2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
44 #include <openssl/objects.h>
45 #include <openssl/lhash.h>
46 #include <openssl/x509v3.h>
47 #include <openssl/rand.h>
48 #include <openssl/ocsp.h>
49 #include <openssl/dh.h>
50 #include <openssl/engine.h>
51 #include <openssl/async.h>
52 #include <openssl/ct.h>
54 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
56 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
58 * evil casts, but these functions are only called if there's a library
61 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
62 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
63 ssl_undefined_function
,
64 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
65 ssl_undefined_function
,
66 (int (*)(SSL
*, int))ssl_undefined_function
,
67 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
68 ssl_undefined_function
,
69 NULL
, /* client_finished_label */
70 0, /* client_finished_label_len */
71 NULL
, /* server_finished_label */
72 0, /* server_finished_label_len */
73 (int (*)(int))ssl_undefined_function
,
74 (int (*)(SSL
*, unsigned char *, size_t, const char *,
75 size_t, const unsigned char *, size_t,
76 int use_context
))ssl_undefined_function
,
79 struct ssl_async_args
{
83 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
85 int (*func_read
) (SSL
*, void *, size_t, size_t *);
86 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
87 int (*func_other
) (SSL
*);
97 DANETLS_MATCHING_FULL
, 0, NID_undef
100 DANETLS_MATCHING_2256
, 1, NID_sha256
103 DANETLS_MATCHING_2512
, 2, NID_sha512
107 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
109 const EVP_MD
**mdevp
;
111 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
112 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
115 if (dctx
->mdevp
!= NULL
)
118 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
119 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
121 if (mdord
== NULL
|| mdevp
== NULL
) {
124 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
128 /* Install default entries */
129 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
132 if (dane_mds
[i
].nid
== NID_undef
||
133 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
135 mdevp
[dane_mds
[i
].mtype
] = md
;
136 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
146 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
148 OPENSSL_free(dctx
->mdevp
);
151 OPENSSL_free(dctx
->mdord
);
156 static void tlsa_free(danetls_record
*t
)
160 OPENSSL_free(t
->data
);
161 EVP_PKEY_free(t
->spki
);
165 static void dane_final(SSL_DANE
*dane
)
167 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
170 sk_X509_pop_free(dane
->certs
, X509_free
);
173 X509_free(dane
->mcert
);
181 * dane_copy - Copy dane configuration, sans verification state.
183 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
188 if (!DANETLS_ENABLED(&from
->dane
))
191 dane_final(&to
->dane
);
192 to
->dane
.flags
= from
->dane
.flags
;
193 to
->dane
.dctx
= &to
->ctx
->dane
;
194 to
->dane
.trecs
= sk_danetls_record_new_null();
196 if (to
->dane
.trecs
== NULL
) {
197 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
201 num
= sk_danetls_record_num(from
->dane
.trecs
);
202 for (i
= 0; i
< num
; ++i
) {
203 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
205 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
206 t
->data
, t
->dlen
) <= 0)
212 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
213 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
217 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
218 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
222 if (mtype
> dctx
->mdmax
) {
223 const EVP_MD
**mdevp
;
225 int n
= ((int)mtype
) + 1;
227 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
229 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
234 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
236 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
241 /* Zero-fill any gaps */
242 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
250 dctx
->mdevp
[mtype
] = md
;
251 /* Coerce ordinal of disabled matching types to 0 */
252 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
257 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
259 if (mtype
> dane
->dctx
->mdmax
)
261 return dane
->dctx
->mdevp
[mtype
];
264 static int dane_tlsa_add(SSL_DANE
*dane
,
267 uint8_t mtype
, unsigned char *data
, size_t dlen
)
270 const EVP_MD
*md
= NULL
;
271 int ilen
= (int)dlen
;
275 if (dane
->trecs
== NULL
) {
276 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
280 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
281 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
285 if (usage
> DANETLS_USAGE_LAST
) {
286 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
290 if (selector
> DANETLS_SELECTOR_LAST
) {
291 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
295 if (mtype
!= DANETLS_MATCHING_FULL
) {
296 md
= tlsa_md_get(dane
, mtype
);
298 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
303 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
304 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
308 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
312 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
313 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
318 t
->selector
= selector
;
320 t
->data
= OPENSSL_malloc(dlen
);
321 if (t
->data
== NULL
) {
323 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
326 memcpy(t
->data
, data
, dlen
);
329 /* Validate and cache full certificate or public key */
330 if (mtype
== DANETLS_MATCHING_FULL
) {
331 const unsigned char *p
= data
;
333 EVP_PKEY
*pkey
= NULL
;
336 case DANETLS_SELECTOR_CERT
:
337 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
338 dlen
!= (size_t)(p
- data
)) {
340 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
343 if (X509_get0_pubkey(cert
) == NULL
) {
345 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
349 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
355 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
356 * records that contain full certificates of trust-anchors that are
357 * not present in the wire chain. For usage PKIX-TA(0), we augment
358 * the chain with untrusted Full(0) certificates from DNS, in case
359 * they are missing from the chain.
361 if ((dane
->certs
== NULL
&&
362 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
363 !sk_X509_push(dane
->certs
, cert
)) {
364 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
371 case DANETLS_SELECTOR_SPKI
:
372 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
373 dlen
!= (size_t)(p
- data
)) {
375 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
380 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
381 * records that contain full bare keys of trust-anchors that are
382 * not present in the wire chain.
384 if (usage
== DANETLS_USAGE_DANE_TA
)
393 * Find the right insertion point for the new record.
395 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
396 * they can be processed first, as they require no chain building, and no
397 * expiration or hostname checks. Because DANE-EE(3) is numerically
398 * largest, this is accomplished via descending sort by "usage".
400 * We also sort in descending order by matching ordinal to simplify
401 * the implementation of digest agility in the verification code.
403 * The choice of order for the selector is not significant, so we
404 * use the same descending order for consistency.
406 num
= sk_danetls_record_num(dane
->trecs
);
407 for (i
= 0; i
< num
; ++i
) {
408 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
410 if (rec
->usage
> usage
)
412 if (rec
->usage
< usage
)
414 if (rec
->selector
> selector
)
416 if (rec
->selector
< selector
)
418 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
423 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
425 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
428 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
433 static void clear_ciphers(SSL
*s
)
435 /* clear the current cipher */
436 ssl_clear_cipher_ctx(s
);
437 ssl_clear_hash_ctx(&s
->read_hash
);
438 ssl_clear_hash_ctx(&s
->write_hash
);
441 int SSL_clear(SSL
*s
)
443 if (s
->method
== NULL
) {
444 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
448 if (ssl_clear_bad_session(s
)) {
449 SSL_SESSION_free(s
->session
);
457 if (s
->renegotiate
) {
458 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
462 ossl_statem_clear(s
);
464 s
->version
= s
->method
->version
;
465 s
->client_version
= s
->version
;
466 s
->rwstate
= SSL_NOTHING
;
468 BUF_MEM_free(s
->init_buf
);
473 s
->key_update
= SSL_KEY_UPDATE_NONE
;
475 /* Reset DANE verification result state */
478 X509_free(s
->dane
.mcert
);
479 s
->dane
.mcert
= NULL
;
480 s
->dane
.mtlsa
= NULL
;
482 /* Clear the verification result peername */
483 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
486 * Check to see if we were changed into a different method, if so, revert
487 * back if we are not doing session-id reuse.
489 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
490 && (s
->method
!= s
->ctx
->method
)) {
491 s
->method
->ssl_free(s
);
492 s
->method
= s
->ctx
->method
;
493 if (!s
->method
->ssl_new(s
))
496 if (!s
->method
->ssl_clear(s
))
500 RECORD_LAYER_clear(&s
->rlayer
);
505 /** Used to change an SSL_CTXs default SSL method type */
506 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
508 STACK_OF(SSL_CIPHER
) *sk
;
512 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
513 &(ctx
->cipher_list_by_id
),
514 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
515 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
516 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
522 SSL
*SSL_new(SSL_CTX
*ctx
)
527 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
530 if (ctx
->method
== NULL
) {
531 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
535 s
= OPENSSL_zalloc(sizeof(*s
));
539 s
->lock
= CRYPTO_THREAD_lock_new();
540 if (s
->lock
== NULL
) {
541 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
546 RECORD_LAYER_init(&s
->rlayer
, s
);
548 s
->options
= ctx
->options
;
549 s
->dane
.flags
= ctx
->dane
.flags
;
550 s
->min_proto_version
= ctx
->min_proto_version
;
551 s
->max_proto_version
= ctx
->max_proto_version
;
553 s
->max_cert_list
= ctx
->max_cert_list
;
555 s
->max_early_data
= ctx
->max_early_data
;
558 * Earlier library versions used to copy the pointer to the CERT, not
559 * its contents; only when setting new parameters for the per-SSL
560 * copy, ssl_cert_new would be called (and the direct reference to
561 * the per-SSL_CTX settings would be lost, but those still were
562 * indirectly accessed for various purposes, and for that reason they
563 * used to be known as s->ctx->default_cert). Now we don't look at the
564 * SSL_CTX's CERT after having duplicated it once.
566 s
->cert
= ssl_cert_dup(ctx
->cert
);
570 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
571 s
->msg_callback
= ctx
->msg_callback
;
572 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
573 s
->verify_mode
= ctx
->verify_mode
;
574 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
575 s
->record_padding_cb
= ctx
->record_padding_cb
;
576 s
->record_padding_arg
= ctx
->record_padding_arg
;
577 s
->block_padding
= ctx
->block_padding
;
578 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
579 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
581 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
582 s
->verify_callback
= ctx
->default_verify_callback
;
583 s
->generate_session_id
= ctx
->generate_session_id
;
585 s
->param
= X509_VERIFY_PARAM_new();
586 if (s
->param
== NULL
)
588 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
589 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
590 s
->max_send_fragment
= ctx
->max_send_fragment
;
591 s
->split_send_fragment
= ctx
->split_send_fragment
;
592 s
->max_pipelines
= ctx
->max_pipelines
;
593 if (s
->max_pipelines
> 1)
594 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
595 if (ctx
->default_read_buf_len
> 0)
596 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
601 s
->ext
.debug_arg
= NULL
;
602 s
->ext
.ticket_expected
= 0;
603 s
->ext
.status_type
= ctx
->ext
.status_type
;
604 s
->ext
.status_expected
= 0;
605 s
->ext
.ocsp
.ids
= NULL
;
606 s
->ext
.ocsp
.exts
= NULL
;
607 s
->ext
.ocsp
.resp
= NULL
;
608 s
->ext
.ocsp
.resp_len
= 0;
610 s
->session_ctx
= ctx
;
611 #ifndef OPENSSL_NO_EC
612 if (ctx
->ext
.ecpointformats
) {
613 s
->ext
.ecpointformats
=
614 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
615 ctx
->ext
.ecpointformats_len
);
616 if (!s
->ext
.ecpointformats
)
618 s
->ext
.ecpointformats_len
=
619 ctx
->ext
.ecpointformats_len
;
621 if (ctx
->ext
.supportedgroups
) {
622 s
->ext
.supportedgroups
=
623 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
624 ctx
->ext
.supportedgroups_len
);
625 if (!s
->ext
.supportedgroups
)
627 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
630 #ifndef OPENSSL_NO_NEXTPROTONEG
634 if (s
->ctx
->ext
.alpn
) {
635 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
636 if (s
->ext
.alpn
== NULL
)
638 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
639 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
642 s
->verified_chain
= NULL
;
643 s
->verify_result
= X509_V_OK
;
645 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
646 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
648 s
->method
= ctx
->method
;
650 s
->key_update
= SSL_KEY_UPDATE_NONE
;
652 if (!s
->method
->ssl_new(s
))
655 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
660 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
663 #ifndef OPENSSL_NO_PSK
664 s
->psk_client_callback
= ctx
->psk_client_callback
;
665 s
->psk_server_callback
= ctx
->psk_server_callback
;
670 #ifndef OPENSSL_NO_CT
671 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
672 ctx
->ct_validation_callback_arg
))
679 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
683 int SSL_is_dtls(const SSL
*s
)
685 return SSL_IS_DTLS(s
) ? 1 : 0;
688 int SSL_up_ref(SSL
*s
)
692 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
695 REF_PRINT_COUNT("SSL", s
);
696 REF_ASSERT_ISNT(i
< 2);
697 return ((i
> 1) ? 1 : 0);
700 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
701 unsigned int sid_ctx_len
)
703 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
704 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
705 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
708 ctx
->sid_ctx_length
= sid_ctx_len
;
709 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
714 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
715 unsigned int sid_ctx_len
)
717 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
718 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
719 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
722 ssl
->sid_ctx_length
= sid_ctx_len
;
723 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
728 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
730 CRYPTO_THREAD_write_lock(ctx
->lock
);
731 ctx
->generate_session_id
= cb
;
732 CRYPTO_THREAD_unlock(ctx
->lock
);
736 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
738 CRYPTO_THREAD_write_lock(ssl
->lock
);
739 ssl
->generate_session_id
= cb
;
740 CRYPTO_THREAD_unlock(ssl
->lock
);
744 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
748 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
749 * we can "construct" a session to give us the desired check - i.e. to
750 * find if there's a session in the hash table that would conflict with
751 * any new session built out of this id/id_len and the ssl_version in use
756 if (id_len
> sizeof r
.session_id
)
759 r
.ssl_version
= ssl
->version
;
760 r
.session_id_length
= id_len
;
761 memcpy(r
.session_id
, id
, id_len
);
763 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
764 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
765 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
769 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
771 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
774 int SSL_set_purpose(SSL
*s
, int purpose
)
776 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
779 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
781 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
784 int SSL_set_trust(SSL
*s
, int trust
)
786 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
789 int SSL_set1_host(SSL
*s
, const char *hostname
)
791 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
794 int SSL_add1_host(SSL
*s
, const char *hostname
)
796 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
799 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
801 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
804 const char *SSL_get0_peername(SSL
*s
)
806 return X509_VERIFY_PARAM_get0_peername(s
->param
);
809 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
811 return dane_ctx_enable(&ctx
->dane
);
814 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
816 unsigned long orig
= ctx
->dane
.flags
;
818 ctx
->dane
.flags
|= flags
;
822 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
824 unsigned long orig
= ctx
->dane
.flags
;
826 ctx
->dane
.flags
&= ~flags
;
830 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
832 SSL_DANE
*dane
= &s
->dane
;
834 if (s
->ctx
->dane
.mdmax
== 0) {
835 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
838 if (dane
->trecs
!= NULL
) {
839 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
844 * Default SNI name. This rejects empty names, while set1_host below
845 * accepts them and disables host name checks. To avoid side-effects with
846 * invalid input, set the SNI name first.
848 if (s
->ext
.hostname
== NULL
) {
849 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
850 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
855 /* Primary RFC6125 reference identifier */
856 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
857 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
863 dane
->dctx
= &s
->ctx
->dane
;
864 dane
->trecs
= sk_danetls_record_new_null();
866 if (dane
->trecs
== NULL
) {
867 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
873 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
875 unsigned long orig
= ssl
->dane
.flags
;
877 ssl
->dane
.flags
|= flags
;
881 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
883 unsigned long orig
= ssl
->dane
.flags
;
885 ssl
->dane
.flags
&= ~flags
;
889 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
891 SSL_DANE
*dane
= &s
->dane
;
893 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
897 *mcert
= dane
->mcert
;
899 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
904 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
905 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
907 SSL_DANE
*dane
= &s
->dane
;
909 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
913 *usage
= dane
->mtlsa
->usage
;
915 *selector
= dane
->mtlsa
->selector
;
917 *mtype
= dane
->mtlsa
->mtype
;
919 *data
= dane
->mtlsa
->data
;
921 *dlen
= dane
->mtlsa
->dlen
;
926 SSL_DANE
*SSL_get0_dane(SSL
*s
)
931 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
932 uint8_t mtype
, unsigned char *data
, size_t dlen
)
934 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
937 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
940 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
943 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
945 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
948 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
950 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
953 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
958 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
963 void SSL_certs_clear(SSL
*s
)
965 ssl_cert_clear_certs(s
->cert
);
968 void SSL_free(SSL
*s
)
975 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
976 REF_PRINT_COUNT("SSL", s
);
979 REF_ASSERT_ISNT(i
< 0);
981 X509_VERIFY_PARAM_free(s
->param
);
982 dane_final(&s
->dane
);
983 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
985 /* Ignore return value */
986 ssl_free_wbio_buffer(s
);
988 BIO_free_all(s
->wbio
);
989 BIO_free_all(s
->rbio
);
991 BUF_MEM_free(s
->init_buf
);
993 /* add extra stuff */
994 sk_SSL_CIPHER_free(s
->cipher_list
);
995 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
997 /* Make the next call work :-) */
998 if (s
->session
!= NULL
) {
999 ssl_clear_bad_session(s
);
1000 SSL_SESSION_free(s
->session
);
1005 ssl_cert_free(s
->cert
);
1006 /* Free up if allocated */
1008 OPENSSL_free(s
->ext
.hostname
);
1009 SSL_CTX_free(s
->session_ctx
);
1010 #ifndef OPENSSL_NO_EC
1011 OPENSSL_free(s
->ext
.ecpointformats
);
1012 OPENSSL_free(s
->ext
.supportedgroups
);
1013 #endif /* OPENSSL_NO_EC */
1014 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1015 #ifndef OPENSSL_NO_OCSP
1016 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1018 #ifndef OPENSSL_NO_CT
1019 SCT_LIST_free(s
->scts
);
1020 OPENSSL_free(s
->ext
.scts
);
1022 OPENSSL_free(s
->ext
.ocsp
.resp
);
1023 OPENSSL_free(s
->ext
.alpn
);
1024 OPENSSL_free(s
->ext
.tls13_cookie
);
1025 OPENSSL_free(s
->clienthello
);
1027 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1029 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1031 if (s
->method
!= NULL
)
1032 s
->method
->ssl_free(s
);
1034 RECORD_LAYER_release(&s
->rlayer
);
1036 SSL_CTX_free(s
->ctx
);
1038 ASYNC_WAIT_CTX_free(s
->waitctx
);
1040 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1041 OPENSSL_free(s
->ext
.npn
);
1044 #ifndef OPENSSL_NO_SRTP
1045 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1048 CRYPTO_THREAD_lock_free(s
->lock
);
1053 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1055 BIO_free_all(s
->rbio
);
1059 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1062 * If the output buffering BIO is still in place, remove it
1064 if (s
->bbio
!= NULL
)
1065 s
->wbio
= BIO_pop(s
->wbio
);
1067 BIO_free_all(s
->wbio
);
1070 /* Re-attach |bbio| to the new |wbio|. */
1071 if (s
->bbio
!= NULL
)
1072 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1075 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1078 * For historical reasons, this function has many different cases in
1079 * ownership handling.
1082 /* If nothing has changed, do nothing */
1083 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1087 * If the two arguments are equal then one fewer reference is granted by the
1088 * caller than we want to take
1090 if (rbio
!= NULL
&& rbio
== wbio
)
1094 * If only the wbio is changed only adopt one reference.
1096 if (rbio
== SSL_get_rbio(s
)) {
1097 SSL_set0_wbio(s
, wbio
);
1101 * There is an asymmetry here for historical reasons. If only the rbio is
1102 * changed AND the rbio and wbio were originally different, then we only
1103 * adopt one reference.
1105 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1106 SSL_set0_rbio(s
, rbio
);
1110 /* Otherwise, adopt both references. */
1111 SSL_set0_rbio(s
, rbio
);
1112 SSL_set0_wbio(s
, wbio
);
1115 BIO
*SSL_get_rbio(const SSL
*s
)
1120 BIO
*SSL_get_wbio(const SSL
*s
)
1122 if (s
->bbio
!= NULL
) {
1124 * If |bbio| is active, the true caller-configured BIO is its
1127 return BIO_next(s
->bbio
);
1132 int SSL_get_fd(const SSL
*s
)
1134 return SSL_get_rfd(s
);
1137 int SSL_get_rfd(const SSL
*s
)
1142 b
= SSL_get_rbio(s
);
1143 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1145 BIO_get_fd(r
, &ret
);
1149 int SSL_get_wfd(const SSL
*s
)
1154 b
= SSL_get_wbio(s
);
1155 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1157 BIO_get_fd(r
, &ret
);
1161 #ifndef OPENSSL_NO_SOCK
1162 int SSL_set_fd(SSL
*s
, int fd
)
1167 bio
= BIO_new(BIO_s_socket());
1170 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1173 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1174 SSL_set_bio(s
, bio
, bio
);
1180 int SSL_set_wfd(SSL
*s
, int fd
)
1182 BIO
*rbio
= SSL_get_rbio(s
);
1184 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1185 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1186 BIO
*bio
= BIO_new(BIO_s_socket());
1189 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1192 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1193 SSL_set0_wbio(s
, bio
);
1196 SSL_set0_wbio(s
, rbio
);
1201 int SSL_set_rfd(SSL
*s
, int fd
)
1203 BIO
*wbio
= SSL_get_wbio(s
);
1205 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1206 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1207 BIO
*bio
= BIO_new(BIO_s_socket());
1210 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1213 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1214 SSL_set0_rbio(s
, bio
);
1217 SSL_set0_rbio(s
, wbio
);
1224 /* return length of latest Finished message we sent, copy to 'buf' */
1225 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1229 if (s
->s3
!= NULL
) {
1230 ret
= s
->s3
->tmp
.finish_md_len
;
1233 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1238 /* return length of latest Finished message we expected, copy to 'buf' */
1239 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1243 if (s
->s3
!= NULL
) {
1244 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1247 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1252 int SSL_get_verify_mode(const SSL
*s
)
1254 return (s
->verify_mode
);
1257 int SSL_get_verify_depth(const SSL
*s
)
1259 return X509_VERIFY_PARAM_get_depth(s
->param
);
1262 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1263 return (s
->verify_callback
);
1266 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1268 return (ctx
->verify_mode
);
1271 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1273 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1276 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1277 return (ctx
->default_verify_callback
);
1280 void SSL_set_verify(SSL
*s
, int mode
,
1281 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1283 s
->verify_mode
= mode
;
1284 if (callback
!= NULL
)
1285 s
->verify_callback
= callback
;
1288 void SSL_set_verify_depth(SSL
*s
, int depth
)
1290 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1293 void SSL_set_read_ahead(SSL
*s
, int yes
)
1295 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1298 int SSL_get_read_ahead(const SSL
*s
)
1300 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1303 int SSL_pending(const SSL
*s
)
1305 size_t pending
= s
->method
->ssl_pending(s
);
1308 * SSL_pending cannot work properly if read-ahead is enabled
1309 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1310 * impossible to fix since SSL_pending cannot report errors that may be
1311 * observed while scanning the new data. (Note that SSL_pending() is
1312 * often used as a boolean value, so we'd better not return -1.)
1314 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1315 * we just return INT_MAX.
1317 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1320 int SSL_has_pending(const SSL
*s
)
1323 * Similar to SSL_pending() but returns a 1 to indicate that we have
1324 * unprocessed data available or 0 otherwise (as opposed to the number of
1325 * bytes available). Unlike SSL_pending() this will take into account
1326 * read_ahead data. A 1 return simply indicates that we have unprocessed
1327 * data. That data may not result in any application data, or we may fail
1328 * to parse the records for some reason.
1330 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1333 return RECORD_LAYER_read_pending(&s
->rlayer
);
1336 X509
*SSL_get_peer_certificate(const SSL
*s
)
1340 if ((s
== NULL
) || (s
->session
== NULL
))
1343 r
= s
->session
->peer
;
1353 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1357 if ((s
== NULL
) || (s
->session
== NULL
))
1360 r
= s
->session
->peer_chain
;
1363 * If we are a client, cert_chain includes the peer's own certificate; if
1364 * we are a server, it does not.
1371 * Now in theory, since the calling process own 't' it should be safe to
1372 * modify. We need to be able to read f without being hassled
1374 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1377 /* Do we need to to SSL locking? */
1378 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1383 * what if we are setup for one protocol version but want to talk another
1385 if (t
->method
!= f
->method
) {
1386 t
->method
->ssl_free(t
);
1387 t
->method
= f
->method
;
1388 if (t
->method
->ssl_new(t
) == 0)
1392 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1393 ssl_cert_free(t
->cert
);
1395 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1402 /* Fix this so it checks all the valid key/cert options */
1403 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1405 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1406 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1409 if (ctx
->cert
->key
->privatekey
== NULL
) {
1410 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1413 return (X509_check_private_key
1414 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1417 /* Fix this function so that it takes an optional type parameter */
1418 int SSL_check_private_key(const SSL
*ssl
)
1421 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1424 if (ssl
->cert
->key
->x509
== NULL
) {
1425 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1428 if (ssl
->cert
->key
->privatekey
== NULL
) {
1429 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1432 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1433 ssl
->cert
->key
->privatekey
));
1436 int SSL_waiting_for_async(SSL
*s
)
1444 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1446 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1450 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1453 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1454 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1456 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1460 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1464 int SSL_accept(SSL
*s
)
1466 if (s
->handshake_func
== NULL
) {
1467 /* Not properly initialized yet */
1468 SSL_set_accept_state(s
);
1471 return SSL_do_handshake(s
);
1474 int SSL_connect(SSL
*s
)
1476 if (s
->handshake_func
== NULL
) {
1477 /* Not properly initialized yet */
1478 SSL_set_connect_state(s
);
1481 return SSL_do_handshake(s
);
1484 long SSL_get_default_timeout(const SSL
*s
)
1486 return (s
->method
->get_timeout());
1489 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1490 int (*func
) (void *))
1493 if (s
->waitctx
== NULL
) {
1494 s
->waitctx
= ASYNC_WAIT_CTX_new();
1495 if (s
->waitctx
== NULL
)
1498 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1499 sizeof(struct ssl_async_args
))) {
1501 s
->rwstate
= SSL_NOTHING
;
1502 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1505 s
->rwstate
= SSL_ASYNC_PAUSED
;
1508 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1514 s
->rwstate
= SSL_NOTHING
;
1515 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1516 /* Shouldn't happen */
1521 static int ssl_io_intern(void *vargs
)
1523 struct ssl_async_args
*args
;
1528 args
= (struct ssl_async_args
*)vargs
;
1532 switch (args
->type
) {
1534 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1536 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1538 return args
->f
.func_other(s
);
1543 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1545 if (s
->handshake_func
== NULL
) {
1546 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1550 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1551 s
->rwstate
= SSL_NOTHING
;
1555 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1556 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1557 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1561 * If we are a client and haven't received the ServerHello etc then we
1564 ossl_statem_check_finish_init(s
, 0);
1566 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1567 struct ssl_async_args args
;
1573 args
.type
= READFUNC
;
1574 args
.f
.func_read
= s
->method
->ssl_read
;
1576 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1577 *readbytes
= s
->asyncrw
;
1580 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1584 int SSL_read(SSL
*s
, void *buf
, int num
)
1590 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1594 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1597 * The cast is safe here because ret should be <= INT_MAX because num is
1601 ret
= (int)readbytes
;
1606 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1608 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1615 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1620 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1621 return SSL_READ_EARLY_DATA_ERROR
;
1624 switch (s
->early_data_state
) {
1625 case SSL_EARLY_DATA_NONE
:
1626 if (!SSL_in_before(s
)) {
1627 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1628 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1629 return SSL_READ_EARLY_DATA_ERROR
;
1633 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1634 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1635 ret
= SSL_accept(s
);
1638 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1639 return SSL_READ_EARLY_DATA_ERROR
;
1643 case SSL_EARLY_DATA_READ_RETRY
:
1644 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1645 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1646 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1648 * State machine will update early_data_state to
1649 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1652 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1653 != SSL_EARLY_DATA_FINISHED_READING
)) {
1654 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1655 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1656 : SSL_READ_EARLY_DATA_ERROR
;
1659 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1662 return SSL_READ_EARLY_DATA_FINISH
;
1665 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1666 return SSL_READ_EARLY_DATA_ERROR
;
1670 int SSL_get_early_data_status(const SSL
*s
)
1672 return s
->ext
.early_data
;
1675 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1677 if (s
->handshake_func
== NULL
) {
1678 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1682 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1685 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1686 struct ssl_async_args args
;
1692 args
.type
= READFUNC
;
1693 args
.f
.func_read
= s
->method
->ssl_peek
;
1695 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1696 *readbytes
= s
->asyncrw
;
1699 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1703 int SSL_peek(SSL
*s
, void *buf
, int num
)
1709 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1713 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1716 * The cast is safe here because ret should be <= INT_MAX because num is
1720 ret
= (int)readbytes
;
1726 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1728 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1735 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1737 if (s
->handshake_func
== NULL
) {
1738 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1742 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1743 s
->rwstate
= SSL_NOTHING
;
1744 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1748 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1749 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1750 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1751 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1754 /* If we are a client and haven't sent the Finished we better do that */
1755 ossl_statem_check_finish_init(s
, 1);
1757 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1759 struct ssl_async_args args
;
1762 args
.buf
= (void *)buf
;
1764 args
.type
= WRITEFUNC
;
1765 args
.f
.func_write
= s
->method
->ssl_write
;
1767 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1768 *written
= s
->asyncrw
;
1771 return s
->method
->ssl_write(s
, buf
, num
, written
);
1775 int SSL_write(SSL
*s
, const void *buf
, int num
)
1781 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1785 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1788 * The cast is safe here because ret should be <= INT_MAX because num is
1797 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1799 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1806 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1808 int ret
, early_data_state
;
1810 switch (s
->early_data_state
) {
1811 case SSL_EARLY_DATA_NONE
:
1813 || !SSL_in_before(s
)
1814 || s
->session
== NULL
1815 || s
->session
->ext
.max_early_data
== 0) {
1816 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1817 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1822 case SSL_EARLY_DATA_CONNECT_RETRY
:
1823 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1824 ret
= SSL_connect(s
);
1827 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1832 case SSL_EARLY_DATA_WRITE_RETRY
:
1833 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1834 ret
= SSL_write_ex(s
, buf
, num
, written
);
1835 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1838 case SSL_EARLY_DATA_FINISHED_READING
:
1839 case SSL_EARLY_DATA_READ_RETRY
:
1840 early_data_state
= s
->early_data_state
;
1841 /* We are a server writing to an unauthenticated client */
1842 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1843 ret
= SSL_write_ex(s
, buf
, num
, written
);
1844 s
->early_data_state
= early_data_state
;
1848 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1853 int SSL_shutdown(SSL
*s
)
1856 * Note that this function behaves differently from what one might
1857 * expect. Return values are 0 for no success (yet), 1 for success; but
1858 * calling it once is usually not enough, even if blocking I/O is used
1859 * (see ssl3_shutdown).
1862 if (s
->handshake_func
== NULL
) {
1863 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1867 if (!SSL_in_init(s
)) {
1868 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1869 struct ssl_async_args args
;
1872 args
.type
= OTHERFUNC
;
1873 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1875 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1877 return s
->method
->ssl_shutdown(s
);
1880 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1885 int SSL_key_update(SSL
*s
, int updatetype
)
1888 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1889 * negotiated, and that it is appropriate to call SSL_key_update() instead
1890 * of SSL_renegotiate().
1892 if (!SSL_IS_TLS13(s
)) {
1893 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1897 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1898 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1899 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1903 if (!SSL_is_init_finished(s
)) {
1904 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1908 ossl_statem_set_in_init(s
, 1);
1909 s
->key_update
= updatetype
;
1913 int SSL_get_key_update_type(SSL
*s
)
1915 return s
->key_update
;
1918 int SSL_renegotiate(SSL
*s
)
1920 if (SSL_IS_TLS13(s
)) {
1921 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1925 if (s
->renegotiate
== 0)
1930 return (s
->method
->ssl_renegotiate(s
));
1933 int SSL_renegotiate_abbreviated(SSL
*s
)
1935 if (SSL_IS_TLS13(s
))
1938 if (s
->renegotiate
== 0)
1943 return (s
->method
->ssl_renegotiate(s
));
1946 int SSL_renegotiate_pending(SSL
*s
)
1949 * becomes true when negotiation is requested; false again once a
1950 * handshake has finished
1952 return (s
->renegotiate
!= 0);
1955 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1960 case SSL_CTRL_GET_READ_AHEAD
:
1961 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1962 case SSL_CTRL_SET_READ_AHEAD
:
1963 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1964 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1967 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1968 s
->msg_callback_arg
= parg
;
1972 return (s
->mode
|= larg
);
1973 case SSL_CTRL_CLEAR_MODE
:
1974 return (s
->mode
&= ~larg
);
1975 case SSL_CTRL_GET_MAX_CERT_LIST
:
1976 return (long)(s
->max_cert_list
);
1977 case SSL_CTRL_SET_MAX_CERT_LIST
:
1980 l
= (long)s
->max_cert_list
;
1981 s
->max_cert_list
= (size_t)larg
;
1983 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1984 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1986 s
->max_send_fragment
= larg
;
1987 if (s
->max_send_fragment
< s
->split_send_fragment
)
1988 s
->split_send_fragment
= s
->max_send_fragment
;
1990 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1991 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1993 s
->split_send_fragment
= larg
;
1995 case SSL_CTRL_SET_MAX_PIPELINES
:
1996 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1998 s
->max_pipelines
= larg
;
2000 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2002 case SSL_CTRL_GET_RI_SUPPORT
:
2004 return s
->s3
->send_connection_binding
;
2007 case SSL_CTRL_CERT_FLAGS
:
2008 return (s
->cert
->cert_flags
|= larg
);
2009 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2010 return (s
->cert
->cert_flags
&= ~larg
);
2012 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2014 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2016 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2017 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2019 return TLS_CIPHER_LEN
;
2021 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2022 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2024 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2028 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2029 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2030 &s
->min_proto_version
);
2031 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2032 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2033 &s
->max_proto_version
);
2035 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2039 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2042 case SSL_CTRL_SET_MSG_CALLBACK
:
2043 s
->msg_callback
= (void (*)
2044 (int write_p
, int version
, int content_type
,
2045 const void *buf
, size_t len
, SSL
*ssl
,
2050 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2054 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2056 return ctx
->sessions
;
2059 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2062 /* For some cases with ctx == NULL perform syntax checks */
2065 #ifndef OPENSSL_NO_EC
2066 case SSL_CTRL_SET_GROUPS_LIST
:
2067 return tls1_set_groups_list(NULL
, NULL
, parg
);
2069 case SSL_CTRL_SET_SIGALGS_LIST
:
2070 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2071 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2078 case SSL_CTRL_GET_READ_AHEAD
:
2079 return (ctx
->read_ahead
);
2080 case SSL_CTRL_SET_READ_AHEAD
:
2081 l
= ctx
->read_ahead
;
2082 ctx
->read_ahead
= larg
;
2085 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2086 ctx
->msg_callback_arg
= parg
;
2089 case SSL_CTRL_GET_MAX_CERT_LIST
:
2090 return (long)(ctx
->max_cert_list
);
2091 case SSL_CTRL_SET_MAX_CERT_LIST
:
2094 l
= (long)ctx
->max_cert_list
;
2095 ctx
->max_cert_list
= (size_t)larg
;
2098 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2101 l
= (long)ctx
->session_cache_size
;
2102 ctx
->session_cache_size
= (size_t)larg
;
2104 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2105 return (long)(ctx
->session_cache_size
);
2106 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2107 l
= ctx
->session_cache_mode
;
2108 ctx
->session_cache_mode
= larg
;
2110 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2111 return (ctx
->session_cache_mode
);
2113 case SSL_CTRL_SESS_NUMBER
:
2114 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2115 case SSL_CTRL_SESS_CONNECT
:
2116 return (ctx
->stats
.sess_connect
);
2117 case SSL_CTRL_SESS_CONNECT_GOOD
:
2118 return (ctx
->stats
.sess_connect_good
);
2119 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2120 return (ctx
->stats
.sess_connect_renegotiate
);
2121 case SSL_CTRL_SESS_ACCEPT
:
2122 return (ctx
->stats
.sess_accept
);
2123 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2124 return (ctx
->stats
.sess_accept_good
);
2125 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2126 return (ctx
->stats
.sess_accept_renegotiate
);
2127 case SSL_CTRL_SESS_HIT
:
2128 return (ctx
->stats
.sess_hit
);
2129 case SSL_CTRL_SESS_CB_HIT
:
2130 return (ctx
->stats
.sess_cb_hit
);
2131 case SSL_CTRL_SESS_MISSES
:
2132 return (ctx
->stats
.sess_miss
);
2133 case SSL_CTRL_SESS_TIMEOUTS
:
2134 return (ctx
->stats
.sess_timeout
);
2135 case SSL_CTRL_SESS_CACHE_FULL
:
2136 return (ctx
->stats
.sess_cache_full
);
2138 return (ctx
->mode
|= larg
);
2139 case SSL_CTRL_CLEAR_MODE
:
2140 return (ctx
->mode
&= ~larg
);
2141 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2142 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2144 ctx
->max_send_fragment
= larg
;
2145 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2146 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2148 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2149 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2151 ctx
->split_send_fragment
= larg
;
2153 case SSL_CTRL_SET_MAX_PIPELINES
:
2154 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2156 ctx
->max_pipelines
= larg
;
2158 case SSL_CTRL_CERT_FLAGS
:
2159 return (ctx
->cert
->cert_flags
|= larg
);
2160 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2161 return (ctx
->cert
->cert_flags
&= ~larg
);
2162 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2163 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2164 &ctx
->min_proto_version
);
2165 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2166 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2167 &ctx
->max_proto_version
);
2169 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2173 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2176 case SSL_CTRL_SET_MSG_CALLBACK
:
2177 ctx
->msg_callback
= (void (*)
2178 (int write_p
, int version
, int content_type
,
2179 const void *buf
, size_t len
, SSL
*ssl
,
2184 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2188 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2197 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2198 const SSL_CIPHER
*const *bp
)
2200 if ((*ap
)->id
> (*bp
)->id
)
2202 if ((*ap
)->id
< (*bp
)->id
)
2207 /** return a STACK of the ciphers available for the SSL and in order of
2209 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2212 if (s
->cipher_list
!= NULL
) {
2213 return (s
->cipher_list
);
2214 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2215 return (s
->ctx
->cipher_list
);
2221 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2223 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2225 return s
->session
->ciphers
;
2228 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2230 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2232 ciphers
= SSL_get_ciphers(s
);
2235 ssl_set_client_disabled(s
);
2236 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2237 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2238 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2240 sk
= sk_SSL_CIPHER_new_null();
2243 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2244 sk_SSL_CIPHER_free(sk
);
2252 /** return a STACK of the ciphers available for the SSL and in order of
2254 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2257 if (s
->cipher_list_by_id
!= NULL
) {
2258 return (s
->cipher_list_by_id
);
2259 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2260 return (s
->ctx
->cipher_list_by_id
);
2266 /** The old interface to get the same thing as SSL_get_ciphers() */
2267 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2269 const SSL_CIPHER
*c
;
2270 STACK_OF(SSL_CIPHER
) *sk
;
2274 sk
= SSL_get_ciphers(s
);
2275 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2277 c
= sk_SSL_CIPHER_value(sk
, n
);
2283 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2285 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2288 return ctx
->cipher_list
;
2292 /** specify the ciphers to be used by default by the SSL_CTX */
2293 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2295 STACK_OF(SSL_CIPHER
) *sk
;
2297 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2298 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2300 * ssl_create_cipher_list may return an empty stack if it was unable to
2301 * find a cipher matching the given rule string (for example if the rule
2302 * string specifies a cipher which has been disabled). This is not an
2303 * error as far as ssl_create_cipher_list is concerned, and hence
2304 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2308 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2309 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2315 /** specify the ciphers to be used by the SSL */
2316 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2318 STACK_OF(SSL_CIPHER
) *sk
;
2320 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2321 &s
->cipher_list_by_id
, str
, s
->cert
);
2322 /* see comment in SSL_CTX_set_cipher_list */
2325 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2326 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2332 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2335 STACK_OF(SSL_CIPHER
) *sk
;
2336 const SSL_CIPHER
*c
;
2339 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2343 sk
= s
->session
->ciphers
;
2345 if (sk_SSL_CIPHER_num(sk
) == 0)
2348 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2351 c
= sk_SSL_CIPHER_value(sk
, i
);
2352 n
= strlen(c
->name
);
2359 memcpy(p
, c
->name
, n
+ 1);
2368 /** return a servername extension value if provided in Client Hello, or NULL.
2369 * So far, only host_name types are defined (RFC 3546).
2372 const char *SSL_get_servername(const SSL
*s
, const int type
)
2374 if (type
!= TLSEXT_NAMETYPE_host_name
)
2377 return s
->session
&& !s
->ext
.hostname
?
2378 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2381 int SSL_get_servername_type(const SSL
*s
)
2384 && (!s
->ext
.hostname
? s
->session
->
2385 ext
.hostname
: s
->ext
.hostname
))
2386 return TLSEXT_NAMETYPE_host_name
;
2391 * SSL_select_next_proto implements the standard protocol selection. It is
2392 * expected that this function is called from the callback set by
2393 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2394 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2395 * not included in the length. A byte string of length 0 is invalid. No byte
2396 * string may be truncated. The current, but experimental algorithm for
2397 * selecting the protocol is: 1) If the server doesn't support NPN then this
2398 * is indicated to the callback. In this case, the client application has to
2399 * abort the connection or have a default application level protocol. 2) If
2400 * the server supports NPN, but advertises an empty list then the client
2401 * selects the first protocol in its list, but indicates via the API that this
2402 * fallback case was enacted. 3) Otherwise, the client finds the first
2403 * protocol in the server's list that it supports and selects this protocol.
2404 * This is because it's assumed that the server has better information about
2405 * which protocol a client should use. 4) If the client doesn't support any
2406 * of the server's advertised protocols, then this is treated the same as
2407 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2408 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2410 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2411 const unsigned char *server
,
2412 unsigned int server_len
,
2413 const unsigned char *client
, unsigned int client_len
)
2416 const unsigned char *result
;
2417 int status
= OPENSSL_NPN_UNSUPPORTED
;
2420 * For each protocol in server preference order, see if we support it.
2422 for (i
= 0; i
< server_len
;) {
2423 for (j
= 0; j
< client_len
;) {
2424 if (server
[i
] == client
[j
] &&
2425 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2426 /* We found a match */
2427 result
= &server
[i
];
2428 status
= OPENSSL_NPN_NEGOTIATED
;
2438 /* There's no overlap between our protocols and the server's list. */
2440 status
= OPENSSL_NPN_NO_OVERLAP
;
2443 *out
= (unsigned char *)result
+ 1;
2444 *outlen
= result
[0];
2448 #ifndef OPENSSL_NO_NEXTPROTONEG
2450 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2451 * client's requested protocol for this connection and returns 0. If the
2452 * client didn't request any protocol, then *data is set to NULL. Note that
2453 * the client can request any protocol it chooses. The value returned from
2454 * this function need not be a member of the list of supported protocols
2455 * provided by the callback.
2457 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2464 *len
= (unsigned int)s
->ext
.npn_len
;
2469 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2470 * a TLS server needs a list of supported protocols for Next Protocol
2471 * Negotiation. The returned list must be in wire format. The list is
2472 * returned by setting |out| to point to it and |outlen| to its length. This
2473 * memory will not be modified, but one should assume that the SSL* keeps a
2474 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2475 * wishes to advertise. Otherwise, no such extension will be included in the
2478 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2479 SSL_CTX_npn_advertised_cb_func cb
,
2482 ctx
->ext
.npn_advertised_cb
= cb
;
2483 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2487 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2488 * client needs to select a protocol from the server's provided list. |out|
2489 * must be set to point to the selected protocol (which may be within |in|).
2490 * The length of the protocol name must be written into |outlen|. The
2491 * server's advertised protocols are provided in |in| and |inlen|. The
2492 * callback can assume that |in| is syntactically valid. The client must
2493 * select a protocol. It is fatal to the connection if this callback returns
2494 * a value other than SSL_TLSEXT_ERR_OK.
2496 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2497 SSL_CTX_npn_select_cb_func cb
,
2500 ctx
->ext
.npn_select_cb
= cb
;
2501 ctx
->ext
.npn_select_cb_arg
= arg
;
2506 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2507 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2508 * length-prefixed strings). Returns 0 on success.
2510 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2511 unsigned int protos_len
)
2513 OPENSSL_free(ctx
->ext
.alpn
);
2514 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2515 if (ctx
->ext
.alpn
== NULL
) {
2516 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2519 ctx
->ext
.alpn_len
= protos_len
;
2525 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2526 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2527 * length-prefixed strings). Returns 0 on success.
2529 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2530 unsigned int protos_len
)
2532 OPENSSL_free(ssl
->ext
.alpn
);
2533 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2534 if (ssl
->ext
.alpn
== NULL
) {
2535 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2538 ssl
->ext
.alpn_len
= protos_len
;
2544 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2545 * called during ClientHello processing in order to select an ALPN protocol
2546 * from the client's list of offered protocols.
2548 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2549 SSL_CTX_alpn_select_cb_func cb
,
2552 ctx
->ext
.alpn_select_cb
= cb
;
2553 ctx
->ext
.alpn_select_cb_arg
= arg
;
2557 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2558 * On return it sets |*data| to point to |*len| bytes of protocol name
2559 * (not including the leading length-prefix byte). If the server didn't
2560 * respond with a negotiated protocol then |*len| will be zero.
2562 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2567 *data
= ssl
->s3
->alpn_selected
;
2571 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2574 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2575 const char *label
, size_t llen
,
2576 const unsigned char *p
, size_t plen
,
2579 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2582 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2587 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2589 const unsigned char *session_id
= a
->session_id
;
2591 unsigned char tmp_storage
[4];
2593 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2594 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2595 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2596 session_id
= tmp_storage
;
2600 ((unsigned long)session_id
[0]) |
2601 ((unsigned long)session_id
[1] << 8L) |
2602 ((unsigned long)session_id
[2] << 16L) |
2603 ((unsigned long)session_id
[3] << 24L);
2608 * NB: If this function (or indeed the hash function which uses a sort of
2609 * coarser function than this one) is changed, ensure
2610 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2611 * being able to construct an SSL_SESSION that will collide with any existing
2612 * session with a matching session ID.
2614 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2616 if (a
->ssl_version
!= b
->ssl_version
)
2618 if (a
->session_id_length
!= b
->session_id_length
)
2620 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2624 * These wrapper functions should remain rather than redeclaring
2625 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2626 * variable. The reason is that the functions aren't static, they're exposed
2630 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2632 SSL_CTX
*ret
= NULL
;
2635 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2639 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2642 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2643 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2646 ret
= OPENSSL_zalloc(sizeof(*ret
));
2651 ret
->min_proto_version
= 0;
2652 ret
->max_proto_version
= 0;
2653 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2654 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2655 /* We take the system default. */
2656 ret
->session_timeout
= meth
->get_timeout();
2657 ret
->references
= 1;
2658 ret
->lock
= CRYPTO_THREAD_lock_new();
2659 if (ret
->lock
== NULL
) {
2660 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2664 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2665 ret
->verify_mode
= SSL_VERIFY_NONE
;
2666 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2669 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2670 if (ret
->sessions
== NULL
)
2672 ret
->cert_store
= X509_STORE_new();
2673 if (ret
->cert_store
== NULL
)
2675 #ifndef OPENSSL_NO_CT
2676 ret
->ctlog_store
= CTLOG_STORE_new();
2677 if (ret
->ctlog_store
== NULL
)
2680 if (!ssl_create_cipher_list(ret
->method
,
2681 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2682 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2683 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2684 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2688 ret
->param
= X509_VERIFY_PARAM_new();
2689 if (ret
->param
== NULL
)
2692 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2693 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2696 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2697 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2701 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2704 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2707 /* No compression for DTLS */
2708 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2709 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2711 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2712 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2714 /* Setup RFC5077 ticket keys */
2715 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2716 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2717 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2718 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2719 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2720 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2721 ret
->options
|= SSL_OP_NO_TICKET
;
2723 #ifndef OPENSSL_NO_SRP
2724 if (!SSL_CTX_SRP_CTX_init(ret
))
2727 #ifndef OPENSSL_NO_ENGINE
2728 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2729 # define eng_strx(x) #x
2730 # define eng_str(x) eng_strx(x)
2731 /* Use specific client engine automatically... ignore errors */
2734 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2737 ENGINE_load_builtin_engines();
2738 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2740 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2746 * Default is to connect to non-RI servers. When RI is more widely
2747 * deployed might change this.
2749 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2751 * Disable compression by default to prevent CRIME. Applications can
2752 * re-enable compression by configuring
2753 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2754 * or by using the SSL_CONF library.
2756 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2758 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2761 * Default max early data is a fully loaded single record. Could be split
2762 * across multiple records in practice
2764 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2768 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2774 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2778 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2781 REF_PRINT_COUNT("SSL_CTX", ctx
);
2782 REF_ASSERT_ISNT(i
< 2);
2783 return ((i
> 1) ? 1 : 0);
2786 void SSL_CTX_free(SSL_CTX
*a
)
2793 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2794 REF_PRINT_COUNT("SSL_CTX", a
);
2797 REF_ASSERT_ISNT(i
< 0);
2799 X509_VERIFY_PARAM_free(a
->param
);
2800 dane_ctx_final(&a
->dane
);
2803 * Free internal session cache. However: the remove_cb() may reference
2804 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2805 * after the sessions were flushed.
2806 * As the ex_data handling routines might also touch the session cache,
2807 * the most secure solution seems to be: empty (flush) the cache, then
2808 * free ex_data, then finally free the cache.
2809 * (See ticket [openssl.org #212].)
2811 if (a
->sessions
!= NULL
)
2812 SSL_CTX_flush_sessions(a
, 0);
2814 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2815 lh_SSL_SESSION_free(a
->sessions
);
2816 X509_STORE_free(a
->cert_store
);
2817 #ifndef OPENSSL_NO_CT
2818 CTLOG_STORE_free(a
->ctlog_store
);
2820 sk_SSL_CIPHER_free(a
->cipher_list
);
2821 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2822 ssl_cert_free(a
->cert
);
2823 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2824 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2825 a
->comp_methods
= NULL
;
2826 #ifndef OPENSSL_NO_SRTP
2827 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2829 #ifndef OPENSSL_NO_SRP
2830 SSL_CTX_SRP_CTX_free(a
);
2832 #ifndef OPENSSL_NO_ENGINE
2833 ENGINE_finish(a
->client_cert_engine
);
2836 #ifndef OPENSSL_NO_EC
2837 OPENSSL_free(a
->ext
.ecpointformats
);
2838 OPENSSL_free(a
->ext
.supportedgroups
);
2840 OPENSSL_free(a
->ext
.alpn
);
2842 CRYPTO_THREAD_lock_free(a
->lock
);
2847 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2849 ctx
->default_passwd_callback
= cb
;
2852 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2854 ctx
->default_passwd_callback_userdata
= u
;
2857 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2859 return ctx
->default_passwd_callback
;
2862 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2864 return ctx
->default_passwd_callback_userdata
;
2867 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2869 s
->default_passwd_callback
= cb
;
2872 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2874 s
->default_passwd_callback_userdata
= u
;
2877 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2879 return s
->default_passwd_callback
;
2882 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2884 return s
->default_passwd_callback_userdata
;
2887 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2888 int (*cb
) (X509_STORE_CTX
*, void *),
2891 ctx
->app_verify_callback
= cb
;
2892 ctx
->app_verify_arg
= arg
;
2895 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2896 int (*cb
) (int, X509_STORE_CTX
*))
2898 ctx
->verify_mode
= mode
;
2899 ctx
->default_verify_callback
= cb
;
2902 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2904 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2907 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2909 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2912 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2914 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2917 void ssl_set_masks(SSL
*s
)
2920 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2921 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2922 unsigned long mask_k
, mask_a
;
2923 #ifndef OPENSSL_NO_EC
2924 int have_ecc_cert
, ecdsa_ok
;
2929 #ifndef OPENSSL_NO_DH
2930 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2935 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2936 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2937 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2938 #ifndef OPENSSL_NO_EC
2939 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2945 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2946 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2949 #ifndef OPENSSL_NO_GOST
2950 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2951 mask_k
|= SSL_kGOST
;
2952 mask_a
|= SSL_aGOST12
;
2954 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2955 mask_k
|= SSL_kGOST
;
2956 mask_a
|= SSL_aGOST12
;
2958 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2959 mask_k
|= SSL_kGOST
;
2960 mask_a
|= SSL_aGOST01
;
2970 if (rsa_enc
|| rsa_sign
) {
2978 mask_a
|= SSL_aNULL
;
2981 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2982 * depending on the key usage extension.
2984 #ifndef OPENSSL_NO_EC
2985 if (have_ecc_cert
) {
2987 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2988 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2989 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2992 mask_a
|= SSL_aECDSA
;
2996 #ifndef OPENSSL_NO_EC
2997 mask_k
|= SSL_kECDHE
;
3000 #ifndef OPENSSL_NO_PSK
3003 if (mask_k
& SSL_kRSA
)
3004 mask_k
|= SSL_kRSAPSK
;
3005 if (mask_k
& SSL_kDHE
)
3006 mask_k
|= SSL_kDHEPSK
;
3007 if (mask_k
& SSL_kECDHE
)
3008 mask_k
|= SSL_kECDHEPSK
;
3011 s
->s3
->tmp
.mask_k
= mask_k
;
3012 s
->s3
->tmp
.mask_a
= mask_a
;
3015 #ifndef OPENSSL_NO_EC
3017 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3019 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3020 /* key usage, if present, must allow signing */
3021 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3022 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3023 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3027 return 1; /* all checks are ok */
3032 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3033 size_t *serverinfo_length
)
3035 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3036 *serverinfo_length
= 0;
3038 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3041 *serverinfo
= cpk
->serverinfo
;
3042 *serverinfo_length
= cpk
->serverinfo_length
;
3046 void ssl_update_cache(SSL
*s
, int mode
)
3051 * If the session_id_length is 0, we are not supposed to cache it, and it
3052 * would be rather hard to do anyway :-)
3054 if (s
->session
->session_id_length
== 0)
3057 i
= s
->session_ctx
->session_cache_mode
;
3058 if ((i
& mode
) && (!s
->hit
)
3059 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3060 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3061 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3062 SSL_SESSION_up_ref(s
->session
);
3063 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3064 SSL_SESSION_free(s
->session
);
3067 /* auto flush every 255 connections */
3068 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3069 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3070 ? s
->session_ctx
->stats
.sess_connect_good
3071 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3072 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3077 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3082 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3087 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3091 if (s
->method
!= meth
) {
3092 const SSL_METHOD
*sm
= s
->method
;
3093 int (*hf
) (SSL
*) = s
->handshake_func
;
3095 if (sm
->version
== meth
->version
)
3100 ret
= s
->method
->ssl_new(s
);
3103 if (hf
== sm
->ssl_connect
)
3104 s
->handshake_func
= meth
->ssl_connect
;
3105 else if (hf
== sm
->ssl_accept
)
3106 s
->handshake_func
= meth
->ssl_accept
;
3111 int SSL_get_error(const SSL
*s
, int i
)
3118 return (SSL_ERROR_NONE
);
3121 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3122 * where we do encode the error
3124 if ((l
= ERR_peek_error()) != 0) {
3125 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3126 return (SSL_ERROR_SYSCALL
);
3128 return (SSL_ERROR_SSL
);
3131 if (SSL_want_read(s
)) {
3132 bio
= SSL_get_rbio(s
);
3133 if (BIO_should_read(bio
))
3134 return (SSL_ERROR_WANT_READ
);
3135 else if (BIO_should_write(bio
))
3137 * This one doesn't make too much sense ... We never try to write
3138 * to the rbio, and an application program where rbio and wbio
3139 * are separate couldn't even know what it should wait for.
3140 * However if we ever set s->rwstate incorrectly (so that we have
3141 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3142 * wbio *are* the same, this test works around that bug; so it
3143 * might be safer to keep it.
3145 return (SSL_ERROR_WANT_WRITE
);
3146 else if (BIO_should_io_special(bio
)) {
3147 reason
= BIO_get_retry_reason(bio
);
3148 if (reason
== BIO_RR_CONNECT
)
3149 return (SSL_ERROR_WANT_CONNECT
);
3150 else if (reason
== BIO_RR_ACCEPT
)
3151 return (SSL_ERROR_WANT_ACCEPT
);
3153 return (SSL_ERROR_SYSCALL
); /* unknown */
3157 if (SSL_want_write(s
)) {
3158 /* Access wbio directly - in order to use the buffered bio if present */
3160 if (BIO_should_write(bio
))
3161 return (SSL_ERROR_WANT_WRITE
);
3162 else if (BIO_should_read(bio
))
3164 * See above (SSL_want_read(s) with BIO_should_write(bio))
3166 return (SSL_ERROR_WANT_READ
);
3167 else if (BIO_should_io_special(bio
)) {
3168 reason
= BIO_get_retry_reason(bio
);
3169 if (reason
== BIO_RR_CONNECT
)
3170 return (SSL_ERROR_WANT_CONNECT
);
3171 else if (reason
== BIO_RR_ACCEPT
)
3172 return (SSL_ERROR_WANT_ACCEPT
);
3174 return (SSL_ERROR_SYSCALL
);
3177 if (SSL_want_x509_lookup(s
))
3178 return (SSL_ERROR_WANT_X509_LOOKUP
);
3179 if (SSL_want_async(s
))
3180 return SSL_ERROR_WANT_ASYNC
;
3181 if (SSL_want_async_job(s
))
3182 return SSL_ERROR_WANT_ASYNC_JOB
;
3183 if (SSL_want_early(s
))
3184 return SSL_ERROR_WANT_EARLY
;
3186 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3187 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3188 return (SSL_ERROR_ZERO_RETURN
);
3190 return (SSL_ERROR_SYSCALL
);
3193 static int ssl_do_handshake_intern(void *vargs
)
3195 struct ssl_async_args
*args
;
3198 args
= (struct ssl_async_args
*)vargs
;
3201 return s
->handshake_func(s
);
3204 int SSL_do_handshake(SSL
*s
)
3208 if (s
->handshake_func
== NULL
) {
3209 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3213 ossl_statem_check_finish_init(s
, -1);
3215 s
->method
->ssl_renegotiate_check(s
, 0);
3217 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3218 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3219 struct ssl_async_args args
;
3223 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3225 ret
= s
->handshake_func(s
);
3231 void SSL_set_accept_state(SSL
*s
)
3235 ossl_statem_clear(s
);
3236 s
->handshake_func
= s
->method
->ssl_accept
;
3240 void SSL_set_connect_state(SSL
*s
)
3244 ossl_statem_clear(s
);
3245 s
->handshake_func
= s
->method
->ssl_connect
;
3249 int ssl_undefined_function(SSL
*s
)
3251 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3255 int ssl_undefined_void_function(void)
3257 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3258 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3262 int ssl_undefined_const_function(const SSL
*s
)
3267 const SSL_METHOD
*ssl_bad_method(int ver
)
3269 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3273 const char *ssl_protocol_to_string(int version
)
3277 case TLS1_3_VERSION
:
3280 case TLS1_2_VERSION
:
3283 case TLS1_1_VERSION
:
3298 case DTLS1_2_VERSION
:
3306 const char *SSL_get_version(const SSL
*s
)
3308 return ssl_protocol_to_string(s
->version
);
3311 SSL
*SSL_dup(SSL
*s
)
3313 STACK_OF(X509_NAME
) *sk
;
3318 /* If we're not quiescent, just up_ref! */
3319 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3320 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3325 * Otherwise, copy configuration state, and session if set.
3327 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3330 if (s
->session
!= NULL
) {
3332 * Arranges to share the same session via up_ref. This "copies"
3333 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3335 if (!SSL_copy_session_id(ret
, s
))
3339 * No session has been established yet, so we have to expect that
3340 * s->cert or ret->cert will be changed later -- they should not both
3341 * point to the same object, and thus we can't use
3342 * SSL_copy_session_id.
3344 if (!SSL_set_ssl_method(ret
, s
->method
))
3347 if (s
->cert
!= NULL
) {
3348 ssl_cert_free(ret
->cert
);
3349 ret
->cert
= ssl_cert_dup(s
->cert
);
3350 if (ret
->cert
== NULL
)
3354 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3355 (int)s
->sid_ctx_length
))
3359 if (!ssl_dane_dup(ret
, s
))
3361 ret
->version
= s
->version
;
3362 ret
->options
= s
->options
;
3363 ret
->mode
= s
->mode
;
3364 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3365 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3366 ret
->msg_callback
= s
->msg_callback
;
3367 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3368 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3369 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3370 ret
->generate_session_id
= s
->generate_session_id
;
3372 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3374 /* copy app data, a little dangerous perhaps */
3375 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3378 /* setup rbio, and wbio */
3379 if (s
->rbio
!= NULL
) {
3380 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3383 if (s
->wbio
!= NULL
) {
3384 if (s
->wbio
!= s
->rbio
) {
3385 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3388 BIO_up_ref(ret
->rbio
);
3389 ret
->wbio
= ret
->rbio
;
3393 ret
->server
= s
->server
;
3394 if (s
->handshake_func
) {
3396 SSL_set_accept_state(ret
);
3398 SSL_set_connect_state(ret
);
3400 ret
->shutdown
= s
->shutdown
;
3403 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3404 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3406 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3408 /* dup the cipher_list and cipher_list_by_id stacks */
3409 if (s
->cipher_list
!= NULL
) {
3410 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3413 if (s
->cipher_list_by_id
!= NULL
)
3414 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3418 /* Dup the client_CA list */
3419 if (s
->ca_names
!= NULL
) {
3420 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3423 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3424 xn
= sk_X509_NAME_value(sk
, i
);
3425 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3438 void ssl_clear_cipher_ctx(SSL
*s
)
3440 if (s
->enc_read_ctx
!= NULL
) {
3441 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3442 s
->enc_read_ctx
= NULL
;
3444 if (s
->enc_write_ctx
!= NULL
) {
3445 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3446 s
->enc_write_ctx
= NULL
;
3448 #ifndef OPENSSL_NO_COMP
3449 COMP_CTX_free(s
->expand
);
3451 COMP_CTX_free(s
->compress
);
3456 X509
*SSL_get_certificate(const SSL
*s
)
3458 if (s
->cert
!= NULL
)
3459 return (s
->cert
->key
->x509
);
3464 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3466 if (s
->cert
!= NULL
)
3467 return (s
->cert
->key
->privatekey
);
3472 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3474 if (ctx
->cert
!= NULL
)
3475 return ctx
->cert
->key
->x509
;
3480 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3482 if (ctx
->cert
!= NULL
)
3483 return ctx
->cert
->key
->privatekey
;
3488 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3490 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3491 return (s
->session
->cipher
);
3495 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3497 #ifndef OPENSSL_NO_COMP
3498 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3504 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3506 #ifndef OPENSSL_NO_COMP
3507 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3513 int ssl_init_wbio_buffer(SSL
*s
)
3517 if (s
->bbio
!= NULL
) {
3518 /* Already buffered. */
3522 bbio
= BIO_new(BIO_f_buffer());
3523 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3525 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3529 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3534 int ssl_free_wbio_buffer(SSL
*s
)
3536 /* callers ensure s is never null */
3537 if (s
->bbio
== NULL
)
3540 s
->wbio
= BIO_pop(s
->wbio
);
3541 if (!ossl_assert(s
->wbio
!= NULL
))
3549 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3551 ctx
->quiet_shutdown
= mode
;
3554 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3556 return (ctx
->quiet_shutdown
);
3559 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3561 s
->quiet_shutdown
= mode
;
3564 int SSL_get_quiet_shutdown(const SSL
*s
)
3566 return (s
->quiet_shutdown
);
3569 void SSL_set_shutdown(SSL
*s
, int mode
)
3574 int SSL_get_shutdown(const SSL
*s
)
3579 int SSL_version(const SSL
*s
)
3584 int SSL_client_version(const SSL
*s
)
3586 return s
->client_version
;
3589 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3594 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3597 if (ssl
->ctx
== ctx
)
3600 ctx
= ssl
->session_ctx
;
3601 new_cert
= ssl_cert_dup(ctx
->cert
);
3602 if (new_cert
== NULL
) {
3606 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3607 ssl_cert_free(new_cert
);
3611 ssl_cert_free(ssl
->cert
);
3612 ssl
->cert
= new_cert
;
3615 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3616 * so setter APIs must prevent invalid lengths from entering the system.
3618 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3622 * If the session ID context matches that of the parent SSL_CTX,
3623 * inherit it from the new SSL_CTX as well. If however the context does
3624 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3625 * leave it unchanged.
3627 if ((ssl
->ctx
!= NULL
) &&
3628 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3629 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3630 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3631 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3634 SSL_CTX_up_ref(ctx
);
3635 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3641 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3643 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3646 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3648 X509_LOOKUP
*lookup
;
3650 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3653 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3655 /* Clear any errors if the default directory does not exist */
3661 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3663 X509_LOOKUP
*lookup
;
3665 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3669 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3671 /* Clear any errors if the default file does not exist */
3677 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3680 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3683 void SSL_set_info_callback(SSL
*ssl
,
3684 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3686 ssl
->info_callback
= cb
;
3690 * One compiler (Diab DCC) doesn't like argument names in returned function
3693 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3696 return ssl
->info_callback
;
3699 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3701 ssl
->verify_result
= arg
;
3704 long SSL_get_verify_result(const SSL
*ssl
)
3706 return (ssl
->verify_result
);
3709 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3712 return sizeof(ssl
->s3
->client_random
);
3713 if (outlen
> sizeof(ssl
->s3
->client_random
))
3714 outlen
= sizeof(ssl
->s3
->client_random
);
3715 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3719 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3722 return sizeof(ssl
->s3
->server_random
);
3723 if (outlen
> sizeof(ssl
->s3
->server_random
))
3724 outlen
= sizeof(ssl
->s3
->server_random
);
3725 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3729 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3730 unsigned char *out
, size_t outlen
)
3733 return session
->master_key_length
;
3734 if (outlen
> session
->master_key_length
)
3735 outlen
= session
->master_key_length
;
3736 memcpy(out
, session
->master_key
, outlen
);
3740 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3742 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3745 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3747 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3750 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3752 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3755 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3757 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3760 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3762 return (ctx
->cert_store
);
3765 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3767 X509_STORE_free(ctx
->cert_store
);
3768 ctx
->cert_store
= store
;
3771 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3774 X509_STORE_up_ref(store
);
3775 SSL_CTX_set_cert_store(ctx
, store
);
3778 int SSL_want(const SSL
*s
)
3780 return (s
->rwstate
);
3784 * \brief Set the callback for generating temporary DH keys.
3785 * \param ctx the SSL context.
3786 * \param dh the callback
3789 #ifndef OPENSSL_NO_DH
3790 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3791 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3794 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3797 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3800 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3804 #ifndef OPENSSL_NO_PSK
3805 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3807 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3808 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3811 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3812 if (identity_hint
!= NULL
) {
3813 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3814 if (ctx
->cert
->psk_identity_hint
== NULL
)
3817 ctx
->cert
->psk_identity_hint
= NULL
;
3821 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3826 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3827 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3830 OPENSSL_free(s
->cert
->psk_identity_hint
);
3831 if (identity_hint
!= NULL
) {
3832 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3833 if (s
->cert
->psk_identity_hint
== NULL
)
3836 s
->cert
->psk_identity_hint
= NULL
;
3840 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3842 if (s
== NULL
|| s
->session
== NULL
)
3844 return (s
->session
->psk_identity_hint
);
3847 const char *SSL_get_psk_identity(const SSL
*s
)
3849 if (s
== NULL
|| s
->session
== NULL
)
3851 return (s
->session
->psk_identity
);
3854 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3856 s
->psk_client_callback
= cb
;
3859 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3861 ctx
->psk_client_callback
= cb
;
3864 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3866 s
->psk_server_callback
= cb
;
3869 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3871 ctx
->psk_server_callback
= cb
;
3875 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3876 void (*cb
) (int write_p
, int version
,
3877 int content_type
, const void *buf
,
3878 size_t len
, SSL
*ssl
, void *arg
))
3880 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3883 void SSL_set_msg_callback(SSL
*ssl
,
3884 void (*cb
) (int write_p
, int version
,
3885 int content_type
, const void *buf
,
3886 size_t len
, SSL
*ssl
, void *arg
))
3888 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3891 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3892 int (*cb
) (SSL
*ssl
,
3896 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3897 (void (*)(void))cb
);
3900 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3901 int (*cb
) (SSL
*ssl
,
3902 int is_forward_secure
))
3904 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3905 (void (*)(void))cb
);
3908 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3909 size_t (*cb
) (SSL
*ssl
, int type
,
3910 size_t len
, void *arg
))
3912 ctx
->record_padding_cb
= cb
;
3915 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3917 ctx
->record_padding_arg
= arg
;
3920 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3922 return ctx
->record_padding_arg
;
3925 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3927 /* block size of 0 or 1 is basically no padding */
3928 if (block_size
== 1)
3929 ctx
->block_padding
= 0;
3930 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3931 ctx
->block_padding
= block_size
;
3937 void SSL_set_record_padding_callback(SSL
*ssl
,
3938 size_t (*cb
) (SSL
*ssl
, int type
,
3939 size_t len
, void *arg
))
3941 ssl
->record_padding_cb
= cb
;
3944 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3946 ssl
->record_padding_arg
= arg
;
3949 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3951 return ssl
->record_padding_arg
;
3954 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3956 /* block size of 0 or 1 is basically no padding */
3957 if (block_size
== 1)
3958 ssl
->block_padding
= 0;
3959 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3960 ssl
->block_padding
= block_size
;
3967 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3968 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3969 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3970 * Returns the newly allocated ctx;
3973 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3975 ssl_clear_hash_ctx(hash
);
3976 *hash
= EVP_MD_CTX_new();
3977 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3978 EVP_MD_CTX_free(*hash
);
3985 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3988 EVP_MD_CTX_free(*hash
);
3992 /* Retrieve handshake hashes */
3993 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3996 EVP_MD_CTX
*ctx
= NULL
;
3997 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3998 int hashleni
= EVP_MD_CTX_size(hdgst
);
4001 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4004 ctx
= EVP_MD_CTX_new();
4008 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4009 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4012 *hashlen
= hashleni
;
4016 EVP_MD_CTX_free(ctx
);
4020 int SSL_session_reused(SSL
*s
)
4025 int SSL_is_server(const SSL
*s
)
4030 #if OPENSSL_API_COMPAT < 0x10100000L
4031 void SSL_set_debug(SSL
*s
, int debug
)
4033 /* Old function was do-nothing anyway... */
4039 void SSL_set_security_level(SSL
*s
, int level
)
4041 s
->cert
->sec_level
= level
;
4044 int SSL_get_security_level(const SSL
*s
)
4046 return s
->cert
->sec_level
;
4049 void SSL_set_security_callback(SSL
*s
,
4050 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4051 int op
, int bits
, int nid
,
4052 void *other
, void *ex
))
4054 s
->cert
->sec_cb
= cb
;
4057 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4058 const SSL_CTX
*ctx
, int op
,
4059 int bits
, int nid
, void *other
,
4061 return s
->cert
->sec_cb
;
4064 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4066 s
->cert
->sec_ex
= ex
;
4069 void *SSL_get0_security_ex_data(const SSL
*s
)
4071 return s
->cert
->sec_ex
;
4074 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4076 ctx
->cert
->sec_level
= level
;
4079 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4081 return ctx
->cert
->sec_level
;
4084 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4085 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4086 int op
, int bits
, int nid
,
4087 void *other
, void *ex
))
4089 ctx
->cert
->sec_cb
= cb
;
4092 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4098 return ctx
->cert
->sec_cb
;
4101 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4103 ctx
->cert
->sec_ex
= ex
;
4106 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4108 return ctx
->cert
->sec_ex
;
4112 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4113 * can return unsigned long, instead of the generic long return value from the
4114 * control interface.
4116 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4118 return ctx
->options
;
4121 unsigned long SSL_get_options(const SSL
*s
)
4126 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4128 return ctx
->options
|= op
;
4131 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4133 return s
->options
|= op
;
4136 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4138 return ctx
->options
&= ~op
;
4141 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4143 return s
->options
&= ~op
;
4146 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4148 return s
->verified_chain
;
4151 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4153 #ifndef OPENSSL_NO_CT
4156 * Moves SCTs from the |src| stack to the |dst| stack.
4157 * The source of each SCT will be set to |origin|.
4158 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4160 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4162 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4163 sct_source_t origin
)
4169 *dst
= sk_SCT_new_null();
4171 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4176 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4177 if (SCT_set_source(sct
, origin
) != 1)
4180 if (sk_SCT_push(*dst
, sct
) <= 0)
4188 sk_SCT_push(src
, sct
); /* Put the SCT back */
4193 * Look for data collected during ServerHello and parse if found.
4194 * Returns the number of SCTs extracted.
4196 static int ct_extract_tls_extension_scts(SSL
*s
)
4198 int scts_extracted
= 0;
4200 if (s
->ext
.scts
!= NULL
) {
4201 const unsigned char *p
= s
->ext
.scts
;
4202 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4204 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4206 SCT_LIST_free(scts
);
4209 return scts_extracted
;
4213 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4214 * contains an SCT X509 extension. They will be stored in |s->scts|.
4216 * - The number of SCTs extracted, assuming an OCSP response exists.
4217 * - 0 if no OCSP response exists or it contains no SCTs.
4218 * - A negative integer if an error occurs.
4220 static int ct_extract_ocsp_response_scts(SSL
*s
)
4222 # ifndef OPENSSL_NO_OCSP
4223 int scts_extracted
= 0;
4224 const unsigned char *p
;
4225 OCSP_BASICRESP
*br
= NULL
;
4226 OCSP_RESPONSE
*rsp
= NULL
;
4227 STACK_OF(SCT
) *scts
= NULL
;
4230 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4233 p
= s
->ext
.ocsp
.resp
;
4234 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4238 br
= OCSP_response_get1_basic(rsp
);
4242 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4243 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4249 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4251 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4252 if (scts_extracted
< 0)
4256 SCT_LIST_free(scts
);
4257 OCSP_BASICRESP_free(br
);
4258 OCSP_RESPONSE_free(rsp
);
4259 return scts_extracted
;
4261 /* Behave as if no OCSP response exists */
4267 * Attempts to extract SCTs from the peer certificate.
4268 * Return the number of SCTs extracted, or a negative integer if an error
4271 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4273 int scts_extracted
= 0;
4274 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4277 STACK_OF(SCT
) *scts
=
4278 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4281 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4283 SCT_LIST_free(scts
);
4286 return scts_extracted
;
4290 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4291 * response (if it exists) and X509v3 extensions in the certificate.
4292 * Returns NULL if an error occurs.
4294 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4296 if (!s
->scts_parsed
) {
4297 if (ct_extract_tls_extension_scts(s
) < 0 ||
4298 ct_extract_ocsp_response_scts(s
) < 0 ||
4299 ct_extract_x509v3_extension_scts(s
) < 0)
4309 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4310 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4315 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4316 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4318 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4321 for (i
= 0; i
< count
; ++i
) {
4322 SCT
*sct
= sk_SCT_value(scts
, i
);
4323 int status
= SCT_get_validation_status(sct
);
4325 if (status
== SCT_VALIDATION_STATUS_VALID
)
4328 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4332 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4336 * Since code exists that uses the custom extension handler for CT, look
4337 * for this and throw an error if they have already registered to use CT.
4339 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4340 TLSEXT_TYPE_signed_certificate_timestamp
))
4342 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4343 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4347 if (callback
!= NULL
) {
4349 * If we are validating CT, then we MUST accept SCTs served via OCSP
4351 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4355 s
->ct_validation_callback
= callback
;
4356 s
->ct_validation_callback_arg
= arg
;
4361 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4362 ssl_ct_validation_cb callback
, void *arg
)
4365 * Since code exists that uses the custom extension handler for CT, look for
4366 * this and throw an error if they have already registered to use CT.
4368 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4369 TLSEXT_TYPE_signed_certificate_timestamp
))
4371 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4372 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4376 ctx
->ct_validation_callback
= callback
;
4377 ctx
->ct_validation_callback_arg
= arg
;
4381 int SSL_ct_is_enabled(const SSL
*s
)
4383 return s
->ct_validation_callback
!= NULL
;
4386 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4388 return ctx
->ct_validation_callback
!= NULL
;
4391 int ssl_validate_ct(SSL
*s
)
4394 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4396 SSL_DANE
*dane
= &s
->dane
;
4397 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4398 const STACK_OF(SCT
) *scts
;
4401 * If no callback is set, the peer is anonymous, or its chain is invalid,
4402 * skip SCT validation - just return success. Applications that continue
4403 * handshakes without certificates, with unverified chains, or pinned leaf
4404 * certificates are outside the scope of the WebPKI and CT.
4406 * The above exclusions notwithstanding the vast majority of peers will
4407 * have rather ordinary certificate chains validated by typical
4408 * applications that perform certificate verification and therefore will
4409 * process SCTs when enabled.
4411 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4412 s
->verify_result
!= X509_V_OK
||
4413 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4417 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4418 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4420 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4421 switch (dane
->mtlsa
->usage
) {
4422 case DANETLS_USAGE_DANE_TA
:
4423 case DANETLS_USAGE_DANE_EE
:
4428 ctx
= CT_POLICY_EVAL_CTX_new();
4430 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4434 issuer
= sk_X509_value(s
->verified_chain
, 1);
4435 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4436 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4437 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4438 CT_POLICY_EVAL_CTX_set_time(
4439 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4441 scts
= SSL_get0_peer_scts(s
);
4444 * This function returns success (> 0) only when all the SCTs are valid, 0
4445 * when some are invalid, and < 0 on various internal errors (out of
4446 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4447 * reason to abort the handshake, that decision is up to the callback.
4448 * Therefore, we error out only in the unexpected case that the return
4449 * value is negative.
4451 * XXX: One might well argue that the return value of this function is an
4452 * unfortunate design choice. Its job is only to determine the validation
4453 * status of each of the provided SCTs. So long as it correctly separates
4454 * the wheat from the chaff it should return success. Failure in this case
4455 * ought to correspond to an inability to carry out its duties.
4457 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4458 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4462 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4464 ret
= 0; /* This function returns 0 on failure */
4467 CT_POLICY_EVAL_CTX_free(ctx
);
4469 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4470 * failure return code here. Also the application may wish the complete
4471 * the handshake, and then disconnect cleanly at a higher layer, after
4472 * checking the verification status of the completed connection.
4474 * We therefore force a certificate verification failure which will be
4475 * visible via SSL_get_verify_result() and cached as part of any resumed
4478 * Note: the permissive callback is for information gathering only, always
4479 * returns success, and does not affect verification status. Only the
4480 * strict callback or a custom application-specified callback can trigger
4481 * connection failure or record a verification error.
4484 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4488 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4490 switch (validation_mode
) {
4492 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4494 case SSL_CT_VALIDATION_PERMISSIVE
:
4495 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4496 case SSL_CT_VALIDATION_STRICT
:
4497 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4501 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4503 switch (validation_mode
) {
4505 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4507 case SSL_CT_VALIDATION_PERMISSIVE
:
4508 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4509 case SSL_CT_VALIDATION_STRICT
:
4510 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4514 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4516 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4519 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4521 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4524 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4526 CTLOG_STORE_free(ctx
->ctlog_store
);
4527 ctx
->ctlog_store
= logs
;
4530 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4532 return ctx
->ctlog_store
;
4535 #endif /* OPENSSL_NO_CT */
4537 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4540 c
->early_cb_arg
= arg
;
4543 int SSL_early_isv2(SSL
*s
)
4545 if (s
->clienthello
== NULL
)
4547 return s
->clienthello
->isv2
;
4550 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4552 if (s
->clienthello
== NULL
)
4554 return s
->clienthello
->legacy_version
;
4557 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4559 if (s
->clienthello
== NULL
)
4562 *out
= s
->clienthello
->random
;
4563 return SSL3_RANDOM_SIZE
;
4566 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4568 if (s
->clienthello
== NULL
)
4571 *out
= s
->clienthello
->session_id
;
4572 return s
->clienthello
->session_id_len
;
4575 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4577 if (s
->clienthello
== NULL
)
4580 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4581 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4584 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4586 if (s
->clienthello
== NULL
)
4589 *out
= s
->clienthello
->compressions
;
4590 return s
->clienthello
->compressions_len
;
4593 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4599 if (s
->clienthello
== NULL
)
4601 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4602 r
= s
->clienthello
->pre_proc_exts
+ i
;
4603 if (r
->present
&& r
->type
== type
) {
4605 *out
= PACKET_data(&r
->data
);
4607 *outlen
= PACKET_remaining(&r
->data
);
4614 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4616 ctx
->keylog_callback
= cb
;
4619 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4621 return ctx
->keylog_callback
;
4624 static int nss_keylog_int(const char *prefix
,
4626 const uint8_t *parameter_1
,
4627 size_t parameter_1_len
,
4628 const uint8_t *parameter_2
,
4629 size_t parameter_2_len
)
4632 char *cursor
= NULL
;
4637 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4640 * Our output buffer will contain the following strings, rendered with
4641 * space characters in between, terminated by a NULL character: first the
4642 * prefix, then the first parameter, then the second parameter. The
4643 * meaning of each parameter depends on the specific key material being
4644 * logged. Note that the first and second parameters are encoded in
4645 * hexadecimal, so we need a buffer that is twice their lengths.
4647 prefix_len
= strlen(prefix
);
4648 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4649 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4650 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4654 strcpy(cursor
, prefix
);
4655 cursor
+= prefix_len
;
4658 for (i
= 0; i
< parameter_1_len
; i
++) {
4659 sprintf(cursor
, "%02x", parameter_1
[i
]);
4664 for (i
= 0; i
< parameter_2_len
; i
++) {
4665 sprintf(cursor
, "%02x", parameter_2
[i
]);
4670 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4676 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4677 const uint8_t *encrypted_premaster
,
4678 size_t encrypted_premaster_len
,
4679 const uint8_t *premaster
,
4680 size_t premaster_len
)
4682 if (encrypted_premaster_len
< 8) {
4683 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4687 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4688 return nss_keylog_int("RSA",
4690 encrypted_premaster
,
4696 int ssl_log_secret(SSL
*ssl
,
4698 const uint8_t *secret
,
4701 return nss_keylog_int(label
,
4703 ssl
->s3
->client_random
,
4709 #define SSLV2_CIPHER_LEN 3
4711 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4716 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4718 if (PACKET_remaining(cipher_suites
) == 0) {
4719 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4720 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4724 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4725 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4726 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4727 *al
= SSL_AD_DECODE_ERROR
;
4731 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4732 s
->s3
->tmp
.ciphers_raw
= NULL
;
4733 s
->s3
->tmp
.ciphers_rawlen
= 0;
4736 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4737 PACKET sslv2ciphers
= *cipher_suites
;
4738 unsigned int leadbyte
;
4742 * We store the raw ciphers list in SSLv3+ format so we need to do some
4743 * preprocessing to convert the list first. If there are any SSLv2 only
4744 * ciphersuites with a non-zero leading byte then we are going to
4745 * slightly over allocate because we won't store those. But that isn't a
4748 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4749 s
->s3
->tmp
.ciphers_raw
= raw
;
4751 *al
= SSL_AD_INTERNAL_ERROR
;
4754 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4755 PACKET_remaining(&sslv2ciphers
) > 0;
4756 raw
+= TLS_CIPHER_LEN
) {
4757 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4759 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4762 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4763 *al
= SSL_AD_DECODE_ERROR
;
4764 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4765 s
->s3
->tmp
.ciphers_raw
= NULL
;
4766 s
->s3
->tmp
.ciphers_rawlen
= 0;
4770 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4772 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4773 &s
->s3
->tmp
.ciphers_rawlen
)) {
4774 *al
= SSL_AD_INTERNAL_ERROR
;
4782 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4783 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4784 STACK_OF(SSL_CIPHER
) **scsvs
)
4789 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4791 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4794 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4795 STACK_OF(SSL_CIPHER
) **skp
,
4796 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4797 int sslv2format
, int *al
)
4799 const SSL_CIPHER
*c
;
4800 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4801 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4803 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4804 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4806 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4808 if (PACKET_remaining(cipher_suites
) == 0) {
4809 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4810 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4814 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4815 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4816 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4817 *al
= SSL_AD_DECODE_ERROR
;
4821 sk
= sk_SSL_CIPHER_new_null();
4822 scsvs
= sk_SSL_CIPHER_new_null();
4823 if (sk
== NULL
|| scsvs
== NULL
) {
4824 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4825 *al
= SSL_AD_INTERNAL_ERROR
;
4829 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4831 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4832 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4833 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4835 if (sslv2format
&& cipher
[0] != '\0')
4838 /* For SSLv2-compat, ignore leading 0-byte. */
4839 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4841 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4842 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4843 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4844 *al
= SSL_AD_INTERNAL_ERROR
;
4849 if (PACKET_remaining(cipher_suites
) > 0) {
4850 *al
= SSL_AD_DECODE_ERROR
;
4851 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
4858 sk_SSL_CIPHER_free(sk
);
4859 if (scsvs_out
!= NULL
)
4862 sk_SSL_CIPHER_free(scsvs
);
4865 sk_SSL_CIPHER_free(sk
);
4866 sk_SSL_CIPHER_free(scsvs
);
4870 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4872 ctx
->max_early_data
= max_early_data
;
4877 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4879 return ctx
->max_early_data
;
4882 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4884 s
->max_early_data
= max_early_data
;
4889 uint32_t SSL_get_max_early_data(const SSL
*s
)
4891 return s
->max_early_data
;