2 * Copyright 1995-2016 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>
24 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
26 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
28 * evil casts, but these functions are only called if there's a library
31 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
32 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
33 ssl_undefined_function
,
34 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
35 ssl_undefined_function
,
36 (int (*)(SSL
*, int))ssl_undefined_function
,
37 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
38 ssl_undefined_function
,
39 NULL
, /* client_finished_label */
40 0, /* client_finished_label_len */
41 NULL
, /* server_finished_label */
42 0, /* server_finished_label_len */
43 (int (*)(int))ssl_undefined_function
,
44 (int (*)(SSL
*, unsigned char *, size_t, const char *,
45 size_t, const unsigned char *, size_t,
46 int use_context
))ssl_undefined_function
,
49 struct ssl_async_args
{
53 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
55 int (*func_read
) (SSL
*, void *, size_t, size_t *);
56 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
57 int (*func_other
) (SSL
*);
67 DANETLS_MATCHING_FULL
, 0, NID_undef
70 DANETLS_MATCHING_2256
, 1, NID_sha256
73 DANETLS_MATCHING_2512
, 2, NID_sha512
77 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
81 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
82 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
85 if (dctx
->mdevp
!= NULL
)
88 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
89 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
91 if (mdord
== NULL
|| mdevp
== NULL
) {
94 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
98 /* Install default entries */
99 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
102 if (dane_mds
[i
].nid
== NID_undef
||
103 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
105 mdevp
[dane_mds
[i
].mtype
] = md
;
106 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
116 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
118 OPENSSL_free(dctx
->mdevp
);
121 OPENSSL_free(dctx
->mdord
);
126 static void tlsa_free(danetls_record
*t
)
130 OPENSSL_free(t
->data
);
131 EVP_PKEY_free(t
->spki
);
135 static void dane_final(SSL_DANE
*dane
)
137 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
140 sk_X509_pop_free(dane
->certs
, X509_free
);
143 X509_free(dane
->mcert
);
151 * dane_copy - Copy dane configuration, sans verification state.
153 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
158 if (!DANETLS_ENABLED(&from
->dane
))
161 dane_final(&to
->dane
);
162 to
->dane
.flags
= from
->dane
.flags
;
163 to
->dane
.dctx
= &to
->ctx
->dane
;
164 to
->dane
.trecs
= sk_danetls_record_new_null();
166 if (to
->dane
.trecs
== NULL
) {
167 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
171 num
= sk_danetls_record_num(from
->dane
.trecs
);
172 for (i
= 0; i
< num
; ++i
) {
173 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
175 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
176 t
->data
, t
->dlen
) <= 0)
182 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
183 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
187 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
188 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
192 if (mtype
> dctx
->mdmax
) {
193 const EVP_MD
**mdevp
;
195 int n
= ((int)mtype
) + 1;
197 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
199 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
204 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
206 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
211 /* Zero-fill any gaps */
212 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
220 dctx
->mdevp
[mtype
] = md
;
221 /* Coerce ordinal of disabled matching types to 0 */
222 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
227 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
229 if (mtype
> dane
->dctx
->mdmax
)
231 return dane
->dctx
->mdevp
[mtype
];
234 static int dane_tlsa_add(SSL_DANE
*dane
,
237 uint8_t mtype
, unsigned char *data
, size_t dlen
)
240 const EVP_MD
*md
= NULL
;
241 int ilen
= (int)dlen
;
245 if (dane
->trecs
== NULL
) {
246 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
250 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
251 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
255 if (usage
> DANETLS_USAGE_LAST
) {
256 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
260 if (selector
> DANETLS_SELECTOR_LAST
) {
261 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
265 if (mtype
!= DANETLS_MATCHING_FULL
) {
266 md
= tlsa_md_get(dane
, mtype
);
268 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
273 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
274 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
278 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
282 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
283 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
288 t
->selector
= selector
;
290 t
->data
= OPENSSL_malloc(dlen
);
291 if (t
->data
== NULL
) {
293 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
296 memcpy(t
->data
, data
, dlen
);
299 /* Validate and cache full certificate or public key */
300 if (mtype
== DANETLS_MATCHING_FULL
) {
301 const unsigned char *p
= data
;
303 EVP_PKEY
*pkey
= NULL
;
306 case DANETLS_SELECTOR_CERT
:
307 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
308 dlen
!= (size_t)(p
- data
)) {
310 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
313 if (X509_get0_pubkey(cert
) == NULL
) {
315 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
319 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
325 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
326 * records that contain full certificates of trust-anchors that are
327 * not present in the wire chain. For usage PKIX-TA(0), we augment
328 * the chain with untrusted Full(0) certificates from DNS, in case
329 * they are missing from the chain.
331 if ((dane
->certs
== NULL
&&
332 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
333 !sk_X509_push(dane
->certs
, cert
)) {
334 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
341 case DANETLS_SELECTOR_SPKI
:
342 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
343 dlen
!= (size_t)(p
- data
)) {
345 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
350 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
351 * records that contain full bare keys of trust-anchors that are
352 * not present in the wire chain.
354 if (usage
== DANETLS_USAGE_DANE_TA
)
363 * Find the right insertion point for the new record.
365 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
366 * they can be processed first, as they require no chain building, and no
367 * expiration or hostname checks. Because DANE-EE(3) is numerically
368 * largest, this is accomplished via descending sort by "usage".
370 * We also sort in descending order by matching ordinal to simplify
371 * the implementation of digest agility in the verification code.
373 * The choice of order for the selector is not significant, so we
374 * use the same descending order for consistency.
376 num
= sk_danetls_record_num(dane
->trecs
);
377 for (i
= 0; i
< num
; ++i
) {
378 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
380 if (rec
->usage
> usage
)
382 if (rec
->usage
< usage
)
384 if (rec
->selector
> selector
)
386 if (rec
->selector
< selector
)
388 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
393 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
395 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
398 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
404 * Return 0 if there is only one version configured and it was disabled
405 * at configure time. Return 1 otherwise.
407 static int ssl_check_allowed_versions(int min_version
, int max_version
)
409 int minisdtls
= 0, maxisdtls
= 0;
411 /* Figure out if we're doing DTLS versions or TLS versions */
412 if (min_version
== DTLS1_BAD_VER
413 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
415 if (max_version
== DTLS1_BAD_VER
416 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
418 /* A wildcard version of 0 could be DTLS or TLS. */
419 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
420 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
421 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
425 if (minisdtls
|| maxisdtls
) {
426 /* Do DTLS version checks. */
427 if (min_version
== 0)
428 /* Ignore DTLS1_BAD_VER */
429 min_version
= DTLS1_VERSION
;
430 if (max_version
== 0)
431 max_version
= DTLS1_2_VERSION
;
432 #ifdef OPENSSL_NO_DTLS1_2
433 if (max_version
== DTLS1_2_VERSION
)
434 max_version
= DTLS1_VERSION
;
436 #ifdef OPENSSL_NO_DTLS1
437 if (min_version
== DTLS1_VERSION
)
438 min_version
= DTLS1_2_VERSION
;
440 /* Done massaging versions; do the check. */
442 #ifdef OPENSSL_NO_DTLS1
443 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
444 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
446 #ifdef OPENSSL_NO_DTLS1_2
447 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
448 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
453 /* Regular TLS version checks. */
454 if (min_version
== 0)
455 min_version
= SSL3_VERSION
;
456 if (max_version
== 0)
457 max_version
= TLS1_3_VERSION
;
458 #ifdef OPENSSL_NO_TLS1_3
459 if (max_version
== TLS1_3_VERSION
)
460 max_version
= TLS1_2_VERSION
;
462 #ifdef OPENSSL_NO_TLS1_2
463 if (max_version
== TLS1_2_VERSION
)
464 max_version
= TLS1_1_VERSION
;
466 #ifdef OPENSSL_NO_TLS1_1
467 if (max_version
== TLS1_1_VERSION
)
468 max_version
= TLS1_VERSION
;
470 #ifdef OPENSSL_NO_TLS1
471 if (max_version
== TLS1_VERSION
)
472 max_version
= SSL3_VERSION
;
474 #ifdef OPENSSL_NO_SSL3
475 if (min_version
== SSL3_VERSION
)
476 min_version
= TLS1_VERSION
;
478 #ifdef OPENSSL_NO_TLS1
479 if (min_version
== TLS1_VERSION
)
480 min_version
= TLS1_1_VERSION
;
482 #ifdef OPENSSL_NO_TLS1_1
483 if (min_version
== TLS1_1_VERSION
)
484 min_version
= TLS1_2_VERSION
;
486 #ifdef OPENSSL_NO_TLS1_2
487 if (min_version
== TLS1_2_VERSION
)
488 min_version
= TLS1_3_VERSION
;
490 /* Done massaging versions; do the check. */
492 #ifdef OPENSSL_NO_SSL3
493 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
495 #ifdef OPENSSL_NO_TLS1
496 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
498 #ifdef OPENSSL_NO_TLS1_1
499 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
501 #ifdef OPENSSL_NO_TLS1_2
502 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
504 #ifdef OPENSSL_NO_TLS1_3
505 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
513 static void clear_ciphers(SSL
*s
)
515 /* clear the current cipher */
516 ssl_clear_cipher_ctx(s
);
517 ssl_clear_hash_ctx(&s
->read_hash
);
518 ssl_clear_hash_ctx(&s
->write_hash
);
521 int SSL_clear(SSL
*s
)
523 if (s
->method
== NULL
) {
524 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
528 if (ssl_clear_bad_session(s
)) {
529 SSL_SESSION_free(s
->session
);
532 SSL_SESSION_free(s
->psksession
);
533 s
->psksession
= NULL
;
539 if (s
->renegotiate
) {
540 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
544 ossl_statem_clear(s
);
546 s
->version
= s
->method
->version
;
547 s
->client_version
= s
->version
;
548 s
->rwstate
= SSL_NOTHING
;
550 BUF_MEM_free(s
->init_buf
);
555 s
->key_update
= SSL_KEY_UPDATE_NONE
;
557 /* Reset DANE verification result state */
560 X509_free(s
->dane
.mcert
);
561 s
->dane
.mcert
= NULL
;
562 s
->dane
.mtlsa
= NULL
;
564 /* Clear the verification result peername */
565 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
568 * Check to see if we were changed into a different method, if so, revert
569 * back. We always do this in TLSv1.3. Below that we only do it if we are
570 * not doing session-id reuse.
572 if (s
->method
!= s
->ctx
->method
574 || (!ossl_statem_get_in_handshake(s
) && s
->session
== NULL
))) {
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();
624 if (s
->lock
== NULL
) {
625 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
630 RECORD_LAYER_init(&s
->rlayer
, s
);
632 s
->options
= ctx
->options
;
633 s
->dane
.flags
= ctx
->dane
.flags
;
634 s
->min_proto_version
= ctx
->min_proto_version
;
635 s
->max_proto_version
= ctx
->max_proto_version
;
637 s
->max_cert_list
= ctx
->max_cert_list
;
639 s
->max_early_data
= ctx
->max_early_data
;
642 * Earlier library versions used to copy the pointer to the CERT, not
643 * its contents; only when setting new parameters for the per-SSL
644 * copy, ssl_cert_new would be called (and the direct reference to
645 * the per-SSL_CTX settings would be lost, but those still were
646 * indirectly accessed for various purposes, and for that reason they
647 * used to be known as s->ctx->default_cert). Now we don't look at the
648 * SSL_CTX's CERT after having duplicated it once.
650 s
->cert
= ssl_cert_dup(ctx
->cert
);
654 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
655 s
->msg_callback
= ctx
->msg_callback
;
656 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
657 s
->verify_mode
= ctx
->verify_mode
;
658 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
659 s
->record_padding_cb
= ctx
->record_padding_cb
;
660 s
->record_padding_arg
= ctx
->record_padding_arg
;
661 s
->block_padding
= ctx
->block_padding
;
662 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
663 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
665 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
666 s
->verify_callback
= ctx
->default_verify_callback
;
667 s
->generate_session_id
= ctx
->generate_session_id
;
669 s
->param
= X509_VERIFY_PARAM_new();
670 if (s
->param
== NULL
)
672 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
673 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
674 s
->max_send_fragment
= ctx
->max_send_fragment
;
675 s
->split_send_fragment
= ctx
->split_send_fragment
;
676 s
->max_pipelines
= ctx
->max_pipelines
;
677 if (s
->max_pipelines
> 1)
678 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
679 if (ctx
->default_read_buf_len
> 0)
680 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
685 s
->ext
.debug_arg
= NULL
;
686 s
->ext
.ticket_expected
= 0;
687 s
->ext
.status_type
= ctx
->ext
.status_type
;
688 s
->ext
.status_expected
= 0;
689 s
->ext
.ocsp
.ids
= NULL
;
690 s
->ext
.ocsp
.exts
= NULL
;
691 s
->ext
.ocsp
.resp
= NULL
;
692 s
->ext
.ocsp
.resp_len
= 0;
694 s
->session_ctx
= ctx
;
695 #ifndef OPENSSL_NO_EC
696 if (ctx
->ext
.ecpointformats
) {
697 s
->ext
.ecpointformats
=
698 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
699 ctx
->ext
.ecpointformats_len
);
700 if (!s
->ext
.ecpointformats
)
702 s
->ext
.ecpointformats_len
=
703 ctx
->ext
.ecpointformats_len
;
705 if (ctx
->ext
.supportedgroups
) {
706 s
->ext
.supportedgroups
=
707 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
708 ctx
->ext
.supportedgroups_len
);
709 if (!s
->ext
.supportedgroups
)
711 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
714 #ifndef OPENSSL_NO_NEXTPROTONEG
718 if (s
->ctx
->ext
.alpn
) {
719 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
720 if (s
->ext
.alpn
== NULL
)
722 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
723 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
726 s
->verified_chain
= NULL
;
727 s
->verify_result
= X509_V_OK
;
729 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
730 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
732 s
->method
= ctx
->method
;
734 s
->key_update
= SSL_KEY_UPDATE_NONE
;
736 if (!s
->method
->ssl_new(s
))
739 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
744 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
747 #ifndef OPENSSL_NO_PSK
748 s
->psk_client_callback
= ctx
->psk_client_callback
;
749 s
->psk_server_callback
= ctx
->psk_server_callback
;
751 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
752 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
756 #ifndef OPENSSL_NO_CT
757 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
758 ctx
->ct_validation_callback_arg
))
765 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
769 int SSL_is_dtls(const SSL
*s
)
771 return SSL_IS_DTLS(s
) ? 1 : 0;
774 int SSL_up_ref(SSL
*s
)
778 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
781 REF_PRINT_COUNT("SSL", s
);
782 REF_ASSERT_ISNT(i
< 2);
783 return ((i
> 1) ? 1 : 0);
786 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
787 unsigned int sid_ctx_len
)
789 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
790 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
791 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
794 ctx
->sid_ctx_length
= sid_ctx_len
;
795 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
800 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
801 unsigned int sid_ctx_len
)
803 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
804 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
805 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
808 ssl
->sid_ctx_length
= sid_ctx_len
;
809 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
814 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
816 CRYPTO_THREAD_write_lock(ctx
->lock
);
817 ctx
->generate_session_id
= cb
;
818 CRYPTO_THREAD_unlock(ctx
->lock
);
822 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
824 CRYPTO_THREAD_write_lock(ssl
->lock
);
825 ssl
->generate_session_id
= cb
;
826 CRYPTO_THREAD_unlock(ssl
->lock
);
830 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
834 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
835 * we can "construct" a session to give us the desired check - i.e. to
836 * find if there's a session in the hash table that would conflict with
837 * any new session built out of this id/id_len and the ssl_version in use
842 if (id_len
> sizeof r
.session_id
)
845 r
.ssl_version
= ssl
->version
;
846 r
.session_id_length
= id_len
;
847 memcpy(r
.session_id
, id
, id_len
);
849 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
850 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
851 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
855 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
857 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
860 int SSL_set_purpose(SSL
*s
, int purpose
)
862 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
865 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
867 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
870 int SSL_set_trust(SSL
*s
, int trust
)
872 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
875 int SSL_set1_host(SSL
*s
, const char *hostname
)
877 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
880 int SSL_add1_host(SSL
*s
, const char *hostname
)
882 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
885 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
887 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
890 const char *SSL_get0_peername(SSL
*s
)
892 return X509_VERIFY_PARAM_get0_peername(s
->param
);
895 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
897 return dane_ctx_enable(&ctx
->dane
);
900 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
902 unsigned long orig
= ctx
->dane
.flags
;
904 ctx
->dane
.flags
|= flags
;
908 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
910 unsigned long orig
= ctx
->dane
.flags
;
912 ctx
->dane
.flags
&= ~flags
;
916 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
918 SSL_DANE
*dane
= &s
->dane
;
920 if (s
->ctx
->dane
.mdmax
== 0) {
921 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
924 if (dane
->trecs
!= NULL
) {
925 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
930 * Default SNI name. This rejects empty names, while set1_host below
931 * accepts them and disables host name checks. To avoid side-effects with
932 * invalid input, set the SNI name first.
934 if (s
->ext
.hostname
== NULL
) {
935 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
936 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
941 /* Primary RFC6125 reference identifier */
942 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
943 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
949 dane
->dctx
= &s
->ctx
->dane
;
950 dane
->trecs
= sk_danetls_record_new_null();
952 if (dane
->trecs
== NULL
) {
953 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
959 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
961 unsigned long orig
= ssl
->dane
.flags
;
963 ssl
->dane
.flags
|= flags
;
967 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
969 unsigned long orig
= ssl
->dane
.flags
;
971 ssl
->dane
.flags
&= ~flags
;
975 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
977 SSL_DANE
*dane
= &s
->dane
;
979 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
983 *mcert
= dane
->mcert
;
985 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
990 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
991 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
993 SSL_DANE
*dane
= &s
->dane
;
995 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
999 *usage
= dane
->mtlsa
->usage
;
1001 *selector
= dane
->mtlsa
->selector
;
1003 *mtype
= dane
->mtlsa
->mtype
;
1005 *data
= dane
->mtlsa
->data
;
1007 *dlen
= dane
->mtlsa
->dlen
;
1012 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1017 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1018 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1020 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1023 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1026 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1029 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1031 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1034 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1036 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1039 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1044 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1049 void SSL_certs_clear(SSL
*s
)
1051 ssl_cert_clear_certs(s
->cert
);
1054 void SSL_free(SSL
*s
)
1061 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1062 REF_PRINT_COUNT("SSL", s
);
1065 REF_ASSERT_ISNT(i
< 0);
1067 X509_VERIFY_PARAM_free(s
->param
);
1068 dane_final(&s
->dane
);
1069 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1071 /* Ignore return value */
1072 ssl_free_wbio_buffer(s
);
1074 BIO_free_all(s
->wbio
);
1075 BIO_free_all(s
->rbio
);
1077 BUF_MEM_free(s
->init_buf
);
1079 /* add extra stuff */
1080 sk_SSL_CIPHER_free(s
->cipher_list
);
1081 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1083 /* Make the next call work :-) */
1084 if (s
->session
!= NULL
) {
1085 ssl_clear_bad_session(s
);
1086 SSL_SESSION_free(s
->session
);
1088 SSL_SESSION_free(s
->psksession
);
1092 ssl_cert_free(s
->cert
);
1093 /* Free up if allocated */
1095 OPENSSL_free(s
->ext
.hostname
);
1096 SSL_CTX_free(s
->session_ctx
);
1097 #ifndef OPENSSL_NO_EC
1098 OPENSSL_free(s
->ext
.ecpointformats
);
1099 OPENSSL_free(s
->ext
.supportedgroups
);
1100 #endif /* OPENSSL_NO_EC */
1101 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1102 #ifndef OPENSSL_NO_OCSP
1103 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1105 #ifndef OPENSSL_NO_CT
1106 SCT_LIST_free(s
->scts
);
1107 OPENSSL_free(s
->ext
.scts
);
1109 OPENSSL_free(s
->ext
.ocsp
.resp
);
1110 OPENSSL_free(s
->ext
.alpn
);
1111 OPENSSL_free(s
->ext
.tls13_cookie
);
1112 OPENSSL_free(s
->clienthello
);
1114 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1116 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1118 if (s
->method
!= NULL
)
1119 s
->method
->ssl_free(s
);
1121 RECORD_LAYER_release(&s
->rlayer
);
1123 SSL_CTX_free(s
->ctx
);
1125 ASYNC_WAIT_CTX_free(s
->waitctx
);
1127 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1128 OPENSSL_free(s
->ext
.npn
);
1131 #ifndef OPENSSL_NO_SRTP
1132 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1135 CRYPTO_THREAD_lock_free(s
->lock
);
1140 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1142 BIO_free_all(s
->rbio
);
1146 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1149 * If the output buffering BIO is still in place, remove it
1151 if (s
->bbio
!= NULL
)
1152 s
->wbio
= BIO_pop(s
->wbio
);
1154 BIO_free_all(s
->wbio
);
1157 /* Re-attach |bbio| to the new |wbio|. */
1158 if (s
->bbio
!= NULL
)
1159 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1162 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1165 * For historical reasons, this function has many different cases in
1166 * ownership handling.
1169 /* If nothing has changed, do nothing */
1170 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1174 * If the two arguments are equal then one fewer reference is granted by the
1175 * caller than we want to take
1177 if (rbio
!= NULL
&& rbio
== wbio
)
1181 * If only the wbio is changed only adopt one reference.
1183 if (rbio
== SSL_get_rbio(s
)) {
1184 SSL_set0_wbio(s
, wbio
);
1188 * There is an asymmetry here for historical reasons. If only the rbio is
1189 * changed AND the rbio and wbio were originally different, then we only
1190 * adopt one reference.
1192 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1193 SSL_set0_rbio(s
, rbio
);
1197 /* Otherwise, adopt both references. */
1198 SSL_set0_rbio(s
, rbio
);
1199 SSL_set0_wbio(s
, wbio
);
1202 BIO
*SSL_get_rbio(const SSL
*s
)
1207 BIO
*SSL_get_wbio(const SSL
*s
)
1209 if (s
->bbio
!= NULL
) {
1211 * If |bbio| is active, the true caller-configured BIO is its
1214 return BIO_next(s
->bbio
);
1219 int SSL_get_fd(const SSL
*s
)
1221 return SSL_get_rfd(s
);
1224 int SSL_get_rfd(const SSL
*s
)
1229 b
= SSL_get_rbio(s
);
1230 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1232 BIO_get_fd(r
, &ret
);
1236 int SSL_get_wfd(const SSL
*s
)
1241 b
= SSL_get_wbio(s
);
1242 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1244 BIO_get_fd(r
, &ret
);
1248 #ifndef OPENSSL_NO_SOCK
1249 int SSL_set_fd(SSL
*s
, int fd
)
1254 bio
= BIO_new(BIO_s_socket());
1257 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1260 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1261 SSL_set_bio(s
, bio
, bio
);
1267 int SSL_set_wfd(SSL
*s
, int fd
)
1269 BIO
*rbio
= SSL_get_rbio(s
);
1271 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1272 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1273 BIO
*bio
= BIO_new(BIO_s_socket());
1276 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1279 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1280 SSL_set0_wbio(s
, bio
);
1283 SSL_set0_wbio(s
, rbio
);
1288 int SSL_set_rfd(SSL
*s
, int fd
)
1290 BIO
*wbio
= SSL_get_wbio(s
);
1292 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1293 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1294 BIO
*bio
= BIO_new(BIO_s_socket());
1297 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1300 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1301 SSL_set0_rbio(s
, bio
);
1304 SSL_set0_rbio(s
, wbio
);
1311 /* return length of latest Finished message we sent, copy to 'buf' */
1312 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1316 if (s
->s3
!= NULL
) {
1317 ret
= s
->s3
->tmp
.finish_md_len
;
1320 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1325 /* return length of latest Finished message we expected, copy to 'buf' */
1326 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1330 if (s
->s3
!= NULL
) {
1331 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1334 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1339 int SSL_get_verify_mode(const SSL
*s
)
1341 return (s
->verify_mode
);
1344 int SSL_get_verify_depth(const SSL
*s
)
1346 return X509_VERIFY_PARAM_get_depth(s
->param
);
1349 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1350 return (s
->verify_callback
);
1353 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1355 return (ctx
->verify_mode
);
1358 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1360 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1363 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1364 return (ctx
->default_verify_callback
);
1367 void SSL_set_verify(SSL
*s
, int mode
,
1368 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1370 s
->verify_mode
= mode
;
1371 if (callback
!= NULL
)
1372 s
->verify_callback
= callback
;
1375 void SSL_set_verify_depth(SSL
*s
, int depth
)
1377 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1380 void SSL_set_read_ahead(SSL
*s
, int yes
)
1382 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1385 int SSL_get_read_ahead(const SSL
*s
)
1387 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1390 int SSL_pending(const SSL
*s
)
1392 size_t pending
= s
->method
->ssl_pending(s
);
1395 * SSL_pending cannot work properly if read-ahead is enabled
1396 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1397 * impossible to fix since SSL_pending cannot report errors that may be
1398 * observed while scanning the new data. (Note that SSL_pending() is
1399 * often used as a boolean value, so we'd better not return -1.)
1401 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1402 * we just return INT_MAX.
1404 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1407 int SSL_has_pending(const SSL
*s
)
1410 * Similar to SSL_pending() but returns a 1 to indicate that we have
1411 * unprocessed data available or 0 otherwise (as opposed to the number of
1412 * bytes available). Unlike SSL_pending() this will take into account
1413 * read_ahead data. A 1 return simply indicates that we have unprocessed
1414 * data. That data may not result in any application data, or we may fail
1415 * to parse the records for some reason.
1417 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1420 return RECORD_LAYER_read_pending(&s
->rlayer
);
1423 X509
*SSL_get_peer_certificate(const SSL
*s
)
1427 if ((s
== NULL
) || (s
->session
== NULL
))
1430 r
= s
->session
->peer
;
1440 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1444 if ((s
== NULL
) || (s
->session
== NULL
))
1447 r
= s
->session
->peer_chain
;
1450 * If we are a client, cert_chain includes the peer's own certificate; if
1451 * we are a server, it does not.
1458 * Now in theory, since the calling process own 't' it should be safe to
1459 * modify. We need to be able to read f without being hassled
1461 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1464 /* Do we need to to SSL locking? */
1465 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1470 * what if we are setup for one protocol version but want to talk another
1472 if (t
->method
!= f
->method
) {
1473 t
->method
->ssl_free(t
);
1474 t
->method
= f
->method
;
1475 if (t
->method
->ssl_new(t
) == 0)
1479 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1480 ssl_cert_free(t
->cert
);
1482 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1489 /* Fix this so it checks all the valid key/cert options */
1490 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1492 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1493 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1496 if (ctx
->cert
->key
->privatekey
== NULL
) {
1497 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1500 return (X509_check_private_key
1501 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1504 /* Fix this function so that it takes an optional type parameter */
1505 int SSL_check_private_key(const SSL
*ssl
)
1508 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1511 if (ssl
->cert
->key
->x509
== NULL
) {
1512 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1515 if (ssl
->cert
->key
->privatekey
== NULL
) {
1516 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1519 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1520 ssl
->cert
->key
->privatekey
));
1523 int SSL_waiting_for_async(SSL
*s
)
1531 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1533 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1537 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1540 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1541 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1543 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1547 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1551 int SSL_accept(SSL
*s
)
1553 if (s
->handshake_func
== NULL
) {
1554 /* Not properly initialized yet */
1555 SSL_set_accept_state(s
);
1558 return SSL_do_handshake(s
);
1561 int SSL_connect(SSL
*s
)
1563 if (s
->handshake_func
== NULL
) {
1564 /* Not properly initialized yet */
1565 SSL_set_connect_state(s
);
1568 return SSL_do_handshake(s
);
1571 long SSL_get_default_timeout(const SSL
*s
)
1573 return (s
->method
->get_timeout());
1576 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1577 int (*func
) (void *))
1580 if (s
->waitctx
== NULL
) {
1581 s
->waitctx
= ASYNC_WAIT_CTX_new();
1582 if (s
->waitctx
== NULL
)
1585 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1586 sizeof(struct ssl_async_args
))) {
1588 s
->rwstate
= SSL_NOTHING
;
1589 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1592 s
->rwstate
= SSL_ASYNC_PAUSED
;
1595 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1601 s
->rwstate
= SSL_NOTHING
;
1602 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1603 /* Shouldn't happen */
1608 static int ssl_io_intern(void *vargs
)
1610 struct ssl_async_args
*args
;
1615 args
= (struct ssl_async_args
*)vargs
;
1619 switch (args
->type
) {
1621 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1623 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1625 return args
->f
.func_other(s
);
1630 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1632 if (s
->handshake_func
== NULL
) {
1633 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1637 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1638 s
->rwstate
= SSL_NOTHING
;
1642 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1643 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1644 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1648 * If we are a client and haven't received the ServerHello etc then we
1651 ossl_statem_check_finish_init(s
, 0);
1653 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1654 struct ssl_async_args args
;
1660 args
.type
= READFUNC
;
1661 args
.f
.func_read
= s
->method
->ssl_read
;
1663 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1664 *readbytes
= s
->asyncrw
;
1667 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1671 int SSL_read(SSL
*s
, void *buf
, int num
)
1677 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1681 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1684 * The cast is safe here because ret should be <= INT_MAX because num is
1688 ret
= (int)readbytes
;
1693 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1695 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1702 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1707 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1708 return SSL_READ_EARLY_DATA_ERROR
;
1711 switch (s
->early_data_state
) {
1712 case SSL_EARLY_DATA_NONE
:
1713 if (!SSL_in_before(s
)) {
1714 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1715 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1716 return SSL_READ_EARLY_DATA_ERROR
;
1720 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1721 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1722 ret
= SSL_accept(s
);
1725 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1726 return SSL_READ_EARLY_DATA_ERROR
;
1730 case SSL_EARLY_DATA_READ_RETRY
:
1731 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1732 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1733 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1735 * State machine will update early_data_state to
1736 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1739 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1740 != SSL_EARLY_DATA_FINISHED_READING
)) {
1741 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1742 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1743 : SSL_READ_EARLY_DATA_ERROR
;
1746 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1749 return SSL_READ_EARLY_DATA_FINISH
;
1752 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1753 return SSL_READ_EARLY_DATA_ERROR
;
1757 int SSL_get_early_data_status(const SSL
*s
)
1759 return s
->ext
.early_data
;
1762 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1764 if (s
->handshake_func
== NULL
) {
1765 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1769 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1772 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1773 struct ssl_async_args args
;
1779 args
.type
= READFUNC
;
1780 args
.f
.func_read
= s
->method
->ssl_peek
;
1782 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1783 *readbytes
= s
->asyncrw
;
1786 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1790 int SSL_peek(SSL
*s
, void *buf
, int num
)
1796 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1800 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1803 * The cast is safe here because ret should be <= INT_MAX because num is
1807 ret
= (int)readbytes
;
1813 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1815 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1822 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1824 if (s
->handshake_func
== NULL
) {
1825 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1829 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1830 s
->rwstate
= SSL_NOTHING
;
1831 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1835 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1836 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1837 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1838 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1841 /* If we are a client and haven't sent the Finished we better do that */
1842 ossl_statem_check_finish_init(s
, 1);
1844 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1846 struct ssl_async_args args
;
1849 args
.buf
= (void *)buf
;
1851 args
.type
= WRITEFUNC
;
1852 args
.f
.func_write
= s
->method
->ssl_write
;
1854 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1855 *written
= s
->asyncrw
;
1858 return s
->method
->ssl_write(s
, buf
, num
, written
);
1862 int SSL_write(SSL
*s
, const void *buf
, int num
)
1868 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1872 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1875 * The cast is safe here because ret should be <= INT_MAX because num is
1884 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1886 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1893 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1895 int ret
, early_data_state
;
1897 switch (s
->early_data_state
) {
1898 case SSL_EARLY_DATA_NONE
:
1900 || !SSL_in_before(s
)
1901 || s
->session
== NULL
1902 || s
->session
->ext
.max_early_data
== 0) {
1903 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1904 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1909 case SSL_EARLY_DATA_CONNECT_RETRY
:
1910 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1911 ret
= SSL_connect(s
);
1914 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1919 case SSL_EARLY_DATA_WRITE_RETRY
:
1920 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1921 ret
= SSL_write_ex(s
, buf
, num
, written
);
1922 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1925 case SSL_EARLY_DATA_FINISHED_READING
:
1926 case SSL_EARLY_DATA_READ_RETRY
:
1927 early_data_state
= s
->early_data_state
;
1928 /* We are a server writing to an unauthenticated client */
1929 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1930 ret
= SSL_write_ex(s
, buf
, num
, written
);
1931 s
->early_data_state
= early_data_state
;
1935 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1940 int SSL_shutdown(SSL
*s
)
1943 * Note that this function behaves differently from what one might
1944 * expect. Return values are 0 for no success (yet), 1 for success; but
1945 * calling it once is usually not enough, even if blocking I/O is used
1946 * (see ssl3_shutdown).
1949 if (s
->handshake_func
== NULL
) {
1950 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1954 if (!SSL_in_init(s
)) {
1955 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1956 struct ssl_async_args args
;
1959 args
.type
= OTHERFUNC
;
1960 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1962 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1964 return s
->method
->ssl_shutdown(s
);
1967 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1972 int SSL_key_update(SSL
*s
, int updatetype
)
1975 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1976 * negotiated, and that it is appropriate to call SSL_key_update() instead
1977 * of SSL_renegotiate().
1979 if (!SSL_IS_TLS13(s
)) {
1980 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1984 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1985 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1986 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1990 if (!SSL_is_init_finished(s
)) {
1991 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1995 ossl_statem_set_in_init(s
, 1);
1996 s
->key_update
= updatetype
;
2000 int SSL_get_key_update_type(SSL
*s
)
2002 return s
->key_update
;
2005 int SSL_renegotiate(SSL
*s
)
2007 if (SSL_IS_TLS13(s
)) {
2008 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2012 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2013 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2020 return (s
->method
->ssl_renegotiate(s
));
2023 int SSL_renegotiate_abbreviated(SSL
*s
)
2025 if (SSL_IS_TLS13(s
)) {
2026 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2030 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2031 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2038 return (s
->method
->ssl_renegotiate(s
));
2041 int SSL_renegotiate_pending(SSL
*s
)
2044 * becomes true when negotiation is requested; false again once a
2045 * handshake has finished
2047 return (s
->renegotiate
!= 0);
2050 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2055 case SSL_CTRL_GET_READ_AHEAD
:
2056 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2057 case SSL_CTRL_SET_READ_AHEAD
:
2058 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2059 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2062 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2063 s
->msg_callback_arg
= parg
;
2067 return (s
->mode
|= larg
);
2068 case SSL_CTRL_CLEAR_MODE
:
2069 return (s
->mode
&= ~larg
);
2070 case SSL_CTRL_GET_MAX_CERT_LIST
:
2071 return (long)(s
->max_cert_list
);
2072 case SSL_CTRL_SET_MAX_CERT_LIST
:
2075 l
= (long)s
->max_cert_list
;
2076 s
->max_cert_list
= (size_t)larg
;
2078 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2079 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2081 s
->max_send_fragment
= larg
;
2082 if (s
->max_send_fragment
< s
->split_send_fragment
)
2083 s
->split_send_fragment
= s
->max_send_fragment
;
2085 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2086 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2088 s
->split_send_fragment
= larg
;
2090 case SSL_CTRL_SET_MAX_PIPELINES
:
2091 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2093 s
->max_pipelines
= larg
;
2095 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2097 case SSL_CTRL_GET_RI_SUPPORT
:
2099 return s
->s3
->send_connection_binding
;
2102 case SSL_CTRL_CERT_FLAGS
:
2103 return (s
->cert
->cert_flags
|= larg
);
2104 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2105 return (s
->cert
->cert_flags
&= ~larg
);
2107 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2109 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2111 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2112 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2114 return TLS_CIPHER_LEN
;
2116 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2117 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2119 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2123 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2124 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2125 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2126 &s
->min_proto_version
);
2127 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2128 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2129 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2130 &s
->max_proto_version
);
2132 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2136 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2139 case SSL_CTRL_SET_MSG_CALLBACK
:
2140 s
->msg_callback
= (void (*)
2141 (int write_p
, int version
, int content_type
,
2142 const void *buf
, size_t len
, SSL
*ssl
,
2147 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2151 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2153 return ctx
->sessions
;
2156 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2159 /* For some cases with ctx == NULL perform syntax checks */
2162 #ifndef OPENSSL_NO_EC
2163 case SSL_CTRL_SET_GROUPS_LIST
:
2164 return tls1_set_groups_list(NULL
, NULL
, parg
);
2166 case SSL_CTRL_SET_SIGALGS_LIST
:
2167 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2168 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2175 case SSL_CTRL_GET_READ_AHEAD
:
2176 return (ctx
->read_ahead
);
2177 case SSL_CTRL_SET_READ_AHEAD
:
2178 l
= ctx
->read_ahead
;
2179 ctx
->read_ahead
= larg
;
2182 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2183 ctx
->msg_callback_arg
= parg
;
2186 case SSL_CTRL_GET_MAX_CERT_LIST
:
2187 return (long)(ctx
->max_cert_list
);
2188 case SSL_CTRL_SET_MAX_CERT_LIST
:
2191 l
= (long)ctx
->max_cert_list
;
2192 ctx
->max_cert_list
= (size_t)larg
;
2195 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2198 l
= (long)ctx
->session_cache_size
;
2199 ctx
->session_cache_size
= (size_t)larg
;
2201 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2202 return (long)(ctx
->session_cache_size
);
2203 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2204 l
= ctx
->session_cache_mode
;
2205 ctx
->session_cache_mode
= larg
;
2207 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2208 return (ctx
->session_cache_mode
);
2210 case SSL_CTRL_SESS_NUMBER
:
2211 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2212 case SSL_CTRL_SESS_CONNECT
:
2213 return (ctx
->stats
.sess_connect
);
2214 case SSL_CTRL_SESS_CONNECT_GOOD
:
2215 return (ctx
->stats
.sess_connect_good
);
2216 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2217 return (ctx
->stats
.sess_connect_renegotiate
);
2218 case SSL_CTRL_SESS_ACCEPT
:
2219 return (ctx
->stats
.sess_accept
);
2220 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2221 return (ctx
->stats
.sess_accept_good
);
2222 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2223 return (ctx
->stats
.sess_accept_renegotiate
);
2224 case SSL_CTRL_SESS_HIT
:
2225 return (ctx
->stats
.sess_hit
);
2226 case SSL_CTRL_SESS_CB_HIT
:
2227 return (ctx
->stats
.sess_cb_hit
);
2228 case SSL_CTRL_SESS_MISSES
:
2229 return (ctx
->stats
.sess_miss
);
2230 case SSL_CTRL_SESS_TIMEOUTS
:
2231 return (ctx
->stats
.sess_timeout
);
2232 case SSL_CTRL_SESS_CACHE_FULL
:
2233 return (ctx
->stats
.sess_cache_full
);
2235 return (ctx
->mode
|= larg
);
2236 case SSL_CTRL_CLEAR_MODE
:
2237 return (ctx
->mode
&= ~larg
);
2238 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2239 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2241 ctx
->max_send_fragment
= larg
;
2242 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2243 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2245 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2246 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2248 ctx
->split_send_fragment
= larg
;
2250 case SSL_CTRL_SET_MAX_PIPELINES
:
2251 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2253 ctx
->max_pipelines
= larg
;
2255 case SSL_CTRL_CERT_FLAGS
:
2256 return (ctx
->cert
->cert_flags
|= larg
);
2257 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2258 return (ctx
->cert
->cert_flags
&= ~larg
);
2259 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2260 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2261 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2262 &ctx
->min_proto_version
);
2263 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2264 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2265 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2266 &ctx
->max_proto_version
);
2268 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2272 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2275 case SSL_CTRL_SET_MSG_CALLBACK
:
2276 ctx
->msg_callback
= (void (*)
2277 (int write_p
, int version
, int content_type
,
2278 const void *buf
, size_t len
, SSL
*ssl
,
2283 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2287 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2296 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2297 const SSL_CIPHER
*const *bp
)
2299 if ((*ap
)->id
> (*bp
)->id
)
2301 if ((*ap
)->id
< (*bp
)->id
)
2306 /** return a STACK of the ciphers available for the SSL and in order of
2308 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2311 if (s
->cipher_list
!= NULL
) {
2312 return (s
->cipher_list
);
2313 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2314 return (s
->ctx
->cipher_list
);
2320 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2322 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2324 return s
->session
->ciphers
;
2327 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2329 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2331 ciphers
= SSL_get_ciphers(s
);
2334 ssl_set_client_disabled(s
);
2335 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2336 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2337 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2339 sk
= sk_SSL_CIPHER_new_null();
2342 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2343 sk_SSL_CIPHER_free(sk
);
2351 /** return a STACK of the ciphers available for the SSL and in order of
2353 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2356 if (s
->cipher_list_by_id
!= NULL
) {
2357 return (s
->cipher_list_by_id
);
2358 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2359 return (s
->ctx
->cipher_list_by_id
);
2365 /** The old interface to get the same thing as SSL_get_ciphers() */
2366 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2368 const SSL_CIPHER
*c
;
2369 STACK_OF(SSL_CIPHER
) *sk
;
2373 sk
= SSL_get_ciphers(s
);
2374 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2376 c
= sk_SSL_CIPHER_value(sk
, n
);
2382 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2384 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2387 return ctx
->cipher_list
;
2391 /** specify the ciphers to be used by default by the SSL_CTX */
2392 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2394 STACK_OF(SSL_CIPHER
) *sk
;
2396 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2397 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2399 * ssl_create_cipher_list may return an empty stack if it was unable to
2400 * find a cipher matching the given rule string (for example if the rule
2401 * string specifies a cipher which has been disabled). This is not an
2402 * error as far as ssl_create_cipher_list is concerned, and hence
2403 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2407 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2408 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2414 /** specify the ciphers to be used by the SSL */
2415 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2417 STACK_OF(SSL_CIPHER
) *sk
;
2419 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2420 &s
->cipher_list_by_id
, str
, s
->cert
);
2421 /* see comment in SSL_CTX_set_cipher_list */
2424 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2425 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2431 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2434 STACK_OF(SSL_CIPHER
) *sk
;
2435 const SSL_CIPHER
*c
;
2438 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2442 sk
= s
->session
->ciphers
;
2444 if (sk_SSL_CIPHER_num(sk
) == 0)
2447 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2450 c
= sk_SSL_CIPHER_value(sk
, i
);
2451 n
= strlen(c
->name
);
2458 memcpy(p
, c
->name
, n
+ 1);
2467 /** return a servername extension value if provided in Client Hello, or NULL.
2468 * So far, only host_name types are defined (RFC 3546).
2471 const char *SSL_get_servername(const SSL
*s
, const int type
)
2473 if (type
!= TLSEXT_NAMETYPE_host_name
)
2476 return s
->session
&& !s
->ext
.hostname
?
2477 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2480 int SSL_get_servername_type(const SSL
*s
)
2483 && (!s
->ext
.hostname
? s
->session
->
2484 ext
.hostname
: s
->ext
.hostname
))
2485 return TLSEXT_NAMETYPE_host_name
;
2490 * SSL_select_next_proto implements the standard protocol selection. It is
2491 * expected that this function is called from the callback set by
2492 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2493 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2494 * not included in the length. A byte string of length 0 is invalid. No byte
2495 * string may be truncated. The current, but experimental algorithm for
2496 * selecting the protocol is: 1) If the server doesn't support NPN then this
2497 * is indicated to the callback. In this case, the client application has to
2498 * abort the connection or have a default application level protocol. 2) If
2499 * the server supports NPN, but advertises an empty list then the client
2500 * selects the first protocol in its list, but indicates via the API that this
2501 * fallback case was enacted. 3) Otherwise, the client finds the first
2502 * protocol in the server's list that it supports and selects this protocol.
2503 * This is because it's assumed that the server has better information about
2504 * which protocol a client should use. 4) If the client doesn't support any
2505 * of the server's advertised protocols, then this is treated the same as
2506 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2507 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2509 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2510 const unsigned char *server
,
2511 unsigned int server_len
,
2512 const unsigned char *client
, unsigned int client_len
)
2515 const unsigned char *result
;
2516 int status
= OPENSSL_NPN_UNSUPPORTED
;
2519 * For each protocol in server preference order, see if we support it.
2521 for (i
= 0; i
< server_len
;) {
2522 for (j
= 0; j
< client_len
;) {
2523 if (server
[i
] == client
[j
] &&
2524 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2525 /* We found a match */
2526 result
= &server
[i
];
2527 status
= OPENSSL_NPN_NEGOTIATED
;
2537 /* There's no overlap between our protocols and the server's list. */
2539 status
= OPENSSL_NPN_NO_OVERLAP
;
2542 *out
= (unsigned char *)result
+ 1;
2543 *outlen
= result
[0];
2547 #ifndef OPENSSL_NO_NEXTPROTONEG
2549 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2550 * client's requested protocol for this connection and returns 0. If the
2551 * client didn't request any protocol, then *data is set to NULL. Note that
2552 * the client can request any protocol it chooses. The value returned from
2553 * this function need not be a member of the list of supported protocols
2554 * provided by the callback.
2556 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2563 *len
= (unsigned int)s
->ext
.npn_len
;
2568 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2569 * a TLS server needs a list of supported protocols for Next Protocol
2570 * Negotiation. The returned list must be in wire format. The list is
2571 * returned by setting |out| to point to it and |outlen| to its length. This
2572 * memory will not be modified, but one should assume that the SSL* keeps a
2573 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2574 * wishes to advertise. Otherwise, no such extension will be included in the
2577 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2578 SSL_CTX_npn_advertised_cb_func cb
,
2581 ctx
->ext
.npn_advertised_cb
= cb
;
2582 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2586 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2587 * client needs to select a protocol from the server's provided list. |out|
2588 * must be set to point to the selected protocol (which may be within |in|).
2589 * The length of the protocol name must be written into |outlen|. The
2590 * server's advertised protocols are provided in |in| and |inlen|. The
2591 * callback can assume that |in| is syntactically valid. The client must
2592 * select a protocol. It is fatal to the connection if this callback returns
2593 * a value other than SSL_TLSEXT_ERR_OK.
2595 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2596 SSL_CTX_npn_select_cb_func cb
,
2599 ctx
->ext
.npn_select_cb
= cb
;
2600 ctx
->ext
.npn_select_cb_arg
= arg
;
2605 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2606 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2607 * length-prefixed strings). Returns 0 on success.
2609 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2610 unsigned int protos_len
)
2612 OPENSSL_free(ctx
->ext
.alpn
);
2613 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2614 if (ctx
->ext
.alpn
== NULL
) {
2615 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2618 ctx
->ext
.alpn_len
= protos_len
;
2624 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2625 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2626 * length-prefixed strings). Returns 0 on success.
2628 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2629 unsigned int protos_len
)
2631 OPENSSL_free(ssl
->ext
.alpn
);
2632 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2633 if (ssl
->ext
.alpn
== NULL
) {
2634 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2637 ssl
->ext
.alpn_len
= protos_len
;
2643 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2644 * called during ClientHello processing in order to select an ALPN protocol
2645 * from the client's list of offered protocols.
2647 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2648 SSL_CTX_alpn_select_cb_func cb
,
2651 ctx
->ext
.alpn_select_cb
= cb
;
2652 ctx
->ext
.alpn_select_cb_arg
= arg
;
2656 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2657 * On return it sets |*data| to point to |*len| bytes of protocol name
2658 * (not including the leading length-prefix byte). If the server didn't
2659 * respond with a negotiated protocol then |*len| will be zero.
2661 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2666 *data
= ssl
->s3
->alpn_selected
;
2670 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2673 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2674 const char *label
, size_t llen
,
2675 const unsigned char *context
, size_t contextlen
,
2678 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2681 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2683 contextlen
, use_context
);
2686 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2688 const unsigned char *session_id
= a
->session_id
;
2690 unsigned char tmp_storage
[4];
2692 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2693 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2694 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2695 session_id
= tmp_storage
;
2699 ((unsigned long)session_id
[0]) |
2700 ((unsigned long)session_id
[1] << 8L) |
2701 ((unsigned long)session_id
[2] << 16L) |
2702 ((unsigned long)session_id
[3] << 24L);
2707 * NB: If this function (or indeed the hash function which uses a sort of
2708 * coarser function than this one) is changed, ensure
2709 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2710 * being able to construct an SSL_SESSION that will collide with any existing
2711 * session with a matching session ID.
2713 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2715 if (a
->ssl_version
!= b
->ssl_version
)
2717 if (a
->session_id_length
!= b
->session_id_length
)
2719 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2723 * These wrapper functions should remain rather than redeclaring
2724 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2725 * variable. The reason is that the functions aren't static, they're exposed
2729 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2731 SSL_CTX
*ret
= NULL
;
2734 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2738 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2741 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2742 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2745 ret
= OPENSSL_zalloc(sizeof(*ret
));
2750 ret
->min_proto_version
= 0;
2751 ret
->max_proto_version
= 0;
2752 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2753 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2754 /* We take the system default. */
2755 ret
->session_timeout
= meth
->get_timeout();
2756 ret
->references
= 1;
2757 ret
->lock
= CRYPTO_THREAD_lock_new();
2758 if (ret
->lock
== NULL
) {
2759 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2763 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2764 ret
->verify_mode
= SSL_VERIFY_NONE
;
2765 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2768 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2769 if (ret
->sessions
== NULL
)
2771 ret
->cert_store
= X509_STORE_new();
2772 if (ret
->cert_store
== NULL
)
2774 #ifndef OPENSSL_NO_CT
2775 ret
->ctlog_store
= CTLOG_STORE_new();
2776 if (ret
->ctlog_store
== NULL
)
2779 if (!ssl_create_cipher_list(ret
->method
,
2780 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2781 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2782 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2783 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2787 ret
->param
= X509_VERIFY_PARAM_new();
2788 if (ret
->param
== NULL
)
2791 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2792 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2795 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2796 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2800 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2803 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2806 /* No compression for DTLS */
2807 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2808 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2810 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2811 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2813 /* Setup RFC5077 ticket keys */
2814 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2815 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2816 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2817 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2818 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2819 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2820 ret
->options
|= SSL_OP_NO_TICKET
;
2822 #ifndef OPENSSL_NO_SRP
2823 if (!SSL_CTX_SRP_CTX_init(ret
))
2826 #ifndef OPENSSL_NO_ENGINE
2827 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2828 # define eng_strx(x) #x
2829 # define eng_str(x) eng_strx(x)
2830 /* Use specific client engine automatically... ignore errors */
2833 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2836 ENGINE_load_builtin_engines();
2837 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2839 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2845 * Default is to connect to non-RI servers. When RI is more widely
2846 * deployed might change this.
2848 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2850 * Disable compression by default to prevent CRIME. Applications can
2851 * re-enable compression by configuring
2852 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2853 * or by using the SSL_CONF library.
2855 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2857 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2860 * Default max early data is a fully loaded single record. Could be split
2861 * across multiple records in practice
2863 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2867 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2873 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2877 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2880 REF_PRINT_COUNT("SSL_CTX", ctx
);
2881 REF_ASSERT_ISNT(i
< 2);
2882 return ((i
> 1) ? 1 : 0);
2885 void SSL_CTX_free(SSL_CTX
*a
)
2892 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2893 REF_PRINT_COUNT("SSL_CTX", a
);
2896 REF_ASSERT_ISNT(i
< 0);
2898 X509_VERIFY_PARAM_free(a
->param
);
2899 dane_ctx_final(&a
->dane
);
2902 * Free internal session cache. However: the remove_cb() may reference
2903 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2904 * after the sessions were flushed.
2905 * As the ex_data handling routines might also touch the session cache,
2906 * the most secure solution seems to be: empty (flush) the cache, then
2907 * free ex_data, then finally free the cache.
2908 * (See ticket [openssl.org #212].)
2910 if (a
->sessions
!= NULL
)
2911 SSL_CTX_flush_sessions(a
, 0);
2913 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2914 lh_SSL_SESSION_free(a
->sessions
);
2915 X509_STORE_free(a
->cert_store
);
2916 #ifndef OPENSSL_NO_CT
2917 CTLOG_STORE_free(a
->ctlog_store
);
2919 sk_SSL_CIPHER_free(a
->cipher_list
);
2920 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2921 ssl_cert_free(a
->cert
);
2922 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2923 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2924 a
->comp_methods
= NULL
;
2925 #ifndef OPENSSL_NO_SRTP
2926 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2928 #ifndef OPENSSL_NO_SRP
2929 SSL_CTX_SRP_CTX_free(a
);
2931 #ifndef OPENSSL_NO_ENGINE
2932 ENGINE_finish(a
->client_cert_engine
);
2935 #ifndef OPENSSL_NO_EC
2936 OPENSSL_free(a
->ext
.ecpointformats
);
2937 OPENSSL_free(a
->ext
.supportedgroups
);
2939 OPENSSL_free(a
->ext
.alpn
);
2941 CRYPTO_THREAD_lock_free(a
->lock
);
2946 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2948 ctx
->default_passwd_callback
= cb
;
2951 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2953 ctx
->default_passwd_callback_userdata
= u
;
2956 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2958 return ctx
->default_passwd_callback
;
2961 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2963 return ctx
->default_passwd_callback_userdata
;
2966 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2968 s
->default_passwd_callback
= cb
;
2971 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2973 s
->default_passwd_callback_userdata
= u
;
2976 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2978 return s
->default_passwd_callback
;
2981 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2983 return s
->default_passwd_callback_userdata
;
2986 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2987 int (*cb
) (X509_STORE_CTX
*, void *),
2990 ctx
->app_verify_callback
= cb
;
2991 ctx
->app_verify_arg
= arg
;
2994 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2995 int (*cb
) (int, X509_STORE_CTX
*))
2997 ctx
->verify_mode
= mode
;
2998 ctx
->default_verify_callback
= cb
;
3001 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3003 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3006 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3008 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3011 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3013 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3016 void ssl_set_masks(SSL
*s
)
3019 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3020 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3021 unsigned long mask_k
, mask_a
;
3022 #ifndef OPENSSL_NO_EC
3023 int have_ecc_cert
, ecdsa_ok
;
3028 #ifndef OPENSSL_NO_DH
3029 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3034 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3035 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3036 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3037 #ifndef OPENSSL_NO_EC
3038 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3044 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3045 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3048 #ifndef OPENSSL_NO_GOST
3049 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3050 mask_k
|= SSL_kGOST
;
3051 mask_a
|= SSL_aGOST12
;
3053 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3054 mask_k
|= SSL_kGOST
;
3055 mask_a
|= SSL_aGOST12
;
3057 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3058 mask_k
|= SSL_kGOST
;
3059 mask_a
|= SSL_aGOST01
;
3069 if (rsa_enc
|| rsa_sign
) {
3077 mask_a
|= SSL_aNULL
;
3080 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3081 * depending on the key usage extension.
3083 #ifndef OPENSSL_NO_EC
3084 if (have_ecc_cert
) {
3086 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3087 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3088 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3091 mask_a
|= SSL_aECDSA
;
3093 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3094 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3095 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3096 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3097 mask_a
|= SSL_aECDSA
;
3100 #ifndef OPENSSL_NO_EC
3101 mask_k
|= SSL_kECDHE
;
3104 #ifndef OPENSSL_NO_PSK
3107 if (mask_k
& SSL_kRSA
)
3108 mask_k
|= SSL_kRSAPSK
;
3109 if (mask_k
& SSL_kDHE
)
3110 mask_k
|= SSL_kDHEPSK
;
3111 if (mask_k
& SSL_kECDHE
)
3112 mask_k
|= SSL_kECDHEPSK
;
3115 s
->s3
->tmp
.mask_k
= mask_k
;
3116 s
->s3
->tmp
.mask_a
= mask_a
;
3119 #ifndef OPENSSL_NO_EC
3121 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3123 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3124 /* key usage, if present, must allow signing */
3125 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3126 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3127 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3131 return 1; /* all checks are ok */
3136 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3137 size_t *serverinfo_length
)
3139 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3140 *serverinfo_length
= 0;
3142 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3145 *serverinfo
= cpk
->serverinfo
;
3146 *serverinfo_length
= cpk
->serverinfo_length
;
3150 void ssl_update_cache(SSL
*s
, int mode
)
3155 * If the session_id_length is 0, we are not supposed to cache it, and it
3156 * would be rather hard to do anyway :-)
3158 if (s
->session
->session_id_length
== 0)
3161 i
= s
->session_ctx
->session_cache_mode
;
3162 if ((i
& mode
) && (!s
->hit
)
3163 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3164 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3165 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3166 SSL_SESSION_up_ref(s
->session
);
3167 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3168 SSL_SESSION_free(s
->session
);
3171 /* auto flush every 255 connections */
3172 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3173 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3174 ? s
->session_ctx
->stats
.sess_connect_good
3175 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3176 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3181 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3186 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3191 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3195 if (s
->method
!= meth
) {
3196 const SSL_METHOD
*sm
= s
->method
;
3197 int (*hf
) (SSL
*) = s
->handshake_func
;
3199 if (sm
->version
== meth
->version
)
3204 ret
= s
->method
->ssl_new(s
);
3207 if (hf
== sm
->ssl_connect
)
3208 s
->handshake_func
= meth
->ssl_connect
;
3209 else if (hf
== sm
->ssl_accept
)
3210 s
->handshake_func
= meth
->ssl_accept
;
3215 int SSL_get_error(const SSL
*s
, int i
)
3222 return (SSL_ERROR_NONE
);
3225 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3226 * where we do encode the error
3228 if ((l
= ERR_peek_error()) != 0) {
3229 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3230 return (SSL_ERROR_SYSCALL
);
3232 return (SSL_ERROR_SSL
);
3235 if (SSL_want_read(s
)) {
3236 bio
= SSL_get_rbio(s
);
3237 if (BIO_should_read(bio
))
3238 return (SSL_ERROR_WANT_READ
);
3239 else if (BIO_should_write(bio
))
3241 * This one doesn't make too much sense ... We never try to write
3242 * to the rbio, and an application program where rbio and wbio
3243 * are separate couldn't even know what it should wait for.
3244 * However if we ever set s->rwstate incorrectly (so that we have
3245 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3246 * wbio *are* the same, this test works around that bug; so it
3247 * might be safer to keep it.
3249 return (SSL_ERROR_WANT_WRITE
);
3250 else if (BIO_should_io_special(bio
)) {
3251 reason
= BIO_get_retry_reason(bio
);
3252 if (reason
== BIO_RR_CONNECT
)
3253 return (SSL_ERROR_WANT_CONNECT
);
3254 else if (reason
== BIO_RR_ACCEPT
)
3255 return (SSL_ERROR_WANT_ACCEPT
);
3257 return (SSL_ERROR_SYSCALL
); /* unknown */
3261 if (SSL_want_write(s
)) {
3262 /* Access wbio directly - in order to use the buffered bio if present */
3264 if (BIO_should_write(bio
))
3265 return (SSL_ERROR_WANT_WRITE
);
3266 else if (BIO_should_read(bio
))
3268 * See above (SSL_want_read(s) with BIO_should_write(bio))
3270 return (SSL_ERROR_WANT_READ
);
3271 else if (BIO_should_io_special(bio
)) {
3272 reason
= BIO_get_retry_reason(bio
);
3273 if (reason
== BIO_RR_CONNECT
)
3274 return (SSL_ERROR_WANT_CONNECT
);
3275 else if (reason
== BIO_RR_ACCEPT
)
3276 return (SSL_ERROR_WANT_ACCEPT
);
3278 return (SSL_ERROR_SYSCALL
);
3281 if (SSL_want_x509_lookup(s
))
3282 return (SSL_ERROR_WANT_X509_LOOKUP
);
3283 if (SSL_want_async(s
))
3284 return SSL_ERROR_WANT_ASYNC
;
3285 if (SSL_want_async_job(s
))
3286 return SSL_ERROR_WANT_ASYNC_JOB
;
3287 if (SSL_want_early(s
))
3288 return SSL_ERROR_WANT_EARLY
;
3290 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3291 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3292 return (SSL_ERROR_ZERO_RETURN
);
3294 return (SSL_ERROR_SYSCALL
);
3297 static int ssl_do_handshake_intern(void *vargs
)
3299 struct ssl_async_args
*args
;
3302 args
= (struct ssl_async_args
*)vargs
;
3305 return s
->handshake_func(s
);
3308 int SSL_do_handshake(SSL
*s
)
3312 if (s
->handshake_func
== NULL
) {
3313 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3317 ossl_statem_check_finish_init(s
, -1);
3319 s
->method
->ssl_renegotiate_check(s
, 0);
3321 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3322 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3323 struct ssl_async_args args
;
3327 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3329 ret
= s
->handshake_func(s
);
3335 void SSL_set_accept_state(SSL
*s
)
3339 ossl_statem_clear(s
);
3340 s
->handshake_func
= s
->method
->ssl_accept
;
3344 void SSL_set_connect_state(SSL
*s
)
3348 ossl_statem_clear(s
);
3349 s
->handshake_func
= s
->method
->ssl_connect
;
3353 int ssl_undefined_function(SSL
*s
)
3355 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3359 int ssl_undefined_void_function(void)
3361 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3362 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3366 int ssl_undefined_const_function(const SSL
*s
)
3371 const SSL_METHOD
*ssl_bad_method(int ver
)
3373 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3377 const char *ssl_protocol_to_string(int version
)
3381 case TLS1_3_VERSION
:
3384 case TLS1_2_VERSION
:
3387 case TLS1_1_VERSION
:
3402 case DTLS1_2_VERSION
:
3410 const char *SSL_get_version(const SSL
*s
)
3412 return ssl_protocol_to_string(s
->version
);
3415 SSL
*SSL_dup(SSL
*s
)
3417 STACK_OF(X509_NAME
) *sk
;
3422 /* If we're not quiescent, just up_ref! */
3423 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3424 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3429 * Otherwise, copy configuration state, and session if set.
3431 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3434 if (s
->session
!= NULL
) {
3436 * Arranges to share the same session via up_ref. This "copies"
3437 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3439 if (!SSL_copy_session_id(ret
, s
))
3443 * No session has been established yet, so we have to expect that
3444 * s->cert or ret->cert will be changed later -- they should not both
3445 * point to the same object, and thus we can't use
3446 * SSL_copy_session_id.
3448 if (!SSL_set_ssl_method(ret
, s
->method
))
3451 if (s
->cert
!= NULL
) {
3452 ssl_cert_free(ret
->cert
);
3453 ret
->cert
= ssl_cert_dup(s
->cert
);
3454 if (ret
->cert
== NULL
)
3458 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3459 (int)s
->sid_ctx_length
))
3463 if (!ssl_dane_dup(ret
, s
))
3465 ret
->version
= s
->version
;
3466 ret
->options
= s
->options
;
3467 ret
->mode
= s
->mode
;
3468 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3469 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3470 ret
->msg_callback
= s
->msg_callback
;
3471 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3472 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3473 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3474 ret
->generate_session_id
= s
->generate_session_id
;
3476 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3478 /* copy app data, a little dangerous perhaps */
3479 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3482 /* setup rbio, and wbio */
3483 if (s
->rbio
!= NULL
) {
3484 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3487 if (s
->wbio
!= NULL
) {
3488 if (s
->wbio
!= s
->rbio
) {
3489 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3492 BIO_up_ref(ret
->rbio
);
3493 ret
->wbio
= ret
->rbio
;
3497 ret
->server
= s
->server
;
3498 if (s
->handshake_func
) {
3500 SSL_set_accept_state(ret
);
3502 SSL_set_connect_state(ret
);
3504 ret
->shutdown
= s
->shutdown
;
3507 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3508 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3510 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3512 /* dup the cipher_list and cipher_list_by_id stacks */
3513 if (s
->cipher_list
!= NULL
) {
3514 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3517 if (s
->cipher_list_by_id
!= NULL
)
3518 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3522 /* Dup the client_CA list */
3523 if (s
->ca_names
!= NULL
) {
3524 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3527 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3528 xn
= sk_X509_NAME_value(sk
, i
);
3529 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3542 void ssl_clear_cipher_ctx(SSL
*s
)
3544 if (s
->enc_read_ctx
!= NULL
) {
3545 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3546 s
->enc_read_ctx
= NULL
;
3548 if (s
->enc_write_ctx
!= NULL
) {
3549 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3550 s
->enc_write_ctx
= NULL
;
3552 #ifndef OPENSSL_NO_COMP
3553 COMP_CTX_free(s
->expand
);
3555 COMP_CTX_free(s
->compress
);
3560 X509
*SSL_get_certificate(const SSL
*s
)
3562 if (s
->cert
!= NULL
)
3563 return (s
->cert
->key
->x509
);
3568 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3570 if (s
->cert
!= NULL
)
3571 return (s
->cert
->key
->privatekey
);
3576 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3578 if (ctx
->cert
!= NULL
)
3579 return ctx
->cert
->key
->x509
;
3584 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3586 if (ctx
->cert
!= NULL
)
3587 return ctx
->cert
->key
->privatekey
;
3592 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3594 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3595 return (s
->session
->cipher
);
3599 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3601 #ifndef OPENSSL_NO_COMP
3602 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3608 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3610 #ifndef OPENSSL_NO_COMP
3611 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3617 int ssl_init_wbio_buffer(SSL
*s
)
3621 if (s
->bbio
!= NULL
) {
3622 /* Already buffered. */
3626 bbio
= BIO_new(BIO_f_buffer());
3627 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3629 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3633 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3638 int ssl_free_wbio_buffer(SSL
*s
)
3640 /* callers ensure s is never null */
3641 if (s
->bbio
== NULL
)
3644 s
->wbio
= BIO_pop(s
->wbio
);
3645 if (!ossl_assert(s
->wbio
!= NULL
))
3653 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3655 ctx
->quiet_shutdown
= mode
;
3658 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3660 return (ctx
->quiet_shutdown
);
3663 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3665 s
->quiet_shutdown
= mode
;
3668 int SSL_get_quiet_shutdown(const SSL
*s
)
3670 return (s
->quiet_shutdown
);
3673 void SSL_set_shutdown(SSL
*s
, int mode
)
3678 int SSL_get_shutdown(const SSL
*s
)
3683 int SSL_version(const SSL
*s
)
3688 int SSL_client_version(const SSL
*s
)
3690 return s
->client_version
;
3693 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3698 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3701 if (ssl
->ctx
== ctx
)
3704 ctx
= ssl
->session_ctx
;
3705 new_cert
= ssl_cert_dup(ctx
->cert
);
3706 if (new_cert
== NULL
) {
3710 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3711 ssl_cert_free(new_cert
);
3715 ssl_cert_free(ssl
->cert
);
3716 ssl
->cert
= new_cert
;
3719 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3720 * so setter APIs must prevent invalid lengths from entering the system.
3722 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3726 * If the session ID context matches that of the parent SSL_CTX,
3727 * inherit it from the new SSL_CTX as well. If however the context does
3728 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3729 * leave it unchanged.
3731 if ((ssl
->ctx
!= NULL
) &&
3732 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3733 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3734 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3735 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3738 SSL_CTX_up_ref(ctx
);
3739 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3745 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3747 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3750 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3752 X509_LOOKUP
*lookup
;
3754 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3757 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3759 /* Clear any errors if the default directory does not exist */
3765 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3767 X509_LOOKUP
*lookup
;
3769 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3773 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3775 /* Clear any errors if the default file does not exist */
3781 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3784 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3787 void SSL_set_info_callback(SSL
*ssl
,
3788 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3790 ssl
->info_callback
= cb
;
3794 * One compiler (Diab DCC) doesn't like argument names in returned function
3797 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3800 return ssl
->info_callback
;
3803 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3805 ssl
->verify_result
= arg
;
3808 long SSL_get_verify_result(const SSL
*ssl
)
3810 return (ssl
->verify_result
);
3813 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3816 return sizeof(ssl
->s3
->client_random
);
3817 if (outlen
> sizeof(ssl
->s3
->client_random
))
3818 outlen
= sizeof(ssl
->s3
->client_random
);
3819 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3823 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3826 return sizeof(ssl
->s3
->server_random
);
3827 if (outlen
> sizeof(ssl
->s3
->server_random
))
3828 outlen
= sizeof(ssl
->s3
->server_random
);
3829 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3833 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3834 unsigned char *out
, size_t outlen
)
3837 return session
->master_key_length
;
3838 if (outlen
> session
->master_key_length
)
3839 outlen
= session
->master_key_length
;
3840 memcpy(out
, session
->master_key
, outlen
);
3844 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3847 if (len
> sizeof(sess
->master_key
))
3850 memcpy(sess
->master_key
, in
, len
);
3851 sess
->master_key_length
= len
;
3856 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3858 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3861 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3863 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3866 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3868 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3871 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3873 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3876 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3878 return (ctx
->cert_store
);
3881 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3883 X509_STORE_free(ctx
->cert_store
);
3884 ctx
->cert_store
= store
;
3887 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3890 X509_STORE_up_ref(store
);
3891 SSL_CTX_set_cert_store(ctx
, store
);
3894 int SSL_want(const SSL
*s
)
3896 return (s
->rwstate
);
3900 * \brief Set the callback for generating temporary DH keys.
3901 * \param ctx the SSL context.
3902 * \param dh the callback
3905 #ifndef OPENSSL_NO_DH
3906 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3907 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3910 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3913 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3916 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3920 #ifndef OPENSSL_NO_PSK
3921 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3923 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3924 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3927 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3928 if (identity_hint
!= NULL
) {
3929 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3930 if (ctx
->cert
->psk_identity_hint
== NULL
)
3933 ctx
->cert
->psk_identity_hint
= NULL
;
3937 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3942 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3943 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3946 OPENSSL_free(s
->cert
->psk_identity_hint
);
3947 if (identity_hint
!= NULL
) {
3948 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3949 if (s
->cert
->psk_identity_hint
== NULL
)
3952 s
->cert
->psk_identity_hint
= NULL
;
3956 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3958 if (s
== NULL
|| s
->session
== NULL
)
3960 return (s
->session
->psk_identity_hint
);
3963 const char *SSL_get_psk_identity(const SSL
*s
)
3965 if (s
== NULL
|| s
->session
== NULL
)
3967 return (s
->session
->psk_identity
);
3970 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3972 s
->psk_client_callback
= cb
;
3975 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3977 ctx
->psk_client_callback
= cb
;
3980 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3982 s
->psk_server_callback
= cb
;
3985 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3987 ctx
->psk_server_callback
= cb
;
3991 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
3993 s
->psk_find_session_cb
= cb
;
3996 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
3997 SSL_psk_find_session_cb_func cb
)
3999 ctx
->psk_find_session_cb
= cb
;
4002 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4004 s
->psk_use_session_cb
= cb
;
4007 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4008 SSL_psk_use_session_cb_func cb
)
4010 ctx
->psk_use_session_cb
= cb
;
4013 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4014 void (*cb
) (int write_p
, int version
,
4015 int content_type
, const void *buf
,
4016 size_t len
, SSL
*ssl
, void *arg
))
4018 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4021 void SSL_set_msg_callback(SSL
*ssl
,
4022 void (*cb
) (int write_p
, int version
,
4023 int content_type
, const void *buf
,
4024 size_t len
, SSL
*ssl
, void *arg
))
4026 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4029 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4030 int (*cb
) (SSL
*ssl
,
4034 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4035 (void (*)(void))cb
);
4038 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4039 int (*cb
) (SSL
*ssl
,
4040 int is_forward_secure
))
4042 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4043 (void (*)(void))cb
);
4046 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4047 size_t (*cb
) (SSL
*ssl
, int type
,
4048 size_t len
, void *arg
))
4050 ctx
->record_padding_cb
= cb
;
4053 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4055 ctx
->record_padding_arg
= arg
;
4058 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4060 return ctx
->record_padding_arg
;
4063 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4065 /* block size of 0 or 1 is basically no padding */
4066 if (block_size
== 1)
4067 ctx
->block_padding
= 0;
4068 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4069 ctx
->block_padding
= block_size
;
4075 void SSL_set_record_padding_callback(SSL
*ssl
,
4076 size_t (*cb
) (SSL
*ssl
, int type
,
4077 size_t len
, void *arg
))
4079 ssl
->record_padding_cb
= cb
;
4082 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4084 ssl
->record_padding_arg
= arg
;
4087 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4089 return ssl
->record_padding_arg
;
4092 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4094 /* block size of 0 or 1 is basically no padding */
4095 if (block_size
== 1)
4096 ssl
->block_padding
= 0;
4097 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4098 ssl
->block_padding
= block_size
;
4105 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4106 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4107 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4108 * Returns the newly allocated ctx;
4111 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4113 ssl_clear_hash_ctx(hash
);
4114 *hash
= EVP_MD_CTX_new();
4115 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4116 EVP_MD_CTX_free(*hash
);
4123 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4126 EVP_MD_CTX_free(*hash
);
4130 /* Retrieve handshake hashes */
4131 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4134 EVP_MD_CTX
*ctx
= NULL
;
4135 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4136 int hashleni
= EVP_MD_CTX_size(hdgst
);
4139 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4142 ctx
= EVP_MD_CTX_new();
4146 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4147 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4150 *hashlen
= hashleni
;
4154 EVP_MD_CTX_free(ctx
);
4158 int SSL_session_reused(SSL
*s
)
4163 int SSL_is_server(const SSL
*s
)
4168 #if OPENSSL_API_COMPAT < 0x10100000L
4169 void SSL_set_debug(SSL
*s
, int debug
)
4171 /* Old function was do-nothing anyway... */
4177 void SSL_set_security_level(SSL
*s
, int level
)
4179 s
->cert
->sec_level
= level
;
4182 int SSL_get_security_level(const SSL
*s
)
4184 return s
->cert
->sec_level
;
4187 void SSL_set_security_callback(SSL
*s
,
4188 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4189 int op
, int bits
, int nid
,
4190 void *other
, void *ex
))
4192 s
->cert
->sec_cb
= cb
;
4195 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4196 const SSL_CTX
*ctx
, int op
,
4197 int bits
, int nid
, void *other
,
4199 return s
->cert
->sec_cb
;
4202 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4204 s
->cert
->sec_ex
= ex
;
4207 void *SSL_get0_security_ex_data(const SSL
*s
)
4209 return s
->cert
->sec_ex
;
4212 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4214 ctx
->cert
->sec_level
= level
;
4217 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4219 return ctx
->cert
->sec_level
;
4222 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4223 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4224 int op
, int bits
, int nid
,
4225 void *other
, void *ex
))
4227 ctx
->cert
->sec_cb
= cb
;
4230 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4236 return ctx
->cert
->sec_cb
;
4239 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4241 ctx
->cert
->sec_ex
= ex
;
4244 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4246 return ctx
->cert
->sec_ex
;
4250 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4251 * can return unsigned long, instead of the generic long return value from the
4252 * control interface.
4254 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4256 return ctx
->options
;
4259 unsigned long SSL_get_options(const SSL
*s
)
4264 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4266 return ctx
->options
|= op
;
4269 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4271 return s
->options
|= op
;
4274 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4276 return ctx
->options
&= ~op
;
4279 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4281 return s
->options
&= ~op
;
4284 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4286 return s
->verified_chain
;
4289 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4291 #ifndef OPENSSL_NO_CT
4294 * Moves SCTs from the |src| stack to the |dst| stack.
4295 * The source of each SCT will be set to |origin|.
4296 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4298 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4300 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4301 sct_source_t origin
)
4307 *dst
= sk_SCT_new_null();
4309 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4314 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4315 if (SCT_set_source(sct
, origin
) != 1)
4318 if (sk_SCT_push(*dst
, sct
) <= 0)
4326 sk_SCT_push(src
, sct
); /* Put the SCT back */
4331 * Look for data collected during ServerHello and parse if found.
4332 * Returns the number of SCTs extracted.
4334 static int ct_extract_tls_extension_scts(SSL
*s
)
4336 int scts_extracted
= 0;
4338 if (s
->ext
.scts
!= NULL
) {
4339 const unsigned char *p
= s
->ext
.scts
;
4340 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4342 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4344 SCT_LIST_free(scts
);
4347 return scts_extracted
;
4351 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4352 * contains an SCT X509 extension. They will be stored in |s->scts|.
4354 * - The number of SCTs extracted, assuming an OCSP response exists.
4355 * - 0 if no OCSP response exists or it contains no SCTs.
4356 * - A negative integer if an error occurs.
4358 static int ct_extract_ocsp_response_scts(SSL
*s
)
4360 # ifndef OPENSSL_NO_OCSP
4361 int scts_extracted
= 0;
4362 const unsigned char *p
;
4363 OCSP_BASICRESP
*br
= NULL
;
4364 OCSP_RESPONSE
*rsp
= NULL
;
4365 STACK_OF(SCT
) *scts
= NULL
;
4368 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4371 p
= s
->ext
.ocsp
.resp
;
4372 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4376 br
= OCSP_response_get1_basic(rsp
);
4380 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4381 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4387 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4389 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4390 if (scts_extracted
< 0)
4394 SCT_LIST_free(scts
);
4395 OCSP_BASICRESP_free(br
);
4396 OCSP_RESPONSE_free(rsp
);
4397 return scts_extracted
;
4399 /* Behave as if no OCSP response exists */
4405 * Attempts to extract SCTs from the peer certificate.
4406 * Return the number of SCTs extracted, or a negative integer if an error
4409 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4411 int scts_extracted
= 0;
4412 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4415 STACK_OF(SCT
) *scts
=
4416 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4419 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4421 SCT_LIST_free(scts
);
4424 return scts_extracted
;
4428 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4429 * response (if it exists) and X509v3 extensions in the certificate.
4430 * Returns NULL if an error occurs.
4432 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4434 if (!s
->scts_parsed
) {
4435 if (ct_extract_tls_extension_scts(s
) < 0 ||
4436 ct_extract_ocsp_response_scts(s
) < 0 ||
4437 ct_extract_x509v3_extension_scts(s
) < 0)
4447 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4448 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4453 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4454 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4456 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4459 for (i
= 0; i
< count
; ++i
) {
4460 SCT
*sct
= sk_SCT_value(scts
, i
);
4461 int status
= SCT_get_validation_status(sct
);
4463 if (status
== SCT_VALIDATION_STATUS_VALID
)
4466 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4470 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4474 * Since code exists that uses the custom extension handler for CT, look
4475 * for this and throw an error if they have already registered to use CT.
4477 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4478 TLSEXT_TYPE_signed_certificate_timestamp
))
4480 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4481 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4485 if (callback
!= NULL
) {
4487 * If we are validating CT, then we MUST accept SCTs served via OCSP
4489 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4493 s
->ct_validation_callback
= callback
;
4494 s
->ct_validation_callback_arg
= arg
;
4499 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4500 ssl_ct_validation_cb callback
, void *arg
)
4503 * Since code exists that uses the custom extension handler for CT, look for
4504 * this and throw an error if they have already registered to use CT.
4506 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4507 TLSEXT_TYPE_signed_certificate_timestamp
))
4509 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4510 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4514 ctx
->ct_validation_callback
= callback
;
4515 ctx
->ct_validation_callback_arg
= arg
;
4519 int SSL_ct_is_enabled(const SSL
*s
)
4521 return s
->ct_validation_callback
!= NULL
;
4524 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4526 return ctx
->ct_validation_callback
!= NULL
;
4529 int ssl_validate_ct(SSL
*s
)
4532 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4534 SSL_DANE
*dane
= &s
->dane
;
4535 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4536 const STACK_OF(SCT
) *scts
;
4539 * If no callback is set, the peer is anonymous, or its chain is invalid,
4540 * skip SCT validation - just return success. Applications that continue
4541 * handshakes without certificates, with unverified chains, or pinned leaf
4542 * certificates are outside the scope of the WebPKI and CT.
4544 * The above exclusions notwithstanding the vast majority of peers will
4545 * have rather ordinary certificate chains validated by typical
4546 * applications that perform certificate verification and therefore will
4547 * process SCTs when enabled.
4549 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4550 s
->verify_result
!= X509_V_OK
||
4551 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4555 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4556 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4558 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4559 switch (dane
->mtlsa
->usage
) {
4560 case DANETLS_USAGE_DANE_TA
:
4561 case DANETLS_USAGE_DANE_EE
:
4566 ctx
= CT_POLICY_EVAL_CTX_new();
4568 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4572 issuer
= sk_X509_value(s
->verified_chain
, 1);
4573 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4574 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4575 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4576 CT_POLICY_EVAL_CTX_set_time(
4577 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4579 scts
= SSL_get0_peer_scts(s
);
4582 * This function returns success (> 0) only when all the SCTs are valid, 0
4583 * when some are invalid, and < 0 on various internal errors (out of
4584 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4585 * reason to abort the handshake, that decision is up to the callback.
4586 * Therefore, we error out only in the unexpected case that the return
4587 * value is negative.
4589 * XXX: One might well argue that the return value of this function is an
4590 * unfortunate design choice. Its job is only to determine the validation
4591 * status of each of the provided SCTs. So long as it correctly separates
4592 * the wheat from the chaff it should return success. Failure in this case
4593 * ought to correspond to an inability to carry out its duties.
4595 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4596 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4600 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4602 ret
= 0; /* This function returns 0 on failure */
4605 CT_POLICY_EVAL_CTX_free(ctx
);
4607 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4608 * failure return code here. Also the application may wish the complete
4609 * the handshake, and then disconnect cleanly at a higher layer, after
4610 * checking the verification status of the completed connection.
4612 * We therefore force a certificate verification failure which will be
4613 * visible via SSL_get_verify_result() and cached as part of any resumed
4616 * Note: the permissive callback is for information gathering only, always
4617 * returns success, and does not affect verification status. Only the
4618 * strict callback or a custom application-specified callback can trigger
4619 * connection failure or record a verification error.
4622 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4626 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4628 switch (validation_mode
) {
4630 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4632 case SSL_CT_VALIDATION_PERMISSIVE
:
4633 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4634 case SSL_CT_VALIDATION_STRICT
:
4635 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4639 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4641 switch (validation_mode
) {
4643 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4645 case SSL_CT_VALIDATION_PERMISSIVE
:
4646 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4647 case SSL_CT_VALIDATION_STRICT
:
4648 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4652 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4654 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4657 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4659 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4662 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4664 CTLOG_STORE_free(ctx
->ctlog_store
);
4665 ctx
->ctlog_store
= logs
;
4668 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4670 return ctx
->ctlog_store
;
4673 #endif /* OPENSSL_NO_CT */
4675 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4678 c
->early_cb_arg
= arg
;
4681 int SSL_early_isv2(SSL
*s
)
4683 if (s
->clienthello
== NULL
)
4685 return s
->clienthello
->isv2
;
4688 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4690 if (s
->clienthello
== NULL
)
4692 return s
->clienthello
->legacy_version
;
4695 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4697 if (s
->clienthello
== NULL
)
4700 *out
= s
->clienthello
->random
;
4701 return SSL3_RANDOM_SIZE
;
4704 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4706 if (s
->clienthello
== NULL
)
4709 *out
= s
->clienthello
->session_id
;
4710 return s
->clienthello
->session_id_len
;
4713 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4715 if (s
->clienthello
== NULL
)
4718 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4719 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4722 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4724 if (s
->clienthello
== NULL
)
4727 *out
= s
->clienthello
->compressions
;
4728 return s
->clienthello
->compressions_len
;
4731 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4737 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4739 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4740 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4744 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4745 if (present
== NULL
)
4747 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4748 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4750 if (ext
->received_order
>= num
)
4752 present
[ext
->received_order
] = ext
->type
;
4759 OPENSSL_free(present
);
4763 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4769 if (s
->clienthello
== NULL
)
4771 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4772 r
= s
->clienthello
->pre_proc_exts
+ i
;
4773 if (r
->present
&& r
->type
== type
) {
4775 *out
= PACKET_data(&r
->data
);
4777 *outlen
= PACKET_remaining(&r
->data
);
4784 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4786 ctx
->keylog_callback
= cb
;
4789 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4791 return ctx
->keylog_callback
;
4794 static int nss_keylog_int(const char *prefix
,
4796 const uint8_t *parameter_1
,
4797 size_t parameter_1_len
,
4798 const uint8_t *parameter_2
,
4799 size_t parameter_2_len
)
4802 char *cursor
= NULL
;
4807 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4810 * Our output buffer will contain the following strings, rendered with
4811 * space characters in between, terminated by a NULL character: first the
4812 * prefix, then the first parameter, then the second parameter. The
4813 * meaning of each parameter depends on the specific key material being
4814 * logged. Note that the first and second parameters are encoded in
4815 * hexadecimal, so we need a buffer that is twice their lengths.
4817 prefix_len
= strlen(prefix
);
4818 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4819 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4820 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4824 strcpy(cursor
, prefix
);
4825 cursor
+= prefix_len
;
4828 for (i
= 0; i
< parameter_1_len
; i
++) {
4829 sprintf(cursor
, "%02x", parameter_1
[i
]);
4834 for (i
= 0; i
< parameter_2_len
; i
++) {
4835 sprintf(cursor
, "%02x", parameter_2
[i
]);
4840 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4846 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4847 const uint8_t *encrypted_premaster
,
4848 size_t encrypted_premaster_len
,
4849 const uint8_t *premaster
,
4850 size_t premaster_len
)
4852 if (encrypted_premaster_len
< 8) {
4853 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4857 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4858 return nss_keylog_int("RSA",
4860 encrypted_premaster
,
4866 int ssl_log_secret(SSL
*ssl
,
4868 const uint8_t *secret
,
4871 return nss_keylog_int(label
,
4873 ssl
->s3
->client_random
,
4879 #define SSLV2_CIPHER_LEN 3
4881 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4886 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4888 if (PACKET_remaining(cipher_suites
) == 0) {
4889 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4890 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4894 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4895 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4896 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4897 *al
= SSL_AD_DECODE_ERROR
;
4901 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4902 s
->s3
->tmp
.ciphers_raw
= NULL
;
4903 s
->s3
->tmp
.ciphers_rawlen
= 0;
4906 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4907 PACKET sslv2ciphers
= *cipher_suites
;
4908 unsigned int leadbyte
;
4912 * We store the raw ciphers list in SSLv3+ format so we need to do some
4913 * preprocessing to convert the list first. If there are any SSLv2 only
4914 * ciphersuites with a non-zero leading byte then we are going to
4915 * slightly over allocate because we won't store those. But that isn't a
4918 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4919 s
->s3
->tmp
.ciphers_raw
= raw
;
4921 *al
= SSL_AD_INTERNAL_ERROR
;
4924 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4925 PACKET_remaining(&sslv2ciphers
) > 0;
4926 raw
+= TLS_CIPHER_LEN
) {
4927 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4929 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4932 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4933 *al
= SSL_AD_DECODE_ERROR
;
4934 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4935 s
->s3
->tmp
.ciphers_raw
= NULL
;
4936 s
->s3
->tmp
.ciphers_rawlen
= 0;
4940 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4942 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4943 &s
->s3
->tmp
.ciphers_rawlen
)) {
4944 *al
= SSL_AD_INTERNAL_ERROR
;
4952 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4953 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4954 STACK_OF(SSL_CIPHER
) **scsvs
)
4959 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4961 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4964 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4965 STACK_OF(SSL_CIPHER
) **skp
,
4966 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4967 int sslv2format
, int *al
)
4969 const SSL_CIPHER
*c
;
4970 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4971 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4973 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4974 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4976 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4978 if (PACKET_remaining(cipher_suites
) == 0) {
4979 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4980 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4984 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4985 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4986 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4987 *al
= SSL_AD_DECODE_ERROR
;
4991 sk
= sk_SSL_CIPHER_new_null();
4992 scsvs
= sk_SSL_CIPHER_new_null();
4993 if (sk
== NULL
|| scsvs
== NULL
) {
4994 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4995 *al
= SSL_AD_INTERNAL_ERROR
;
4999 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5001 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5002 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5003 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5005 if (sslv2format
&& cipher
[0] != '\0')
5008 /* For SSLv2-compat, ignore leading 0-byte. */
5009 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5011 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5012 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5013 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5014 *al
= SSL_AD_INTERNAL_ERROR
;
5019 if (PACKET_remaining(cipher_suites
) > 0) {
5020 *al
= SSL_AD_DECODE_ERROR
;
5021 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5028 sk_SSL_CIPHER_free(sk
);
5029 if (scsvs_out
!= NULL
)
5032 sk_SSL_CIPHER_free(scsvs
);
5035 sk_SSL_CIPHER_free(sk
);
5036 sk_SSL_CIPHER_free(scsvs
);
5040 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5042 ctx
->max_early_data
= max_early_data
;
5047 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5049 return ctx
->max_early_data
;
5052 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5054 s
->max_early_data
= max_early_data
;
5059 uint32_t SSL_get_max_early_data(const SSL
*s
)
5061 return s
->max_early_data
;