2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
11 /* ====================================================================
12 * Copyright 2005 Nokia. All rights reserved.
14 * The portions of the attached software ("Contribution") is developed by
15 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
18 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
19 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
20 * support (see RFC 4279) to OpenSSL.
22 * No patent licenses or other rights except those expressly stated in
23 * the OpenSSL open source license shall be deemed granted or received
24 * expressly, by implication, estoppel, or otherwise.
26 * No assurances are provided by Nokia that the Contribution does not
27 * infringe the patent or other intellectual property rights of any third
28 * party or that the license provides you with all the necessary rights
29 * to make use of the Contribution.
31 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
32 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
33 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
34 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
40 #include <openssl/objects.h>
41 #include <openssl/lhash.h>
42 #include <openssl/x509v3.h>
43 #include <openssl/rand.h>
44 #include <openssl/ocsp.h>
45 #include <openssl/dh.h>
46 #include <openssl/engine.h>
47 #include <openssl/async.h>
48 #include <openssl/ct.h>
50 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
52 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
54 * evil casts, but these functions are only called if there's a library
57 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
58 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
59 ssl_undefined_function
,
60 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
61 ssl_undefined_function
,
62 (int (*)(SSL
*, int))ssl_undefined_function
,
63 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
64 ssl_undefined_function
,
65 NULL
, /* client_finished_label */
66 0, /* client_finished_label_len */
67 NULL
, /* server_finished_label */
68 0, /* server_finished_label_len */
69 (int (*)(int))ssl_undefined_function
,
70 (int (*)(SSL
*, unsigned char *, size_t, const char *,
71 size_t, const unsigned char *, size_t,
72 int use_context
))ssl_undefined_function
,
75 struct ssl_async_args
{
79 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
81 int (*func_read
) (SSL
*, void *, size_t, size_t *);
82 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
83 int (*func_other
) (SSL
*);
93 DANETLS_MATCHING_FULL
, 0, NID_undef
96 DANETLS_MATCHING_2256
, 1, NID_sha256
99 DANETLS_MATCHING_2512
, 2, NID_sha512
103 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
105 const EVP_MD
**mdevp
;
107 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
108 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
111 if (dctx
->mdevp
!= NULL
)
114 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
115 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
117 if (mdord
== NULL
|| mdevp
== NULL
) {
120 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
124 /* Install default entries */
125 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
128 if (dane_mds
[i
].nid
== NID_undef
||
129 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
131 mdevp
[dane_mds
[i
].mtype
] = md
;
132 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
142 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
144 OPENSSL_free(dctx
->mdevp
);
147 OPENSSL_free(dctx
->mdord
);
152 static void tlsa_free(danetls_record
*t
)
156 OPENSSL_free(t
->data
);
157 EVP_PKEY_free(t
->spki
);
161 static void dane_final(SSL_DANE
*dane
)
163 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
166 sk_X509_pop_free(dane
->certs
, X509_free
);
169 X509_free(dane
->mcert
);
177 * dane_copy - Copy dane configuration, sans verification state.
179 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
184 if (!DANETLS_ENABLED(&from
->dane
))
187 dane_final(&to
->dane
);
188 to
->dane
.flags
= from
->dane
.flags
;
189 to
->dane
.dctx
= &to
->ctx
->dane
;
190 to
->dane
.trecs
= sk_danetls_record_new_null();
192 if (to
->dane
.trecs
== NULL
) {
193 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
197 num
= sk_danetls_record_num(from
->dane
.trecs
);
198 for (i
= 0; i
< num
; ++i
) {
199 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
201 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
202 t
->data
, t
->dlen
) <= 0)
208 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
209 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
213 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
214 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
218 if (mtype
> dctx
->mdmax
) {
219 const EVP_MD
**mdevp
;
221 int n
= ((int)mtype
) + 1;
223 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
225 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
230 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
232 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
237 /* Zero-fill any gaps */
238 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
246 dctx
->mdevp
[mtype
] = md
;
247 /* Coerce ordinal of disabled matching types to 0 */
248 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
253 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
255 if (mtype
> dane
->dctx
->mdmax
)
257 return dane
->dctx
->mdevp
[mtype
];
260 static int dane_tlsa_add(SSL_DANE
*dane
,
263 uint8_t mtype
, unsigned char *data
, size_t dlen
)
266 const EVP_MD
*md
= NULL
;
267 int ilen
= (int)dlen
;
271 if (dane
->trecs
== NULL
) {
272 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
276 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
281 if (usage
> DANETLS_USAGE_LAST
) {
282 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
286 if (selector
> DANETLS_SELECTOR_LAST
) {
287 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
291 if (mtype
!= DANETLS_MATCHING_FULL
) {
292 md
= tlsa_md_get(dane
, mtype
);
294 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
299 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
300 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
304 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
308 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
309 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
314 t
->selector
= selector
;
316 t
->data
= OPENSSL_malloc(dlen
);
317 if (t
->data
== NULL
) {
319 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
322 memcpy(t
->data
, data
, dlen
);
325 /* Validate and cache full certificate or public key */
326 if (mtype
== DANETLS_MATCHING_FULL
) {
327 const unsigned char *p
= data
;
329 EVP_PKEY
*pkey
= NULL
;
332 case DANETLS_SELECTOR_CERT
:
333 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
334 dlen
!= (size_t)(p
- data
)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
339 if (X509_get0_pubkey(cert
) == NULL
) {
341 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
345 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
351 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
352 * records that contain full certificates of trust-anchors that are
353 * not present in the wire chain. For usage PKIX-TA(0), we augment
354 * the chain with untrusted Full(0) certificates from DNS, in case
355 * they are missing from the chain.
357 if ((dane
->certs
== NULL
&&
358 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
359 !sk_X509_push(dane
->certs
, cert
)) {
360 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
367 case DANETLS_SELECTOR_SPKI
:
368 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
369 dlen
!= (size_t)(p
- data
)) {
371 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
376 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
377 * records that contain full bare keys of trust-anchors that are
378 * not present in the wire chain.
380 if (usage
== DANETLS_USAGE_DANE_TA
)
389 * Find the right insertion point for the new record.
391 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
392 * they can be processed first, as they require no chain building, and no
393 * expiration or hostname checks. Because DANE-EE(3) is numerically
394 * largest, this is accomplished via descending sort by "usage".
396 * We also sort in descending order by matching ordinal to simplify
397 * the implementation of digest agility in the verification code.
399 * The choice of order for the selector is not significant, so we
400 * use the same descending order for consistency.
402 num
= sk_danetls_record_num(dane
->trecs
);
403 for (i
= 0; i
< num
; ++i
) {
404 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
406 if (rec
->usage
> usage
)
408 if (rec
->usage
< usage
)
410 if (rec
->selector
> selector
)
412 if (rec
->selector
< selector
)
414 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
419 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
421 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
424 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
429 static void clear_ciphers(SSL
*s
)
431 /* clear the current cipher */
432 ssl_clear_cipher_ctx(s
);
433 ssl_clear_hash_ctx(&s
->read_hash
);
434 ssl_clear_hash_ctx(&s
->write_hash
);
437 int SSL_clear(SSL
*s
)
439 if (s
->method
== NULL
) {
440 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
444 if (ssl_clear_bad_session(s
)) {
445 SSL_SESSION_free(s
->session
);
453 if (s
->renegotiate
) {
454 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
458 ossl_statem_clear(s
);
460 s
->version
= s
->method
->version
;
461 s
->client_version
= s
->version
;
462 s
->rwstate
= SSL_NOTHING
;
464 BUF_MEM_free(s
->init_buf
);
469 s
->key_update
= SSL_KEY_UPDATE_NONE
;
471 /* Reset DANE verification result state */
474 X509_free(s
->dane
.mcert
);
475 s
->dane
.mcert
= NULL
;
476 s
->dane
.mtlsa
= NULL
;
478 /* Clear the verification result peername */
479 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
482 * Check to see if we were changed into a different method, if so, revert
483 * back if we are not doing session-id reuse.
485 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
486 && (s
->method
!= s
->ctx
->method
)) {
487 s
->method
->ssl_free(s
);
488 s
->method
= s
->ctx
->method
;
489 if (!s
->method
->ssl_new(s
))
492 if (!s
->method
->ssl_clear(s
))
496 RECORD_LAYER_clear(&s
->rlayer
);
501 /** Used to change an SSL_CTXs default SSL method type */
502 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
504 STACK_OF(SSL_CIPHER
) *sk
;
508 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
509 &(ctx
->cipher_list_by_id
),
510 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
511 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
512 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
518 SSL
*SSL_new(SSL_CTX
*ctx
)
523 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
526 if (ctx
->method
== NULL
) {
527 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
531 s
= OPENSSL_zalloc(sizeof(*s
));
535 s
->lock
= CRYPTO_THREAD_lock_new();
536 if (s
->lock
== NULL
) {
537 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
542 RECORD_LAYER_init(&s
->rlayer
, s
);
544 s
->options
= ctx
->options
;
545 s
->dane
.flags
= ctx
->dane
.flags
;
546 s
->min_proto_version
= ctx
->min_proto_version
;
547 s
->max_proto_version
= ctx
->max_proto_version
;
549 s
->max_cert_list
= ctx
->max_cert_list
;
551 s
->max_early_data
= ctx
->max_early_data
;
554 * Earlier library versions used to copy the pointer to the CERT, not
555 * its contents; only when setting new parameters for the per-SSL
556 * copy, ssl_cert_new would be called (and the direct reference to
557 * the per-SSL_CTX settings would be lost, but those still were
558 * indirectly accessed for various purposes, and for that reason they
559 * used to be known as s->ctx->default_cert). Now we don't look at the
560 * SSL_CTX's CERT after having duplicated it once.
562 s
->cert
= ssl_cert_dup(ctx
->cert
);
566 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
567 s
->msg_callback
= ctx
->msg_callback
;
568 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
569 s
->verify_mode
= ctx
->verify_mode
;
570 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
571 s
->record_padding_cb
= ctx
->record_padding_cb
;
572 s
->record_padding_arg
= ctx
->record_padding_arg
;
573 s
->block_padding
= ctx
->block_padding
;
574 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
575 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
577 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
578 s
->verify_callback
= ctx
->default_verify_callback
;
579 s
->generate_session_id
= ctx
->generate_session_id
;
581 s
->param
= X509_VERIFY_PARAM_new();
582 if (s
->param
== NULL
)
584 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
585 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
586 s
->max_send_fragment
= ctx
->max_send_fragment
;
587 s
->split_send_fragment
= ctx
->split_send_fragment
;
588 s
->max_pipelines
= ctx
->max_pipelines
;
589 if (s
->max_pipelines
> 1)
590 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
591 if (ctx
->default_read_buf_len
> 0)
592 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
597 s
->ext
.debug_arg
= NULL
;
598 s
->ext
.ticket_expected
= 0;
599 s
->ext
.status_type
= ctx
->ext
.status_type
;
600 s
->ext
.status_expected
= 0;
601 s
->ext
.ocsp
.ids
= NULL
;
602 s
->ext
.ocsp
.exts
= NULL
;
603 s
->ext
.ocsp
.resp
= NULL
;
604 s
->ext
.ocsp
.resp_len
= 0;
606 s
->session_ctx
= ctx
;
607 #ifndef OPENSSL_NO_EC
608 if (ctx
->ext
.ecpointformats
) {
609 s
->ext
.ecpointformats
=
610 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
611 ctx
->ext
.ecpointformats_len
);
612 if (!s
->ext
.ecpointformats
)
614 s
->ext
.ecpointformats_len
=
615 ctx
->ext
.ecpointformats_len
;
617 if (ctx
->ext
.supportedgroups
) {
618 s
->ext
.supportedgroups
=
619 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
620 ctx
->ext
.supportedgroups_len
);
621 if (!s
->ext
.supportedgroups
)
623 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
626 #ifndef OPENSSL_NO_NEXTPROTONEG
630 if (s
->ctx
->ext
.alpn
) {
631 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
632 if (s
->ext
.alpn
== NULL
)
634 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
635 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
638 s
->verified_chain
= NULL
;
639 s
->verify_result
= X509_V_OK
;
641 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
642 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
644 s
->method
= ctx
->method
;
646 s
->key_update
= SSL_KEY_UPDATE_NONE
;
648 if (!s
->method
->ssl_new(s
))
651 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
656 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
659 #ifndef OPENSSL_NO_PSK
660 s
->psk_client_callback
= ctx
->psk_client_callback
;
661 s
->psk_server_callback
= ctx
->psk_server_callback
;
666 #ifndef OPENSSL_NO_CT
667 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
668 ctx
->ct_validation_callback_arg
))
675 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
679 int SSL_is_dtls(const SSL
*s
)
681 return SSL_IS_DTLS(s
) ? 1 : 0;
684 int SSL_up_ref(SSL
*s
)
688 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
691 REF_PRINT_COUNT("SSL", s
);
692 REF_ASSERT_ISNT(i
< 2);
693 return ((i
> 1) ? 1 : 0);
696 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
697 unsigned int sid_ctx_len
)
699 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
700 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
701 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
704 ctx
->sid_ctx_length
= sid_ctx_len
;
705 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
710 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
711 unsigned int sid_ctx_len
)
713 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
714 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
715 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
718 ssl
->sid_ctx_length
= sid_ctx_len
;
719 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
724 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
726 CRYPTO_THREAD_write_lock(ctx
->lock
);
727 ctx
->generate_session_id
= cb
;
728 CRYPTO_THREAD_unlock(ctx
->lock
);
732 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
734 CRYPTO_THREAD_write_lock(ssl
->lock
);
735 ssl
->generate_session_id
= cb
;
736 CRYPTO_THREAD_unlock(ssl
->lock
);
740 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
744 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
745 * we can "construct" a session to give us the desired check - i.e. to
746 * find if there's a session in the hash table that would conflict with
747 * any new session built out of this id/id_len and the ssl_version in use
752 if (id_len
> sizeof r
.session_id
)
755 r
.ssl_version
= ssl
->version
;
756 r
.session_id_length
= id_len
;
757 memcpy(r
.session_id
, id
, id_len
);
759 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
760 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
761 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
765 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
767 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
770 int SSL_set_purpose(SSL
*s
, int purpose
)
772 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
775 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
777 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
780 int SSL_set_trust(SSL
*s
, int trust
)
782 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
785 int SSL_set1_host(SSL
*s
, const char *hostname
)
787 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
790 int SSL_add1_host(SSL
*s
, const char *hostname
)
792 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
795 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
797 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
800 const char *SSL_get0_peername(SSL
*s
)
802 return X509_VERIFY_PARAM_get0_peername(s
->param
);
805 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
807 return dane_ctx_enable(&ctx
->dane
);
810 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
812 unsigned long orig
= ctx
->dane
.flags
;
814 ctx
->dane
.flags
|= flags
;
818 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
820 unsigned long orig
= ctx
->dane
.flags
;
822 ctx
->dane
.flags
&= ~flags
;
826 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
828 SSL_DANE
*dane
= &s
->dane
;
830 if (s
->ctx
->dane
.mdmax
== 0) {
831 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
834 if (dane
->trecs
!= NULL
) {
835 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
840 * Default SNI name. This rejects empty names, while set1_host below
841 * accepts them and disables host name checks. To avoid side-effects with
842 * invalid input, set the SNI name first.
844 if (s
->ext
.hostname
== NULL
) {
845 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
846 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
851 /* Primary RFC6125 reference identifier */
852 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
853 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
859 dane
->dctx
= &s
->ctx
->dane
;
860 dane
->trecs
= sk_danetls_record_new_null();
862 if (dane
->trecs
== NULL
) {
863 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
869 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
871 unsigned long orig
= ssl
->dane
.flags
;
873 ssl
->dane
.flags
|= flags
;
877 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
879 unsigned long orig
= ssl
->dane
.flags
;
881 ssl
->dane
.flags
&= ~flags
;
885 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
887 SSL_DANE
*dane
= &s
->dane
;
889 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
893 *mcert
= dane
->mcert
;
895 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
900 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
901 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
903 SSL_DANE
*dane
= &s
->dane
;
905 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
909 *usage
= dane
->mtlsa
->usage
;
911 *selector
= dane
->mtlsa
->selector
;
913 *mtype
= dane
->mtlsa
->mtype
;
915 *data
= dane
->mtlsa
->data
;
917 *dlen
= dane
->mtlsa
->dlen
;
922 SSL_DANE
*SSL_get0_dane(SSL
*s
)
927 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
928 uint8_t mtype
, unsigned char *data
, size_t dlen
)
930 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
933 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
936 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
939 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
941 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
944 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
946 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
949 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
954 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
959 void SSL_certs_clear(SSL
*s
)
961 ssl_cert_clear_certs(s
->cert
);
964 void SSL_free(SSL
*s
)
971 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
972 REF_PRINT_COUNT("SSL", s
);
975 REF_ASSERT_ISNT(i
< 0);
977 X509_VERIFY_PARAM_free(s
->param
);
978 dane_final(&s
->dane
);
979 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
981 /* Ignore return value */
982 ssl_free_wbio_buffer(s
);
984 BIO_free_all(s
->wbio
);
985 BIO_free_all(s
->rbio
);
987 BUF_MEM_free(s
->init_buf
);
989 /* add extra stuff */
990 sk_SSL_CIPHER_free(s
->cipher_list
);
991 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
993 /* Make the next call work :-) */
994 if (s
->session
!= NULL
) {
995 ssl_clear_bad_session(s
);
996 SSL_SESSION_free(s
->session
);
1001 ssl_cert_free(s
->cert
);
1002 /* Free up if allocated */
1004 OPENSSL_free(s
->ext
.hostname
);
1005 SSL_CTX_free(s
->session_ctx
);
1006 #ifndef OPENSSL_NO_EC
1007 OPENSSL_free(s
->ext
.ecpointformats
);
1008 OPENSSL_free(s
->ext
.supportedgroups
);
1009 #endif /* OPENSSL_NO_EC */
1010 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1011 #ifndef OPENSSL_NO_OCSP
1012 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1014 #ifndef OPENSSL_NO_CT
1015 SCT_LIST_free(s
->scts
);
1016 OPENSSL_free(s
->ext
.scts
);
1018 OPENSSL_free(s
->ext
.ocsp
.resp
);
1019 OPENSSL_free(s
->ext
.alpn
);
1020 OPENSSL_free(s
->ext
.tls13_cookie
);
1021 OPENSSL_free(s
->clienthello
);
1023 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1025 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1027 if (s
->method
!= NULL
)
1028 s
->method
->ssl_free(s
);
1030 RECORD_LAYER_release(&s
->rlayer
);
1032 SSL_CTX_free(s
->ctx
);
1034 ASYNC_WAIT_CTX_free(s
->waitctx
);
1036 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1037 OPENSSL_free(s
->ext
.npn
);
1040 #ifndef OPENSSL_NO_SRTP
1041 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1044 CRYPTO_THREAD_lock_free(s
->lock
);
1049 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1051 BIO_free_all(s
->rbio
);
1055 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1058 * If the output buffering BIO is still in place, remove it
1060 if (s
->bbio
!= NULL
)
1061 s
->wbio
= BIO_pop(s
->wbio
);
1063 BIO_free_all(s
->wbio
);
1066 /* Re-attach |bbio| to the new |wbio|. */
1067 if (s
->bbio
!= NULL
)
1068 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1071 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1074 * For historical reasons, this function has many different cases in
1075 * ownership handling.
1078 /* If nothing has changed, do nothing */
1079 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1083 * If the two arguments are equal then one fewer reference is granted by the
1084 * caller than we want to take
1086 if (rbio
!= NULL
&& rbio
== wbio
)
1090 * If only the wbio is changed only adopt one reference.
1092 if (rbio
== SSL_get_rbio(s
)) {
1093 SSL_set0_wbio(s
, wbio
);
1097 * There is an asymmetry here for historical reasons. If only the rbio is
1098 * changed AND the rbio and wbio were originally different, then we only
1099 * adopt one reference.
1101 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1102 SSL_set0_rbio(s
, rbio
);
1106 /* Otherwise, adopt both references. */
1107 SSL_set0_rbio(s
, rbio
);
1108 SSL_set0_wbio(s
, wbio
);
1111 BIO
*SSL_get_rbio(const SSL
*s
)
1116 BIO
*SSL_get_wbio(const SSL
*s
)
1118 if (s
->bbio
!= NULL
) {
1120 * If |bbio| is active, the true caller-configured BIO is its
1123 return BIO_next(s
->bbio
);
1128 int SSL_get_fd(const SSL
*s
)
1130 return SSL_get_rfd(s
);
1133 int SSL_get_rfd(const SSL
*s
)
1138 b
= SSL_get_rbio(s
);
1139 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1141 BIO_get_fd(r
, &ret
);
1145 int SSL_get_wfd(const SSL
*s
)
1150 b
= SSL_get_wbio(s
);
1151 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1153 BIO_get_fd(r
, &ret
);
1157 #ifndef OPENSSL_NO_SOCK
1158 int SSL_set_fd(SSL
*s
, int fd
)
1163 bio
= BIO_new(BIO_s_socket());
1166 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1169 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1170 SSL_set_bio(s
, bio
, bio
);
1176 int SSL_set_wfd(SSL
*s
, int fd
)
1178 BIO
*rbio
= SSL_get_rbio(s
);
1180 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1181 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1182 BIO
*bio
= BIO_new(BIO_s_socket());
1185 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1188 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1189 SSL_set0_wbio(s
, bio
);
1192 SSL_set0_wbio(s
, rbio
);
1197 int SSL_set_rfd(SSL
*s
, int fd
)
1199 BIO
*wbio
= SSL_get_wbio(s
);
1201 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1202 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1203 BIO
*bio
= BIO_new(BIO_s_socket());
1206 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1209 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1210 SSL_set0_rbio(s
, bio
);
1213 SSL_set0_rbio(s
, wbio
);
1220 /* return length of latest Finished message we sent, copy to 'buf' */
1221 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1225 if (s
->s3
!= NULL
) {
1226 ret
= s
->s3
->tmp
.finish_md_len
;
1229 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1234 /* return length of latest Finished message we expected, copy to 'buf' */
1235 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1239 if (s
->s3
!= NULL
) {
1240 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1243 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1248 int SSL_get_verify_mode(const SSL
*s
)
1250 return (s
->verify_mode
);
1253 int SSL_get_verify_depth(const SSL
*s
)
1255 return X509_VERIFY_PARAM_get_depth(s
->param
);
1258 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1259 return (s
->verify_callback
);
1262 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1264 return (ctx
->verify_mode
);
1267 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1269 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1272 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1273 return (ctx
->default_verify_callback
);
1276 void SSL_set_verify(SSL
*s
, int mode
,
1277 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1279 s
->verify_mode
= mode
;
1280 if (callback
!= NULL
)
1281 s
->verify_callback
= callback
;
1284 void SSL_set_verify_depth(SSL
*s
, int depth
)
1286 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1289 void SSL_set_read_ahead(SSL
*s
, int yes
)
1291 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1294 int SSL_get_read_ahead(const SSL
*s
)
1296 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1299 int SSL_pending(const SSL
*s
)
1301 size_t pending
= s
->method
->ssl_pending(s
);
1304 * SSL_pending cannot work properly if read-ahead is enabled
1305 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1306 * impossible to fix since SSL_pending cannot report errors that may be
1307 * observed while scanning the new data. (Note that SSL_pending() is
1308 * often used as a boolean value, so we'd better not return -1.)
1310 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1311 * we just return INT_MAX.
1313 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1316 int SSL_has_pending(const SSL
*s
)
1319 * Similar to SSL_pending() but returns a 1 to indicate that we have
1320 * unprocessed data available or 0 otherwise (as opposed to the number of
1321 * bytes available). Unlike SSL_pending() this will take into account
1322 * read_ahead data. A 1 return simply indicates that we have unprocessed
1323 * data. That data may not result in any application data, or we may fail
1324 * to parse the records for some reason.
1326 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1329 return RECORD_LAYER_read_pending(&s
->rlayer
);
1332 X509
*SSL_get_peer_certificate(const SSL
*s
)
1336 if ((s
== NULL
) || (s
->session
== NULL
))
1339 r
= s
->session
->peer
;
1349 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1353 if ((s
== NULL
) || (s
->session
== NULL
))
1356 r
= s
->session
->peer_chain
;
1359 * If we are a client, cert_chain includes the peer's own certificate; if
1360 * we are a server, it does not.
1367 * Now in theory, since the calling process own 't' it should be safe to
1368 * modify. We need to be able to read f without being hassled
1370 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1373 /* Do we need to to SSL locking? */
1374 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1379 * what if we are setup for one protocol version but want to talk another
1381 if (t
->method
!= f
->method
) {
1382 t
->method
->ssl_free(t
);
1383 t
->method
= f
->method
;
1384 if (t
->method
->ssl_new(t
) == 0)
1388 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1389 ssl_cert_free(t
->cert
);
1391 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1398 /* Fix this so it checks all the valid key/cert options */
1399 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1401 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1402 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1405 if (ctx
->cert
->key
->privatekey
== NULL
) {
1406 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1409 return (X509_check_private_key
1410 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1413 /* Fix this function so that it takes an optional type parameter */
1414 int SSL_check_private_key(const SSL
*ssl
)
1417 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1420 if (ssl
->cert
->key
->x509
== NULL
) {
1421 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1424 if (ssl
->cert
->key
->privatekey
== NULL
) {
1425 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1428 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1429 ssl
->cert
->key
->privatekey
));
1432 int SSL_waiting_for_async(SSL
*s
)
1440 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1442 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1446 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1449 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1450 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1452 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1456 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1460 int SSL_accept(SSL
*s
)
1462 if (s
->handshake_func
== NULL
) {
1463 /* Not properly initialized yet */
1464 SSL_set_accept_state(s
);
1467 return SSL_do_handshake(s
);
1470 int SSL_connect(SSL
*s
)
1472 if (s
->handshake_func
== NULL
) {
1473 /* Not properly initialized yet */
1474 SSL_set_connect_state(s
);
1477 return SSL_do_handshake(s
);
1480 long SSL_get_default_timeout(const SSL
*s
)
1482 return (s
->method
->get_timeout());
1485 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1486 int (*func
) (void *))
1489 if (s
->waitctx
== NULL
) {
1490 s
->waitctx
= ASYNC_WAIT_CTX_new();
1491 if (s
->waitctx
== NULL
)
1494 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1495 sizeof(struct ssl_async_args
))) {
1497 s
->rwstate
= SSL_NOTHING
;
1498 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1501 s
->rwstate
= SSL_ASYNC_PAUSED
;
1504 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1510 s
->rwstate
= SSL_NOTHING
;
1511 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1512 /* Shouldn't happen */
1517 static int ssl_io_intern(void *vargs
)
1519 struct ssl_async_args
*args
;
1524 args
= (struct ssl_async_args
*)vargs
;
1528 switch (args
->type
) {
1530 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1532 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1534 return args
->f
.func_other(s
);
1539 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1541 if (s
->handshake_func
== NULL
) {
1542 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1546 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1547 s
->rwstate
= SSL_NOTHING
;
1551 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1552 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1553 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1557 * If we are a client and haven't received the ServerHello etc then we
1560 ossl_statem_check_finish_init(s
, 0);
1562 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1563 struct ssl_async_args args
;
1569 args
.type
= READFUNC
;
1570 args
.f
.func_read
= s
->method
->ssl_read
;
1572 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1573 *readbytes
= s
->asyncrw
;
1576 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1580 int SSL_read(SSL
*s
, void *buf
, int num
)
1586 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1590 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1593 * The cast is safe here because ret should be <= INT_MAX because num is
1597 ret
= (int)readbytes
;
1602 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1604 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1611 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1616 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1617 return SSL_READ_EARLY_DATA_ERROR
;
1620 switch (s
->early_data_state
) {
1621 case SSL_EARLY_DATA_NONE
:
1622 if (!SSL_in_before(s
)) {
1623 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1624 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1625 return SSL_READ_EARLY_DATA_ERROR
;
1629 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1630 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1631 ret
= SSL_accept(s
);
1634 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1635 return SSL_READ_EARLY_DATA_ERROR
;
1639 case SSL_EARLY_DATA_READ_RETRY
:
1640 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1641 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1642 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1644 * State machine will update early_data_state to
1645 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1648 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1649 != SSL_EARLY_DATA_FINISHED_READING
)) {
1650 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1651 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1652 : SSL_READ_EARLY_DATA_ERROR
;
1655 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1658 return SSL_READ_EARLY_DATA_FINISH
;
1661 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1662 return SSL_READ_EARLY_DATA_ERROR
;
1666 int SSL_get_early_data_status(const SSL
*s
)
1668 return s
->ext
.early_data
;
1671 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1673 if (s
->handshake_func
== NULL
) {
1674 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1678 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1681 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1682 struct ssl_async_args args
;
1688 args
.type
= READFUNC
;
1689 args
.f
.func_read
= s
->method
->ssl_peek
;
1691 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1692 *readbytes
= s
->asyncrw
;
1695 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1699 int SSL_peek(SSL
*s
, void *buf
, int num
)
1705 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1709 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1712 * The cast is safe here because ret should be <= INT_MAX because num is
1716 ret
= (int)readbytes
;
1722 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1724 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1731 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1733 if (s
->handshake_func
== NULL
) {
1734 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1738 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1739 s
->rwstate
= SSL_NOTHING
;
1740 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1744 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1745 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1746 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1747 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1750 /* If we are a client and haven't sent the Finished we better do that */
1751 ossl_statem_check_finish_init(s
, 1);
1753 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1755 struct ssl_async_args args
;
1758 args
.buf
= (void *)buf
;
1760 args
.type
= WRITEFUNC
;
1761 args
.f
.func_write
= s
->method
->ssl_write
;
1763 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1764 *written
= s
->asyncrw
;
1767 return s
->method
->ssl_write(s
, buf
, num
, written
);
1771 int SSL_write(SSL
*s
, const void *buf
, int num
)
1777 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1781 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1784 * The cast is safe here because ret should be <= INT_MAX because num is
1793 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1795 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1802 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1804 int ret
, early_data_state
;
1806 switch (s
->early_data_state
) {
1807 case SSL_EARLY_DATA_NONE
:
1809 || !SSL_in_before(s
)
1810 || s
->session
== NULL
1811 || s
->session
->ext
.max_early_data
== 0) {
1812 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1813 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1818 case SSL_EARLY_DATA_CONNECT_RETRY
:
1819 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1820 ret
= SSL_connect(s
);
1823 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1828 case SSL_EARLY_DATA_WRITE_RETRY
:
1829 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1830 ret
= SSL_write_ex(s
, buf
, num
, written
);
1831 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1834 case SSL_EARLY_DATA_FINISHED_READING
:
1835 case SSL_EARLY_DATA_READ_RETRY
:
1836 early_data_state
= s
->early_data_state
;
1837 /* We are a server writing to an unauthenticated client */
1838 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1839 ret
= SSL_write_ex(s
, buf
, num
, written
);
1840 s
->early_data_state
= early_data_state
;
1844 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1849 int SSL_shutdown(SSL
*s
)
1852 * Note that this function behaves differently from what one might
1853 * expect. Return values are 0 for no success (yet), 1 for success; but
1854 * calling it once is usually not enough, even if blocking I/O is used
1855 * (see ssl3_shutdown).
1858 if (s
->handshake_func
== NULL
) {
1859 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1863 if (!SSL_in_init(s
)) {
1864 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1865 struct ssl_async_args args
;
1868 args
.type
= OTHERFUNC
;
1869 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1871 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1873 return s
->method
->ssl_shutdown(s
);
1876 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1881 int SSL_key_update(SSL
*s
, int updatetype
)
1884 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1885 * negotiated, and that it is appropriate to call SSL_key_update() instead
1886 * of SSL_renegotiate().
1888 if (!SSL_IS_TLS13(s
)) {
1889 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1893 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1894 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1895 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1899 if (!SSL_is_init_finished(s
)) {
1900 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1904 ossl_statem_set_in_init(s
, 1);
1905 s
->key_update
= updatetype
;
1909 int SSL_get_key_update_type(SSL
*s
)
1911 return s
->key_update
;
1914 int SSL_renegotiate(SSL
*s
)
1916 if (SSL_IS_TLS13(s
)) {
1917 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1921 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1922 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
1929 return (s
->method
->ssl_renegotiate(s
));
1932 int SSL_renegotiate_abbreviated(SSL
*s
)
1934 if (SSL_IS_TLS13(s
)) {
1935 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
1939 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1940 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
1947 return (s
->method
->ssl_renegotiate(s
));
1950 int SSL_renegotiate_pending(SSL
*s
)
1953 * becomes true when negotiation is requested; false again once a
1954 * handshake has finished
1956 return (s
->renegotiate
!= 0);
1959 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1964 case SSL_CTRL_GET_READ_AHEAD
:
1965 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1966 case SSL_CTRL_SET_READ_AHEAD
:
1967 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1968 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1971 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1972 s
->msg_callback_arg
= parg
;
1976 return (s
->mode
|= larg
);
1977 case SSL_CTRL_CLEAR_MODE
:
1978 return (s
->mode
&= ~larg
);
1979 case SSL_CTRL_GET_MAX_CERT_LIST
:
1980 return (long)(s
->max_cert_list
);
1981 case SSL_CTRL_SET_MAX_CERT_LIST
:
1984 l
= (long)s
->max_cert_list
;
1985 s
->max_cert_list
= (size_t)larg
;
1987 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1988 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1990 s
->max_send_fragment
= larg
;
1991 if (s
->max_send_fragment
< s
->split_send_fragment
)
1992 s
->split_send_fragment
= s
->max_send_fragment
;
1994 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1995 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1997 s
->split_send_fragment
= larg
;
1999 case SSL_CTRL_SET_MAX_PIPELINES
:
2000 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2002 s
->max_pipelines
= larg
;
2004 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2006 case SSL_CTRL_GET_RI_SUPPORT
:
2008 return s
->s3
->send_connection_binding
;
2011 case SSL_CTRL_CERT_FLAGS
:
2012 return (s
->cert
->cert_flags
|= larg
);
2013 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2014 return (s
->cert
->cert_flags
&= ~larg
);
2016 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2018 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2020 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2021 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2023 return TLS_CIPHER_LEN
;
2025 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2026 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2028 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2032 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2033 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2034 &s
->min_proto_version
);
2035 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2036 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2037 &s
->max_proto_version
);
2039 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2043 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2046 case SSL_CTRL_SET_MSG_CALLBACK
:
2047 s
->msg_callback
= (void (*)
2048 (int write_p
, int version
, int content_type
,
2049 const void *buf
, size_t len
, SSL
*ssl
,
2054 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2058 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2060 return ctx
->sessions
;
2063 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2066 /* For some cases with ctx == NULL perform syntax checks */
2069 #ifndef OPENSSL_NO_EC
2070 case SSL_CTRL_SET_GROUPS_LIST
:
2071 return tls1_set_groups_list(NULL
, NULL
, parg
);
2073 case SSL_CTRL_SET_SIGALGS_LIST
:
2074 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2075 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2082 case SSL_CTRL_GET_READ_AHEAD
:
2083 return (ctx
->read_ahead
);
2084 case SSL_CTRL_SET_READ_AHEAD
:
2085 l
= ctx
->read_ahead
;
2086 ctx
->read_ahead
= larg
;
2089 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2090 ctx
->msg_callback_arg
= parg
;
2093 case SSL_CTRL_GET_MAX_CERT_LIST
:
2094 return (long)(ctx
->max_cert_list
);
2095 case SSL_CTRL_SET_MAX_CERT_LIST
:
2098 l
= (long)ctx
->max_cert_list
;
2099 ctx
->max_cert_list
= (size_t)larg
;
2102 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2105 l
= (long)ctx
->session_cache_size
;
2106 ctx
->session_cache_size
= (size_t)larg
;
2108 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2109 return (long)(ctx
->session_cache_size
);
2110 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2111 l
= ctx
->session_cache_mode
;
2112 ctx
->session_cache_mode
= larg
;
2114 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2115 return (ctx
->session_cache_mode
);
2117 case SSL_CTRL_SESS_NUMBER
:
2118 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2119 case SSL_CTRL_SESS_CONNECT
:
2120 return (ctx
->stats
.sess_connect
);
2121 case SSL_CTRL_SESS_CONNECT_GOOD
:
2122 return (ctx
->stats
.sess_connect_good
);
2123 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2124 return (ctx
->stats
.sess_connect_renegotiate
);
2125 case SSL_CTRL_SESS_ACCEPT
:
2126 return (ctx
->stats
.sess_accept
);
2127 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2128 return (ctx
->stats
.sess_accept_good
);
2129 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2130 return (ctx
->stats
.sess_accept_renegotiate
);
2131 case SSL_CTRL_SESS_HIT
:
2132 return (ctx
->stats
.sess_hit
);
2133 case SSL_CTRL_SESS_CB_HIT
:
2134 return (ctx
->stats
.sess_cb_hit
);
2135 case SSL_CTRL_SESS_MISSES
:
2136 return (ctx
->stats
.sess_miss
);
2137 case SSL_CTRL_SESS_TIMEOUTS
:
2138 return (ctx
->stats
.sess_timeout
);
2139 case SSL_CTRL_SESS_CACHE_FULL
:
2140 return (ctx
->stats
.sess_cache_full
);
2142 return (ctx
->mode
|= larg
);
2143 case SSL_CTRL_CLEAR_MODE
:
2144 return (ctx
->mode
&= ~larg
);
2145 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2146 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2148 ctx
->max_send_fragment
= larg
;
2149 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2150 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2152 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2153 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2155 ctx
->split_send_fragment
= larg
;
2157 case SSL_CTRL_SET_MAX_PIPELINES
:
2158 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2160 ctx
->max_pipelines
= larg
;
2162 case SSL_CTRL_CERT_FLAGS
:
2163 return (ctx
->cert
->cert_flags
|= larg
);
2164 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2165 return (ctx
->cert
->cert_flags
&= ~larg
);
2166 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2167 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2168 &ctx
->min_proto_version
);
2169 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2170 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2171 &ctx
->max_proto_version
);
2173 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2177 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2180 case SSL_CTRL_SET_MSG_CALLBACK
:
2181 ctx
->msg_callback
= (void (*)
2182 (int write_p
, int version
, int content_type
,
2183 const void *buf
, size_t len
, SSL
*ssl
,
2188 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2192 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2201 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2202 const SSL_CIPHER
*const *bp
)
2204 if ((*ap
)->id
> (*bp
)->id
)
2206 if ((*ap
)->id
< (*bp
)->id
)
2211 /** return a STACK of the ciphers available for the SSL and in order of
2213 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2216 if (s
->cipher_list
!= NULL
) {
2217 return (s
->cipher_list
);
2218 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2219 return (s
->ctx
->cipher_list
);
2225 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2227 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2229 return s
->session
->ciphers
;
2232 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2234 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2236 ciphers
= SSL_get_ciphers(s
);
2239 ssl_set_client_disabled(s
);
2240 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2241 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2242 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2244 sk
= sk_SSL_CIPHER_new_null();
2247 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2248 sk_SSL_CIPHER_free(sk
);
2256 /** return a STACK of the ciphers available for the SSL and in order of
2258 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2261 if (s
->cipher_list_by_id
!= NULL
) {
2262 return (s
->cipher_list_by_id
);
2263 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2264 return (s
->ctx
->cipher_list_by_id
);
2270 /** The old interface to get the same thing as SSL_get_ciphers() */
2271 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2273 const SSL_CIPHER
*c
;
2274 STACK_OF(SSL_CIPHER
) *sk
;
2278 sk
= SSL_get_ciphers(s
);
2279 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2281 c
= sk_SSL_CIPHER_value(sk
, n
);
2287 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2289 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2292 return ctx
->cipher_list
;
2296 /** specify the ciphers to be used by default by the SSL_CTX */
2297 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2299 STACK_OF(SSL_CIPHER
) *sk
;
2301 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2302 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2304 * ssl_create_cipher_list may return an empty stack if it was unable to
2305 * find a cipher matching the given rule string (for example if the rule
2306 * string specifies a cipher which has been disabled). This is not an
2307 * error as far as ssl_create_cipher_list is concerned, and hence
2308 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2312 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2313 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2319 /** specify the ciphers to be used by the SSL */
2320 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2322 STACK_OF(SSL_CIPHER
) *sk
;
2324 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2325 &s
->cipher_list_by_id
, str
, s
->cert
);
2326 /* see comment in SSL_CTX_set_cipher_list */
2329 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2330 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2336 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2339 STACK_OF(SSL_CIPHER
) *sk
;
2340 const SSL_CIPHER
*c
;
2343 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2347 sk
= s
->session
->ciphers
;
2349 if (sk_SSL_CIPHER_num(sk
) == 0)
2352 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2355 c
= sk_SSL_CIPHER_value(sk
, i
);
2356 n
= strlen(c
->name
);
2363 memcpy(p
, c
->name
, n
+ 1);
2372 /** return a servername extension value if provided in Client Hello, or NULL.
2373 * So far, only host_name types are defined (RFC 3546).
2376 const char *SSL_get_servername(const SSL
*s
, const int type
)
2378 if (type
!= TLSEXT_NAMETYPE_host_name
)
2381 return s
->session
&& !s
->ext
.hostname
?
2382 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2385 int SSL_get_servername_type(const SSL
*s
)
2388 && (!s
->ext
.hostname
? s
->session
->
2389 ext
.hostname
: s
->ext
.hostname
))
2390 return TLSEXT_NAMETYPE_host_name
;
2395 * SSL_select_next_proto implements the standard protocol selection. It is
2396 * expected that this function is called from the callback set by
2397 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2398 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2399 * not included in the length. A byte string of length 0 is invalid. No byte
2400 * string may be truncated. The current, but experimental algorithm for
2401 * selecting the protocol is: 1) If the server doesn't support NPN then this
2402 * is indicated to the callback. In this case, the client application has to
2403 * abort the connection or have a default application level protocol. 2) If
2404 * the server supports NPN, but advertises an empty list then the client
2405 * selects the first protocol in its list, but indicates via the API that this
2406 * fallback case was enacted. 3) Otherwise, the client finds the first
2407 * protocol in the server's list that it supports and selects this protocol.
2408 * This is because it's assumed that the server has better information about
2409 * which protocol a client should use. 4) If the client doesn't support any
2410 * of the server's advertised protocols, then this is treated the same as
2411 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2412 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2414 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2415 const unsigned char *server
,
2416 unsigned int server_len
,
2417 const unsigned char *client
, unsigned int client_len
)
2420 const unsigned char *result
;
2421 int status
= OPENSSL_NPN_UNSUPPORTED
;
2424 * For each protocol in server preference order, see if we support it.
2426 for (i
= 0; i
< server_len
;) {
2427 for (j
= 0; j
< client_len
;) {
2428 if (server
[i
] == client
[j
] &&
2429 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2430 /* We found a match */
2431 result
= &server
[i
];
2432 status
= OPENSSL_NPN_NEGOTIATED
;
2442 /* There's no overlap between our protocols and the server's list. */
2444 status
= OPENSSL_NPN_NO_OVERLAP
;
2447 *out
= (unsigned char *)result
+ 1;
2448 *outlen
= result
[0];
2452 #ifndef OPENSSL_NO_NEXTPROTONEG
2454 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2455 * client's requested protocol for this connection and returns 0. If the
2456 * client didn't request any protocol, then *data is set to NULL. Note that
2457 * the client can request any protocol it chooses. The value returned from
2458 * this function need not be a member of the list of supported protocols
2459 * provided by the callback.
2461 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2468 *len
= (unsigned int)s
->ext
.npn_len
;
2473 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2474 * a TLS server needs a list of supported protocols for Next Protocol
2475 * Negotiation. The returned list must be in wire format. The list is
2476 * returned by setting |out| to point to it and |outlen| to its length. This
2477 * memory will not be modified, but one should assume that the SSL* keeps a
2478 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2479 * wishes to advertise. Otherwise, no such extension will be included in the
2482 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2483 SSL_CTX_npn_advertised_cb_func cb
,
2486 ctx
->ext
.npn_advertised_cb
= cb
;
2487 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2491 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2492 * client needs to select a protocol from the server's provided list. |out|
2493 * must be set to point to the selected protocol (which may be within |in|).
2494 * The length of the protocol name must be written into |outlen|. The
2495 * server's advertised protocols are provided in |in| and |inlen|. The
2496 * callback can assume that |in| is syntactically valid. The client must
2497 * select a protocol. It is fatal to the connection if this callback returns
2498 * a value other than SSL_TLSEXT_ERR_OK.
2500 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2501 SSL_CTX_npn_select_cb_func cb
,
2504 ctx
->ext
.npn_select_cb
= cb
;
2505 ctx
->ext
.npn_select_cb_arg
= arg
;
2510 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2511 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2512 * length-prefixed strings). Returns 0 on success.
2514 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2515 unsigned int protos_len
)
2517 OPENSSL_free(ctx
->ext
.alpn
);
2518 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2519 if (ctx
->ext
.alpn
== NULL
) {
2520 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2523 ctx
->ext
.alpn_len
= protos_len
;
2529 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2530 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2531 * length-prefixed strings). Returns 0 on success.
2533 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2534 unsigned int protos_len
)
2536 OPENSSL_free(ssl
->ext
.alpn
);
2537 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2538 if (ssl
->ext
.alpn
== NULL
) {
2539 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2542 ssl
->ext
.alpn_len
= protos_len
;
2548 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2549 * called during ClientHello processing in order to select an ALPN protocol
2550 * from the client's list of offered protocols.
2552 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2553 SSL_CTX_alpn_select_cb_func cb
,
2556 ctx
->ext
.alpn_select_cb
= cb
;
2557 ctx
->ext
.alpn_select_cb_arg
= arg
;
2561 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2562 * On return it sets |*data| to point to |*len| bytes of protocol name
2563 * (not including the leading length-prefix byte). If the server didn't
2564 * respond with a negotiated protocol then |*len| will be zero.
2566 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2571 *data
= ssl
->s3
->alpn_selected
;
2575 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2578 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2579 const char *label
, size_t llen
,
2580 const unsigned char *p
, size_t plen
,
2583 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2586 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2591 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2593 const unsigned char *session_id
= a
->session_id
;
2595 unsigned char tmp_storage
[4];
2597 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2598 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2599 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2600 session_id
= tmp_storage
;
2604 ((unsigned long)session_id
[0]) |
2605 ((unsigned long)session_id
[1] << 8L) |
2606 ((unsigned long)session_id
[2] << 16L) |
2607 ((unsigned long)session_id
[3] << 24L);
2612 * NB: If this function (or indeed the hash function which uses a sort of
2613 * coarser function than this one) is changed, ensure
2614 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2615 * being able to construct an SSL_SESSION that will collide with any existing
2616 * session with a matching session ID.
2618 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2620 if (a
->ssl_version
!= b
->ssl_version
)
2622 if (a
->session_id_length
!= b
->session_id_length
)
2624 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2628 * These wrapper functions should remain rather than redeclaring
2629 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2630 * variable. The reason is that the functions aren't static, they're exposed
2634 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2636 SSL_CTX
*ret
= NULL
;
2639 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2643 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2646 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2647 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2650 ret
= OPENSSL_zalloc(sizeof(*ret
));
2655 ret
->min_proto_version
= 0;
2656 ret
->max_proto_version
= 0;
2657 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2658 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2659 /* We take the system default. */
2660 ret
->session_timeout
= meth
->get_timeout();
2661 ret
->references
= 1;
2662 ret
->lock
= CRYPTO_THREAD_lock_new();
2663 if (ret
->lock
== NULL
) {
2664 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2668 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2669 ret
->verify_mode
= SSL_VERIFY_NONE
;
2670 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2673 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2674 if (ret
->sessions
== NULL
)
2676 ret
->cert_store
= X509_STORE_new();
2677 if (ret
->cert_store
== NULL
)
2679 #ifndef OPENSSL_NO_CT
2680 ret
->ctlog_store
= CTLOG_STORE_new();
2681 if (ret
->ctlog_store
== NULL
)
2684 if (!ssl_create_cipher_list(ret
->method
,
2685 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2686 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2687 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2688 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2692 ret
->param
= X509_VERIFY_PARAM_new();
2693 if (ret
->param
== NULL
)
2696 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2697 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2700 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2701 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2705 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2708 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2711 /* No compression for DTLS */
2712 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2713 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2715 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2716 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2718 /* Setup RFC5077 ticket keys */
2719 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2720 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2721 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2722 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2723 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2724 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2725 ret
->options
|= SSL_OP_NO_TICKET
;
2727 #ifndef OPENSSL_NO_SRP
2728 if (!SSL_CTX_SRP_CTX_init(ret
))
2731 #ifndef OPENSSL_NO_ENGINE
2732 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2733 # define eng_strx(x) #x
2734 # define eng_str(x) eng_strx(x)
2735 /* Use specific client engine automatically... ignore errors */
2738 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2741 ENGINE_load_builtin_engines();
2742 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2744 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2750 * Default is to connect to non-RI servers. When RI is more widely
2751 * deployed might change this.
2753 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2755 * Disable compression by default to prevent CRIME. Applications can
2756 * re-enable compression by configuring
2757 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2758 * or by using the SSL_CONF library.
2760 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2762 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2765 * Default max early data is a fully loaded single record. Could be split
2766 * across multiple records in practice
2768 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2772 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2778 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2782 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2785 REF_PRINT_COUNT("SSL_CTX", ctx
);
2786 REF_ASSERT_ISNT(i
< 2);
2787 return ((i
> 1) ? 1 : 0);
2790 void SSL_CTX_free(SSL_CTX
*a
)
2797 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2798 REF_PRINT_COUNT("SSL_CTX", a
);
2801 REF_ASSERT_ISNT(i
< 0);
2803 X509_VERIFY_PARAM_free(a
->param
);
2804 dane_ctx_final(&a
->dane
);
2807 * Free internal session cache. However: the remove_cb() may reference
2808 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2809 * after the sessions were flushed.
2810 * As the ex_data handling routines might also touch the session cache,
2811 * the most secure solution seems to be: empty (flush) the cache, then
2812 * free ex_data, then finally free the cache.
2813 * (See ticket [openssl.org #212].)
2815 if (a
->sessions
!= NULL
)
2816 SSL_CTX_flush_sessions(a
, 0);
2818 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2819 lh_SSL_SESSION_free(a
->sessions
);
2820 X509_STORE_free(a
->cert_store
);
2821 #ifndef OPENSSL_NO_CT
2822 CTLOG_STORE_free(a
->ctlog_store
);
2824 sk_SSL_CIPHER_free(a
->cipher_list
);
2825 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2826 ssl_cert_free(a
->cert
);
2827 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2828 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2829 a
->comp_methods
= NULL
;
2830 #ifndef OPENSSL_NO_SRTP
2831 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2833 #ifndef OPENSSL_NO_SRP
2834 SSL_CTX_SRP_CTX_free(a
);
2836 #ifndef OPENSSL_NO_ENGINE
2837 ENGINE_finish(a
->client_cert_engine
);
2840 #ifndef OPENSSL_NO_EC
2841 OPENSSL_free(a
->ext
.ecpointformats
);
2842 OPENSSL_free(a
->ext
.supportedgroups
);
2844 OPENSSL_free(a
->ext
.alpn
);
2846 CRYPTO_THREAD_lock_free(a
->lock
);
2851 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2853 ctx
->default_passwd_callback
= cb
;
2856 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2858 ctx
->default_passwd_callback_userdata
= u
;
2861 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2863 return ctx
->default_passwd_callback
;
2866 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2868 return ctx
->default_passwd_callback_userdata
;
2871 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2873 s
->default_passwd_callback
= cb
;
2876 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2878 s
->default_passwd_callback_userdata
= u
;
2881 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2883 return s
->default_passwd_callback
;
2886 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2888 return s
->default_passwd_callback_userdata
;
2891 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2892 int (*cb
) (X509_STORE_CTX
*, void *),
2895 ctx
->app_verify_callback
= cb
;
2896 ctx
->app_verify_arg
= arg
;
2899 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2900 int (*cb
) (int, X509_STORE_CTX
*))
2902 ctx
->verify_mode
= mode
;
2903 ctx
->default_verify_callback
= cb
;
2906 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2908 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2911 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2913 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2916 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2918 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2921 void ssl_set_masks(SSL
*s
)
2924 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2925 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2926 unsigned long mask_k
, mask_a
;
2927 #ifndef OPENSSL_NO_EC
2928 int have_ecc_cert
, ecdsa_ok
;
2933 #ifndef OPENSSL_NO_DH
2934 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2939 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2940 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2941 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2942 #ifndef OPENSSL_NO_EC
2943 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2949 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2950 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2953 #ifndef OPENSSL_NO_GOST
2954 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2955 mask_k
|= SSL_kGOST
;
2956 mask_a
|= SSL_aGOST12
;
2958 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2959 mask_k
|= SSL_kGOST
;
2960 mask_a
|= SSL_aGOST12
;
2962 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2963 mask_k
|= SSL_kGOST
;
2964 mask_a
|= SSL_aGOST01
;
2974 if (rsa_enc
|| rsa_sign
) {
2982 mask_a
|= SSL_aNULL
;
2985 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2986 * depending on the key usage extension.
2988 #ifndef OPENSSL_NO_EC
2989 if (have_ecc_cert
) {
2991 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2992 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2993 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2996 mask_a
|= SSL_aECDSA
;
3000 #ifndef OPENSSL_NO_EC
3001 mask_k
|= SSL_kECDHE
;
3004 #ifndef OPENSSL_NO_PSK
3007 if (mask_k
& SSL_kRSA
)
3008 mask_k
|= SSL_kRSAPSK
;
3009 if (mask_k
& SSL_kDHE
)
3010 mask_k
|= SSL_kDHEPSK
;
3011 if (mask_k
& SSL_kECDHE
)
3012 mask_k
|= SSL_kECDHEPSK
;
3015 s
->s3
->tmp
.mask_k
= mask_k
;
3016 s
->s3
->tmp
.mask_a
= mask_a
;
3019 #ifndef OPENSSL_NO_EC
3021 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3023 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3024 /* key usage, if present, must allow signing */
3025 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3026 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3027 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3031 return 1; /* all checks are ok */
3036 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3037 size_t *serverinfo_length
)
3039 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3040 *serverinfo_length
= 0;
3042 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3045 *serverinfo
= cpk
->serverinfo
;
3046 *serverinfo_length
= cpk
->serverinfo_length
;
3050 void ssl_update_cache(SSL
*s
, int mode
)
3055 * If the session_id_length is 0, we are not supposed to cache it, and it
3056 * would be rather hard to do anyway :-)
3058 if (s
->session
->session_id_length
== 0)
3061 i
= s
->session_ctx
->session_cache_mode
;
3062 if ((i
& mode
) && (!s
->hit
)
3063 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3064 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3065 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3066 SSL_SESSION_up_ref(s
->session
);
3067 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3068 SSL_SESSION_free(s
->session
);
3071 /* auto flush every 255 connections */
3072 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3073 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3074 ? s
->session_ctx
->stats
.sess_connect_good
3075 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3076 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3081 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3086 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3091 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3095 if (s
->method
!= meth
) {
3096 const SSL_METHOD
*sm
= s
->method
;
3097 int (*hf
) (SSL
*) = s
->handshake_func
;
3099 if (sm
->version
== meth
->version
)
3104 ret
= s
->method
->ssl_new(s
);
3107 if (hf
== sm
->ssl_connect
)
3108 s
->handshake_func
= meth
->ssl_connect
;
3109 else if (hf
== sm
->ssl_accept
)
3110 s
->handshake_func
= meth
->ssl_accept
;
3115 int SSL_get_error(const SSL
*s
, int i
)
3122 return (SSL_ERROR_NONE
);
3125 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3126 * where we do encode the error
3128 if ((l
= ERR_peek_error()) != 0) {
3129 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3130 return (SSL_ERROR_SYSCALL
);
3132 return (SSL_ERROR_SSL
);
3135 if (SSL_want_read(s
)) {
3136 bio
= SSL_get_rbio(s
);
3137 if (BIO_should_read(bio
))
3138 return (SSL_ERROR_WANT_READ
);
3139 else if (BIO_should_write(bio
))
3141 * This one doesn't make too much sense ... We never try to write
3142 * to the rbio, and an application program where rbio and wbio
3143 * are separate couldn't even know what it should wait for.
3144 * However if we ever set s->rwstate incorrectly (so that we have
3145 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3146 * wbio *are* the same, this test works around that bug; so it
3147 * might be safer to keep it.
3149 return (SSL_ERROR_WANT_WRITE
);
3150 else if (BIO_should_io_special(bio
)) {
3151 reason
= BIO_get_retry_reason(bio
);
3152 if (reason
== BIO_RR_CONNECT
)
3153 return (SSL_ERROR_WANT_CONNECT
);
3154 else if (reason
== BIO_RR_ACCEPT
)
3155 return (SSL_ERROR_WANT_ACCEPT
);
3157 return (SSL_ERROR_SYSCALL
); /* unknown */
3161 if (SSL_want_write(s
)) {
3162 /* Access wbio directly - in order to use the buffered bio if present */
3164 if (BIO_should_write(bio
))
3165 return (SSL_ERROR_WANT_WRITE
);
3166 else if (BIO_should_read(bio
))
3168 * See above (SSL_want_read(s) with BIO_should_write(bio))
3170 return (SSL_ERROR_WANT_READ
);
3171 else if (BIO_should_io_special(bio
)) {
3172 reason
= BIO_get_retry_reason(bio
);
3173 if (reason
== BIO_RR_CONNECT
)
3174 return (SSL_ERROR_WANT_CONNECT
);
3175 else if (reason
== BIO_RR_ACCEPT
)
3176 return (SSL_ERROR_WANT_ACCEPT
);
3178 return (SSL_ERROR_SYSCALL
);
3181 if (SSL_want_x509_lookup(s
))
3182 return (SSL_ERROR_WANT_X509_LOOKUP
);
3183 if (SSL_want_async(s
))
3184 return SSL_ERROR_WANT_ASYNC
;
3185 if (SSL_want_async_job(s
))
3186 return SSL_ERROR_WANT_ASYNC_JOB
;
3187 if (SSL_want_early(s
))
3188 return SSL_ERROR_WANT_EARLY
;
3190 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3191 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3192 return (SSL_ERROR_ZERO_RETURN
);
3194 return (SSL_ERROR_SYSCALL
);
3197 static int ssl_do_handshake_intern(void *vargs
)
3199 struct ssl_async_args
*args
;
3202 args
= (struct ssl_async_args
*)vargs
;
3205 return s
->handshake_func(s
);
3208 int SSL_do_handshake(SSL
*s
)
3212 if (s
->handshake_func
== NULL
) {
3213 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3217 ossl_statem_check_finish_init(s
, -1);
3219 s
->method
->ssl_renegotiate_check(s
, 0);
3221 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3222 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3223 struct ssl_async_args args
;
3227 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3229 ret
= s
->handshake_func(s
);
3235 void SSL_set_accept_state(SSL
*s
)
3239 ossl_statem_clear(s
);
3240 s
->handshake_func
= s
->method
->ssl_accept
;
3244 void SSL_set_connect_state(SSL
*s
)
3248 ossl_statem_clear(s
);
3249 s
->handshake_func
= s
->method
->ssl_connect
;
3253 int ssl_undefined_function(SSL
*s
)
3255 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3259 int ssl_undefined_void_function(void)
3261 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3262 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3266 int ssl_undefined_const_function(const SSL
*s
)
3271 const SSL_METHOD
*ssl_bad_method(int ver
)
3273 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3277 const char *ssl_protocol_to_string(int version
)
3281 case TLS1_3_VERSION
:
3284 case TLS1_2_VERSION
:
3287 case TLS1_1_VERSION
:
3302 case DTLS1_2_VERSION
:
3310 const char *SSL_get_version(const SSL
*s
)
3312 return ssl_protocol_to_string(s
->version
);
3315 SSL
*SSL_dup(SSL
*s
)
3317 STACK_OF(X509_NAME
) *sk
;
3322 /* If we're not quiescent, just up_ref! */
3323 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3324 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3329 * Otherwise, copy configuration state, and session if set.
3331 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3334 if (s
->session
!= NULL
) {
3336 * Arranges to share the same session via up_ref. This "copies"
3337 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3339 if (!SSL_copy_session_id(ret
, s
))
3343 * No session has been established yet, so we have to expect that
3344 * s->cert or ret->cert will be changed later -- they should not both
3345 * point to the same object, and thus we can't use
3346 * SSL_copy_session_id.
3348 if (!SSL_set_ssl_method(ret
, s
->method
))
3351 if (s
->cert
!= NULL
) {
3352 ssl_cert_free(ret
->cert
);
3353 ret
->cert
= ssl_cert_dup(s
->cert
);
3354 if (ret
->cert
== NULL
)
3358 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3359 (int)s
->sid_ctx_length
))
3363 if (!ssl_dane_dup(ret
, s
))
3365 ret
->version
= s
->version
;
3366 ret
->options
= s
->options
;
3367 ret
->mode
= s
->mode
;
3368 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3369 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3370 ret
->msg_callback
= s
->msg_callback
;
3371 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3372 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3373 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3374 ret
->generate_session_id
= s
->generate_session_id
;
3376 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3378 /* copy app data, a little dangerous perhaps */
3379 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3382 /* setup rbio, and wbio */
3383 if (s
->rbio
!= NULL
) {
3384 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3387 if (s
->wbio
!= NULL
) {
3388 if (s
->wbio
!= s
->rbio
) {
3389 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3392 BIO_up_ref(ret
->rbio
);
3393 ret
->wbio
= ret
->rbio
;
3397 ret
->server
= s
->server
;
3398 if (s
->handshake_func
) {
3400 SSL_set_accept_state(ret
);
3402 SSL_set_connect_state(ret
);
3404 ret
->shutdown
= s
->shutdown
;
3407 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3408 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3410 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3412 /* dup the cipher_list and cipher_list_by_id stacks */
3413 if (s
->cipher_list
!= NULL
) {
3414 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3417 if (s
->cipher_list_by_id
!= NULL
)
3418 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3422 /* Dup the client_CA list */
3423 if (s
->ca_names
!= NULL
) {
3424 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3427 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3428 xn
= sk_X509_NAME_value(sk
, i
);
3429 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3442 void ssl_clear_cipher_ctx(SSL
*s
)
3444 if (s
->enc_read_ctx
!= NULL
) {
3445 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3446 s
->enc_read_ctx
= NULL
;
3448 if (s
->enc_write_ctx
!= NULL
) {
3449 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3450 s
->enc_write_ctx
= NULL
;
3452 #ifndef OPENSSL_NO_COMP
3453 COMP_CTX_free(s
->expand
);
3455 COMP_CTX_free(s
->compress
);
3460 X509
*SSL_get_certificate(const SSL
*s
)
3462 if (s
->cert
!= NULL
)
3463 return (s
->cert
->key
->x509
);
3468 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3470 if (s
->cert
!= NULL
)
3471 return (s
->cert
->key
->privatekey
);
3476 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3478 if (ctx
->cert
!= NULL
)
3479 return ctx
->cert
->key
->x509
;
3484 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3486 if (ctx
->cert
!= NULL
)
3487 return ctx
->cert
->key
->privatekey
;
3492 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3494 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3495 return (s
->session
->cipher
);
3499 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3501 #ifndef OPENSSL_NO_COMP
3502 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3508 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3510 #ifndef OPENSSL_NO_COMP
3511 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3517 int ssl_init_wbio_buffer(SSL
*s
)
3521 if (s
->bbio
!= NULL
) {
3522 /* Already buffered. */
3526 bbio
= BIO_new(BIO_f_buffer());
3527 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3529 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3533 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3538 int ssl_free_wbio_buffer(SSL
*s
)
3540 /* callers ensure s is never null */
3541 if (s
->bbio
== NULL
)
3544 s
->wbio
= BIO_pop(s
->wbio
);
3545 if (!ossl_assert(s
->wbio
!= NULL
))
3553 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3555 ctx
->quiet_shutdown
= mode
;
3558 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3560 return (ctx
->quiet_shutdown
);
3563 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3565 s
->quiet_shutdown
= mode
;
3568 int SSL_get_quiet_shutdown(const SSL
*s
)
3570 return (s
->quiet_shutdown
);
3573 void SSL_set_shutdown(SSL
*s
, int mode
)
3578 int SSL_get_shutdown(const SSL
*s
)
3583 int SSL_version(const SSL
*s
)
3588 int SSL_client_version(const SSL
*s
)
3590 return s
->client_version
;
3593 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3598 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3601 if (ssl
->ctx
== ctx
)
3604 ctx
= ssl
->session_ctx
;
3605 new_cert
= ssl_cert_dup(ctx
->cert
);
3606 if (new_cert
== NULL
) {
3610 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3611 ssl_cert_free(new_cert
);
3615 ssl_cert_free(ssl
->cert
);
3616 ssl
->cert
= new_cert
;
3619 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3620 * so setter APIs must prevent invalid lengths from entering the system.
3622 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3626 * If the session ID context matches that of the parent SSL_CTX,
3627 * inherit it from the new SSL_CTX as well. If however the context does
3628 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3629 * leave it unchanged.
3631 if ((ssl
->ctx
!= NULL
) &&
3632 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3633 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3634 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3635 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3638 SSL_CTX_up_ref(ctx
);
3639 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3645 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3647 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3650 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3652 X509_LOOKUP
*lookup
;
3654 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3657 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3659 /* Clear any errors if the default directory does not exist */
3665 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3667 X509_LOOKUP
*lookup
;
3669 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3673 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3675 /* Clear any errors if the default file does not exist */
3681 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3684 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3687 void SSL_set_info_callback(SSL
*ssl
,
3688 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3690 ssl
->info_callback
= cb
;
3694 * One compiler (Diab DCC) doesn't like argument names in returned function
3697 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3700 return ssl
->info_callback
;
3703 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3705 ssl
->verify_result
= arg
;
3708 long SSL_get_verify_result(const SSL
*ssl
)
3710 return (ssl
->verify_result
);
3713 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3716 return sizeof(ssl
->s3
->client_random
);
3717 if (outlen
> sizeof(ssl
->s3
->client_random
))
3718 outlen
= sizeof(ssl
->s3
->client_random
);
3719 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3723 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3726 return sizeof(ssl
->s3
->server_random
);
3727 if (outlen
> sizeof(ssl
->s3
->server_random
))
3728 outlen
= sizeof(ssl
->s3
->server_random
);
3729 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3733 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3734 unsigned char *out
, size_t outlen
)
3737 return session
->master_key_length
;
3738 if (outlen
> session
->master_key_length
)
3739 outlen
= session
->master_key_length
;
3740 memcpy(out
, session
->master_key
, outlen
);
3744 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3746 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3749 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3751 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3754 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3756 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3759 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3761 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3764 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3766 return (ctx
->cert_store
);
3769 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3771 X509_STORE_free(ctx
->cert_store
);
3772 ctx
->cert_store
= store
;
3775 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3778 X509_STORE_up_ref(store
);
3779 SSL_CTX_set_cert_store(ctx
, store
);
3782 int SSL_want(const SSL
*s
)
3784 return (s
->rwstate
);
3788 * \brief Set the callback for generating temporary DH keys.
3789 * \param ctx the SSL context.
3790 * \param dh the callback
3793 #ifndef OPENSSL_NO_DH
3794 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3795 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3798 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3801 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3804 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3808 #ifndef OPENSSL_NO_PSK
3809 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3811 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3812 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3815 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3816 if (identity_hint
!= NULL
) {
3817 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3818 if (ctx
->cert
->psk_identity_hint
== NULL
)
3821 ctx
->cert
->psk_identity_hint
= NULL
;
3825 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3830 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3831 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3834 OPENSSL_free(s
->cert
->psk_identity_hint
);
3835 if (identity_hint
!= NULL
) {
3836 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3837 if (s
->cert
->psk_identity_hint
== NULL
)
3840 s
->cert
->psk_identity_hint
= NULL
;
3844 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3846 if (s
== NULL
|| s
->session
== NULL
)
3848 return (s
->session
->psk_identity_hint
);
3851 const char *SSL_get_psk_identity(const SSL
*s
)
3853 if (s
== NULL
|| s
->session
== NULL
)
3855 return (s
->session
->psk_identity
);
3858 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3860 s
->psk_client_callback
= cb
;
3863 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3865 ctx
->psk_client_callback
= cb
;
3868 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3870 s
->psk_server_callback
= cb
;
3873 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3875 ctx
->psk_server_callback
= cb
;
3879 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3880 void (*cb
) (int write_p
, int version
,
3881 int content_type
, const void *buf
,
3882 size_t len
, SSL
*ssl
, void *arg
))
3884 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3887 void SSL_set_msg_callback(SSL
*ssl
,
3888 void (*cb
) (int write_p
, int version
,
3889 int content_type
, const void *buf
,
3890 size_t len
, SSL
*ssl
, void *arg
))
3892 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3895 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3896 int (*cb
) (SSL
*ssl
,
3900 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3901 (void (*)(void))cb
);
3904 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3905 int (*cb
) (SSL
*ssl
,
3906 int is_forward_secure
))
3908 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3909 (void (*)(void))cb
);
3912 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3913 size_t (*cb
) (SSL
*ssl
, int type
,
3914 size_t len
, void *arg
))
3916 ctx
->record_padding_cb
= cb
;
3919 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3921 ctx
->record_padding_arg
= arg
;
3924 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3926 return ctx
->record_padding_arg
;
3929 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3931 /* block size of 0 or 1 is basically no padding */
3932 if (block_size
== 1)
3933 ctx
->block_padding
= 0;
3934 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3935 ctx
->block_padding
= block_size
;
3941 void SSL_set_record_padding_callback(SSL
*ssl
,
3942 size_t (*cb
) (SSL
*ssl
, int type
,
3943 size_t len
, void *arg
))
3945 ssl
->record_padding_cb
= cb
;
3948 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3950 ssl
->record_padding_arg
= arg
;
3953 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3955 return ssl
->record_padding_arg
;
3958 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3960 /* block size of 0 or 1 is basically no padding */
3961 if (block_size
== 1)
3962 ssl
->block_padding
= 0;
3963 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3964 ssl
->block_padding
= block_size
;
3971 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3972 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3973 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3974 * Returns the newly allocated ctx;
3977 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3979 ssl_clear_hash_ctx(hash
);
3980 *hash
= EVP_MD_CTX_new();
3981 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3982 EVP_MD_CTX_free(*hash
);
3989 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3992 EVP_MD_CTX_free(*hash
);
3996 /* Retrieve handshake hashes */
3997 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4000 EVP_MD_CTX
*ctx
= NULL
;
4001 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4002 int hashleni
= EVP_MD_CTX_size(hdgst
);
4005 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4008 ctx
= EVP_MD_CTX_new();
4012 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4013 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4016 *hashlen
= hashleni
;
4020 EVP_MD_CTX_free(ctx
);
4024 int SSL_session_reused(SSL
*s
)
4029 int SSL_is_server(const SSL
*s
)
4034 #if OPENSSL_API_COMPAT < 0x10100000L
4035 void SSL_set_debug(SSL
*s
, int debug
)
4037 /* Old function was do-nothing anyway... */
4043 void SSL_set_security_level(SSL
*s
, int level
)
4045 s
->cert
->sec_level
= level
;
4048 int SSL_get_security_level(const SSL
*s
)
4050 return s
->cert
->sec_level
;
4053 void SSL_set_security_callback(SSL
*s
,
4054 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4055 int op
, int bits
, int nid
,
4056 void *other
, void *ex
))
4058 s
->cert
->sec_cb
= cb
;
4061 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4062 const SSL_CTX
*ctx
, int op
,
4063 int bits
, int nid
, void *other
,
4065 return s
->cert
->sec_cb
;
4068 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4070 s
->cert
->sec_ex
= ex
;
4073 void *SSL_get0_security_ex_data(const SSL
*s
)
4075 return s
->cert
->sec_ex
;
4078 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4080 ctx
->cert
->sec_level
= level
;
4083 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4085 return ctx
->cert
->sec_level
;
4088 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4089 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4090 int op
, int bits
, int nid
,
4091 void *other
, void *ex
))
4093 ctx
->cert
->sec_cb
= cb
;
4096 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4102 return ctx
->cert
->sec_cb
;
4105 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4107 ctx
->cert
->sec_ex
= ex
;
4110 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4112 return ctx
->cert
->sec_ex
;
4116 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4117 * can return unsigned long, instead of the generic long return value from the
4118 * control interface.
4120 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4122 return ctx
->options
;
4125 unsigned long SSL_get_options(const SSL
*s
)
4130 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4132 return ctx
->options
|= op
;
4135 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4137 return s
->options
|= op
;
4140 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4142 return ctx
->options
&= ~op
;
4145 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4147 return s
->options
&= ~op
;
4150 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4152 return s
->verified_chain
;
4155 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4157 #ifndef OPENSSL_NO_CT
4160 * Moves SCTs from the |src| stack to the |dst| stack.
4161 * The source of each SCT will be set to |origin|.
4162 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4164 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4166 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4167 sct_source_t origin
)
4173 *dst
= sk_SCT_new_null();
4175 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4180 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4181 if (SCT_set_source(sct
, origin
) != 1)
4184 if (sk_SCT_push(*dst
, sct
) <= 0)
4192 sk_SCT_push(src
, sct
); /* Put the SCT back */
4197 * Look for data collected during ServerHello and parse if found.
4198 * Returns the number of SCTs extracted.
4200 static int ct_extract_tls_extension_scts(SSL
*s
)
4202 int scts_extracted
= 0;
4204 if (s
->ext
.scts
!= NULL
) {
4205 const unsigned char *p
= s
->ext
.scts
;
4206 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4208 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4210 SCT_LIST_free(scts
);
4213 return scts_extracted
;
4217 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4218 * contains an SCT X509 extension. They will be stored in |s->scts|.
4220 * - The number of SCTs extracted, assuming an OCSP response exists.
4221 * - 0 if no OCSP response exists or it contains no SCTs.
4222 * - A negative integer if an error occurs.
4224 static int ct_extract_ocsp_response_scts(SSL
*s
)
4226 # ifndef OPENSSL_NO_OCSP
4227 int scts_extracted
= 0;
4228 const unsigned char *p
;
4229 OCSP_BASICRESP
*br
= NULL
;
4230 OCSP_RESPONSE
*rsp
= NULL
;
4231 STACK_OF(SCT
) *scts
= NULL
;
4234 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4237 p
= s
->ext
.ocsp
.resp
;
4238 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4242 br
= OCSP_response_get1_basic(rsp
);
4246 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4247 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4253 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4255 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4256 if (scts_extracted
< 0)
4260 SCT_LIST_free(scts
);
4261 OCSP_BASICRESP_free(br
);
4262 OCSP_RESPONSE_free(rsp
);
4263 return scts_extracted
;
4265 /* Behave as if no OCSP response exists */
4271 * Attempts to extract SCTs from the peer certificate.
4272 * Return the number of SCTs extracted, or a negative integer if an error
4275 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4277 int scts_extracted
= 0;
4278 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4281 STACK_OF(SCT
) *scts
=
4282 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4285 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4287 SCT_LIST_free(scts
);
4290 return scts_extracted
;
4294 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4295 * response (if it exists) and X509v3 extensions in the certificate.
4296 * Returns NULL if an error occurs.
4298 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4300 if (!s
->scts_parsed
) {
4301 if (ct_extract_tls_extension_scts(s
) < 0 ||
4302 ct_extract_ocsp_response_scts(s
) < 0 ||
4303 ct_extract_x509v3_extension_scts(s
) < 0)
4313 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4314 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4319 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4320 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4322 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4325 for (i
= 0; i
< count
; ++i
) {
4326 SCT
*sct
= sk_SCT_value(scts
, i
);
4327 int status
= SCT_get_validation_status(sct
);
4329 if (status
== SCT_VALIDATION_STATUS_VALID
)
4332 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4336 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4340 * Since code exists that uses the custom extension handler for CT, look
4341 * for this and throw an error if they have already registered to use CT.
4343 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4344 TLSEXT_TYPE_signed_certificate_timestamp
))
4346 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4347 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4351 if (callback
!= NULL
) {
4353 * If we are validating CT, then we MUST accept SCTs served via OCSP
4355 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4359 s
->ct_validation_callback
= callback
;
4360 s
->ct_validation_callback_arg
= arg
;
4365 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4366 ssl_ct_validation_cb callback
, void *arg
)
4369 * Since code exists that uses the custom extension handler for CT, look for
4370 * this and throw an error if they have already registered to use CT.
4372 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4373 TLSEXT_TYPE_signed_certificate_timestamp
))
4375 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4376 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4380 ctx
->ct_validation_callback
= callback
;
4381 ctx
->ct_validation_callback_arg
= arg
;
4385 int SSL_ct_is_enabled(const SSL
*s
)
4387 return s
->ct_validation_callback
!= NULL
;
4390 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4392 return ctx
->ct_validation_callback
!= NULL
;
4395 int ssl_validate_ct(SSL
*s
)
4398 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4400 SSL_DANE
*dane
= &s
->dane
;
4401 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4402 const STACK_OF(SCT
) *scts
;
4405 * If no callback is set, the peer is anonymous, or its chain is invalid,
4406 * skip SCT validation - just return success. Applications that continue
4407 * handshakes without certificates, with unverified chains, or pinned leaf
4408 * certificates are outside the scope of the WebPKI and CT.
4410 * The above exclusions notwithstanding the vast majority of peers will
4411 * have rather ordinary certificate chains validated by typical
4412 * applications that perform certificate verification and therefore will
4413 * process SCTs when enabled.
4415 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4416 s
->verify_result
!= X509_V_OK
||
4417 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4421 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4422 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4424 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4425 switch (dane
->mtlsa
->usage
) {
4426 case DANETLS_USAGE_DANE_TA
:
4427 case DANETLS_USAGE_DANE_EE
:
4432 ctx
= CT_POLICY_EVAL_CTX_new();
4434 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4438 issuer
= sk_X509_value(s
->verified_chain
, 1);
4439 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4440 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4441 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4442 CT_POLICY_EVAL_CTX_set_time(
4443 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4445 scts
= SSL_get0_peer_scts(s
);
4448 * This function returns success (> 0) only when all the SCTs are valid, 0
4449 * when some are invalid, and < 0 on various internal errors (out of
4450 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4451 * reason to abort the handshake, that decision is up to the callback.
4452 * Therefore, we error out only in the unexpected case that the return
4453 * value is negative.
4455 * XXX: One might well argue that the return value of this function is an
4456 * unfortunate design choice. Its job is only to determine the validation
4457 * status of each of the provided SCTs. So long as it correctly separates
4458 * the wheat from the chaff it should return success. Failure in this case
4459 * ought to correspond to an inability to carry out its duties.
4461 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4462 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4466 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4468 ret
= 0; /* This function returns 0 on failure */
4471 CT_POLICY_EVAL_CTX_free(ctx
);
4473 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4474 * failure return code here. Also the application may wish the complete
4475 * the handshake, and then disconnect cleanly at a higher layer, after
4476 * checking the verification status of the completed connection.
4478 * We therefore force a certificate verification failure which will be
4479 * visible via SSL_get_verify_result() and cached as part of any resumed
4482 * Note: the permissive callback is for information gathering only, always
4483 * returns success, and does not affect verification status. Only the
4484 * strict callback or a custom application-specified callback can trigger
4485 * connection failure or record a verification error.
4488 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4492 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4494 switch (validation_mode
) {
4496 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4498 case SSL_CT_VALIDATION_PERMISSIVE
:
4499 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4500 case SSL_CT_VALIDATION_STRICT
:
4501 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4505 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4507 switch (validation_mode
) {
4509 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4511 case SSL_CT_VALIDATION_PERMISSIVE
:
4512 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4513 case SSL_CT_VALIDATION_STRICT
:
4514 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4518 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4520 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4523 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4525 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4528 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4530 CTLOG_STORE_free(ctx
->ctlog_store
);
4531 ctx
->ctlog_store
= logs
;
4534 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4536 return ctx
->ctlog_store
;
4539 #endif /* OPENSSL_NO_CT */
4541 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4544 c
->early_cb_arg
= arg
;
4547 int SSL_early_isv2(SSL
*s
)
4549 if (s
->clienthello
== NULL
)
4551 return s
->clienthello
->isv2
;
4554 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4556 if (s
->clienthello
== NULL
)
4558 return s
->clienthello
->legacy_version
;
4561 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4563 if (s
->clienthello
== NULL
)
4566 *out
= s
->clienthello
->random
;
4567 return SSL3_RANDOM_SIZE
;
4570 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4572 if (s
->clienthello
== NULL
)
4575 *out
= s
->clienthello
->session_id
;
4576 return s
->clienthello
->session_id_len
;
4579 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4581 if (s
->clienthello
== NULL
)
4584 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4585 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4588 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4590 if (s
->clienthello
== NULL
)
4593 *out
= s
->clienthello
->compressions
;
4594 return s
->clienthello
->compressions_len
;
4597 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4603 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4605 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4606 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4610 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4611 if (present
== NULL
)
4613 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4614 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4616 if (ext
->received_order
>= num
)
4618 present
[ext
->received_order
] = ext
->type
;
4625 OPENSSL_free(present
);
4629 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4635 if (s
->clienthello
== NULL
)
4637 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4638 r
= s
->clienthello
->pre_proc_exts
+ i
;
4639 if (r
->present
&& r
->type
== type
) {
4641 *out
= PACKET_data(&r
->data
);
4643 *outlen
= PACKET_remaining(&r
->data
);
4650 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4652 ctx
->keylog_callback
= cb
;
4655 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4657 return ctx
->keylog_callback
;
4660 static int nss_keylog_int(const char *prefix
,
4662 const uint8_t *parameter_1
,
4663 size_t parameter_1_len
,
4664 const uint8_t *parameter_2
,
4665 size_t parameter_2_len
)
4668 char *cursor
= NULL
;
4673 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4676 * Our output buffer will contain the following strings, rendered with
4677 * space characters in between, terminated by a NULL character: first the
4678 * prefix, then the first parameter, then the second parameter. The
4679 * meaning of each parameter depends on the specific key material being
4680 * logged. Note that the first and second parameters are encoded in
4681 * hexadecimal, so we need a buffer that is twice their lengths.
4683 prefix_len
= strlen(prefix
);
4684 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4685 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4686 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4690 strcpy(cursor
, prefix
);
4691 cursor
+= prefix_len
;
4694 for (i
= 0; i
< parameter_1_len
; i
++) {
4695 sprintf(cursor
, "%02x", parameter_1
[i
]);
4700 for (i
= 0; i
< parameter_2_len
; i
++) {
4701 sprintf(cursor
, "%02x", parameter_2
[i
]);
4706 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4712 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4713 const uint8_t *encrypted_premaster
,
4714 size_t encrypted_premaster_len
,
4715 const uint8_t *premaster
,
4716 size_t premaster_len
)
4718 if (encrypted_premaster_len
< 8) {
4719 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4723 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4724 return nss_keylog_int("RSA",
4726 encrypted_premaster
,
4732 int ssl_log_secret(SSL
*ssl
,
4734 const uint8_t *secret
,
4737 return nss_keylog_int(label
,
4739 ssl
->s3
->client_random
,
4745 #define SSLV2_CIPHER_LEN 3
4747 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4752 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4754 if (PACKET_remaining(cipher_suites
) == 0) {
4755 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4756 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4760 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4761 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4762 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4763 *al
= SSL_AD_DECODE_ERROR
;
4767 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4768 s
->s3
->tmp
.ciphers_raw
= NULL
;
4769 s
->s3
->tmp
.ciphers_rawlen
= 0;
4772 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4773 PACKET sslv2ciphers
= *cipher_suites
;
4774 unsigned int leadbyte
;
4778 * We store the raw ciphers list in SSLv3+ format so we need to do some
4779 * preprocessing to convert the list first. If there are any SSLv2 only
4780 * ciphersuites with a non-zero leading byte then we are going to
4781 * slightly over allocate because we won't store those. But that isn't a
4784 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4785 s
->s3
->tmp
.ciphers_raw
= raw
;
4787 *al
= SSL_AD_INTERNAL_ERROR
;
4790 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4791 PACKET_remaining(&sslv2ciphers
) > 0;
4792 raw
+= TLS_CIPHER_LEN
) {
4793 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4795 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4798 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4799 *al
= SSL_AD_DECODE_ERROR
;
4800 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4801 s
->s3
->tmp
.ciphers_raw
= NULL
;
4802 s
->s3
->tmp
.ciphers_rawlen
= 0;
4806 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4808 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4809 &s
->s3
->tmp
.ciphers_rawlen
)) {
4810 *al
= SSL_AD_INTERNAL_ERROR
;
4818 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4819 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4820 STACK_OF(SSL_CIPHER
) **scsvs
)
4825 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4827 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4830 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4831 STACK_OF(SSL_CIPHER
) **skp
,
4832 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4833 int sslv2format
, int *al
)
4835 const SSL_CIPHER
*c
;
4836 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4837 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4839 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4840 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4842 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4844 if (PACKET_remaining(cipher_suites
) == 0) {
4845 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4846 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4850 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4851 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4852 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4853 *al
= SSL_AD_DECODE_ERROR
;
4857 sk
= sk_SSL_CIPHER_new_null();
4858 scsvs
= sk_SSL_CIPHER_new_null();
4859 if (sk
== NULL
|| scsvs
== NULL
) {
4860 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4861 *al
= SSL_AD_INTERNAL_ERROR
;
4865 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4867 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4868 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4869 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4871 if (sslv2format
&& cipher
[0] != '\0')
4874 /* For SSLv2-compat, ignore leading 0-byte. */
4875 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4877 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4878 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4879 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4880 *al
= SSL_AD_INTERNAL_ERROR
;
4885 if (PACKET_remaining(cipher_suites
) > 0) {
4886 *al
= SSL_AD_DECODE_ERROR
;
4887 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
4894 sk_SSL_CIPHER_free(sk
);
4895 if (scsvs_out
!= NULL
)
4898 sk_SSL_CIPHER_free(scsvs
);
4901 sk_SSL_CIPHER_free(sk
);
4902 sk_SSL_CIPHER_free(scsvs
);
4906 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4908 ctx
->max_early_data
= max_early_data
;
4913 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4915 return ctx
->max_early_data
;
4918 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4920 s
->max_early_data
= max_early_data
;
4925 uint32_t SSL_get_max_early_data(const SSL
*s
)
4927 return s
->max_early_data
;