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
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
57 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
63 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
64 ssl_undefined_function
,
65 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
66 ssl_undefined_function
,
67 (int (*)(SSL
*, int))ssl_undefined_function
,
68 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
69 ssl_undefined_function
,
70 NULL
, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL
, /* server_finished_label */
73 0, /* server_finished_label_len */
74 (int (*)(int))ssl_undefined_function
,
75 (int (*)(SSL
*, unsigned char *, size_t, const char *,
76 size_t, const unsigned char *, size_t,
77 int use_context
))ssl_undefined_function
,
80 struct ssl_async_args
{
84 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
86 int (*func_read
) (SSL
*, void *, size_t, size_t *);
87 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
88 int (*func_other
) (SSL
*);
98 DANETLS_MATCHING_FULL
, 0, NID_undef
101 DANETLS_MATCHING_2256
, 1, NID_sha256
104 DANETLS_MATCHING_2512
, 2, NID_sha512
108 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
110 const EVP_MD
**mdevp
;
112 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
113 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
116 if (dctx
->mdevp
!= NULL
)
119 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
120 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
122 if (mdord
== NULL
|| mdevp
== NULL
) {
125 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
129 /* Install default entries */
130 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
133 if (dane_mds
[i
].nid
== NID_undef
||
134 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
136 mdevp
[dane_mds
[i
].mtype
] = md
;
137 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
147 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
149 OPENSSL_free(dctx
->mdevp
);
152 OPENSSL_free(dctx
->mdord
);
157 static void tlsa_free(danetls_record
*t
)
161 OPENSSL_free(t
->data
);
162 EVP_PKEY_free(t
->spki
);
166 static void dane_final(SSL_DANE
*dane
)
168 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
171 sk_X509_pop_free(dane
->certs
, X509_free
);
174 X509_free(dane
->mcert
);
182 * dane_copy - Copy dane configuration, sans verification state.
184 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
189 if (!DANETLS_ENABLED(&from
->dane
))
192 dane_final(&to
->dane
);
193 to
->dane
.flags
= from
->dane
.flags
;
194 to
->dane
.dctx
= &to
->ctx
->dane
;
195 to
->dane
.trecs
= sk_danetls_record_new_null();
197 if (to
->dane
.trecs
== NULL
) {
198 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
202 num
= sk_danetls_record_num(from
->dane
.trecs
);
203 for (i
= 0; i
< num
; ++i
) {
204 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
206 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
207 t
->data
, t
->dlen
) <= 0)
213 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
214 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
218 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
219 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
223 if (mtype
> dctx
->mdmax
) {
224 const EVP_MD
**mdevp
;
226 int n
= ((int)mtype
) + 1;
228 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
230 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
235 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
237 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
242 /* Zero-fill any gaps */
243 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
251 dctx
->mdevp
[mtype
] = md
;
252 /* Coerce ordinal of disabled matching types to 0 */
253 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
258 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
260 if (mtype
> dane
->dctx
->mdmax
)
262 return dane
->dctx
->mdevp
[mtype
];
265 static int dane_tlsa_add(SSL_DANE
*dane
,
268 uint8_t mtype
, unsigned char *data
, size_t dlen
)
271 const EVP_MD
*md
= NULL
;
272 int ilen
= (int)dlen
;
276 if (dane
->trecs
== NULL
) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
281 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
282 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
286 if (usage
> DANETLS_USAGE_LAST
) {
287 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
291 if (selector
> DANETLS_SELECTOR_LAST
) {
292 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
296 if (mtype
!= DANETLS_MATCHING_FULL
) {
297 md
= tlsa_md_get(dane
, mtype
);
299 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
304 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
305 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
309 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
313 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
314 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
319 t
->selector
= selector
;
321 t
->data
= OPENSSL_malloc(dlen
);
322 if (t
->data
== NULL
) {
324 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
327 memcpy(t
->data
, data
, dlen
);
330 /* Validate and cache full certificate or public key */
331 if (mtype
== DANETLS_MATCHING_FULL
) {
332 const unsigned char *p
= data
;
334 EVP_PKEY
*pkey
= NULL
;
337 case DANETLS_SELECTOR_CERT
:
338 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
339 dlen
!= (size_t)(p
- data
)) {
341 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
344 if (X509_get0_pubkey(cert
) == NULL
) {
346 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
350 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
356 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
357 * records that contain full certificates of trust-anchors that are
358 * not present in the wire chain. For usage PKIX-TA(0), we augment
359 * the chain with untrusted Full(0) certificates from DNS, in case
360 * they are missing from the chain.
362 if ((dane
->certs
== NULL
&&
363 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
364 !sk_X509_push(dane
->certs
, cert
)) {
365 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
372 case DANETLS_SELECTOR_SPKI
:
373 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
374 dlen
!= (size_t)(p
- data
)) {
376 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
381 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
382 * records that contain full bare keys of trust-anchors that are
383 * not present in the wire chain.
385 if (usage
== DANETLS_USAGE_DANE_TA
)
394 * Find the right insertion point for the new record.
396 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
397 * they can be processed first, as they require no chain building, and no
398 * expiration or hostname checks. Because DANE-EE(3) is numerically
399 * largest, this is accomplished via descending sort by "usage".
401 * We also sort in descending order by matching ordinal to simplify
402 * the implementation of digest agility in the verification code.
404 * The choice of order for the selector is not significant, so we
405 * use the same descending order for consistency.
407 num
= sk_danetls_record_num(dane
->trecs
);
408 for (i
= 0; i
< num
; ++i
) {
409 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
411 if (rec
->usage
> usage
)
413 if (rec
->usage
< usage
)
415 if (rec
->selector
> selector
)
417 if (rec
->selector
< selector
)
419 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
424 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
426 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
429 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
434 static void clear_ciphers(SSL
*s
)
436 /* clear the current cipher */
437 ssl_clear_cipher_ctx(s
);
438 ssl_clear_hash_ctx(&s
->read_hash
);
439 ssl_clear_hash_ctx(&s
->write_hash
);
442 int SSL_clear(SSL
*s
)
444 if (s
->method
== NULL
) {
445 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
449 if (ssl_clear_bad_session(s
)) {
450 SSL_SESSION_free(s
->session
);
458 if (s
->renegotiate
) {
459 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
463 ossl_statem_clear(s
);
465 s
->version
= s
->method
->version
;
466 s
->client_version
= s
->version
;
467 s
->rwstate
= SSL_NOTHING
;
469 BUF_MEM_free(s
->init_buf
);
474 s
->key_update
= SSL_KEY_UPDATE_NONE
;
476 /* Reset DANE verification result state */
479 X509_free(s
->dane
.mcert
);
480 s
->dane
.mcert
= NULL
;
481 s
->dane
.mtlsa
= NULL
;
483 /* Clear the verification result peername */
484 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
487 * Check to see if we were changed into a different method, if so, revert
488 * back if we are not doing session-id reuse.
490 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
491 && (s
->method
!= s
->ctx
->method
)) {
492 s
->method
->ssl_free(s
);
493 s
->method
= s
->ctx
->method
;
494 if (!s
->method
->ssl_new(s
))
497 s
->method
->ssl_clear(s
);
499 RECORD_LAYER_clear(&s
->rlayer
);
504 /** Used to change an SSL_CTXs default SSL method type */
505 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
507 STACK_OF(SSL_CIPHER
) *sk
;
511 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
512 &(ctx
->cipher_list_by_id
),
513 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
514 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
515 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
521 SSL
*SSL_new(SSL_CTX
*ctx
)
526 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
529 if (ctx
->method
== NULL
) {
530 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
534 s
= OPENSSL_zalloc(sizeof(*s
));
538 s
->lock
= CRYPTO_THREAD_lock_new();
539 if (s
->lock
== NULL
) {
540 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
545 RECORD_LAYER_init(&s
->rlayer
, s
);
547 s
->options
= ctx
->options
;
548 s
->dane
.flags
= ctx
->dane
.flags
;
549 s
->min_proto_version
= ctx
->min_proto_version
;
550 s
->max_proto_version
= ctx
->max_proto_version
;
552 s
->max_cert_list
= ctx
->max_cert_list
;
554 s
->max_early_data
= ctx
->max_early_data
;
557 * Earlier library versions used to copy the pointer to the CERT, not
558 * its contents; only when setting new parameters for the per-SSL
559 * copy, ssl_cert_new would be called (and the direct reference to
560 * the per-SSL_CTX settings would be lost, but those still were
561 * indirectly accessed for various purposes, and for that reason they
562 * used to be known as s->ctx->default_cert). Now we don't look at the
563 * SSL_CTX's CERT after having duplicated it once.
565 s
->cert
= ssl_cert_dup(ctx
->cert
);
569 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
570 s
->msg_callback
= ctx
->msg_callback
;
571 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
572 s
->verify_mode
= ctx
->verify_mode
;
573 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
574 s
->record_padding_cb
= ctx
->record_padding_cb
;
575 s
->record_padding_arg
= ctx
->record_padding_arg
;
576 s
->block_padding
= ctx
->block_padding
;
577 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
578 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
580 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
581 s
->verify_callback
= ctx
->default_verify_callback
;
582 s
->generate_session_id
= ctx
->generate_session_id
;
584 s
->param
= X509_VERIFY_PARAM_new();
585 if (s
->param
== NULL
)
587 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
588 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
589 s
->max_send_fragment
= ctx
->max_send_fragment
;
590 s
->split_send_fragment
= ctx
->split_send_fragment
;
591 s
->max_pipelines
= ctx
->max_pipelines
;
592 if (s
->max_pipelines
> 1)
593 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
594 if (ctx
->default_read_buf_len
> 0)
595 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
600 s
->ext
.debug_arg
= NULL
;
601 s
->ext
.ticket_expected
= 0;
602 s
->ext
.status_type
= ctx
->ext
.status_type
;
603 s
->ext
.status_expected
= 0;
604 s
->ext
.ocsp
.ids
= NULL
;
605 s
->ext
.ocsp
.exts
= NULL
;
606 s
->ext
.ocsp
.resp
= NULL
;
607 s
->ext
.ocsp
.resp_len
= 0;
609 s
->session_ctx
= ctx
;
610 #ifndef OPENSSL_NO_EC
611 if (ctx
->ext
.ecpointformats
) {
612 s
->ext
.ecpointformats
=
613 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
614 ctx
->ext
.ecpointformats_len
);
615 if (!s
->ext
.ecpointformats
)
617 s
->ext
.ecpointformats_len
=
618 ctx
->ext
.ecpointformats_len
;
620 if (ctx
->ext
.supportedgroups
) {
621 s
->ext
.supportedgroups
=
622 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
623 ctx
->ext
.supportedgroups_len
);
624 if (!s
->ext
.supportedgroups
)
626 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
629 #ifndef OPENSSL_NO_NEXTPROTONEG
633 if (s
->ctx
->ext
.alpn
) {
634 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
635 if (s
->ext
.alpn
== NULL
)
637 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
638 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
641 s
->verified_chain
= NULL
;
642 s
->verify_result
= X509_V_OK
;
644 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
645 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
647 s
->method
= ctx
->method
;
649 s
->key_update
= SSL_KEY_UPDATE_NONE
;
651 if (!s
->method
->ssl_new(s
))
654 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
659 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
662 #ifndef OPENSSL_NO_PSK
663 s
->psk_client_callback
= ctx
->psk_client_callback
;
664 s
->psk_server_callback
= ctx
->psk_server_callback
;
669 #ifndef OPENSSL_NO_CT
670 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
671 ctx
->ct_validation_callback_arg
))
678 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
682 int SSL_is_dtls(const SSL
*s
)
684 return SSL_IS_DTLS(s
) ? 1 : 0;
687 int SSL_up_ref(SSL
*s
)
691 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
694 REF_PRINT_COUNT("SSL", s
);
695 REF_ASSERT_ISNT(i
< 2);
696 return ((i
> 1) ? 1 : 0);
699 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
700 unsigned int sid_ctx_len
)
702 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
703 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
704 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
707 ctx
->sid_ctx_length
= sid_ctx_len
;
708 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
713 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
714 unsigned int sid_ctx_len
)
716 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
717 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
718 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
721 ssl
->sid_ctx_length
= sid_ctx_len
;
722 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
727 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
729 CRYPTO_THREAD_write_lock(ctx
->lock
);
730 ctx
->generate_session_id
= cb
;
731 CRYPTO_THREAD_unlock(ctx
->lock
);
735 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
737 CRYPTO_THREAD_write_lock(ssl
->lock
);
738 ssl
->generate_session_id
= cb
;
739 CRYPTO_THREAD_unlock(ssl
->lock
);
743 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
747 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
748 * we can "construct" a session to give us the desired check - i.e. to
749 * find if there's a session in the hash table that would conflict with
750 * any new session built out of this id/id_len and the ssl_version in use
755 if (id_len
> sizeof r
.session_id
)
758 r
.ssl_version
= ssl
->version
;
759 r
.session_id_length
= id_len
;
760 memcpy(r
.session_id
, id
, id_len
);
762 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
763 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
764 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
768 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
770 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
773 int SSL_set_purpose(SSL
*s
, int purpose
)
775 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
778 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
780 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
783 int SSL_set_trust(SSL
*s
, int trust
)
785 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
788 int SSL_set1_host(SSL
*s
, const char *hostname
)
790 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
793 int SSL_add1_host(SSL
*s
, const char *hostname
)
795 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
798 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
800 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
803 const char *SSL_get0_peername(SSL
*s
)
805 return X509_VERIFY_PARAM_get0_peername(s
->param
);
808 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
810 return dane_ctx_enable(&ctx
->dane
);
813 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
815 unsigned long orig
= ctx
->dane
.flags
;
817 ctx
->dane
.flags
|= flags
;
821 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
823 unsigned long orig
= ctx
->dane
.flags
;
825 ctx
->dane
.flags
&= ~flags
;
829 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
831 SSL_DANE
*dane
= &s
->dane
;
833 if (s
->ctx
->dane
.mdmax
== 0) {
834 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
837 if (dane
->trecs
!= NULL
) {
838 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
843 * Default SNI name. This rejects empty names, while set1_host below
844 * accepts them and disables host name checks. To avoid side-effects with
845 * invalid input, set the SNI name first.
847 if (s
->ext
.hostname
== NULL
) {
848 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
849 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
854 /* Primary RFC6125 reference identifier */
855 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
856 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
862 dane
->dctx
= &s
->ctx
->dane
;
863 dane
->trecs
= sk_danetls_record_new_null();
865 if (dane
->trecs
== NULL
) {
866 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
872 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
874 unsigned long orig
= ssl
->dane
.flags
;
876 ssl
->dane
.flags
|= flags
;
880 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
882 unsigned long orig
= ssl
->dane
.flags
;
884 ssl
->dane
.flags
&= ~flags
;
888 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
890 SSL_DANE
*dane
= &s
->dane
;
892 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
896 *mcert
= dane
->mcert
;
898 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
903 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
904 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
906 SSL_DANE
*dane
= &s
->dane
;
908 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
912 *usage
= dane
->mtlsa
->usage
;
914 *selector
= dane
->mtlsa
->selector
;
916 *mtype
= dane
->mtlsa
->mtype
;
918 *data
= dane
->mtlsa
->data
;
920 *dlen
= dane
->mtlsa
->dlen
;
925 SSL_DANE
*SSL_get0_dane(SSL
*s
)
930 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
931 uint8_t mtype
, unsigned char *data
, size_t dlen
)
933 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
936 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
939 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
942 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
944 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
947 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
949 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
952 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
957 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
962 void SSL_certs_clear(SSL
*s
)
964 ssl_cert_clear_certs(s
->cert
);
967 void SSL_free(SSL
*s
)
974 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
975 REF_PRINT_COUNT("SSL", s
);
978 REF_ASSERT_ISNT(i
< 0);
980 X509_VERIFY_PARAM_free(s
->param
);
981 dane_final(&s
->dane
);
982 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
984 ssl_free_wbio_buffer(s
);
986 BIO_free_all(s
->wbio
);
987 BIO_free_all(s
->rbio
);
989 BUF_MEM_free(s
->init_buf
);
991 /* add extra stuff */
992 sk_SSL_CIPHER_free(s
->cipher_list
);
993 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
995 /* Make the next call work :-) */
996 if (s
->session
!= NULL
) {
997 ssl_clear_bad_session(s
);
998 SSL_SESSION_free(s
->session
);
1003 ssl_cert_free(s
->cert
);
1004 /* Free up if allocated */
1006 OPENSSL_free(s
->ext
.hostname
);
1007 SSL_CTX_free(s
->session_ctx
);
1008 #ifndef OPENSSL_NO_EC
1009 OPENSSL_free(s
->ext
.ecpointformats
);
1010 OPENSSL_free(s
->ext
.supportedgroups
);
1011 #endif /* OPENSSL_NO_EC */
1012 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1013 #ifndef OPENSSL_NO_OCSP
1014 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1016 #ifndef OPENSSL_NO_CT
1017 SCT_LIST_free(s
->scts
);
1018 OPENSSL_free(s
->ext
.scts
);
1020 OPENSSL_free(s
->ext
.ocsp
.resp
);
1021 OPENSSL_free(s
->ext
.alpn
);
1022 OPENSSL_free(s
->ext
.tls13_cookie
);
1023 OPENSSL_free(s
->clienthello
);
1025 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1027 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1029 if (s
->method
!= NULL
)
1030 s
->method
->ssl_free(s
);
1032 RECORD_LAYER_release(&s
->rlayer
);
1034 SSL_CTX_free(s
->ctx
);
1036 ASYNC_WAIT_CTX_free(s
->waitctx
);
1038 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1039 OPENSSL_free(s
->ext
.npn
);
1042 #ifndef OPENSSL_NO_SRTP
1043 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1046 CRYPTO_THREAD_lock_free(s
->lock
);
1051 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1053 BIO_free_all(s
->rbio
);
1057 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1060 * If the output buffering BIO is still in place, remove it
1062 if (s
->bbio
!= NULL
)
1063 s
->wbio
= BIO_pop(s
->wbio
);
1065 BIO_free_all(s
->wbio
);
1068 /* Re-attach |bbio| to the new |wbio|. */
1069 if (s
->bbio
!= NULL
)
1070 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1073 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1076 * For historical reasons, this function has many different cases in
1077 * ownership handling.
1080 /* If nothing has changed, do nothing */
1081 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1085 * If the two arguments are equal then one fewer reference is granted by the
1086 * caller than we want to take
1088 if (rbio
!= NULL
&& rbio
== wbio
)
1092 * If only the wbio is changed only adopt one reference.
1094 if (rbio
== SSL_get_rbio(s
)) {
1095 SSL_set0_wbio(s
, wbio
);
1099 * There is an asymmetry here for historical reasons. If only the rbio is
1100 * changed AND the rbio and wbio were originally different, then we only
1101 * adopt one reference.
1103 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1104 SSL_set0_rbio(s
, rbio
);
1108 /* Otherwise, adopt both references. */
1109 SSL_set0_rbio(s
, rbio
);
1110 SSL_set0_wbio(s
, wbio
);
1113 BIO
*SSL_get_rbio(const SSL
*s
)
1118 BIO
*SSL_get_wbio(const SSL
*s
)
1120 if (s
->bbio
!= NULL
) {
1122 * If |bbio| is active, the true caller-configured BIO is its
1125 return BIO_next(s
->bbio
);
1130 int SSL_get_fd(const SSL
*s
)
1132 return SSL_get_rfd(s
);
1135 int SSL_get_rfd(const SSL
*s
)
1140 b
= SSL_get_rbio(s
);
1141 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1143 BIO_get_fd(r
, &ret
);
1147 int SSL_get_wfd(const SSL
*s
)
1152 b
= SSL_get_wbio(s
);
1153 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1155 BIO_get_fd(r
, &ret
);
1159 #ifndef OPENSSL_NO_SOCK
1160 int SSL_set_fd(SSL
*s
, int fd
)
1165 bio
= BIO_new(BIO_s_socket());
1168 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1171 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1172 SSL_set_bio(s
, bio
, bio
);
1178 int SSL_set_wfd(SSL
*s
, int fd
)
1180 BIO
*rbio
= SSL_get_rbio(s
);
1182 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1183 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1184 BIO
*bio
= BIO_new(BIO_s_socket());
1187 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1190 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1191 SSL_set0_wbio(s
, bio
);
1194 SSL_set0_wbio(s
, rbio
);
1199 int SSL_set_rfd(SSL
*s
, int fd
)
1201 BIO
*wbio
= SSL_get_wbio(s
);
1203 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1204 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1205 BIO
*bio
= BIO_new(BIO_s_socket());
1208 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1211 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1212 SSL_set0_rbio(s
, bio
);
1215 SSL_set0_rbio(s
, wbio
);
1222 /* return length of latest Finished message we sent, copy to 'buf' */
1223 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1227 if (s
->s3
!= NULL
) {
1228 ret
= s
->s3
->tmp
.finish_md_len
;
1231 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1236 /* return length of latest Finished message we expected, copy to 'buf' */
1237 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1241 if (s
->s3
!= NULL
) {
1242 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1245 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1250 int SSL_get_verify_mode(const SSL
*s
)
1252 return (s
->verify_mode
);
1255 int SSL_get_verify_depth(const SSL
*s
)
1257 return X509_VERIFY_PARAM_get_depth(s
->param
);
1260 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1261 return (s
->verify_callback
);
1264 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1266 return (ctx
->verify_mode
);
1269 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1271 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1274 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1275 return (ctx
->default_verify_callback
);
1278 void SSL_set_verify(SSL
*s
, int mode
,
1279 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1281 s
->verify_mode
= mode
;
1282 if (callback
!= NULL
)
1283 s
->verify_callback
= callback
;
1286 void SSL_set_verify_depth(SSL
*s
, int depth
)
1288 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1291 void SSL_set_read_ahead(SSL
*s
, int yes
)
1293 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1296 int SSL_get_read_ahead(const SSL
*s
)
1298 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1301 int SSL_pending(const SSL
*s
)
1303 size_t pending
= s
->method
->ssl_pending(s
);
1306 * SSL_pending cannot work properly if read-ahead is enabled
1307 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1308 * impossible to fix since SSL_pending cannot report errors that may be
1309 * observed while scanning the new data. (Note that SSL_pending() is
1310 * often used as a boolean value, so we'd better not return -1.)
1312 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1313 * we just return INT_MAX.
1315 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1318 int SSL_has_pending(const SSL
*s
)
1321 * Similar to SSL_pending() but returns a 1 to indicate that we have
1322 * unprocessed data available or 0 otherwise (as opposed to the number of
1323 * bytes available). Unlike SSL_pending() this will take into account
1324 * read_ahead data. A 1 return simply indicates that we have unprocessed
1325 * data. That data may not result in any application data, or we may fail
1326 * to parse the records for some reason.
1328 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1331 return RECORD_LAYER_read_pending(&s
->rlayer
);
1334 X509
*SSL_get_peer_certificate(const SSL
*s
)
1338 if ((s
== NULL
) || (s
->session
== NULL
))
1341 r
= s
->session
->peer
;
1351 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1355 if ((s
== NULL
) || (s
->session
== NULL
))
1358 r
= s
->session
->peer_chain
;
1361 * If we are a client, cert_chain includes the peer's own certificate; if
1362 * we are a server, it does not.
1369 * Now in theory, since the calling process own 't' it should be safe to
1370 * modify. We need to be able to read f without being hassled
1372 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1375 /* Do we need to to SSL locking? */
1376 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1381 * what if we are setup for one protocol version but want to talk another
1383 if (t
->method
!= f
->method
) {
1384 t
->method
->ssl_free(t
);
1385 t
->method
= f
->method
;
1386 if (t
->method
->ssl_new(t
) == 0)
1390 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1391 ssl_cert_free(t
->cert
);
1393 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1400 /* Fix this so it checks all the valid key/cert options */
1401 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1403 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1404 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1407 if (ctx
->cert
->key
->privatekey
== NULL
) {
1408 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1411 return (X509_check_private_key
1412 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1415 /* Fix this function so that it takes an optional type parameter */
1416 int SSL_check_private_key(const SSL
*ssl
)
1419 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1422 if (ssl
->cert
->key
->x509
== NULL
) {
1423 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1426 if (ssl
->cert
->key
->privatekey
== NULL
) {
1427 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1430 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1431 ssl
->cert
->key
->privatekey
));
1434 int SSL_waiting_for_async(SSL
*s
)
1442 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1444 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1448 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1451 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1452 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1454 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1458 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1462 int SSL_accept(SSL
*s
)
1464 if (s
->handshake_func
== NULL
) {
1465 /* Not properly initialized yet */
1466 SSL_set_accept_state(s
);
1469 return SSL_do_handshake(s
);
1472 int SSL_connect(SSL
*s
)
1474 if (s
->handshake_func
== NULL
) {
1475 /* Not properly initialized yet */
1476 SSL_set_connect_state(s
);
1479 return SSL_do_handshake(s
);
1482 long SSL_get_default_timeout(const SSL
*s
)
1484 return (s
->method
->get_timeout());
1487 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1488 int (*func
) (void *))
1491 if (s
->waitctx
== NULL
) {
1492 s
->waitctx
= ASYNC_WAIT_CTX_new();
1493 if (s
->waitctx
== NULL
)
1496 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1497 sizeof(struct ssl_async_args
))) {
1499 s
->rwstate
= SSL_NOTHING
;
1500 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1503 s
->rwstate
= SSL_ASYNC_PAUSED
;
1506 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1512 s
->rwstate
= SSL_NOTHING
;
1513 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1514 /* Shouldn't happen */
1519 static int ssl_io_intern(void *vargs
)
1521 struct ssl_async_args
*args
;
1526 args
= (struct ssl_async_args
*)vargs
;
1530 switch (args
->type
) {
1532 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1534 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1536 return args
->f
.func_other(s
);
1541 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1543 if (s
->handshake_func
== NULL
) {
1544 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1548 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1549 s
->rwstate
= SSL_NOTHING
;
1553 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1554 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1555 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1559 * If we are a client and haven't received the ServerHello etc then we
1562 ossl_statem_check_finish_init(s
, 0);
1564 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1565 struct ssl_async_args args
;
1571 args
.type
= READFUNC
;
1572 args
.f
.func_read
= s
->method
->ssl_read
;
1574 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1575 *readbytes
= s
->asyncrw
;
1578 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1582 int SSL_read(SSL
*s
, void *buf
, int num
)
1588 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1592 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1595 * The cast is safe here because ret should be <= INT_MAX because num is
1599 ret
= (int)readbytes
;
1604 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1606 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1613 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1618 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1619 return SSL_READ_EARLY_DATA_ERROR
;
1622 switch (s
->early_data_state
) {
1623 case SSL_EARLY_DATA_NONE
:
1624 if (!SSL_in_before(s
)) {
1625 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1626 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1627 return SSL_READ_EARLY_DATA_ERROR
;
1631 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1632 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1633 ret
= SSL_accept(s
);
1636 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1637 return SSL_READ_EARLY_DATA_ERROR
;
1641 case SSL_EARLY_DATA_READ_RETRY
:
1642 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1643 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1644 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1646 * State machine will update early_data_state to
1647 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1650 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1651 != SSL_EARLY_DATA_FINISHED_READING
)) {
1652 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1653 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1654 : SSL_READ_EARLY_DATA_ERROR
;
1657 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1660 return SSL_READ_EARLY_DATA_FINISH
;
1663 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1664 return SSL_READ_EARLY_DATA_ERROR
;
1668 int SSL_get_early_data_status(const SSL
*s
)
1670 return s
->ext
.early_data
;
1673 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1675 if (s
->handshake_func
== NULL
) {
1676 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1680 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1683 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1684 struct ssl_async_args args
;
1690 args
.type
= READFUNC
;
1691 args
.f
.func_read
= s
->method
->ssl_peek
;
1693 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1694 *readbytes
= s
->asyncrw
;
1697 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1701 int SSL_peek(SSL
*s
, void *buf
, int num
)
1707 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1711 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1714 * The cast is safe here because ret should be <= INT_MAX because num is
1718 ret
= (int)readbytes
;
1724 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1726 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1733 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1735 if (s
->handshake_func
== NULL
) {
1736 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1740 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1741 s
->rwstate
= SSL_NOTHING
;
1742 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1746 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1747 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1748 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1749 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1752 /* If we are a client and haven't sent the Finished we better do that */
1753 ossl_statem_check_finish_init(s
, 1);
1755 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1757 struct ssl_async_args args
;
1760 args
.buf
= (void *)buf
;
1762 args
.type
= WRITEFUNC
;
1763 args
.f
.func_write
= s
->method
->ssl_write
;
1765 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1766 *written
= s
->asyncrw
;
1769 return s
->method
->ssl_write(s
, buf
, num
, written
);
1773 int SSL_write(SSL
*s
, const void *buf
, int num
)
1779 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1783 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1786 * The cast is safe here because ret should be <= INT_MAX because num is
1795 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1797 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1804 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1806 int ret
, early_data_state
;
1808 switch (s
->early_data_state
) {
1809 case SSL_EARLY_DATA_NONE
:
1811 || !SSL_in_before(s
)
1812 || s
->session
== NULL
1813 || s
->session
->ext
.max_early_data
== 0) {
1814 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1815 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1820 case SSL_EARLY_DATA_CONNECT_RETRY
:
1821 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1822 ret
= SSL_connect(s
);
1825 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1830 case SSL_EARLY_DATA_WRITE_RETRY
:
1831 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1832 ret
= SSL_write_ex(s
, buf
, num
, written
);
1833 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1836 case SSL_EARLY_DATA_FINISHED_READING
:
1837 case SSL_EARLY_DATA_READ_RETRY
:
1838 early_data_state
= s
->early_data_state
;
1839 /* We are a server writing to an unauthenticated client */
1840 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1841 ret
= SSL_write_ex(s
, buf
, num
, written
);
1842 s
->early_data_state
= early_data_state
;
1846 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1851 int SSL_shutdown(SSL
*s
)
1854 * Note that this function behaves differently from what one might
1855 * expect. Return values are 0 for no success (yet), 1 for success; but
1856 * calling it once is usually not enough, even if blocking I/O is used
1857 * (see ssl3_shutdown).
1860 if (s
->handshake_func
== NULL
) {
1861 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1865 if (!SSL_in_init(s
)) {
1866 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1867 struct ssl_async_args args
;
1870 args
.type
= OTHERFUNC
;
1871 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1873 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1875 return s
->method
->ssl_shutdown(s
);
1878 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1883 int SSL_key_update(SSL
*s
, int updatetype
)
1886 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1887 * negotiated, and that it is appropriate to call SSL_key_update() instead
1888 * of SSL_renegotiate().
1890 if (!SSL_IS_TLS13(s
)) {
1891 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1895 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1896 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1897 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1901 if (!SSL_is_init_finished(s
)) {
1902 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1906 ossl_statem_set_in_init(s
, 1);
1907 s
->key_update
= updatetype
;
1911 int SSL_get_key_update_type(SSL
*s
)
1913 return s
->key_update
;
1916 int SSL_renegotiate(SSL
*s
)
1918 if (SSL_IS_TLS13(s
)) {
1919 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1923 if (s
->renegotiate
== 0)
1928 return (s
->method
->ssl_renegotiate(s
));
1931 int SSL_renegotiate_abbreviated(SSL
*s
)
1933 if (SSL_IS_TLS13(s
))
1936 if (s
->renegotiate
== 0)
1941 return (s
->method
->ssl_renegotiate(s
));
1944 int SSL_renegotiate_pending(SSL
*s
)
1947 * becomes true when negotiation is requested; false again once a
1948 * handshake has finished
1950 return (s
->renegotiate
!= 0);
1953 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1958 case SSL_CTRL_GET_READ_AHEAD
:
1959 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1960 case SSL_CTRL_SET_READ_AHEAD
:
1961 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1962 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1965 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1966 s
->msg_callback_arg
= parg
;
1970 return (s
->mode
|= larg
);
1971 case SSL_CTRL_CLEAR_MODE
:
1972 return (s
->mode
&= ~larg
);
1973 case SSL_CTRL_GET_MAX_CERT_LIST
:
1974 return (long)(s
->max_cert_list
);
1975 case SSL_CTRL_SET_MAX_CERT_LIST
:
1978 l
= (long)s
->max_cert_list
;
1979 s
->max_cert_list
= (size_t)larg
;
1981 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1982 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1984 s
->max_send_fragment
= larg
;
1985 if (s
->max_send_fragment
< s
->split_send_fragment
)
1986 s
->split_send_fragment
= s
->max_send_fragment
;
1988 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1989 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1991 s
->split_send_fragment
= larg
;
1993 case SSL_CTRL_SET_MAX_PIPELINES
:
1994 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1996 s
->max_pipelines
= larg
;
1998 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2000 case SSL_CTRL_GET_RI_SUPPORT
:
2002 return s
->s3
->send_connection_binding
;
2005 case SSL_CTRL_CERT_FLAGS
:
2006 return (s
->cert
->cert_flags
|= larg
);
2007 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2008 return (s
->cert
->cert_flags
&= ~larg
);
2010 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2012 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2014 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2015 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2017 return TLS_CIPHER_LEN
;
2019 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2020 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2022 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2026 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2027 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2028 &s
->min_proto_version
);
2029 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2030 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2031 &s
->max_proto_version
);
2033 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2037 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2040 case SSL_CTRL_SET_MSG_CALLBACK
:
2041 s
->msg_callback
= (void (*)
2042 (int write_p
, int version
, int content_type
,
2043 const void *buf
, size_t len
, SSL
*ssl
,
2048 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2052 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2054 return ctx
->sessions
;
2057 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2060 /* For some cases with ctx == NULL perform syntax checks */
2063 #ifndef OPENSSL_NO_EC
2064 case SSL_CTRL_SET_GROUPS_LIST
:
2065 return tls1_set_groups_list(NULL
, NULL
, parg
);
2067 case SSL_CTRL_SET_SIGALGS_LIST
:
2068 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2069 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2076 case SSL_CTRL_GET_READ_AHEAD
:
2077 return (ctx
->read_ahead
);
2078 case SSL_CTRL_SET_READ_AHEAD
:
2079 l
= ctx
->read_ahead
;
2080 ctx
->read_ahead
= larg
;
2083 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2084 ctx
->msg_callback_arg
= parg
;
2087 case SSL_CTRL_GET_MAX_CERT_LIST
:
2088 return (long)(ctx
->max_cert_list
);
2089 case SSL_CTRL_SET_MAX_CERT_LIST
:
2092 l
= (long)ctx
->max_cert_list
;
2093 ctx
->max_cert_list
= (size_t)larg
;
2096 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2099 l
= (long)ctx
->session_cache_size
;
2100 ctx
->session_cache_size
= (size_t)larg
;
2102 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2103 return (long)(ctx
->session_cache_size
);
2104 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2105 l
= ctx
->session_cache_mode
;
2106 ctx
->session_cache_mode
= larg
;
2108 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2109 return (ctx
->session_cache_mode
);
2111 case SSL_CTRL_SESS_NUMBER
:
2112 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2113 case SSL_CTRL_SESS_CONNECT
:
2114 return (ctx
->stats
.sess_connect
);
2115 case SSL_CTRL_SESS_CONNECT_GOOD
:
2116 return (ctx
->stats
.sess_connect_good
);
2117 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2118 return (ctx
->stats
.sess_connect_renegotiate
);
2119 case SSL_CTRL_SESS_ACCEPT
:
2120 return (ctx
->stats
.sess_accept
);
2121 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2122 return (ctx
->stats
.sess_accept_good
);
2123 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2124 return (ctx
->stats
.sess_accept_renegotiate
);
2125 case SSL_CTRL_SESS_HIT
:
2126 return (ctx
->stats
.sess_hit
);
2127 case SSL_CTRL_SESS_CB_HIT
:
2128 return (ctx
->stats
.sess_cb_hit
);
2129 case SSL_CTRL_SESS_MISSES
:
2130 return (ctx
->stats
.sess_miss
);
2131 case SSL_CTRL_SESS_TIMEOUTS
:
2132 return (ctx
->stats
.sess_timeout
);
2133 case SSL_CTRL_SESS_CACHE_FULL
:
2134 return (ctx
->stats
.sess_cache_full
);
2136 return (ctx
->mode
|= larg
);
2137 case SSL_CTRL_CLEAR_MODE
:
2138 return (ctx
->mode
&= ~larg
);
2139 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2140 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2142 ctx
->max_send_fragment
= larg
;
2143 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2144 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2146 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2147 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2149 ctx
->split_send_fragment
= larg
;
2151 case SSL_CTRL_SET_MAX_PIPELINES
:
2152 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2154 ctx
->max_pipelines
= larg
;
2156 case SSL_CTRL_CERT_FLAGS
:
2157 return (ctx
->cert
->cert_flags
|= larg
);
2158 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2159 return (ctx
->cert
->cert_flags
&= ~larg
);
2160 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2161 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2162 &ctx
->min_proto_version
);
2163 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2164 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2165 &ctx
->max_proto_version
);
2167 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2171 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2174 case SSL_CTRL_SET_MSG_CALLBACK
:
2175 ctx
->msg_callback
= (void (*)
2176 (int write_p
, int version
, int content_type
,
2177 const void *buf
, size_t len
, SSL
*ssl
,
2182 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2186 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2195 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2196 const SSL_CIPHER
*const *bp
)
2198 if ((*ap
)->id
> (*bp
)->id
)
2200 if ((*ap
)->id
< (*bp
)->id
)
2205 /** return a STACK of the ciphers available for the SSL and in order of
2207 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2210 if (s
->cipher_list
!= NULL
) {
2211 return (s
->cipher_list
);
2212 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2213 return (s
->ctx
->cipher_list
);
2219 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2221 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2223 return s
->session
->ciphers
;
2226 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2228 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2230 ciphers
= SSL_get_ciphers(s
);
2233 ssl_set_client_disabled(s
);
2234 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2235 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2236 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2238 sk
= sk_SSL_CIPHER_new_null();
2241 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2242 sk_SSL_CIPHER_free(sk
);
2250 /** return a STACK of the ciphers available for the SSL and in order of
2252 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2255 if (s
->cipher_list_by_id
!= NULL
) {
2256 return (s
->cipher_list_by_id
);
2257 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2258 return (s
->ctx
->cipher_list_by_id
);
2264 /** The old interface to get the same thing as SSL_get_ciphers() */
2265 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2267 const SSL_CIPHER
*c
;
2268 STACK_OF(SSL_CIPHER
) *sk
;
2272 sk
= SSL_get_ciphers(s
);
2273 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2275 c
= sk_SSL_CIPHER_value(sk
, n
);
2281 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2283 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2286 return ctx
->cipher_list
;
2290 /** specify the ciphers to be used by default by the SSL_CTX */
2291 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2293 STACK_OF(SSL_CIPHER
) *sk
;
2295 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2296 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2298 * ssl_create_cipher_list may return an empty stack if it was unable to
2299 * find a cipher matching the given rule string (for example if the rule
2300 * string specifies a cipher which has been disabled). This is not an
2301 * error as far as ssl_create_cipher_list is concerned, and hence
2302 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2306 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2307 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2313 /** specify the ciphers to be used by the SSL */
2314 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2316 STACK_OF(SSL_CIPHER
) *sk
;
2318 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2319 &s
->cipher_list_by_id
, str
, s
->cert
);
2320 /* see comment in SSL_CTX_set_cipher_list */
2323 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2324 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2330 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2333 STACK_OF(SSL_CIPHER
) *sk
;
2334 const SSL_CIPHER
*c
;
2337 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2341 sk
= s
->session
->ciphers
;
2343 if (sk_SSL_CIPHER_num(sk
) == 0)
2346 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2349 c
= sk_SSL_CIPHER_value(sk
, i
);
2350 n
= strlen(c
->name
);
2357 memcpy(p
, c
->name
, n
+ 1);
2366 /** return a servername extension value if provided in Client Hello, or NULL.
2367 * So far, only host_name types are defined (RFC 3546).
2370 const char *SSL_get_servername(const SSL
*s
, const int type
)
2372 if (type
!= TLSEXT_NAMETYPE_host_name
)
2375 return s
->session
&& !s
->ext
.hostname
?
2376 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2379 int SSL_get_servername_type(const SSL
*s
)
2382 && (!s
->ext
.hostname
? s
->session
->
2383 ext
.hostname
: s
->ext
.hostname
))
2384 return TLSEXT_NAMETYPE_host_name
;
2389 * SSL_select_next_proto implements the standard protocol selection. It is
2390 * expected that this function is called from the callback set by
2391 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2392 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2393 * not included in the length. A byte string of length 0 is invalid. No byte
2394 * string may be truncated. The current, but experimental algorithm for
2395 * selecting the protocol is: 1) If the server doesn't support NPN then this
2396 * is indicated to the callback. In this case, the client application has to
2397 * abort the connection or have a default application level protocol. 2) If
2398 * the server supports NPN, but advertises an empty list then the client
2399 * selects the first protocol in its list, but indicates via the API that this
2400 * fallback case was enacted. 3) Otherwise, the client finds the first
2401 * protocol in the server's list that it supports and selects this protocol.
2402 * This is because it's assumed that the server has better information about
2403 * which protocol a client should use. 4) If the client doesn't support any
2404 * of the server's advertised protocols, then this is treated the same as
2405 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2406 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2408 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2409 const unsigned char *server
,
2410 unsigned int server_len
,
2411 const unsigned char *client
, unsigned int client_len
)
2414 const unsigned char *result
;
2415 int status
= OPENSSL_NPN_UNSUPPORTED
;
2418 * For each protocol in server preference order, see if we support it.
2420 for (i
= 0; i
< server_len
;) {
2421 for (j
= 0; j
< client_len
;) {
2422 if (server
[i
] == client
[j
] &&
2423 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2424 /* We found a match */
2425 result
= &server
[i
];
2426 status
= OPENSSL_NPN_NEGOTIATED
;
2436 /* There's no overlap between our protocols and the server's list. */
2438 status
= OPENSSL_NPN_NO_OVERLAP
;
2441 *out
= (unsigned char *)result
+ 1;
2442 *outlen
= result
[0];
2446 #ifndef OPENSSL_NO_NEXTPROTONEG
2448 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2449 * client's requested protocol for this connection and returns 0. If the
2450 * client didn't request any protocol, then *data is set to NULL. Note that
2451 * the client can request any protocol it chooses. The value returned from
2452 * this function need not be a member of the list of supported protocols
2453 * provided by the callback.
2455 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2462 *len
= (unsigned int)s
->ext
.npn_len
;
2467 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2468 * a TLS server needs a list of supported protocols for Next Protocol
2469 * Negotiation. The returned list must be in wire format. The list is
2470 * returned by setting |out| to point to it and |outlen| to its length. This
2471 * memory will not be modified, but one should assume that the SSL* keeps a
2472 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2473 * wishes to advertise. Otherwise, no such extension will be included in the
2476 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2477 SSL_CTX_npn_advertised_cb_func cb
,
2480 ctx
->ext
.npn_advertised_cb
= cb
;
2481 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2485 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2486 * client needs to select a protocol from the server's provided list. |out|
2487 * must be set to point to the selected protocol (which may be within |in|).
2488 * The length of the protocol name must be written into |outlen|. The
2489 * server's advertised protocols are provided in |in| and |inlen|. The
2490 * callback can assume that |in| is syntactically valid. The client must
2491 * select a protocol. It is fatal to the connection if this callback returns
2492 * a value other than SSL_TLSEXT_ERR_OK.
2494 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2495 SSL_CTX_npn_select_cb_func cb
,
2498 ctx
->ext
.npn_select_cb
= cb
;
2499 ctx
->ext
.npn_select_cb_arg
= arg
;
2504 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2505 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2506 * length-prefixed strings). Returns 0 on success.
2508 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2509 unsigned int protos_len
)
2511 OPENSSL_free(ctx
->ext
.alpn
);
2512 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2513 if (ctx
->ext
.alpn
== NULL
) {
2514 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2517 ctx
->ext
.alpn_len
= protos_len
;
2523 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2524 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2525 * length-prefixed strings). Returns 0 on success.
2527 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2528 unsigned int protos_len
)
2530 OPENSSL_free(ssl
->ext
.alpn
);
2531 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2532 if (ssl
->ext
.alpn
== NULL
) {
2533 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2536 ssl
->ext
.alpn_len
= protos_len
;
2542 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2543 * called during ClientHello processing in order to select an ALPN protocol
2544 * from the client's list of offered protocols.
2546 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2547 SSL_CTX_alpn_select_cb_func cb
,
2550 ctx
->ext
.alpn_select_cb
= cb
;
2551 ctx
->ext
.alpn_select_cb_arg
= arg
;
2555 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2556 * On return it sets |*data| to point to |*len| bytes of protocol name
2557 * (not including the leading length-prefix byte). If the server didn't
2558 * respond with a negotiated protocol then |*len| will be zero.
2560 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2565 *data
= ssl
->s3
->alpn_selected
;
2569 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2572 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2573 const char *label
, size_t llen
,
2574 const unsigned char *p
, size_t plen
,
2577 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2580 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2585 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2587 const unsigned char *session_id
= a
->session_id
;
2589 unsigned char tmp_storage
[4];
2591 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2592 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2593 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2594 session_id
= tmp_storage
;
2598 ((unsigned long)session_id
[0]) |
2599 ((unsigned long)session_id
[1] << 8L) |
2600 ((unsigned long)session_id
[2] << 16L) |
2601 ((unsigned long)session_id
[3] << 24L);
2606 * NB: If this function (or indeed the hash function which uses a sort of
2607 * coarser function than this one) is changed, ensure
2608 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2609 * being able to construct an SSL_SESSION that will collide with any existing
2610 * session with a matching session ID.
2612 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2614 if (a
->ssl_version
!= b
->ssl_version
)
2616 if (a
->session_id_length
!= b
->session_id_length
)
2618 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2622 * These wrapper functions should remain rather than redeclaring
2623 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2624 * variable. The reason is that the functions aren't static, they're exposed
2628 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2630 SSL_CTX
*ret
= NULL
;
2633 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2637 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2640 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2641 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2644 ret
= OPENSSL_zalloc(sizeof(*ret
));
2649 ret
->min_proto_version
= 0;
2650 ret
->max_proto_version
= 0;
2651 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2652 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2653 /* We take the system default. */
2654 ret
->session_timeout
= meth
->get_timeout();
2655 ret
->references
= 1;
2656 ret
->lock
= CRYPTO_THREAD_lock_new();
2657 if (ret
->lock
== NULL
) {
2658 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2662 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2663 ret
->verify_mode
= SSL_VERIFY_NONE
;
2664 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2667 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2668 if (ret
->sessions
== NULL
)
2670 ret
->cert_store
= X509_STORE_new();
2671 if (ret
->cert_store
== NULL
)
2673 #ifndef OPENSSL_NO_CT
2674 ret
->ctlog_store
= CTLOG_STORE_new();
2675 if (ret
->ctlog_store
== NULL
)
2678 if (!ssl_create_cipher_list(ret
->method
,
2679 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2680 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2681 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2682 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2686 ret
->param
= X509_VERIFY_PARAM_new();
2687 if (ret
->param
== NULL
)
2690 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2691 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2694 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2695 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2699 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2702 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2705 /* No compression for DTLS */
2706 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2707 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2709 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2710 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2712 /* Setup RFC5077 ticket keys */
2713 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2714 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2715 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2716 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2717 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2718 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2719 ret
->options
|= SSL_OP_NO_TICKET
;
2721 #ifndef OPENSSL_NO_SRP
2722 if (!SSL_CTX_SRP_CTX_init(ret
))
2725 #ifndef OPENSSL_NO_ENGINE
2726 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2727 # define eng_strx(x) #x
2728 # define eng_str(x) eng_strx(x)
2729 /* Use specific client engine automatically... ignore errors */
2732 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2735 ENGINE_load_builtin_engines();
2736 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2738 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2744 * Default is to connect to non-RI servers. When RI is more widely
2745 * deployed might change this.
2747 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2749 * Disable compression by default to prevent CRIME. Applications can
2750 * re-enable compression by configuring
2751 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2752 * or by using the SSL_CONF library.
2754 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2756 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2759 * Default max early data is a fully loaded single record. Could be split
2760 * across multiple records in practice
2762 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2766 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2772 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2776 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2779 REF_PRINT_COUNT("SSL_CTX", ctx
);
2780 REF_ASSERT_ISNT(i
< 2);
2781 return ((i
> 1) ? 1 : 0);
2784 void SSL_CTX_free(SSL_CTX
*a
)
2791 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2792 REF_PRINT_COUNT("SSL_CTX", a
);
2795 REF_ASSERT_ISNT(i
< 0);
2797 X509_VERIFY_PARAM_free(a
->param
);
2798 dane_ctx_final(&a
->dane
);
2801 * Free internal session cache. However: the remove_cb() may reference
2802 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2803 * after the sessions were flushed.
2804 * As the ex_data handling routines might also touch the session cache,
2805 * the most secure solution seems to be: empty (flush) the cache, then
2806 * free ex_data, then finally free the cache.
2807 * (See ticket [openssl.org #212].)
2809 if (a
->sessions
!= NULL
)
2810 SSL_CTX_flush_sessions(a
, 0);
2812 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2813 lh_SSL_SESSION_free(a
->sessions
);
2814 X509_STORE_free(a
->cert_store
);
2815 #ifndef OPENSSL_NO_CT
2816 CTLOG_STORE_free(a
->ctlog_store
);
2818 sk_SSL_CIPHER_free(a
->cipher_list
);
2819 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2820 ssl_cert_free(a
->cert
);
2821 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2822 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2823 a
->comp_methods
= NULL
;
2824 #ifndef OPENSSL_NO_SRTP
2825 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2827 #ifndef OPENSSL_NO_SRP
2828 SSL_CTX_SRP_CTX_free(a
);
2830 #ifndef OPENSSL_NO_ENGINE
2831 ENGINE_finish(a
->client_cert_engine
);
2834 #ifndef OPENSSL_NO_EC
2835 OPENSSL_free(a
->ext
.ecpointformats
);
2836 OPENSSL_free(a
->ext
.supportedgroups
);
2838 OPENSSL_free(a
->ext
.alpn
);
2840 CRYPTO_THREAD_lock_free(a
->lock
);
2845 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2847 ctx
->default_passwd_callback
= cb
;
2850 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2852 ctx
->default_passwd_callback_userdata
= u
;
2855 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2857 return ctx
->default_passwd_callback
;
2860 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2862 return ctx
->default_passwd_callback_userdata
;
2865 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2867 s
->default_passwd_callback
= cb
;
2870 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2872 s
->default_passwd_callback_userdata
= u
;
2875 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2877 return s
->default_passwd_callback
;
2880 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2882 return s
->default_passwd_callback_userdata
;
2885 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2886 int (*cb
) (X509_STORE_CTX
*, void *),
2889 ctx
->app_verify_callback
= cb
;
2890 ctx
->app_verify_arg
= arg
;
2893 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2894 int (*cb
) (int, X509_STORE_CTX
*))
2896 ctx
->verify_mode
= mode
;
2897 ctx
->default_verify_callback
= cb
;
2900 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2902 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2905 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2907 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2910 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2912 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2915 void ssl_set_masks(SSL
*s
)
2918 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2919 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2920 unsigned long mask_k
, mask_a
;
2921 #ifndef OPENSSL_NO_EC
2922 int have_ecc_cert
, ecdsa_ok
;
2927 #ifndef OPENSSL_NO_DH
2928 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2933 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2934 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2935 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2936 #ifndef OPENSSL_NO_EC
2937 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2943 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2944 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2947 #ifndef OPENSSL_NO_GOST
2948 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2949 mask_k
|= SSL_kGOST
;
2950 mask_a
|= SSL_aGOST12
;
2952 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2953 mask_k
|= SSL_kGOST
;
2954 mask_a
|= SSL_aGOST12
;
2956 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2957 mask_k
|= SSL_kGOST
;
2958 mask_a
|= SSL_aGOST01
;
2968 if (rsa_enc
|| rsa_sign
) {
2976 mask_a
|= SSL_aNULL
;
2979 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2980 * depending on the key usage extension.
2982 #ifndef OPENSSL_NO_EC
2983 if (have_ecc_cert
) {
2985 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2986 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2987 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2990 mask_a
|= SSL_aECDSA
;
2994 #ifndef OPENSSL_NO_EC
2995 mask_k
|= SSL_kECDHE
;
2998 #ifndef OPENSSL_NO_PSK
3001 if (mask_k
& SSL_kRSA
)
3002 mask_k
|= SSL_kRSAPSK
;
3003 if (mask_k
& SSL_kDHE
)
3004 mask_k
|= SSL_kDHEPSK
;
3005 if (mask_k
& SSL_kECDHE
)
3006 mask_k
|= SSL_kECDHEPSK
;
3009 s
->s3
->tmp
.mask_k
= mask_k
;
3010 s
->s3
->tmp
.mask_a
= mask_a
;
3013 #ifndef OPENSSL_NO_EC
3015 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3017 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3018 /* key usage, if present, must allow signing */
3019 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3020 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3021 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3025 return 1; /* all checks are ok */
3030 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3031 size_t *serverinfo_length
)
3033 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3034 *serverinfo_length
= 0;
3036 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3039 *serverinfo
= cpk
->serverinfo
;
3040 *serverinfo_length
= cpk
->serverinfo_length
;
3044 void ssl_update_cache(SSL
*s
, int mode
)
3049 * If the session_id_length is 0, we are not supposed to cache it, and it
3050 * would be rather hard to do anyway :-)
3052 if (s
->session
->session_id_length
== 0)
3055 i
= s
->session_ctx
->session_cache_mode
;
3056 if ((i
& mode
) && (!s
->hit
)
3057 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3058 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3059 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3060 SSL_SESSION_up_ref(s
->session
);
3061 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3062 SSL_SESSION_free(s
->session
);
3065 /* auto flush every 255 connections */
3066 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3067 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3068 ? s
->session_ctx
->stats
.sess_connect_good
3069 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3070 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3075 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3080 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3085 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3089 if (s
->method
!= meth
) {
3090 const SSL_METHOD
*sm
= s
->method
;
3091 int (*hf
) (SSL
*) = s
->handshake_func
;
3093 if (sm
->version
== meth
->version
)
3098 ret
= s
->method
->ssl_new(s
);
3101 if (hf
== sm
->ssl_connect
)
3102 s
->handshake_func
= meth
->ssl_connect
;
3103 else if (hf
== sm
->ssl_accept
)
3104 s
->handshake_func
= meth
->ssl_accept
;
3109 int SSL_get_error(const SSL
*s
, int i
)
3116 return (SSL_ERROR_NONE
);
3119 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3120 * where we do encode the error
3122 if ((l
= ERR_peek_error()) != 0) {
3123 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3124 return (SSL_ERROR_SYSCALL
);
3126 return (SSL_ERROR_SSL
);
3129 if (SSL_want_read(s
)) {
3130 bio
= SSL_get_rbio(s
);
3131 if (BIO_should_read(bio
))
3132 return (SSL_ERROR_WANT_READ
);
3133 else if (BIO_should_write(bio
))
3135 * This one doesn't make too much sense ... We never try to write
3136 * to the rbio, and an application program where rbio and wbio
3137 * are separate couldn't even know what it should wait for.
3138 * However if we ever set s->rwstate incorrectly (so that we have
3139 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3140 * wbio *are* the same, this test works around that bug; so it
3141 * might be safer to keep it.
3143 return (SSL_ERROR_WANT_WRITE
);
3144 else if (BIO_should_io_special(bio
)) {
3145 reason
= BIO_get_retry_reason(bio
);
3146 if (reason
== BIO_RR_CONNECT
)
3147 return (SSL_ERROR_WANT_CONNECT
);
3148 else if (reason
== BIO_RR_ACCEPT
)
3149 return (SSL_ERROR_WANT_ACCEPT
);
3151 return (SSL_ERROR_SYSCALL
); /* unknown */
3155 if (SSL_want_write(s
)) {
3156 /* Access wbio directly - in order to use the buffered bio if present */
3158 if (BIO_should_write(bio
))
3159 return (SSL_ERROR_WANT_WRITE
);
3160 else if (BIO_should_read(bio
))
3162 * See above (SSL_want_read(s) with BIO_should_write(bio))
3164 return (SSL_ERROR_WANT_READ
);
3165 else if (BIO_should_io_special(bio
)) {
3166 reason
= BIO_get_retry_reason(bio
);
3167 if (reason
== BIO_RR_CONNECT
)
3168 return (SSL_ERROR_WANT_CONNECT
);
3169 else if (reason
== BIO_RR_ACCEPT
)
3170 return (SSL_ERROR_WANT_ACCEPT
);
3172 return (SSL_ERROR_SYSCALL
);
3175 if (SSL_want_x509_lookup(s
))
3176 return (SSL_ERROR_WANT_X509_LOOKUP
);
3177 if (SSL_want_async(s
))
3178 return SSL_ERROR_WANT_ASYNC
;
3179 if (SSL_want_async_job(s
))
3180 return SSL_ERROR_WANT_ASYNC_JOB
;
3181 if (SSL_want_early(s
))
3182 return SSL_ERROR_WANT_EARLY
;
3184 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3185 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3186 return (SSL_ERROR_ZERO_RETURN
);
3188 return (SSL_ERROR_SYSCALL
);
3191 static int ssl_do_handshake_intern(void *vargs
)
3193 struct ssl_async_args
*args
;
3196 args
= (struct ssl_async_args
*)vargs
;
3199 return s
->handshake_func(s
);
3202 int SSL_do_handshake(SSL
*s
)
3206 if (s
->handshake_func
== NULL
) {
3207 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3211 ossl_statem_check_finish_init(s
, -1);
3213 s
->method
->ssl_renegotiate_check(s
, 0);
3215 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3216 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3217 struct ssl_async_args args
;
3221 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3223 ret
= s
->handshake_func(s
);
3229 void SSL_set_accept_state(SSL
*s
)
3233 ossl_statem_clear(s
);
3234 s
->handshake_func
= s
->method
->ssl_accept
;
3238 void SSL_set_connect_state(SSL
*s
)
3242 ossl_statem_clear(s
);
3243 s
->handshake_func
= s
->method
->ssl_connect
;
3247 int ssl_undefined_function(SSL
*s
)
3249 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3253 int ssl_undefined_void_function(void)
3255 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3256 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3260 int ssl_undefined_const_function(const SSL
*s
)
3265 const SSL_METHOD
*ssl_bad_method(int ver
)
3267 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3271 const char *ssl_protocol_to_string(int version
)
3275 case TLS1_3_VERSION
:
3278 case TLS1_2_VERSION
:
3281 case TLS1_1_VERSION
:
3296 case DTLS1_2_VERSION
:
3304 const char *SSL_get_version(const SSL
*s
)
3306 return ssl_protocol_to_string(s
->version
);
3309 SSL
*SSL_dup(SSL
*s
)
3311 STACK_OF(X509_NAME
) *sk
;
3316 /* If we're not quiescent, just up_ref! */
3317 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3318 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3323 * Otherwise, copy configuration state, and session if set.
3325 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3328 if (s
->session
!= NULL
) {
3330 * Arranges to share the same session via up_ref. This "copies"
3331 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3333 if (!SSL_copy_session_id(ret
, s
))
3337 * No session has been established yet, so we have to expect that
3338 * s->cert or ret->cert will be changed later -- they should not both
3339 * point to the same object, and thus we can't use
3340 * SSL_copy_session_id.
3342 if (!SSL_set_ssl_method(ret
, s
->method
))
3345 if (s
->cert
!= NULL
) {
3346 ssl_cert_free(ret
->cert
);
3347 ret
->cert
= ssl_cert_dup(s
->cert
);
3348 if (ret
->cert
== NULL
)
3352 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3353 (int)s
->sid_ctx_length
))
3357 if (!ssl_dane_dup(ret
, s
))
3359 ret
->version
= s
->version
;
3360 ret
->options
= s
->options
;
3361 ret
->mode
= s
->mode
;
3362 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3363 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3364 ret
->msg_callback
= s
->msg_callback
;
3365 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3366 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3367 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3368 ret
->generate_session_id
= s
->generate_session_id
;
3370 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3372 /* copy app data, a little dangerous perhaps */
3373 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3376 /* setup rbio, and wbio */
3377 if (s
->rbio
!= NULL
) {
3378 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3381 if (s
->wbio
!= NULL
) {
3382 if (s
->wbio
!= s
->rbio
) {
3383 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3386 BIO_up_ref(ret
->rbio
);
3387 ret
->wbio
= ret
->rbio
;
3391 ret
->server
= s
->server
;
3392 if (s
->handshake_func
) {
3394 SSL_set_accept_state(ret
);
3396 SSL_set_connect_state(ret
);
3398 ret
->shutdown
= s
->shutdown
;
3401 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3402 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3404 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3406 /* dup the cipher_list and cipher_list_by_id stacks */
3407 if (s
->cipher_list
!= NULL
) {
3408 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3411 if (s
->cipher_list_by_id
!= NULL
)
3412 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3416 /* Dup the client_CA list */
3417 if (s
->ca_names
!= NULL
) {
3418 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3421 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3422 xn
= sk_X509_NAME_value(sk
, i
);
3423 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3436 void ssl_clear_cipher_ctx(SSL
*s
)
3438 if (s
->enc_read_ctx
!= NULL
) {
3439 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3440 s
->enc_read_ctx
= NULL
;
3442 if (s
->enc_write_ctx
!= NULL
) {
3443 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3444 s
->enc_write_ctx
= NULL
;
3446 #ifndef OPENSSL_NO_COMP
3447 COMP_CTX_free(s
->expand
);
3449 COMP_CTX_free(s
->compress
);
3454 X509
*SSL_get_certificate(const SSL
*s
)
3456 if (s
->cert
!= NULL
)
3457 return (s
->cert
->key
->x509
);
3462 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3464 if (s
->cert
!= NULL
)
3465 return (s
->cert
->key
->privatekey
);
3470 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3472 if (ctx
->cert
!= NULL
)
3473 return ctx
->cert
->key
->x509
;
3478 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3480 if (ctx
->cert
!= NULL
)
3481 return ctx
->cert
->key
->privatekey
;
3486 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3488 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3489 return (s
->session
->cipher
);
3493 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3495 #ifndef OPENSSL_NO_COMP
3496 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3502 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3504 #ifndef OPENSSL_NO_COMP
3505 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3511 int ssl_init_wbio_buffer(SSL
*s
)
3515 if (s
->bbio
!= NULL
) {
3516 /* Already buffered. */
3520 bbio
= BIO_new(BIO_f_buffer());
3521 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3523 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3527 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3532 void ssl_free_wbio_buffer(SSL
*s
)
3534 /* callers ensure s is never null */
3535 if (s
->bbio
== NULL
)
3538 s
->wbio
= BIO_pop(s
->wbio
);
3539 assert(s
->wbio
!= NULL
);
3544 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3546 ctx
->quiet_shutdown
= mode
;
3549 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3551 return (ctx
->quiet_shutdown
);
3554 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3556 s
->quiet_shutdown
= mode
;
3559 int SSL_get_quiet_shutdown(const SSL
*s
)
3561 return (s
->quiet_shutdown
);
3564 void SSL_set_shutdown(SSL
*s
, int mode
)
3569 int SSL_get_shutdown(const SSL
*s
)
3574 int SSL_version(const SSL
*s
)
3579 int SSL_client_version(const SSL
*s
)
3581 return s
->client_version
;
3584 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3589 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3592 if (ssl
->ctx
== ctx
)
3595 ctx
= ssl
->session_ctx
;
3596 new_cert
= ssl_cert_dup(ctx
->cert
);
3597 if (new_cert
== NULL
) {
3601 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3602 ssl_cert_free(new_cert
);
3606 ssl_cert_free(ssl
->cert
);
3607 ssl
->cert
= new_cert
;
3610 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3611 * so setter APIs must prevent invalid lengths from entering the system.
3613 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3617 * If the session ID context matches that of the parent SSL_CTX,
3618 * inherit it from the new SSL_CTX as well. If however the context does
3619 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3620 * leave it unchanged.
3622 if ((ssl
->ctx
!= NULL
) &&
3623 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3624 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3625 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3626 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3629 SSL_CTX_up_ref(ctx
);
3630 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3636 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3638 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3641 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3643 X509_LOOKUP
*lookup
;
3645 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3648 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3650 /* Clear any errors if the default directory does not exist */
3656 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3658 X509_LOOKUP
*lookup
;
3660 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3664 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3666 /* Clear any errors if the default file does not exist */
3672 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3675 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3678 void SSL_set_info_callback(SSL
*ssl
,
3679 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3681 ssl
->info_callback
= cb
;
3685 * One compiler (Diab DCC) doesn't like argument names in returned function
3688 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3691 return ssl
->info_callback
;
3694 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3696 ssl
->verify_result
= arg
;
3699 long SSL_get_verify_result(const SSL
*ssl
)
3701 return (ssl
->verify_result
);
3704 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3707 return sizeof(ssl
->s3
->client_random
);
3708 if (outlen
> sizeof(ssl
->s3
->client_random
))
3709 outlen
= sizeof(ssl
->s3
->client_random
);
3710 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3714 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3717 return sizeof(ssl
->s3
->server_random
);
3718 if (outlen
> sizeof(ssl
->s3
->server_random
))
3719 outlen
= sizeof(ssl
->s3
->server_random
);
3720 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3724 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3725 unsigned char *out
, size_t outlen
)
3728 return session
->master_key_length
;
3729 if (outlen
> session
->master_key_length
)
3730 outlen
= session
->master_key_length
;
3731 memcpy(out
, session
->master_key
, outlen
);
3735 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3737 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3740 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3742 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3745 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3747 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3750 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3752 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3755 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3757 return (ctx
->cert_store
);
3760 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3762 X509_STORE_free(ctx
->cert_store
);
3763 ctx
->cert_store
= store
;
3766 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3769 X509_STORE_up_ref(store
);
3770 SSL_CTX_set_cert_store(ctx
, store
);
3773 int SSL_want(const SSL
*s
)
3775 return (s
->rwstate
);
3779 * \brief Set the callback for generating temporary DH keys.
3780 * \param ctx the SSL context.
3781 * \param dh the callback
3784 #ifndef OPENSSL_NO_DH
3785 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3786 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3789 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3792 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3795 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3799 #ifndef OPENSSL_NO_PSK
3800 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3802 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3803 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3806 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3807 if (identity_hint
!= NULL
) {
3808 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3809 if (ctx
->cert
->psk_identity_hint
== NULL
)
3812 ctx
->cert
->psk_identity_hint
= NULL
;
3816 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3821 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3822 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3825 OPENSSL_free(s
->cert
->psk_identity_hint
);
3826 if (identity_hint
!= NULL
) {
3827 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3828 if (s
->cert
->psk_identity_hint
== NULL
)
3831 s
->cert
->psk_identity_hint
= NULL
;
3835 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3837 if (s
== NULL
|| s
->session
== NULL
)
3839 return (s
->session
->psk_identity_hint
);
3842 const char *SSL_get_psk_identity(const SSL
*s
)
3844 if (s
== NULL
|| s
->session
== NULL
)
3846 return (s
->session
->psk_identity
);
3849 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3851 s
->psk_client_callback
= cb
;
3854 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3856 ctx
->psk_client_callback
= cb
;
3859 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3861 s
->psk_server_callback
= cb
;
3864 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3866 ctx
->psk_server_callback
= cb
;
3870 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3871 void (*cb
) (int write_p
, int version
,
3872 int content_type
, const void *buf
,
3873 size_t len
, SSL
*ssl
, void *arg
))
3875 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3878 void SSL_set_msg_callback(SSL
*ssl
,
3879 void (*cb
) (int write_p
, int version
,
3880 int content_type
, const void *buf
,
3881 size_t len
, SSL
*ssl
, void *arg
))
3883 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3886 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3887 int (*cb
) (SSL
*ssl
,
3891 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3892 (void (*)(void))cb
);
3895 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3896 int (*cb
) (SSL
*ssl
,
3897 int is_forward_secure
))
3899 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3900 (void (*)(void))cb
);
3903 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3904 size_t (*cb
) (SSL
*ssl
, int type
,
3905 size_t len
, void *arg
))
3907 ctx
->record_padding_cb
= cb
;
3910 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3912 ctx
->record_padding_arg
= arg
;
3915 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3917 return ctx
->record_padding_arg
;
3920 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3922 /* block size of 0 or 1 is basically no padding */
3923 if (block_size
== 1)
3924 ctx
->block_padding
= 0;
3925 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3926 ctx
->block_padding
= block_size
;
3932 void SSL_set_record_padding_callback(SSL
*ssl
,
3933 size_t (*cb
) (SSL
*ssl
, int type
,
3934 size_t len
, void *arg
))
3936 ssl
->record_padding_cb
= cb
;
3939 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3941 ssl
->record_padding_arg
= arg
;
3944 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3946 return ssl
->record_padding_arg
;
3949 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3951 /* block size of 0 or 1 is basically no padding */
3952 if (block_size
== 1)
3953 ssl
->block_padding
= 0;
3954 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3955 ssl
->block_padding
= block_size
;
3962 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3963 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3964 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3965 * Returns the newly allocated ctx;
3968 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3970 ssl_clear_hash_ctx(hash
);
3971 *hash
= EVP_MD_CTX_new();
3972 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3973 EVP_MD_CTX_free(*hash
);
3980 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3983 EVP_MD_CTX_free(*hash
);
3987 /* Retrieve handshake hashes */
3988 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3991 EVP_MD_CTX
*ctx
= NULL
;
3992 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3993 int hashleni
= EVP_MD_CTX_size(hdgst
);
3996 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3999 ctx
= EVP_MD_CTX_new();
4003 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4004 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4007 *hashlen
= hashleni
;
4011 EVP_MD_CTX_free(ctx
);
4015 int SSL_session_reused(SSL
*s
)
4020 int SSL_is_server(const SSL
*s
)
4025 #if OPENSSL_API_COMPAT < 0x10100000L
4026 void SSL_set_debug(SSL
*s
, int debug
)
4028 /* Old function was do-nothing anyway... */
4034 void SSL_set_security_level(SSL
*s
, int level
)
4036 s
->cert
->sec_level
= level
;
4039 int SSL_get_security_level(const SSL
*s
)
4041 return s
->cert
->sec_level
;
4044 void SSL_set_security_callback(SSL
*s
,
4045 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4046 int op
, int bits
, int nid
,
4047 void *other
, void *ex
))
4049 s
->cert
->sec_cb
= cb
;
4052 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4053 const SSL_CTX
*ctx
, int op
,
4054 int bits
, int nid
, void *other
,
4056 return s
->cert
->sec_cb
;
4059 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4061 s
->cert
->sec_ex
= ex
;
4064 void *SSL_get0_security_ex_data(const SSL
*s
)
4066 return s
->cert
->sec_ex
;
4069 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4071 ctx
->cert
->sec_level
= level
;
4074 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4076 return ctx
->cert
->sec_level
;
4079 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4080 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4081 int op
, int bits
, int nid
,
4082 void *other
, void *ex
))
4084 ctx
->cert
->sec_cb
= cb
;
4087 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4093 return ctx
->cert
->sec_cb
;
4096 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4098 ctx
->cert
->sec_ex
= ex
;
4101 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4103 return ctx
->cert
->sec_ex
;
4107 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4108 * can return unsigned long, instead of the generic long return value from the
4109 * control interface.
4111 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4113 return ctx
->options
;
4116 unsigned long SSL_get_options(const SSL
*s
)
4121 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4123 return ctx
->options
|= op
;
4126 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4128 return s
->options
|= op
;
4131 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4133 return ctx
->options
&= ~op
;
4136 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4138 return s
->options
&= ~op
;
4141 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4143 return s
->verified_chain
;
4146 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4148 #ifndef OPENSSL_NO_CT
4151 * Moves SCTs from the |src| stack to the |dst| stack.
4152 * The source of each SCT will be set to |origin|.
4153 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4155 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4157 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4158 sct_source_t origin
)
4164 *dst
= sk_SCT_new_null();
4166 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4171 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4172 if (SCT_set_source(sct
, origin
) != 1)
4175 if (sk_SCT_push(*dst
, sct
) <= 0)
4183 sk_SCT_push(src
, sct
); /* Put the SCT back */
4188 * Look for data collected during ServerHello and parse if found.
4189 * Returns the number of SCTs extracted.
4191 static int ct_extract_tls_extension_scts(SSL
*s
)
4193 int scts_extracted
= 0;
4195 if (s
->ext
.scts
!= NULL
) {
4196 const unsigned char *p
= s
->ext
.scts
;
4197 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4199 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4201 SCT_LIST_free(scts
);
4204 return scts_extracted
;
4208 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4209 * contains an SCT X509 extension. They will be stored in |s->scts|.
4211 * - The number of SCTs extracted, assuming an OCSP response exists.
4212 * - 0 if no OCSP response exists or it contains no SCTs.
4213 * - A negative integer if an error occurs.
4215 static int ct_extract_ocsp_response_scts(SSL
*s
)
4217 # ifndef OPENSSL_NO_OCSP
4218 int scts_extracted
= 0;
4219 const unsigned char *p
;
4220 OCSP_BASICRESP
*br
= NULL
;
4221 OCSP_RESPONSE
*rsp
= NULL
;
4222 STACK_OF(SCT
) *scts
= NULL
;
4225 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4228 p
= s
->ext
.ocsp
.resp
;
4229 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4233 br
= OCSP_response_get1_basic(rsp
);
4237 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4238 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4244 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4246 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4247 if (scts_extracted
< 0)
4251 SCT_LIST_free(scts
);
4252 OCSP_BASICRESP_free(br
);
4253 OCSP_RESPONSE_free(rsp
);
4254 return scts_extracted
;
4256 /* Behave as if no OCSP response exists */
4262 * Attempts to extract SCTs from the peer certificate.
4263 * Return the number of SCTs extracted, or a negative integer if an error
4266 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4268 int scts_extracted
= 0;
4269 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4272 STACK_OF(SCT
) *scts
=
4273 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4276 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4278 SCT_LIST_free(scts
);
4281 return scts_extracted
;
4285 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4286 * response (if it exists) and X509v3 extensions in the certificate.
4287 * Returns NULL if an error occurs.
4289 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4291 if (!s
->scts_parsed
) {
4292 if (ct_extract_tls_extension_scts(s
) < 0 ||
4293 ct_extract_ocsp_response_scts(s
) < 0 ||
4294 ct_extract_x509v3_extension_scts(s
) < 0)
4304 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4305 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4310 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4311 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4313 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4316 for (i
= 0; i
< count
; ++i
) {
4317 SCT
*sct
= sk_SCT_value(scts
, i
);
4318 int status
= SCT_get_validation_status(sct
);
4320 if (status
== SCT_VALIDATION_STATUS_VALID
)
4323 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4327 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4331 * Since code exists that uses the custom extension handler for CT, look
4332 * for this and throw an error if they have already registered to use CT.
4334 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4335 TLSEXT_TYPE_signed_certificate_timestamp
))
4337 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4338 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4342 if (callback
!= NULL
) {
4344 * If we are validating CT, then we MUST accept SCTs served via OCSP
4346 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4350 s
->ct_validation_callback
= callback
;
4351 s
->ct_validation_callback_arg
= arg
;
4356 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4357 ssl_ct_validation_cb callback
, void *arg
)
4360 * Since code exists that uses the custom extension handler for CT, look for
4361 * this and throw an error if they have already registered to use CT.
4363 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4364 TLSEXT_TYPE_signed_certificate_timestamp
))
4366 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4367 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4371 ctx
->ct_validation_callback
= callback
;
4372 ctx
->ct_validation_callback_arg
= arg
;
4376 int SSL_ct_is_enabled(const SSL
*s
)
4378 return s
->ct_validation_callback
!= NULL
;
4381 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4383 return ctx
->ct_validation_callback
!= NULL
;
4386 int ssl_validate_ct(SSL
*s
)
4389 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4391 SSL_DANE
*dane
= &s
->dane
;
4392 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4393 const STACK_OF(SCT
) *scts
;
4396 * If no callback is set, the peer is anonymous, or its chain is invalid,
4397 * skip SCT validation - just return success. Applications that continue
4398 * handshakes without certificates, with unverified chains, or pinned leaf
4399 * certificates are outside the scope of the WebPKI and CT.
4401 * The above exclusions notwithstanding the vast majority of peers will
4402 * have rather ordinary certificate chains validated by typical
4403 * applications that perform certificate verification and therefore will
4404 * process SCTs when enabled.
4406 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4407 s
->verify_result
!= X509_V_OK
||
4408 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4412 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4413 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4415 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4416 switch (dane
->mtlsa
->usage
) {
4417 case DANETLS_USAGE_DANE_TA
:
4418 case DANETLS_USAGE_DANE_EE
:
4423 ctx
= CT_POLICY_EVAL_CTX_new();
4425 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4429 issuer
= sk_X509_value(s
->verified_chain
, 1);
4430 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4431 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4432 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4433 CT_POLICY_EVAL_CTX_set_time(
4434 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4436 scts
= SSL_get0_peer_scts(s
);
4439 * This function returns success (> 0) only when all the SCTs are valid, 0
4440 * when some are invalid, and < 0 on various internal errors (out of
4441 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4442 * reason to abort the handshake, that decision is up to the callback.
4443 * Therefore, we error out only in the unexpected case that the return
4444 * value is negative.
4446 * XXX: One might well argue that the return value of this function is an
4447 * unfortunate design choice. Its job is only to determine the validation
4448 * status of each of the provided SCTs. So long as it correctly separates
4449 * the wheat from the chaff it should return success. Failure in this case
4450 * ought to correspond to an inability to carry out its duties.
4452 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4453 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4457 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4459 ret
= 0; /* This function returns 0 on failure */
4462 CT_POLICY_EVAL_CTX_free(ctx
);
4464 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4465 * failure return code here. Also the application may wish the complete
4466 * the handshake, and then disconnect cleanly at a higher layer, after
4467 * checking the verification status of the completed connection.
4469 * We therefore force a certificate verification failure which will be
4470 * visible via SSL_get_verify_result() and cached as part of any resumed
4473 * Note: the permissive callback is for information gathering only, always
4474 * returns success, and does not affect verification status. Only the
4475 * strict callback or a custom application-specified callback can trigger
4476 * connection failure or record a verification error.
4479 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4483 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4485 switch (validation_mode
) {
4487 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4489 case SSL_CT_VALIDATION_PERMISSIVE
:
4490 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4491 case SSL_CT_VALIDATION_STRICT
:
4492 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4496 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4498 switch (validation_mode
) {
4500 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4502 case SSL_CT_VALIDATION_PERMISSIVE
:
4503 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4504 case SSL_CT_VALIDATION_STRICT
:
4505 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4509 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4511 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4514 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4516 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4519 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4521 CTLOG_STORE_free(ctx
->ctlog_store
);
4522 ctx
->ctlog_store
= logs
;
4525 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4527 return ctx
->ctlog_store
;
4530 #endif /* OPENSSL_NO_CT */
4532 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4535 c
->early_cb_arg
= arg
;
4538 int SSL_early_isv2(SSL
*s
)
4540 if (s
->clienthello
== NULL
)
4542 return s
->clienthello
->isv2
;
4545 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4547 if (s
->clienthello
== NULL
)
4549 return s
->clienthello
->legacy_version
;
4552 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4554 if (s
->clienthello
== NULL
)
4557 *out
= s
->clienthello
->random
;
4558 return SSL3_RANDOM_SIZE
;
4561 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4563 if (s
->clienthello
== NULL
)
4566 *out
= s
->clienthello
->session_id
;
4567 return s
->clienthello
->session_id_len
;
4570 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4572 if (s
->clienthello
== NULL
)
4575 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4576 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4579 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4581 if (s
->clienthello
== NULL
)
4584 *out
= s
->clienthello
->compressions
;
4585 return s
->clienthello
->compressions_len
;
4588 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4594 if (s
->clienthello
== NULL
)
4596 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4597 r
= s
->clienthello
->pre_proc_exts
+ i
;
4598 if (r
->present
&& r
->type
== type
) {
4600 *out
= PACKET_data(&r
->data
);
4602 *outlen
= PACKET_remaining(&r
->data
);
4609 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4611 ctx
->keylog_callback
= cb
;
4614 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4616 return ctx
->keylog_callback
;
4619 static int nss_keylog_int(const char *prefix
,
4621 const uint8_t *parameter_1
,
4622 size_t parameter_1_len
,
4623 const uint8_t *parameter_2
,
4624 size_t parameter_2_len
)
4627 char *cursor
= NULL
;
4632 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4635 * Our output buffer will contain the following strings, rendered with
4636 * space characters in between, terminated by a NULL character: first the
4637 * prefix, then the first parameter, then the second parameter. The
4638 * meaning of each parameter depends on the specific key material being
4639 * logged. Note that the first and second parameters are encoded in
4640 * hexadecimal, so we need a buffer that is twice their lengths.
4642 prefix_len
= strlen(prefix
);
4643 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4644 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4645 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4649 strcpy(cursor
, prefix
);
4650 cursor
+= prefix_len
;
4653 for (i
= 0; i
< parameter_1_len
; i
++) {
4654 sprintf(cursor
, "%02x", parameter_1
[i
]);
4659 for (i
= 0; i
< parameter_2_len
; i
++) {
4660 sprintf(cursor
, "%02x", parameter_2
[i
]);
4665 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4671 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4672 const uint8_t *encrypted_premaster
,
4673 size_t encrypted_premaster_len
,
4674 const uint8_t *premaster
,
4675 size_t premaster_len
)
4677 if (encrypted_premaster_len
< 8) {
4678 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4682 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4683 return nss_keylog_int("RSA",
4685 encrypted_premaster
,
4691 int ssl_log_secret(SSL
*ssl
,
4693 const uint8_t *secret
,
4696 return nss_keylog_int(label
,
4698 ssl
->s3
->client_random
,
4704 #define SSLV2_CIPHER_LEN 3
4706 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4711 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4713 if (PACKET_remaining(cipher_suites
) == 0) {
4714 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4715 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4719 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4720 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4721 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4722 *al
= SSL_AD_DECODE_ERROR
;
4726 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4727 s
->s3
->tmp
.ciphers_raw
= NULL
;
4728 s
->s3
->tmp
.ciphers_rawlen
= 0;
4731 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4732 PACKET sslv2ciphers
= *cipher_suites
;
4733 unsigned int leadbyte
;
4737 * We store the raw ciphers list in SSLv3+ format so we need to do some
4738 * preprocessing to convert the list first. If there are any SSLv2 only
4739 * ciphersuites with a non-zero leading byte then we are going to
4740 * slightly over allocate because we won't store those. But that isn't a
4743 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4744 s
->s3
->tmp
.ciphers_raw
= raw
;
4746 *al
= SSL_AD_INTERNAL_ERROR
;
4749 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4750 PACKET_remaining(&sslv2ciphers
) > 0;
4751 raw
+= TLS_CIPHER_LEN
) {
4752 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4754 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4757 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4758 *al
= SSL_AD_DECODE_ERROR
;
4759 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4760 s
->s3
->tmp
.ciphers_raw
= NULL
;
4761 s
->s3
->tmp
.ciphers_rawlen
= 0;
4765 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4767 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4768 &s
->s3
->tmp
.ciphers_rawlen
)) {
4769 *al
= SSL_AD_INTERNAL_ERROR
;
4777 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4778 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4779 STACK_OF(SSL_CIPHER
) **scsvs
)
4784 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4786 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4789 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4790 STACK_OF(SSL_CIPHER
) **skp
,
4791 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4792 int sslv2format
, int *al
)
4794 const SSL_CIPHER
*c
;
4795 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4796 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4798 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4799 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4801 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4803 if (PACKET_remaining(cipher_suites
) == 0) {
4804 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4805 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4809 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4810 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4811 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4812 *al
= SSL_AD_DECODE_ERROR
;
4816 sk
= sk_SSL_CIPHER_new_null();
4817 scsvs
= sk_SSL_CIPHER_new_null();
4818 if (sk
== NULL
|| scsvs
== NULL
) {
4819 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4820 *al
= SSL_AD_INTERNAL_ERROR
;
4824 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4826 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4827 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4828 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4830 if (sslv2format
&& cipher
[0] != '\0')
4833 /* For SSLv2-compat, ignore leading 0-byte. */
4834 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4836 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4837 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4838 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4839 *al
= SSL_AD_INTERNAL_ERROR
;
4844 if (PACKET_remaining(cipher_suites
) > 0) {
4845 *al
= SSL_AD_DECODE_ERROR
;
4846 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
4853 sk_SSL_CIPHER_free(sk
);
4854 if (scsvs_out
!= NULL
)
4857 sk_SSL_CIPHER_free(scsvs
);
4860 sk_SSL_CIPHER_free(sk
);
4861 sk_SSL_CIPHER_free(scsvs
);
4865 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4867 ctx
->max_early_data
= max_early_data
;
4872 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4874 return ctx
->max_early_data
;
4877 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4879 s
->max_early_data
= max_early_data
;
4884 uint32_t SSL_get_max_early_data(const SSL
*s
)
4886 return s
->max_early_data
;