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/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include "internal/cryptlib.h"
24 #include "internal/rand.h"
25 #include "internal/refcount.h"
27 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
29 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
31 * evil casts, but these functions are only called if there's a library
34 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
35 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
36 ssl_undefined_function
,
37 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
38 ssl_undefined_function
,
39 (int (*)(SSL
*, int))ssl_undefined_function
,
40 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
41 ssl_undefined_function
,
42 NULL
, /* client_finished_label */
43 0, /* client_finished_label_len */
44 NULL
, /* server_finished_label */
45 0, /* server_finished_label_len */
46 (int (*)(int))ssl_undefined_function
,
47 (int (*)(SSL
*, unsigned char *, size_t, const char *,
48 size_t, const unsigned char *, size_t,
49 int use_context
))ssl_undefined_function
,
52 struct ssl_async_args
{
56 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
58 int (*func_read
) (SSL
*, void *, size_t, size_t *);
59 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
60 int (*func_other
) (SSL
*);
70 DANETLS_MATCHING_FULL
, 0, NID_undef
73 DANETLS_MATCHING_2256
, 1, NID_sha256
76 DANETLS_MATCHING_2512
, 2, NID_sha512
80 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
84 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
85 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
88 if (dctx
->mdevp
!= NULL
)
91 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
92 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
94 if (mdord
== NULL
|| mdevp
== NULL
) {
97 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
101 /* Install default entries */
102 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
105 if (dane_mds
[i
].nid
== NID_undef
||
106 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
108 mdevp
[dane_mds
[i
].mtype
] = md
;
109 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
119 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
121 OPENSSL_free(dctx
->mdevp
);
124 OPENSSL_free(dctx
->mdord
);
129 static void tlsa_free(danetls_record
*t
)
133 OPENSSL_free(t
->data
);
134 EVP_PKEY_free(t
->spki
);
138 static void dane_final(SSL_DANE
*dane
)
140 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
143 sk_X509_pop_free(dane
->certs
, X509_free
);
146 X509_free(dane
->mcert
);
154 * dane_copy - Copy dane configuration, sans verification state.
156 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
161 if (!DANETLS_ENABLED(&from
->dane
))
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
);
174 num
= sk_danetls_record_num(from
->dane
.trecs
);
175 for (i
= 0; i
< num
; ++i
) {
176 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
178 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
179 t
->data
, t
->dlen
) <= 0)
185 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
186 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
190 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
191 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
195 if (mtype
> dctx
->mdmax
) {
196 const EVP_MD
**mdevp
;
198 int n
= ((int)mtype
) + 1;
200 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
202 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
207 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
209 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
214 /* Zero-fill any gaps */
215 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
223 dctx
->mdevp
[mtype
] = md
;
224 /* Coerce ordinal of disabled matching types to 0 */
225 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
230 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
232 if (mtype
> dane
->dctx
->mdmax
)
234 return dane
->dctx
->mdevp
[mtype
];
237 static int dane_tlsa_add(SSL_DANE
*dane
,
240 uint8_t mtype
, unsigned char *data
, size_t dlen
)
243 const EVP_MD
*md
= NULL
;
244 int ilen
= (int)dlen
;
248 if (dane
->trecs
== NULL
) {
249 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
253 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
254 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
258 if (usage
> DANETLS_USAGE_LAST
) {
259 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
263 if (selector
> DANETLS_SELECTOR_LAST
) {
264 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
268 if (mtype
!= DANETLS_MATCHING_FULL
) {
269 md
= tlsa_md_get(dane
, mtype
);
271 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
276 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
281 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
285 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
286 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
291 t
->selector
= selector
;
293 t
->data
= OPENSSL_malloc(dlen
);
294 if (t
->data
== NULL
) {
296 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
299 memcpy(t
->data
, data
, dlen
);
302 /* Validate and cache full certificate or public key */
303 if (mtype
== DANETLS_MATCHING_FULL
) {
304 const unsigned char *p
= data
;
306 EVP_PKEY
*pkey
= NULL
;
309 case DANETLS_SELECTOR_CERT
:
310 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
311 dlen
!= (size_t)(p
- data
)) {
313 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
316 if (X509_get0_pubkey(cert
) == NULL
) {
318 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
322 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
328 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
329 * records that contain full certificates of trust-anchors that are
330 * not present in the wire chain. For usage PKIX-TA(0), we augment
331 * the chain with untrusted Full(0) certificates from DNS, in case
332 * they are missing from the chain.
334 if ((dane
->certs
== NULL
&&
335 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
336 !sk_X509_push(dane
->certs
, cert
)) {
337 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
344 case DANETLS_SELECTOR_SPKI
:
345 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
346 dlen
!= (size_t)(p
- data
)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
353 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
354 * records that contain full bare keys of trust-anchors that are
355 * not present in the wire chain.
357 if (usage
== DANETLS_USAGE_DANE_TA
)
366 * Find the right insertion point for the new record.
368 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
369 * they can be processed first, as they require no chain building, and no
370 * expiration or hostname checks. Because DANE-EE(3) is numerically
371 * largest, this is accomplished via descending sort by "usage".
373 * We also sort in descending order by matching ordinal to simplify
374 * the implementation of digest agility in the verification code.
376 * The choice of order for the selector is not significant, so we
377 * use the same descending order for consistency.
379 num
= sk_danetls_record_num(dane
->trecs
);
380 for (i
= 0; i
< num
; ++i
) {
381 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
383 if (rec
->usage
> usage
)
385 if (rec
->usage
< usage
)
387 if (rec
->selector
> selector
)
389 if (rec
->selector
< selector
)
391 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
396 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
398 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
401 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
407 * Return 0 if there is only one version configured and it was disabled
408 * at configure time. Return 1 otherwise.
410 static int ssl_check_allowed_versions(int min_version
, int max_version
)
412 int minisdtls
= 0, maxisdtls
= 0;
414 /* Figure out if we're doing DTLS versions or TLS versions */
415 if (min_version
== DTLS1_BAD_VER
416 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
418 if (max_version
== DTLS1_BAD_VER
419 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
421 /* A wildcard version of 0 could be DTLS or TLS. */
422 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
423 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
424 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
428 if (minisdtls
|| maxisdtls
) {
429 /* Do DTLS version checks. */
430 if (min_version
== 0)
431 /* Ignore DTLS1_BAD_VER */
432 min_version
= DTLS1_VERSION
;
433 if (max_version
== 0)
434 max_version
= DTLS1_2_VERSION
;
435 #ifdef OPENSSL_NO_DTLS1_2
436 if (max_version
== DTLS1_2_VERSION
)
437 max_version
= DTLS1_VERSION
;
439 #ifdef OPENSSL_NO_DTLS1
440 if (min_version
== DTLS1_VERSION
)
441 min_version
= DTLS1_2_VERSION
;
443 /* Done massaging versions; do the check. */
445 #ifdef OPENSSL_NO_DTLS1
446 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
447 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
449 #ifdef OPENSSL_NO_DTLS1_2
450 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
451 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
456 /* Regular TLS version checks. */
457 if (min_version
== 0)
458 min_version
= SSL3_VERSION
;
459 if (max_version
== 0)
460 max_version
= TLS1_3_VERSION
;
461 #ifdef OPENSSL_NO_TLS1_3
462 if (max_version
== TLS1_3_VERSION
)
463 max_version
= TLS1_2_VERSION
;
465 #ifdef OPENSSL_NO_TLS1_2
466 if (max_version
== TLS1_2_VERSION
)
467 max_version
= TLS1_1_VERSION
;
469 #ifdef OPENSSL_NO_TLS1_1
470 if (max_version
== TLS1_1_VERSION
)
471 max_version
= TLS1_VERSION
;
473 #ifdef OPENSSL_NO_TLS1
474 if (max_version
== TLS1_VERSION
)
475 max_version
= SSL3_VERSION
;
477 #ifdef OPENSSL_NO_SSL3
478 if (min_version
== SSL3_VERSION
)
479 min_version
= TLS1_VERSION
;
481 #ifdef OPENSSL_NO_TLS1
482 if (min_version
== TLS1_VERSION
)
483 min_version
= TLS1_1_VERSION
;
485 #ifdef OPENSSL_NO_TLS1_1
486 if (min_version
== TLS1_1_VERSION
)
487 min_version
= TLS1_2_VERSION
;
489 #ifdef OPENSSL_NO_TLS1_2
490 if (min_version
== TLS1_2_VERSION
)
491 min_version
= TLS1_3_VERSION
;
493 /* Done massaging versions; do the check. */
495 #ifdef OPENSSL_NO_SSL3
496 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
498 #ifdef OPENSSL_NO_TLS1
499 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
501 #ifdef OPENSSL_NO_TLS1_1
502 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
504 #ifdef OPENSSL_NO_TLS1_2
505 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
507 #ifdef OPENSSL_NO_TLS1_3
508 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
516 static void clear_ciphers(SSL
*s
)
518 /* clear the current cipher */
519 ssl_clear_cipher_ctx(s
);
520 ssl_clear_hash_ctx(&s
->read_hash
);
521 ssl_clear_hash_ctx(&s
->write_hash
);
524 int SSL_clear(SSL
*s
)
526 if (s
->method
== NULL
) {
527 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
531 if (ssl_clear_bad_session(s
)) {
532 SSL_SESSION_free(s
->session
);
535 SSL_SESSION_free(s
->psksession
);
536 s
->psksession
= NULL
;
542 if (s
->renegotiate
) {
543 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
547 ossl_statem_clear(s
);
549 s
->version
= s
->method
->version
;
550 s
->client_version
= s
->version
;
551 s
->rwstate
= SSL_NOTHING
;
553 BUF_MEM_free(s
->init_buf
);
558 s
->key_update
= SSL_KEY_UPDATE_NONE
;
560 /* Reset DANE verification result state */
563 X509_free(s
->dane
.mcert
);
564 s
->dane
.mcert
= NULL
;
565 s
->dane
.mtlsa
= NULL
;
567 /* Clear the verification result peername */
568 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
571 * Check to see if we were changed into a different method, if so, revert
574 if (s
->method
!= s
->ctx
->method
) {
575 s
->method
->ssl_free(s
);
576 s
->method
= s
->ctx
->method
;
577 if (!s
->method
->ssl_new(s
))
580 if (!s
->method
->ssl_clear(s
))
584 RECORD_LAYER_clear(&s
->rlayer
);
589 /** Used to change an SSL_CTXs default SSL method type */
590 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
592 STACK_OF(SSL_CIPHER
) *sk
;
596 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
597 &(ctx
->cipher_list_by_id
),
598 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
599 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
600 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
606 SSL
*SSL_new(SSL_CTX
*ctx
)
611 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
614 if (ctx
->method
== NULL
) {
615 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
619 s
= OPENSSL_zalloc(sizeof(*s
));
623 s
->lock
= CRYPTO_THREAD_lock_new();
628 * If not using the standard RAND (say for fuzzing), then don't use a
631 if (RAND_get_rand_method() == RAND_OpenSSL()) {
632 s
->drbg
= RAND_DRBG_new(NID_aes_128_ctr
, RAND_DRBG_FLAG_CTR_USE_DF
,
633 RAND_DRBG_get0_global());
635 || RAND_DRBG_instantiate(s
->drbg
, NULL
, 0) == 0) {
636 CRYPTO_THREAD_lock_free(s
->lock
);
641 RECORD_LAYER_init(&s
->rlayer
, s
);
643 s
->options
= ctx
->options
;
644 s
->dane
.flags
= ctx
->dane
.flags
;
645 s
->min_proto_version
= ctx
->min_proto_version
;
646 s
->max_proto_version
= ctx
->max_proto_version
;
648 s
->max_cert_list
= ctx
->max_cert_list
;
650 s
->max_early_data
= ctx
->max_early_data
;
653 * Earlier library versions used to copy the pointer to the CERT, not
654 * its contents; only when setting new parameters for the per-SSL
655 * copy, ssl_cert_new would be called (and the direct reference to
656 * the per-SSL_CTX settings would be lost, but those still were
657 * indirectly accessed for various purposes, and for that reason they
658 * used to be known as s->ctx->default_cert). Now we don't look at the
659 * SSL_CTX's CERT after having duplicated it once.
661 s
->cert
= ssl_cert_dup(ctx
->cert
);
665 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
666 s
->msg_callback
= ctx
->msg_callback
;
667 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
668 s
->verify_mode
= ctx
->verify_mode
;
669 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
670 s
->record_padding_cb
= ctx
->record_padding_cb
;
671 s
->record_padding_arg
= ctx
->record_padding_arg
;
672 s
->block_padding
= ctx
->block_padding
;
673 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
674 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
676 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
677 s
->verify_callback
= ctx
->default_verify_callback
;
678 s
->generate_session_id
= ctx
->generate_session_id
;
680 s
->param
= X509_VERIFY_PARAM_new();
681 if (s
->param
== NULL
)
683 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
684 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
685 s
->max_send_fragment
= ctx
->max_send_fragment
;
686 s
->split_send_fragment
= ctx
->split_send_fragment
;
687 s
->max_pipelines
= ctx
->max_pipelines
;
688 if (s
->max_pipelines
> 1)
689 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
690 if (ctx
->default_read_buf_len
> 0)
691 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
696 s
->ext
.debug_arg
= NULL
;
697 s
->ext
.ticket_expected
= 0;
698 s
->ext
.status_type
= ctx
->ext
.status_type
;
699 s
->ext
.status_expected
= 0;
700 s
->ext
.ocsp
.ids
= NULL
;
701 s
->ext
.ocsp
.exts
= NULL
;
702 s
->ext
.ocsp
.resp
= NULL
;
703 s
->ext
.ocsp
.resp_len
= 0;
705 s
->session_ctx
= ctx
;
706 #ifndef OPENSSL_NO_EC
707 if (ctx
->ext
.ecpointformats
) {
708 s
->ext
.ecpointformats
=
709 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
710 ctx
->ext
.ecpointformats_len
);
711 if (!s
->ext
.ecpointformats
)
713 s
->ext
.ecpointformats_len
=
714 ctx
->ext
.ecpointformats_len
;
716 if (ctx
->ext
.supportedgroups
) {
717 s
->ext
.supportedgroups
=
718 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
719 ctx
->ext
.supportedgroups_len
);
720 if (!s
->ext
.supportedgroups
)
722 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
725 #ifndef OPENSSL_NO_NEXTPROTONEG
729 if (s
->ctx
->ext
.alpn
) {
730 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
731 if (s
->ext
.alpn
== NULL
)
733 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
734 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
737 s
->verified_chain
= NULL
;
738 s
->verify_result
= X509_V_OK
;
740 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
741 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
743 s
->method
= ctx
->method
;
745 s
->key_update
= SSL_KEY_UPDATE_NONE
;
747 if (!s
->method
->ssl_new(s
))
750 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
755 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
758 #ifndef OPENSSL_NO_PSK
759 s
->psk_client_callback
= ctx
->psk_client_callback
;
760 s
->psk_server_callback
= ctx
->psk_server_callback
;
762 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
763 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
767 #ifndef OPENSSL_NO_CT
768 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
769 ctx
->ct_validation_callback_arg
))
776 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
780 int SSL_is_dtls(const SSL
*s
)
782 return SSL_IS_DTLS(s
) ? 1 : 0;
785 int SSL_up_ref(SSL
*s
)
789 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
792 REF_PRINT_COUNT("SSL", s
);
793 REF_ASSERT_ISNT(i
< 2);
794 return ((i
> 1) ? 1 : 0);
797 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
798 unsigned int sid_ctx_len
)
800 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
801 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
802 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
805 ctx
->sid_ctx_length
= sid_ctx_len
;
806 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
811 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
812 unsigned int sid_ctx_len
)
814 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
815 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
816 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
819 ssl
->sid_ctx_length
= sid_ctx_len
;
820 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
825 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
827 CRYPTO_THREAD_write_lock(ctx
->lock
);
828 ctx
->generate_session_id
= cb
;
829 CRYPTO_THREAD_unlock(ctx
->lock
);
833 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
835 CRYPTO_THREAD_write_lock(ssl
->lock
);
836 ssl
->generate_session_id
= cb
;
837 CRYPTO_THREAD_unlock(ssl
->lock
);
841 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
845 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
846 * we can "construct" a session to give us the desired check - i.e. to
847 * find if there's a session in the hash table that would conflict with
848 * any new session built out of this id/id_len and the ssl_version in use
853 if (id_len
> sizeof r
.session_id
)
856 r
.ssl_version
= ssl
->version
;
857 r
.session_id_length
= id_len
;
858 memcpy(r
.session_id
, id
, id_len
);
860 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
861 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
862 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
866 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
868 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
871 int SSL_set_purpose(SSL
*s
, int purpose
)
873 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
876 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
878 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
881 int SSL_set_trust(SSL
*s
, int trust
)
883 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
886 int SSL_set1_host(SSL
*s
, const char *hostname
)
888 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
891 int SSL_add1_host(SSL
*s
, const char *hostname
)
893 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
896 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
898 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
901 const char *SSL_get0_peername(SSL
*s
)
903 return X509_VERIFY_PARAM_get0_peername(s
->param
);
906 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
908 return dane_ctx_enable(&ctx
->dane
);
911 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
913 unsigned long orig
= ctx
->dane
.flags
;
915 ctx
->dane
.flags
|= flags
;
919 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
921 unsigned long orig
= ctx
->dane
.flags
;
923 ctx
->dane
.flags
&= ~flags
;
927 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
929 SSL_DANE
*dane
= &s
->dane
;
931 if (s
->ctx
->dane
.mdmax
== 0) {
932 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
935 if (dane
->trecs
!= NULL
) {
936 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
941 * Default SNI name. This rejects empty names, while set1_host below
942 * accepts them and disables host name checks. To avoid side-effects with
943 * invalid input, set the SNI name first.
945 if (s
->ext
.hostname
== NULL
) {
946 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
947 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
952 /* Primary RFC6125 reference identifier */
953 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
954 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
960 dane
->dctx
= &s
->ctx
->dane
;
961 dane
->trecs
= sk_danetls_record_new_null();
963 if (dane
->trecs
== NULL
) {
964 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
970 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
972 unsigned long orig
= ssl
->dane
.flags
;
974 ssl
->dane
.flags
|= flags
;
978 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
980 unsigned long orig
= ssl
->dane
.flags
;
982 ssl
->dane
.flags
&= ~flags
;
986 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
988 SSL_DANE
*dane
= &s
->dane
;
990 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
994 *mcert
= dane
->mcert
;
996 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1001 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1002 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1004 SSL_DANE
*dane
= &s
->dane
;
1006 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1010 *usage
= dane
->mtlsa
->usage
;
1012 *selector
= dane
->mtlsa
->selector
;
1014 *mtype
= dane
->mtlsa
->mtype
;
1016 *data
= dane
->mtlsa
->data
;
1018 *dlen
= dane
->mtlsa
->dlen
;
1023 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1028 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1029 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1031 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1034 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1037 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1040 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1042 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1045 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1047 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1050 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1055 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1060 void SSL_certs_clear(SSL
*s
)
1062 ssl_cert_clear_certs(s
->cert
);
1065 void SSL_free(SSL
*s
)
1072 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1073 REF_PRINT_COUNT("SSL", s
);
1076 REF_ASSERT_ISNT(i
< 0);
1078 X509_VERIFY_PARAM_free(s
->param
);
1079 dane_final(&s
->dane
);
1080 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1082 /* Ignore return value */
1083 ssl_free_wbio_buffer(s
);
1085 BIO_free_all(s
->wbio
);
1086 BIO_free_all(s
->rbio
);
1088 BUF_MEM_free(s
->init_buf
);
1090 /* add extra stuff */
1091 sk_SSL_CIPHER_free(s
->cipher_list
);
1092 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1094 /* Make the next call work :-) */
1095 if (s
->session
!= NULL
) {
1096 ssl_clear_bad_session(s
);
1097 SSL_SESSION_free(s
->session
);
1099 SSL_SESSION_free(s
->psksession
);
1103 ssl_cert_free(s
->cert
);
1104 /* Free up if allocated */
1106 OPENSSL_free(s
->ext
.hostname
);
1107 SSL_CTX_free(s
->session_ctx
);
1108 #ifndef OPENSSL_NO_EC
1109 OPENSSL_free(s
->ext
.ecpointformats
);
1110 OPENSSL_free(s
->ext
.supportedgroups
);
1111 #endif /* OPENSSL_NO_EC */
1112 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1113 #ifndef OPENSSL_NO_OCSP
1114 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1116 #ifndef OPENSSL_NO_CT
1117 SCT_LIST_free(s
->scts
);
1118 OPENSSL_free(s
->ext
.scts
);
1120 OPENSSL_free(s
->ext
.ocsp
.resp
);
1121 OPENSSL_free(s
->ext
.alpn
);
1122 OPENSSL_free(s
->ext
.tls13_cookie
);
1123 OPENSSL_free(s
->clienthello
);
1125 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1127 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1129 if (s
->method
!= NULL
)
1130 s
->method
->ssl_free(s
);
1132 RECORD_LAYER_release(&s
->rlayer
);
1134 SSL_CTX_free(s
->ctx
);
1136 ASYNC_WAIT_CTX_free(s
->waitctx
);
1138 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1139 OPENSSL_free(s
->ext
.npn
);
1142 #ifndef OPENSSL_NO_SRTP
1143 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1146 RAND_DRBG_free(s
->drbg
);
1147 CRYPTO_THREAD_lock_free(s
->lock
);
1152 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1154 BIO_free_all(s
->rbio
);
1158 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1161 * If the output buffering BIO is still in place, remove it
1163 if (s
->bbio
!= NULL
)
1164 s
->wbio
= BIO_pop(s
->wbio
);
1166 BIO_free_all(s
->wbio
);
1169 /* Re-attach |bbio| to the new |wbio|. */
1170 if (s
->bbio
!= NULL
)
1171 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1174 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1177 * For historical reasons, this function has many different cases in
1178 * ownership handling.
1181 /* If nothing has changed, do nothing */
1182 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1186 * If the two arguments are equal then one fewer reference is granted by the
1187 * caller than we want to take
1189 if (rbio
!= NULL
&& rbio
== wbio
)
1193 * If only the wbio is changed only adopt one reference.
1195 if (rbio
== SSL_get_rbio(s
)) {
1196 SSL_set0_wbio(s
, wbio
);
1200 * There is an asymmetry here for historical reasons. If only the rbio is
1201 * changed AND the rbio and wbio were originally different, then we only
1202 * adopt one reference.
1204 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1205 SSL_set0_rbio(s
, rbio
);
1209 /* Otherwise, adopt both references. */
1210 SSL_set0_rbio(s
, rbio
);
1211 SSL_set0_wbio(s
, wbio
);
1214 BIO
*SSL_get_rbio(const SSL
*s
)
1219 BIO
*SSL_get_wbio(const SSL
*s
)
1221 if (s
->bbio
!= NULL
) {
1223 * If |bbio| is active, the true caller-configured BIO is its
1226 return BIO_next(s
->bbio
);
1231 int SSL_get_fd(const SSL
*s
)
1233 return SSL_get_rfd(s
);
1236 int SSL_get_rfd(const SSL
*s
)
1241 b
= SSL_get_rbio(s
);
1242 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1244 BIO_get_fd(r
, &ret
);
1248 int SSL_get_wfd(const SSL
*s
)
1253 b
= SSL_get_wbio(s
);
1254 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1256 BIO_get_fd(r
, &ret
);
1260 #ifndef OPENSSL_NO_SOCK
1261 int SSL_set_fd(SSL
*s
, int fd
)
1266 bio
= BIO_new(BIO_s_socket());
1269 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1272 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1273 SSL_set_bio(s
, bio
, bio
);
1279 int SSL_set_wfd(SSL
*s
, int fd
)
1281 BIO
*rbio
= SSL_get_rbio(s
);
1283 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1284 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1285 BIO
*bio
= BIO_new(BIO_s_socket());
1288 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1291 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1292 SSL_set0_wbio(s
, bio
);
1295 SSL_set0_wbio(s
, rbio
);
1300 int SSL_set_rfd(SSL
*s
, int fd
)
1302 BIO
*wbio
= SSL_get_wbio(s
);
1304 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1305 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1306 BIO
*bio
= BIO_new(BIO_s_socket());
1309 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1312 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1313 SSL_set0_rbio(s
, bio
);
1316 SSL_set0_rbio(s
, wbio
);
1323 /* return length of latest Finished message we sent, copy to 'buf' */
1324 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1328 if (s
->s3
!= NULL
) {
1329 ret
= s
->s3
->tmp
.finish_md_len
;
1332 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1337 /* return length of latest Finished message we expected, copy to 'buf' */
1338 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1342 if (s
->s3
!= NULL
) {
1343 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1346 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1351 int SSL_get_verify_mode(const SSL
*s
)
1353 return (s
->verify_mode
);
1356 int SSL_get_verify_depth(const SSL
*s
)
1358 return X509_VERIFY_PARAM_get_depth(s
->param
);
1361 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1362 return (s
->verify_callback
);
1365 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1367 return (ctx
->verify_mode
);
1370 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1372 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1375 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1376 return (ctx
->default_verify_callback
);
1379 void SSL_set_verify(SSL
*s
, int mode
,
1380 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1382 s
->verify_mode
= mode
;
1383 if (callback
!= NULL
)
1384 s
->verify_callback
= callback
;
1387 void SSL_set_verify_depth(SSL
*s
, int depth
)
1389 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1392 void SSL_set_read_ahead(SSL
*s
, int yes
)
1394 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1397 int SSL_get_read_ahead(const SSL
*s
)
1399 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1402 int SSL_pending(const SSL
*s
)
1404 size_t pending
= s
->method
->ssl_pending(s
);
1407 * SSL_pending cannot work properly if read-ahead is enabled
1408 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1409 * impossible to fix since SSL_pending cannot report errors that may be
1410 * observed while scanning the new data. (Note that SSL_pending() is
1411 * often used as a boolean value, so we'd better not return -1.)
1413 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1414 * we just return INT_MAX.
1416 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1419 int SSL_has_pending(const SSL
*s
)
1422 * Similar to SSL_pending() but returns a 1 to indicate that we have
1423 * unprocessed data available or 0 otherwise (as opposed to the number of
1424 * bytes available). Unlike SSL_pending() this will take into account
1425 * read_ahead data. A 1 return simply indicates that we have unprocessed
1426 * data. That data may not result in any application data, or we may fail
1427 * to parse the records for some reason.
1429 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1432 return RECORD_LAYER_read_pending(&s
->rlayer
);
1435 X509
*SSL_get_peer_certificate(const SSL
*s
)
1439 if ((s
== NULL
) || (s
->session
== NULL
))
1442 r
= s
->session
->peer
;
1452 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1456 if ((s
== NULL
) || (s
->session
== NULL
))
1459 r
= s
->session
->peer_chain
;
1462 * If we are a client, cert_chain includes the peer's own certificate; if
1463 * we are a server, it does not.
1470 * Now in theory, since the calling process own 't' it should be safe to
1471 * modify. We need to be able to read f without being hassled
1473 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1476 /* Do we need to to SSL locking? */
1477 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1482 * what if we are setup for one protocol version but want to talk another
1484 if (t
->method
!= f
->method
) {
1485 t
->method
->ssl_free(t
);
1486 t
->method
= f
->method
;
1487 if (t
->method
->ssl_new(t
) == 0)
1491 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1492 ssl_cert_free(t
->cert
);
1494 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1501 /* Fix this so it checks all the valid key/cert options */
1502 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1504 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1505 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1508 if (ctx
->cert
->key
->privatekey
== NULL
) {
1509 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1512 return (X509_check_private_key
1513 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1516 /* Fix this function so that it takes an optional type parameter */
1517 int SSL_check_private_key(const SSL
*ssl
)
1520 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1523 if (ssl
->cert
->key
->x509
== NULL
) {
1524 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1527 if (ssl
->cert
->key
->privatekey
== NULL
) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1531 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1532 ssl
->cert
->key
->privatekey
));
1535 int SSL_waiting_for_async(SSL
*s
)
1543 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1545 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1549 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1552 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1553 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1555 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1559 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1563 int SSL_accept(SSL
*s
)
1565 if (s
->handshake_func
== NULL
) {
1566 /* Not properly initialized yet */
1567 SSL_set_accept_state(s
);
1570 return SSL_do_handshake(s
);
1573 int SSL_connect(SSL
*s
)
1575 if (s
->handshake_func
== NULL
) {
1576 /* Not properly initialized yet */
1577 SSL_set_connect_state(s
);
1580 return SSL_do_handshake(s
);
1583 long SSL_get_default_timeout(const SSL
*s
)
1585 return (s
->method
->get_timeout());
1588 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1589 int (*func
) (void *))
1592 if (s
->waitctx
== NULL
) {
1593 s
->waitctx
= ASYNC_WAIT_CTX_new();
1594 if (s
->waitctx
== NULL
)
1597 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1598 sizeof(struct ssl_async_args
))) {
1600 s
->rwstate
= SSL_NOTHING
;
1601 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1604 s
->rwstate
= SSL_ASYNC_PAUSED
;
1607 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1613 s
->rwstate
= SSL_NOTHING
;
1614 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1615 /* Shouldn't happen */
1620 static int ssl_io_intern(void *vargs
)
1622 struct ssl_async_args
*args
;
1627 args
= (struct ssl_async_args
*)vargs
;
1631 switch (args
->type
) {
1633 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1635 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1637 return args
->f
.func_other(s
);
1642 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1644 if (s
->handshake_func
== NULL
) {
1645 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1649 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1650 s
->rwstate
= SSL_NOTHING
;
1654 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1655 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1656 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1660 * If we are a client and haven't received the ServerHello etc then we
1663 ossl_statem_check_finish_init(s
, 0);
1665 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1666 struct ssl_async_args args
;
1672 args
.type
= READFUNC
;
1673 args
.f
.func_read
= s
->method
->ssl_read
;
1675 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1676 *readbytes
= s
->asyncrw
;
1679 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1683 int SSL_read(SSL
*s
, void *buf
, int num
)
1689 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1693 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1696 * The cast is safe here because ret should be <= INT_MAX because num is
1700 ret
= (int)readbytes
;
1705 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1707 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1714 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1719 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1720 return SSL_READ_EARLY_DATA_ERROR
;
1723 switch (s
->early_data_state
) {
1724 case SSL_EARLY_DATA_NONE
:
1725 if (!SSL_in_before(s
)) {
1726 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1727 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1728 return SSL_READ_EARLY_DATA_ERROR
;
1732 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1733 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1734 ret
= SSL_accept(s
);
1737 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1738 return SSL_READ_EARLY_DATA_ERROR
;
1742 case SSL_EARLY_DATA_READ_RETRY
:
1743 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1744 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1745 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1747 * State machine will update early_data_state to
1748 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1751 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1752 != SSL_EARLY_DATA_FINISHED_READING
)) {
1753 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1754 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1755 : SSL_READ_EARLY_DATA_ERROR
;
1758 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1761 return SSL_READ_EARLY_DATA_FINISH
;
1764 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1765 return SSL_READ_EARLY_DATA_ERROR
;
1769 int SSL_get_early_data_status(const SSL
*s
)
1771 return s
->ext
.early_data
;
1774 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1776 if (s
->handshake_func
== NULL
) {
1777 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1781 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1784 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1785 struct ssl_async_args args
;
1791 args
.type
= READFUNC
;
1792 args
.f
.func_read
= s
->method
->ssl_peek
;
1794 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1795 *readbytes
= s
->asyncrw
;
1798 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1802 int SSL_peek(SSL
*s
, void *buf
, int num
)
1808 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1812 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1815 * The cast is safe here because ret should be <= INT_MAX because num is
1819 ret
= (int)readbytes
;
1825 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1827 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1834 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1836 if (s
->handshake_func
== NULL
) {
1837 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1841 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1842 s
->rwstate
= SSL_NOTHING
;
1843 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1847 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1848 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1849 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1850 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1853 /* If we are a client and haven't sent the Finished we better do that */
1854 ossl_statem_check_finish_init(s
, 1);
1856 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1858 struct ssl_async_args args
;
1861 args
.buf
= (void *)buf
;
1863 args
.type
= WRITEFUNC
;
1864 args
.f
.func_write
= s
->method
->ssl_write
;
1866 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1867 *written
= s
->asyncrw
;
1870 return s
->method
->ssl_write(s
, buf
, num
, written
);
1874 int SSL_write(SSL
*s
, const void *buf
, int num
)
1880 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1884 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1887 * The cast is safe here because ret should be <= INT_MAX because num is
1896 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1898 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1905 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1907 int ret
, early_data_state
;
1909 switch (s
->early_data_state
) {
1910 case SSL_EARLY_DATA_NONE
:
1912 || !SSL_in_before(s
)
1913 || s
->session
== NULL
1914 || s
->session
->ext
.max_early_data
== 0) {
1915 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1916 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1921 case SSL_EARLY_DATA_CONNECT_RETRY
:
1922 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1923 ret
= SSL_connect(s
);
1926 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1931 case SSL_EARLY_DATA_WRITE_RETRY
:
1932 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1933 ret
= SSL_write_ex(s
, buf
, num
, written
);
1934 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1937 case SSL_EARLY_DATA_FINISHED_READING
:
1938 case SSL_EARLY_DATA_READ_RETRY
:
1939 early_data_state
= s
->early_data_state
;
1940 /* We are a server writing to an unauthenticated client */
1941 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1942 ret
= SSL_write_ex(s
, buf
, num
, written
);
1943 s
->early_data_state
= early_data_state
;
1947 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1952 int SSL_shutdown(SSL
*s
)
1955 * Note that this function behaves differently from what one might
1956 * expect. Return values are 0 for no success (yet), 1 for success; but
1957 * calling it once is usually not enough, even if blocking I/O is used
1958 * (see ssl3_shutdown).
1961 if (s
->handshake_func
== NULL
) {
1962 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1966 if (!SSL_in_init(s
)) {
1967 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1968 struct ssl_async_args args
;
1971 args
.type
= OTHERFUNC
;
1972 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1974 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1976 return s
->method
->ssl_shutdown(s
);
1979 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1984 int SSL_key_update(SSL
*s
, int updatetype
)
1987 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1988 * negotiated, and that it is appropriate to call SSL_key_update() instead
1989 * of SSL_renegotiate().
1991 if (!SSL_IS_TLS13(s
)) {
1992 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1996 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1997 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1998 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2002 if (!SSL_is_init_finished(s
)) {
2003 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2007 ossl_statem_set_in_init(s
, 1);
2008 s
->key_update
= updatetype
;
2012 int SSL_get_key_update_type(SSL
*s
)
2014 return s
->key_update
;
2017 int SSL_renegotiate(SSL
*s
)
2019 if (SSL_IS_TLS13(s
)) {
2020 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2024 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2025 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2032 return (s
->method
->ssl_renegotiate(s
));
2035 int SSL_renegotiate_abbreviated(SSL
*s
)
2037 if (SSL_IS_TLS13(s
)) {
2038 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2042 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2043 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2050 return (s
->method
->ssl_renegotiate(s
));
2053 int SSL_renegotiate_pending(SSL
*s
)
2056 * becomes true when negotiation is requested; false again once a
2057 * handshake has finished
2059 return (s
->renegotiate
!= 0);
2062 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2067 case SSL_CTRL_GET_READ_AHEAD
:
2068 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2069 case SSL_CTRL_SET_READ_AHEAD
:
2070 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2071 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2074 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2075 s
->msg_callback_arg
= parg
;
2079 return (s
->mode
|= larg
);
2080 case SSL_CTRL_CLEAR_MODE
:
2081 return (s
->mode
&= ~larg
);
2082 case SSL_CTRL_GET_MAX_CERT_LIST
:
2083 return (long)(s
->max_cert_list
);
2084 case SSL_CTRL_SET_MAX_CERT_LIST
:
2087 l
= (long)s
->max_cert_list
;
2088 s
->max_cert_list
= (size_t)larg
;
2090 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2091 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2093 s
->max_send_fragment
= larg
;
2094 if (s
->max_send_fragment
< s
->split_send_fragment
)
2095 s
->split_send_fragment
= s
->max_send_fragment
;
2097 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2098 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2100 s
->split_send_fragment
= larg
;
2102 case SSL_CTRL_SET_MAX_PIPELINES
:
2103 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2105 s
->max_pipelines
= larg
;
2107 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2109 case SSL_CTRL_GET_RI_SUPPORT
:
2111 return s
->s3
->send_connection_binding
;
2114 case SSL_CTRL_CERT_FLAGS
:
2115 return (s
->cert
->cert_flags
|= larg
);
2116 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2117 return (s
->cert
->cert_flags
&= ~larg
);
2119 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2121 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2123 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2124 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2126 return TLS_CIPHER_LEN
;
2128 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2129 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2131 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2135 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2136 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2137 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2138 &s
->min_proto_version
);
2139 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2140 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2141 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2142 &s
->max_proto_version
);
2144 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2148 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2151 case SSL_CTRL_SET_MSG_CALLBACK
:
2152 s
->msg_callback
= (void (*)
2153 (int write_p
, int version
, int content_type
,
2154 const void *buf
, size_t len
, SSL
*ssl
,
2159 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2163 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2165 return ctx
->sessions
;
2168 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2171 /* For some cases with ctx == NULL perform syntax checks */
2174 #ifndef OPENSSL_NO_EC
2175 case SSL_CTRL_SET_GROUPS_LIST
:
2176 return tls1_set_groups_list(NULL
, NULL
, parg
);
2178 case SSL_CTRL_SET_SIGALGS_LIST
:
2179 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2180 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2187 case SSL_CTRL_GET_READ_AHEAD
:
2188 return (ctx
->read_ahead
);
2189 case SSL_CTRL_SET_READ_AHEAD
:
2190 l
= ctx
->read_ahead
;
2191 ctx
->read_ahead
= larg
;
2194 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2195 ctx
->msg_callback_arg
= parg
;
2198 case SSL_CTRL_GET_MAX_CERT_LIST
:
2199 return (long)(ctx
->max_cert_list
);
2200 case SSL_CTRL_SET_MAX_CERT_LIST
:
2203 l
= (long)ctx
->max_cert_list
;
2204 ctx
->max_cert_list
= (size_t)larg
;
2207 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2210 l
= (long)ctx
->session_cache_size
;
2211 ctx
->session_cache_size
= (size_t)larg
;
2213 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2214 return (long)(ctx
->session_cache_size
);
2215 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2216 l
= ctx
->session_cache_mode
;
2217 ctx
->session_cache_mode
= larg
;
2219 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2220 return (ctx
->session_cache_mode
);
2222 case SSL_CTRL_SESS_NUMBER
:
2223 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2224 case SSL_CTRL_SESS_CONNECT
:
2225 return (ctx
->stats
.sess_connect
);
2226 case SSL_CTRL_SESS_CONNECT_GOOD
:
2227 return (ctx
->stats
.sess_connect_good
);
2228 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2229 return (ctx
->stats
.sess_connect_renegotiate
);
2230 case SSL_CTRL_SESS_ACCEPT
:
2231 return (ctx
->stats
.sess_accept
);
2232 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2233 return (ctx
->stats
.sess_accept_good
);
2234 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2235 return (ctx
->stats
.sess_accept_renegotiate
);
2236 case SSL_CTRL_SESS_HIT
:
2237 return (ctx
->stats
.sess_hit
);
2238 case SSL_CTRL_SESS_CB_HIT
:
2239 return (ctx
->stats
.sess_cb_hit
);
2240 case SSL_CTRL_SESS_MISSES
:
2241 return (ctx
->stats
.sess_miss
);
2242 case SSL_CTRL_SESS_TIMEOUTS
:
2243 return (ctx
->stats
.sess_timeout
);
2244 case SSL_CTRL_SESS_CACHE_FULL
:
2245 return (ctx
->stats
.sess_cache_full
);
2247 return (ctx
->mode
|= larg
);
2248 case SSL_CTRL_CLEAR_MODE
:
2249 return (ctx
->mode
&= ~larg
);
2250 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2251 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2253 ctx
->max_send_fragment
= larg
;
2254 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2255 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2257 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2258 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2260 ctx
->split_send_fragment
= larg
;
2262 case SSL_CTRL_SET_MAX_PIPELINES
:
2263 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2265 ctx
->max_pipelines
= larg
;
2267 case SSL_CTRL_CERT_FLAGS
:
2268 return (ctx
->cert
->cert_flags
|= larg
);
2269 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2270 return (ctx
->cert
->cert_flags
&= ~larg
);
2271 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2272 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2273 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2274 &ctx
->min_proto_version
);
2275 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2276 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2277 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2278 &ctx
->max_proto_version
);
2280 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2284 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2287 case SSL_CTRL_SET_MSG_CALLBACK
:
2288 ctx
->msg_callback
= (void (*)
2289 (int write_p
, int version
, int content_type
,
2290 const void *buf
, size_t len
, SSL
*ssl
,
2295 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2299 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2308 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2309 const SSL_CIPHER
*const *bp
)
2311 if ((*ap
)->id
> (*bp
)->id
)
2313 if ((*ap
)->id
< (*bp
)->id
)
2318 /** return a STACK of the ciphers available for the SSL and in order of
2320 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2323 if (s
->cipher_list
!= NULL
) {
2324 return (s
->cipher_list
);
2325 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2326 return (s
->ctx
->cipher_list
);
2332 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2334 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2336 return s
->session
->ciphers
;
2339 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2341 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2343 ciphers
= SSL_get_ciphers(s
);
2346 ssl_set_client_disabled(s
);
2347 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2348 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2349 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2351 sk
= sk_SSL_CIPHER_new_null();
2354 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2355 sk_SSL_CIPHER_free(sk
);
2363 /** return a STACK of the ciphers available for the SSL and in order of
2365 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2368 if (s
->cipher_list_by_id
!= NULL
) {
2369 return (s
->cipher_list_by_id
);
2370 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2371 return (s
->ctx
->cipher_list_by_id
);
2377 /** The old interface to get the same thing as SSL_get_ciphers() */
2378 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2380 const SSL_CIPHER
*c
;
2381 STACK_OF(SSL_CIPHER
) *sk
;
2385 sk
= SSL_get_ciphers(s
);
2386 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2388 c
= sk_SSL_CIPHER_value(sk
, n
);
2394 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2396 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2399 return ctx
->cipher_list
;
2403 /** specify the ciphers to be used by default by the SSL_CTX */
2404 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2406 STACK_OF(SSL_CIPHER
) *sk
;
2408 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2409 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2411 * ssl_create_cipher_list may return an empty stack if it was unable to
2412 * find a cipher matching the given rule string (for example if the rule
2413 * string specifies a cipher which has been disabled). This is not an
2414 * error as far as ssl_create_cipher_list is concerned, and hence
2415 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2419 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2420 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2426 /** specify the ciphers to be used by the SSL */
2427 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2429 STACK_OF(SSL_CIPHER
) *sk
;
2431 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2432 &s
->cipher_list_by_id
, str
, s
->cert
);
2433 /* see comment in SSL_CTX_set_cipher_list */
2436 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2437 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2443 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2446 STACK_OF(SSL_CIPHER
) *sk
;
2447 const SSL_CIPHER
*c
;
2450 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2454 sk
= s
->session
->ciphers
;
2456 if (sk_SSL_CIPHER_num(sk
) == 0)
2459 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2462 c
= sk_SSL_CIPHER_value(sk
, i
);
2463 n
= strlen(c
->name
);
2470 memcpy(p
, c
->name
, n
+ 1);
2479 /** return a servername extension value if provided in Client Hello, or NULL.
2480 * So far, only host_name types are defined (RFC 3546).
2483 const char *SSL_get_servername(const SSL
*s
, const int type
)
2485 if (type
!= TLSEXT_NAMETYPE_host_name
)
2488 return s
->session
&& !s
->ext
.hostname
?
2489 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2492 int SSL_get_servername_type(const SSL
*s
)
2495 && (!s
->ext
.hostname
? s
->session
->
2496 ext
.hostname
: s
->ext
.hostname
))
2497 return TLSEXT_NAMETYPE_host_name
;
2502 * SSL_select_next_proto implements the standard protocol selection. It is
2503 * expected that this function is called from the callback set by
2504 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2505 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2506 * not included in the length. A byte string of length 0 is invalid. No byte
2507 * string may be truncated. The current, but experimental algorithm for
2508 * selecting the protocol is: 1) If the server doesn't support NPN then this
2509 * is indicated to the callback. In this case, the client application has to
2510 * abort the connection or have a default application level protocol. 2) If
2511 * the server supports NPN, but advertises an empty list then the client
2512 * selects the first protocol in its list, but indicates via the API that this
2513 * fallback case was enacted. 3) Otherwise, the client finds the first
2514 * protocol in the server's list that it supports and selects this protocol.
2515 * This is because it's assumed that the server has better information about
2516 * which protocol a client should use. 4) If the client doesn't support any
2517 * of the server's advertised protocols, then this is treated the same as
2518 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2519 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2521 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2522 const unsigned char *server
,
2523 unsigned int server_len
,
2524 const unsigned char *client
, unsigned int client_len
)
2527 const unsigned char *result
;
2528 int status
= OPENSSL_NPN_UNSUPPORTED
;
2531 * For each protocol in server preference order, see if we support it.
2533 for (i
= 0; i
< server_len
;) {
2534 for (j
= 0; j
< client_len
;) {
2535 if (server
[i
] == client
[j
] &&
2536 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2537 /* We found a match */
2538 result
= &server
[i
];
2539 status
= OPENSSL_NPN_NEGOTIATED
;
2549 /* There's no overlap between our protocols and the server's list. */
2551 status
= OPENSSL_NPN_NO_OVERLAP
;
2554 *out
= (unsigned char *)result
+ 1;
2555 *outlen
= result
[0];
2559 #ifndef OPENSSL_NO_NEXTPROTONEG
2561 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2562 * client's requested protocol for this connection and returns 0. If the
2563 * client didn't request any protocol, then *data is set to NULL. Note that
2564 * the client can request any protocol it chooses. The value returned from
2565 * this function need not be a member of the list of supported protocols
2566 * provided by the callback.
2568 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2575 *len
= (unsigned int)s
->ext
.npn_len
;
2580 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2581 * a TLS server needs a list of supported protocols for Next Protocol
2582 * Negotiation. The returned list must be in wire format. The list is
2583 * returned by setting |out| to point to it and |outlen| to its length. This
2584 * memory will not be modified, but one should assume that the SSL* keeps a
2585 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2586 * wishes to advertise. Otherwise, no such extension will be included in the
2589 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2590 SSL_CTX_npn_advertised_cb_func cb
,
2593 ctx
->ext
.npn_advertised_cb
= cb
;
2594 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2598 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2599 * client needs to select a protocol from the server's provided list. |out|
2600 * must be set to point to the selected protocol (which may be within |in|).
2601 * The length of the protocol name must be written into |outlen|. The
2602 * server's advertised protocols are provided in |in| and |inlen|. The
2603 * callback can assume that |in| is syntactically valid. The client must
2604 * select a protocol. It is fatal to the connection if this callback returns
2605 * a value other than SSL_TLSEXT_ERR_OK.
2607 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2608 SSL_CTX_npn_select_cb_func cb
,
2611 ctx
->ext
.npn_select_cb
= cb
;
2612 ctx
->ext
.npn_select_cb_arg
= arg
;
2617 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2618 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2619 * length-prefixed strings). Returns 0 on success.
2621 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2622 unsigned int protos_len
)
2624 OPENSSL_free(ctx
->ext
.alpn
);
2625 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2626 if (ctx
->ext
.alpn
== NULL
) {
2627 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2630 ctx
->ext
.alpn_len
= protos_len
;
2636 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2637 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2638 * length-prefixed strings). Returns 0 on success.
2640 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2641 unsigned int protos_len
)
2643 OPENSSL_free(ssl
->ext
.alpn
);
2644 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2645 if (ssl
->ext
.alpn
== NULL
) {
2646 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2649 ssl
->ext
.alpn_len
= protos_len
;
2655 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2656 * called during ClientHello processing in order to select an ALPN protocol
2657 * from the client's list of offered protocols.
2659 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2660 SSL_CTX_alpn_select_cb_func cb
,
2663 ctx
->ext
.alpn_select_cb
= cb
;
2664 ctx
->ext
.alpn_select_cb_arg
= arg
;
2668 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2669 * On return it sets |*data| to point to |*len| bytes of protocol name
2670 * (not including the leading length-prefix byte). If the server didn't
2671 * respond with a negotiated protocol then |*len| will be zero.
2673 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2678 *data
= ssl
->s3
->alpn_selected
;
2682 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2685 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2686 const char *label
, size_t llen
,
2687 const unsigned char *context
, size_t contextlen
,
2690 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2693 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2695 contextlen
, use_context
);
2698 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2700 const unsigned char *session_id
= a
->session_id
;
2702 unsigned char tmp_storage
[4];
2704 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2705 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2706 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2707 session_id
= tmp_storage
;
2711 ((unsigned long)session_id
[0]) |
2712 ((unsigned long)session_id
[1] << 8L) |
2713 ((unsigned long)session_id
[2] << 16L) |
2714 ((unsigned long)session_id
[3] << 24L);
2719 * NB: If this function (or indeed the hash function which uses a sort of
2720 * coarser function than this one) is changed, ensure
2721 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2722 * being able to construct an SSL_SESSION that will collide with any existing
2723 * session with a matching session ID.
2725 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2727 if (a
->ssl_version
!= b
->ssl_version
)
2729 if (a
->session_id_length
!= b
->session_id_length
)
2731 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2735 * These wrapper functions should remain rather than redeclaring
2736 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2737 * variable. The reason is that the functions aren't static, they're exposed
2741 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2743 SSL_CTX
*ret
= NULL
;
2746 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2750 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2753 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2754 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2757 ret
= OPENSSL_zalloc(sizeof(*ret
));
2762 ret
->min_proto_version
= 0;
2763 ret
->max_proto_version
= 0;
2764 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2765 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2766 /* We take the system default. */
2767 ret
->session_timeout
= meth
->get_timeout();
2768 ret
->references
= 1;
2769 ret
->lock
= CRYPTO_THREAD_lock_new();
2770 if (ret
->lock
== NULL
) {
2771 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2775 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2776 ret
->verify_mode
= SSL_VERIFY_NONE
;
2777 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2780 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2781 if (ret
->sessions
== NULL
)
2783 ret
->cert_store
= X509_STORE_new();
2784 if (ret
->cert_store
== NULL
)
2786 #ifndef OPENSSL_NO_CT
2787 ret
->ctlog_store
= CTLOG_STORE_new();
2788 if (ret
->ctlog_store
== NULL
)
2791 if (!ssl_create_cipher_list(ret
->method
,
2792 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2793 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2794 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2795 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2799 ret
->param
= X509_VERIFY_PARAM_new();
2800 if (ret
->param
== NULL
)
2803 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2804 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2807 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2808 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2812 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2815 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2818 /* No compression for DTLS */
2819 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2820 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2822 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2823 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2825 /* Setup RFC5077 ticket keys */
2826 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2827 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2828 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2829 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2830 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2831 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2832 ret
->options
|= SSL_OP_NO_TICKET
;
2834 #ifndef OPENSSL_NO_SRP
2835 if (!SSL_CTX_SRP_CTX_init(ret
))
2838 #ifndef OPENSSL_NO_ENGINE
2839 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2840 # define eng_strx(x) #x
2841 # define eng_str(x) eng_strx(x)
2842 /* Use specific client engine automatically... ignore errors */
2845 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2848 ENGINE_load_builtin_engines();
2849 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2851 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2857 * Default is to connect to non-RI servers. When RI is more widely
2858 * deployed might change this.
2860 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2862 * Disable compression by default to prevent CRIME. Applications can
2863 * re-enable compression by configuring
2864 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2865 * or by using the SSL_CONF library.
2867 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2869 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2872 * Default max early data is a fully loaded single record. Could be split
2873 * across multiple records in practice
2875 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2879 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2885 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2889 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2892 REF_PRINT_COUNT("SSL_CTX", ctx
);
2893 REF_ASSERT_ISNT(i
< 2);
2894 return ((i
> 1) ? 1 : 0);
2897 void SSL_CTX_free(SSL_CTX
*a
)
2904 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2905 REF_PRINT_COUNT("SSL_CTX", a
);
2908 REF_ASSERT_ISNT(i
< 0);
2910 X509_VERIFY_PARAM_free(a
->param
);
2911 dane_ctx_final(&a
->dane
);
2914 * Free internal session cache. However: the remove_cb() may reference
2915 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2916 * after the sessions were flushed.
2917 * As the ex_data handling routines might also touch the session cache,
2918 * the most secure solution seems to be: empty (flush) the cache, then
2919 * free ex_data, then finally free the cache.
2920 * (See ticket [openssl.org #212].)
2922 if (a
->sessions
!= NULL
)
2923 SSL_CTX_flush_sessions(a
, 0);
2925 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2926 lh_SSL_SESSION_free(a
->sessions
);
2927 X509_STORE_free(a
->cert_store
);
2928 #ifndef OPENSSL_NO_CT
2929 CTLOG_STORE_free(a
->ctlog_store
);
2931 sk_SSL_CIPHER_free(a
->cipher_list
);
2932 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2933 ssl_cert_free(a
->cert
);
2934 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2935 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2936 a
->comp_methods
= NULL
;
2937 #ifndef OPENSSL_NO_SRTP
2938 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2940 #ifndef OPENSSL_NO_SRP
2941 SSL_CTX_SRP_CTX_free(a
);
2943 #ifndef OPENSSL_NO_ENGINE
2944 ENGINE_finish(a
->client_cert_engine
);
2947 #ifndef OPENSSL_NO_EC
2948 OPENSSL_free(a
->ext
.ecpointformats
);
2949 OPENSSL_free(a
->ext
.supportedgroups
);
2951 OPENSSL_free(a
->ext
.alpn
);
2953 CRYPTO_THREAD_lock_free(a
->lock
);
2958 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2960 ctx
->default_passwd_callback
= cb
;
2963 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2965 ctx
->default_passwd_callback_userdata
= u
;
2968 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2970 return ctx
->default_passwd_callback
;
2973 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2975 return ctx
->default_passwd_callback_userdata
;
2978 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2980 s
->default_passwd_callback
= cb
;
2983 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2985 s
->default_passwd_callback_userdata
= u
;
2988 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2990 return s
->default_passwd_callback
;
2993 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2995 return s
->default_passwd_callback_userdata
;
2998 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2999 int (*cb
) (X509_STORE_CTX
*, void *),
3002 ctx
->app_verify_callback
= cb
;
3003 ctx
->app_verify_arg
= arg
;
3006 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3007 int (*cb
) (int, X509_STORE_CTX
*))
3009 ctx
->verify_mode
= mode
;
3010 ctx
->default_verify_callback
= cb
;
3013 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3015 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3018 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3020 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3023 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3025 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3028 void ssl_set_masks(SSL
*s
)
3031 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3032 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3033 unsigned long mask_k
, mask_a
;
3034 #ifndef OPENSSL_NO_EC
3035 int have_ecc_cert
, ecdsa_ok
;
3040 #ifndef OPENSSL_NO_DH
3041 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3046 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3047 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3048 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3049 #ifndef OPENSSL_NO_EC
3050 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3056 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3057 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3060 #ifndef OPENSSL_NO_GOST
3061 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3062 mask_k
|= SSL_kGOST
;
3063 mask_a
|= SSL_aGOST12
;
3065 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3066 mask_k
|= SSL_kGOST
;
3067 mask_a
|= SSL_aGOST12
;
3069 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3070 mask_k
|= SSL_kGOST
;
3071 mask_a
|= SSL_aGOST01
;
3081 if (rsa_enc
|| rsa_sign
) {
3089 mask_a
|= SSL_aNULL
;
3092 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3093 * depending on the key usage extension.
3095 #ifndef OPENSSL_NO_EC
3096 if (have_ecc_cert
) {
3098 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3099 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3100 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3103 mask_a
|= SSL_aECDSA
;
3105 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3106 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3107 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3108 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3109 mask_a
|= SSL_aECDSA
;
3112 #ifndef OPENSSL_NO_EC
3113 mask_k
|= SSL_kECDHE
;
3116 #ifndef OPENSSL_NO_PSK
3119 if (mask_k
& SSL_kRSA
)
3120 mask_k
|= SSL_kRSAPSK
;
3121 if (mask_k
& SSL_kDHE
)
3122 mask_k
|= SSL_kDHEPSK
;
3123 if (mask_k
& SSL_kECDHE
)
3124 mask_k
|= SSL_kECDHEPSK
;
3127 s
->s3
->tmp
.mask_k
= mask_k
;
3128 s
->s3
->tmp
.mask_a
= mask_a
;
3131 #ifndef OPENSSL_NO_EC
3133 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3135 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3136 /* key usage, if present, must allow signing */
3137 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3138 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3139 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3143 return 1; /* all checks are ok */
3148 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3149 size_t *serverinfo_length
)
3151 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3152 *serverinfo_length
= 0;
3154 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3157 *serverinfo
= cpk
->serverinfo
;
3158 *serverinfo_length
= cpk
->serverinfo_length
;
3162 void ssl_update_cache(SSL
*s
, int mode
)
3167 * If the session_id_length is 0, we are not supposed to cache it, and it
3168 * would be rather hard to do anyway :-)
3170 if (s
->session
->session_id_length
== 0)
3173 i
= s
->session_ctx
->session_cache_mode
;
3175 && (!s
->hit
|| SSL_IS_TLS13(s
))
3176 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3177 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3178 && s
->session_ctx
->new_session_cb
!= NULL
) {
3179 SSL_SESSION_up_ref(s
->session
);
3180 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3181 SSL_SESSION_free(s
->session
);
3184 /* auto flush every 255 connections */
3185 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3186 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3187 ? s
->session_ctx
->stats
.sess_connect_good
3188 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3189 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3194 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3199 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3204 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3208 if (s
->method
!= meth
) {
3209 const SSL_METHOD
*sm
= s
->method
;
3210 int (*hf
) (SSL
*) = s
->handshake_func
;
3212 if (sm
->version
== meth
->version
)
3217 ret
= s
->method
->ssl_new(s
);
3220 if (hf
== sm
->ssl_connect
)
3221 s
->handshake_func
= meth
->ssl_connect
;
3222 else if (hf
== sm
->ssl_accept
)
3223 s
->handshake_func
= meth
->ssl_accept
;
3228 int SSL_get_error(const SSL
*s
, int i
)
3235 return (SSL_ERROR_NONE
);
3238 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3239 * where we do encode the error
3241 if ((l
= ERR_peek_error()) != 0) {
3242 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3243 return (SSL_ERROR_SYSCALL
);
3245 return (SSL_ERROR_SSL
);
3248 if (SSL_want_read(s
)) {
3249 bio
= SSL_get_rbio(s
);
3250 if (BIO_should_read(bio
))
3251 return (SSL_ERROR_WANT_READ
);
3252 else if (BIO_should_write(bio
))
3254 * This one doesn't make too much sense ... We never try to write
3255 * to the rbio, and an application program where rbio and wbio
3256 * are separate couldn't even know what it should wait for.
3257 * However if we ever set s->rwstate incorrectly (so that we have
3258 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3259 * wbio *are* the same, this test works around that bug; so it
3260 * might be safer to keep it.
3262 return (SSL_ERROR_WANT_WRITE
);
3263 else if (BIO_should_io_special(bio
)) {
3264 reason
= BIO_get_retry_reason(bio
);
3265 if (reason
== BIO_RR_CONNECT
)
3266 return (SSL_ERROR_WANT_CONNECT
);
3267 else if (reason
== BIO_RR_ACCEPT
)
3268 return (SSL_ERROR_WANT_ACCEPT
);
3270 return (SSL_ERROR_SYSCALL
); /* unknown */
3274 if (SSL_want_write(s
)) {
3275 /* Access wbio directly - in order to use the buffered bio if present */
3277 if (BIO_should_write(bio
))
3278 return (SSL_ERROR_WANT_WRITE
);
3279 else if (BIO_should_read(bio
))
3281 * See above (SSL_want_read(s) with BIO_should_write(bio))
3283 return (SSL_ERROR_WANT_READ
);
3284 else if (BIO_should_io_special(bio
)) {
3285 reason
= BIO_get_retry_reason(bio
);
3286 if (reason
== BIO_RR_CONNECT
)
3287 return (SSL_ERROR_WANT_CONNECT
);
3288 else if (reason
== BIO_RR_ACCEPT
)
3289 return (SSL_ERROR_WANT_ACCEPT
);
3291 return (SSL_ERROR_SYSCALL
);
3294 if (SSL_want_x509_lookup(s
))
3295 return (SSL_ERROR_WANT_X509_LOOKUP
);
3296 if (SSL_want_async(s
))
3297 return SSL_ERROR_WANT_ASYNC
;
3298 if (SSL_want_async_job(s
))
3299 return SSL_ERROR_WANT_ASYNC_JOB
;
3300 if (SSL_want_early(s
))
3301 return SSL_ERROR_WANT_EARLY
;
3303 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3304 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3305 return (SSL_ERROR_ZERO_RETURN
);
3307 return (SSL_ERROR_SYSCALL
);
3310 static int ssl_do_handshake_intern(void *vargs
)
3312 struct ssl_async_args
*args
;
3315 args
= (struct ssl_async_args
*)vargs
;
3318 return s
->handshake_func(s
);
3321 int SSL_do_handshake(SSL
*s
)
3325 if (s
->handshake_func
== NULL
) {
3326 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3330 ossl_statem_check_finish_init(s
, -1);
3332 s
->method
->ssl_renegotiate_check(s
, 0);
3334 if (SSL_is_server(s
)) {
3335 /* clear SNI settings at server-side */
3336 OPENSSL_free(s
->ext
.hostname
);
3337 s
->ext
.hostname
= NULL
;
3340 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3341 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3342 struct ssl_async_args args
;
3346 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3348 ret
= s
->handshake_func(s
);
3354 void SSL_set_accept_state(SSL
*s
)
3358 ossl_statem_clear(s
);
3359 s
->handshake_func
= s
->method
->ssl_accept
;
3363 void SSL_set_connect_state(SSL
*s
)
3367 ossl_statem_clear(s
);
3368 s
->handshake_func
= s
->method
->ssl_connect
;
3372 int ssl_undefined_function(SSL
*s
)
3374 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3378 int ssl_undefined_void_function(void)
3380 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3381 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3385 int ssl_undefined_const_function(const SSL
*s
)
3390 const SSL_METHOD
*ssl_bad_method(int ver
)
3392 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3396 const char *ssl_protocol_to_string(int version
)
3400 case TLS1_3_VERSION
:
3403 case TLS1_2_VERSION
:
3406 case TLS1_1_VERSION
:
3421 case DTLS1_2_VERSION
:
3429 const char *SSL_get_version(const SSL
*s
)
3431 return ssl_protocol_to_string(s
->version
);
3434 SSL
*SSL_dup(SSL
*s
)
3436 STACK_OF(X509_NAME
) *sk
;
3441 /* If we're not quiescent, just up_ref! */
3442 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3443 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3448 * Otherwise, copy configuration state, and session if set.
3450 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3453 if (s
->session
!= NULL
) {
3455 * Arranges to share the same session via up_ref. This "copies"
3456 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3458 if (!SSL_copy_session_id(ret
, s
))
3462 * No session has been established yet, so we have to expect that
3463 * s->cert or ret->cert will be changed later -- they should not both
3464 * point to the same object, and thus we can't use
3465 * SSL_copy_session_id.
3467 if (!SSL_set_ssl_method(ret
, s
->method
))
3470 if (s
->cert
!= NULL
) {
3471 ssl_cert_free(ret
->cert
);
3472 ret
->cert
= ssl_cert_dup(s
->cert
);
3473 if (ret
->cert
== NULL
)
3477 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3478 (int)s
->sid_ctx_length
))
3482 if (!ssl_dane_dup(ret
, s
))
3484 ret
->version
= s
->version
;
3485 ret
->options
= s
->options
;
3486 ret
->mode
= s
->mode
;
3487 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3488 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3489 ret
->msg_callback
= s
->msg_callback
;
3490 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3491 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3492 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3493 ret
->generate_session_id
= s
->generate_session_id
;
3495 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3497 /* copy app data, a little dangerous perhaps */
3498 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3501 /* setup rbio, and wbio */
3502 if (s
->rbio
!= NULL
) {
3503 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3506 if (s
->wbio
!= NULL
) {
3507 if (s
->wbio
!= s
->rbio
) {
3508 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3511 BIO_up_ref(ret
->rbio
);
3512 ret
->wbio
= ret
->rbio
;
3516 ret
->server
= s
->server
;
3517 if (s
->handshake_func
) {
3519 SSL_set_accept_state(ret
);
3521 SSL_set_connect_state(ret
);
3523 ret
->shutdown
= s
->shutdown
;
3526 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3527 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3529 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3531 /* dup the cipher_list and cipher_list_by_id stacks */
3532 if (s
->cipher_list
!= NULL
) {
3533 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3536 if (s
->cipher_list_by_id
!= NULL
)
3537 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3541 /* Dup the client_CA list */
3542 if (s
->ca_names
!= NULL
) {
3543 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3546 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3547 xn
= sk_X509_NAME_value(sk
, i
);
3548 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3561 void ssl_clear_cipher_ctx(SSL
*s
)
3563 if (s
->enc_read_ctx
!= NULL
) {
3564 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3565 s
->enc_read_ctx
= NULL
;
3567 if (s
->enc_write_ctx
!= NULL
) {
3568 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3569 s
->enc_write_ctx
= NULL
;
3571 #ifndef OPENSSL_NO_COMP
3572 COMP_CTX_free(s
->expand
);
3574 COMP_CTX_free(s
->compress
);
3579 X509
*SSL_get_certificate(const SSL
*s
)
3581 if (s
->cert
!= NULL
)
3582 return (s
->cert
->key
->x509
);
3587 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3589 if (s
->cert
!= NULL
)
3590 return (s
->cert
->key
->privatekey
);
3595 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3597 if (ctx
->cert
!= NULL
)
3598 return ctx
->cert
->key
->x509
;
3603 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3605 if (ctx
->cert
!= NULL
)
3606 return ctx
->cert
->key
->privatekey
;
3611 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3613 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3614 return (s
->session
->cipher
);
3618 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3620 return s
->s3
->tmp
.new_cipher
;
3623 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3625 #ifndef OPENSSL_NO_COMP
3626 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3632 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3634 #ifndef OPENSSL_NO_COMP
3635 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3641 int ssl_init_wbio_buffer(SSL
*s
)
3645 if (s
->bbio
!= NULL
) {
3646 /* Already buffered. */
3650 bbio
= BIO_new(BIO_f_buffer());
3651 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3653 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3657 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3662 int ssl_free_wbio_buffer(SSL
*s
)
3664 /* callers ensure s is never null */
3665 if (s
->bbio
== NULL
)
3668 s
->wbio
= BIO_pop(s
->wbio
);
3669 if (!ossl_assert(s
->wbio
!= NULL
))
3677 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3679 ctx
->quiet_shutdown
= mode
;
3682 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3684 return (ctx
->quiet_shutdown
);
3687 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3689 s
->quiet_shutdown
= mode
;
3692 int SSL_get_quiet_shutdown(const SSL
*s
)
3694 return (s
->quiet_shutdown
);
3697 void SSL_set_shutdown(SSL
*s
, int mode
)
3702 int SSL_get_shutdown(const SSL
*s
)
3707 int SSL_version(const SSL
*s
)
3712 int SSL_client_version(const SSL
*s
)
3714 return s
->client_version
;
3717 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3722 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3725 if (ssl
->ctx
== ctx
)
3728 ctx
= ssl
->session_ctx
;
3729 new_cert
= ssl_cert_dup(ctx
->cert
);
3730 if (new_cert
== NULL
) {
3734 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3735 ssl_cert_free(new_cert
);
3739 ssl_cert_free(ssl
->cert
);
3740 ssl
->cert
= new_cert
;
3743 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3744 * so setter APIs must prevent invalid lengths from entering the system.
3746 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3750 * If the session ID context matches that of the parent SSL_CTX,
3751 * inherit it from the new SSL_CTX as well. If however the context does
3752 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3753 * leave it unchanged.
3755 if ((ssl
->ctx
!= NULL
) &&
3756 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3757 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3758 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3759 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3762 SSL_CTX_up_ref(ctx
);
3763 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3769 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3771 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3774 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3776 X509_LOOKUP
*lookup
;
3778 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3781 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3783 /* Clear any errors if the default directory does not exist */
3789 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3791 X509_LOOKUP
*lookup
;
3793 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3797 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3799 /* Clear any errors if the default file does not exist */
3805 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3808 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3811 void SSL_set_info_callback(SSL
*ssl
,
3812 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3814 ssl
->info_callback
= cb
;
3818 * One compiler (Diab DCC) doesn't like argument names in returned function
3821 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3824 return ssl
->info_callback
;
3827 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3829 ssl
->verify_result
= arg
;
3832 long SSL_get_verify_result(const SSL
*ssl
)
3834 return (ssl
->verify_result
);
3837 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3840 return sizeof(ssl
->s3
->client_random
);
3841 if (outlen
> sizeof(ssl
->s3
->client_random
))
3842 outlen
= sizeof(ssl
->s3
->client_random
);
3843 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3847 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3850 return sizeof(ssl
->s3
->server_random
);
3851 if (outlen
> sizeof(ssl
->s3
->server_random
))
3852 outlen
= sizeof(ssl
->s3
->server_random
);
3853 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3857 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3858 unsigned char *out
, size_t outlen
)
3861 return session
->master_key_length
;
3862 if (outlen
> session
->master_key_length
)
3863 outlen
= session
->master_key_length
;
3864 memcpy(out
, session
->master_key
, outlen
);
3868 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3871 if (len
> sizeof(sess
->master_key
))
3874 memcpy(sess
->master_key
, in
, len
);
3875 sess
->master_key_length
= len
;
3880 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3882 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3885 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3887 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3890 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3892 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3895 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3897 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3900 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3902 return (ctx
->cert_store
);
3905 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3907 X509_STORE_free(ctx
->cert_store
);
3908 ctx
->cert_store
= store
;
3911 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3914 X509_STORE_up_ref(store
);
3915 SSL_CTX_set_cert_store(ctx
, store
);
3918 int SSL_want(const SSL
*s
)
3920 return (s
->rwstate
);
3924 * \brief Set the callback for generating temporary DH keys.
3925 * \param ctx the SSL context.
3926 * \param dh the callback
3929 #ifndef OPENSSL_NO_DH
3930 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3931 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3934 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3937 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3940 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3944 #ifndef OPENSSL_NO_PSK
3945 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3947 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3948 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3951 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3952 if (identity_hint
!= NULL
) {
3953 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3954 if (ctx
->cert
->psk_identity_hint
== NULL
)
3957 ctx
->cert
->psk_identity_hint
= NULL
;
3961 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3966 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3967 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3970 OPENSSL_free(s
->cert
->psk_identity_hint
);
3971 if (identity_hint
!= NULL
) {
3972 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3973 if (s
->cert
->psk_identity_hint
== NULL
)
3976 s
->cert
->psk_identity_hint
= NULL
;
3980 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3982 if (s
== NULL
|| s
->session
== NULL
)
3984 return (s
->session
->psk_identity_hint
);
3987 const char *SSL_get_psk_identity(const SSL
*s
)
3989 if (s
== NULL
|| s
->session
== NULL
)
3991 return (s
->session
->psk_identity
);
3994 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3996 s
->psk_client_callback
= cb
;
3999 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4001 ctx
->psk_client_callback
= cb
;
4004 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4006 s
->psk_server_callback
= cb
;
4009 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4011 ctx
->psk_server_callback
= cb
;
4015 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4017 s
->psk_find_session_cb
= cb
;
4020 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4021 SSL_psk_find_session_cb_func cb
)
4023 ctx
->psk_find_session_cb
= cb
;
4026 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4028 s
->psk_use_session_cb
= cb
;
4031 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4032 SSL_psk_use_session_cb_func cb
)
4034 ctx
->psk_use_session_cb
= cb
;
4037 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4038 void (*cb
) (int write_p
, int version
,
4039 int content_type
, const void *buf
,
4040 size_t len
, SSL
*ssl
, void *arg
))
4042 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4045 void SSL_set_msg_callback(SSL
*ssl
,
4046 void (*cb
) (int write_p
, int version
,
4047 int content_type
, const void *buf
,
4048 size_t len
, SSL
*ssl
, void *arg
))
4050 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4053 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4054 int (*cb
) (SSL
*ssl
,
4058 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4059 (void (*)(void))cb
);
4062 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4063 int (*cb
) (SSL
*ssl
,
4064 int is_forward_secure
))
4066 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4067 (void (*)(void))cb
);
4070 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4071 size_t (*cb
) (SSL
*ssl
, int type
,
4072 size_t len
, void *arg
))
4074 ctx
->record_padding_cb
= cb
;
4077 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4079 ctx
->record_padding_arg
= arg
;
4082 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4084 return ctx
->record_padding_arg
;
4087 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4089 /* block size of 0 or 1 is basically no padding */
4090 if (block_size
== 1)
4091 ctx
->block_padding
= 0;
4092 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4093 ctx
->block_padding
= block_size
;
4099 void SSL_set_record_padding_callback(SSL
*ssl
,
4100 size_t (*cb
) (SSL
*ssl
, int type
,
4101 size_t len
, void *arg
))
4103 ssl
->record_padding_cb
= cb
;
4106 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4108 ssl
->record_padding_arg
= arg
;
4111 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4113 return ssl
->record_padding_arg
;
4116 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4118 /* block size of 0 or 1 is basically no padding */
4119 if (block_size
== 1)
4120 ssl
->block_padding
= 0;
4121 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4122 ssl
->block_padding
= block_size
;
4129 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4130 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4131 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4132 * Returns the newly allocated ctx;
4135 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4137 ssl_clear_hash_ctx(hash
);
4138 *hash
= EVP_MD_CTX_new();
4139 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4140 EVP_MD_CTX_free(*hash
);
4147 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4150 EVP_MD_CTX_free(*hash
);
4154 /* Retrieve handshake hashes */
4155 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4158 EVP_MD_CTX
*ctx
= NULL
;
4159 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4160 int hashleni
= EVP_MD_CTX_size(hdgst
);
4163 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4166 ctx
= EVP_MD_CTX_new();
4170 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4171 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4174 *hashlen
= hashleni
;
4178 EVP_MD_CTX_free(ctx
);
4182 int SSL_session_reused(SSL
*s
)
4187 int SSL_is_server(const SSL
*s
)
4192 #if OPENSSL_API_COMPAT < 0x10100000L
4193 void SSL_set_debug(SSL
*s
, int debug
)
4195 /* Old function was do-nothing anyway... */
4201 void SSL_set_security_level(SSL
*s
, int level
)
4203 s
->cert
->sec_level
= level
;
4206 int SSL_get_security_level(const SSL
*s
)
4208 return s
->cert
->sec_level
;
4211 void SSL_set_security_callback(SSL
*s
,
4212 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4213 int op
, int bits
, int nid
,
4214 void *other
, void *ex
))
4216 s
->cert
->sec_cb
= cb
;
4219 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4220 const SSL_CTX
*ctx
, int op
,
4221 int bits
, int nid
, void *other
,
4223 return s
->cert
->sec_cb
;
4226 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4228 s
->cert
->sec_ex
= ex
;
4231 void *SSL_get0_security_ex_data(const SSL
*s
)
4233 return s
->cert
->sec_ex
;
4236 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4238 ctx
->cert
->sec_level
= level
;
4241 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4243 return ctx
->cert
->sec_level
;
4246 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4247 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4248 int op
, int bits
, int nid
,
4249 void *other
, void *ex
))
4251 ctx
->cert
->sec_cb
= cb
;
4254 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4260 return ctx
->cert
->sec_cb
;
4263 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4265 ctx
->cert
->sec_ex
= ex
;
4268 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4270 return ctx
->cert
->sec_ex
;
4274 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4275 * can return unsigned long, instead of the generic long return value from the
4276 * control interface.
4278 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4280 return ctx
->options
;
4283 unsigned long SSL_get_options(const SSL
*s
)
4288 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4290 return ctx
->options
|= op
;
4293 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4295 return s
->options
|= op
;
4298 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4300 return ctx
->options
&= ~op
;
4303 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4305 return s
->options
&= ~op
;
4308 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4310 return s
->verified_chain
;
4313 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4315 #ifndef OPENSSL_NO_CT
4318 * Moves SCTs from the |src| stack to the |dst| stack.
4319 * The source of each SCT will be set to |origin|.
4320 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4322 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4324 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4325 sct_source_t origin
)
4331 *dst
= sk_SCT_new_null();
4333 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4338 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4339 if (SCT_set_source(sct
, origin
) != 1)
4342 if (sk_SCT_push(*dst
, sct
) <= 0)
4350 sk_SCT_push(src
, sct
); /* Put the SCT back */
4355 * Look for data collected during ServerHello and parse if found.
4356 * Returns the number of SCTs extracted.
4358 static int ct_extract_tls_extension_scts(SSL
*s
)
4360 int scts_extracted
= 0;
4362 if (s
->ext
.scts
!= NULL
) {
4363 const unsigned char *p
= s
->ext
.scts
;
4364 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4366 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4368 SCT_LIST_free(scts
);
4371 return scts_extracted
;
4375 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4376 * contains an SCT X509 extension. They will be stored in |s->scts|.
4378 * - The number of SCTs extracted, assuming an OCSP response exists.
4379 * - 0 if no OCSP response exists or it contains no SCTs.
4380 * - A negative integer if an error occurs.
4382 static int ct_extract_ocsp_response_scts(SSL
*s
)
4384 # ifndef OPENSSL_NO_OCSP
4385 int scts_extracted
= 0;
4386 const unsigned char *p
;
4387 OCSP_BASICRESP
*br
= NULL
;
4388 OCSP_RESPONSE
*rsp
= NULL
;
4389 STACK_OF(SCT
) *scts
= NULL
;
4392 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4395 p
= s
->ext
.ocsp
.resp
;
4396 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4400 br
= OCSP_response_get1_basic(rsp
);
4404 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4405 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4411 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4413 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4414 if (scts_extracted
< 0)
4418 SCT_LIST_free(scts
);
4419 OCSP_BASICRESP_free(br
);
4420 OCSP_RESPONSE_free(rsp
);
4421 return scts_extracted
;
4423 /* Behave as if no OCSP response exists */
4429 * Attempts to extract SCTs from the peer certificate.
4430 * Return the number of SCTs extracted, or a negative integer if an error
4433 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4435 int scts_extracted
= 0;
4436 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4439 STACK_OF(SCT
) *scts
=
4440 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4443 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4445 SCT_LIST_free(scts
);
4448 return scts_extracted
;
4452 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4453 * response (if it exists) and X509v3 extensions in the certificate.
4454 * Returns NULL if an error occurs.
4456 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4458 if (!s
->scts_parsed
) {
4459 if (ct_extract_tls_extension_scts(s
) < 0 ||
4460 ct_extract_ocsp_response_scts(s
) < 0 ||
4461 ct_extract_x509v3_extension_scts(s
) < 0)
4471 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4472 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4477 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4478 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4480 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4483 for (i
= 0; i
< count
; ++i
) {
4484 SCT
*sct
= sk_SCT_value(scts
, i
);
4485 int status
= SCT_get_validation_status(sct
);
4487 if (status
== SCT_VALIDATION_STATUS_VALID
)
4490 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4494 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4498 * Since code exists that uses the custom extension handler for CT, look
4499 * for this and throw an error if they have already registered to use CT.
4501 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4502 TLSEXT_TYPE_signed_certificate_timestamp
))
4504 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4505 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4509 if (callback
!= NULL
) {
4511 * If we are validating CT, then we MUST accept SCTs served via OCSP
4513 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4517 s
->ct_validation_callback
= callback
;
4518 s
->ct_validation_callback_arg
= arg
;
4523 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4524 ssl_ct_validation_cb callback
, void *arg
)
4527 * Since code exists that uses the custom extension handler for CT, look for
4528 * this and throw an error if they have already registered to use CT.
4530 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4531 TLSEXT_TYPE_signed_certificate_timestamp
))
4533 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4534 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4538 ctx
->ct_validation_callback
= callback
;
4539 ctx
->ct_validation_callback_arg
= arg
;
4543 int SSL_ct_is_enabled(const SSL
*s
)
4545 return s
->ct_validation_callback
!= NULL
;
4548 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4550 return ctx
->ct_validation_callback
!= NULL
;
4553 int ssl_validate_ct(SSL
*s
)
4556 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4558 SSL_DANE
*dane
= &s
->dane
;
4559 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4560 const STACK_OF(SCT
) *scts
;
4563 * If no callback is set, the peer is anonymous, or its chain is invalid,
4564 * skip SCT validation - just return success. Applications that continue
4565 * handshakes without certificates, with unverified chains, or pinned leaf
4566 * certificates are outside the scope of the WebPKI and CT.
4568 * The above exclusions notwithstanding the vast majority of peers will
4569 * have rather ordinary certificate chains validated by typical
4570 * applications that perform certificate verification and therefore will
4571 * process SCTs when enabled.
4573 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4574 s
->verify_result
!= X509_V_OK
||
4575 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4579 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4580 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4582 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4583 switch (dane
->mtlsa
->usage
) {
4584 case DANETLS_USAGE_DANE_TA
:
4585 case DANETLS_USAGE_DANE_EE
:
4590 ctx
= CT_POLICY_EVAL_CTX_new();
4592 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4596 issuer
= sk_X509_value(s
->verified_chain
, 1);
4597 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4598 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4599 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4600 CT_POLICY_EVAL_CTX_set_time(
4601 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4603 scts
= SSL_get0_peer_scts(s
);
4606 * This function returns success (> 0) only when all the SCTs are valid, 0
4607 * when some are invalid, and < 0 on various internal errors (out of
4608 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4609 * reason to abort the handshake, that decision is up to the callback.
4610 * Therefore, we error out only in the unexpected case that the return
4611 * value is negative.
4613 * XXX: One might well argue that the return value of this function is an
4614 * unfortunate design choice. Its job is only to determine the validation
4615 * status of each of the provided SCTs. So long as it correctly separates
4616 * the wheat from the chaff it should return success. Failure in this case
4617 * ought to correspond to an inability to carry out its duties.
4619 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4620 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4624 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4626 ret
= 0; /* This function returns 0 on failure */
4629 CT_POLICY_EVAL_CTX_free(ctx
);
4631 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4632 * failure return code here. Also the application may wish the complete
4633 * the handshake, and then disconnect cleanly at a higher layer, after
4634 * checking the verification status of the completed connection.
4636 * We therefore force a certificate verification failure which will be
4637 * visible via SSL_get_verify_result() and cached as part of any resumed
4640 * Note: the permissive callback is for information gathering only, always
4641 * returns success, and does not affect verification status. Only the
4642 * strict callback or a custom application-specified callback can trigger
4643 * connection failure or record a verification error.
4646 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4650 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4652 switch (validation_mode
) {
4654 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4656 case SSL_CT_VALIDATION_PERMISSIVE
:
4657 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4658 case SSL_CT_VALIDATION_STRICT
:
4659 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4663 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4665 switch (validation_mode
) {
4667 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4669 case SSL_CT_VALIDATION_PERMISSIVE
:
4670 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4671 case SSL_CT_VALIDATION_STRICT
:
4672 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4676 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4678 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4681 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4683 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4686 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4688 CTLOG_STORE_free(ctx
->ctlog_store
);
4689 ctx
->ctlog_store
= logs
;
4692 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4694 return ctx
->ctlog_store
;
4697 #endif /* OPENSSL_NO_CT */
4699 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4702 c
->early_cb_arg
= arg
;
4705 int SSL_early_isv2(SSL
*s
)
4707 if (s
->clienthello
== NULL
)
4709 return s
->clienthello
->isv2
;
4712 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4714 if (s
->clienthello
== NULL
)
4716 return s
->clienthello
->legacy_version
;
4719 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4721 if (s
->clienthello
== NULL
)
4724 *out
= s
->clienthello
->random
;
4725 return SSL3_RANDOM_SIZE
;
4728 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4730 if (s
->clienthello
== NULL
)
4733 *out
= s
->clienthello
->session_id
;
4734 return s
->clienthello
->session_id_len
;
4737 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4739 if (s
->clienthello
== NULL
)
4742 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4743 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4746 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4748 if (s
->clienthello
== NULL
)
4751 *out
= s
->clienthello
->compressions
;
4752 return s
->clienthello
->compressions_len
;
4755 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4761 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4763 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4764 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4768 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4769 if (present
== NULL
)
4771 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4772 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4774 if (ext
->received_order
>= num
)
4776 present
[ext
->received_order
] = ext
->type
;
4783 OPENSSL_free(present
);
4787 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4793 if (s
->clienthello
== NULL
)
4795 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4796 r
= s
->clienthello
->pre_proc_exts
+ i
;
4797 if (r
->present
&& r
->type
== type
) {
4799 *out
= PACKET_data(&r
->data
);
4801 *outlen
= PACKET_remaining(&r
->data
);
4808 int SSL_free_buffers(SSL
*ssl
)
4810 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4812 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4815 RECORD_LAYER_release(rl
);
4819 int SSL_alloc_buffers(SSL
*ssl
)
4821 return ssl3_setup_buffers(ssl
);
4824 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4826 ctx
->keylog_callback
= cb
;
4829 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4831 return ctx
->keylog_callback
;
4834 static int nss_keylog_int(const char *prefix
,
4836 const uint8_t *parameter_1
,
4837 size_t parameter_1_len
,
4838 const uint8_t *parameter_2
,
4839 size_t parameter_2_len
)
4842 char *cursor
= NULL
;
4847 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4850 * Our output buffer will contain the following strings, rendered with
4851 * space characters in between, terminated by a NULL character: first the
4852 * prefix, then the first parameter, then the second parameter. The
4853 * meaning of each parameter depends on the specific key material being
4854 * logged. Note that the first and second parameters are encoded in
4855 * hexadecimal, so we need a buffer that is twice their lengths.
4857 prefix_len
= strlen(prefix
);
4858 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4859 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4860 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4864 strcpy(cursor
, prefix
);
4865 cursor
+= prefix_len
;
4868 for (i
= 0; i
< parameter_1_len
; i
++) {
4869 sprintf(cursor
, "%02x", parameter_1
[i
]);
4874 for (i
= 0; i
< parameter_2_len
; i
++) {
4875 sprintf(cursor
, "%02x", parameter_2
[i
]);
4880 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4886 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4887 const uint8_t *encrypted_premaster
,
4888 size_t encrypted_premaster_len
,
4889 const uint8_t *premaster
,
4890 size_t premaster_len
)
4892 if (encrypted_premaster_len
< 8) {
4893 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4897 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4898 return nss_keylog_int("RSA",
4900 encrypted_premaster
,
4906 int ssl_log_secret(SSL
*ssl
,
4908 const uint8_t *secret
,
4911 return nss_keylog_int(label
,
4913 ssl
->s3
->client_random
,
4919 #define SSLV2_CIPHER_LEN 3
4921 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4926 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4928 if (PACKET_remaining(cipher_suites
) == 0) {
4929 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4930 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4934 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4935 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4936 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4937 *al
= SSL_AD_DECODE_ERROR
;
4941 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4942 s
->s3
->tmp
.ciphers_raw
= NULL
;
4943 s
->s3
->tmp
.ciphers_rawlen
= 0;
4946 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4947 PACKET sslv2ciphers
= *cipher_suites
;
4948 unsigned int leadbyte
;
4952 * We store the raw ciphers list in SSLv3+ format so we need to do some
4953 * preprocessing to convert the list first. If there are any SSLv2 only
4954 * ciphersuites with a non-zero leading byte then we are going to
4955 * slightly over allocate because we won't store those. But that isn't a
4958 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4959 s
->s3
->tmp
.ciphers_raw
= raw
;
4961 *al
= SSL_AD_INTERNAL_ERROR
;
4964 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4965 PACKET_remaining(&sslv2ciphers
) > 0;
4966 raw
+= TLS_CIPHER_LEN
) {
4967 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4969 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4972 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4973 *al
= SSL_AD_DECODE_ERROR
;
4974 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4975 s
->s3
->tmp
.ciphers_raw
= NULL
;
4976 s
->s3
->tmp
.ciphers_rawlen
= 0;
4980 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4982 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4983 &s
->s3
->tmp
.ciphers_rawlen
)) {
4984 *al
= SSL_AD_INTERNAL_ERROR
;
4992 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4993 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4994 STACK_OF(SSL_CIPHER
) **scsvs
)
4999 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5001 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5004 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5005 STACK_OF(SSL_CIPHER
) **skp
,
5006 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5007 int sslv2format
, int *al
)
5009 const SSL_CIPHER
*c
;
5010 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5011 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5013 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5014 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5016 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5018 if (PACKET_remaining(cipher_suites
) == 0) {
5019 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5020 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5024 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5025 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5026 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5027 *al
= SSL_AD_DECODE_ERROR
;
5031 sk
= sk_SSL_CIPHER_new_null();
5032 scsvs
= sk_SSL_CIPHER_new_null();
5033 if (sk
== NULL
|| scsvs
== NULL
) {
5034 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5035 *al
= SSL_AD_INTERNAL_ERROR
;
5039 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5041 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5042 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5043 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5045 if (sslv2format
&& cipher
[0] != '\0')
5048 /* For SSLv2-compat, ignore leading 0-byte. */
5049 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5051 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5052 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5053 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5054 *al
= SSL_AD_INTERNAL_ERROR
;
5059 if (PACKET_remaining(cipher_suites
) > 0) {
5060 *al
= SSL_AD_DECODE_ERROR
;
5061 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5068 sk_SSL_CIPHER_free(sk
);
5069 if (scsvs_out
!= NULL
)
5072 sk_SSL_CIPHER_free(scsvs
);
5075 sk_SSL_CIPHER_free(sk
);
5076 sk_SSL_CIPHER_free(scsvs
);
5080 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5082 ctx
->max_early_data
= max_early_data
;
5087 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5089 return ctx
->max_early_data
;
5092 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5094 s
->max_early_data
= max_early_data
;
5099 uint32_t SSL_get_max_early_data(const SSL
*s
)
5101 return s
->max_early_data
;
5104 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5106 if (s
->drbg
!= NULL
)
5107 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5108 return RAND_bytes(rnd
, (int)size
);