106 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2107 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2109 s
->split_send_fragment
= larg
;
2111 case SSL_CTRL_SET_MAX_PIPELINES
:
2112 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2114 s
->max_pipelines
= larg
;
2116 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2118 case SSL_CTRL_GET_RI_SUPPORT
:
2120 return s
->s3
->send_connection_binding
;
2123 case SSL_CTRL_CERT_FLAGS
:
2124 return (s
->cert
->cert_flags
|= larg
);
2125 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2126 return (s
->cert
->cert_flags
&= ~larg
);
2128 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2130 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2132 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2133 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2135 return TLS_CIPHER_LEN
;
2137 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2138 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2140 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2144 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2145 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2146 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2147 &s
->min_proto_version
);
2148 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2149 return s
->min_proto_version
;
2150 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2151 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2152 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2153 &s
->max_proto_version
);
2154 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2155 return s
->max_proto_version
;
2157 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2161 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2164 case SSL_CTRL_SET_MSG_CALLBACK
:
2165 s
->msg_callback
= (void (*)
2166 (int write_p
, int version
, int content_type
,
2167 const void *buf
, size_t len
, SSL
*ssl
,
2172 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2176 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2178 return ctx
->sessions
;
2181 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2184 /* For some cases with ctx == NULL perform syntax checks */
2187 #ifndef OPENSSL_NO_EC
2188 case SSL_CTRL_SET_GROUPS_LIST
:
2189 return tls1_set_groups_list(NULL
, NULL
, parg
);
2191 case SSL_CTRL_SET_SIGALGS_LIST
:
2192 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2193 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2200 case SSL_CTRL_GET_READ_AHEAD
:
2201 return (ctx
->read_ahead
);
2202 case SSL_CTRL_SET_READ_AHEAD
:
2203 l
= ctx
->read_ahead
;
2204 ctx
->read_ahead
= larg
;
2207 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2208 ctx
->msg_callback_arg
= parg
;
2211 case SSL_CTRL_GET_MAX_CERT_LIST
:
2212 return (long)(ctx
->max_cert_list
);
2213 case SSL_CTRL_SET_MAX_CERT_LIST
:
2216 l
= (long)ctx
->max_cert_list
;
2217 ctx
->max_cert_list
= (size_t)larg
;
2220 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2223 l
= (long)ctx
->session_cache_size
;
2224 ctx
->session_cache_size
= (size_t)larg
;
2226 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2227 return (long)(ctx
->session_cache_size
);
2228 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2229 l
= ctx
->session_cache_mode
;
2230 ctx
->session_cache_mode
= larg
;
2232 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2233 return (ctx
->session_cache_mode
);
2235 case SSL_CTRL_SESS_NUMBER
:
2236 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2237 case SSL_CTRL_SESS_CONNECT
:
2238 return (ctx
->stats
.sess_connect
);
2239 case SSL_CTRL_SESS_CONNECT_GOOD
:
2240 return (ctx
->stats
.sess_connect_good
);
2241 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2242 return (ctx
->stats
.sess_connect_renegotiate
);
2243 case SSL_CTRL_SESS_ACCEPT
:
2244 return (ctx
->stats
.sess_accept
);
2245 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2246 return (ctx
->stats
.sess_accept_good
);
2247 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2248 return (ctx
->stats
.sess_accept_renegotiate
);
2249 case SSL_CTRL_SESS_HIT
:
2250 return (ctx
->stats
.sess_hit
);
2251 case SSL_CTRL_SESS_CB_HIT
:
2252 return (ctx
->stats
.sess_cb_hit
);
2253 case SSL_CTRL_SESS_MISSES
:
2254 return (ctx
->stats
.sess_miss
);
2255 case SSL_CTRL_SESS_TIMEOUTS
:
2256 return (ctx
->stats
.sess_timeout
);
2257 case SSL_CTRL_SESS_CACHE_FULL
:
2258 return (ctx
->stats
.sess_cache_full
);
2260 return (ctx
->mode
|= larg
);
2261 case SSL_CTRL_CLEAR_MODE
:
2262 return (ctx
->mode
&= ~larg
);
2263 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2264 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2266 ctx
->max_send_fragment
= larg
;
2267 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2268 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2270 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2271 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2273 ctx
->split_send_fragment
= larg
;
2275 case SSL_CTRL_SET_MAX_PIPELINES
:
2276 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2278 ctx
->max_pipelines
= larg
;
2280 case SSL_CTRL_CERT_FLAGS
:
2281 return (ctx
->cert
->cert_flags
|= larg
);
2282 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2283 return (ctx
->cert
->cert_flags
&= ~larg
);
2284 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2285 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2286 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2287 &ctx
->min_proto_version
);
2288 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2289 return ctx
->min_proto_version
;
2290 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2291 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2292 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2293 &ctx
->max_proto_version
);
2294 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2295 return ctx
->max_proto_version
;
2297 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2301 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2304 case SSL_CTRL_SET_MSG_CALLBACK
:
2305 ctx
->msg_callback
= (void (*)
2306 (int write_p
, int version
, int content_type
,
2307 const void *buf
, size_t len
, SSL
*ssl
,
2312 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2316 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2325 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2326 const SSL_CIPHER
*const *bp
)
2328 if ((*ap
)->id
> (*bp
)->id
)
2330 if ((*ap
)->id
< (*bp
)->id
)
2335 /** return a STACK of the ciphers available for the SSL and in order of
2337 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2340 if (s
->cipher_list
!= NULL
) {
2341 return (s
->cipher_list
);
2342 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2343 return (s
->ctx
->cipher_list
);
2349 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2351 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2353 return s
->session
->ciphers
;
2356 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2358 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2360 ciphers
= SSL_get_ciphers(s
);
2363 ssl_set_client_disabled(s
);
2364 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2365 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2366 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2368 sk
= sk_SSL_CIPHER_new_null();
2371 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2372 sk_SSL_CIPHER_free(sk
);
2380 /** return a STACK of the ciphers available for the SSL and in order of
2382 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2385 if (s
->cipher_list_by_id
!= NULL
) {
2386 return (s
->cipher_list_by_id
);
2387 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2388 return (s
->ctx
->cipher_list_by_id
);
2394 /** The old interface to get the same thing as SSL_get_ciphers() */
2395 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2397 const SSL_CIPHER
*c
;
2398 STACK_OF(SSL_CIPHER
) *sk
;
2402 sk
= SSL_get_ciphers(s
);
2403 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2405 c
= sk_SSL_CIPHER_value(sk
, n
);
2411 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2413 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2416 return ctx
->cipher_list
;
2420 /** specify the ciphers to be used by default by the SSL_CTX */
2421 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2423 STACK_OF(SSL_CIPHER
) *sk
;
2425 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2426 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2428 * ssl_create_cipher_list may return an empty stack if it was unable to
2429 * find a cipher matching the given rule string (for example if the rule
2430 * string specifies a cipher which has been disabled). This is not an
2431 * error as far as ssl_create_cipher_list is concerned, and hence
2432 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2436 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2437 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2443 /** specify the ciphers to be used by the SSL */
2444 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2446 STACK_OF(SSL_CIPHER
) *sk
;
2448 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2449 &s
->cipher_list_by_id
, str
, s
->cert
);
2450 /* see comment in SSL_CTX_set_cipher_list */
2453 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2454 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2460 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2463 STACK_OF(SSL_CIPHER
) *sk
;
2464 const SSL_CIPHER
*c
;
2467 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2471 sk
= s
->session
->ciphers
;
2473 if (sk_SSL_CIPHER_num(sk
) == 0)
2476 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2479 c
= sk_SSL_CIPHER_value(sk
, i
);
2480 n
= strlen(c
->name
);
2496 /** return a servername extension value if provided in Client Hello, or NULL.
2497 * So far, only host_name types are defined (RFC 3546).
2500 const char *SSL_get_servername(const SSL
*s
, const int type
)
2502 if (type
!= TLSEXT_NAMETYPE_host_name
)
2505 return s
->session
&& !s
->ext
.hostname
?
2506 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2509 int SSL_get_servername_type(const SSL
*s
)
2512 && (!s
->ext
.hostname
? s
->session
->
2513 ext
.hostname
: s
->ext
.hostname
))
2514 return TLSEXT_NAMETYPE_host_name
;
2519 * SSL_select_next_proto implements the standard protocol selection. It is
2520 * expected that this function is called from the callback set by
2521 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2522 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2523 * not included in the length. A byte string of length 0 is invalid. No byte
2524 * string may be truncated. The current, but experimental algorithm for
2525 * selecting the protocol is: 1) If the server doesn't support NPN then this
2526 * is indicated to the callback. In this case, the client application has to
2527 * abort the connection or have a default application level protocol. 2) If
2528 * the server supports NPN, but advertises an empty list then the client
2529 * selects the first protocol in its list, but indicates via the API that this
2530 * fallback case was enacted. 3) Otherwise, the client finds the first
2531 * protocol in the server's list that it supports and selects this protocol.
2532 * This is because it's assumed that the server has better information about
2533 * which protocol a client should use. 4) If the client doesn't support any
2534 * of the server's advertised protocols, then this is treated the same as
2535 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2536 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2538 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2539 const unsigned char *server
,
2540 unsigned int server_len
,
2541 const unsigned char *client
, unsigned int client_len
)
2544 const unsigned char *result
;
2545 int status
= OPENSSL_NPN_UNSUPPORTED
;
2548 * For each protocol in server preference order, see if we support it.
2550 for (i
= 0; i
< server_len
;) {
2551 for (j
= 0; j
< client_len
;) {
2552 if (server
[i
] == client
[j
] &&
2553 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2554 /* We found a match */
2555 result
= &server
[i
];
2556 status
= OPENSSL_NPN_NEGOTIATED
;
2566 /* There's no overlap between our protocols and the server's list. */
2568 status
= OPENSSL_NPN_NO_OVERLAP
;
2571 *out
= (unsigned char *)result
+ 1;
2572 *outlen
= result
[0];
2576 #ifndef OPENSSL_NO_NEXTPROTONEG
2578 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2579 * client's requested protocol for this connection and returns 0. If the
2580 * client didn't request any protocol, then *data is set to NULL. Note that
2581 * the client can request any protocol it chooses. The value returned from
2582 * this function need not be a member of the list of supported protocols
2583 * provided by the callback.
2585 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2592 *len
= (unsigned int)s
->ext
.npn_len
;
2597 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2598 * a TLS server needs a list of supported protocols for Next Protocol
2599 * Negotiation. The returned list must be in wire format. The list is
2600 * returned by setting |out| to point to it and |outlen| to its length. This
2601 * memory will not be modified, but one should assume that the SSL* keeps a
2602 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2603 * wishes to advertise. Otherwise, no such extension will be included in the
2606 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2607 SSL_CTX_npn_advertised_cb_func cb
,
2610 ctx
->ext
.npn_advertised_cb
= cb
;
2611 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2615 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2616 * client needs to select a protocol from the server's provided list. |out|
2617 * must be set to point to the selected protocol (which may be within |in|).
2618 * The length of the protocol name must be written into |outlen|. The
2619 * server's advertised protocols are provided in |in| and |inlen|. The
2620 * callback can assume that |in| is syntactically valid. The client must
2621 * select a protocol. It is fatal to the connection if this callback returns
2622 * a value other than SSL_TLSEXT_ERR_OK.
2624 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2625 SSL_CTX_npn_select_cb_func cb
,
2628 ctx
->ext
.npn_select_cb
= cb
;
2629 ctx
->ext
.npn_select_cb_arg
= arg
;
2634 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2635 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2636 * length-prefixed strings). Returns 0 on success.
2638 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2639 unsigned int protos_len
)
2641 OPENSSL_free(ctx
->ext
.alpn
);
2642 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2643 if (ctx
->ext
.alpn
== NULL
) {
2644 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2647 ctx
->ext
.alpn_len
= protos_len
;
2653 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2654 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2655 * length-prefixed strings). Returns 0 on success.
2657 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2658 unsigned int protos_len
)
2660 OPENSSL_free(ssl
->ext
.alpn
);
2661 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2662 if (ssl
->ext
.alpn
== NULL
) {
2663 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2666 ssl
->ext
.alpn_len
= protos_len
;
2672 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2673 * called during ClientHello processing in order to select an ALPN protocol
2674 * from the client's list of offered protocols.
2676 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2677 SSL_CTX_alpn_select_cb_func cb
,
2680 ctx
->ext
.alpn_select_cb
= cb
;
2681 ctx
->ext
.alpn_select_cb_arg
= arg
;
2685 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2686 * On return it sets |*data| to point to |*len| bytes of protocol name
2687 * (not including the leading length-prefix byte). If the server didn't
2688 * respond with a negotiated protocol then |*len| will be zero.
2690 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2695 *data
= ssl
->s3
->alpn_selected
;
2699 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2702 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2703 const char *label
, size_t llen
,
2704 const unsigned char *context
, size_t contextlen
,
2707 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2710 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2712 contextlen
, use_context
);
2715 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2717 const unsigned char *session_id
= a
->session_id
;
2719 unsigned char tmp_storage
[4];
2721 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2722 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2723 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2724 session_id
= tmp_storage
;
2728 ((unsigned long)session_id
[0]) |
2729 ((unsigned long)session_id
[1] << 8L) |
2730 ((unsigned long)session_id
[2] << 16L) |
2731 ((unsigned long)session_id
[3] << 24L);
2736 * NB: If this function (or indeed the hash function which uses a sort of
2737 * coarser function than this one) is changed, ensure
2738 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2739 * being able to construct an SSL_SESSION that will collide with any existing
2740 * session with a matching session ID.
2742 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2744 if (a
->ssl_version
!= b
->ssl_version
)
2746 if (a
->session_id_length
!= b
->session_id_length
)
2748 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2752 * These wrapper functions should remain rather than redeclaring
2753 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2754 * variable. The reason is that the functions aren't static, they're exposed
2758 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2760 SSL_CTX
*ret
= NULL
;
2763 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2767 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2770 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2771 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2774 ret
= OPENSSL_zalloc(sizeof(*ret
));
2779 ret
->min_proto_version
= 0;
2780 ret
->max_proto_version
= 0;
2781 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2782 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2783 /* We take the system default. */
2784 ret
->session_timeout
= meth
->get_timeout();
2785 ret
->references
= 1;
2786 ret
->lock
= CRYPTO_THREAD_lock_new();
2787 if (ret
->lock
== NULL
) {
2788 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2792 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2793 ret
->verify_mode
= SSL_VERIFY_NONE
;
2794 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2797 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2798 if (ret
->sessions
== NULL
)
2800 ret
->cert_store
= X509_STORE_new();
2801 if (ret
->cert_store
== NULL
)
2803 #ifndef OPENSSL_NO_CT
2804 ret
->ctlog_store
= CTLOG_STORE_new();
2805 if (ret
->ctlog_store
== NULL
)
2808 if (!ssl_create_cipher_list(ret
->method
,
2809 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2810 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2811 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2812 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2816 ret
->param
= X509_VERIFY_PARAM_new();
2817 if (ret
->param
== NULL
)
2820 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2821 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2824 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2825 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2829 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2832 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2835 /* No compression for DTLS */
2836 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2837 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2839 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2840 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2842 /* Setup RFC5077 ticket keys */
2843 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2844 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2845 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2846 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2847 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2848 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2849 ret
->options
|= SSL_OP_NO_TICKET
;
2851 #ifndef OPENSSL_NO_SRP
2852 if (!SSL_CTX_SRP_CTX_init(ret
))
2855 #ifndef OPENSSL_NO_ENGINE
2856 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2857 # define eng_strx(x) #x
2858 # define eng_str(x) eng_strx(x)
2859 /* Use specific client engine automatically... ignore errors */
2862 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2865 ENGINE_load_builtin_engines();
2866 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2868 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2874 * Default is to connect to non-RI servers. When RI is more widely
2875 * deployed might change this.
2877 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2879 * Disable compression by default to prevent CRIME. Applications can
2880 * re-enable compression by configuring
2881 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2882 * or by using the SSL_CONF library.
2884 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2886 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2889 * Default max early data is a fully loaded single record. Could be split
2890 * across multiple records in practice
2892 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2896 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2902 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2906 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2909 REF_PRINT_COUNT("SSL_CTX", ctx
);
2910 REF_ASSERT_ISNT(i
< 2);
2911 return ((i
> 1) ? 1 : 0);
2914 void SSL_CTX_free(SSL_CTX
*a
)
2921 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2922 REF_PRINT_COUNT("SSL_CTX", a
);
2925 REF_ASSERT_ISNT(i
< 0);
2927 X509_VERIFY_PARAM_free(a
->param
);
2928 dane_ctx_final(&a
->dane
);
2931 * Free internal session cache. However: the remove_cb() may reference
2932 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2933 * after the sessions were flushed.
2934 * As the ex_data handling routines might also touch the session cache,
2935 * the most secure solution seems to be: empty (flush) the cache, then
2936 * free ex_data, then finally free the cache.
2937 * (See ticket [openssl.org #212].)
2939 if (a
->sessions
!= NULL
)
2940 SSL_CTX_flush_sessions(a
, 0);
2942 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2943 lh_SSL_SESSION_free(a
->sessions
);
2944 X509_STORE_free(a
->cert_store
);
2945 #ifndef OPENSSL_NO_CT
2946 CTLOG_STORE_free(a
->ctlog_store
);
2948 sk_SSL_CIPHER_free(a
->cipher_list
);
2949 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2950 ssl_cert_free(a
->cert
);
2951 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2952 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2953 a
->comp_methods
= NULL
;
2954 #ifndef OPENSSL_NO_SRTP
2955 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2957 #ifndef OPENSSL_NO_SRP
2958 SSL_CTX_SRP_CTX_free(a
);
2960 #ifndef OPENSSL_NO_ENGINE
2961 ENGINE_finish(a
->client_cert_engine
);
2964 #ifndef OPENSSL_NO_EC
2965 OPENSSL_free(a
->ext
.ecpointformats
);
2966 OPENSSL_free(a
->ext
.supportedgroups
);
2968 OPENSSL_free(a
->ext
.alpn
);
2970 CRYPTO_THREAD_lock_free(a
->lock
);
2975 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2977 ctx
->default_passwd_callback
= cb
;
2980 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2982 ctx
->default_passwd_callback_userdata
= u
;
2985 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2987 return ctx
->default_passwd_callback
;
2990 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2992 return ctx
->default_passwd_callback_userdata
;
2995 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2997 s
->default_passwd_callback
= cb
;
3000 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
3002 s
->default_passwd_callback_userdata
= u
;
3005 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3007 return s
->default_passwd_callback
;
3010 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3012 return s
->default_passwd_callback_userdata
;
3015 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3016 int (*cb
) (X509_STORE_CTX
*, void *),
3019 ctx
->app_verify_callback
= cb
;
3020 ctx
->app_verify_arg
= arg
;
3023 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3024 int (*cb
) (int, X509_STORE_CTX
*))
3026 ctx
->verify_mode
= mode
;
3027 ctx
->default_verify_callback
= cb
;
3030 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3032 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3035 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3037 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3040 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3042 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3045 void ssl_set_masks(SSL
*s
)
3048 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3049 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3050 unsigned long mask_k
, mask_a
;
3051 #ifndef OPENSSL_NO_EC
3052 int have_ecc_cert
, ecdsa_ok
;
3057 #ifndef OPENSSL_NO_DH
3058 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3063 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3064 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3065 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3066 #ifndef OPENSSL_NO_EC
3067 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3073 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3074 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3077 #ifndef OPENSSL_NO_GOST
3078 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3079 mask_k
|= SSL_kGOST
;
3080 mask_a
|= SSL_aGOST12
;
3082 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3083 mask_k
|= SSL_kGOST
;
3084 mask_a
|= SSL_aGOST12
;
3086 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3087 mask_k
|= SSL_kGOST
;
3088 mask_a
|= SSL_aGOST01
;
3099 * If we only have an RSA-PSS certificate allow RSA authentication
3100 * if TLS 1.2 and peer supports it.
3103 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3104 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3105 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3112 mask_a
|= SSL_aNULL
;
3115 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3116 * depending on the key usage extension.
3118 #ifndef OPENSSL_NO_EC
3119 if (have_ecc_cert
) {
3121 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3122 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3123 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3126 mask_a
|= SSL_aECDSA
;
3128 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3129 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3130 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3131 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3132 mask_a
|= SSL_aECDSA
;
3135 #ifndef OPENSSL_NO_EC
3136 mask_k
|= SSL_kECDHE
;
3139 #ifndef OPENSSL_NO_PSK
3142 if (mask_k
& SSL_kRSA
)
3143 mask_k
|= SSL_kRSAPSK
;
3144 if (mask_k
& SSL_kDHE
)
3145 mask_k
|= SSL_kDHEPSK
;
3146 if (mask_k
& SSL_kECDHE
)
3147 mask_k
|= SSL_kECDHEPSK
;
3150 s
->s3
->tmp
.mask_k
= mask_k
;
3151 s
->s3
->tmp
.mask_a
= mask_a
;
3154 #ifndef OPENSSL_NO_EC
3156 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3158 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3159 /* key usage, if present, must allow signing */
3160 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3161 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3162 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3166 return 1; /* all checks are ok */
3171 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3172 size_t *serverinfo_length
)
3174 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3175 *serverinfo_length
= 0;
3177 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3180 *serverinfo
= cpk
->serverinfo
;
3181 *serverinfo_length
= cpk
->serverinfo_length
;
3185 void ssl_update_cache(SSL
*s
, int mode
)
3190 * If the session_id_length is 0, we are not supposed to cache it, and it
3191 * would be rather hard to do anyway :-)
3193 if (s
->session
->session_id_length
== 0)
3196 i
= s
->session_ctx
->session_cache_mode
;
3198 && (!s
->hit
|| SSL_IS_TLS13(s
))
3199 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3200 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3201 && s
->session_ctx
->new_session_cb
!= NULL
) {
3202 SSL_SESSION_up_ref(s
->session
);
3203 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3204 SSL_SESSION_free(s
->session
);
3207 /* auto flush every 255 connections */
3208 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3209 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3210 ? s
->session_ctx
->stats
.sess_connect_good
3211 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3212 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3217 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3222 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3227 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3231 if (s
->method
!= meth
) {
3232 const SSL_METHOD
*sm
= s
->method
;
3233 int (*hf
) (SSL
*) = s
->handshake_func
;
3235 if (sm
->version
== meth
->version
)
3240 ret
= s
->method
->ssl_new(s
);
3243 if (hf
== sm
->ssl_connect
)
3244 s
->handshake_func
= meth
->ssl_connect
;
3245 else if (hf
== sm
->ssl_accept
)
3246 s
->handshake_func
= meth
->ssl_accept
;
3251 int SSL_get_error(const SSL
*s
, int i
)
3258 return (SSL_ERROR_NONE
);
3261 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3262 * where we do encode the error
3264 if ((l
= ERR_peek_error()) != 0) {
3265 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3266 return (SSL_ERROR_SYSCALL
);
3268 return (SSL_ERROR_SSL
);
3271 if (SSL_want_read(s
)) {
3272 bio
= SSL_get_rbio(s
);
3273 if (BIO_should_read(bio
))
3274 return (SSL_ERROR_WANT_READ
);
3275 else if (BIO_should_write(bio
))
3277 * This one doesn't make too much sense ... We never try to write
3278 * to the rbio, and an application program where rbio and wbio
3279 * are separate couldn't even know what it should wait for.
3280 * However if we ever set s->rwstate incorrectly (so that we have
3281 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3282 * wbio *are* the same, this test works around that bug; so it
3283 * might be safer to keep it.
3285 return (SSL_ERROR_WANT_WRITE
);
3286 else if (BIO_should_io_special(bio
)) {
3287 reason
= BIO_get_retry_reason(bio
);
3288 if (reason
== BIO_RR_CONNECT
)
3289 return (SSL_ERROR_WANT_CONNECT
);
3290 else if (reason
== BIO_RR_ACCEPT
)
3291 return (SSL_ERROR_WANT_ACCEPT
);
3293 return (SSL_ERROR_SYSCALL
); /* unknown */
3297 if (SSL_want_write(s
)) {
3298 /* Access wbio directly - in order to use the buffered bio if present */
3300 if (BIO_should_write(bio
))
3301 return (SSL_ERROR_WANT_WRITE
);
3302 else if (BIO_should_read(bio
))
3304 * See above (SSL_want_read(s) with BIO_should_write(bio))
3306 return (SSL_ERROR_WANT_READ
);
3307 else if (BIO_should_io_special(bio
)) {
3308 reason
= BIO_get_retry_reason(bio
);
3309 if (reason
== BIO_RR_CONNECT
)
3310 return (SSL_ERROR_WANT_CONNECT
);
3311 else if (reason
== BIO_RR_ACCEPT
)
3312 return (SSL_ERROR_WANT_ACCEPT
);
3314 return (SSL_ERROR_SYSCALL
);
3317 if (SSL_want_x509_lookup(s
))
3318 return (SSL_ERROR_WANT_X509_LOOKUP
);
3319 if (SSL_want_async(s
))
3320 return SSL_ERROR_WANT_ASYNC
;
3321 if (SSL_want_async_job(s
))
3322 return SSL_ERROR_WANT_ASYNC_JOB
;
3323 if (SSL_want_client_hello_cb(s
))
3324 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3326 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3327 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3328 return (SSL_ERROR_ZERO_RETURN
);
3330 return (SSL_ERROR_SYSCALL
);
3333 static int ssl_do_handshake_intern(void *vargs
)
3335 struct ssl_async_args
*args
;
3338 args
= (struct ssl_async_args
*)vargs
;
3341 return s
->handshake_func(s
);
3344 int SSL_do_handshake(SSL
*s
)
3348 if (s
->handshake_func
== NULL
) {
3349 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3353 ossl_statem_check_finish_init(s
, -1);
3355 s
->method
->ssl_renegotiate_check(s
, 0);
3357 if (SSL_is_server(s
)) {
3358 /* clear SNI settings at server-side */
3359 OPENSSL_free(s
->ext
.hostname
);
3360 s
->ext
.hostname
= NULL
;
3363 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3364 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3365 struct ssl_async_args args
;
3369 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3371 ret
= s
->handshake_func(s
);
3377 void SSL_set_accept_state(SSL
*s
)
3381 ossl_statem_clear(s
);
3382 s
->handshake_func
= s
->method
->ssl_accept
;
3386 void SSL_set_connect_state(SSL
*s
)
3390 ossl_statem_clear(s
);
3391 s
->handshake_func
= s
->method
->ssl_connect
;
3395 int ssl_undefined_function(SSL
*s
)
3397 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3401 int ssl_undefined_void_function(void)
3403 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3404 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3408 int ssl_undefined_const_function(const SSL
*s
)
3413 const SSL_METHOD
*ssl_bad_method(int ver
)
3415 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3419 const char *ssl_protocol_to_string(int version
)
3423 case TLS1_3_VERSION
:
3426 case TLS1_2_VERSION
:
3429 case TLS1_1_VERSION
:
3444 case DTLS1_2_VERSION
:
3452 const char *SSL_get_version(const SSL
*s
)
3454 return ssl_protocol_to_string(s
->version
);
3457 SSL
*SSL_dup(SSL
*s
)
3459 STACK_OF(X509_NAME
) *sk
;
3464 /* If we're not quiescent, just up_ref! */
3465 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3466 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3471 * Otherwise, copy configuration state, and session if set.
3473 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3476 if (s
->session
!= NULL
) {
3478 * Arranges to share the same session via up_ref. This "copies"
3479 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3481 if (!SSL_copy_session_id(ret
, s
))
3485 * No session has been established yet, so we have to expect that
3486 * s->cert or ret->cert will be changed later -- they should not both
3487 * point to the same object, and thus we can't use
3488 * SSL_copy_session_id.
3490 if (!SSL_set_ssl_method(ret
, s
->method
))
3493 if (s
->cert
!= NULL
) {
3494 ssl_cert_free(ret
->cert
);
3495 ret
->cert
= ssl_cert_dup(s
->cert
);
3496 if (ret
->cert
== NULL
)
3500 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3501 (int)s
->sid_ctx_length
))
3505 if (!ssl_dane_dup(ret
, s
))
3507 ret
->version
= s
->version
;
3508 ret
->options
= s
->options
;
3509 ret
->mode
= s
->mode
;
3510 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3511 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3512 ret
->msg_callback
= s
->msg_callback
;
3513 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3514 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3515 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3516 ret
->generate_session_id
= s
->generate_session_id
;
3518 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3520 /* copy app data, a little dangerous perhaps */
3521 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3524 /* setup rbio, and wbio */
3525 if (s
->rbio
!= NULL
) {
3526 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3529 if (s
->wbio
!= NULL
) {
3530 if (s
->wbio
!= s
->rbio
) {
3531 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3534 BIO_up_ref(ret
->rbio
);
3535 ret
->wbio
= ret
->rbio
;
3539 ret
->server
= s
->server
;
3540 if (s
->handshake_func
) {
3542 SSL_set_accept_state(ret
);
3544 SSL_set_connect_state(ret
);
3546 ret
->shutdown
= s
->shutdown
;
3549 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3550 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3552 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3554 /* dup the cipher_list and cipher_list_by_id stacks */
3555 if (s
->cipher_list
!= NULL
) {
3556 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3559 if (s
->cipher_list_by_id
!= NULL
)
3560 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3564 /* Dup the client_CA list */
3565 if (s
->ca_names
!= NULL
) {
3566 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3569 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3570 xn
= sk_X509_NAME_value(sk
, i
);
3571 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3584 void ssl_clear_cipher_ctx(SSL
*s
)
3586 if (s
->enc_read_ctx
!= NULL
) {
3587 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3588 s
->enc_read_ctx
= NULL
;
3590 if (s
->enc_write_ctx
!= NULL
) {
3591 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3592 s
->enc_write_ctx
= NULL
;
3594 #ifndef OPENSSL_NO_COMP
3595 COMP_CTX_free(s
->expand
);
3597 COMP_CTX_free(s
->compress
);
3602 X509
*SSL_get_certificate(const SSL
*s
)
3604 if (s
->cert
!= NULL
)
3605 return (s
->cert
->key
->x509
);
3610 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3612 if (s
->cert
!= NULL
)
3613 return (s
->cert
->key
->privatekey
);
3618 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3620 if (ctx
->cert
!= NULL
)
3621 return ctx
->cert
->key
->x509
;
3626 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3628 if (ctx
->cert
!= NULL
)
3629 return ctx
->cert
->key
->privatekey
;
3634 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3636 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3637 return (s
->session
->cipher
);
3641 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3643 return s
->s3
->tmp
.new_cipher
;
3646 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3648 #ifndef OPENSSL_NO_COMP
3649 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3655 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3657 #ifndef OPENSSL_NO_COMP
3658 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3664 int ssl_init_wbio_buffer(SSL
*s
)
3668 if (s
->bbio
!= NULL
) {
3669 /* Already buffered. */
3673 bbio
= BIO_new(BIO_f_buffer());
3674 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3676 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3680 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3685 int ssl_free_wbio_buffer(SSL
*s
)
3687 /* callers ensure s is never null */
3688 if (s
->bbio
== NULL
)
3691 s
->wbio
= BIO_pop(s
->wbio
);
3692 if (!ossl_assert(s
->wbio
!= NULL
))
3700 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3702 ctx
->quiet_shutdown
= mode
;
3705 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3707 return (ctx
->quiet_shutdown
);
3710 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3712 s
->quiet_shutdown
= mode
;
3715 int SSL_get_quiet_shutdown(const SSL
*s
)
3717 return (s
->quiet_shutdown
);
3720 void SSL_set_shutdown(SSL
*s
, int mode
)
3725 int SSL_get_shutdown(const SSL
*s
)
3730 int SSL_version(const SSL
*s
)
3735 int SSL_client_version(const SSL
*s
)
3737 return s
->client_version
;
3740 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3745 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3748 if (ssl
->ctx
== ctx
)
3751 ctx
= ssl
->session_ctx
;
3752 new_cert
= ssl_cert_dup(ctx
->cert
);
3753 if (new_cert
== NULL
) {
3757 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3758 ssl_cert_free(new_cert
);
3762 ssl_cert_free(ssl
->cert
);
3763 ssl
->cert
= new_cert
;
3766 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3767 * so setter APIs must prevent invalid lengths from entering the system.
3769 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3773 * If the session ID context matches that of the parent SSL_CTX,
3774 * inherit it from the new SSL_CTX as well. If however the context does
3775 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3776 * leave it unchanged.
3778 if ((ssl
->ctx
!= NULL
) &&
3779 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3780 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3781 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3782 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3785 SSL_CTX_up_ref(ctx
);
3786 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3792 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3794 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3797 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3799 X509_LOOKUP
*lookup
;
3801 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3804 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3806 /* Clear any errors if the default directory does not exist */
3812 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3814 X509_LOOKUP
*lookup
;
3816 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3820 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3822 /* Clear any errors if the default file does not exist */
3828 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3831 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3834 void SSL_set_info_callback(SSL
*ssl
,
3835 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3837 ssl
->info_callback
= cb
;
3841 * One compiler (Diab DCC) doesn't like argument names in returned function
3844 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3847 return ssl
->info_callback
;
3850 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3852 ssl
->verify_result
= arg
;
3855 long SSL_get_verify_result(const SSL
*ssl
)
3857 return (ssl
->verify_result
);
3860 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3863 return sizeof(ssl
->s3
->client_random
);
3864 if (outlen
> sizeof(ssl
->s3
->client_random
))
3865 outlen
= sizeof(ssl
->s3
->client_random
);
3866 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3870 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3873 return sizeof(ssl
->s3
->server_random
);
3874 if (outlen
> sizeof(ssl
->s3
->server_random
))
3875 outlen
= sizeof(ssl
->s3
->server_random
);
3876 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3880 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3881 unsigned char *out
, size_t outlen
)
3884 return session
->master_key_length
;
3885 if (outlen
> session
->master_key_length
)
3886 outlen
= session
->master_key_length
;
3887 memcpy(out
, session
->master_key
, outlen
);
3891 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3894 if (len
> sizeof(sess
->master_key
))
3897 memcpy(sess
->master_key
, in
, len
);
3898 sess
->master_key_length
= len
;
3903 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3905 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3908 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3910 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3913 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3915 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3918 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3920 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3923 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3925 return (ctx
->cert_store
);
3928 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3930 X509_STORE_free(ctx
->cert_store
);
3931 ctx
->cert_store
= store
;
3934 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3937 X509_STORE_up_ref(store
);
3938 SSL_CTX_set_cert_store(ctx
, store
);
3941 int SSL_want(const SSL
*s
)
3943 return (s
->rwstate
);
3947 * \brief Set the callback for generating temporary DH keys.
3948 * \param ctx the SSL context.
3949 * \param dh the callback
3952 #ifndef OPENSSL_NO_DH
3953 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3954 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3957 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3960 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3963 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3967 #ifndef OPENSSL_NO_PSK
3968 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3970 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3971 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3974 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3975 if (identity_hint
!= NULL
) {
3976 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3977 if (ctx
->cert
->psk_identity_hint
== NULL
)
3980 ctx
->cert
->psk_identity_hint
= NULL
;
3984 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3989 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3990 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3993 OPENSSL_free(s
->cert
->psk_identity_hint
);
3994 if (identity_hint
!= NULL
) {
3995 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3996 if (s
->cert
->psk_identity_hint
== NULL
)
3999 s
->cert
->psk_identity_hint
= NULL
;
4003 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4005 if (s
== NULL
|| s
->session
== NULL
)
4007 return (s
->session
->psk_identity_hint
);
4010 const char *SSL_get_psk_identity(const SSL
*s
)
4012 if (s
== NULL
|| s
->session
== NULL
)
4014 return (s
->session
->psk_identity
);
4017 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4019 s
->psk_client_callback
= cb
;
4022 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4024 ctx
->psk_client_callback
= cb
;
4027 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4029 s
->psk_server_callback
= cb
;
4032 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4034 ctx
->psk_server_callback
= cb
;
4038 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4040 s
->psk_find_session_cb
= cb
;
4043 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4044 SSL_psk_find_session_cb_func cb
)
4046 ctx
->psk_find_session_cb
= cb
;
4049 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4051 s
->psk_use_session_cb
= cb
;
4054 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4055 SSL_psk_use_session_cb_func cb
)
4057 ctx
->psk_use_session_cb
= cb
;
4060 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4061 void (*cb
) (int write_p
, int version
,
4062 int content_type
, const void *buf
,
4063 size_t len
, SSL
*ssl
, void *arg
))
4065 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4068 void SSL_set_msg_callback(SSL
*ssl
,
4069 void (*cb
) (int write_p
, int version
,
4070 int content_type
, const void *buf
,
4071 size_t len
, SSL
*ssl
, void *arg
))
4073 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4076 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4077 int (*cb
) (SSL
*ssl
,
4081 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4082 (void (*)(void))cb
);
4085 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4086 int (*cb
) (SSL
*ssl
,
4087 int is_forward_secure
))
4089 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4090 (void (*)(void))cb
);
4093 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4094 size_t (*cb
) (SSL
*ssl
, int type
,
4095 size_t len
, void *arg
))
4097 ctx
->record_padding_cb
= cb
;
4100 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4102 ctx
->record_padding_arg
= arg
;
4105 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4107 return ctx
->record_padding_arg
;
4110 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4112 /* block size of 0 or 1 is basically no padding */
4113 if (block_size
== 1)
4114 ctx
->block_padding
= 0;
4115 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4116 ctx
->block_padding
= block_size
;
4122 void SSL_set_record_padding_callback(SSL
*ssl
,
4123 size_t (*cb
) (SSL
*ssl
, int type
,
4124 size_t len
, void *arg
))
4126 ssl
->record_padding_cb
= cb
;
4129 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4131 ssl
->record_padding_arg
= arg
;
4134 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4136 return ssl
->record_padding_arg
;
4139 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4141 /* block size of 0 or 1 is basically no padding */
4142 if (block_size
== 1)
4143 ssl
->block_padding
= 0;
4144 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4145 ssl
->block_padding
= block_size
;
4152 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4153 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4154 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4155 * Returns the newly allocated ctx;
4158 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4160 ssl_clear_hash_ctx(hash
);
4161 *hash
= EVP_MD_CTX_new();
4162 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4163 EVP_MD_CTX_free(*hash
);
4170 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4173 EVP_MD_CTX_free(*hash
);
4177 /* Retrieve handshake hashes */
4178 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4181 EVP_MD_CTX
*ctx
= NULL
;
4182 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4183 int hashleni
= EVP_MD_CTX_size(hdgst
);
4186 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4189 ctx
= EVP_MD_CTX_new();
4193 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4194 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4197 *hashlen
= hashleni
;
4201 EVP_MD_CTX_free(ctx
);
4205 int SSL_session_reused(SSL
*s
)
4210 int SSL_is_server(const SSL
*s
)
4215 #if OPENSSL_API_COMPAT < 0x10100000L
4216 void SSL_set_debug(SSL
*s
, int debug
)
4218 /* Old function was do-nothing anyway... */
4224 void SSL_set_security_level(SSL
*s
, int level
)
4226 s
->cert
->sec_level
= level
;
4229 int SSL_get_security_level(const SSL
*s
)
4231 return s
->cert
->sec_level
;
4234 void SSL_set_security_callback(SSL
*s
,
4235 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4236 int op
, int bits
, int nid
,
4237 void *other
, void *ex
))
4239 s
->cert
->sec_cb
= cb
;
4242 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4243 const SSL_CTX
*ctx
, int op
,
4244 int bits
, int nid
, void *other
,
4246 return s
->cert
->sec_cb
;
4249 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4251 s
->cert
->sec_ex
= ex
;
4254 void *SSL_get0_security_ex_data(const SSL
*s
)
4256 return s
->cert
->sec_ex
;
4259 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4261 ctx
->cert
->sec_level
= level
;
4264 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4266 return ctx
->cert
->sec_level
;
4269 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4270 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4271 int op
, int bits
, int nid
,
4272 void *other
, void *ex
))
4274 ctx
->cert
->sec_cb
= cb
;
4277 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4283 return ctx
->cert
->sec_cb
;
4286 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4288 ctx
->cert
->sec_ex
= ex
;
4291 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4293 return ctx
->cert
->sec_ex
;
4297 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4298 * can return unsigned long, instead of the generic long return value from the
4299 * control interface.
4301 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4303 return ctx
->options
;
4306 unsigned long SSL_get_options(const SSL
*s
)
4311 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4313 return ctx
->options
|= op
;
4316 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4318 return s
->options
|= op
;
4321 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4323 return ctx
->options
&= ~op
;
4326 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4328 return s
->options
&= ~op
;
4331 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4333 return s
->verified_chain
;
4336 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4338 #ifndef OPENSSL_NO_CT
4341 * Moves SCTs from the |src| stack to the |dst| stack.
4342 * The source of each SCT will be set to |origin|.
4343 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4345 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4347 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4348 sct_source_t origin
)
4354 *dst
= sk_SCT_new_null();
4356 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4361 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4362 if (SCT_set_source(sct
, origin
) != 1)
4365 if (sk_SCT_push(*dst
, sct
) <= 0)
4373 sk_SCT_push(src
, sct
); /* Put the SCT back */
4378 * Look for data collected during ServerHello and parse if found.
4379 * Returns the number of SCTs extracted.
4381 static int ct_extract_tls_extension_scts(SSL
*s
)
4383 int scts_extracted
= 0;
4385 if (s
->ext
.scts
!= NULL
) {
4386 const unsigned char *p
= s
->ext
.scts
;
4387 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4389 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4391 SCT_LIST_free(scts
);
4394 return scts_extracted
;
4398 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4399 * contains an SCT X509 extension. They will be stored in |s->scts|.
4401 * - The number of SCTs extracted, assuming an OCSP response exists.
4402 * - 0 if no OCSP response exists or it contains no SCTs.
4403 * - A negative integer if an error occurs.
4405 static int ct_extract_ocsp_response_scts(SSL
*s
)
4407 # ifndef OPENSSL_NO_OCSP
4408 int scts_extracted
= 0;
4409 const unsigned char *p
;
4410 OCSP_BASICRESP
*br
= NULL
;
4411 OCSP_RESPONSE
*rsp
= NULL
;
4412 STACK_OF(SCT
) *scts
= NULL
;
4415 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4418 p
= s
->ext
.ocsp
.resp
;
4419 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4423 br
= OCSP_response_get1_basic(rsp
);
4427 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4428 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4434 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4436 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4437 if (scts_extracted
< 0)
4441 SCT_LIST_free(scts
);
4442 OCSP_BASICRESP_free(br
);
4443 OCSP_RESPONSE_free(rsp
);
4444 return scts_extracted
;
4446 /* Behave as if no OCSP response exists */
4452 * Attempts to extract SCTs from the peer certificate.
4453 * Return the number of SCTs extracted, or a negative integer if an error
4456 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4458 int scts_extracted
= 0;
4459 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4462 STACK_OF(SCT
) *scts
=
4463 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4466 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4468 SCT_LIST_free(scts
);
4471 return scts_extracted
;
4475 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4476 * response (if it exists) and X509v3 extensions in the certificate.
4477 * Returns NULL if an error occurs.
4479 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4481 if (!s
->scts_parsed
) {
4482 if (ct_extract_tls_extension_scts(s
) < 0 ||
4483 ct_extract_ocsp_response_scts(s
) < 0 ||
4484 ct_extract_x509v3_extension_scts(s
) < 0)
4494 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4495 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4500 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4501 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4503 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4506 for (i
= 0; i
< count
; ++i
) {
4507 SCT
*sct
= sk_SCT_value(scts
, i
);
4508 int status
= SCT_get_validation_status(sct
);
4510 if (status
== SCT_VALIDATION_STATUS_VALID
)
4513 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4517 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4521 * Since code exists that uses the custom extension handler for CT, look
4522 * for this and throw an error if they have already registered to use CT.
4524 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4525 TLSEXT_TYPE_signed_certificate_timestamp
))
4527 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4528 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4532 if (callback
!= NULL
) {
4534 * If we are validating CT, then we MUST accept SCTs served via OCSP
4536 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4540 s
->ct_validation_callback
= callback
;
4541 s
->ct_validation_callback_arg
= arg
;
4546 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4547 ssl_ct_validation_cb callback
, void *arg
)
4550 * Since code exists that uses the custom extension handler for CT, look for
4551 * this and throw an error if they have already registered to use CT.
4553 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4554 TLSEXT_TYPE_signed_certificate_timestamp
))
4556 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4557 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4561 ctx
->ct_validation_callback
= callback
;
4562 ctx
->ct_validation_callback_arg
= arg
;
4566 int SSL_ct_is_enabled(const SSL
*s
)
4568 return s
->ct_validation_callback
!= NULL
;
4571 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4573 return ctx
->ct_validation_callback
!= NULL
;
4576 int ssl_validate_ct(SSL
*s
)
4579 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4581 SSL_DANE
*dane
= &s
->dane
;
4582 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4583 const STACK_OF(SCT
) *scts
;
4586 * If no callback is set, the peer is anonymous, or its chain is invalid,
4587 * skip SCT validation - just return success. Applications that continue
4588 * handshakes without certificates, with unverified chains, or pinned leaf
4589 * certificates are outside the scope of the WebPKI and CT.
4591 * The above exclusions notwithstanding the vast majority of peers will
4592 * have rather ordinary certificate chains validated by typical
4593 * applications that perform certificate verification and therefore will
4594 * process SCTs when enabled.
4596 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4597 s
->verify_result
!= X509_V_OK
||
4598 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4602 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4603 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4605 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4606 switch (dane
->mtlsa
->usage
) {
4607 case DANETLS_USAGE_DANE_TA
:
4608 case DANETLS_USAGE_DANE_EE
:
4613 ctx
= CT_POLICY_EVAL_CTX_new();
4615 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4619 issuer
= sk_X509_value(s
->verified_chain
, 1);
4620 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4621 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4622 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4623 CT_POLICY_EVAL_CTX_set_time(
4624 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4626 scts
= SSL_get0_peer_scts(s
);
4629 * This function returns success (> 0) only when all the SCTs are valid, 0
4630 * when some are invalid, and < 0 on various internal errors (out of
4631 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4632 * reason to abort the handshake, that decision is up to the callback.
4633 * Therefore, we error out only in the unexpected case that the return
4634 * value is negative.
4636 * XXX: One might well argue that the return value of this function is an
4637 * unfortunate design choice. Its job is only to determine the validation
4638 * status of each of the provided SCTs. So long as it correctly separates
4639 * the wheat from the chaff it should return success. Failure in this case
4640 * ought to correspond to an inability to carry out its duties.
4642 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4643 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4647 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4649 ret
= 0; /* This function returns 0 on failure */
4652 CT_POLICY_EVAL_CTX_free(ctx
);
4654 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4655 * failure return code here. Also the application may wish the complete
4656 * the handshake, and then disconnect cleanly at a higher layer, after
4657 * checking the verification status of the completed connection.
4659 * We therefore force a certificate verification failure which will be
4660 * visible via SSL_get_verify_result() and cached as part of any resumed
4663 * Note: the permissive callback is for information gathering only, always
4664 * returns success, and does not affect verification status. Only the
4665 * strict callback or a custom application-specified callback can trigger
4666 * connection failure or record a verification error.
4669 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4673 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4675 switch (validation_mode
) {
4677 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4679 case SSL_CT_VALIDATION_PERMISSIVE
:
4680 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4681 case SSL_CT_VALIDATION_STRICT
:
4682 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4686 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4688 switch (validation_mode
) {
4690 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4692 case SSL_CT_VALIDATION_PERMISSIVE
:
4693 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4694 case SSL_CT_VALIDATION_STRICT
:
4695 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4699 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4701 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4704 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4706 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4709 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4711 CTLOG_STORE_free(ctx
->ctlog_store
);
4712 ctx
->ctlog_store
= logs
;
4715 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4717 return ctx
->ctlog_store
;
4720 #endif /* OPENSSL_NO_CT */
4722 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4725 c
->client_hello_cb
= cb
;
4726 c
->client_hello_cb_arg
= arg
;
4729 int SSL_client_hello_isv2(SSL
*s
)
4731 if (s
->clienthello
== NULL
)
4733 return s
->clienthello
->isv2
;
4736 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4738 if (s
->clienthello
== NULL
)
4740 return s
->clienthello
->legacy_version
;
4743 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4745 if (s
->clienthello
== NULL
)
4748 *out
= s
->clienthello
->random
;
4749 return SSL3_RANDOM_SIZE
;
4752 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4754 if (s
->clienthello
== NULL
)
4757 *out
= s
->clienthello
->session_id
;
4758 return s
->clienthello
->session_id_len
;
4761 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4763 if (s
->clienthello
== NULL
)
4766 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4767 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4770 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4772 if (s
->clienthello
== NULL
)
4775 *out
= s
->clienthello
->compressions
;
4776 return s
->clienthello
->compressions_len
;
4779 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4785 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4787 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4788 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4792 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4793 if (present
== NULL
)
4795 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4796 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4798 if (ext
->received_order
>= num
)
4800 present
[ext
->received_order
] = ext
->type
;
4807 OPENSSL_free(present
);
4811 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4817 if (s
->clienthello
== NULL
)
4819 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4820 r
= s
->clienthello
->pre_proc_exts
+ i
;
4821 if (r
->present
&& r
->type
== type
) {
4823 *out
= PACKET_data(&r
->data
);
4825 *outlen
= PACKET_remaining(&r
->data
);
4832 int SSL_free_buffers(SSL
*ssl
)
4834 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4836 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4839 RECORD_LAYER_release(rl
);
4843 int SSL_alloc_buffers(SSL
*ssl
)
4845 return ssl3_setup_buffers(ssl
);
4848 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4850 ctx
->keylog_callback
= cb
;
4853 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4855 return ctx
->keylog_callback
;
4858 static int nss_keylog_int(const char *prefix
,
4860 const uint8_t *parameter_1
,
4861 size_t parameter_1_len
,
4862 const uint8_t *parameter_2
,
4863 size_t parameter_2_len
)
4866 char *cursor
= NULL
;
4871 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4874 * Our output buffer will contain the following strings, rendered with
4875 * space characters in between, terminated by a NULL character: first the
4876 * prefix, then the first parameter, then the second parameter. The
4877 * meaning of each parameter depends on the specific key material being
4878 * logged. Note that the first and second parameters are encoded in
4879 * hexadecimal, so we need a buffer that is twice their lengths.
4881 prefix_len
= strlen(prefix
);
4882 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4883 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4884 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4888 strcpy(cursor
, prefix
);
4889 cursor
+= prefix_len
;
4892 for (i
= 0; i
< parameter_1_len
; i
++) {
4893 sprintf(cursor
, "%02x", parameter_1
[i
]);
4898 for (i
= 0; i
< parameter_2_len
; i
++) {
4899 sprintf(cursor
, "%02x", parameter_2
[i
]);
4904 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4910 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4911 const uint8_t *encrypted_premaster
,
4912 size_t encrypted_premaster_len
,
4913 const uint8_t *premaster
,
4914 size_t premaster_len
)
4916 if (encrypted_premaster_len
< 8) {
4917 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4921 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4922 return nss_keylog_int("RSA",
4924 encrypted_premaster
,
4930 int ssl_log_secret(SSL
*ssl
,
4932 const uint8_t *secret
,
4935 return nss_keylog_int(label
,
4937 ssl
->s3
->client_random
,
4943 #define SSLV2_CIPHER_LEN 3
4945 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4950 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4952 if (PACKET_remaining(cipher_suites
) == 0) {
4953 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4954 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4958 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4959 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4960 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4961 *al
= SSL_AD_DECODE_ERROR
;
4965 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4966 s
->s3
->tmp
.ciphers_raw
= NULL
;
4967 s
->s3
->tmp
.ciphers_rawlen
= 0;
4970 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4971 PACKET sslv2ciphers
= *cipher_suites
;
4972 unsigned int leadbyte
;
4976 * We store the raw ciphers list in SSLv3+ format so we need to do some
4977 * preprocessing to convert the list first. If there are any SSLv2 only
4978 * ciphersuites with a non-zero leading byte then we are going to
4979 * slightly over allocate because we won't store those. But that isn't a
4982 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4983 s
->s3
->tmp
.ciphers_raw
= raw
;
4985 *al
= SSL_AD_INTERNAL_ERROR
;
4988 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4989 PACKET_remaining(&sslv2ciphers
) > 0;
4990 raw
+= TLS_CIPHER_LEN
) {
4991 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4993 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4996 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4997 *al
= SSL_AD_DECODE_ERROR
;
4998 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4999 s
->s3
->tmp
.ciphers_raw
= NULL
;
5000 s
->s3
->tmp
.ciphers_rawlen
= 0;
5004 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5006 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5007 &s
->s3
->tmp
.ciphers_rawlen
)) {
5008 *al
= SSL_AD_INTERNAL_ERROR
;
5016 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5017 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5018 STACK_OF(SSL_CIPHER
) **scsvs
)
5023 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5025 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5028 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5029 STACK_OF(SSL_CIPHER
) **skp
,
5030 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5031 int sslv2format
, int *al
)
5033 const SSL_CIPHER
*c
;
5034 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5035 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5037 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5038 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5040 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5042 if (PACKET_remaining(cipher_suites
) == 0) {
5043 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5044 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5048 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5049 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5050 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5051 *al
= SSL_AD_DECODE_ERROR
;
5055 sk
= sk_SSL_CIPHER_new_null();
5056 scsvs
= sk_SSL_CIPHER_new_null();
5057 if (sk
== NULL
|| scsvs
== NULL
) {
5058 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5059 *al
= SSL_AD_INTERNAL_ERROR
;
5063 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5065 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5066 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5067 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5069 if (sslv2format
&& cipher
[0] != '\0')
5072 /* For SSLv2-compat, ignore leading 0-byte. */
5073 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5075 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5076 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5077 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5078 *al
= SSL_AD_INTERNAL_ERROR
;
5083 if (PACKET_remaining(cipher_suites
) > 0) {
5084 *al
= SSL_AD_DECODE_ERROR
;
5085 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5092 sk_SSL_CIPHER_free(sk
);
5093 if (scsvs_out
!= NULL
)
5096 sk_SSL_CIPHER_free(scsvs
);
5099 sk_SSL_CIPHER_free(sk
);
5100 sk_SSL_CIPHER_free(scsvs
);
5104 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5106 ctx
->max_early_data
= max_early_data
;
5111 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5113 return ctx
->max_early_data
;
5116 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5118 s
->max_early_data
= max_early_data
;
5123 uint32_t SSL_get_max_early_data(const SSL
*s
)
5125 return s
->max_early_data
;
5128 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5130 if (s
->drbg
!= NULL
)
5131 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5132 return RAND_bytes(rnd
, (int)size
);