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()) {
636 s
->drbg
= RAND_DRBG_new(NID_aes_128_ctr
, RAND_DRBG_FLAG_CTR_USE_DF
,
637 RAND_DRBG_get0_global());
639 || RAND_DRBG_instantiate(s
->drbg
, NULL
, 0) == 0) {
640 CRYPTO_THREAD_lock_free(s
->lock
);
645 RECORD_LAYER_init(&s
->rlayer
, s
);
647 s
->options
= ctx
->options
;
648 s
->dane
.flags
= ctx
->dane
.flags
;
649 s
->min_proto_version
= ctx
->min_proto_version
;
650 s
->max_proto_version
= ctx
->max_proto_version
;
652 s
->max_cert_list
= ctx
->max_cert_list
;
654 s
->max_early_data
= ctx
->max_early_data
;
657 * Earlier library versions used to copy the pointer to the CERT, not
658 * its contents; only when setting new parameters for the per-SSL
659 * copy, ssl_cert_new would be called (and the direct reference to
660 * the per-SSL_CTX settings would be lost, but those still were
661 * indirectly accessed for various purposes, and for that reason they
662 * used to be known as s->ctx->default_cert). Now we don't look at the
663 * SSL_CTX's CERT after having duplicated it once.
665 s
->cert
= ssl_cert_dup(ctx
->cert
);
669 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
670 s
->msg_callback
= ctx
->msg_callback
;
671 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
672 s
->verify_mode
= ctx
->verify_mode
;
673 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
674 s
->record_padding_cb
= ctx
->record_padding_cb
;
675 s
->record_padding_arg
= ctx
->record_padding_arg
;
676 s
->block_padding
= ctx
->block_padding
;
677 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
678 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
680 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
681 s
->verify_callback
= ctx
->default_verify_callback
;
682 s
->generate_session_id
= ctx
->generate_session_id
;
684 s
->param
= X509_VERIFY_PARAM_new();
685 if (s
->param
== NULL
)
687 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
688 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
689 s
->max_send_fragment
= ctx
->max_send_fragment
;
690 s
->split_send_fragment
= ctx
->split_send_fragment
;
691 s
->max_pipelines
= ctx
->max_pipelines
;
692 if (s
->max_pipelines
> 1)
693 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
694 if (ctx
->default_read_buf_len
> 0)
695 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
700 s
->ext
.debug_arg
= NULL
;
701 s
->ext
.ticket_expected
= 0;
702 s
->ext
.status_type
= ctx
->ext
.status_type
;
703 s
->ext
.status_expected
= 0;
704 s
->ext
.ocsp
.ids
= NULL
;
705 s
->ext
.ocsp
.exts
= NULL
;
706 s
->ext
.ocsp
.resp
= NULL
;
707 s
->ext
.ocsp
.resp_len
= 0;
709 s
->session_ctx
= ctx
;
710 #ifndef OPENSSL_NO_EC
711 if (ctx
->ext
.ecpointformats
) {
712 s
->ext
.ecpointformats
=
713 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
714 ctx
->ext
.ecpointformats_len
);
715 if (!s
->ext
.ecpointformats
)
717 s
->ext
.ecpointformats_len
=
718 ctx
->ext
.ecpointformats_len
;
720 if (ctx
->ext
.supportedgroups
) {
721 s
->ext
.supportedgroups
=
722 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
723 ctx
->ext
.supportedgroups_len
724 * sizeof(*ctx
->ext
.supportedgroups
));
725 if (!s
->ext
.supportedgroups
)
727 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
730 #ifndef OPENSSL_NO_NEXTPROTONEG
734 if (s
->ctx
->ext
.alpn
) {
735 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
736 if (s
->ext
.alpn
== NULL
)
738 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
739 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
742 s
->verified_chain
= NULL
;
743 s
->verify_result
= X509_V_OK
;
745 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
746 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
748 s
->method
= ctx
->method
;
750 s
->key_update
= SSL_KEY_UPDATE_NONE
;
752 if (!s
->method
->ssl_new(s
))
755 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
760 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
763 #ifndef OPENSSL_NO_PSK
764 s
->psk_client_callback
= ctx
->psk_client_callback
;
765 s
->psk_server_callback
= ctx
->psk_server_callback
;
767 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
768 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
772 #ifndef OPENSSL_NO_CT
773 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
774 ctx
->ct_validation_callback_arg
))
781 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
785 int SSL_is_dtls(const SSL
*s
)
787 return SSL_IS_DTLS(s
) ? 1 : 0;
790 int SSL_up_ref(SSL
*s
)
794 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
797 REF_PRINT_COUNT("SSL", s
);
798 REF_ASSERT_ISNT(i
< 2);
799 return ((i
> 1) ? 1 : 0);
802 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
803 unsigned int sid_ctx_len
)
805 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
806 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
807 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
810 ctx
->sid_ctx_length
= sid_ctx_len
;
811 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
816 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
817 unsigned int sid_ctx_len
)
819 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
820 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
821 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
824 ssl
->sid_ctx_length
= sid_ctx_len
;
825 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
830 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
832 CRYPTO_THREAD_write_lock(ctx
->lock
);
833 ctx
->generate_session_id
= cb
;
834 CRYPTO_THREAD_unlock(ctx
->lock
);
838 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
840 CRYPTO_THREAD_write_lock(ssl
->lock
);
841 ssl
->generate_session_id
= cb
;
842 CRYPTO_THREAD_unlock(ssl
->lock
);
846 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
850 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
851 * we can "construct" a session to give us the desired check - i.e. to
852 * find if there's a session in the hash table that would conflict with
853 * any new session built out of this id/id_len and the ssl_version in use
858 if (id_len
> sizeof r
.session_id
)
861 r
.ssl_version
= ssl
->version
;
862 r
.session_id_length
= id_len
;
863 memcpy(r
.session_id
, id
, id_len
);
865 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
866 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
867 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
871 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
873 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
876 int SSL_set_purpose(SSL
*s
, int purpose
)
878 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
881 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
883 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
886 int SSL_set_trust(SSL
*s
, int trust
)
888 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
891 int SSL_set1_host(SSL
*s
, const char *hostname
)
893 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
896 int SSL_add1_host(SSL
*s
, const char *hostname
)
898 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
901 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
903 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
906 const char *SSL_get0_peername(SSL
*s
)
908 return X509_VERIFY_PARAM_get0_peername(s
->param
);
911 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
913 return dane_ctx_enable(&ctx
->dane
);
916 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
918 unsigned long orig
= ctx
->dane
.flags
;
920 ctx
->dane
.flags
|= flags
;
924 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
926 unsigned long orig
= ctx
->dane
.flags
;
928 ctx
->dane
.flags
&= ~flags
;
932 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
934 SSL_DANE
*dane
= &s
->dane
;
936 if (s
->ctx
->dane
.mdmax
== 0) {
937 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
940 if (dane
->trecs
!= NULL
) {
941 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
946 * Default SNI name. This rejects empty names, while set1_host below
947 * accepts them and disables host name checks. To avoid side-effects with
948 * invalid input, set the SNI name first.
950 if (s
->ext
.hostname
== NULL
) {
951 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
952 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
957 /* Primary RFC6125 reference identifier */
958 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
959 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
965 dane
->dctx
= &s
->ctx
->dane
;
966 dane
->trecs
= sk_danetls_record_new_null();
968 if (dane
->trecs
== NULL
) {
969 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
975 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
977 unsigned long orig
= ssl
->dane
.flags
;
979 ssl
->dane
.flags
|= flags
;
983 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
985 unsigned long orig
= ssl
->dane
.flags
;
987 ssl
->dane
.flags
&= ~flags
;
991 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
993 SSL_DANE
*dane
= &s
->dane
;
995 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
999 *mcert
= dane
->mcert
;
1001 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1006 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1007 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1009 SSL_DANE
*dane
= &s
->dane
;
1011 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1015 *usage
= dane
->mtlsa
->usage
;
1017 *selector
= dane
->mtlsa
->selector
;
1019 *mtype
= dane
->mtlsa
->mtype
;
1021 *data
= dane
->mtlsa
->data
;
1023 *dlen
= dane
->mtlsa
->dlen
;
1028 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1033 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1034 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1036 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1039 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1042 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1045 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1047 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1050 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1052 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1055 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1060 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1065 void SSL_certs_clear(SSL
*s
)
1067 ssl_cert_clear_certs(s
->cert
);
1070 void SSL_free(SSL
*s
)
1077 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1078 REF_PRINT_COUNT("SSL", s
);
1081 REF_ASSERT_ISNT(i
< 0);
1083 X509_VERIFY_PARAM_free(s
->param
);
1084 dane_final(&s
->dane
);
1085 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1087 /* Ignore return value */
1088 ssl_free_wbio_buffer(s
);
1090 BIO_free_all(s
->wbio
);
1091 BIO_free_all(s
->rbio
);
1093 BUF_MEM_free(s
->init_buf
);
1095 /* add extra stuff */
1096 sk_SSL_CIPHER_free(s
->cipher_list
);
1097 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1099 /* Make the next call work :-) */
1100 if (s
->session
!= NULL
) {
1101 ssl_clear_bad_session(s
);
1102 SSL_SESSION_free(s
->session
);
1104 SSL_SESSION_free(s
->psksession
);
1105 OPENSSL_free(s
->psksession_id
);
1109 ssl_cert_free(s
->cert
);
1110 /* Free up if allocated */
1112 OPENSSL_free(s
->ext
.hostname
);
1113 SSL_CTX_free(s
->session_ctx
);
1114 #ifndef OPENSSL_NO_EC
1115 OPENSSL_free(s
->ext
.ecpointformats
);
1116 OPENSSL_free(s
->ext
.supportedgroups
);
1117 #endif /* OPENSSL_NO_EC */
1118 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1119 #ifndef OPENSSL_NO_OCSP
1120 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1122 #ifndef OPENSSL_NO_CT
1123 SCT_LIST_free(s
->scts
);
1124 OPENSSL_free(s
->ext
.scts
);
1126 OPENSSL_free(s
->ext
.ocsp
.resp
);
1127 OPENSSL_free(s
->ext
.alpn
);
1128 OPENSSL_free(s
->ext
.tls13_cookie
);
1129 OPENSSL_free(s
->clienthello
);
1131 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1133 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1135 if (s
->method
!= NULL
)
1136 s
->method
->ssl_free(s
);
1138 RECORD_LAYER_release(&s
->rlayer
);
1140 SSL_CTX_free(s
->ctx
);
1142 ASYNC_WAIT_CTX_free(s
->waitctx
);
1144 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1145 OPENSSL_free(s
->ext
.npn
);
1148 #ifndef OPENSSL_NO_SRTP
1149 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1152 RAND_DRBG_free(s
->drbg
);
1153 CRYPTO_THREAD_lock_free(s
->lock
);
1158 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1160 BIO_free_all(s
->rbio
);
1164 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1167 * If the output buffering BIO is still in place, remove it
1169 if (s
->bbio
!= NULL
)
1170 s
->wbio
= BIO_pop(s
->wbio
);
1172 BIO_free_all(s
->wbio
);
1175 /* Re-attach |bbio| to the new |wbio|. */
1176 if (s
->bbio
!= NULL
)
1177 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1180 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1183 * For historical reasons, this function has many different cases in
1184 * ownership handling.
1187 /* If nothing has changed, do nothing */
1188 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1192 * If the two arguments are equal then one fewer reference is granted by the
1193 * caller than we want to take
1195 if (rbio
!= NULL
&& rbio
== wbio
)
1199 * If only the wbio is changed only adopt one reference.
1201 if (rbio
== SSL_get_rbio(s
)) {
1202 SSL_set0_wbio(s
, wbio
);
1206 * There is an asymmetry here for historical reasons. If only the rbio is
1207 * changed AND the rbio and wbio were originally different, then we only
1208 * adopt one reference.
1210 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1211 SSL_set0_rbio(s
, rbio
);
1215 /* Otherwise, adopt both references. */
1216 SSL_set0_rbio(s
, rbio
);
1217 SSL_set0_wbio(s
, wbio
);
1220 BIO
*SSL_get_rbio(const SSL
*s
)
1225 BIO
*SSL_get_wbio(const SSL
*s
)
1227 if (s
->bbio
!= NULL
) {
1229 * If |bbio| is active, the true caller-configured BIO is its
1232 return BIO_next(s
->bbio
);
1237 int SSL_get_fd(const SSL
*s
)
1239 return SSL_get_rfd(s
);
1242 int SSL_get_rfd(const SSL
*s
)
1247 b
= SSL_get_rbio(s
);
1248 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1250 BIO_get_fd(r
, &ret
);
1254 int SSL_get_wfd(const SSL
*s
)
1259 b
= SSL_get_wbio(s
);
1260 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1262 BIO_get_fd(r
, &ret
);
1266 #ifndef OPENSSL_NO_SOCK
1267 int SSL_set_fd(SSL
*s
, int fd
)
1272 bio
= BIO_new(BIO_s_socket());
1275 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1278 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1279 SSL_set_bio(s
, bio
, bio
);
1285 int SSL_set_wfd(SSL
*s
, int fd
)
1287 BIO
*rbio
= SSL_get_rbio(s
);
1289 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1290 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1291 BIO
*bio
= BIO_new(BIO_s_socket());
1294 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1297 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1298 SSL_set0_wbio(s
, bio
);
1301 SSL_set0_wbio(s
, rbio
);
1306 int SSL_set_rfd(SSL
*s
, int fd
)
1308 BIO
*wbio
= SSL_get_wbio(s
);
1310 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1311 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1312 BIO
*bio
= BIO_new(BIO_s_socket());
1315 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1318 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1319 SSL_set0_rbio(s
, bio
);
1322 SSL_set0_rbio(s
, wbio
);
1329 /* return length of latest Finished message we sent, copy to 'buf' */
1330 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1334 if (s
->s3
!= NULL
) {
1335 ret
= s
->s3
->tmp
.finish_md_len
;
1338 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1343 /* return length of latest Finished message we expected, copy to 'buf' */
1344 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1348 if (s
->s3
!= NULL
) {
1349 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1352 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1357 int SSL_get_verify_mode(const SSL
*s
)
1359 return (s
->verify_mode
);
1362 int SSL_get_verify_depth(const SSL
*s
)
1364 return X509_VERIFY_PARAM_get_depth(s
->param
);
1367 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1368 return (s
->verify_callback
);
1371 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1373 return (ctx
->verify_mode
);
1376 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1378 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1381 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1382 return (ctx
->default_verify_callback
);
1385 void SSL_set_verify(SSL
*s
, int mode
,
1386 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1388 s
->verify_mode
= mode
;
1389 if (callback
!= NULL
)
1390 s
->verify_callback
= callback
;
1393 void SSL_set_verify_depth(SSL
*s
, int depth
)
1395 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1398 void SSL_set_read_ahead(SSL
*s
, int yes
)
1400 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1403 int SSL_get_read_ahead(const SSL
*s
)
1405 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1408 int SSL_pending(const SSL
*s
)
1410 size_t pending
= s
->method
->ssl_pending(s
);
1413 * SSL_pending cannot work properly if read-ahead is enabled
1414 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1415 * impossible to fix since SSL_pending cannot report errors that may be
1416 * observed while scanning the new data. (Note that SSL_pending() is
1417 * often used as a boolean value, so we'd better not return -1.)
1419 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1420 * we just return INT_MAX.
1422 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1425 int SSL_has_pending(const SSL
*s
)
1428 * Similar to SSL_pending() but returns a 1 to indicate that we have
1429 * unprocessed data available or 0 otherwise (as opposed to the number of
1430 * bytes available). Unlike SSL_pending() this will take into account
1431 * read_ahead data. A 1 return simply indicates that we have unprocessed
1432 * data. That data may not result in any application data, or we may fail
1433 * to parse the records for some reason.
1435 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1438 return RECORD_LAYER_read_pending(&s
->rlayer
);
1441 X509
*SSL_get_peer_certificate(const SSL
*s
)
1445 if ((s
== NULL
) || (s
->session
== NULL
))
1448 r
= s
->session
->peer
;
1458 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1462 if ((s
== NULL
) || (s
->session
== NULL
))
1465 r
= s
->session
->peer_chain
;
1468 * If we are a client, cert_chain includes the peer's own certificate; if
1469 * we are a server, it does not.
1476 * Now in theory, since the calling process own 't' it should be safe to
1477 * modify. We need to be able to read f without being hassled
1479 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1482 /* Do we need to to SSL locking? */
1483 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1488 * what if we are setup for one protocol version but want to talk another
1490 if (t
->method
!= f
->method
) {
1491 t
->method
->ssl_free(t
);
1492 t
->method
= f
->method
;
1493 if (t
->method
->ssl_new(t
) == 0)
1497 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1498 ssl_cert_free(t
->cert
);
1500 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1507 /* Fix this so it checks all the valid key/cert options */
1508 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1510 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1511 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1514 if (ctx
->cert
->key
->privatekey
== NULL
) {
1515 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1518 return (X509_check_private_key
1519 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1522 /* Fix this function so that it takes an optional type parameter */
1523 int SSL_check_private_key(const SSL
*ssl
)
1526 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1529 if (ssl
->cert
->key
->x509
== NULL
) {
1530 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1533 if (ssl
->cert
->key
->privatekey
== NULL
) {
1534 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1537 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1538 ssl
->cert
->key
->privatekey
));
1541 int SSL_waiting_for_async(SSL
*s
)
1549 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1551 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1555 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1558 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1559 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1561 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1565 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1569 int SSL_accept(SSL
*s
)
1571 if (s
->handshake_func
== NULL
) {
1572 /* Not properly initialized yet */
1573 SSL_set_accept_state(s
);
1576 return SSL_do_handshake(s
);
1579 int SSL_connect(SSL
*s
)
1581 if (s
->handshake_func
== NULL
) {
1582 /* Not properly initialized yet */
1583 SSL_set_connect_state(s
);
1586 return SSL_do_handshake(s
);
1589 long SSL_get_default_timeout(const SSL
*s
)
1591 return (s
->method
->get_timeout());
1594 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1595 int (*func
) (void *))
1598 if (s
->waitctx
== NULL
) {
1599 s
->waitctx
= ASYNC_WAIT_CTX_new();
1600 if (s
->waitctx
== NULL
)
1603 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1604 sizeof(struct ssl_async_args
))) {
1606 s
->rwstate
= SSL_NOTHING
;
1607 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1610 s
->rwstate
= SSL_ASYNC_PAUSED
;
1613 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1619 s
->rwstate
= SSL_NOTHING
;
1620 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1621 /* Shouldn't happen */
1626 static int ssl_io_intern(void *vargs
)
1628 struct ssl_async_args
*args
;
1633 args
= (struct ssl_async_args
*)vargs
;
1637 switch (args
->type
) {
1639 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1641 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1643 return args
->f
.func_other(s
);
1648 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1650 if (s
->handshake_func
== NULL
) {
1651 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1655 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1656 s
->rwstate
= SSL_NOTHING
;
1660 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1661 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1662 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1666 * If we are a client and haven't received the ServerHello etc then we
1669 ossl_statem_check_finish_init(s
, 0);
1671 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1672 struct ssl_async_args args
;
1678 args
.type
= READFUNC
;
1679 args
.f
.func_read
= s
->method
->ssl_read
;
1681 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1682 *readbytes
= s
->asyncrw
;
1685 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1689 int SSL_read(SSL
*s
, void *buf
, int num
)
1695 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1699 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1702 * The cast is safe here because ret should be <= INT_MAX because num is
1706 ret
= (int)readbytes
;
1711 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1713 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1720 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1725 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1726 return SSL_READ_EARLY_DATA_ERROR
;
1729 switch (s
->early_data_state
) {
1730 case SSL_EARLY_DATA_NONE
:
1731 if (!SSL_in_before(s
)) {
1732 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1733 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1734 return SSL_READ_EARLY_DATA_ERROR
;
1738 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1739 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1740 ret
= SSL_accept(s
);
1743 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1744 return SSL_READ_EARLY_DATA_ERROR
;
1748 case SSL_EARLY_DATA_READ_RETRY
:
1749 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1750 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1751 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1753 * State machine will update early_data_state to
1754 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1757 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1758 != SSL_EARLY_DATA_FINISHED_READING
)) {
1759 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1760 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1761 : SSL_READ_EARLY_DATA_ERROR
;
1764 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1767 return SSL_READ_EARLY_DATA_FINISH
;
1770 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1771 return SSL_READ_EARLY_DATA_ERROR
;
1775 int SSL_get_early_data_status(const SSL
*s
)
1777 return s
->ext
.early_data
;
1780 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1782 if (s
->handshake_func
== NULL
) {
1783 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1787 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1790 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1791 struct ssl_async_args args
;
1797 args
.type
= READFUNC
;
1798 args
.f
.func_read
= s
->method
->ssl_peek
;
1800 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1801 *readbytes
= s
->asyncrw
;
1804 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1808 int SSL_peek(SSL
*s
, void *buf
, int num
)
1814 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1818 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1821 * The cast is safe here because ret should be <= INT_MAX because num is
1825 ret
= (int)readbytes
;
1831 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1833 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1840 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1842 if (s
->handshake_func
== NULL
) {
1843 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1847 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1848 s
->rwstate
= SSL_NOTHING
;
1849 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1853 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1854 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1855 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1856 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1859 /* If we are a client and haven't sent the Finished we better do that */
1860 ossl_statem_check_finish_init(s
, 1);
1862 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1864 struct ssl_async_args args
;
1867 args
.buf
= (void *)buf
;
1869 args
.type
= WRITEFUNC
;
1870 args
.f
.func_write
= s
->method
->ssl_write
;
1872 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1873 *written
= s
->asyncrw
;
1876 return s
->method
->ssl_write(s
, buf
, num
, written
);
1880 int SSL_write(SSL
*s
, const void *buf
, int num
)
1886 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1890 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1893 * The cast is safe here because ret should be <= INT_MAX because num is
1902 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1904 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1911 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1913 int ret
, early_data_state
;
1915 switch (s
->early_data_state
) {
1916 case SSL_EARLY_DATA_NONE
:
1918 || !SSL_in_before(s
)
1919 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1920 && (s
->psk_use_session_cb
== NULL
))) {
1921 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1922 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1927 case SSL_EARLY_DATA_CONNECT_RETRY
:
1928 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1929 ret
= SSL_connect(s
);
1932 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1937 case SSL_EARLY_DATA_WRITE_RETRY
:
1938 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1939 ret
= SSL_write_ex(s
, buf
, num
, written
);
1940 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1943 case SSL_EARLY_DATA_FINISHED_READING
:
1944 case SSL_EARLY_DATA_READ_RETRY
:
1945 early_data_state
= s
->early_data_state
;
1946 /* We are a server writing to an unauthenticated client */
1947 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1948 ret
= SSL_write_ex(s
, buf
, num
, written
);
1949 s
->early_data_state
= early_data_state
;
1953 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1958 int SSL_shutdown(SSL
*s
)
1961 * Note that this function behaves differently from what one might
1962 * expect. Return values are 0 for no success (yet), 1 for success; but
1963 * calling it once is usually not enough, even if blocking I/O is used
1964 * (see ssl3_shutdown).
1967 if (s
->handshake_func
== NULL
) {
1968 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1972 if (!SSL_in_init(s
)) {
1973 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1974 struct ssl_async_args args
;
1977 args
.type
= OTHERFUNC
;
1978 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1980 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1982 return s
->method
->ssl_shutdown(s
);
1985 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1990 int SSL_key_update(SSL
*s
, int updatetype
)
1993 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1994 * negotiated, and that it is appropriate to call SSL_key_update() instead
1995 * of SSL_renegotiate().
1997 if (!SSL_IS_TLS13(s
)) {
1998 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2002 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2003 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2004 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2008 if (!SSL_is_init_finished(s
)) {
2009 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2013 ossl_statem_set_in_init(s
, 1);
2014 s
->key_update
= updatetype
;
2018 int SSL_get_key_update_type(SSL
*s
)
2020 return s
->key_update
;
2023 int SSL_renegotiate(SSL
*s
)
2025 if (SSL_IS_TLS13(s
)) {
2026 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2030 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2031 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2038 return (s
->method
->ssl_renegotiate(s
));
2041 int SSL_renegotiate_abbreviated(SSL
*s
)
2043 if (SSL_IS_TLS13(s
)) {
2044 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2048 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2049 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2056 return (s
->method
->ssl_renegotiate(s
));
2059 int SSL_renegotiate_pending(SSL
*s
)
2062 * becomes true when negotiation is requested; false again once a
2063 * handshake has finished
2065 return (s
->renegotiate
!= 0);
2068 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2073 case SSL_CTRL_GET_READ_AHEAD
:
2074 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2075 case SSL_CTRL_SET_READ_AHEAD
:
2076 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2077 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2080 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2081 s
->msg_callback_arg
= parg
;
2085 return (s
->mode
|= larg
);
2086 case SSL_CTRL_CLEAR_MODE
:
2087 return (s
->mode
&= ~larg
);
2088 case SSL_CTRL_GET_MAX_CERT_LIST
:
2089 return (long)(s
->max_cert_list
);
2090 case SSL_CTRL_SET_MAX_CERT_LIST
:
2093 l
= (long)s
->max_cert_list
;
2094 s
->max_cert_list
= (size_t)larg
;
2096 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2097 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2099 s
->max_send_fragment
= larg
;
2100 if (s
->max_send_fragment
< s
->split_send_fragment
)
2101 s
->split_send_fragment
= s
->max_send_fragment
;
2103 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2104 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2106 s
->split_send_fragment
= larg
;
2108 case SSL_CTRL_SET_MAX_PIPELINES
:
2109 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2111 s
->max_pipelines
= larg
;
2113 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2115 case SSL_CTRL_GET_RI_SUPPORT
:
2117 return s
->s3
->send_connection_binding
;
2120 case SSL_CTRL_CERT_FLAGS
:
2121 return (s
->cert
->cert_flags
|= larg
);
2122 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2123 return (s
->cert
->cert_flags
&= ~larg
);
2125 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2127 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2129 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2130 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2132 return TLS_CIPHER_LEN
;
2134 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2135 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2137 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2141 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2142 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2143 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2144 &s
->min_proto_version
);
2145 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2146 return s
->min_proto_version
;
2147 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2148 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2149 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2150 &s
->max_proto_version
);
2151 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2152 return s
->max_proto_version
;
2154 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2158 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2161 case SSL_CTRL_SET_MSG_CALLBACK
:
2162 s
->msg_callback
= (void (*)
2163 (int write_p
, int version
, int content_type
,
2164 const void *buf
, size_t len
, SSL
*ssl
,
2169 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2173 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2175 return ctx
->sessions
;
2178 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2181 /* For some cases with ctx == NULL perform syntax checks */
2184 #ifndef OPENSSL_NO_EC
2185 case SSL_CTRL_SET_GROUPS_LIST
:
2186 return tls1_set_groups_list(NULL
, NULL
, parg
);
2188 case SSL_CTRL_SET_SIGALGS_LIST
:
2189 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2190 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2197 case SSL_CTRL_GET_READ_AHEAD
:
2198 return (ctx
->read_ahead
);
2199 case SSL_CTRL_SET_READ_AHEAD
:
2200 l
= ctx
->read_ahead
;
2201 ctx
->read_ahead
= larg
;
2204 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2205 ctx
->msg_callback_arg
= parg
;
2208 case SSL_CTRL_GET_MAX_CERT_LIST
:
2209 return (long)(ctx
->max_cert_list
);
2210 case SSL_CTRL_SET_MAX_CERT_LIST
:
2213 l
= (long)ctx
->max_cert_list
;
2214 ctx
->max_cert_list
= (size_t)larg
;
2217 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2220 l
= (long)ctx
->session_cache_size
;
2221 ctx
->session_cache_size
= (size_t)larg
;
2223 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2224 return (long)(ctx
->session_cache_size
);
2225 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2226 l
= ctx
->session_cache_mode
;
2227 ctx
->session_cache_mode
= larg
;
2229 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2230 return (ctx
->session_cache_mode
);
2232 case SSL_CTRL_SESS_NUMBER
:
2233 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2234 case SSL_CTRL_SESS_CONNECT
:
2235 return (ctx
->stats
.sess_connect
);
2236 case SSL_CTRL_SESS_CONNECT_GOOD
:
2237 return (ctx
->stats
.sess_connect_good
);
2238 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2239 return (ctx
->stats
.sess_connect_renegotiate
);
2240 case SSL_CTRL_SESS_ACCEPT
:
2241 return (ctx
->stats
.sess_accept
);
2242 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2243 return (ctx
->stats
.sess_accept_good
);
2244 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2245 return (ctx
->stats
.sess_accept_renegotiate
);
2246 case SSL_CTRL_SESS_HIT
:
2247 return (ctx
->stats
.sess_hit
);
2248 case SSL_CTRL_SESS_CB_HIT
:
2249 return (ctx
->stats
.sess_cb_hit
);
2250 case SSL_CTRL_SESS_MISSES
:
2251 return (ctx
->stats
.sess_miss
);
2252 case SSL_CTRL_SESS_TIMEOUTS
:
2253 return (ctx
->stats
.sess_timeout
);
2254 case SSL_CTRL_SESS_CACHE_FULL
:
2255 return (ctx
->stats
.sess_cache_full
);
2257 return (ctx
->mode
|= larg
);
2258 case SSL_CTRL_CLEAR_MODE
:
2259 return (ctx
->mode
&= ~larg
);
2260 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2261 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2263 ctx
->max_send_fragment
= larg
;
2264 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2265 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2267 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2268 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2270 ctx
->split_send_fragment
= larg
;
2272 case SSL_CTRL_SET_MAX_PIPELINES
:
2273 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2275 ctx
->max_pipelines
= larg
;
2277 case SSL_CTRL_CERT_FLAGS
:
2278 return (ctx
->cert
->cert_flags
|= larg
);
2279 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2280 return (ctx
->cert
->cert_flags
&= ~larg
);
2281 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2282 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2283 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2284 &ctx
->min_proto_version
);
2285 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2286 return ctx
->min_proto_version
;
2287 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2288 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2289 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2290 &ctx
->max_proto_version
);
2291 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2292 return ctx
->max_proto_version
;
2294 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2298 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2301 case SSL_CTRL_SET_MSG_CALLBACK
:
2302 ctx
->msg_callback
= (void (*)
2303 (int write_p
, int version
, int content_type
,
2304 const void *buf
, size_t len
, SSL
*ssl
,
2309 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2313 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2322 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2323 const SSL_CIPHER
*const *bp
)
2325 if ((*ap
)->id
> (*bp
)->id
)
2327 if ((*ap
)->id
< (*bp
)->id
)
2332 /** return a STACK of the ciphers available for the SSL and in order of
2334 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2337 if (s
->cipher_list
!= NULL
) {
2338 return (s
->cipher_list
);
2339 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2340 return (s
->ctx
->cipher_list
);
2346 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2348 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2350 return s
->session
->ciphers
;
2353 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2355 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2357 ciphers
= SSL_get_ciphers(s
);
2360 ssl_set_client_disabled(s
);
2361 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2362 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2363 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2365 sk
= sk_SSL_CIPHER_new_null();
2368 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2369 sk_SSL_CIPHER_free(sk
);
2377 /** return a STACK of the ciphers available for the SSL and in order of
2379 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2382 if (s
->cipher_list_by_id
!= NULL
) {
2383 return (s
->cipher_list_by_id
);
2384 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2385 return (s
->ctx
->cipher_list_by_id
);
2391 /** The old interface to get the same thing as SSL_get_ciphers() */
2392 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2394 const SSL_CIPHER
*c
;
2395 STACK_OF(SSL_CIPHER
) *sk
;
2399 sk
= SSL_get_ciphers(s
);
2400 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2402 c
= sk_SSL_CIPHER_value(sk
, n
);
2408 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2410 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2413 return ctx
->cipher_list
;
2417 /** specify the ciphers to be used by default by the SSL_CTX */
2418 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2420 STACK_OF(SSL_CIPHER
) *sk
;
2422 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2423 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2425 * ssl_create_cipher_list may return an empty stack if it was unable to
2426 * find a cipher matching the given rule string (for example if the rule
2427 * string specifies a cipher which has been disabled). This is not an
2428 * error as far as ssl_create_cipher_list is concerned, and hence
2429 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2433 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2434 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2440 /** specify the ciphers to be used by the SSL */
2441 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2443 STACK_OF(SSL_CIPHER
) *sk
;
2445 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2446 &s
->cipher_list_by_id
, str
, s
->cert
);
2447 /* see comment in SSL_CTX_set_cipher_list */
2450 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2451 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2457 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2460 STACK_OF(SSL_CIPHER
) *sk
;
2461 const SSL_CIPHER
*c
;
2464 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2468 sk
= s
->session
->ciphers
;
2470 if (sk_SSL_CIPHER_num(sk
) == 0)
2473 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2476 c
= sk_SSL_CIPHER_value(sk
, i
);
2477 n
= strlen(c
->name
);
2493 /** return a servername extension value if provided in Client Hello, or NULL.
2494 * So far, only host_name types are defined (RFC 3546).
2497 const char *SSL_get_servername(const SSL
*s
, const int type
)
2499 if (type
!= TLSEXT_NAMETYPE_host_name
)
2502 return s
->session
&& !s
->ext
.hostname
?
2503 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2506 int SSL_get_servername_type(const SSL
*s
)
2509 && (!s
->ext
.hostname
? s
->session
->
2510 ext
.hostname
: s
->ext
.hostname
))
2511 return TLSEXT_NAMETYPE_host_name
;
2516 * SSL_select_next_proto implements the standard protocol selection. It is
2517 * expected that this function is called from the callback set by
2518 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2519 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2520 * not included in the length. A byte string of length 0 is invalid. No byte
2521 * string may be truncated. The current, but experimental algorithm for
2522 * selecting the protocol is: 1) If the server doesn't support NPN then this
2523 * is indicated to the callback. In this case, the client application has to
2524 * abort the connection or have a default application level protocol. 2) If
2525 * the server supports NPN, but advertises an empty list then the client
2526 * selects the first protocol in its list, but indicates via the API that this
2527 * fallback case was enacted. 3) Otherwise, the client finds the first
2528 * protocol in the server's list that it supports and selects this protocol.
2529 * This is because it's assumed that the server has better information about
2530 * which protocol a client should use. 4) If the client doesn't support any
2531 * of the server's advertised protocols, then this is treated the same as
2532 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2533 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2535 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2536 const unsigned char *server
,
2537 unsigned int server_len
,
2538 const unsigned char *client
, unsigned int client_len
)
2541 const unsigned char *result
;
2542 int status
= OPENSSL_NPN_UNSUPPORTED
;
2545 * For each protocol in server preference order, see if we support it.
2547 for (i
= 0; i
< server_len
;) {
2548 for (j
= 0; j
< client_len
;) {
2549 if (server
[i
] == client
[j
] &&
2550 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2551 /* We found a match */
2552 result
= &server
[i
];
2553 status
= OPENSSL_NPN_NEGOTIATED
;
2563 /* There's no overlap between our protocols and the server's list. */
2565 status
= OPENSSL_NPN_NO_OVERLAP
;
2568 *out
= (unsigned char *)result
+ 1;
2569 *outlen
= result
[0];
2573 #ifndef OPENSSL_NO_NEXTPROTONEG
2575 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2576 * client's requested protocol for this connection and returns 0. If the
2577 * client didn't request any protocol, then *data is set to NULL. Note that
2578 * the client can request any protocol it chooses. The value returned from
2579 * this function need not be a member of the list of supported protocols
2580 * provided by the callback.
2582 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2589 *len
= (unsigned int)s
->ext
.npn_len
;
2594 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2595 * a TLS server needs a list of supported protocols for Next Protocol
2596 * Negotiation. The returned list must be in wire format. The list is
2597 * returned by setting |out| to point to it and |outlen| to its length. This
2598 * memory will not be modified, but one should assume that the SSL* keeps a
2599 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2600 * wishes to advertise. Otherwise, no such extension will be included in the
2603 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2604 SSL_CTX_npn_advertised_cb_func cb
,
2607 ctx
->ext
.npn_advertised_cb
= cb
;
2608 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2612 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2613 * client needs to select a protocol from the server's provided list. |out|
2614 * must be set to point to the selected protocol (which may be within |in|).
2615 * The length of the protocol name must be written into |outlen|. The
2616 * server's advertised protocols are provided in |in| and |inlen|. The
2617 * callback can assume that |in| is syntactically valid. The client must
2618 * select a protocol. It is fatal to the connection if this callback returns
2619 * a value other than SSL_TLSEXT_ERR_OK.
2621 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2622 SSL_CTX_npn_select_cb_func cb
,
2625 ctx
->ext
.npn_select_cb
= cb
;
2626 ctx
->ext
.npn_select_cb_arg
= arg
;
2631 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2632 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2633 * length-prefixed strings). Returns 0 on success.
2635 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2636 unsigned int protos_len
)
2638 OPENSSL_free(ctx
->ext
.alpn
);
2639 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2640 if (ctx
->ext
.alpn
== NULL
) {
2641 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2644 ctx
->ext
.alpn_len
= protos_len
;
2650 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2651 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2652 * length-prefixed strings). Returns 0 on success.
2654 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2655 unsigned int protos_len
)
2657 OPENSSL_free(ssl
->ext
.alpn
);
2658 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2659 if (ssl
->ext
.alpn
== NULL
) {
2660 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2663 ssl
->ext
.alpn_len
= protos_len
;
2669 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2670 * called during ClientHello processing in order to select an ALPN protocol
2671 * from the client's list of offered protocols.
2673 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2674 SSL_CTX_alpn_select_cb_func cb
,
2677 ctx
->ext
.alpn_select_cb
= cb
;
2678 ctx
->ext
.alpn_select_cb_arg
= arg
;
2682 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2683 * On return it sets |*data| to point to |*len| bytes of protocol name
2684 * (not including the leading length-prefix byte). If the server didn't
2685 * respond with a negotiated protocol then |*len| will be zero.
2687 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2692 *data
= ssl
->s3
->alpn_selected
;
2696 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2699 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2700 const char *label
, size_t llen
,
2701 const unsigned char *context
, size_t contextlen
,
2704 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2707 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2709 contextlen
, use_context
);
2712 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2714 const unsigned char *session_id
= a
->session_id
;
2716 unsigned char tmp_storage
[4];
2718 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2719 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2720 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2721 session_id
= tmp_storage
;
2725 ((unsigned long)session_id
[0]) |
2726 ((unsigned long)session_id
[1] << 8L) |
2727 ((unsigned long)session_id
[2] << 16L) |
2728 ((unsigned long)session_id
[3] << 24L);
2733 * NB: If this function (or indeed the hash function which uses a sort of
2734 * coarser function than this one) is changed, ensure
2735 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2736 * being able to construct an SSL_SESSION that will collide with any existing
2737 * session with a matching session ID.
2739 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2741 if (a
->ssl_version
!= b
->ssl_version
)
2743 if (a
->session_id_length
!= b
->session_id_length
)
2745 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2749 * These wrapper functions should remain rather than redeclaring
2750 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2751 * variable. The reason is that the functions aren't static, they're exposed
2755 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2757 SSL_CTX
*ret
= NULL
;
2760 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2764 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2767 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2768 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2771 ret
= OPENSSL_zalloc(sizeof(*ret
));
2776 ret
->min_proto_version
= 0;
2777 ret
->max_proto_version
= 0;
2778 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2779 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2780 /* We take the system default. */
2781 ret
->session_timeout
= meth
->get_timeout();
2782 ret
->references
= 1;
2783 ret
->lock
= CRYPTO_THREAD_lock_new();
2784 if (ret
->lock
== NULL
) {
2785 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2789 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2790 ret
->verify_mode
= SSL_VERIFY_NONE
;
2791 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2794 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2795 if (ret
->sessions
== NULL
)
2797 ret
->cert_store
= X509_STORE_new();
2798 if (ret
->cert_store
== NULL
)
2800 #ifndef OPENSSL_NO_CT
2801 ret
->ctlog_store
= CTLOG_STORE_new();
2802 if (ret
->ctlog_store
== NULL
)
2805 if (!ssl_create_cipher_list(ret
->method
,
2806 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2807 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2808 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2809 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2813 ret
->param
= X509_VERIFY_PARAM_new();
2814 if (ret
->param
== NULL
)
2817 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2818 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2821 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2822 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2826 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2829 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2832 /* No compression for DTLS */
2833 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2834 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2836 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2837 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2839 /* Setup RFC5077 ticket keys */
2840 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2841 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2842 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2843 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2844 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2845 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2846 ret
->options
|= SSL_OP_NO_TICKET
;
2848 #ifndef OPENSSL_NO_SRP
2849 if (!SSL_CTX_SRP_CTX_init(ret
))
2852 #ifndef OPENSSL_NO_ENGINE
2853 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2854 # define eng_strx(x) #x
2855 # define eng_str(x) eng_strx(x)
2856 /* Use specific client engine automatically... ignore errors */
2859 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2862 ENGINE_load_builtin_engines();
2863 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2865 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2871 * Default is to connect to non-RI servers. When RI is more widely
2872 * deployed might change this.
2874 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2876 * Disable compression by default to prevent CRIME. Applications can
2877 * re-enable compression by configuring
2878 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2879 * or by using the SSL_CONF library.
2881 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2883 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2886 * Default max early data is a fully loaded single record. Could be split
2887 * across multiple records in practice
2889 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2893 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2899 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2903 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2906 REF_PRINT_COUNT("SSL_CTX", ctx
);
2907 REF_ASSERT_ISNT(i
< 2);
2908 return ((i
> 1) ? 1 : 0);
2911 void SSL_CTX_free(SSL_CTX
*a
)
2918 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2919 REF_PRINT_COUNT("SSL_CTX", a
);
2922 REF_ASSERT_ISNT(i
< 0);
2924 X509_VERIFY_PARAM_free(a
->param
);
2925 dane_ctx_final(&a
->dane
);
2928 * Free internal session cache. However: the remove_cb() may reference
2929 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2930 * after the sessions were flushed.
2931 * As the ex_data handling routines might also touch the session cache,
2932 * the most secure solution seems to be: empty (flush) the cache, then
2933 * free ex_data, then finally free the cache.
2934 * (See ticket [openssl.org #212].)
2936 if (a
->sessions
!= NULL
)
2937 SSL_CTX_flush_sessions(a
, 0);
2939 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2940 lh_SSL_SESSION_free(a
->sessions
);
2941 X509_STORE_free(a
->cert_store
);
2942 #ifndef OPENSSL_NO_CT
2943 CTLOG_STORE_free(a
->ctlog_store
);
2945 sk_SSL_CIPHER_free(a
->cipher_list
);
2946 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2947 ssl_cert_free(a
->cert
);
2948 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2949 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2950 a
->comp_methods
= NULL
;
2951 #ifndef OPENSSL_NO_SRTP
2952 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2954 #ifndef OPENSSL_NO_SRP
2955 SSL_CTX_SRP_CTX_free(a
);
2957 #ifndef OPENSSL_NO_ENGINE
2958 ENGINE_finish(a
->client_cert_engine
);
2961 #ifndef OPENSSL_NO_EC
2962 OPENSSL_free(a
->ext
.ecpointformats
);
2963 OPENSSL_free(a
->ext
.supportedgroups
);
2965 OPENSSL_free(a
->ext
.alpn
);
2967 CRYPTO_THREAD_lock_free(a
->lock
);
2972 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2974 ctx
->default_passwd_callback
= cb
;
2977 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2979 ctx
->default_passwd_callback_userdata
= u
;
2982 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2984 return ctx
->default_passwd_callback
;
2987 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2989 return ctx
->default_passwd_callback_userdata
;
2992 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2994 s
->default_passwd_callback
= cb
;
2997 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2999 s
->default_passwd_callback_userdata
= u
;
3002 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3004 return s
->default_passwd_callback
;
3007 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3009 return s
->default_passwd_callback_userdata
;
3012 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3013 int (*cb
) (X509_STORE_CTX
*, void *),
3016 ctx
->app_verify_callback
= cb
;
3017 ctx
->app_verify_arg
= arg
;
3020 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3021 int (*cb
) (int, X509_STORE_CTX
*))
3023 ctx
->verify_mode
= mode
;
3024 ctx
->default_verify_callback
= cb
;
3027 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3029 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3032 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3034 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3037 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3039 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3042 void ssl_set_masks(SSL
*s
)
3045 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3046 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3047 unsigned long mask_k
, mask_a
;
3048 #ifndef OPENSSL_NO_EC
3049 int have_ecc_cert
, ecdsa_ok
;
3054 #ifndef OPENSSL_NO_DH
3055 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3060 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3061 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3062 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3063 #ifndef OPENSSL_NO_EC
3064 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3070 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3071 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3074 #ifndef OPENSSL_NO_GOST
3075 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3076 mask_k
|= SSL_kGOST
;
3077 mask_a
|= SSL_aGOST12
;
3079 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3080 mask_k
|= SSL_kGOST
;
3081 mask_a
|= SSL_aGOST12
;
3083 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3084 mask_k
|= SSL_kGOST
;
3085 mask_a
|= SSL_aGOST01
;
3096 * If we only have an RSA-PSS certificate allow RSA authentication
3097 * if TLS 1.2 and peer supports it.
3100 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3101 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3102 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3109 mask_a
|= SSL_aNULL
;
3112 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3113 * depending on the key usage extension.
3115 #ifndef OPENSSL_NO_EC
3116 if (have_ecc_cert
) {
3118 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3119 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3120 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3123 mask_a
|= SSL_aECDSA
;
3125 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3126 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3127 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3128 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3129 mask_a
|= SSL_aECDSA
;
3132 #ifndef OPENSSL_NO_EC
3133 mask_k
|= SSL_kECDHE
;
3136 #ifndef OPENSSL_NO_PSK
3139 if (mask_k
& SSL_kRSA
)
3140 mask_k
|= SSL_kRSAPSK
;
3141 if (mask_k
& SSL_kDHE
)
3142 mask_k
|= SSL_kDHEPSK
;
3143 if (mask_k
& SSL_kECDHE
)
3144 mask_k
|= SSL_kECDHEPSK
;
3147 s
->s3
->tmp
.mask_k
= mask_k
;
3148 s
->s3
->tmp
.mask_a
= mask_a
;
3151 #ifndef OPENSSL_NO_EC
3153 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3155 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3156 /* key usage, if present, must allow signing */
3157 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3158 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3159 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3163 return 1; /* all checks are ok */
3168 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3169 size_t *serverinfo_length
)
3171 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3172 *serverinfo_length
= 0;
3174 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3177 *serverinfo
= cpk
->serverinfo
;
3178 *serverinfo_length
= cpk
->serverinfo_length
;
3182 void ssl_update_cache(SSL
*s
, int mode
)
3187 * If the session_id_length is 0, we are not supposed to cache it, and it
3188 * would be rather hard to do anyway :-)
3190 if (s
->session
->session_id_length
== 0)
3193 i
= s
->session_ctx
->session_cache_mode
;
3195 && (!s
->hit
|| SSL_IS_TLS13(s
))
3196 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3197 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3198 && s
->session_ctx
->new_session_cb
!= NULL
) {
3199 SSL_SESSION_up_ref(s
->session
);
3200 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3201 SSL_SESSION_free(s
->session
);
3204 /* auto flush every 255 connections */
3205 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3206 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3207 ? s
->session_ctx
->stats
.sess_connect_good
3208 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3209 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3214 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3219 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3224 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3228 if (s
->method
!= meth
) {
3229 const SSL_METHOD
*sm
= s
->method
;
3230 int (*hf
) (SSL
*) = s
->handshake_func
;
3232 if (sm
->version
== meth
->version
)
3237 ret
= s
->method
->ssl_new(s
);
3240 if (hf
== sm
->ssl_connect
)
3241 s
->handshake_func
= meth
->ssl_connect
;
3242 else if (hf
== sm
->ssl_accept
)
3243 s
->handshake_func
= meth
->ssl_accept
;
3248 int SSL_get_error(const SSL
*s
, int i
)
3255 return (SSL_ERROR_NONE
);
3258 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3259 * where we do encode the error
3261 if ((l
= ERR_peek_error()) != 0) {
3262 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3263 return (SSL_ERROR_SYSCALL
);
3265 return (SSL_ERROR_SSL
);
3268 if (SSL_want_read(s
)) {
3269 bio
= SSL_get_rbio(s
);
3270 if (BIO_should_read(bio
))
3271 return (SSL_ERROR_WANT_READ
);
3272 else if (BIO_should_write(bio
))
3274 * This one doesn't make too much sense ... We never try to write
3275 * to the rbio, and an application program where rbio and wbio
3276 * are separate couldn't even know what it should wait for.
3277 * However if we ever set s->rwstate incorrectly (so that we have
3278 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3279 * wbio *are* the same, this test works around that bug; so it
3280 * might be safer to keep it.
3282 return (SSL_ERROR_WANT_WRITE
);
3283 else if (BIO_should_io_special(bio
)) {
3284 reason
= BIO_get_retry_reason(bio
);
3285 if (reason
== BIO_RR_CONNECT
)
3286 return (SSL_ERROR_WANT_CONNECT
);
3287 else if (reason
== BIO_RR_ACCEPT
)
3288 return (SSL_ERROR_WANT_ACCEPT
);
3290 return (SSL_ERROR_SYSCALL
); /* unknown */
3294 if (SSL_want_write(s
)) {
3295 /* Access wbio directly - in order to use the buffered bio if present */
3297 if (BIO_should_write(bio
))
3298 return (SSL_ERROR_WANT_WRITE
);
3299 else if (BIO_should_read(bio
))
3301 * See above (SSL_want_read(s) with BIO_should_write(bio))
3303 return (SSL_ERROR_WANT_READ
);
3304 else if (BIO_should_io_special(bio
)) {
3305 reason
= BIO_get_retry_reason(bio
);
3306 if (reason
== BIO_RR_CONNECT
)
3307 return (SSL_ERROR_WANT_CONNECT
);
3308 else if (reason
== BIO_RR_ACCEPT
)
3309 return (SSL_ERROR_WANT_ACCEPT
);
3311 return (SSL_ERROR_SYSCALL
);
3314 if (SSL_want_x509_lookup(s
))
3315 return (SSL_ERROR_WANT_X509_LOOKUP
);
3316 if (SSL_want_async(s
))
3317 return SSL_ERROR_WANT_ASYNC
;
3318 if (SSL_want_async_job(s
))
3319 return SSL_ERROR_WANT_ASYNC_JOB
;
3320 if (SSL_want_client_hello_cb(s
))
3321 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3323 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3324 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3325 return (SSL_ERROR_ZERO_RETURN
);
3327 return (SSL_ERROR_SYSCALL
);
3330 static int ssl_do_handshake_intern(void *vargs
)
3332 struct ssl_async_args
*args
;
3335 args
= (struct ssl_async_args
*)vargs
;
3338 return s
->handshake_func(s
);
3341 int SSL_do_handshake(SSL
*s
)
3345 if (s
->handshake_func
== NULL
) {
3346 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3350 ossl_statem_check_finish_init(s
, -1);
3352 s
->method
->ssl_renegotiate_check(s
, 0);
3354 if (SSL_is_server(s
)) {
3355 /* clear SNI settings at server-side */
3356 OPENSSL_free(s
->ext
.hostname
);
3357 s
->ext
.hostname
= NULL
;
3360 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3361 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3362 struct ssl_async_args args
;
3366 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3368 ret
= s
->handshake_func(s
);
3374 void SSL_set_accept_state(SSL
*s
)
3378 ossl_statem_clear(s
);
3379 s
->handshake_func
= s
->method
->ssl_accept
;
3383 void SSL_set_connect_state(SSL
*s
)
3387 ossl_statem_clear(s
);
3388 s
->handshake_func
= s
->method
->ssl_connect
;
3392 int ssl_undefined_function(SSL
*s
)
3394 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3398 int ssl_undefined_void_function(void)
3400 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3401 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3405 int ssl_undefined_const_function(const SSL
*s
)
3410 const SSL_METHOD
*ssl_bad_method(int ver
)
3412 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3416 const char *ssl_protocol_to_string(int version
)
3420 case TLS1_3_VERSION
:
3423 case TLS1_2_VERSION
:
3426 case TLS1_1_VERSION
:
3441 case DTLS1_2_VERSION
:
3449 const char *SSL_get_version(const SSL
*s
)
3451 return ssl_protocol_to_string(s
->version
);
3454 SSL
*SSL_dup(SSL
*s
)
3456 STACK_OF(X509_NAME
) *sk
;
3461 /* If we're not quiescent, just up_ref! */
3462 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3463 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3468 * Otherwise, copy configuration state, and session if set.
3470 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3473 if (s
->session
!= NULL
) {
3475 * Arranges to share the same session via up_ref. This "copies"
3476 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3478 if (!SSL_copy_session_id(ret
, s
))
3482 * No session has been established yet, so we have to expect that
3483 * s->cert or ret->cert will be changed later -- they should not both
3484 * point to the same object, and thus we can't use
3485 * SSL_copy_session_id.
3487 if (!SSL_set_ssl_method(ret
, s
->method
))
3490 if (s
->cert
!= NULL
) {
3491 ssl_cert_free(ret
->cert
);
3492 ret
->cert
= ssl_cert_dup(s
->cert
);
3493 if (ret
->cert
== NULL
)
3497 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3498 (int)s
->sid_ctx_length
))
3502 if (!ssl_dane_dup(ret
, s
))
3504 ret
->version
= s
->version
;
3505 ret
->options
= s
->options
;
3506 ret
->mode
= s
->mode
;
3507 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3508 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3509 ret
->msg_callback
= s
->msg_callback
;
3510 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3511 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3512 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3513 ret
->generate_session_id
= s
->generate_session_id
;
3515 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3517 /* copy app data, a little dangerous perhaps */
3518 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3521 /* setup rbio, and wbio */
3522 if (s
->rbio
!= NULL
) {
3523 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3526 if (s
->wbio
!= NULL
) {
3527 if (s
->wbio
!= s
->rbio
) {
3528 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3531 BIO_up_ref(ret
->rbio
);
3532 ret
->wbio
= ret
->rbio
;
3536 ret
->server
= s
->server
;
3537 if (s
->handshake_func
) {
3539 SSL_set_accept_state(ret
);
3541 SSL_set_connect_state(ret
);
3543 ret
->shutdown
= s
->shutdown
;
3546 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3547 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3549 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3551 /* dup the cipher_list and cipher_list_by_id stacks */
3552 if (s
->cipher_list
!= NULL
) {
3553 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3556 if (s
->cipher_list_by_id
!= NULL
)
3557 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3561 /* Dup the client_CA list */
3562 if (s
->ca_names
!= NULL
) {
3563 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3566 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3567 xn
= sk_X509_NAME_value(sk
, i
);
3568 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3581 void ssl_clear_cipher_ctx(SSL
*s
)
3583 if (s
->enc_read_ctx
!= NULL
) {
3584 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3585 s
->enc_read_ctx
= NULL
;
3587 if (s
->enc_write_ctx
!= NULL
) {
3588 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3589 s
->enc_write_ctx
= NULL
;
3591 #ifndef OPENSSL_NO_COMP
3592 COMP_CTX_free(s
->expand
);
3594 COMP_CTX_free(s
->compress
);
3599 X509
*SSL_get_certificate(const SSL
*s
)
3601 if (s
->cert
!= NULL
)
3602 return (s
->cert
->key
->x509
);
3607 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3609 if (s
->cert
!= NULL
)
3610 return (s
->cert
->key
->privatekey
);
3615 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3617 if (ctx
->cert
!= NULL
)
3618 return ctx
->cert
->key
->x509
;
3623 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3625 if (ctx
->cert
!= NULL
)
3626 return ctx
->cert
->key
->privatekey
;
3631 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3633 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3634 return (s
->session
->cipher
);
3638 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3640 return s
->s3
->tmp
.new_cipher
;
3643 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3645 #ifndef OPENSSL_NO_COMP
3646 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3652 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3654 #ifndef OPENSSL_NO_COMP
3655 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3661 int ssl_init_wbio_buffer(SSL
*s
)
3665 if (s
->bbio
!= NULL
) {
3666 /* Already buffered. */
3670 bbio
= BIO_new(BIO_f_buffer());
3671 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3673 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3677 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3682 int ssl_free_wbio_buffer(SSL
*s
)
3684 /* callers ensure s is never null */
3685 if (s
->bbio
== NULL
)
3688 s
->wbio
= BIO_pop(s
->wbio
);
3689 if (!ossl_assert(s
->wbio
!= NULL
))
3697 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3699 ctx
->quiet_shutdown
= mode
;
3702 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3704 return (ctx
->quiet_shutdown
);
3707 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3709 s
->quiet_shutdown
= mode
;
3712 int SSL_get_quiet_shutdown(const SSL
*s
)
3714 return (s
->quiet_shutdown
);
3717 void SSL_set_shutdown(SSL
*s
, int mode
)
3722 int SSL_get_shutdown(const SSL
*s
)
3727 int SSL_version(const SSL
*s
)
3732 int SSL_client_version(const SSL
*s
)
3734 return s
->client_version
;
3737 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3742 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3745 if (ssl
->ctx
== ctx
)
3748 ctx
= ssl
->session_ctx
;
3749 new_cert
= ssl_cert_dup(ctx
->cert
);
3750 if (new_cert
== NULL
) {
3754 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3755 ssl_cert_free(new_cert
);
3759 ssl_cert_free(ssl
->cert
);
3760 ssl
->cert
= new_cert
;
3763 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3764 * so setter APIs must prevent invalid lengths from entering the system.
3766 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3770 * If the session ID context matches that of the parent SSL_CTX,
3771 * inherit it from the new SSL_CTX as well. If however the context does
3772 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3773 * leave it unchanged.
3775 if ((ssl
->ctx
!= NULL
) &&
3776 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3777 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3778 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3779 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3782 SSL_CTX_up_ref(ctx
);
3783 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3789 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3791 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3794 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3796 X509_LOOKUP
*lookup
;
3798 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3801 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3803 /* Clear any errors if the default directory does not exist */
3809 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3811 X509_LOOKUP
*lookup
;
3813 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3817 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3819 /* Clear any errors if the default file does not exist */
3825 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3828 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3831 void SSL_set_info_callback(SSL
*ssl
,
3832 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3834 ssl
->info_callback
= cb
;
3838 * One compiler (Diab DCC) doesn't like argument names in returned function
3841 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3844 return ssl
->info_callback
;
3847 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3849 ssl
->verify_result
= arg
;
3852 long SSL_get_verify_result(const SSL
*ssl
)
3854 return (ssl
->verify_result
);
3857 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3860 return sizeof(ssl
->s3
->client_random
);
3861 if (outlen
> sizeof(ssl
->s3
->client_random
))
3862 outlen
= sizeof(ssl
->s3
->client_random
);
3863 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3867 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3870 return sizeof(ssl
->s3
->server_random
);
3871 if (outlen
> sizeof(ssl
->s3
->server_random
))
3872 outlen
= sizeof(ssl
->s3
->server_random
);
3873 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3877 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3878 unsigned char *out
, size_t outlen
)
3881 return session
->master_key_length
;
3882 if (outlen
> session
->master_key_length
)
3883 outlen
= session
->master_key_length
;
3884 memcpy(out
, session
->master_key
, outlen
);
3888 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3891 if (len
> sizeof(sess
->master_key
))
3894 memcpy(sess
->master_key
, in
, len
);
3895 sess
->master_key_length
= len
;
3900 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3902 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3905 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3907 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3910 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3912 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3915 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3917 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3920 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3922 return (ctx
->cert_store
);
3925 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3927 X509_STORE_free(ctx
->cert_store
);
3928 ctx
->cert_store
= store
;
3931 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3934 X509_STORE_up_ref(store
);
3935 SSL_CTX_set_cert_store(ctx
, store
);
3938 int SSL_want(const SSL
*s
)
3940 return (s
->rwstate
);
3944 * \brief Set the callback for generating temporary DH keys.
3945 * \param ctx the SSL context.
3946 * \param dh the callback
3949 #ifndef OPENSSL_NO_DH
3950 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3951 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3954 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3957 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3960 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3964 #ifndef OPENSSL_NO_PSK
3965 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3967 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3968 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3971 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3972 if (identity_hint
!= NULL
) {
3973 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3974 if (ctx
->cert
->psk_identity_hint
== NULL
)
3977 ctx
->cert
->psk_identity_hint
= NULL
;
3981 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3986 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3987 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3990 OPENSSL_free(s
->cert
->psk_identity_hint
);
3991 if (identity_hint
!= NULL
) {
3992 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3993 if (s
->cert
->psk_identity_hint
== NULL
)
3996 s
->cert
->psk_identity_hint
= NULL
;
4000 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4002 if (s
== NULL
|| s
->session
== NULL
)
4004 return (s
->session
->psk_identity_hint
);
4007 const char *SSL_get_psk_identity(const SSL
*s
)
4009 if (s
== NULL
|| s
->session
== NULL
)
4011 return (s
->session
->psk_identity
);
4014 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4016 s
->psk_client_callback
= cb
;
4019 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4021 ctx
->psk_client_callback
= cb
;
4024 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4026 s
->psk_server_callback
= cb
;
4029 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4031 ctx
->psk_server_callback
= cb
;
4035 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4037 s
->psk_find_session_cb
= cb
;
4040 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4041 SSL_psk_find_session_cb_func cb
)
4043 ctx
->psk_find_session_cb
= cb
;
4046 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4048 s
->psk_use_session_cb
= cb
;
4051 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4052 SSL_psk_use_session_cb_func cb
)
4054 ctx
->psk_use_session_cb
= cb
;
4057 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4058 void (*cb
) (int write_p
, int version
,
4059 int content_type
, const void *buf
,
4060 size_t len
, SSL
*ssl
, void *arg
))
4062 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4065 void SSL_set_msg_callback(SSL
*ssl
,
4066 void (*cb
) (int write_p
, int version
,
4067 int content_type
, const void *buf
,
4068 size_t len
, SSL
*ssl
, void *arg
))
4070 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4073 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4074 int (*cb
) (SSL
*ssl
,
4078 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4079 (void (*)(void))cb
);
4082 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4083 int (*cb
) (SSL
*ssl
,
4084 int is_forward_secure
))
4086 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4087 (void (*)(void))cb
);
4090 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4091 size_t (*cb
) (SSL
*ssl
, int type
,
4092 size_t len
, void *arg
))
4094 ctx
->record_padding_cb
= cb
;
4097 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4099 ctx
->record_padding_arg
= arg
;
4102 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4104 return ctx
->record_padding_arg
;
4107 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4109 /* block size of 0 or 1 is basically no padding */
4110 if (block_size
== 1)
4111 ctx
->block_padding
= 0;
4112 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4113 ctx
->block_padding
= block_size
;
4119 void SSL_set_record_padding_callback(SSL
*ssl
,
4120 size_t (*cb
) (SSL
*ssl
, int type
,
4121 size_t len
, void *arg
))
4123 ssl
->record_padding_cb
= cb
;
4126 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4128 ssl
->record_padding_arg
= arg
;
4131 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4133 return ssl
->record_padding_arg
;
4136 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4138 /* block size of 0 or 1 is basically no padding */
4139 if (block_size
== 1)
4140 ssl
->block_padding
= 0;
4141 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4142 ssl
->block_padding
= block_size
;
4149 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4150 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4151 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4152 * Returns the newly allocated ctx;
4155 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4157 ssl_clear_hash_ctx(hash
);
4158 *hash
= EVP_MD_CTX_new();
4159 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4160 EVP_MD_CTX_free(*hash
);
4167 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4170 EVP_MD_CTX_free(*hash
);
4174 /* Retrieve handshake hashes */
4175 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4178 EVP_MD_CTX
*ctx
= NULL
;
4179 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4180 int hashleni
= EVP_MD_CTX_size(hdgst
);
4183 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4186 ctx
= EVP_MD_CTX_new();
4190 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4191 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4194 *hashlen
= hashleni
;
4198 EVP_MD_CTX_free(ctx
);
4202 int SSL_session_reused(SSL
*s
)
4207 int SSL_is_server(const SSL
*s
)
4212 #if OPENSSL_API_COMPAT < 0x10100000L
4213 void SSL_set_debug(SSL
*s
, int debug
)
4215 /* Old function was do-nothing anyway... */
4221 void SSL_set_security_level(SSL
*s
, int level
)
4223 s
->cert
->sec_level
= level
;
4226 int SSL_get_security_level(const SSL
*s
)
4228 return s
->cert
->sec_level
;
4231 void SSL_set_security_callback(SSL
*s
,
4232 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4233 int op
, int bits
, int nid
,
4234 void *other
, void *ex
))
4236 s
->cert
->sec_cb
= cb
;
4239 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4240 const SSL_CTX
*ctx
, int op
,
4241 int bits
, int nid
, void *other
,
4243 return s
->cert
->sec_cb
;
4246 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4248 s
->cert
->sec_ex
= ex
;
4251 void *SSL_get0_security_ex_data(const SSL
*s
)
4253 return s
->cert
->sec_ex
;
4256 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4258 ctx
->cert
->sec_level
= level
;
4261 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4263 return ctx
->cert
->sec_level
;
4266 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4267 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4268 int op
, int bits
, int nid
,
4269 void *other
, void *ex
))
4271 ctx
->cert
->sec_cb
= cb
;
4274 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4280 return ctx
->cert
->sec_cb
;
4283 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4285 ctx
->cert
->sec_ex
= ex
;
4288 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4290 return ctx
->cert
->sec_ex
;
4294 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4295 * can return unsigned long, instead of the generic long return value from the
4296 * control interface.
4298 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4300 return ctx
->options
;
4303 unsigned long SSL_get_options(const SSL
*s
)
4308 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4310 return ctx
->options
|= op
;
4313 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4315 return s
->options
|= op
;
4318 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4320 return ctx
->options
&= ~op
;
4323 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4325 return s
->options
&= ~op
;
4328 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4330 return s
->verified_chain
;
4333 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4335 #ifndef OPENSSL_NO_CT
4338 * Moves SCTs from the |src| stack to the |dst| stack.
4339 * The source of each SCT will be set to |origin|.
4340 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4342 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4344 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4345 sct_source_t origin
)
4351 *dst
= sk_SCT_new_null();
4353 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4358 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4359 if (SCT_set_source(sct
, origin
) != 1)
4362 if (sk_SCT_push(*dst
, sct
) <= 0)
4370 sk_SCT_push(src
, sct
); /* Put the SCT back */
4375 * Look for data collected during ServerHello and parse if found.
4376 * Returns the number of SCTs extracted.
4378 static int ct_extract_tls_extension_scts(SSL
*s
)
4380 int scts_extracted
= 0;
4382 if (s
->ext
.scts
!= NULL
) {
4383 const unsigned char *p
= s
->ext
.scts
;
4384 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4386 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4388 SCT_LIST_free(scts
);
4391 return scts_extracted
;
4395 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4396 * contains an SCT X509 extension. They will be stored in |s->scts|.
4398 * - The number of SCTs extracted, assuming an OCSP response exists.
4399 * - 0 if no OCSP response exists or it contains no SCTs.
4400 * - A negative integer if an error occurs.
4402 static int ct_extract_ocsp_response_scts(SSL
*s
)
4404 # ifndef OPENSSL_NO_OCSP
4405 int scts_extracted
= 0;
4406 const unsigned char *p
;
4407 OCSP_BASICRESP
*br
= NULL
;
4408 OCSP_RESPONSE
*rsp
= NULL
;
4409 STACK_OF(SCT
) *scts
= NULL
;
4412 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4415 p
= s
->ext
.ocsp
.resp
;
4416 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4420 br
= OCSP_response_get1_basic(rsp
);
4424 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4425 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4431 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4433 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4434 if (scts_extracted
< 0)
4438 SCT_LIST_free(scts
);
4439 OCSP_BASICRESP_free(br
);
4440 OCSP_RESPONSE_free(rsp
);
4441 return scts_extracted
;
4443 /* Behave as if no OCSP response exists */
4449 * Attempts to extract SCTs from the peer certificate.
4450 * Return the number of SCTs extracted, or a negative integer if an error
4453 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4455 int scts_extracted
= 0;
4456 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4459 STACK_OF(SCT
) *scts
=
4460 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4463 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4465 SCT_LIST_free(scts
);
4468 return scts_extracted
;
4472 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4473 * response (if it exists) and X509v3 extensions in the certificate.
4474 * Returns NULL if an error occurs.
4476 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4478 if (!s
->scts_parsed
) {
4479 if (ct_extract_tls_extension_scts(s
) < 0 ||
4480 ct_extract_ocsp_response_scts(s
) < 0 ||
4481 ct_extract_x509v3_extension_scts(s
) < 0)
4491 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4492 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4497 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4498 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4500 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4503 for (i
= 0; i
< count
; ++i
) {
4504 SCT
*sct
= sk_SCT_value(scts
, i
);
4505 int status
= SCT_get_validation_status(sct
);
4507 if (status
== SCT_VALIDATION_STATUS_VALID
)
4510 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4514 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4518 * Since code exists that uses the custom extension handler for CT, look
4519 * for this and throw an error if they have already registered to use CT.
4521 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4522 TLSEXT_TYPE_signed_certificate_timestamp
))
4524 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4525 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4529 if (callback
!= NULL
) {
4531 * If we are validating CT, then we MUST accept SCTs served via OCSP
4533 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4537 s
->ct_validation_callback
= callback
;
4538 s
->ct_validation_callback_arg
= arg
;
4543 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4544 ssl_ct_validation_cb callback
, void *arg
)
4547 * Since code exists that uses the custom extension handler for CT, look for
4548 * this and throw an error if they have already registered to use CT.
4550 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4551 TLSEXT_TYPE_signed_certificate_timestamp
))
4553 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4554 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4558 ctx
->ct_validation_callback
= callback
;
4559 ctx
->ct_validation_callback_arg
= arg
;
4563 int SSL_ct_is_enabled(const SSL
*s
)
4565 return s
->ct_validation_callback
!= NULL
;
4568 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4570 return ctx
->ct_validation_callback
!= NULL
;
4573 int ssl_validate_ct(SSL
*s
)
4576 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4578 SSL_DANE
*dane
= &s
->dane
;
4579 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4580 const STACK_OF(SCT
) *scts
;
4583 * If no callback is set, the peer is anonymous, or its chain is invalid,
4584 * skip SCT validation - just return success. Applications that continue
4585 * handshakes without certificates, with unverified chains, or pinned leaf
4586 * certificates are outside the scope of the WebPKI and CT.
4588 * The above exclusions notwithstanding the vast majority of peers will
4589 * have rather ordinary certificate chains validated by typical
4590 * applications that perform certificate verification and therefore will
4591 * process SCTs when enabled.
4593 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4594 s
->verify_result
!= X509_V_OK
||
4595 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4599 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4600 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4602 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4603 switch (dane
->mtlsa
->usage
) {
4604 case DANETLS_USAGE_DANE_TA
:
4605 case DANETLS_USAGE_DANE_EE
:
4610 ctx
= CT_POLICY_EVAL_CTX_new();
4612 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4616 issuer
= sk_X509_value(s
->verified_chain
, 1);
4617 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4618 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4619 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4620 CT_POLICY_EVAL_CTX_set_time(
4621 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4623 scts
= SSL_get0_peer_scts(s
);
4626 * This function returns success (> 0) only when all the SCTs are valid, 0
4627 * when some are invalid, and < 0 on various internal errors (out of
4628 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4629 * reason to abort the handshake, that decision is up to the callback.
4630 * Therefore, we error out only in the unexpected case that the return
4631 * value is negative.
4633 * XXX: One might well argue that the return value of this function is an
4634 * unfortunate design choice. Its job is only to determine the validation
4635 * status of each of the provided SCTs. So long as it correctly separates
4636 * the wheat from the chaff it should return success. Failure in this case
4637 * ought to correspond to an inability to carry out its duties.
4639 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4640 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4644 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4646 ret
= 0; /* This function returns 0 on failure */
4649 CT_POLICY_EVAL_CTX_free(ctx
);
4651 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4652 * failure return code here. Also the application may wish the complete
4653 * the handshake, and then disconnect cleanly at a higher layer, after
4654 * checking the verification status of the completed connection.
4656 * We therefore force a certificate verification failure which will be
4657 * visible via SSL_get_verify_result() and cached as part of any resumed
4660 * Note: the permissive callback is for information gathering only, always
4661 * returns success, and does not affect verification status. Only the
4662 * strict callback or a custom application-specified callback can trigger
4663 * connection failure or record a verification error.
4666 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4670 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4672 switch (validation_mode
) {
4674 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4676 case SSL_CT_VALIDATION_PERMISSIVE
:
4677 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4678 case SSL_CT_VALIDATION_STRICT
:
4679 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4683 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4685 switch (validation_mode
) {
4687 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4689 case SSL_CT_VALIDATION_PERMISSIVE
:
4690 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4691 case SSL_CT_VALIDATION_STRICT
:
4692 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4696 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4698 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4701 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4703 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4706 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4708 CTLOG_STORE_free(ctx
->ctlog_store
);
4709 ctx
->ctlog_store
= logs
;
4712 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4714 return ctx
->ctlog_store
;
4717 #endif /* OPENSSL_NO_CT */
4719 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4722 c
->client_hello_cb
= cb
;
4723 c
->client_hello_cb_arg
= arg
;
4726 int SSL_client_hello_isv2(SSL
*s
)
4728 if (s
->clienthello
== NULL
)
4730 return s
->clienthello
->isv2
;
4733 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4735 if (s
->clienthello
== NULL
)
4737 return s
->clienthello
->legacy_version
;
4740 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4742 if (s
->clienthello
== NULL
)
4745 *out
= s
->clienthello
->random
;
4746 return SSL3_RANDOM_SIZE
;
4749 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4751 if (s
->clienthello
== NULL
)
4754 *out
= s
->clienthello
->session_id
;
4755 return s
->clienthello
->session_id_len
;
4758 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4760 if (s
->clienthello
== NULL
)
4763 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4764 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4767 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4769 if (s
->clienthello
== NULL
)
4772 *out
= s
->clienthello
->compressions
;
4773 return s
->clienthello
->compressions_len
;
4776 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4782 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4784 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4785 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4789 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4790 if (present
== NULL
)
4792 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4793 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4795 if (ext
->received_order
>= num
)
4797 present
[ext
->received_order
] = ext
->type
;
4804 OPENSSL_free(present
);
4808 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4814 if (s
->clienthello
== NULL
)
4816 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4817 r
= s
->clienthello
->pre_proc_exts
+ i
;
4818 if (r
->present
&& r
->type
== type
) {
4820 *out
= PACKET_data(&r
->data
);
4822 *outlen
= PACKET_remaining(&r
->data
);
4829 int SSL_free_buffers(SSL
*ssl
)
4831 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4833 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4836 RECORD_LAYER_release(rl
);
4840 int SSL_alloc_buffers(SSL
*ssl
)
4842 return ssl3_setup_buffers(ssl
);
4845 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4847 ctx
->keylog_callback
= cb
;
4850 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4852 return ctx
->keylog_callback
;
4855 static int nss_keylog_int(const char *prefix
,
4857 const uint8_t *parameter_1
,
4858 size_t parameter_1_len
,
4859 const uint8_t *parameter_2
,
4860 size_t parameter_2_len
)
4863 char *cursor
= NULL
;
4868 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4871 * Our output buffer will contain the following strings, rendered with
4872 * space characters in between, terminated by a NULL character: first the
4873 * prefix, then the first parameter, then the second parameter. The
4874 * meaning of each parameter depends on the specific key material being
4875 * logged. Note that the first and second parameters are encoded in
4876 * hexadecimal, so we need a buffer that is twice their lengths.
4878 prefix_len
= strlen(prefix
);
4879 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4880 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4881 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4885 strcpy(cursor
, prefix
);
4886 cursor
+= prefix_len
;
4889 for (i
= 0; i
< parameter_1_len
; i
++) {
4890 sprintf(cursor
, "%02x", parameter_1
[i
]);
4895 for (i
= 0; i
< parameter_2_len
; i
++) {
4896 sprintf(cursor
, "%02x", parameter_2
[i
]);
4901 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4907 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4908 const uint8_t *encrypted_premaster
,
4909 size_t encrypted_premaster_len
,
4910 const uint8_t *premaster
,
4911 size_t premaster_len
)
4913 if (encrypted_premaster_len
< 8) {
4914 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4918 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4919 return nss_keylog_int("RSA",
4921 encrypted_premaster
,
4927 int ssl_log_secret(SSL
*ssl
,
4929 const uint8_t *secret
,
4932 return nss_keylog_int(label
,
4934 ssl
->s3
->client_random
,
4940 #define SSLV2_CIPHER_LEN 3
4942 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4947 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4949 if (PACKET_remaining(cipher_suites
) == 0) {
4950 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4951 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4955 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4956 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4957 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4958 *al
= SSL_AD_DECODE_ERROR
;
4962 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4963 s
->s3
->tmp
.ciphers_raw
= NULL
;
4964 s
->s3
->tmp
.ciphers_rawlen
= 0;
4967 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4968 PACKET sslv2ciphers
= *cipher_suites
;
4969 unsigned int leadbyte
;
4973 * We store the raw ciphers list in SSLv3+ format so we need to do some
4974 * preprocessing to convert the list first. If there are any SSLv2 only
4975 * ciphersuites with a non-zero leading byte then we are going to
4976 * slightly over allocate because we won't store those. But that isn't a
4979 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4980 s
->s3
->tmp
.ciphers_raw
= raw
;
4982 *al
= SSL_AD_INTERNAL_ERROR
;
4985 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4986 PACKET_remaining(&sslv2ciphers
) > 0;
4987 raw
+= TLS_CIPHER_LEN
) {
4988 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4990 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4993 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4994 *al
= SSL_AD_DECODE_ERROR
;
4995 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4996 s
->s3
->tmp
.ciphers_raw
= NULL
;
4997 s
->s3
->tmp
.ciphers_rawlen
= 0;
5001 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5003 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5004 &s
->s3
->tmp
.ciphers_rawlen
)) {
5005 *al
= SSL_AD_INTERNAL_ERROR
;
5013 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5014 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5015 STACK_OF(SSL_CIPHER
) **scsvs
)
5020 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5022 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5025 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5026 STACK_OF(SSL_CIPHER
) **skp
,
5027 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5028 int sslv2format
, int *al
)
5030 const SSL_CIPHER
*c
;
5031 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5032 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5034 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5035 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5037 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5039 if (PACKET_remaining(cipher_suites
) == 0) {
5040 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5041 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5045 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5046 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5047 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5048 *al
= SSL_AD_DECODE_ERROR
;
5052 sk
= sk_SSL_CIPHER_new_null();
5053 scsvs
= sk_SSL_CIPHER_new_null();
5054 if (sk
== NULL
|| scsvs
== NULL
) {
5055 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5056 *al
= SSL_AD_INTERNAL_ERROR
;
5060 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5062 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5063 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5064 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5066 if (sslv2format
&& cipher
[0] != '\0')
5069 /* For SSLv2-compat, ignore leading 0-byte. */
5070 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5072 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5073 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5074 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5075 *al
= SSL_AD_INTERNAL_ERROR
;
5080 if (PACKET_remaining(cipher_suites
) > 0) {
5081 *al
= SSL_AD_DECODE_ERROR
;
5082 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5089 sk_SSL_CIPHER_free(sk
);
5090 if (scsvs_out
!= NULL
)
5093 sk_SSL_CIPHER_free(scsvs
);
5096 sk_SSL_CIPHER_free(sk
);
5097 sk_SSL_CIPHER_free(scsvs
);
5101 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5103 ctx
->max_early_data
= max_early_data
;
5108 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5110 return ctx
->max_early_data
;
5113 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5115 s
->max_early_data
= max_early_data
;
5120 uint32_t SSL_get_max_early_data(const SSL
*s
)
5122 return s
->max_early_data
;
5125 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5127 if (s
->drbg
!= NULL
)
5128 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5129 return RAND_bytes(rnd
, (int)size
);