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 OPENSSL_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
);
579 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
580 s
->verify_callback
= ctx
->default_verify_callback
;
581 s
->generate_session_id
= ctx
->generate_session_id
;
583 s
->param
= X509_VERIFY_PARAM_new();
584 if (s
->param
== NULL
)
586 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
587 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
588 s
->max_send_fragment
= ctx
->max_send_fragment
;
589 s
->split_send_fragment
= ctx
->split_send_fragment
;
590 s
->max_pipelines
= ctx
->max_pipelines
;
591 if (s
->max_pipelines
> 1)
592 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
593 if (ctx
->default_read_buf_len
> 0)
594 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
599 s
->ext
.debug_arg
= NULL
;
600 s
->ext
.ticket_expected
= 0;
601 s
->ext
.status_type
= ctx
->ext
.status_type
;
602 s
->ext
.status_expected
= 0;
603 s
->ext
.ocsp
.ids
= NULL
;
604 s
->ext
.ocsp
.exts
= NULL
;
605 s
->ext
.ocsp
.resp
= NULL
;
606 s
->ext
.ocsp
.resp_len
= 0;
608 s
->session_ctx
= ctx
;
609 #ifndef OPENSSL_NO_EC
610 if (ctx
->ext
.ecpointformats
) {
611 s
->ext
.ecpointformats
=
612 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
613 ctx
->ext
.ecpointformats_len
);
614 if (!s
->ext
.ecpointformats
)
616 s
->ext
.ecpointformats_len
=
617 ctx
->ext
.ecpointformats_len
;
619 if (ctx
->ext
.supportedgroups
) {
620 s
->ext
.supportedgroups
=
621 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
622 ctx
->ext
.supportedgroups_len
);
623 if (!s
->ext
.supportedgroups
)
625 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
628 #ifndef OPENSSL_NO_NEXTPROTONEG
632 if (s
->ctx
->ext
.alpn
) {
633 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
634 if (s
->ext
.alpn
== NULL
)
636 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
637 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
640 s
->verified_chain
= NULL
;
641 s
->verify_result
= X509_V_OK
;
643 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
644 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
646 s
->method
= ctx
->method
;
648 s
->key_update
= SSL_KEY_UPDATE_NONE
;
650 if (!s
->method
->ssl_new(s
))
653 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
658 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
661 #ifndef OPENSSL_NO_PSK
662 s
->psk_client_callback
= ctx
->psk_client_callback
;
663 s
->psk_server_callback
= ctx
->psk_server_callback
;
668 #ifndef OPENSSL_NO_CT
669 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
670 ctx
->ct_validation_callback_arg
))
677 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
681 int SSL_is_dtls(const SSL
*s
)
683 return SSL_IS_DTLS(s
) ? 1 : 0;
686 int SSL_up_ref(SSL
*s
)
690 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
693 REF_PRINT_COUNT("SSL", s
);
694 REF_ASSERT_ISNT(i
< 2);
695 return ((i
> 1) ? 1 : 0);
698 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
699 unsigned int sid_ctx_len
)
701 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
702 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
703 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
706 ctx
->sid_ctx_length
= sid_ctx_len
;
707 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
712 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
713 unsigned int sid_ctx_len
)
715 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
716 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
717 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
720 ssl
->sid_ctx_length
= sid_ctx_len
;
721 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
726 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
728 CRYPTO_THREAD_write_lock(ctx
->lock
);
729 ctx
->generate_session_id
= cb
;
730 CRYPTO_THREAD_unlock(ctx
->lock
);
734 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
736 CRYPTO_THREAD_write_lock(ssl
->lock
);
737 ssl
->generate_session_id
= cb
;
738 CRYPTO_THREAD_unlock(ssl
->lock
);
742 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
746 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
747 * we can "construct" a session to give us the desired check - i.e. to
748 * find if there's a session in the hash table that would conflict with
749 * any new session built out of this id/id_len and the ssl_version in use
754 if (id_len
> sizeof r
.session_id
)
757 r
.ssl_version
= ssl
->version
;
758 r
.session_id_length
= id_len
;
759 memcpy(r
.session_id
, id
, id_len
);
761 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
762 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
763 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
767 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
769 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
772 int SSL_set_purpose(SSL
*s
, int purpose
)
774 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
777 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
779 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
782 int SSL_set_trust(SSL
*s
, int trust
)
784 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
787 int SSL_set1_host(SSL
*s
, const char *hostname
)
789 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
792 int SSL_add1_host(SSL
*s
, const char *hostname
)
794 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
797 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
799 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
802 const char *SSL_get0_peername(SSL
*s
)
804 return X509_VERIFY_PARAM_get0_peername(s
->param
);
807 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
809 return dane_ctx_enable(&ctx
->dane
);
812 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
814 unsigned long orig
= ctx
->dane
.flags
;
816 ctx
->dane
.flags
|= flags
;
820 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
822 unsigned long orig
= ctx
->dane
.flags
;
824 ctx
->dane
.flags
&= ~flags
;
828 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
830 SSL_DANE
*dane
= &s
->dane
;
832 if (s
->ctx
->dane
.mdmax
== 0) {
833 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
836 if (dane
->trecs
!= NULL
) {
837 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
842 * Default SNI name. This rejects empty names, while set1_host below
843 * accepts them and disables host name checks. To avoid side-effects with
844 * invalid input, set the SNI name first.
846 if (s
->ext
.hostname
== NULL
) {
847 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
848 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
853 /* Primary RFC6125 reference identifier */
854 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
855 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
861 dane
->dctx
= &s
->ctx
->dane
;
862 dane
->trecs
= sk_danetls_record_new_null();
864 if (dane
->trecs
== NULL
) {
865 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
871 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
873 unsigned long orig
= ssl
->dane
.flags
;
875 ssl
->dane
.flags
|= flags
;
879 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
881 unsigned long orig
= ssl
->dane
.flags
;
883 ssl
->dane
.flags
&= ~flags
;
887 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
889 SSL_DANE
*dane
= &s
->dane
;
891 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
895 *mcert
= dane
->mcert
;
897 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
902 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
903 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
905 SSL_DANE
*dane
= &s
->dane
;
907 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
911 *usage
= dane
->mtlsa
->usage
;
913 *selector
= dane
->mtlsa
->selector
;
915 *mtype
= dane
->mtlsa
->mtype
;
917 *data
= dane
->mtlsa
->data
;
919 *dlen
= dane
->mtlsa
->dlen
;
924 SSL_DANE
*SSL_get0_dane(SSL
*s
)
929 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
930 uint8_t mtype
, unsigned char *data
, size_t dlen
)
932 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
935 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
938 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
941 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
943 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
946 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
948 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
951 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
956 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
961 void SSL_certs_clear(SSL
*s
)
963 ssl_cert_clear_certs(s
->cert
);
966 void SSL_free(SSL
*s
)
973 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
974 REF_PRINT_COUNT("SSL", s
);
977 REF_ASSERT_ISNT(i
< 0);
979 X509_VERIFY_PARAM_free(s
->param
);
980 dane_final(&s
->dane
);
981 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
983 ssl_free_wbio_buffer(s
);
985 BIO_free_all(s
->wbio
);
986 BIO_free_all(s
->rbio
);
988 BUF_MEM_free(s
->init_buf
);
990 /* add extra stuff */
991 sk_SSL_CIPHER_free(s
->cipher_list
);
992 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
994 /* Make the next call work :-) */
995 if (s
->session
!= NULL
) {
996 ssl_clear_bad_session(s
);
997 SSL_SESSION_free(s
->session
);
1002 ssl_cert_free(s
->cert
);
1003 /* Free up if allocated */
1005 OPENSSL_free(s
->ext
.hostname
);
1006 SSL_CTX_free(s
->session_ctx
);
1007 #ifndef OPENSSL_NO_EC
1008 OPENSSL_free(s
->ext
.ecpointformats
);
1009 OPENSSL_free(s
->ext
.supportedgroups
);
1010 #endif /* OPENSSL_NO_EC */
1011 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1012 #ifndef OPENSSL_NO_OCSP
1013 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1015 #ifndef OPENSSL_NO_CT
1016 SCT_LIST_free(s
->scts
);
1017 OPENSSL_free(s
->ext
.scts
);
1019 OPENSSL_free(s
->ext
.ocsp
.resp
);
1020 OPENSSL_free(s
->ext
.alpn
);
1021 OPENSSL_free(s
->ext
.tls13_cookie
);
1022 OPENSSL_free(s
->clienthello
);
1024 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1026 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1028 if (s
->method
!= NULL
)
1029 s
->method
->ssl_free(s
);
1031 RECORD_LAYER_release(&s
->rlayer
);
1033 SSL_CTX_free(s
->ctx
);
1035 ASYNC_WAIT_CTX_free(s
->waitctx
);
1037 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1038 OPENSSL_free(s
->ext
.npn
);
1041 #ifndef OPENSSL_NO_SRTP
1042 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1045 CRYPTO_THREAD_lock_free(s
->lock
);
1050 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1052 BIO_free_all(s
->rbio
);
1056 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1059 * If the output buffering BIO is still in place, remove it
1061 if (s
->bbio
!= NULL
)
1062 s
->wbio
= BIO_pop(s
->wbio
);
1064 BIO_free_all(s
->wbio
);
1067 /* Re-attach |bbio| to the new |wbio|. */
1068 if (s
->bbio
!= NULL
)
1069 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1072 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1075 * For historical reasons, this function has many different cases in
1076 * ownership handling.
1079 /* If nothing has changed, do nothing */
1080 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1084 * If the two arguments are equal then one fewer reference is granted by the
1085 * caller than we want to take
1087 if (rbio
!= NULL
&& rbio
== wbio
)
1091 * If only the wbio is changed only adopt one reference.
1093 if (rbio
== SSL_get_rbio(s
)) {
1094 SSL_set0_wbio(s
, wbio
);
1098 * There is an asymmetry here for historical reasons. If only the rbio is
1099 * changed AND the rbio and wbio were originally different, then we only
1100 * adopt one reference.
1102 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1103 SSL_set0_rbio(s
, rbio
);
1107 /* Otherwise, adopt both references. */
1108 SSL_set0_rbio(s
, rbio
);
1109 SSL_set0_wbio(s
, wbio
);
1112 BIO
*SSL_get_rbio(const SSL
*s
)
1117 BIO
*SSL_get_wbio(const SSL
*s
)
1119 if (s
->bbio
!= NULL
) {
1121 * If |bbio| is active, the true caller-configured BIO is its
1124 return BIO_next(s
->bbio
);
1129 int SSL_get_fd(const SSL
*s
)
1131 return SSL_get_rfd(s
);
1134 int SSL_get_rfd(const SSL
*s
)
1139 b
= SSL_get_rbio(s
);
1140 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1142 BIO_get_fd(r
, &ret
);
1146 int SSL_get_wfd(const SSL
*s
)
1151 b
= SSL_get_wbio(s
);
1152 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1154 BIO_get_fd(r
, &ret
);
1158 #ifndef OPENSSL_NO_SOCK
1159 int SSL_set_fd(SSL
*s
, int fd
)
1164 bio
= BIO_new(BIO_s_socket());
1167 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1170 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1171 SSL_set_bio(s
, bio
, bio
);
1177 int SSL_set_wfd(SSL
*s
, int fd
)
1179 BIO
*rbio
= SSL_get_rbio(s
);
1181 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1182 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1183 BIO
*bio
= BIO_new(BIO_s_socket());
1186 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1189 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1190 SSL_set0_wbio(s
, bio
);
1193 SSL_set0_wbio(s
, rbio
);
1198 int SSL_set_rfd(SSL
*s
, int fd
)
1200 BIO
*wbio
= SSL_get_wbio(s
);
1202 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1203 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1204 BIO
*bio
= BIO_new(BIO_s_socket());
1207 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1210 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1211 SSL_set0_rbio(s
, bio
);
1214 SSL_set0_rbio(s
, wbio
);
1221 /* return length of latest Finished message we sent, copy to 'buf' */
1222 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1226 if (s
->s3
!= NULL
) {
1227 ret
= s
->s3
->tmp
.finish_md_len
;
1230 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1235 /* return length of latest Finished message we expected, copy to 'buf' */
1236 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1240 if (s
->s3
!= NULL
) {
1241 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1244 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1249 int SSL_get_verify_mode(const SSL
*s
)
1251 return (s
->verify_mode
);
1254 int SSL_get_verify_depth(const SSL
*s
)
1256 return X509_VERIFY_PARAM_get_depth(s
->param
);
1259 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1260 return (s
->verify_callback
);
1263 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1265 return (ctx
->verify_mode
);
1268 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1270 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1273 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1274 return (ctx
->default_verify_callback
);
1277 void SSL_set_verify(SSL
*s
, int mode
,
1278 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1280 s
->verify_mode
= mode
;
1281 if (callback
!= NULL
)
1282 s
->verify_callback
= callback
;
1285 void SSL_set_verify_depth(SSL
*s
, int depth
)
1287 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1290 void SSL_set_read_ahead(SSL
*s
, int yes
)
1292 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1295 int SSL_get_read_ahead(const SSL
*s
)
1297 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1300 int SSL_pending(const SSL
*s
)
1302 size_t pending
= s
->method
->ssl_pending(s
);
1305 * SSL_pending cannot work properly if read-ahead is enabled
1306 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1307 * impossible to fix since SSL_pending cannot report errors that may be
1308 * observed while scanning the new data. (Note that SSL_pending() is
1309 * often used as a boolean value, so we'd better not return -1.)
1311 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1312 * we just return INT_MAX.
1314 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1317 int SSL_has_pending(const SSL
*s
)
1320 * Similar to SSL_pending() but returns a 1 to indicate that we have
1321 * unprocessed data available or 0 otherwise (as opposed to the number of
1322 * bytes available). Unlike SSL_pending() this will take into account
1323 * read_ahead data. A 1 return simply indicates that we have unprocessed
1324 * data. That data may not result in any application data, or we may fail
1325 * to parse the records for some reason.
1327 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1330 return RECORD_LAYER_read_pending(&s
->rlayer
);
1333 X509
*SSL_get_peer_certificate(const SSL
*s
)
1337 if ((s
== NULL
) || (s
->session
== NULL
))
1340 r
= s
->session
->peer
;
1350 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1354 if ((s
== NULL
) || (s
->session
== NULL
))
1357 r
= s
->session
->peer_chain
;
1360 * If we are a client, cert_chain includes the peer's own certificate; if
1361 * we are a server, it does not.
1368 * Now in theory, since the calling process own 't' it should be safe to
1369 * modify. We need to be able to read f without being hassled
1371 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1374 /* Do we need to to SSL locking? */
1375 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1380 * what if we are setup for one protocol version but want to talk another
1382 if (t
->method
!= f
->method
) {
1383 t
->method
->ssl_free(t
);
1384 t
->method
= f
->method
;
1385 if (t
->method
->ssl_new(t
) == 0)
1389 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1390 ssl_cert_free(t
->cert
);
1392 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1399 /* Fix this so it checks all the valid key/cert options */
1400 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1402 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1403 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1406 if (ctx
->cert
->key
->privatekey
== NULL
) {
1407 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1410 return (X509_check_private_key
1411 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1414 /* Fix this function so that it takes an optional type parameter */
1415 int SSL_check_private_key(const SSL
*ssl
)
1418 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1421 if (ssl
->cert
->key
->x509
== NULL
) {
1422 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1425 if (ssl
->cert
->key
->privatekey
== NULL
) {
1426 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1429 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1430 ssl
->cert
->key
->privatekey
));
1433 int SSL_waiting_for_async(SSL
*s
)
1441 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1443 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1447 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1450 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1451 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1453 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1457 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1461 int SSL_accept(SSL
*s
)
1463 if (s
->handshake_func
== NULL
) {
1464 /* Not properly initialized yet */
1465 SSL_set_accept_state(s
);
1468 return SSL_do_handshake(s
);
1471 int SSL_connect(SSL
*s
)
1473 if (s
->handshake_func
== NULL
) {
1474 /* Not properly initialized yet */
1475 SSL_set_connect_state(s
);
1478 return SSL_do_handshake(s
);
1481 long SSL_get_default_timeout(const SSL
*s
)
1483 return (s
->method
->get_timeout());
1486 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1487 int (*func
) (void *))
1490 if (s
->waitctx
== NULL
) {
1491 s
->waitctx
= ASYNC_WAIT_CTX_new();
1492 if (s
->waitctx
== NULL
)
1495 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1496 sizeof(struct ssl_async_args
))) {
1498 s
->rwstate
= SSL_NOTHING
;
1499 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1502 s
->rwstate
= SSL_ASYNC_PAUSED
;
1505 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1511 s
->rwstate
= SSL_NOTHING
;
1512 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1513 /* Shouldn't happen */
1518 static int ssl_io_intern(void *vargs
)
1520 struct ssl_async_args
*args
;
1525 args
= (struct ssl_async_args
*)vargs
;
1529 switch (args
->type
) {
1531 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1533 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1535 return args
->f
.func_other(s
);
1540 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1542 if (s
->handshake_func
== NULL
) {
1543 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1547 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1548 s
->rwstate
= SSL_NOTHING
;
1552 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1553 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1554 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1558 * If we are a client and haven't received the ServerHello etc then we
1561 ossl_statem_check_finish_init(s
, 0);
1563 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1564 struct ssl_async_args args
;
1570 args
.type
= READFUNC
;
1571 args
.f
.func_read
= s
->method
->ssl_read
;
1573 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1574 *readbytes
= s
->asyncrw
;
1577 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1581 int SSL_read(SSL
*s
, void *buf
, int num
)
1587 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1591 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1594 * The cast is safe here because ret should be <= INT_MAX because num is
1598 ret
= (int)readbytes
;
1603 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1605 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1612 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1617 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1618 return SSL_READ_EARLY_DATA_ERROR
;
1621 switch (s
->early_data_state
) {
1622 case SSL_EARLY_DATA_NONE
:
1623 if (!SSL_in_before(s
)) {
1624 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1625 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1626 return SSL_READ_EARLY_DATA_ERROR
;
1630 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1631 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1632 ret
= SSL_accept(s
);
1635 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1636 return SSL_READ_EARLY_DATA_ERROR
;
1640 case SSL_EARLY_DATA_READ_RETRY
:
1641 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1642 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1643 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1645 * State machine will update early_data_state to
1646 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1649 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1650 != SSL_EARLY_DATA_FINISHED_READING
)) {
1651 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1652 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1653 : SSL_READ_EARLY_DATA_ERROR
;
1656 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1659 return SSL_READ_EARLY_DATA_FINISH
;
1662 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1663 return SSL_READ_EARLY_DATA_ERROR
;
1667 int SSL_get_early_data_status(const SSL
*s
)
1669 return s
->ext
.early_data
;
1672 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1674 if (s
->handshake_func
== NULL
) {
1675 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1679 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1682 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1683 struct ssl_async_args args
;
1689 args
.type
= READFUNC
;
1690 args
.f
.func_read
= s
->method
->ssl_peek
;
1692 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1693 *readbytes
= s
->asyncrw
;
1696 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1700 int SSL_peek(SSL
*s
, void *buf
, int num
)
1706 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1710 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1713 * The cast is safe here because ret should be <= INT_MAX because num is
1717 ret
= (int)readbytes
;
1723 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1725 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1732 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1734 if (s
->handshake_func
== NULL
) {
1735 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1739 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1740 s
->rwstate
= SSL_NOTHING
;
1741 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1745 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1746 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1747 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1748 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1751 /* If we are a client and haven't sent the Finished we better do that */
1752 ossl_statem_check_finish_init(s
, 1);
1754 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1756 struct ssl_async_args args
;
1759 args
.buf
= (void *)buf
;
1761 args
.type
= WRITEFUNC
;
1762 args
.f
.func_write
= s
->method
->ssl_write
;
1764 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1765 *written
= s
->asyncrw
;
1768 return s
->method
->ssl_write(s
, buf
, num
, written
);
1772 int SSL_write(SSL
*s
, const void *buf
, int num
)
1778 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1782 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1785 * The cast is safe here because ret should be <= INT_MAX because num is
1794 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1796 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1803 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1805 int ret
, early_data_state
;
1807 switch (s
->early_data_state
) {
1808 case SSL_EARLY_DATA_NONE
:
1810 || !SSL_in_before(s
)
1811 || s
->session
== NULL
1812 || s
->session
->ext
.max_early_data
== 0) {
1813 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1814 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1819 case SSL_EARLY_DATA_CONNECT_RETRY
:
1820 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1821 ret
= SSL_connect(s
);
1824 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1829 case SSL_EARLY_DATA_WRITE_RETRY
:
1830 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1831 ret
= SSL_write_ex(s
, buf
, num
, written
);
1832 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1835 case SSL_EARLY_DATA_FINISHED_READING
:
1836 case SSL_EARLY_DATA_READ_RETRY
:
1837 early_data_state
= s
->early_data_state
;
1838 /* We are a server writing to an unauthenticated client */
1839 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1840 ret
= SSL_write_ex(s
, buf
, num
, written
);
1841 s
->early_data_state
= early_data_state
;
1845 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1850 int SSL_shutdown(SSL
*s
)
1853 * Note that this function behaves differently from what one might
1854 * expect. Return values are 0 for no success (yet), 1 for success; but
1855 * calling it once is usually not enough, even if blocking I/O is used
1856 * (see ssl3_shutdown).
1859 if (s
->handshake_func
== NULL
) {
1860 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1864 if (!SSL_in_init(s
)) {
1865 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1866 struct ssl_async_args args
;
1869 args
.type
= OTHERFUNC
;
1870 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1872 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1874 return s
->method
->ssl_shutdown(s
);
1877 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1882 int SSL_key_update(SSL
*s
, int updatetype
)
1885 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1886 * negotiated, and that it is appropriate to call SSL_key_update() instead
1887 * of SSL_renegotiate().
1889 if (!SSL_IS_TLS13(s
)) {
1890 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1894 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1895 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1896 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1900 if (!SSL_is_init_finished(s
)) {
1901 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1905 ossl_statem_set_in_init(s
, 1);
1906 s
->key_update
= updatetype
;
1910 int SSL_get_key_update_type(SSL
*s
)
1912 return s
->key_update
;
1915 int SSL_renegotiate(SSL
*s
)
1917 if (SSL_IS_TLS13(s
)) {
1918 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1922 if (s
->renegotiate
== 0)
1927 return (s
->method
->ssl_renegotiate(s
));
1930 int SSL_renegotiate_abbreviated(SSL
*s
)
1932 if (SSL_IS_TLS13(s
))
1935 if (s
->renegotiate
== 0)
1940 return (s
->method
->ssl_renegotiate(s
));
1943 int SSL_renegotiate_pending(SSL
*s
)
1946 * becomes true when negotiation is requested; false again once a
1947 * handshake has finished
1949 return (s
->renegotiate
!= 0);
1952 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1957 case SSL_CTRL_GET_READ_AHEAD
:
1958 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1959 case SSL_CTRL_SET_READ_AHEAD
:
1960 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1961 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1964 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1965 s
->msg_callback_arg
= parg
;
1969 return (s
->mode
|= larg
);
1970 case SSL_CTRL_CLEAR_MODE
:
1971 return (s
->mode
&= ~larg
);
1972 case SSL_CTRL_GET_MAX_CERT_LIST
:
1973 return (long)(s
->max_cert_list
);
1974 case SSL_CTRL_SET_MAX_CERT_LIST
:
1977 l
= (long)s
->max_cert_list
;
1978 s
->max_cert_list
= (size_t)larg
;
1980 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1981 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1983 s
->max_send_fragment
= larg
;
1984 if (s
->max_send_fragment
< s
->split_send_fragment
)
1985 s
->split_send_fragment
= s
->max_send_fragment
;
1987 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1988 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1990 s
->split_send_fragment
= larg
;
1992 case SSL_CTRL_SET_MAX_PIPELINES
:
1993 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1995 s
->max_pipelines
= larg
;
1997 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1999 case SSL_CTRL_GET_RI_SUPPORT
:
2001 return s
->s3
->send_connection_binding
;
2004 case SSL_CTRL_CERT_FLAGS
:
2005 return (s
->cert
->cert_flags
|= larg
);
2006 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2007 return (s
->cert
->cert_flags
&= ~larg
);
2009 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2011 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2013 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2014 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2016 return TLS_CIPHER_LEN
;
2018 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2019 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2021 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2025 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2026 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2027 &s
->min_proto_version
);
2028 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2029 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2030 &s
->max_proto_version
);
2032 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2036 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2039 case SSL_CTRL_SET_MSG_CALLBACK
:
2040 s
->msg_callback
= (void (*)
2041 (int write_p
, int version
, int content_type
,
2042 const void *buf
, size_t len
, SSL
*ssl
,
2047 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2051 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2053 return ctx
->sessions
;
2056 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2059 /* For some cases with ctx == NULL perform syntax checks */
2062 #ifndef OPENSSL_NO_EC
2063 case SSL_CTRL_SET_GROUPS_LIST
:
2064 return tls1_set_groups_list(NULL
, NULL
, parg
);
2066 case SSL_CTRL_SET_SIGALGS_LIST
:
2067 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2068 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2075 case SSL_CTRL_GET_READ_AHEAD
:
2076 return (ctx
->read_ahead
);
2077 case SSL_CTRL_SET_READ_AHEAD
:
2078 l
= ctx
->read_ahead
;
2079 ctx
->read_ahead
= larg
;
2082 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2083 ctx
->msg_callback_arg
= parg
;
2086 case SSL_CTRL_GET_MAX_CERT_LIST
:
2087 return (long)(ctx
->max_cert_list
);
2088 case SSL_CTRL_SET_MAX_CERT_LIST
:
2091 l
= (long)ctx
->max_cert_list
;
2092 ctx
->max_cert_list
= (size_t)larg
;
2095 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2098 l
= (long)ctx
->session_cache_size
;
2099 ctx
->session_cache_size
= (size_t)larg
;
2101 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2102 return (long)(ctx
->session_cache_size
);
2103 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2104 l
= ctx
->session_cache_mode
;
2105 ctx
->session_cache_mode
= larg
;
2107 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2108 return (ctx
->session_cache_mode
);
2110 case SSL_CTRL_SESS_NUMBER
:
2111 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2112 case SSL_CTRL_SESS_CONNECT
:
2113 return (ctx
->stats
.sess_connect
);
2114 case SSL_CTRL_SESS_CONNECT_GOOD
:
2115 return (ctx
->stats
.sess_connect_good
);
2116 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2117 return (ctx
->stats
.sess_connect_renegotiate
);
2118 case SSL_CTRL_SESS_ACCEPT
:
2119 return (ctx
->stats
.sess_accept
);
2120 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2121 return (ctx
->stats
.sess_accept_good
);
2122 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2123 return (ctx
->stats
.sess_accept_renegotiate
);
2124 case SSL_CTRL_SESS_HIT
:
2125 return (ctx
->stats
.sess_hit
);
2126 case SSL_CTRL_SESS_CB_HIT
:
2127 return (ctx
->stats
.sess_cb_hit
);
2128 case SSL_CTRL_SESS_MISSES
:
2129 return (ctx
->stats
.sess_miss
);
2130 case SSL_CTRL_SESS_TIMEOUTS
:
2131 return (ctx
->stats
.sess_timeout
);
2132 case SSL_CTRL_SESS_CACHE_FULL
:
2133 return (ctx
->stats
.sess_cache_full
);
2135 return (ctx
->mode
|= larg
);
2136 case SSL_CTRL_CLEAR_MODE
:
2137 return (ctx
->mode
&= ~larg
);
2138 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2139 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2141 ctx
->max_send_fragment
= larg
;
2142 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2143 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2145 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2146 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2148 ctx
->split_send_fragment
= larg
;
2150 case SSL_CTRL_SET_MAX_PIPELINES
:
2151 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2153 ctx
->max_pipelines
= larg
;
2155 case SSL_CTRL_CERT_FLAGS
:
2156 return (ctx
->cert
->cert_flags
|= larg
);
2157 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2158 return (ctx
->cert
->cert_flags
&= ~larg
);
2159 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2160 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2161 &ctx
->min_proto_version
);
2162 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2163 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2164 &ctx
->max_proto_version
);
2166 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2170 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2173 case SSL_CTRL_SET_MSG_CALLBACK
:
2174 ctx
->msg_callback
= (void (*)
2175 (int write_p
, int version
, int content_type
,
2176 const void *buf
, size_t len
, SSL
*ssl
,
2181 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2185 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2194 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2195 const SSL_CIPHER
*const *bp
)
2197 if ((*ap
)->id
> (*bp
)->id
)
2199 if ((*ap
)->id
< (*bp
)->id
)
2204 /** return a STACK of the ciphers available for the SSL and in order of
2206 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2209 if (s
->cipher_list
!= NULL
) {
2210 return (s
->cipher_list
);
2211 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2212 return (s
->ctx
->cipher_list
);
2218 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2220 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2222 return s
->session
->ciphers
;
2225 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2227 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2229 ciphers
= SSL_get_ciphers(s
);
2232 ssl_set_client_disabled(s
);
2233 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2234 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2235 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2237 sk
= sk_SSL_CIPHER_new_null();
2240 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2241 sk_SSL_CIPHER_free(sk
);
2249 /** return a STACK of the ciphers available for the SSL and in order of
2251 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2254 if (s
->cipher_list_by_id
!= NULL
) {
2255 return (s
->cipher_list_by_id
);
2256 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2257 return (s
->ctx
->cipher_list_by_id
);
2263 /** The old interface to get the same thing as SSL_get_ciphers() */
2264 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2266 const SSL_CIPHER
*c
;
2267 STACK_OF(SSL_CIPHER
) *sk
;
2271 sk
= SSL_get_ciphers(s
);
2272 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2274 c
= sk_SSL_CIPHER_value(sk
, n
);
2280 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2282 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2285 return ctx
->cipher_list
;
2289 /** specify the ciphers to be used by default by the SSL_CTX */
2290 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2292 STACK_OF(SSL_CIPHER
) *sk
;
2294 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2295 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2297 * ssl_create_cipher_list may return an empty stack if it was unable to
2298 * find a cipher matching the given rule string (for example if the rule
2299 * string specifies a cipher which has been disabled). This is not an
2300 * error as far as ssl_create_cipher_list is concerned, and hence
2301 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2305 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2306 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2312 /** specify the ciphers to be used by the SSL */
2313 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2315 STACK_OF(SSL_CIPHER
) *sk
;
2317 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2318 &s
->cipher_list_by_id
, str
, s
->cert
);
2319 /* see comment in SSL_CTX_set_cipher_list */
2322 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2323 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2329 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2332 STACK_OF(SSL_CIPHER
) *sk
;
2333 const SSL_CIPHER
*c
;
2336 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2340 sk
= s
->session
->ciphers
;
2342 if (sk_SSL_CIPHER_num(sk
) == 0)
2345 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2348 c
= sk_SSL_CIPHER_value(sk
, i
);
2349 n
= strlen(c
->name
);
2356 memcpy(p
, c
->name
, n
+ 1);
2365 /** return a servername extension value if provided in Client Hello, or NULL.
2366 * So far, only host_name types are defined (RFC 3546).
2369 const char *SSL_get_servername(const SSL
*s
, const int type
)
2371 if (type
!= TLSEXT_NAMETYPE_host_name
)
2374 return s
->session
&& !s
->ext
.hostname
?
2375 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2378 int SSL_get_servername_type(const SSL
*s
)
2381 && (!s
->ext
.hostname
? s
->session
->
2382 ext
.hostname
: s
->ext
.hostname
))
2383 return TLSEXT_NAMETYPE_host_name
;
2388 * SSL_select_next_proto implements the standard protocol selection. It is
2389 * expected that this function is called from the callback set by
2390 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2391 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2392 * not included in the length. A byte string of length 0 is invalid. No byte
2393 * string may be truncated. The current, but experimental algorithm for
2394 * selecting the protocol is: 1) If the server doesn't support NPN then this
2395 * is indicated to the callback. In this case, the client application has to
2396 * abort the connection or have a default application level protocol. 2) If
2397 * the server supports NPN, but advertises an empty list then the client
2398 * selects the first protocol in its list, but indicates via the API that this
2399 * fallback case was enacted. 3) Otherwise, the client finds the first
2400 * protocol in the server's list that it supports and selects this protocol.
2401 * This is because it's assumed that the server has better information about
2402 * which protocol a client should use. 4) If the client doesn't support any
2403 * of the server's advertised protocols, then this is treated the same as
2404 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2405 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2407 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2408 const unsigned char *server
,
2409 unsigned int server_len
,
2410 const unsigned char *client
, unsigned int client_len
)
2413 const unsigned char *result
;
2414 int status
= OPENSSL_NPN_UNSUPPORTED
;
2417 * For each protocol in server preference order, see if we support it.
2419 for (i
= 0; i
< server_len
;) {
2420 for (j
= 0; j
< client_len
;) {
2421 if (server
[i
] == client
[j
] &&
2422 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2423 /* We found a match */
2424 result
= &server
[i
];
2425 status
= OPENSSL_NPN_NEGOTIATED
;
2435 /* There's no overlap between our protocols and the server's list. */
2437 status
= OPENSSL_NPN_NO_OVERLAP
;
2440 *out
= (unsigned char *)result
+ 1;
2441 *outlen
= result
[0];
2445 #ifndef OPENSSL_NO_NEXTPROTONEG
2447 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2448 * client's requested protocol for this connection and returns 0. If the
2449 * client didn't request any protocol, then *data is set to NULL. Note that
2450 * the client can request any protocol it chooses. The value returned from
2451 * this function need not be a member of the list of supported protocols
2452 * provided by the callback.
2454 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2461 *len
= (unsigned int)s
->ext
.npn_len
;
2466 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2467 * a TLS server needs a list of supported protocols for Next Protocol
2468 * Negotiation. The returned list must be in wire format. The list is
2469 * returned by setting |out| to point to it and |outlen| to its length. This
2470 * memory will not be modified, but one should assume that the SSL* keeps a
2471 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2472 * wishes to advertise. Otherwise, no such extension will be included in the
2475 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2476 SSL_CTX_npn_advertised_cb_func cb
,
2479 ctx
->ext
.npn_advertised_cb
= cb
;
2480 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2484 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2485 * client needs to select a protocol from the server's provided list. |out|
2486 * must be set to point to the selected protocol (which may be within |in|).
2487 * The length of the protocol name must be written into |outlen|. The
2488 * server's advertised protocols are provided in |in| and |inlen|. The
2489 * callback can assume that |in| is syntactically valid. The client must
2490 * select a protocol. It is fatal to the connection if this callback returns
2491 * a value other than SSL_TLSEXT_ERR_OK.
2493 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2494 SSL_CTX_npn_select_cb_func cb
,
2497 ctx
->ext
.npn_select_cb
= cb
;
2498 ctx
->ext
.npn_select_cb_arg
= arg
;
2503 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2504 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2505 * length-prefixed strings). Returns 0 on success.
2507 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2508 unsigned int protos_len
)
2510 OPENSSL_free(ctx
->ext
.alpn
);
2511 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2512 if (ctx
->ext
.alpn
== NULL
) {
2513 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2516 ctx
->ext
.alpn_len
= protos_len
;
2522 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2523 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2524 * length-prefixed strings). Returns 0 on success.
2526 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2527 unsigned int protos_len
)
2529 OPENSSL_free(ssl
->ext
.alpn
);
2530 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2531 if (ssl
->ext
.alpn
== NULL
) {
2532 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2535 ssl
->ext
.alpn_len
= protos_len
;
2541 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2542 * called during ClientHello processing in order to select an ALPN protocol
2543 * from the client's list of offered protocols.
2545 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2546 SSL_CTX_alpn_select_cb_func cb
,
2549 ctx
->ext
.alpn_select_cb
= cb
;
2550 ctx
->ext
.alpn_select_cb_arg
= arg
;
2554 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2555 * On return it sets |*data| to point to |*len| bytes of protocol name
2556 * (not including the leading length-prefix byte). If the server didn't
2557 * respond with a negotiated protocol then |*len| will be zero.
2559 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2564 *data
= ssl
->s3
->alpn_selected
;
2568 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2571 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2572 const char *label
, size_t llen
,
2573 const unsigned char *p
, size_t plen
,
2576 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2579 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2584 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2586 const unsigned char *session_id
= a
->session_id
;
2588 unsigned char tmp_storage
[4];
2590 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2591 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2592 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2593 session_id
= tmp_storage
;
2597 ((unsigned long)session_id
[0]) |
2598 ((unsigned long)session_id
[1] << 8L) |
2599 ((unsigned long)session_id
[2] << 16L) |
2600 ((unsigned long)session_id
[3] << 24L);
2605 * NB: If this function (or indeed the hash function which uses a sort of
2606 * coarser function than this one) is changed, ensure
2607 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2608 * being able to construct an SSL_SESSION that will collide with any existing
2609 * session with a matching session ID.
2611 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2613 if (a
->ssl_version
!= b
->ssl_version
)
2615 if (a
->session_id_length
!= b
->session_id_length
)
2617 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2621 * These wrapper functions should remain rather than redeclaring
2622 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2623 * variable. The reason is that the functions aren't static, they're exposed
2627 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2629 SSL_CTX
*ret
= NULL
;
2632 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2636 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2639 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2640 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2643 ret
= OPENSSL_zalloc(sizeof(*ret
));
2648 ret
->min_proto_version
= 0;
2649 ret
->max_proto_version
= 0;
2650 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2651 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2652 /* We take the system default. */
2653 ret
->session_timeout
= meth
->get_timeout();
2654 ret
->references
= 1;
2655 ret
->lock
= CRYPTO_THREAD_lock_new();
2656 if (ret
->lock
== NULL
) {
2657 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2661 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2662 ret
->verify_mode
= SSL_VERIFY_NONE
;
2663 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2666 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2667 if (ret
->sessions
== NULL
)
2669 ret
->cert_store
= X509_STORE_new();
2670 if (ret
->cert_store
== NULL
)
2672 #ifndef OPENSSL_NO_CT
2673 ret
->ctlog_store
= CTLOG_STORE_new();
2674 if (ret
->ctlog_store
== NULL
)
2677 if (!ssl_create_cipher_list(ret
->method
,
2678 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2679 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2680 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2681 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2685 ret
->param
= X509_VERIFY_PARAM_new();
2686 if (ret
->param
== NULL
)
2689 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2690 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2693 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2694 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2698 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2701 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2704 /* No compression for DTLS */
2705 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2706 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2708 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2709 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2711 /* Setup RFC5077 ticket keys */
2712 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2713 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2714 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2715 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2716 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2717 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2718 ret
->options
|= SSL_OP_NO_TICKET
;
2720 #ifndef OPENSSL_NO_SRP
2721 if (!SSL_CTX_SRP_CTX_init(ret
))
2724 #ifndef OPENSSL_NO_ENGINE
2725 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2726 # define eng_strx(x) #x
2727 # define eng_str(x) eng_strx(x)
2728 /* Use specific client engine automatically... ignore errors */
2731 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2734 ENGINE_load_builtin_engines();
2735 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2737 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2743 * Default is to connect to non-RI servers. When RI is more widely
2744 * deployed might change this.
2746 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2748 * Disable compression by default to prevent CRIME. Applications can
2749 * re-enable compression by configuring
2750 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2751 * or by using the SSL_CONF library.
2753 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2755 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2758 * Default max early data is a fully loaded single record. Could be split
2759 * across multiple records in practice
2761 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2765 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2771 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2775 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2778 REF_PRINT_COUNT("SSL_CTX", ctx
);
2779 REF_ASSERT_ISNT(i
< 2);
2780 return ((i
> 1) ? 1 : 0);
2783 void SSL_CTX_free(SSL_CTX
*a
)
2790 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2791 REF_PRINT_COUNT("SSL_CTX", a
);
2794 REF_ASSERT_ISNT(i
< 0);
2796 X509_VERIFY_PARAM_free(a
->param
);
2797 dane_ctx_final(&a
->dane
);
2800 * Free internal session cache. However: the remove_cb() may reference
2801 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2802 * after the sessions were flushed.
2803 * As the ex_data handling routines might also touch the session cache,
2804 * the most secure solution seems to be: empty (flush) the cache, then
2805 * free ex_data, then finally free the cache.
2806 * (See ticket [openssl.org #212].)
2808 if (a
->sessions
!= NULL
)
2809 SSL_CTX_flush_sessions(a
, 0);
2811 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2812 lh_SSL_SESSION_free(a
->sessions
);
2813 X509_STORE_free(a
->cert_store
);
2814 #ifndef OPENSSL_NO_CT
2815 CTLOG_STORE_free(a
->ctlog_store
);
2817 sk_SSL_CIPHER_free(a
->cipher_list
);
2818 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2819 ssl_cert_free(a
->cert
);
2820 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2821 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2822 a
->comp_methods
= NULL
;
2823 #ifndef OPENSSL_NO_SRTP
2824 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2826 #ifndef OPENSSL_NO_SRP
2827 SSL_CTX_SRP_CTX_free(a
);
2829 #ifndef OPENSSL_NO_ENGINE
2830 ENGINE_finish(a
->client_cert_engine
);
2833 #ifndef OPENSSL_NO_EC
2834 OPENSSL_free(a
->ext
.ecpointformats
);
2835 OPENSSL_free(a
->ext
.supportedgroups
);
2837 OPENSSL_free(a
->ext
.alpn
);
2839 CRYPTO_THREAD_lock_free(a
->lock
);
2844 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2846 ctx
->default_passwd_callback
= cb
;
2849 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2851 ctx
->default_passwd_callback_userdata
= u
;
2854 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2856 return ctx
->default_passwd_callback
;
2859 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2861 return ctx
->default_passwd_callback_userdata
;
2864 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2866 s
->default_passwd_callback
= cb
;
2869 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2871 s
->default_passwd_callback_userdata
= u
;
2874 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2876 return s
->default_passwd_callback
;
2879 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2881 return s
->default_passwd_callback_userdata
;
2884 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2885 int (*cb
) (X509_STORE_CTX
*, void *),
2888 ctx
->app_verify_callback
= cb
;
2889 ctx
->app_verify_arg
= arg
;
2892 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2893 int (*cb
) (int, X509_STORE_CTX
*))
2895 ctx
->verify_mode
= mode
;
2896 ctx
->default_verify_callback
= cb
;
2899 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2901 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2904 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2906 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2909 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2911 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2914 void ssl_set_masks(SSL
*s
)
2917 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2918 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2919 unsigned long mask_k
, mask_a
;
2920 #ifndef OPENSSL_NO_EC
2921 int have_ecc_cert
, ecdsa_ok
;
2926 #ifndef OPENSSL_NO_DH
2927 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2932 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2933 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2934 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2935 #ifndef OPENSSL_NO_EC
2936 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2942 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2943 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2946 #ifndef OPENSSL_NO_GOST
2947 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2948 mask_k
|= SSL_kGOST
;
2949 mask_a
|= SSL_aGOST12
;
2951 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2952 mask_k
|= SSL_kGOST
;
2953 mask_a
|= SSL_aGOST12
;
2955 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2956 mask_k
|= SSL_kGOST
;
2957 mask_a
|= SSL_aGOST01
;
2967 if (rsa_enc
|| rsa_sign
) {
2975 mask_a
|= SSL_aNULL
;
2978 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2979 * depending on the key usage extension.
2981 #ifndef OPENSSL_NO_EC
2982 if (have_ecc_cert
) {
2984 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2985 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2986 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2989 mask_a
|= SSL_aECDSA
;
2993 #ifndef OPENSSL_NO_EC
2994 mask_k
|= SSL_kECDHE
;
2997 #ifndef OPENSSL_NO_PSK
3000 if (mask_k
& SSL_kRSA
)
3001 mask_k
|= SSL_kRSAPSK
;
3002 if (mask_k
& SSL_kDHE
)
3003 mask_k
|= SSL_kDHEPSK
;
3004 if (mask_k
& SSL_kECDHE
)
3005 mask_k
|= SSL_kECDHEPSK
;
3008 s
->s3
->tmp
.mask_k
= mask_k
;
3009 s
->s3
->tmp
.mask_a
= mask_a
;
3012 #ifndef OPENSSL_NO_EC
3014 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3016 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3017 /* key usage, if present, must allow signing */
3018 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3019 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3020 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3024 return 1; /* all checks are ok */
3029 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3030 size_t *serverinfo_length
)
3032 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3033 *serverinfo_length
= 0;
3035 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3038 *serverinfo
= cpk
->serverinfo
;
3039 *serverinfo_length
= cpk
->serverinfo_length
;
3043 void ssl_update_cache(SSL
*s
, int mode
)
3048 * If the session_id_length is 0, we are not supposed to cache it, and it
3049 * would be rather hard to do anyway :-)
3051 if (s
->session
->session_id_length
== 0)
3054 i
= s
->session_ctx
->session_cache_mode
;
3055 if ((i
& mode
) && (!s
->hit
)
3056 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3057 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3058 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3059 SSL_SESSION_up_ref(s
->session
);
3060 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3061 SSL_SESSION_free(s
->session
);
3064 /* auto flush every 255 connections */
3065 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3066 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3067 ? s
->session_ctx
->stats
.sess_connect_good
3068 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3069 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3074 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3079 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3084 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3088 if (s
->method
!= meth
) {
3089 const SSL_METHOD
*sm
= s
->method
;
3090 int (*hf
) (SSL
*) = s
->handshake_func
;
3092 if (sm
->version
== meth
->version
)
3097 ret
= s
->method
->ssl_new(s
);
3100 if (hf
== sm
->ssl_connect
)
3101 s
->handshake_func
= meth
->ssl_connect
;
3102 else if (hf
== sm
->ssl_accept
)
3103 s
->handshake_func
= meth
->ssl_accept
;
3108 int SSL_get_error(const SSL
*s
, int i
)
3115 return (SSL_ERROR_NONE
);
3118 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3119 * where we do encode the error
3121 if ((l
= ERR_peek_error()) != 0) {
3122 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3123 return (SSL_ERROR_SYSCALL
);
3125 return (SSL_ERROR_SSL
);
3128 if (SSL_want_read(s
)) {
3129 bio
= SSL_get_rbio(s
);
3130 if (BIO_should_read(bio
))
3131 return (SSL_ERROR_WANT_READ
);
3132 else if (BIO_should_write(bio
))
3134 * This one doesn't make too much sense ... We never try to write
3135 * to the rbio, and an application program where rbio and wbio
3136 * are separate couldn't even know what it should wait for.
3137 * However if we ever set s->rwstate incorrectly (so that we have
3138 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3139 * wbio *are* the same, this test works around that bug; so it
3140 * might be safer to keep it.
3142 return (SSL_ERROR_WANT_WRITE
);
3143 else if (BIO_should_io_special(bio
)) {
3144 reason
= BIO_get_retry_reason(bio
);
3145 if (reason
== BIO_RR_CONNECT
)
3146 return (SSL_ERROR_WANT_CONNECT
);
3147 else if (reason
== BIO_RR_ACCEPT
)
3148 return (SSL_ERROR_WANT_ACCEPT
);
3150 return (SSL_ERROR_SYSCALL
); /* unknown */
3154 if (SSL_want_write(s
)) {
3155 /* Access wbio directly - in order to use the buffered bio if present */
3157 if (BIO_should_write(bio
))
3158 return (SSL_ERROR_WANT_WRITE
);
3159 else if (BIO_should_read(bio
))
3161 * See above (SSL_want_read(s) with BIO_should_write(bio))
3163 return (SSL_ERROR_WANT_READ
);
3164 else if (BIO_should_io_special(bio
)) {
3165 reason
= BIO_get_retry_reason(bio
);
3166 if (reason
== BIO_RR_CONNECT
)
3167 return (SSL_ERROR_WANT_CONNECT
);
3168 else if (reason
== BIO_RR_ACCEPT
)
3169 return (SSL_ERROR_WANT_ACCEPT
);
3171 return (SSL_ERROR_SYSCALL
);
3174 if (SSL_want_x509_lookup(s
))
3175 return (SSL_ERROR_WANT_X509_LOOKUP
);
3176 if (SSL_want_async(s
))
3177 return SSL_ERROR_WANT_ASYNC
;
3178 if (SSL_want_async_job(s
))
3179 return SSL_ERROR_WANT_ASYNC_JOB
;
3180 if (SSL_want_early(s
))
3181 return SSL_ERROR_WANT_EARLY
;
3183 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3184 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3185 return (SSL_ERROR_ZERO_RETURN
);
3187 return (SSL_ERROR_SYSCALL
);
3190 static int ssl_do_handshake_intern(void *vargs
)
3192 struct ssl_async_args
*args
;
3195 args
= (struct ssl_async_args
*)vargs
;
3198 return s
->handshake_func(s
);
3201 int SSL_do_handshake(SSL
*s
)
3205 if (s
->handshake_func
== NULL
) {
3206 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3210 ossl_statem_check_finish_init(s
, -1);
3212 s
->method
->ssl_renegotiate_check(s
, 0);
3214 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3215 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3216 struct ssl_async_args args
;
3220 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3222 ret
= s
->handshake_func(s
);
3228 void SSL_set_accept_state(SSL
*s
)
3232 ossl_statem_clear(s
);
3233 s
->handshake_func
= s
->method
->ssl_accept
;
3237 void SSL_set_connect_state(SSL
*s
)
3241 ossl_statem_clear(s
);
3242 s
->handshake_func
= s
->method
->ssl_connect
;
3246 int ssl_undefined_function(SSL
*s
)
3248 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3252 int ssl_undefined_void_function(void)
3254 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3255 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3259 int ssl_undefined_const_function(const SSL
*s
)
3264 const SSL_METHOD
*ssl_bad_method(int ver
)
3266 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3270 const char *ssl_protocol_to_string(int version
)
3274 case TLS1_3_VERSION
:
3277 case TLS1_2_VERSION
:
3280 case TLS1_1_VERSION
:
3295 case DTLS1_2_VERSION
:
3303 const char *SSL_get_version(const SSL
*s
)
3305 return ssl_protocol_to_string(s
->version
);
3308 SSL
*SSL_dup(SSL
*s
)
3310 STACK_OF(X509_NAME
) *sk
;
3315 /* If we're not quiescent, just up_ref! */
3316 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3317 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3322 * Otherwise, copy configuration state, and session if set.
3324 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3327 if (s
->session
!= NULL
) {
3329 * Arranges to share the same session via up_ref. This "copies"
3330 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3332 if (!SSL_copy_session_id(ret
, s
))
3336 * No session has been established yet, so we have to expect that
3337 * s->cert or ret->cert will be changed later -- they should not both
3338 * point to the same object, and thus we can't use
3339 * SSL_copy_session_id.
3341 if (!SSL_set_ssl_method(ret
, s
->method
))
3344 if (s
->cert
!= NULL
) {
3345 ssl_cert_free(ret
->cert
);
3346 ret
->cert
= ssl_cert_dup(s
->cert
);
3347 if (ret
->cert
== NULL
)
3351 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3352 (int)s
->sid_ctx_length
))
3356 if (!ssl_dane_dup(ret
, s
))
3358 ret
->version
= s
->version
;
3359 ret
->options
= s
->options
;
3360 ret
->mode
= s
->mode
;
3361 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3362 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3363 ret
->msg_callback
= s
->msg_callback
;
3364 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3365 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3366 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3367 ret
->generate_session_id
= s
->generate_session_id
;
3369 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3371 /* copy app data, a little dangerous perhaps */
3372 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3375 /* setup rbio, and wbio */
3376 if (s
->rbio
!= NULL
) {
3377 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3380 if (s
->wbio
!= NULL
) {
3381 if (s
->wbio
!= s
->rbio
) {
3382 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3385 BIO_up_ref(ret
->rbio
);
3386 ret
->wbio
= ret
->rbio
;
3390 ret
->server
= s
->server
;
3391 if (s
->handshake_func
) {
3393 SSL_set_accept_state(ret
);
3395 SSL_set_connect_state(ret
);
3397 ret
->shutdown
= s
->shutdown
;
3400 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3401 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3403 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3405 /* dup the cipher_list and cipher_list_by_id stacks */
3406 if (s
->cipher_list
!= NULL
) {
3407 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3410 if (s
->cipher_list_by_id
!= NULL
)
3411 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3415 /* Dup the client_CA list */
3416 if (s
->ca_names
!= NULL
) {
3417 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3420 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3421 xn
= sk_X509_NAME_value(sk
, i
);
3422 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3435 void ssl_clear_cipher_ctx(SSL
*s
)
3437 if (s
->enc_read_ctx
!= NULL
) {
3438 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3439 s
->enc_read_ctx
= NULL
;
3441 if (s
->enc_write_ctx
!= NULL
) {
3442 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3443 s
->enc_write_ctx
= NULL
;
3445 #ifndef OPENSSL_NO_COMP
3446 COMP_CTX_free(s
->expand
);
3448 COMP_CTX_free(s
->compress
);
3453 X509
*SSL_get_certificate(const SSL
*s
)
3455 if (s
->cert
!= NULL
)
3456 return (s
->cert
->key
->x509
);
3461 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3463 if (s
->cert
!= NULL
)
3464 return (s
->cert
->key
->privatekey
);
3469 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3471 if (ctx
->cert
!= NULL
)
3472 return ctx
->cert
->key
->x509
;
3477 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3479 if (ctx
->cert
!= NULL
)
3480 return ctx
->cert
->key
->privatekey
;
3485 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3487 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3488 return (s
->session
->cipher
);
3492 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3494 #ifndef OPENSSL_NO_COMP
3495 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3501 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3503 #ifndef OPENSSL_NO_COMP
3504 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3510 int ssl_init_wbio_buffer(SSL
*s
)
3514 if (s
->bbio
!= NULL
) {
3515 /* Already buffered. */
3519 bbio
= BIO_new(BIO_f_buffer());
3520 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3522 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3526 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3531 void ssl_free_wbio_buffer(SSL
*s
)
3533 /* callers ensure s is never null */
3534 if (s
->bbio
== NULL
)
3537 s
->wbio
= BIO_pop(s
->wbio
);
3538 assert(s
->wbio
!= NULL
);
3543 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3545 ctx
->quiet_shutdown
= mode
;
3548 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3550 return (ctx
->quiet_shutdown
);
3553 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3555 s
->quiet_shutdown
= mode
;
3558 int SSL_get_quiet_shutdown(const SSL
*s
)
3560 return (s
->quiet_shutdown
);
3563 void SSL_set_shutdown(SSL
*s
, int mode
)
3568 int SSL_get_shutdown(const SSL
*s
)
3573 int SSL_version(const SSL
*s
)
3578 int SSL_client_version(const SSL
*s
)
3580 return s
->client_version
;
3583 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3588 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3591 if (ssl
->ctx
== ctx
)
3594 ctx
= ssl
->session_ctx
;
3595 new_cert
= ssl_cert_dup(ctx
->cert
);
3596 if (new_cert
== NULL
) {
3600 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3601 ssl_cert_free(new_cert
);
3605 ssl_cert_free(ssl
->cert
);
3606 ssl
->cert
= new_cert
;
3609 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3610 * so setter APIs must prevent invalid lengths from entering the system.
3612 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3615 * If the session ID context matches that of the parent SSL_CTX,
3616 * inherit it from the new SSL_CTX as well. If however the context does
3617 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3618 * leave it unchanged.
3620 if ((ssl
->ctx
!= NULL
) &&
3621 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3622 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3623 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3624 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3627 SSL_CTX_up_ref(ctx
);
3628 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3634 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3636 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3639 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3641 X509_LOOKUP
*lookup
;
3643 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3646 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3648 /* Clear any errors if the default directory does not exist */
3654 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3656 X509_LOOKUP
*lookup
;
3658 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3662 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3664 /* Clear any errors if the default file does not exist */
3670 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3673 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3676 void SSL_set_info_callback(SSL
*ssl
,
3677 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3679 ssl
->info_callback
= cb
;
3683 * One compiler (Diab DCC) doesn't like argument names in returned function
3686 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3689 return ssl
->info_callback
;
3692 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3694 ssl
->verify_result
= arg
;
3697 long SSL_get_verify_result(const SSL
*ssl
)
3699 return (ssl
->verify_result
);
3702 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3705 return sizeof(ssl
->s3
->client_random
);
3706 if (outlen
> sizeof(ssl
->s3
->client_random
))
3707 outlen
= sizeof(ssl
->s3
->client_random
);
3708 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3712 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3715 return sizeof(ssl
->s3
->server_random
);
3716 if (outlen
> sizeof(ssl
->s3
->server_random
))
3717 outlen
= sizeof(ssl
->s3
->server_random
);
3718 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3722 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3723 unsigned char *out
, size_t outlen
)
3726 return session
->master_key_length
;
3727 if (outlen
> session
->master_key_length
)
3728 outlen
= session
->master_key_length
;
3729 memcpy(out
, session
->master_key
, outlen
);
3733 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3735 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3738 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3740 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3743 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3745 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3748 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3750 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3753 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3755 return (ctx
->cert_store
);
3758 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3760 X509_STORE_free(ctx
->cert_store
);
3761 ctx
->cert_store
= store
;
3764 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3767 X509_STORE_up_ref(store
);
3768 SSL_CTX_set_cert_store(ctx
, store
);
3771 int SSL_want(const SSL
*s
)
3773 return (s
->rwstate
);
3777 * \brief Set the callback for generating temporary DH keys.
3778 * \param ctx the SSL context.
3779 * \param dh the callback
3782 #ifndef OPENSSL_NO_DH
3783 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3784 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3787 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3790 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3793 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3797 #ifndef OPENSSL_NO_PSK
3798 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3800 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3801 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3804 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3805 if (identity_hint
!= NULL
) {
3806 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3807 if (ctx
->cert
->psk_identity_hint
== NULL
)
3810 ctx
->cert
->psk_identity_hint
= NULL
;
3814 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3819 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3820 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3823 OPENSSL_free(s
->cert
->psk_identity_hint
);
3824 if (identity_hint
!= NULL
) {
3825 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3826 if (s
->cert
->psk_identity_hint
== NULL
)
3829 s
->cert
->psk_identity_hint
= NULL
;
3833 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3835 if (s
== NULL
|| s
->session
== NULL
)
3837 return (s
->session
->psk_identity_hint
);
3840 const char *SSL_get_psk_identity(const SSL
*s
)
3842 if (s
== NULL
|| s
->session
== NULL
)
3844 return (s
->session
->psk_identity
);
3847 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3849 s
->psk_client_callback
= cb
;
3852 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3854 ctx
->psk_client_callback
= cb
;
3857 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3859 s
->psk_server_callback
= cb
;
3862 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3864 ctx
->psk_server_callback
= cb
;
3868 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3869 void (*cb
) (int write_p
, int version
,
3870 int content_type
, const void *buf
,
3871 size_t len
, SSL
*ssl
, void *arg
))
3873 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3876 void SSL_set_msg_callback(SSL
*ssl
,
3877 void (*cb
) (int write_p
, int version
,
3878 int content_type
, const void *buf
,
3879 size_t len
, SSL
*ssl
, void *arg
))
3881 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3884 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3885 int (*cb
) (SSL
*ssl
,
3889 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3890 (void (*)(void))cb
);
3893 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3894 int (*cb
) (SSL
*ssl
,
3895 int is_forward_secure
))
3897 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3898 (void (*)(void))cb
);
3901 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3902 size_t (*cb
) (SSL
*ssl
, int type
,
3903 size_t len
, void *arg
))
3905 ctx
->record_padding_cb
= cb
;
3908 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3910 ctx
->record_padding_arg
= arg
;
3913 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3915 return ctx
->record_padding_arg
;
3918 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3920 /* block size of 0 or 1 is basically no padding */
3921 if (block_size
== 1)
3922 ctx
->block_padding
= 0;
3923 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3924 ctx
->block_padding
= block_size
;
3930 void SSL_set_record_padding_callback(SSL
*ssl
,
3931 size_t (*cb
) (SSL
*ssl
, int type
,
3932 size_t len
, void *arg
))
3934 ssl
->record_padding_cb
= cb
;
3937 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3939 ssl
->record_padding_arg
= arg
;
3942 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3944 return ssl
->record_padding_arg
;
3947 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3949 /* block size of 0 or 1 is basically no padding */
3950 if (block_size
== 1)
3951 ssl
->block_padding
= 0;
3952 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3953 ssl
->block_padding
= block_size
;
3960 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3961 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3962 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3963 * Returns the newly allocated ctx;
3966 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3968 ssl_clear_hash_ctx(hash
);
3969 *hash
= EVP_MD_CTX_new();
3970 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3971 EVP_MD_CTX_free(*hash
);
3978 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3981 EVP_MD_CTX_free(*hash
);
3985 /* Retrieve handshake hashes */
3986 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3989 EVP_MD_CTX
*ctx
= NULL
;
3990 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3991 int hashleni
= EVP_MD_CTX_size(hdgst
);
3994 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3997 ctx
= EVP_MD_CTX_new();
4001 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4002 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4005 *hashlen
= hashleni
;
4009 EVP_MD_CTX_free(ctx
);
4013 int SSL_session_reused(SSL
*s
)
4018 int SSL_is_server(SSL
*s
)
4023 #if OPENSSL_API_COMPAT < 0x10100000L
4024 void SSL_set_debug(SSL
*s
, int debug
)
4026 /* Old function was do-nothing anyway... */
4032 void SSL_set_security_level(SSL
*s
, int level
)
4034 s
->cert
->sec_level
= level
;
4037 int SSL_get_security_level(const SSL
*s
)
4039 return s
->cert
->sec_level
;
4042 void SSL_set_security_callback(SSL
*s
,
4043 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4044 int op
, int bits
, int nid
,
4045 void *other
, void *ex
))
4047 s
->cert
->sec_cb
= cb
;
4050 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4051 const SSL_CTX
*ctx
, int op
,
4052 int bits
, int nid
, void *other
,
4054 return s
->cert
->sec_cb
;
4057 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4059 s
->cert
->sec_ex
= ex
;
4062 void *SSL_get0_security_ex_data(const SSL
*s
)
4064 return s
->cert
->sec_ex
;
4067 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4069 ctx
->cert
->sec_level
= level
;
4072 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4074 return ctx
->cert
->sec_level
;
4077 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4078 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4079 int op
, int bits
, int nid
,
4080 void *other
, void *ex
))
4082 ctx
->cert
->sec_cb
= cb
;
4085 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4091 return ctx
->cert
->sec_cb
;
4094 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4096 ctx
->cert
->sec_ex
= ex
;
4099 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4101 return ctx
->cert
->sec_ex
;
4105 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4106 * can return unsigned long, instead of the generic long return value from the
4107 * control interface.
4109 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4111 return ctx
->options
;
4114 unsigned long SSL_get_options(const SSL
*s
)
4119 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4121 return ctx
->options
|= op
;
4124 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4126 return s
->options
|= op
;
4129 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4131 return ctx
->options
&= ~op
;
4134 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4136 return s
->options
&= ~op
;
4139 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4141 return s
->verified_chain
;
4144 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4146 #ifndef OPENSSL_NO_CT
4149 * Moves SCTs from the |src| stack to the |dst| stack.
4150 * The source of each SCT will be set to |origin|.
4151 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4153 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4155 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4156 sct_source_t origin
)
4162 *dst
= sk_SCT_new_null();
4164 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4169 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4170 if (SCT_set_source(sct
, origin
) != 1)
4173 if (sk_SCT_push(*dst
, sct
) <= 0)
4181 sk_SCT_push(src
, sct
); /* Put the SCT back */
4186 * Look for data collected during ServerHello and parse if found.
4187 * Returns the number of SCTs extracted.
4189 static int ct_extract_tls_extension_scts(SSL
*s
)
4191 int scts_extracted
= 0;
4193 if (s
->ext
.scts
!= NULL
) {
4194 const unsigned char *p
= s
->ext
.scts
;
4195 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4197 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4199 SCT_LIST_free(scts
);
4202 return scts_extracted
;
4206 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4207 * contains an SCT X509 extension. They will be stored in |s->scts|.
4209 * - The number of SCTs extracted, assuming an OCSP response exists.
4210 * - 0 if no OCSP response exists or it contains no SCTs.
4211 * - A negative integer if an error occurs.
4213 static int ct_extract_ocsp_response_scts(SSL
*s
)
4215 # ifndef OPENSSL_NO_OCSP
4216 int scts_extracted
= 0;
4217 const unsigned char *p
;
4218 OCSP_BASICRESP
*br
= NULL
;
4219 OCSP_RESPONSE
*rsp
= NULL
;
4220 STACK_OF(SCT
) *scts
= NULL
;
4223 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4226 p
= s
->ext
.ocsp
.resp
;
4227 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4231 br
= OCSP_response_get1_basic(rsp
);
4235 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4236 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4242 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4244 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4245 if (scts_extracted
< 0)
4249 SCT_LIST_free(scts
);
4250 OCSP_BASICRESP_free(br
);
4251 OCSP_RESPONSE_free(rsp
);
4252 return scts_extracted
;
4254 /* Behave as if no OCSP response exists */
4260 * Attempts to extract SCTs from the peer certificate.
4261 * Return the number of SCTs extracted, or a negative integer if an error
4264 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4266 int scts_extracted
= 0;
4267 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4270 STACK_OF(SCT
) *scts
=
4271 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4274 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4276 SCT_LIST_free(scts
);
4279 return scts_extracted
;
4283 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4284 * response (if it exists) and X509v3 extensions in the certificate.
4285 * Returns NULL if an error occurs.
4287 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4289 if (!s
->scts_parsed
) {
4290 if (ct_extract_tls_extension_scts(s
) < 0 ||
4291 ct_extract_ocsp_response_scts(s
) < 0 ||
4292 ct_extract_x509v3_extension_scts(s
) < 0)
4302 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4303 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4308 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4309 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4311 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4314 for (i
= 0; i
< count
; ++i
) {
4315 SCT
*sct
= sk_SCT_value(scts
, i
);
4316 int status
= SCT_get_validation_status(sct
);
4318 if (status
== SCT_VALIDATION_STATUS_VALID
)
4321 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4325 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4329 * Since code exists that uses the custom extension handler for CT, look
4330 * for this and throw an error if they have already registered to use CT.
4332 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4333 TLSEXT_TYPE_signed_certificate_timestamp
))
4335 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4336 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4340 if (callback
!= NULL
) {
4342 * If we are validating CT, then we MUST accept SCTs served via OCSP
4344 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4348 s
->ct_validation_callback
= callback
;
4349 s
->ct_validation_callback_arg
= arg
;
4354 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4355 ssl_ct_validation_cb callback
, void *arg
)
4358 * Since code exists that uses the custom extension handler for CT, look for
4359 * this and throw an error if they have already registered to use CT.
4361 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4362 TLSEXT_TYPE_signed_certificate_timestamp
))
4364 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4365 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4369 ctx
->ct_validation_callback
= callback
;
4370 ctx
->ct_validation_callback_arg
= arg
;
4374 int SSL_ct_is_enabled(const SSL
*s
)
4376 return s
->ct_validation_callback
!= NULL
;
4379 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4381 return ctx
->ct_validation_callback
!= NULL
;
4384 int ssl_validate_ct(SSL
*s
)
4387 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4389 SSL_DANE
*dane
= &s
->dane
;
4390 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4391 const STACK_OF(SCT
) *scts
;
4394 * If no callback is set, the peer is anonymous, or its chain is invalid,
4395 * skip SCT validation - just return success. Applications that continue
4396 * handshakes without certificates, with unverified chains, or pinned leaf
4397 * certificates are outside the scope of the WebPKI and CT.
4399 * The above exclusions notwithstanding the vast majority of peers will
4400 * have rather ordinary certificate chains validated by typical
4401 * applications that perform certificate verification and therefore will
4402 * process SCTs when enabled.
4404 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4405 s
->verify_result
!= X509_V_OK
||
4406 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4410 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4411 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4413 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4414 switch (dane
->mtlsa
->usage
) {
4415 case DANETLS_USAGE_DANE_TA
:
4416 case DANETLS_USAGE_DANE_EE
:
4421 ctx
= CT_POLICY_EVAL_CTX_new();
4423 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4427 issuer
= sk_X509_value(s
->verified_chain
, 1);
4428 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4429 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4430 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4431 CT_POLICY_EVAL_CTX_set_time(
4432 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4434 scts
= SSL_get0_peer_scts(s
);
4437 * This function returns success (> 0) only when all the SCTs are valid, 0
4438 * when some are invalid, and < 0 on various internal errors (out of
4439 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4440 * reason to abort the handshake, that decision is up to the callback.
4441 * Therefore, we error out only in the unexpected case that the return
4442 * value is negative.
4444 * XXX: One might well argue that the return value of this function is an
4445 * unfortunate design choice. Its job is only to determine the validation
4446 * status of each of the provided SCTs. So long as it correctly separates
4447 * the wheat from the chaff it should return success. Failure in this case
4448 * ought to correspond to an inability to carry out its duties.
4450 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4451 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4455 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4457 ret
= 0; /* This function returns 0 on failure */
4460 CT_POLICY_EVAL_CTX_free(ctx
);
4462 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4463 * failure return code here. Also the application may wish the complete
4464 * the handshake, and then disconnect cleanly at a higher layer, after
4465 * checking the verification status of the completed connection.
4467 * We therefore force a certificate verification failure which will be
4468 * visible via SSL_get_verify_result() and cached as part of any resumed
4471 * Note: the permissive callback is for information gathering only, always
4472 * returns success, and does not affect verification status. Only the
4473 * strict callback or a custom application-specified callback can trigger
4474 * connection failure or record a verification error.
4477 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4481 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4483 switch (validation_mode
) {
4485 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4487 case SSL_CT_VALIDATION_PERMISSIVE
:
4488 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4489 case SSL_CT_VALIDATION_STRICT
:
4490 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4494 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4496 switch (validation_mode
) {
4498 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4500 case SSL_CT_VALIDATION_PERMISSIVE
:
4501 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4502 case SSL_CT_VALIDATION_STRICT
:
4503 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4507 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4509 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4512 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4514 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4517 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4519 CTLOG_STORE_free(ctx
->ctlog_store
);
4520 ctx
->ctlog_store
= logs
;
4523 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4525 return ctx
->ctlog_store
;
4528 #endif /* OPENSSL_NO_CT */
4530 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4533 c
->early_cb_arg
= arg
;
4536 int SSL_early_isv2(SSL
*s
)
4538 if (s
->clienthello
== NULL
)
4540 return s
->clienthello
->isv2
;
4543 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4545 if (s
->clienthello
== NULL
)
4547 return s
->clienthello
->legacy_version
;
4550 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4552 if (s
->clienthello
== NULL
)
4555 *out
= s
->clienthello
->random
;
4556 return SSL3_RANDOM_SIZE
;
4559 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4561 if (s
->clienthello
== NULL
)
4564 *out
= s
->clienthello
->session_id
;
4565 return s
->clienthello
->session_id_len
;
4568 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4570 if (s
->clienthello
== NULL
)
4573 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4574 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4577 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4579 if (s
->clienthello
== NULL
)
4582 *out
= s
->clienthello
->compressions
;
4583 return s
->clienthello
->compressions_len
;
4586 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4592 if (s
->clienthello
== NULL
)
4594 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4595 r
= s
->clienthello
->pre_proc_exts
+ i
;
4596 if (r
->present
&& r
->type
== type
) {
4598 *out
= PACKET_data(&r
->data
);
4600 *outlen
= PACKET_remaining(&r
->data
);
4607 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4609 ctx
->keylog_callback
= cb
;
4612 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4614 return ctx
->keylog_callback
;
4617 static int nss_keylog_int(const char *prefix
,
4619 const uint8_t *parameter_1
,
4620 size_t parameter_1_len
,
4621 const uint8_t *parameter_2
,
4622 size_t parameter_2_len
)
4625 char *cursor
= NULL
;
4630 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4633 * Our output buffer will contain the following strings, rendered with
4634 * space characters in between, terminated by a NULL character: first the
4635 * prefix, then the first parameter, then the second parameter. The
4636 * meaning of each parameter depends on the specific key material being
4637 * logged. Note that the first and second parameters are encoded in
4638 * hexadecimal, so we need a buffer that is twice their lengths.
4640 prefix_len
= strlen(prefix
);
4641 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4642 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4643 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4647 strcpy(cursor
, prefix
);
4648 cursor
+= prefix_len
;
4651 for (i
= 0; i
< parameter_1_len
; i
++) {
4652 sprintf(cursor
, "%02x", parameter_1
[i
]);
4657 for (i
= 0; i
< parameter_2_len
; i
++) {
4658 sprintf(cursor
, "%02x", parameter_2
[i
]);
4663 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4669 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4670 const uint8_t *encrypted_premaster
,
4671 size_t encrypted_premaster_len
,
4672 const uint8_t *premaster
,
4673 size_t premaster_len
)
4675 if (encrypted_premaster_len
< 8) {
4676 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4680 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4681 return nss_keylog_int("RSA",
4683 encrypted_premaster
,
4689 int ssl_log_secret(SSL
*ssl
,
4691 const uint8_t *secret
,
4694 return nss_keylog_int(label
,
4696 ssl
->s3
->client_random
,
4702 #define SSLV2_CIPHER_LEN 3
4704 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4709 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4711 if (PACKET_remaining(cipher_suites
) == 0) {
4712 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4713 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4717 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4718 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4719 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4720 *al
= SSL_AD_DECODE_ERROR
;
4724 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4725 s
->s3
->tmp
.ciphers_raw
= NULL
;
4726 s
->s3
->tmp
.ciphers_rawlen
= 0;
4729 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4730 PACKET sslv2ciphers
= *cipher_suites
;
4731 unsigned int leadbyte
;
4735 * We store the raw ciphers list in SSLv3+ format so we need to do some
4736 * preprocessing to convert the list first. If there are any SSLv2 only
4737 * ciphersuites with a non-zero leading byte then we are going to
4738 * slightly over allocate because we won't store those. But that isn't a
4741 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4742 s
->s3
->tmp
.ciphers_raw
= raw
;
4744 *al
= SSL_AD_INTERNAL_ERROR
;
4747 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4748 PACKET_remaining(&sslv2ciphers
) > 0;
4749 raw
+= TLS_CIPHER_LEN
) {
4750 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4752 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4755 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4756 *al
= SSL_AD_INTERNAL_ERROR
;
4757 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4758 s
->s3
->tmp
.ciphers_raw
= NULL
;
4759 s
->s3
->tmp
.ciphers_rawlen
= 0;
4763 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4765 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4766 &s
->s3
->tmp
.ciphers_rawlen
)) {
4767 *al
= SSL_AD_INTERNAL_ERROR
;
4775 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4776 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4777 STACK_OF(SSL_CIPHER
) **scsvs
)
4782 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4784 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4787 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4788 STACK_OF(SSL_CIPHER
) **skp
,
4789 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4790 int sslv2format
, int *al
)
4792 const SSL_CIPHER
*c
;
4793 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4794 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4796 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4797 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4799 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4801 if (PACKET_remaining(cipher_suites
) == 0) {
4802 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4803 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4807 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4808 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4809 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4810 *al
= SSL_AD_DECODE_ERROR
;
4814 sk
= sk_SSL_CIPHER_new_null();
4815 scsvs
= sk_SSL_CIPHER_new_null();
4816 if (sk
== NULL
|| scsvs
== NULL
) {
4817 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4818 *al
= SSL_AD_INTERNAL_ERROR
;
4822 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4824 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4825 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4826 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4828 if (sslv2format
&& cipher
[0] != '\0')
4831 /* For SSLv2-compat, ignore leading 0-byte. */
4832 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4834 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4835 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4836 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4837 *al
= SSL_AD_INTERNAL_ERROR
;
4842 if (PACKET_remaining(cipher_suites
) > 0) {
4843 *al
= SSL_AD_INTERNAL_ERROR
;
4844 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_INTERNAL_ERROR
);
4851 sk_SSL_CIPHER_free(sk
);
4852 if (scsvs_out
!= NULL
)
4855 sk_SSL_CIPHER_free(scsvs
);
4858 sk_SSL_CIPHER_free(sk
);
4859 sk_SSL_CIPHER_free(scsvs
);
4863 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4865 ctx
->max_early_data
= max_early_data
;
4870 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4872 return ctx
->max_early_data
;
4875 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4877 s
->max_early_data
= max_early_data
;
4882 uint32_t SSL_get_max_early_data(const SSL
*s
)
4884 return s
->max_early_data
;